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Message-ID: <20211115101129.lyxxmb6i7paaonwi@gilmour>
Date: Mon, 15 Nov 2021 11:11:29 +0100
From: Maxime Ripard <maxime@...no.tech>
To: Guillaume Ranquet <granquet@...libre.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Chun-Kuang Hu <chunkuang.hu@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
Matthias Brugger <matthias.bgg@...il.com>,
Markus Schneider-Pargmann <msp@...libre.com>,
kernel test robot <lkp@...el.com>,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-mediatek@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 7/7] drm/mediatek: Add mt8195 DisplayPort driver
Hi,
On Wed, Nov 10, 2021 at 02:06:23PM +0100, Guillaume Ranquet wrote:
> From: Markus Schneider-Pargmann <msp@...libre.com>
>
> This patch adds a DisplayPort driver for the Mediatek mt8195 SoC and a
> according phy driver mediatek-dp-phy.
>
> It supports both functional units on the mt8195, the embedded
> DisplayPort as well as the external DisplayPort units. It offers
> hot-plug-detection, audio up to 8 channels, and DisplayPort 1.4 with up
> to 4 lanes.
There's a number of checkpatch --strict errors in there, make sure to fix them.
> The driver creates a child device for the phy. The child device will
> never exist without the parent being active. As they are sharing a
> register range, the parent passes a regmap pointer to the child so that
> both can work with the same register range. The phy driver sets device
> data that is read by the parent to get the phy device that can be used
> to control the phy properties.
If the PHY is in the same register space than the DP controller, why do
you need a separate PHY driver in the first place?
> This driver is based on an initial version by
> Jason-JH.Lin <jason-jh.lin@...iatek.com>.
>
> Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
> Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
> Reported-by: kernel test robot <lkp@...el.com>
> ---
> drivers/gpu/drm/drm_edid.c | 2 +-
> drivers/gpu/drm/mediatek/Kconfig | 7 +
> drivers/gpu/drm/mediatek/Makefile | 2 +
> drivers/gpu/drm/mediatek/mtk_dp.c | 3094 +++++++++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_dp_reg.h | 568 +++++
> drivers/gpu/drm/mediatek/mtk_dpi.c | 111 +-
> drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 26 +
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
> 9 files changed, 3799 insertions(+), 13 deletions(-)
> create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c
> create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 500279a82167a..bfd98b50ceb5b 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -5183,7 +5183,7 @@ static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
> * modes and forbids YCRCB422 support for all video modes per
> * HDMI 1.3 spec.
> */
> - info->color_formats = DRM_COLOR_FORMAT_RGB444;
> + info->color_formats |= DRM_COLOR_FORMAT_RGB444;
>
> /* YCRCB444 is optional according to spec. */
> if (hdmi[6] & DRM_EDID_HDMI_DC_Y444) {
This looks unrelated?
> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
> index 2976d21e9a34a..029b94c716131 100644
> --- a/drivers/gpu/drm/mediatek/Kconfig
> +++ b/drivers/gpu/drm/mediatek/Kconfig
> @@ -28,3 +28,10 @@ config DRM_MEDIATEK_HDMI
> select PHY_MTK_HDMI
> help
> DRM/KMS HDMI driver for Mediatek SoCs
> +
> +config MTK_DPTX_SUPPORT
> + tristate "DRM DPTX Support for Mediatek SoCs"
> + depends on DRM_MEDIATEK
> + select PHY_MTK_DP
> + help
> + DRM/KMS Display Port driver for Mediatek SoCs.
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
> index 29098d7c8307c..d86a6406055e6 100644
> --- a/drivers/gpu/drm/mediatek/Makefile
> +++ b/drivers/gpu/drm/mediatek/Makefile
> @@ -21,3 +21,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
> mtk_hdmi_ddc.o
>
> obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
> +
> +obj-$(CONFIG_MTK_DPTX_SUPPORT) += mtk_dp.o
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
> new file mode 100644
> index 0000000000000..83087219d5a5e
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -0,0 +1,3094 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + * Copyright (c) 2021 BayLibre
> + */
> +
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_bridge.h>
> +#include <drm/drm_crtc.h>
> +#include <drm/drm_dp_helper.h>
> +#include <drm/drm_edid.h>
> +#include <drm/drm_of.h>
> +#include <drm/drm_panel.h>
> +#include <drm/drm_print.h>
> +#include <drm/drm_probe_helper.h>
> +#include <linux/arm-smccc.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/errno.h>
> +#include <linux/kernel.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_platform.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +#include <sound/hdmi-codec.h>
> +#include <video/videomode.h>
> +
> +#include "mtk_dp_reg.h"
> +
> +#define MTK_DP_AUX_WAIT_REPLY_COUNT 20
> +#define MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT 3
> +
> +#define MTK_DP_MAX_LANES 4
> +#define MTK_DP_MAX_LINK_RATE MTK_DP_LINKRATE_HBR3
> +
> +#define MTK_DP_TBC_BUF_READ_START_ADDR 0x08
> +
> +#define MTK_DP_TRAIN_RETRY_LIMIT 8
> +#define MTK_DP_TRAIN_MAX_ITERATIONS 5
> +
> +#define MTK_DP_AUX_WRITE_READ_WAIT_TIME_US 20
> +
> +#define MTK_DP_DP_VERSION_11 0x11
> +
> +enum mtk_dp_state {
> + MTK_DP_STATE_INITIAL,
> + MTK_DP_STATE_IDLE,
> + MTK_DP_STATE_PREPARE,
> + MTK_DP_STATE_NORMAL,
> +};
> +
> +enum mtk_dp_train_state {
> + MTK_DP_TRAIN_STATE_STARTUP = 0,
> + MTK_DP_TRAIN_STATE_CHECKCAP,
> + MTK_DP_TRAIN_STATE_CHECKEDID,
> + MTK_DP_TRAIN_STATE_TRAINING_PRE,
> + MTK_DP_TRAIN_STATE_TRAINING,
> + MTK_DP_TRAIN_STATE_CHECKTIMING,
> + MTK_DP_TRAIN_STATE_NORMAL,
> + MTK_DP_TRAIN_STATE_POWERSAVE,
> + MTK_DP_TRAIN_STATE_DPIDLE,
> +};
> +
> +struct mtk_dp_timings {
> + struct videomode vm;
> +
> + u16 htotal;
> + u16 vtotal;
> + u8 frame_rate;
> + u32 pix_rate_khz;
> +};
> +
> +struct mtk_dp_train_info {
> + bool tps3;
> + bool tps4;
> + bool sink_ssc;
> + bool cable_plugged_in;
> + bool cable_state_change;
> + bool cr_done;
> + bool eq_done;
> +
> + // link_rate is in multiple of 0.27Gbps
> + int link_rate;
> + int lane_count;
> +
> + int irq_status;
> + int check_cap_count;
> +};
> +
> +// Same values as used by the DP Spec for MISC0 bits 1 and 2
> +enum mtk_dp_color_format {
> + MTK_DP_COLOR_FORMAT_RGB_444 = 0,
> + MTK_DP_COLOR_FORMAT_YUV_422 = 1,
> + MTK_DP_COLOR_FORMAT_YUV_444 = 2,
> + MTK_DP_COLOR_FORMAT_YUV_420 = 3,
> + MTK_DP_COLOR_FORMAT_YONLY = 4,
> + MTK_DP_COLOR_FORMAT_RAW = 5,
> + MTK_DP_COLOR_FORMAT_RESERVED = 6,
> + MTK_DP_COLOR_FORMAT_DEFAULT = MTK_DP_COLOR_FORMAT_RGB_444,
> + MTK_DP_COLOR_FORMAT_UNKNOWN = 15,
> +};
> +
> +// Multiple of 0.27Gbps
> +enum mtk_dp_linkrate {
> + MTK_DP_LINKRATE_RBR = 0x6,
> + MTK_DP_LINKRATE_HBR = 0xA,
> + MTK_DP_LINKRATE_HBR2 = 0x14,
> + MTK_DP_LINKRATE_HBR25 = 0x19,
> + MTK_DP_LINKRATE_HBR3 = 0x1E,
> +};
> +
> +// Same values as used for DP Spec MISC0 bits 5,6,7
> +enum mtk_dp_color_depth {
> + MTK_DP_COLOR_DEPTH_6BIT = 0,
> + MTK_DP_COLOR_DEPTH_8BIT = 1,
> + MTK_DP_COLOR_DEPTH_10BIT = 2,
> + MTK_DP_COLOR_DEPTH_12BIT = 3,
> + MTK_DP_COLOR_DEPTH_16BIT = 4,
> + MTK_DP_COLOR_DEPTH_UNKNOWN = 5,
> +};
> +
> +struct mtk_dp_audio_cfg {
> + int sample_rate;
> + int word_length_bits;
> + int channels;
> +};
> +
> +struct mtk_dp_info {
> + enum mtk_dp_color_depth depth;
> + enum mtk_dp_color_format format;
> + struct mtk_dp_audio_cfg audio_caps;
> + struct mtk_dp_timings timings;
> +};
> +
> +struct dp_cal_data {
> + unsigned int glb_bias_trim;
> + unsigned int clktx_impse;
> +
> + unsigned int ln0_tx_impsel_pmos;
> + unsigned int ln0_tx_impsel_nmos;
> + unsigned int ln1_tx_impsel_pmos;
> + unsigned int ln1_tx_impsel_nmos;
> + unsigned int ln2_tx_impsel_pmos;
> + unsigned int ln2_tx_impsel_nmos;
> + unsigned int ln3_tx_impsel_pmos;
> + unsigned int ln3_tx_impsel_nmos;
> +};
> +
> +struct mtk_dp {
> + struct device *dev;
> + struct platform_device *phy_dev;
> + struct phy *phy;
> + struct dp_cal_data cal_data;
> +
> + struct drm_device *drm_dev;
> + struct drm_bridge bridge;
> + struct drm_bridge *next_bridge;
> + struct drm_dp_aux aux;
> +
> + struct mutex edid_lock;
> + struct edid *edid;
> +
> + u8 rx_cap[DP_RECEIVER_CAP_SIZE];
> +
> + struct mtk_dp_info info;
> + enum mtk_dp_state state;
> +
> + struct mtk_dp_train_info train_info;
> + enum mtk_dp_train_state train_state;
> + unsigned int input_fmt;
> +
> + struct regmap *regs;
> + struct clk *dp_tx_clk;
> +
> + bool enabled;
> + bool audio_enable;
> +
> + bool has_fec;
> + struct mutex dp_lock;
> +
> + struct mutex update_plugged_status_lock;
> +
> + hdmi_codec_plugged_cb plugged_cb;
> + struct device *codec_dev;
> + u8 connector_eld[MAX_ELD_BYTES];
> +};
> +
> +enum mtk_dp_sdp_type {
> + MTK_DP_SDP_NONE = 0x00,
> + MTK_DP_SDP_ACM = 0x01,
> + MTK_DP_SDP_ISRC = 0x02,
> + MTK_DP_SDP_AVI = 0x03,
> + MTK_DP_SDP_AUI = 0x04,
> + MTK_DP_SDP_SPD = 0x05,
> + MTK_DP_SDP_MPEG = 0x06,
> + MTK_DP_SDP_NTSC = 0x07,
> + MTK_DP_SDP_VSP = 0x08,
> + MTK_DP_SDP_VSC = 0x09,
> + MTK_DP_SDP_EXT = 0x0A,
> + MTK_DP_SDP_PPS0 = 0x0B,
> + MTK_DP_SDP_PPS1 = 0x0C,
> + MTK_DP_SDP_PPS2 = 0x0D,
> + MTK_DP_SDP_PPS3 = 0x0E,
> + MTK_DP_SDP_DRM = 0x10,
> + MTK_DP_SDP_MAX_NUM
> +};
> +
> +struct mtk_dp_sdp_packet {
> + enum mtk_dp_sdp_type type;
> + struct dp_sdp sdp;
> +};
> +
> +#define MTK_DP_IEC_CHANNEL_STATUS_LEN 5
> +union mtk_dp_audio_channel_status {
> + struct {
> + u8 rev : 1;
> + u8 is_lpcm : 1;
> + u8 copy_right : 1;
> + u8 additional_format_info : 3;
> + u8 channel_status_mode : 2;
> + u8 category_code;
> + u8 src_num : 4;
> + u8 channel_num : 4;
> + u8 sampling_freq : 4;
> + u8 clk_accuracy : 2;
> + u8 rev2 : 2;
> + u8 word_len : 4;
> + u8 original_sampling_freq : 4;
> + } iec;
> +
> + u8 buf[MTK_DP_IEC_CHANNEL_STATUS_LEN];
> +};
Why don't you leverage hdmi_codec_params and snd_aes_iec958?
> +static struct regmap_config mtk_dp_regmap_config = {
> + .reg_bits = 32,
> + .val_bits = 32,
> + .reg_stride = 4,
> + .max_register = SEC_OFFSET + 0x90,
> + .name = "mtk-dp-registers",
> +};
> +
> +static bool mtk_dp_is_edp(struct mtk_dp *mtk_dp)
> +{
> + return mtk_dp->next_bridge != NULL;
> +}
> +
> +static struct mtk_dp *mtk_dp_from_bridge(struct drm_bridge *b)
> +{
> + return container_of(b, struct mtk_dp, bridge);
> +}
> +
> +static u32 mtk_dp_read(struct mtk_dp *mtk_dp, u32 offset)
> +{
> + u32 read_val;
> + int ret;
> +
> + ret = regmap_read(mtk_dp->regs, offset, &read_val);
> + if (ret) {
> + dev_err(mtk_dp->dev, "Failed to read register 0x%x: %d\n",
> + offset, ret);
> + return 0;
> + }
> +
> + return read_val;
> +}
> +
> +static void mtk_dp_write(struct mtk_dp *mtk_dp, u32 offset, u32 val)
> +{
> + int ret;
> +
> + ret = regmap_write(mtk_dp->regs, offset, val);
> + if (ret)
> + dev_err(mtk_dp->dev,
> + "Failed to write register 0x%x with value 0x%x: %d\n",
> + offset, val, ret);
> +}
> +
> +static void mtk_dp_update_bits(struct mtk_dp *mtk_dp, u32 offset, u32 val,
> + u32 mask)
> +{
> + int ret;
> +
> + ret = regmap_update_bits(mtk_dp->regs, offset, mask, val);
> + if (ret)
> + dev_err(mtk_dp->dev,
> + "Failed to update register 0x%x with value 0x%x, mask 0x%x: %d\n",
> + offset, val, mask, ret);
> +}
> +
> +static void mtk_dp_bulk_16bit_write(struct mtk_dp *mtk_dp, u32 offset, u8 *buf,
> + size_t length)
> +{
> + int i;
> + int num_regs = (length + 1) / 2;
> +
> + // 2 bytes per register
> + for (i = 0; i < num_regs; i++) {
> + u32 val = buf[i * 2] |
> + (i * 2 + 1 < length ? buf[i * 2 + 1] << 8 : 0);
> +
> + mtk_dp_write(mtk_dp, offset + i * 4, val);
> + }
> +}
> +
> +static unsigned long mtk_dp_sip_atf_call(unsigned int cmd, unsigned int para)
> +{
> + struct arm_smccc_res res;
> +
> + arm_smccc_smc(MTK_DP_SIP_CONTROL_AARCH32, cmd, para, 0, 0, 0, 0, 0,
> + &res);
> +
> + pr_debug("[DPTX]%s cmd 0x%x, p1 0x%x, ret 0x%lx-0x%lx", __func__, cmd,
> + para, res.a0, res.a1);
> + return res.a1;
> +}
> +
> +static void mtk_dp_msa_bypass_disable(struct mtk_dp *mtk_dp)
> +{
> + const u16 bits_to_set =
> + BIT(HTOTAL_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(VTOTAL_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(HSTART_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(VSTART_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(HWIDTH_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(VHEIGHT_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(HSP_SEL_DP_ENC0_P0_SHIFT) | BIT(HSW_SEL_DP_ENC0_P0_SHIFT) |
> + BIT(VSP_SEL_DP_ENC0_P0_SHIFT) | BIT(VSW_SEL_DP_ENC0_P0_SHIFT);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3030, bits_to_set,
> + bits_to_set);
> +}
> +
> +static void mtk_dp_set_msa(struct mtk_dp *mtk_dp)
> +{
> + struct mtk_dp_timings *timings = &mtk_dp->info.timings;
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3010, timings->htotal,
> + HTOTAL_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3018,
> + timings->vm.hsync_len + timings->vm.hback_porch,
> + HSTART_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
> + timings->vm.hsync_len << HSW_SW_DP_ENC0_P0_SHIFT,
> + HSW_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028, 0,
> + HSP_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3020, timings->vm.hactive,
> + HWIDTH_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3014, timings->vtotal,
> + VTOTAL_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_301C,
> + timings->vm.vsync_len + timings->vm.vback_porch,
> + VSTART_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
> + timings->vm.vsync_len << VSW_SW_DP_ENC0_P0_SHIFT,
> + VSW_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C, 0,
> + VSP_SW_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3024, timings->vm.vactive,
> + VHEIGHT_SW_DP_ENC0_P0_MASK);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3064, timings->vm.hactive,
> + HDE_NUM_LAST_DP_ENC0_P0_MASK);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3154, timings->htotal,
> + PGEN_HTOTAL_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3158,
> + timings->vm.hfront_porch,
> + PGEN_HSYNC_RISING_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_315C, timings->vm.hsync_len,
> + PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3160,
> + timings->vm.hback_porch + timings->vm.hsync_len,
> + PGEN_HFDE_START_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3164, timings->vm.hactive,
> + PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3168, timings->vtotal,
> + PGEN_VTOTAL_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_316C,
> + timings->vm.vfront_porch,
> + PGEN_VSYNC_RISING_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3170, timings->vm.vsync_len,
> + PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3174,
> + timings->vm.vback_porch + timings->vm.vsync_len,
> + PGEN_VFDE_START_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3178, timings->vm.vactive,
> + PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_set_color_format(struct mtk_dp *mtk_dp,
> + enum mtk_dp_color_format color_format)
> +{
> + u32 val;
> +
> + mtk_dp->info.format = color_format;
> +
> + // Update MISC0
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
> + color_format << DP_TEST_COLOR_FORMAT_SHIFT,
> + DP_TEST_COLOR_FORMAT_MASK);
> +
> + switch (color_format) {
> + case MTK_DP_COLOR_FORMAT_YUV_422:
> + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422;
> + break;
> + case MTK_DP_COLOR_FORMAT_YUV_420:
> + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420;
> + break;
> + case MTK_DP_COLOR_FORMAT_YONLY:
> + case MTK_DP_COLOR_FORMAT_RAW:
> + case MTK_DP_COLOR_FORMAT_RESERVED:
> + case MTK_DP_COLOR_FORMAT_UNKNOWN:
> + drm_warn(mtk_dp->drm_dev, "Unsupported color format: %d\n",
> + color_format);
> + fallthrough;
> + case MTK_DP_COLOR_FORMAT_RGB_444:
> + case MTK_DP_COLOR_FORMAT_YUV_444:
> + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB;
> + break;
> + }
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val,
> + PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_set_color_depth(struct mtk_dp *mtk_dp,
> + enum mtk_dp_color_depth color_depth)
> +{
> + u32 val;
> +
> + mtk_dp->info.depth = color_depth;
> +
> + // Update MISC0
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
> + color_depth << DP_TEST_BIT_DEPTH_SHIFT,
> + DP_TEST_BIT_DEPTH_MASK);
> +
> + switch (color_depth) {
> + case MTK_DP_COLOR_DEPTH_6BIT:
> + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT;
> + break;
> + case MTK_DP_COLOR_DEPTH_8BIT:
> + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT;
> + break;
> + case MTK_DP_COLOR_DEPTH_10BIT:
> + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT;
> + break;
> + case MTK_DP_COLOR_DEPTH_12BIT:
> + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT;
> + break;
> + case MTK_DP_COLOR_DEPTH_16BIT:
> + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT;
> + break;
> + case MTK_DP_COLOR_DEPTH_UNKNOWN:
> + drm_warn(mtk_dp->drm_dev, "Unsupported color depth %d\n",
> + color_depth);
> + return;
> + }
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val,
> + VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_mn_overwrite_disable(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0,
> + VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_set_sram_read_start(struct mtk_dp *mtk_dp, u32 val)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
> + val << SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT,
> + SRAM_START_READ_THRD_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_setup_encoder(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
> + BIT(VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT),
> + VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
> + 0x20 << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT,
> + SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
> + 0x20 << SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT,
> + SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3300,
> + 2 << VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT,
> + VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
> + 4 << FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT,
> + FIFO_READ_START_POINT_DP_ENC1_P0_MASK);
> + mtk_dp_write(mtk_dp, MTK_DP_ENC1_P0_3368,
> + 1 << VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT |
> + 1 << VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT |
> + BIT(SDP_DP13_EN_DP_ENC1_P0_SHIFT) |
> + 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT);
> +}
> +
> +static void mtk_dp_pg_disable(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3038, 0,
> + VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31B0,
> + 4 << PGEN_PATTERN_SEL_SHIFT, PGEN_PATTERN_SEL_MASK);
> +}
> +
> +static void mtk_dp_audio_setup_channels(struct mtk_dp *mtk_dp,
> + struct mtk_dp_audio_cfg *cfg)
> +{
> + u32 channel_enable_bits;
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3324,
> + AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX,
> + AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK);
> +
> + //audio channel count change reset
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, BIT(9), BIT(9));
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
> + AU_PRTY_REGEN_DP_ENC1_P0_MASK,
> + AU_PRTY_REGEN_DP_ENC1_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
> + AU_CH_STS_REGEN_DP_ENC1_P0_MASK,
> + AU_CH_STS_REGEN_DP_ENC1_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
> + AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK,
> + AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK);
> +
> + switch (cfg->channels) {
> + case 2:
> + channel_enable_bits = AUDIO_2CH_SEL_DP_ENC0_P0_MASK |
> + AUDIO_2CH_EN_DP_ENC0_P0_MASK;
> + break;
> + case 8:
> + default:
> + channel_enable_bits = AUDIO_8CH_SEL_DP_ENC0_P0_MASK |
> + AUDIO_8CH_EN_DP_ENC0_P0_MASK;
> + break;
> + }
> + mtk_dp_update_bits(
> + mtk_dp, MTK_DP_ENC0_P0_3088,
> + channel_enable_bits | AU_EN_DP_ENC0_P0_MASK,
> + AUDIO_2CH_SEL_DP_ENC0_P0_MASK | AUDIO_2CH_EN_DP_ENC0_P0_MASK |
> + AUDIO_8CH_SEL_DP_ENC0_P0_MASK |
> + AUDIO_8CH_EN_DP_ENC0_P0_MASK | AU_EN_DP_ENC0_P0_MASK);
> +
> + //audio channel count change reset
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, 0, BIT(9));
> +
> + //enable audio reset
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, BIT(0), BIT(0));
> +}
> +
> +static void mtk_dp_audio_channel_status_set(struct mtk_dp *mtk_dp,
> + struct mtk_dp_audio_cfg *cfg)
> +{
> + union mtk_dp_audio_channel_status channel_status;
> +
> + memset(&channel_status, 0, sizeof(channel_status));
> +
> + switch (cfg->sample_rate) {
> + case 32000:
> + channel_status.iec.sampling_freq = 3;
> + break;
> + case 44100:
> + channel_status.iec.sampling_freq = 0;
> + break;
> + case 48000:
> + channel_status.iec.sampling_freq = 2;
> + break;
> + case 88200:
> + channel_status.iec.sampling_freq = 8;
> + break;
> + case 96000:
> + channel_status.iec.sampling_freq = 0xA;
> + break;
> + case 192000:
> + channel_status.iec.sampling_freq = 0xE;
> + break;
> + default:
> + channel_status.iec.sampling_freq = 0x1;
> + break;
> + }
> +
> + switch (cfg->word_length_bits) {
> + case 16:
> + channel_status.iec.word_len = 0x02;
> + break;
> + case 20:
> + channel_status.iec.word_len = 0x03;
> + break;
> + case 24:
> + channel_status.iec.word_len = 0x0B;
> + break;
> + }
Yeah, this is provided by hdmi-codec through hdmi_codec_params in
prepare.
> + // IEC 60958 consumer channel status bits
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_308C,
> + channel_status.buf[1] << 8 | channel_status.buf[0],
> + CH_STATUS_0_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3090,
> + channel_status.buf[3] << 8 | channel_status.buf[2],
> + CH_STATUS_1_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3094, channel_status.buf[4],
> + CH_STATUS_2_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_audio_sdp_asp_set_channels(struct mtk_dp *mtk_dp,
> + int channels)
> +{
> + if (channels != 2 && channels != 8)
> + channels = 8;
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_312C,
> + (channels - 1) << ASP_HB3_DP_ENC0_P0_SHIFT,
> + ASP_HB2_DP_ENC0_P0_MASK | ASP_HB3_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_audio_set_divider(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC,
> + AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> + AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK);
> +}
> +
> +static bool mtk_dp_plug_state(struct mtk_dp *mtk_dp)
> +{
> + return !!(mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3414) &
> + HPD_DB_DP_TRANS_P0_MASK);
> +}
> +
> +static void mtk_dp_sdp_trigger_packet(struct mtk_dp *mtk_dp,
> + enum mtk_dp_sdp_type type)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, type,
> + SDP_PACKET_TYPE_DP_ENC1_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, SDP_PACKET_W_DP_ENC1_P0,
> + SDP_PACKET_W_DP_ENC1_P0);
> +}
> +
> +static void mtk_dp_sdp_set_data(struct mtk_dp *mtk_dp, u8 *data_bytes)
> +{
> + mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_ENC1_P0_3200, data_bytes, 0x10);
> +}
> +
> +static void mtk_dp_sdp_set_header(struct mtk_dp *mtk_dp,
> + enum mtk_dp_sdp_type type,
> + struct dp_sdp_header *header)
> +{
> + u32 db_addr;
> +
> + switch (type) {
> + case MTK_DP_SDP_DRM:
> + db_addr = MTK_DP_ENC0_P0_3138;
> + break;
> + case MTK_DP_SDP_PPS0:
> + case MTK_DP_SDP_PPS1:
> + case MTK_DP_SDP_PPS2:
> + case MTK_DP_SDP_PPS3:
> + db_addr = MTK_DP_ENC0_P0_3130;
> + break;
> + default:
> + db_addr = MTK_DP_ENC0_P0_30D8 + (type - MTK_DP_SDP_ACM) * 8;
> + }
> +
> + mtk_dp_bulk_16bit_write(mtk_dp, db_addr, (u8 *)header, 4);
> +}
> +
> +static const u32 mtk_dp_sdp_type_to_reg[MTK_DP_SDP_MAX_NUM] = {
> + /* MTK_DP_SDP_NONE => */ 0x0,
> + /* MTK_DP_SDP_ACM => */ MTK_DP_ENC0_P0_30B4,
> + /* MTK_DP_SDP_ISRC => */ MTK_DP_ENC0_P0_30B4 + 1,
> + /* MTK_DP_SDP_AVI => */ MTK_DP_ENC0_P0_30A4 + 1,
> + /* MTK_DP_SDP_AUI => */ MTK_DP_ENC0_P0_30A8,
> + /* MTK_DP_SDP_SPD => */ MTK_DP_ENC0_P0_30A8 + 1,
> + /* MTK_DP_SDP_MPEG => */ MTK_DP_ENC0_P0_30AC,
> + /* MTK_DP_SDP_NTSC => */ MTK_DP_ENC0_P0_30AC + 1,
> + /* MTK_DP_SDP_VSP => */ MTK_DP_ENC0_P0_30B0,
> + /* MTK_DP_SDP_VSC => */ MTK_DP_ENC0_P0_30B8,
> + /* MTK_DP_SDP_EXT => */ MTK_DP_ENC0_P0_30B0 + 1,
> + /* MTK_DP_SDP_PPS0 => */ MTK_DP_ENC0_P0_31E8,
> + /* MTK_DP_SDP_PPS1 => */ MTK_DP_ENC0_P0_31E8,
> + /* MTK_DP_SDP_PPS2 => */ MTK_DP_ENC0_P0_31E8,
> + /* MTK_DP_SDP_PPS3 => */ MTK_DP_ENC0_P0_31E8,
> + /* MTK_DP_SDP_DRM => */ MTK_DP_ENC0_P0_31DC,
> +};
> +
> +static void mtk_dp_disable_sdp(struct mtk_dp *mtk_dp, enum mtk_dp_sdp_type type)
> +{
> + if (type == MTK_DP_SDP_NONE)
> + return;
> +
> + // Disable periodic send
> + mtk_dp_update_bits(mtk_dp, mtk_dp_sdp_type_to_reg[type] & 0xfffc, 0,
> + 0xFF << ((mtk_dp_sdp_type_to_reg[type] & 3) * 8));
> +}
> +
> +static void mtk_dp_setup_sdp(struct mtk_dp *mtk_dp,
> + struct mtk_dp_sdp_packet *packet)
> +{
> + mtk_dp_sdp_set_data(mtk_dp, packet->sdp.db);
> + mtk_dp_sdp_set_header(mtk_dp, packet->type, &packet->sdp.sdp_header);
> +
> + mtk_dp_disable_sdp(mtk_dp, packet->type);
> +
> + switch (packet->type) {
> + case MTK_DP_SDP_NONE:
> + break;
> + case MTK_DP_SDP_ISRC:
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
> + 0x1C << ISRC1_HB3_DP_ENC0_P0_SHIFT,
> + ISRC1_HB3_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, MTK_DP_SDP_ISRC,
> + SDP_PACKET_TYPE_DP_ENC1_P0_MASK);
> +
> + if (packet->sdp.sdp_header.HB3 & BIT(2))
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC,
> + BIT(ISRC_CONT_DP_ENC0_P0_SHIFT),
> + ISRC_CONT_DP_ENC0_P0_MASK);
> + else
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC, 0,
> + ISRC_CONT_DP_ENC0_P0_MASK);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280,
> + SDP_PACKET_W_DP_ENC1_P0,
> + SDP_PACKET_W_DP_ENC1_P0);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30B4,
> + 5 << ISRC_CFG_DP_ENC0_P0_SHIFT,
> + ISRC_CFG_DP_ENC0_P0_MASK);
> + break;
> + case MTK_DP_SDP_DRM:
> + mtk_dp_sdp_trigger_packet(mtk_dp, packet->type);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31DC,
> + 5 << HDR0_CFG_DP_ENC0_P0_SHIFT,
> + HDR0_CFG_DP_ENC0_P0_MASK);
> + break;
> + case MTK_DP_SDP_ACM:
> + case MTK_DP_SDP_AVI:
> + case MTK_DP_SDP_AUI:
> + case MTK_DP_SDP_SPD:
> + case MTK_DP_SDP_MPEG:
> + case MTK_DP_SDP_NTSC:
> + case MTK_DP_SDP_VSP:
> + case MTK_DP_SDP_VSC:
> + case MTK_DP_SDP_EXT:
> + case MTK_DP_SDP_PPS0:
> + case MTK_DP_SDP_PPS1:
> + case MTK_DP_SDP_PPS2:
> + case MTK_DP_SDP_PPS3:
> + mtk_dp_sdp_trigger_packet(mtk_dp, packet->type);
> + // Enable periodic sending
> + mtk_dp_update_bits(
> + mtk_dp, mtk_dp_sdp_type_to_reg[packet->type] & 0xfffc,
> + 0x05 << ((mtk_dp_sdp_type_to_reg[packet->type] & 3) *
> + 8),
> + 0xff << ((mtk_dp_sdp_type_to_reg[packet->type] & 3) *
> + 8));
> + break;
> + default:
> + break;
> + }
> +}
> +
> +static void mtk_dp_sdp_vsc_ext_disable(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A0, 0,
> + BIT(7) | BIT(8) | BIT(12));
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_328C, 0, BIT(7));
> +}
> +
> +static void mtk_dp_aux_irq_clear(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_write(
> + mtk_dp, MTK_DP_AUX_P0_3640,
> + BIT(AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
> + BIT(AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT));
> +}
> +
> +static void mtk_dp_aux_set_cmd(struct mtk_dp *mtk_dp, u8 cmd, u32 addr)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3644, cmd,
> + MCU_REQUEST_COMMAND_AUX_TX_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3648, addr,
> + MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_364C, addr >> 16,
> + MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK);
> +}
> +
> +static void mtk_dp_aux_cmd_complete(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
> + BIT(MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT),
> + MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK |
> + PHY_FIFO_RST_AUX_TX_P0_MASK |
> + MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
> +}
> +
> +static void mtk_dp_aux_request_ready(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3630,
> + BIT(AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT),
> + AUX_TX_REQUEST_READY_AUX_TX_P0_MASK);
> +}
> +
> +static void mtk_dp_aux_fill_write_fifo(struct mtk_dp *mtk_dp, u8 *buf,
> + size_t length)
> +{
> + mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_AUX_P0_3708, buf, length);
> +}
> +
> +static void mtk_dp_aux_read_rx_fifo(struct mtk_dp *mtk_dp, u8 *buf,
> + size_t length, int read_delay)
> +{
> + int read_pos;
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620, 0,
> + AUX_RD_MODE_AUX_TX_P0_MASK);
> +
> + for (read_pos = 0; read_pos < length; read_pos++) {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
> + BIT(AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT),
> + AUX_RX_FIFO_READ_PULSE_TX_P0_MASK);
> + usleep_range(read_delay, read_delay * 2);
> + buf[read_pos] =
> + (u8)(mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3620) &
> + AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK >>
> + AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT);
> + }
> +}
> +
> +static void mtk_dp_aux_set_length(struct mtk_dp *mtk_dp, size_t length)
> +{
> + if (length > 0) {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
> + (length - 1)
> + << MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT,
> + MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0,
> + AUX_NO_LENGTH_AUX_TX_P0_MASK |
> + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
> + AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
> + } else {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
> + BIT(AUX_NO_LENGTH_AUX_TX_P0_SHIFT),
> + AUX_NO_LENGTH_AUX_TX_P0_MASK |
> + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
> + AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
> + }
> +}
> +
> +static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read)
> +{
> + int wait_reply = MTK_DP_AUX_WAIT_REPLY_COUNT;
> +
> + while (--wait_reply) {
> + u32 aux_irq_status;
> +
> + if (is_read) {
> + u32 fifo_status =
> + mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3618);
> +
> + if (fifo_status &
> + (AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK |
> + AUX_RX_FIFO_FULL_AUX_TX_P0_MASK)) {
> + return 0;
> + }
> + }
> +
> + aux_irq_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3640);
> + if (aux_irq_status & AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK)
> + return 0;
> +
> + if (aux_irq_status & AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK)
> + return -ETIMEDOUT;
> +
> + usleep_range(100, 500);
> + }
> +
> + return -ETIMEDOUT;
> +}
> +
> +static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd,
> + u32 addr, u8 *buf, size_t length)
> +{
> + int ret;
> + u32 reply_cmd;
> +
> + if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES ||
> + (cmd == DP_AUX_NATIVE_READ && !length)))
> + return -EINVAL;
> +
> + if (!is_read)
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
> + BIT(AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT),
> + AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK);
> +
> + mtk_dp_aux_cmd_complete(mtk_dp);
> + mtk_dp_aux_irq_clear(mtk_dp);
> + usleep_range(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US,
> + MTK_DP_AUX_WRITE_READ_WAIT_TIME_US * 2);
> +
> + mtk_dp_aux_set_cmd(mtk_dp, cmd, addr);
> + mtk_dp_aux_set_length(mtk_dp, length);
> +
> + if (!is_read) {
> + if (length)
> + mtk_dp_aux_fill_write_fifo(mtk_dp, buf, length);
> +
> + mtk_dp_update_bits(
> + mtk_dp, MTK_DP_AUX_P0_3704,
> + AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK,
> + AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK);
> + }
> +
> + mtk_dp_aux_request_ready(mtk_dp);
> +
> + ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read);
> +
> + reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) &
> + AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK;
> +
> + if (ret || reply_cmd) {
> + u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) &
> + AUX_RX_PHY_STATE_AUX_TX_P0_MASK;
> + if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) {
> + drm_err(mtk_dp->drm_dev,
> + "AUX Rx Aux hang, need SW reset\n");
> + ret = -EIO;
> + }
> +
> + mtk_dp_aux_cmd_complete(mtk_dp);
> + mtk_dp_aux_irq_clear(mtk_dp);
> +
> + usleep_range(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US,
> + MTK_DP_AUX_WRITE_READ_WAIT_TIME_US * 2);
> + return -ETIMEDOUT;
> + }
> +
> + if (!length) {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0,
> + AUX_NO_LENGTH_AUX_TX_P0_MASK |
> + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
> + AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
> + } else if (is_read) {
> + int read_delay;
> +
> + if (cmd == (DP_AUX_I2C_READ | DP_AUX_I2C_MOT) ||
> + cmd == DP_AUX_I2C_READ)
> + read_delay = 500;
> + else
> + read_delay = 100;
> +
> + mtk_dp_aux_read_rx_fifo(mtk_dp, buf, length, read_delay);
> + }
> +
> + mtk_dp_aux_cmd_complete(mtk_dp);
> + mtk_dp_aux_irq_clear(mtk_dp);
> + usleep_range(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US,
> + MTK_DP_AUX_WRITE_READ_WAIT_TIME_US * 2);
> +
> + return 0;
> +}
> +
> +static bool mtk_dp_set_swing_pre_emphasis(struct mtk_dp *mtk_dp, int lane_num,
> + int swing_val, int preemphasis)
> +{
> + u32 lane_shift = lane_num * DP_TX1_VOLT_SWING_SHIFT;
> +
> + if (lane_num < 0 || lane_num > 3)
> + return false;
> +
> + dev_dbg(mtk_dp->dev,
> + "link training swing_val= 0x%x, preemphasis = 0x%x\n",
> + swing_val, preemphasis);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
> + swing_val << (DP_TX0_VOLT_SWING_SHIFT + lane_shift),
> + DP_TX0_VOLT_SWING_MASK << lane_shift);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
> + preemphasis << (DP_TX0_PRE_EMPH_SHIFT + lane_shift),
> + DP_TX0_PRE_EMPH_MASK << lane_shift);
> +
> + return true;
> +}
> +
> +static void mtk_dp_reset_swing_pre_emphasis(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP, 0,
> + DP_TX0_VOLT_SWING_MASK | DP_TX1_VOLT_SWING_MASK |
> + DP_TX2_VOLT_SWING_MASK |
> + DP_TX3_VOLT_SWING_MASK |
> + DP_TX0_PRE_EMPH_MASK | DP_TX1_PRE_EMPH_MASK |
> + DP_TX2_PRE_EMPH_MASK | DP_TX3_PRE_EMPH_MASK);
> +}
> +
> +static void mtk_dp_fec_enable(struct mtk_dp *mtk_dp, bool enable)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
> + enable ? BIT(FEC_EN_DP_TRANS_P0_SHIFT) : 0,
> + FEC_EN_DP_TRANS_P0_MASK);
> +}
> +
> +static u32 mtk_dp_swirq_get_clear(struct mtk_dp *mtk_dp)
> +{
> + u32 irq_status = mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_35D0) &
> + SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK;
> +
> + if (irq_status) {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, irq_status,
> + SW_IRQ_CLR_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, 0,
> + SW_IRQ_CLR_DP_TRANS_P0_MASK);
> + }
> +
> + return irq_status;
> +}
> +
> +static u32 mtk_dp_hwirq_get_clear(struct mtk_dp *mtk_dp)
> +{
> + u8 irq_status = (mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3418) &
> + IRQ_STATUS_DP_TRANS_P0_MASK) >>
> + IRQ_STATUS_DP_TRANS_P0_SHIFT;
> +
> + if (irq_status) {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, irq_status,
> + IRQ_CLR_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, 0,
> + IRQ_CLR_DP_TRANS_P0_MASK);
> + }
> +
> + return irq_status;
> +}
> +
> +static void mtk_dp_hwirq_enable(struct mtk_dp *mtk_dp, bool enable)
> +{
> + u32 val = 0;
> +
> + if (!enable)
> + val = IRQ_MASK_DP_TRANS_P0_DISC_IRQ |
> + IRQ_MASK_DP_TRANS_P0_CONN_IRQ |
> + IRQ_MASK_DP_TRANS_P0_INT_IRQ;
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, val,
> + IRQ_MASK_DP_TRANS_P0_MASK);
> +}
> +
> +void mtk_dp_initialize_settings(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_342C,
> + XTAL_FREQ_DP_TRANS_P0_DEFAULT,
> + XTAL_FREQ_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
> + BIT(FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT),
> + FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
> + BIT(AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT),
> + AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0,
> + SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_IRQ_MASK, IRQ_MASK_AUX_TOP_IRQ,
> + IRQ_MASK_AUX_TOP_IRQ);
> +}
> +
> +static void mtk_dp_initialize_hpd_detect_settings(struct mtk_dp *mtk_dp)
> +{
> + // Debounce threshold
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
> + 8 << HPD_DEB_THD_DP_TRANS_P0_SHIFT,
> + HPD_DEB_THD_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
> + (HPD_INT_THD_DP_TRANS_P0_LOWER_500US |
> + HPD_INT_THD_DP_TRANS_P0_UPPER_1100US)
> + << HPD_INT_THD_DP_TRANS_P0_SHIFT,
> + HPD_INT_THD_DP_TRANS_P0_MASK);
> +
> + // Connect threshold 1.5ms + 5 x 0.1ms = 2ms
> + // Disconnect threshold 1.5ms + 5 x 0.1ms = 2ms
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
> + (5 << HPD_DISC_THD_DP_TRANS_P0_SHIFT) |
> + (5 << HPD_CONN_THD_DP_TRANS_P0_SHIFT),
> + HPD_DISC_THD_DP_TRANS_P0_MASK |
> + HPD_CONN_THD_DP_TRANS_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3430,
> + HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT,
> + HPD_INT_THD_ECO_DP_TRANS_P0_MASK);
> +}
> +
> +static void mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
> +{
> + // modify timeout threshold = 1595 [12 : 8]
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_360C, 0x1595,
> + AUX_TIMEOUT_THR_AUX_TX_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3658, 0,
> + AUX_TX_OV_EN_AUX_TX_P0_MASK);
> + // 25 for 26M
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3634,
> + 25 << AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT,
> + AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK);
> + // 13 for 26M
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3614,
> + 13 << AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT,
> + AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
> + BIT(MTK_ATOP_EN_AUX_TX_P0_SHIFT),
> + MTK_ATOP_EN_AUX_TX_P0_MASK);
> +}
> +
> +static void mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0,
> + VBID_VIDEO_MUTE_DP_ENC0_P0_MASK);
> + mtk_dp_set_color_format(mtk_dp, MTK_DP_COLOR_FORMAT_RGB_444);
> + mtk_dp_set_color_depth(mtk_dp, MTK_DP_COLOR_DEPTH_8BIT);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3368,
> + 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT,
> + BS2BS_MODE_DP_ENC1_P0_MASK);
> +
> + // dp tx encoder reset all sw
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
> + BIT(DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT),
> + DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
> + usleep_range(1000, 5000);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0,
> + DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_digital_sw_reset(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
> + BIT(DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT),
> + DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
> + usleep_range(1000, 5000);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C, 0,
> + DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
> +}
> +
> +static void mtk_dp_set_lanes(struct mtk_dp *mtk_dp, int lanes)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35F0,
> + lanes == 0 ? 0 : BIT(3), BIT(3) | BIT(2));
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, lanes,
> + LANE_NUM_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_34A4,
> + lanes << LANE_NUM_DP_TRANS_P0_SHIFT,
> + LANE_NUM_DP_TRANS_P0_MASK);
> +}
> +
> +static int link_rate_to_mb_per_s(struct mtk_dp *mtk_dp,
> + enum mtk_dp_linkrate linkrate)
> +{
> + switch (linkrate) {
> + default:
> + drm_err(mtk_dp->drm_dev,
> + "Implementation error, unknown linkrate %d\n",
> + linkrate);
> + fallthrough;
> + case MTK_DP_LINKRATE_RBR:
> + return 1620;
> + case MTK_DP_LINKRATE_HBR:
> + return 2700;
> + case MTK_DP_LINKRATE_HBR2:
> + return 5400;
> + case MTK_DP_LINKRATE_HBR3:
> + return 8100;
> + }
> +}
> +
> +static u32 check_cal_data_valid(u32 min, u32 max, u32 val, u32 default_val)
> +{
> + if (val < min || val > max)
> + return default_val;
> +
> + return val;
> +}
> +
> +static int mtk_dp_get_calibration_data(struct mtk_dp *mtk_dp)
> +{
> + struct dp_cal_data *cal_data = &mtk_dp->cal_data;
> + struct device *dev = mtk_dp->dev;
> + struct nvmem_cell *cell;
> + u32 *buf;
> + size_t len;
> +
> + cell = nvmem_cell_get(dev, "dp_calibration_data");
> + if (IS_ERR(cell)) {
> + dev_err(dev,
> + "Error: Failed to get nvmem cell dp_calibration_data\n");
> + return PTR_ERR(cell);
> + }
> +
> + buf = (u32 *)nvmem_cell_read(cell, &len);
> + nvmem_cell_put(cell);
> +
> + if (IS_ERR(buf) || ((len / sizeof(u32)) != 4)) {
> + dev_err(dev,
> + "Error: Failed to read nvmem_cell_read fail len %ld\n",
> + (len / sizeof(u32)));
> + return PTR_ERR(buf);
> + }
> +
> + if (mtk_dp_is_edp(mtk_dp)) {
> + cal_data->glb_bias_trim = check_cal_data_valid(
> + 1, 0x1e, (buf[3] >> 27) & 0x1f, 0xf);
> + cal_data->clktx_impse =
> + check_cal_data_valid(1, 0xe, (buf[0] >> 9) & 0xf, 0x8);
> + cal_data->ln0_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 28) & 0xf, 0x8);
> + cal_data->ln0_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 24) & 0xf, 0x8);
> + cal_data->ln1_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 20) & 0xf, 0x8);
> + cal_data->ln1_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 16) & 0xf, 0x8);
> + cal_data->ln2_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 12) & 0xf, 0x8);
> + cal_data->ln2_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 8) & 0xf, 0x8);
> + cal_data->ln3_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[2] >> 4) & 0xf, 0x8);
> + cal_data->ln3_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, buf[2] & 0xf, 0x8);
> + } else {
> + cal_data->glb_bias_trim = check_cal_data_valid(
> + 1, 0x1e, (buf[0] >> 27) & 0x1f, 0xf);
> + cal_data->clktx_impse =
> + check_cal_data_valid(1, 0xe, (buf[0] >> 13) & 0xf, 0x8);
> + cal_data->ln0_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 28) & 0xf, 0x8);
> + cal_data->ln0_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 24) & 0xf, 0x8);
> + cal_data->ln1_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 20) & 0xf, 0x8);
> + cal_data->ln1_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 16) & 0xf, 0x8);
> + cal_data->ln2_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 12) & 0xf, 0x8);
> + cal_data->ln2_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 8) & 0xf, 0x8);
> + cal_data->ln3_tx_impsel_pmos =
> + check_cal_data_valid(1, 0xe, (buf[1] >> 4) & 0xf, 0x8);
> + cal_data->ln3_tx_impsel_nmos =
> + check_cal_data_valid(1, 0xe, buf[1] & 0xf, 0x8);
> + }
> +
> + kfree(buf);
> +
> + return 0;
> +}
> +
> +void mtk_dp_set_cal_data(struct mtk_dp *mtk_dp)
> +{
> + struct dp_cal_data *cal_data = &mtk_dp->cal_data;
> +
> + mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_DPAUX_TX,
> + cal_data->clktx_impse << 20, RG_CKM_PT0_CKTX_IMPSEL);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_BIAS_GEN_00,
> + cal_data->glb_bias_trim << 16,
> + RG_XTP_GLB_BIAS_INTR_CTRL);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
> + cal_data->ln0_tx_impsel_pmos << 12,
> + RG_XTP_LN0_TX_IMPSEL_PMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0,
> + cal_data->ln0_tx_impsel_nmos << 16,
> + RG_XTP_LN0_TX_IMPSEL_NMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
> + cal_data->ln1_tx_impsel_pmos << 12,
> + RG_XTP_LN1_TX_IMPSEL_PMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1,
> + cal_data->ln1_tx_impsel_nmos << 16,
> + RG_XTP_LN1_TX_IMPSEL_NMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
> + cal_data->ln2_tx_impsel_pmos << 12,
> + RG_XTP_LN2_TX_IMPSEL_PMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2,
> + cal_data->ln2_tx_impsel_nmos << 16,
> + RG_XTP_LN2_TX_IMPSEL_NMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
> + cal_data->ln3_tx_impsel_pmos << 12,
> + RG_XTP_LN3_TX_IMPSEL_PMOS);
> + mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3,
> + cal_data->ln3_tx_impsel_nmos << 16,
> + RG_XTP_LN3_TX_IMPSEL_NMOS);
> +}
> +
> +static int mtk_dp_phy_configure(struct mtk_dp *mtk_dp,
> + enum mtk_dp_linkrate link_rate, int lane_count)
> +{
> + int ret;
> + union phy_configure_opts
> + phy_opts = { .dp = {
> + .link_rate = link_rate_to_mb_per_s(
> + mtk_dp, link_rate),
> + .set_rate = 1,
> + .lanes = lane_count,
> + .set_lanes = 1,
> + .ssc = mtk_dp->train_info.sink_ssc,
> + } };
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
> + DP_PWR_STATE_MASK);
> +
> + ret = phy_configure(mtk_dp->phy, &phy_opts);
> +
> + mtk_dp_set_cal_data(mtk_dp);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
> + DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
> + return ret;
> +}
> +
> +static void mtk_dp_set_idle_pattern(struct mtk_dp *mtk_dp, bool enable)
> +{
> + const u32 val = POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK |
> + POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK |
> + POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK |
> + POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK;
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3580, enable ? val : 0, val);
> +}
> +
> +static void mtk_dp_train_set_pattern(struct mtk_dp *mtk_dp, int pattern)
> +{
> + if (pattern < 0 || pattern > 4) {
> + drm_err(mtk_dp->drm_dev,
> + "Implementation error, no such pattern %d\n", pattern);
> + return;
> + }
> +
> + if (pattern == 1) // TPS1
> + mtk_dp_set_idle_pattern(mtk_dp, false);
> +
> + mtk_dp_update_bits(
> + mtk_dp, MTK_DP_TRANS_P0_3400,
> + pattern ? BIT(pattern - 1) << PATTERN1_EN_DP_TRANS_P0_SHIFT : 0,
> + PATTERN1_EN_DP_TRANS_P0_MASK | PATTERN2_EN_DP_TRANS_P0_MASK |
> + PATTERN3_EN_DP_TRANS_P0_MASK |
> + PATTERN4_EN_DP_TRANS_P0_MASK);
> +}
> +
> +static void mtk_dp_set_enhanced_frame_mode(struct mtk_dp *mtk_dp, bool enable)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
> + enable ? BIT(ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT) : 0,
> + ENHANCED_FRAME_EN_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_training_set_scramble(struct mtk_dp *mtk_dp, bool enable)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3404,
> + enable ? DP_SCR_EN_DP_TRANS_P0_MASK : 0,
> + DP_SCR_EN_DP_TRANS_P0_MASK);
> +}
> +
> +static void mtk_dp_video_mute(struct mtk_dp *mtk_dp, bool enable)
> +{
> + u32 val = BIT(VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT);
> +
> + if (enable)
> + val |= BIT(VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, val,
> + VIDEO_MUTE_SEL_DP_ENC0_P0_MASK |
> + VIDEO_MUTE_SW_DP_ENC0_P0_MASK);
> +
> + if (mtk_dp_is_edp(mtk_dp))
> + mtk_dp_sip_atf_call(MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable);
> + else
> + mtk_dp_sip_atf_call(MTK_DP_SIP_ATF_VIDEO_UNMUTE, enable);
> +}
> +
> +static void mtk_dp_audio_mute(struct mtk_dp *mtk_dp, bool mute)
> +{
> + if (mute) {
> + mtk_dp_update_bits(
> + mtk_dp, MTK_DP_ENC0_P0_3030,
> + BIT(VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT) |
> + BIT(VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT),
> + VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK |
> + VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3088, 0,
> + AU_EN_DP_ENC0_P0_MASK);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A4, 0,
> + AU_TS_CFG_DP_ENC0_P0_MASK);
> +
> + } else {
> + mtk_dp_update_bits(
> + mtk_dp, MTK_DP_ENC0_P0_3030, 0,
> + VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK |
> + VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK);
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3088,
> + BIT(AU_EN_DP_ENC0_P0_SHIFT),
> + AU_EN_DP_ENC0_P0_MASK);
> + // Send one every two frames
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A4, 0x0F,
> + AU_TS_CFG_DP_ENC0_P0_MASK);
> + }
> +}
> +
> +static void mtk_dp_power_enable(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, 0,
> + SW_RST_B_PHYD);
> + usleep_range(10, 200);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, SW_RST_B_PHYD,
> + SW_RST_B_PHYD);
> +}
> +
> +static void mtk_dp_power_disable(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_write(mtk_dp, MTK_DP_TOP_PWR_STATE, 0);
> + usleep_range(10, 200);
> + mtk_dp_write(mtk_dp, MTK_DP_0034,
> + DA_CKM_CKTX0_EN_FORCE_EN | DA_CKM_BIAS_LPF_EN_FORCE_VAL |
> + DA_CKM_BIAS_EN_FORCE_VAL |
> + DA_XTP_GLB_LDO_EN_FORCE_VAL |
> + DA_XTP_GLB_AVD10_ON_FORCE_VAL);
> + // Disable RX
> + mtk_dp_write(mtk_dp, MTK_DP_1040, 0);
> + mtk_dp_write(mtk_dp, MTK_DP_TOP_MEM_PD,
> + 0x550 | BIT(FUSE_SEL_SHIFT) | BIT(MEM_ISO_EN_SHIFT));
> +}
> +
> +static void mtk_dp_initialize_priv_data(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR2;
> + mtk_dp->train_info.lane_count = MTK_DP_MAX_LANES;
> + mtk_dp->train_info.irq_status = 0;
> + mtk_dp->train_info.cable_plugged_in = false;
> + mtk_dp->train_info.cable_state_change = false;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
> + mtk_dp->state = MTK_DP_STATE_INITIAL;
> +
> + mtk_dp->info.format = MTK_DP_COLOR_FORMAT_RGB_444;
> + mtk_dp->info.depth = MTK_DP_COLOR_DEPTH_8BIT;
> + memset(&mtk_dp->info.timings, 0, sizeof(struct mtk_dp_timings));
> + mtk_dp->info.timings.frame_rate = 60;
> +
> + mtk_dp->has_fec = false;
> + mtk_dp->audio_enable = false;
> +}
> +
> +static void mtk_dp_sdp_set_down_cnt_init(struct mtk_dp *mtk_dp,
> + u32 sram_read_start)
> +{
> + u32 sdp_down_cnt_init = 0;
> + u32 dc_offset;
> +
> + if (mtk_dp->info.timings.pix_rate_khz > 0)
> + sdp_down_cnt_init = sram_read_start *
> + mtk_dp->train_info.link_rate * 2700 * 8 /
> + (mtk_dp->info.timings.pix_rate_khz * 4);
> +
> + switch (mtk_dp->train_info.lane_count) {
> + case 1:
> + sdp_down_cnt_init = sdp_down_cnt_init > 0x1A ?
> + sdp_down_cnt_init :
> + 0x1A; //26
> + break;
> + case 2:
> + // case for LowResolution && High Audio Sample Rate
> + dc_offset = mtk_dp->info.timings.vtotal <= 525 ? 0x04 : 0x00;
> + sdp_down_cnt_init = sdp_down_cnt_init > 0x10 ?
> + sdp_down_cnt_init :
> + 0x10 + dc_offset; //20 or 16
> + break;
> + case 4:
> + default:
> + sdp_down_cnt_init =
> + sdp_down_cnt_init > 0x06 ? sdp_down_cnt_init : 0x06; //6
> + break;
> + }
> +
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
> + sdp_down_cnt_init
> + << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT,
> + SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
> +}
> +
> +static void mtk_dp_sdp_set_down_cnt_init_in_hblank(struct mtk_dp *mtk_dp)
> +{
> + int pix_clk_mhz;
> + u32 dc_offset;
> + u32 spd_down_cnt_init = 0;
> +
> + pix_clk_mhz = mtk_dp->info.format == MTK_DP_COLOR_FORMAT_YUV_420 ?
> + mtk_dp->info.timings.pix_rate_khz / 2000 :
> + mtk_dp->info.timings.pix_rate_khz / 1000;
> +
> + switch (mtk_dp->train_info.lane_count) {
> + case 1:
> + spd_down_cnt_init = 0x20;
> + break;
> + case 2:
> + dc_offset = (mtk_dp->info.timings.vtotal <= 525) ? 0x14 : 0x00;
> + spd_down_cnt_init = 0x18 + dc_offset;
> + break;
> + case 4:
> + default:
> + dc_offset = (mtk_dp->info.timings.vtotal <= 525) ? 0x08 : 0x00;
> + if (pix_clk_mhz > mtk_dp->train_info.link_rate * 27)
> + spd_down_cnt_init = 0x8;
> + else
> + spd_down_cnt_init = 0x10 + dc_offset;
> + break;
> + }
> + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364, spd_down_cnt_init,
> + SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
> +}
> +
> +static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
> +{
> + u32 sram_read_start = MTK_DP_TBC_BUF_READ_START_ADDR;
> +
> + if (mtk_dp->train_info.lane_count > 0) {
> + sram_read_start = min_t(
> + u32, MTK_DP_TBC_BUF_READ_START_ADDR,
> + mtk_dp->info.timings.vm.hactive /
> + (mtk_dp->train_info.lane_count * 4 * 2 * 2));
> + mtk_dp_set_sram_read_start(mtk_dp, sram_read_start);
> + }
> +
> + mtk_dp_setup_encoder(mtk_dp);
> + mtk_dp_sdp_set_down_cnt_init_in_hblank(mtk_dp);
> + mtk_dp_sdp_set_down_cnt_init(mtk_dp, sram_read_start);
> +}
> +
> +static void mtk_dp_calculate_pixrate(struct mtk_dp *mtk_dp)
> +{
> + int target_frame_rate = 60;
> + int target_pixel_clk;
> +
> + if (mtk_dp->info.timings.frame_rate > 0) {
> + target_frame_rate = mtk_dp->info.timings.frame_rate;
> + target_pixel_clk = (int)mtk_dp->info.timings.htotal *
> + (int)mtk_dp->info.timings.vtotal *
> + target_frame_rate;
> + } else if (mtk_dp->info.timings.pix_rate_khz > 0) {
> + target_pixel_clk = mtk_dp->info.timings.pix_rate_khz * 1000;
> + } else {
> + target_pixel_clk = (int)mtk_dp->info.timings.htotal *
> + (int)mtk_dp->info.timings.vtotal *
> + target_frame_rate;
> + }
> +
> + if (target_pixel_clk > 0)
> + mtk_dp->info.timings.pix_rate_khz = target_pixel_clk / 1000;
> +}
> +
> +static void mtk_dp_set_tx_out(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_msa_bypass_disable(mtk_dp);
> + mtk_dp_calculate_pixrate(mtk_dp);
> + mtk_dp_pg_disable(mtk_dp);
> + mtk_dp_setup_tu(mtk_dp);
> +}
> +
> +static void mtk_dp_edid_free(struct mtk_dp *mtk_dp)
> +{
> + mutex_lock(&mtk_dp->edid_lock);
> + kfree(mtk_dp->edid);
> + mtk_dp->edid = NULL;
> + mutex_unlock(&mtk_dp->edid_lock);
> +}
> +
> +static void mtk_dp_hpd_sink_event(struct mtk_dp *mtk_dp)
> +{
> + ssize_t ret;
> + u8 sink_count;
> + u8 link_status[DP_LINK_STATUS_SIZE] = {};
> + u32 sink_count_reg;
> + u32 link_status_reg;
> + bool locked;
> +
> + sink_count_reg = DP_SINK_COUNT_ESI;
> + link_status_reg = DP_LANE0_1_STATUS;
> +
> + ret = drm_dp_dpcd_readb(&mtk_dp->aux, sink_count_reg, &sink_count);
> + if (ret < 0) {
> + drm_info(mtk_dp->drm_dev, "Read sink count failed: %ld\n", ret);
> + return;
> + }
> +
> + ret = drm_dp_dpcd_readb(&mtk_dp->aux, DP_SINK_COUNT, &sink_count);
> + if (ret < 0) {
> + drm_info(mtk_dp->drm_dev,
> + "Read DP_SINK_COUNT_ESI failed: %ld\n", ret);
> + return;
> + }
> +
> + ret = drm_dp_dpcd_read(&mtk_dp->aux, link_status_reg, link_status,
> + sizeof(link_status));
> + if (!ret) {
> + drm_info(mtk_dp->drm_dev, "Read link status failed: %ld\n",
> + ret);
> + return;
> + }
> +
> + locked = drm_dp_channel_eq_ok(link_status,
> + mtk_dp->train_info.lane_count);
> + if (!locked && mtk_dp->train_state > MTK_DP_TRAIN_STATE_TRAINING_PRE)
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE;
> +
> + if (link_status[1] & DP_REMOTE_CONTROL_COMMAND_PENDING)
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
> + DP_REMOTE_CONTROL_COMMAND_PENDING);
> +
> + if (DP_GET_SINK_COUNT(sink_count) &&
> + (link_status[2] & DP_DOWNSTREAM_PORT_STATUS_CHANGED)) {
> + mtk_dp_edid_free(mtk_dp);
> + mtk_dp->train_info.check_cap_count = 0;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID;
> + msleep(20);
> + }
> +}
> +
> +static void mtk_dp_sdp_stop_sending(struct mtk_dp *mtk_dp)
> +{
> + u8 packet_type;
> +
> + for (packet_type = MTK_DP_SDP_ACM; packet_type < MTK_DP_SDP_MAX_NUM;
> + packet_type++)
> + mtk_dp_disable_sdp(mtk_dp, packet_type);
> +
> + mtk_dp_sdp_vsc_ext_disable(mtk_dp);
> +}
> +
> +static void mtk_dp_train_update_swing_pre(struct mtk_dp *mtk_dp, int lanes,
> + u8 dpcd_adjust_req[2])
> +{
> + int lane;
> +
> + for (lane = 0; lane < lanes; ++lane) {
> + u8 val;
> + u8 swing;
> + u8 preemphasis;
> + int index = lane / 2;
> + int shift = lane % 2 ? DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : 0;
> +
> + swing = (dpcd_adjust_req[index] >> shift) &
> + DP_ADJUST_VOLTAGE_SWING_LANE0_MASK;
> + preemphasis = ((dpcd_adjust_req[index] >> shift) &
> + DP_ADJUST_PRE_EMPHASIS_LANE0_MASK) >>
> + DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT;
> + val = swing << DP_TRAIN_VOLTAGE_SWING_SHIFT |
> + preemphasis << DP_TRAIN_PRE_EMPHASIS_SHIFT;
> +
> + if (swing == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)
> + val |= DP_TRAIN_MAX_SWING_REACHED;
> + if (preemphasis == 3)
> + val |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
> +
> + mtk_dp_set_swing_pre_emphasis(mtk_dp, lane, swing, preemphasis);
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_LANE0_SET + lane,
> + val);
> + }
> +
> + // Wait for the signal to be stable enough
> + usleep_range(2000, 5000);
> +}
> +
> +static void mtk_dp_read_link_status(struct mtk_dp *mtk_dp,
> + u8 link_status[DP_LINK_STATUS_SIZE])
> +{
> + drm_dp_dpcd_read(&mtk_dp->aux, DP_LANE0_1_STATUS, link_status,
> + DP_LINK_STATUS_SIZE);
> +}
> +
> +static int mtk_dp_train_flow(struct mtk_dp *mtk_dp, int target_link_rate,
> + int target_lane_count)
> +{
> + u8 link_status[DP_LINK_STATUS_SIZE] = {};
> + u8 lane_adjust[2] = {};
> + bool pass_tps1 = false;
> + bool pass_tps2_3 = false;
> + int train_retries;
> + int status_control;
> + int iteration_count;
> + u8 prev_lane_adjust;
> + u8 val;
> +
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LINK_BW_SET, target_link_rate);
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
> + target_lane_count | DP_LANE_COUNT_ENHANCED_FRAME_EN);
> +
> + if (mtk_dp->train_info.sink_ssc)
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DOWNSPREAD_CTRL,
> + DP_SPREAD_AMP_0_5);
> +
> + train_retries = 0;
> + status_control = 0;
> + iteration_count = 1;
> + prev_lane_adjust = 0xFF;
> +
> + mtk_dp_set_lanes(mtk_dp, target_lane_count / 2);
> + mtk_dp_phy_configure(mtk_dp, target_link_rate, target_lane_count);
> +
> + dev_dbg(mtk_dp->dev,
> + "Link train target_link_rate = 0x%x, target_lane_count = 0x%x\n",
> + target_link_rate, target_lane_count);
> +
> + do {
> + train_retries++;
> + if (!mtk_dp->train_info.cable_plugged_in ||
> + ((mtk_dp->train_info.irq_status & MTK_DP_HPD_DISCONNECT) !=
> + 0x0)) {
> + return -ENODEV;
> + }
> +
> + if (mtk_dp->train_state < MTK_DP_TRAIN_STATE_TRAINING)
> + return -EAGAIN;
> +
> + if (!pass_tps1) {
> + mtk_dp_training_set_scramble(mtk_dp, false);
> +
> + if (status_control == 0) {
> + status_control = 1;
> + mtk_dp_train_set_pattern(mtk_dp, 1);
> + val = DP_LINK_SCRAMBLING_DISABLE |
> + DP_TRAINING_PATTERN_1;
> + drm_dp_dpcd_writeb(
> + &mtk_dp->aux, DP_TRAINING_PATTERN_SET,
> + DP_LINK_SCRAMBLING_DISABLE |
> + DP_TRAINING_PATTERN_1);
> + drm_dp_dpcd_read(&mtk_dp->aux,
> + DP_ADJUST_REQUEST_LANE0_1,
> + lane_adjust,
> + sizeof(lane_adjust));
> + iteration_count++;
> +
> + mtk_dp_train_update_swing_pre(
> + mtk_dp, target_lane_count, lane_adjust);
> + }
> +
> + drm_dp_link_train_clock_recovery_delay(&mtk_dp->aux,
> + mtk_dp->rx_cap);
> + mtk_dp_read_link_status(mtk_dp, link_status);
> +
> + if (drm_dp_clock_recovery_ok(link_status,
> + target_lane_count)) {
> + mtk_dp->train_info.cr_done = true;
> + pass_tps1 = true;
> + train_retries = 0;
> + iteration_count = 1;
> + dev_dbg(mtk_dp->dev, "Link train CR pass\n");
> + } else if (prev_lane_adjust == link_status[4]) {
> + iteration_count++;
> + if (prev_lane_adjust &
> + DP_ADJUST_VOLTAGE_SWING_LANE0_MASK)
> + break;
> + } else {
> + prev_lane_adjust = link_status[4];
> + }
> + dev_dbg(mtk_dp->dev, "Link train CQ fail\n");
> + } else if (pass_tps1 && !pass_tps2_3) {
> + if (status_control == 1) {
> + status_control = 2;
> + if (mtk_dp->train_info.tps4) {
> + mtk_dp_train_set_pattern(mtk_dp, 4);
> + val = DP_TRAINING_PATTERN_4;
> + } else if (mtk_dp->train_info.tps3) {
> + mtk_dp_train_set_pattern(mtk_dp, 3);
> + val = DP_LINK_SCRAMBLING_DISABLE |
> + DP_TRAINING_PATTERN_3;
> + } else {
> + mtk_dp_train_set_pattern(mtk_dp, 2);
> + val = DP_LINK_SCRAMBLING_DISABLE |
> + DP_TRAINING_PATTERN_2;
> + }
> + drm_dp_dpcd_writeb(&mtk_dp->aux,
> + DP_TRAINING_PATTERN_SET,
> + val);
> +
> + drm_dp_dpcd_read(&mtk_dp->aux,
> + DP_ADJUST_REQUEST_LANE0_1,
> + lane_adjust,
> + sizeof(lane_adjust));
> +
> + iteration_count++;
> + mtk_dp_train_update_swing_pre(
> + mtk_dp, target_lane_count, lane_adjust);
> + }
> +
> + drm_dp_link_train_channel_eq_delay(&mtk_dp->aux,
> + mtk_dp->rx_cap);
> +
> + mtk_dp_read_link_status(mtk_dp, link_status);
> +
> + if (!drm_dp_clock_recovery_ok(link_status,
> + target_lane_count)) {
> + mtk_dp->train_info.cr_done = false;
> + mtk_dp->train_info.eq_done = false;
> + dev_dbg(mtk_dp->dev, "Link train EQ fail\n");
> + break;
> + }
> +
> + if (drm_dp_channel_eq_ok(link_status,
> + target_lane_count)) {
> + mtk_dp->train_info.eq_done = true;
> + pass_tps2_3 = true;
> + dev_dbg(mtk_dp->dev, "Link train EQ pass\n");
> + break;
> + }
> +
> + if (prev_lane_adjust == link_status[4])
> + iteration_count++;
> + else
> + prev_lane_adjust = link_status[4];
> + }
> +
> + drm_dp_dpcd_read(&mtk_dp->aux, DP_ADJUST_REQUEST_LANE0_1,
> + lane_adjust, sizeof(lane_adjust));
> + mtk_dp_train_update_swing_pre(mtk_dp, target_lane_count,
> + lane_adjust);
> + } while (train_retries < MTK_DP_TRAIN_RETRY_LIMIT &&
> + iteration_count < MTK_DP_TRAIN_MAX_ITERATIONS);
> +
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
> + DP_TRAINING_PATTERN_DISABLE);
> + mtk_dp_train_set_pattern(mtk_dp, 0);
> +
> + if (pass_tps2_3) {
> + mtk_dp->train_info.link_rate = target_link_rate;
> + mtk_dp->train_info.lane_count = target_lane_count;
> +
> + mtk_dp_training_set_scramble(mtk_dp, true);
> +
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
> + target_lane_count |
> + DP_LANE_COUNT_ENHANCED_FRAME_EN);
> + mtk_dp_set_enhanced_frame_mode(mtk_dp, true);
> +
> + return 0;
> + }
> +
> + return -ETIMEDOUT;
> +}
> +
> +static bool mtk_dp_parse_capabilities(struct mtk_dp *mtk_dp)
> +{
> + u8 buf[DP_RECEIVER_CAP_SIZE] = {};
> + u8 val;
> + struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
> +
> + if (!mtk_dp_plug_state(mtk_dp))
> + return false;
> +
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
> + usleep_range(2000, 5000);
> +
> + drm_dp_read_dpcd_caps(&mtk_dp->aux, buf);
> +
> + memcpy(mtk_dp->rx_cap, buf, min(sizeof(mtk_dp->rx_cap), sizeof(buf)));
> + mtk_dp->rx_cap[DP_TRAINING_AUX_RD_INTERVAL] &= DP_TRAINING_AUX_RD_MASK;
> +
> + train_info->link_rate =
> + min_t(int, MTK_DP_MAX_LINK_RATE, buf[DP_MAX_LINK_RATE]);
> + train_info->lane_count =
> + min_t(int, MTK_DP_MAX_LANES, drm_dp_max_lane_count(buf));
> +
> + train_info->tps3 = drm_dp_tps3_supported(buf);
> + train_info->tps4 = drm_dp_tps4_supported(buf);
> +
> + train_info->sink_ssc =
> + !!(buf[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5);
> +
> + train_info->sink_ssc = false;
> +
> + drm_dp_dpcd_readb(&mtk_dp->aux, DP_MSTM_CAP, &val);
> + if (val & DP_MST_CAP) {
> + // Clear DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0
> + drm_dp_dpcd_readb(&mtk_dp->aux,
> + DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0, &val);
> + if (val)
> + drm_dp_dpcd_writeb(&mtk_dp->aux,
> + DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0,
> + val);
> + }
> +
> + return true;
> +}
> +
> +static int mtk_dp_edid_parse_audio_capabilities(struct mtk_dp *mtk_dp,
> + struct mtk_dp_audio_cfg *cfg)
> +{
> + struct cea_sad *sads;
> + int sad_count;
> + int i;
> + int ret = 0;
> +
> + mutex_lock(&mtk_dp->edid_lock);
> + if (!mtk_dp->edid) {
> + mutex_unlock(&mtk_dp->edid_lock);
> + dev_err(mtk_dp->dev, "EDID not found!\n");
> + return -EINVAL;
> + }
> +
> + sad_count = drm_edid_to_sad(mtk_dp->edid, &sads);
> + mutex_unlock(&mtk_dp->edid_lock);
> + if (sad_count <= 0) {
> + drm_info(mtk_dp->drm_dev, "The SADs is NULL\n");
> + return 0;
> + }
> +
> + for (i = 0; i < sad_count; i++) {
> + int sample_rate;
> + int word_length;
> + // Only PCM supported at the moment
> + if (sads[i].format != HDMI_AUDIO_CODING_TYPE_PCM)
> + continue;
> +
> + sample_rate = drm_cea_sad_get_sample_rate(&sads[i]);
> + word_length =
> + drm_cea_sad_get_uncompressed_word_length(&sads[i]);
> + if (sample_rate <= 0 || word_length <= 0)
> + continue;
> +
> + cfg->channels = sads[i].channels;
> + cfg->word_length_bits = word_length;
> + cfg->sample_rate = sample_rate;
> + ret = 1;
> + break;
> + }
> + kfree(sads);
> +
> + return ret;
> +}
> +
> +static void mtk_dp_train_change_mode(struct mtk_dp *mtk_dp)
> +{
> + phy_reset(mtk_dp->phy);
> + mtk_dp_reset_swing_pre_emphasis(mtk_dp);
> +
> + usleep_range(2000, 5000);
> +}
> +
> +static int mtk_dp_train_start(struct mtk_dp *mtk_dp)
> +{
> + int ret = 0;
> + int lane_count;
> + int link_rate;
> + int train_limit;
> + int max_link_rate;
> + int plug_wait;
> +
> + for (plug_wait = 7; !mtk_dp_plug_state(mtk_dp) && plug_wait > 0;
> + --plug_wait)
> + usleep_range(1000, 5000);
> + if (plug_wait == 0) {
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
> + return -ENODEV;
> + }
> +
> + link_rate = mtk_dp->rx_cap[1];
> + lane_count = mtk_dp->rx_cap[2] & 0x1F;
> +
> + mtk_dp->train_info.link_rate = min(MTK_DP_MAX_LINK_RATE, link_rate);
> + mtk_dp->train_info.lane_count = min(MTK_DP_MAX_LANES, lane_count);
> + link_rate = mtk_dp->train_info.link_rate;
> + lane_count = mtk_dp->train_info.lane_count;
> +
> + switch (link_rate) {
> + case MTK_DP_LINKRATE_RBR:
> + case MTK_DP_LINKRATE_HBR:
> + case MTK_DP_LINKRATE_HBR2:
> + case MTK_DP_LINKRATE_HBR25:
> + case MTK_DP_LINKRATE_HBR3:
> + break;
> + default:
> + mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR3;
> + break;
> + };
> +
> + max_link_rate = link_rate;
> + for (train_limit = 0; train_limit <= 6; ++train_limit) {
> + mtk_dp->train_info.cr_done = false;
> + mtk_dp->train_info.eq_done = false;
> +
> + mtk_dp_train_change_mode(mtk_dp);
> + ret = mtk_dp_train_flow(mtk_dp, link_rate, lane_count);
> + if (ret == -ENODEV || ret == -EAGAIN)
> + return ret;
> +
> + if (!mtk_dp->train_info.cr_done) {
> + switch (link_rate) {
> + case MTK_DP_LINKRATE_RBR:
> + lane_count = lane_count / 2;
> + link_rate = max_link_rate;
> + if (lane_count == 0x0) {
> + mtk_dp->train_state =
> + MTK_DP_TRAIN_STATE_DPIDLE;
> + return -EIO;
> + }
> + break;
> + case MTK_DP_LINKRATE_HBR:
> + link_rate = MTK_DP_LINKRATE_RBR;
> + break;
> + case MTK_DP_LINKRATE_HBR2:
> + link_rate = MTK_DP_LINKRATE_HBR;
> + break;
> + case MTK_DP_LINKRATE_HBR3:
> + link_rate = MTK_DP_LINKRATE_HBR2;
> + break;
> + default:
> + return -EINVAL;
> + };
> + } else if (!mtk_dp->train_info.eq_done) {
> + lane_count /= 2;
> + if (lane_count == 0)
> + return -EIO;
> + } else {
> + return 0;
> + }
> + }
> +
> + return -ETIMEDOUT;
> +}
> +
> +static int mtk_dp_train_handler(struct mtk_dp *mtk_dp)
> +{
> + int ret = 0;
> +
> + if (mtk_dp->train_state == MTK_DP_TRAIN_STATE_NORMAL)
> + return ret;
> +
> + switch (mtk_dp->train_state) {
> + case MTK_DP_TRAIN_STATE_STARTUP:
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP;
> + break;
> +
> + case MTK_DP_TRAIN_STATE_CHECKCAP:
> + if (mtk_dp_parse_capabilities(mtk_dp)) {
> + mtk_dp->train_info.check_cap_count = 0;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID;
> + } else {
> + mtk_dp->train_info.check_cap_count++;
> +
> + if (mtk_dp->train_info.check_cap_count >
> + MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT) {
> + mtk_dp->train_info.check_cap_count = 0;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
> + ret = -ETIMEDOUT;
> + }
> + }
> + break;
> +
> + case MTK_DP_TRAIN_STATE_CHECKEDID: {
> + int caps_found = mtk_dp_edid_parse_audio_capabilities(
> + mtk_dp, &mtk_dp->info.audio_caps);
> + mtk_dp->audio_enable = caps_found > 0;
> + if (!mtk_dp->audio_enable)
> + memset(&mtk_dp->info.audio_caps, 0,
> + sizeof(mtk_dp->info.audio_caps));
> + }
> +
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE;
> + break;
> +
> + case MTK_DP_TRAIN_STATE_TRAINING_PRE:
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
> + break;
> +
> + case MTK_DP_TRAIN_STATE_TRAINING:
> + ret = mtk_dp_train_start(mtk_dp);
> + if (!ret) {
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKTIMING;
> + mtk_dp_fec_enable(mtk_dp, mtk_dp->has_fec);
> + } else if (ret != -EAGAIN) {
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
> + }
> +
> + ret = 0;
> + break;
> +
> + case MTK_DP_TRAIN_STATE_CHECKTIMING:
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_NORMAL;
> + break;
> + case MTK_DP_TRAIN_STATE_NORMAL:
> + break;
> + case MTK_DP_TRAIN_STATE_POWERSAVE:
> + break;
> + case MTK_DP_TRAIN_STATE_DPIDLE:
> + break;
> + default:
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static void mtk_dp_video_enable(struct mtk_dp *mtk_dp, bool enable)
> +{
> + if (enable) {
> + mtk_dp_set_tx_out(mtk_dp);
> + mtk_dp_video_mute(mtk_dp, false);
> + } else {
> + mtk_dp_video_mute(mtk_dp, true);
> + }
> +}
> +
> +static void mtk_dp_audio_sdp_setup(struct mtk_dp *mtk_dp,
> + struct mtk_dp_audio_cfg *cfg)
> +{
> + struct mtk_dp_sdp_packet packet;
> + struct hdmi_audio_infoframe frame;
> +
> + hdmi_audio_infoframe_init(&frame);
> + frame.coding_type = HDMI_AUDIO_CODING_TYPE_PCM;
> + frame.channels = cfg->channels;
> + frame.sample_frequency = cfg->sample_rate;
> +
> + switch (cfg->word_length_bits) {
> + case 16:
> + frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
> + break;
> + case 20:
> + frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_20;
> + break;
> + case 24:
> + default:
> + frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_24;
> + break;
> + }
> +
> + packet.type = MTK_DP_SDP_AUI;
> + hdmi_audio_infoframe_pack_for_dp(&frame, &packet.sdp,
> + MTK_DP_DP_VERSION_11);
> +
> + mtk_dp_audio_sdp_asp_set_channels(mtk_dp, cfg->channels);
> + mtk_dp_setup_sdp(mtk_dp, &packet);
> +}
> +
> +static void mtk_dp_audio_setup(struct mtk_dp *mtk_dp,
> + struct mtk_dp_audio_cfg *cfg)
> +{
> + mtk_dp_audio_sdp_setup(mtk_dp, cfg);
> + mtk_dp_audio_channel_status_set(mtk_dp, cfg);
> +
> + mtk_dp_audio_setup_channels(mtk_dp, cfg);
> + mtk_dp_audio_set_divider(mtk_dp);
> +}
> +
> +static void mtk_dp_video_config(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_mn_overwrite_disable(mtk_dp);
> +
> + mtk_dp_set_msa(mtk_dp);
> +
> + mtk_dp_set_color_depth(mtk_dp, mtk_dp->info.depth);
> + mtk_dp_set_color_format(mtk_dp, mtk_dp->info.format);
> +}
> +
> +static int mtk_dp_state_handler(struct mtk_dp *mtk_dp)
> +{
> + int ret = 0;
> +
> + switch (mtk_dp->state) {
> + case MTK_DP_STATE_INITIAL:
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> + mtk_dp->state = MTK_DP_STATE_IDLE;
> + break;
> +
> + case MTK_DP_STATE_IDLE:
> + if (mtk_dp->train_state == MTK_DP_TRAIN_STATE_NORMAL)
> + mtk_dp->state = MTK_DP_STATE_PREPARE;
> + break;
> +
> + case MTK_DP_STATE_PREPARE:
> + mtk_dp_video_config(mtk_dp);
> + mtk_dp_video_enable(mtk_dp, true);
> +
> + if (mtk_dp->audio_enable) {
> + mtk_dp_audio_setup(mtk_dp, &mtk_dp->info.audio_caps);
> + mtk_dp_audio_mute(mtk_dp, false);
> + }
> +
> + mtk_dp->state = MTK_DP_STATE_NORMAL;
> + break;
> +
> + case MTK_DP_STATE_NORMAL:
> + if (mtk_dp->train_state != MTK_DP_TRAIN_STATE_NORMAL) {
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> + mtk_dp_sdp_stop_sending(mtk_dp);
> + mtk_dp->state = MTK_DP_STATE_IDLE;
> + }
> + break;
> +
> + default:
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static void mtk_dp_init_port(struct mtk_dp *mtk_dp)
> +{
> + mtk_dp_set_idle_pattern(mtk_dp, true);
> + mtk_dp_initialize_priv_data(mtk_dp);
> +
> + mtk_dp_initialize_settings(mtk_dp);
> + mtk_dp_initialize_aux_settings(mtk_dp);
> + mtk_dp_initialize_digital_settings(mtk_dp);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
> + BIT(RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT),
> + RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK);
> + mtk_dp_initialize_hpd_detect_settings(mtk_dp);
> +
> + mtk_dp_digital_sw_reset(mtk_dp);
> +}
> +
> +static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev)
> +{
> + struct mtk_dp *mtk_dp = dev;
> + int event;
> + u8 buf[DP_RECEIVER_CAP_SIZE] = {};
> +
> + event = mtk_dp_plug_state(mtk_dp) ? connector_status_connected :
> + connector_status_disconnected;
> +
> + if (event < 0)
> + return IRQ_HANDLED;
> +
> + if (mtk_dp->drm_dev) {
> + dev_info(mtk_dp->dev, "drm_helper_hpd_irq_event\n");
> + drm_helper_hpd_irq_event(mtk_dp->bridge.dev);
> + }
> +
> + if (mtk_dp->train_info.cable_state_change) {
> + mtk_dp->train_info.cable_state_change = false;
> +
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
> +
> + if (!mtk_dp->train_info.cable_plugged_in ||
> + !mtk_dp_plug_state(mtk_dp)) {
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> +
> + mtk_dp_initialize_priv_data(mtk_dp);
> + mtk_dp_set_idle_pattern(mtk_dp, true);
> + if (mtk_dp->has_fec)
> + mtk_dp_fec_enable(mtk_dp, false);
> + mtk_dp_sdp_stop_sending(mtk_dp);
> +
> + mtk_dp_edid_free(mtk_dp);
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
> + DP_PWR_STATE_BANDGAP_TPLL,
> + DP_PWR_STATE_MASK);
> + } else {
> + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
> + DP_PWR_STATE_BANDGAP_TPLL_LANE,
> + DP_PWR_STATE_MASK);
> + drm_dp_read_dpcd_caps(&mtk_dp->aux, buf);
> + mtk_dp->train_info.link_rate =
> + min_t(int, MTK_DP_MAX_LINK_RATE,
> + buf[DP_MAX_LINK_RATE]);
> + mtk_dp->train_info.lane_count =
> + min_t(int, MTK_DP_MAX_LANES,
> + drm_dp_max_lane_count(buf));
> + }
> + }
> +
> + if (mtk_dp->train_info.irq_status & MTK_DP_HPD_INTERRUPT) {
> + dev_info(mtk_dp->dev, "MTK_DP_HPD_INTERRUPT\n");
> + mtk_dp->train_info.irq_status &= ~MTK_DP_HPD_INTERRUPT;
> + mtk_dp_hpd_sink_event(mtk_dp);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mtk_dp_hpd_isr_handler(struct mtk_dp *mtk_dp)
> +{
> + bool connected;
> + u16 swirq_status = mtk_dp_swirq_get_clear(mtk_dp);
> + u8 hwirq_status = mtk_dp_hwirq_get_clear(mtk_dp);
> + struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
> +
> + train_info->irq_status |= hwirq_status | swirq_status;
> +
> + if (!train_info->irq_status)
> + return IRQ_HANDLED;
> +
> + connected = mtk_dp_plug_state(mtk_dp);
> + if (connected || !train_info->cable_plugged_in)
> + train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT;
> + else if (!connected || train_info->cable_plugged_in)
> + train_info->irq_status &= ~MTK_DP_HPD_CONNECT;
> +
> + if (!(train_info->irq_status &
> + (MTK_DP_HPD_CONNECT | MTK_DP_HPD_DISCONNECT)))
> + return IRQ_HANDLED;
> +
> + if (train_info->irq_status & MTK_DP_HPD_CONNECT) {
> + train_info->irq_status &= ~MTK_DP_HPD_CONNECT;
> + train_info->cable_plugged_in = true;
> + } else {
> + train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT;
> + train_info->cable_plugged_in = false;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
> + }
> + train_info->cable_state_change = true;
> + return IRQ_WAKE_THREAD;
> +}
> +
> +static irqreturn_t mtk_dp_hpd_event(int hpd, void *dev)
> +{
> + struct mtk_dp *mtk_dp = dev;
> + u32 irq_status;
> +
> + irq_status = mtk_dp_read(mtk_dp, MTK_DP_TOP_IRQ_STATUS);
> +
> + if (!irq_status)
> + return IRQ_HANDLED;
> +
> + if (irq_status & RGS_IRQ_STATUS_TRANSMITTER)
> + return mtk_dp_hpd_isr_handler(mtk_dp);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int mtk_dp_dt_parse_pdata(struct mtk_dp *mtk_dp,
> + struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + int ret = 0;
> + void __iomem *base;
> +
> + base = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(base))
> + return PTR_ERR(base);
> +
> + mtk_dp->regs = devm_regmap_init_mmio(dev, base, &mtk_dp_regmap_config);
> + if (IS_ERR(mtk_dp->regs))
> + return PTR_ERR(mtk_dp->regs);
> +
> + mtk_dp->dp_tx_clk = devm_clk_get(dev, "faxi");
> + if (IS_ERR(mtk_dp->dp_tx_clk)) {
> + ret = PTR_ERR(mtk_dp->dp_tx_clk);
> + dev_err(dev, "Failed to get dptx clock: %d\n", ret);
> + mtk_dp->dp_tx_clk = NULL;
> + }
> +
> + return 0;
> +}
> +
> +static void mtk_dp_update_plugged_status(struct mtk_dp *mtk_dp)
> +{
> + bool connected, has_audio;
> +
> + mutex_lock(&mtk_dp->update_plugged_status_lock);
> + connected = mtk_dp_plug_state(mtk_dp);
> + has_audio = drm_detect_monitor_audio(mtk_dp->edid);
> + if (mtk_dp->plugged_cb && mtk_dp->codec_dev)
> + mtk_dp->plugged_cb(mtk_dp->codec_dev, connected & has_audio);
> + mutex_unlock(&mtk_dp->update_plugged_status_lock);
> +}
> +
> +static enum drm_connector_status mtk_dp_bdg_detect(struct drm_bridge *bridge)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + enum drm_connector_status ret = connector_status_disconnected;
> + u8 sink_count = 0;
> +
> + if (mtk_dp_is_edp(mtk_dp))
> + return connector_status_connected;
> +
> + if (mtk_dp_plug_state(mtk_dp)) {
> + drm_dp_dpcd_readb(&mtk_dp->aux, DP_SINK_COUNT, &sink_count);
> + if (DP_GET_SINK_COUNT(sink_count))
> + ret = connector_status_connected;
> + }
> +
> + mtk_dp_update_plugged_status(mtk_dp);
> + return ret;
> +}
> +
> +static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge,
> + struct drm_connector *connector)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + bool enabled = mtk_dp->enabled;
> + struct edid *new_edid = NULL;
> +
> + if (!enabled)
> + drm_bridge_chain_pre_enable(bridge);
> +
> + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
> + usleep_range(2000, 5000);
> +
> + if (mtk_dp_plug_state(mtk_dp))
> + new_edid = drm_get_edid(connector, &mtk_dp->aux.ddc);
> +
> + if (!enabled)
> + drm_bridge_chain_post_disable(bridge);
> +
> + mutex_lock(&mtk_dp->edid_lock);
> + kfree(mtk_dp->edid);
> + mtk_dp->edid = NULL;
> +
> + if (!new_edid) {
> + mutex_unlock(&mtk_dp->edid_lock);
> + return NULL;
> + }
> +
> + mtk_dp->edid = drm_edid_duplicate(new_edid);
> + mutex_unlock(&mtk_dp->edid_lock);
> +
> + return new_edid;
> +}
> +
> +static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux,
> + struct drm_dp_aux_msg *msg)
> +{
> + ssize_t err = -EAGAIN;
> + struct mtk_dp *mtk_dp;
> + bool is_read;
> + u8 request;
> + size_t accessed_bytes = 0;
> + int retry = 3, ret = 0;
> +
> + mtk_dp = container_of(mtk_aux, struct mtk_dp, aux);
> +
> + if (!mtk_dp->train_info.cable_plugged_in ||
> + mtk_dp->train_info.irq_status & MTK_DP_HPD_DISCONNECT) {
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP;
> + err = -EAGAIN;
> + goto err;
> + }
> +
> + switch (msg->request) {
> + case DP_AUX_I2C_MOT:
> + case DP_AUX_I2C_WRITE:
> + case DP_AUX_NATIVE_WRITE:
> + case DP_AUX_I2C_WRITE_STATUS_UPDATE:
> + case DP_AUX_I2C_WRITE_STATUS_UPDATE | DP_AUX_I2C_MOT:
> + request = msg->request & ~DP_AUX_I2C_WRITE_STATUS_UPDATE;
> + is_read = false;
> + break;
> + case DP_AUX_I2C_READ:
> + case DP_AUX_NATIVE_READ:
> + case DP_AUX_I2C_READ | DP_AUX_I2C_MOT:
> + request = msg->request;
> + is_read = true;
> + break;
> + default:
> + drm_err(mtk_aux->drm_dev, "invalid aux cmd = %d\n",
> + msg->request);
> + err = -EINVAL;
> + goto err;
> + }
> +
> + if (msg->size == 0) {
> + mtk_dp_aux_do_transfer(mtk_dp, is_read, request,
> + msg->address + accessed_bytes,
> + msg->buffer + accessed_bytes, 0);
> + } else {
> + while (accessed_bytes < msg->size) {
> + size_t to_access =
> + min_t(size_t, DP_AUX_MAX_PAYLOAD_BYTES,
> + msg->size - accessed_bytes);
> + retry = 3;
> + while (retry--) {
> + ret = mtk_dp_aux_do_transfer(
> + mtk_dp, is_read, request,
> + msg->address + accessed_bytes,
> + msg->buffer + accessed_bytes,
> + to_access);
> + if (ret == 0)
> + break;
> + udelay(50);
> + }
> + if (!retry && ret) {
> + drm_info(mtk_dp->drm_dev,
> + "Failed to do AUX transfer: %d\n",
> + ret);
> + break;
> + }
> + accessed_bytes += to_access;
> + }
> + }
> +err:
> + if (!ret) {
> + msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
> + ret = msg->size;
> + } else {
> + msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK;
> + return err;
> + }
> +
> + msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
> + return msg->size;
> +}
> +
> +static void mtk_dp_aux_init(struct mtk_dp *mtk_dp)
> +{
> + drm_dp_aux_init(&mtk_dp->aux);
> + mtk_dp->aux.name = "aux_mtk_dp";
> + mtk_dp->aux.transfer = mtk_dp_aux_transfer;
> +}
> +
> +static void mtk_dp_poweroff(struct mtk_dp *mtk_dp)
> +{
> + mutex_lock(&mtk_dp->dp_lock);
> +
> + mtk_dp_hwirq_enable(mtk_dp, false);
> + mtk_dp_power_disable(mtk_dp);
> + phy_exit(mtk_dp->phy);
> + clk_disable_unprepare(mtk_dp->dp_tx_clk);
> +
> + mutex_unlock(&mtk_dp->dp_lock);
> +}
> +
> +static int mtk_dp_poweron(struct mtk_dp *mtk_dp)
> +{
> + int ret = 0;
> +
> + mutex_lock(&mtk_dp->dp_lock);
> +
> + ret = clk_prepare_enable(mtk_dp->dp_tx_clk);
> + if (ret < 0) {
> + dev_err(mtk_dp->dev, "Fail to enable clock: %d\n", ret);
> + goto err;
> + }
> + ret = phy_init(mtk_dp->phy);
> + if (ret) {
> + dev_err(mtk_dp->dev, "Failed to initialize phy: %d\n", ret);
> + goto err_phy_init;
> + }
> + ret = mtk_dp_phy_configure(mtk_dp, MTK_DP_LINKRATE_RBR, 1);
> + if (ret) {
> + dev_err(mtk_dp->dev, "Failed to configure phy: %d\n", ret);
> + goto err_phy_config;
> + }
> +
> + mtk_dp_init_port(mtk_dp);
> + mtk_dp_power_enable(mtk_dp);
> + mtk_dp_hwirq_enable(mtk_dp, true);
> +
> +err_phy_config:
> + phy_exit(mtk_dp->phy);
> +err_phy_init:
> + clk_disable_unprepare(mtk_dp->dp_tx_clk);
> +err:
> + mutex_unlock(&mtk_dp->dp_lock);
> + return ret;
> +}
> +
> +static int mtk_dp_bridge_attach(struct drm_bridge *bridge,
> + enum drm_bridge_attach_flags flags)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + int ret;
> +
> + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> + dev_err(mtk_dp->dev, "Driver does not provide a connector!");
> + return -EINVAL;
> + }
> +
> + ret = mtk_dp_poweron(mtk_dp);
> + if (ret)
> + return ret;
> +
> + if (mtk_dp->next_bridge) {
> + ret = drm_bridge_attach(bridge->encoder, mtk_dp->next_bridge,
> + &mtk_dp->bridge, flags);
> + if (ret) {
> + drm_warn(mtk_dp->drm_dev,
> + "Failed to attach external bridge: %d\n", ret);
> + goto err_bridge_attach;
> + }
> + }
> +
> + mtk_dp->drm_dev = bridge->dev;
> +
> + return 0;
> +
> +err_bridge_attach:
> + mtk_dp_poweroff(mtk_dp);
> + return ret;
> +}
> +
> +static void mtk_dp_bridge_detach(struct drm_bridge *bridge)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> +
> + mtk_dp->drm_dev = NULL;
> +
> + mtk_dp_poweroff(mtk_dp);
> +}
> +
> +static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge,
> + struct drm_bridge_state *old_state)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> +
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> + mtk_dp->state = MTK_DP_STATE_IDLE;
> + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
> +
> + mtk_dp->enabled = false;
> + msleep(100);
> +}
> +
> +static void mtk_dp_parse_drm_mode_timings(struct mtk_dp *mtk_dp,
> + struct drm_display_mode *mode)
> +{
> + struct mtk_dp_timings *timings = &mtk_dp->info.timings;
> +
> + drm_display_mode_to_videomode(mode, &timings->vm);
> + timings->frame_rate = mode->clock * 1000 / mode->htotal / mode->vtotal;
> + timings->htotal = mode->htotal;
> + timings->vtotal = mode->vtotal;
> +}
> +
> +static void mtk_dp_bridge_atomic_enable(struct drm_bridge *bridge,
> + struct drm_bridge_state *old_state)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + struct drm_connector *conn;
> + struct drm_connector_state *conn_state;
> + struct drm_crtc *crtc;
> + struct drm_crtc_state *crtc_state;
> + int ret = 0;
> + int i;
> +
> + conn = drm_atomic_get_new_connector_for_encoder(old_state->base.state,
> + bridge->encoder);
> + if (!conn) {
> + drm_err(mtk_dp->drm_dev,
> + "Can't enable bridge as connector is missing\n");
> + return;
> + }
> +
> + memcpy(mtk_dp->connector_eld, conn->eld, MAX_ELD_BYTES);
This should be protected by a mutex (just like any resource shared
between KMS and ALSA)
> + conn_state =
> + drm_atomic_get_new_connector_state(old_state->base.state, conn);
> + if (!conn_state) {
> + drm_err(mtk_dp->drm_dev,
> + "Can't enable bridge as connector state is missing\n");
> + return;
> + }
> +
> + crtc = conn_state->crtc;
> + if (!crtc) {
> + drm_err(mtk_dp->drm_dev,
> + "Can't enable bridge as connector state doesn't have a crtc\n");
> + return;
> + }
> +
> + crtc_state = drm_atomic_get_new_crtc_state(old_state->base.state, crtc);
> + if (!crtc_state) {
> + drm_err(mtk_dp->drm_dev,
> + "Can't enable bridge as crtc state is missing\n");
> + return;
> + }
> +
> + mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state->adjusted_mode);
> + if (!mtk_dp_parse_capabilities(mtk_dp)) {
> + drm_err(mtk_dp->drm_dev,
> + "Can't enable bridge as nothing is plugged in\n");
> + return;
> + }
> +
> + //training
> + for (i = 0; i < 50; i++) {
> + ret = mtk_dp_train_handler(mtk_dp);
> + if (ret) {
> + drm_err(mtk_dp->drm_dev, "Train handler failed %d\n",
> + ret);
> + return;
> + }
> +
> + ret = mtk_dp_state_handler(mtk_dp);
> + if (ret) {
> + drm_err(mtk_dp->drm_dev, "State handler failed %d\n",
> + ret);
> + return;
> + }
> + }
> +
> + mtk_dp->enabled = true;
> + mtk_dp_update_plugged_status(mtk_dp);
> +}
> +
> +static enum drm_mode_status
> +mtk_dp_bridge_mode_valid(struct drm_bridge *bridge,
> + const struct drm_display_info *info,
> + const struct drm_display_mode *mode)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + u32 rx_linkrate;
> + u32 bpp;
> +
> + bpp = info->color_formats & DRM_COLOR_FORMAT_YCRCB422 ? 16 : 24;
> + rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000;
> + if (rx_linkrate * mtk_dp->train_info.lane_count < mode->clock * bpp / 8)
> + return MODE_CLOCK_HIGH;
> +
> + if (mode->clock > 600000)
> + return MODE_CLOCK_HIGH;
> +
> + if ((mode->clock * 1000) / (mode->htotal * mode->vtotal) > 62)
> + return MODE_CLOCK_HIGH;
> +
> + return MODE_OK;
> +}
> +
> +static u32 *mtk_dp_bridge_atomic_get_output_bus_fmts(
> + struct drm_bridge *bridge, struct drm_bridge_state *bridge_state,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state, unsigned int *num_output_fmts)
> +{
> + u32 *output_fmts;
> +
> + *num_output_fmts = 0;
> + output_fmts = kcalloc(1, sizeof(*output_fmts), GFP_KERNEL);
> + if (!output_fmts)
> + return NULL;
> + *num_output_fmts = 1;
> + output_fmts[0] = MEDIA_BUS_FMT_FIXED;
> + return output_fmts;
> +}
> +
> +static const u32 mt8195_input_fmts[] = {
> + MEDIA_BUS_FMT_RGB888_1X24,
> + MEDIA_BUS_FMT_YUV8_1X24,
> + MEDIA_BUS_FMT_YUYV8_1X16,
> +};
> +
> +static u32 *mtk_dp_bridge_atomic_get_input_bus_fmts(
> + struct drm_bridge *bridge, struct drm_bridge_state *bridge_state,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state, u32 output_fmt,
> + unsigned int *num_input_fmts)
> +{
> + u32 *input_fmts;
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + struct drm_display_mode *mode = &crtc_state->adjusted_mode;
> + struct drm_display_info *display_info =
> + &conn_state->connector->display_info;
> + u32 rx_linkrate;
> + u32 bpp;
> +
> + bpp = (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB422) ? 16 :
> + 24;
> + rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000;
> + *num_input_fmts = 0;
> + input_fmts = kcalloc(ARRAY_SIZE(mt8195_input_fmts), sizeof(*input_fmts),
> + GFP_KERNEL);
> + if (!input_fmts)
> + return NULL;
> +
> + *num_input_fmts = ARRAY_SIZE(mt8195_input_fmts);
> +
> + memcpy(input_fmts, mt8195_input_fmts,
> + sizeof(*input_fmts) * ARRAY_SIZE(mt8195_input_fmts));
> +
> + if (((rx_linkrate * mtk_dp->train_info.lane_count) <
> + (mode->clock * 24 / 8)) &&
> + ((rx_linkrate * mtk_dp->train_info.lane_count) >
> + (mode->clock * 16 / 8)) &&
> + (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB422)) {
> + kfree(input_fmts);
> + input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
> + *num_input_fmts = 1;
> + input_fmts[0] = MEDIA_BUS_FMT_YUYV8_1X16;
> + }
> +
> + return input_fmts;
> +}
> +
> +static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge,
> + struct drm_bridge_state *bridge_state,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
> + unsigned int input_bus_format;
> +
> + input_bus_format = bridge_state->input_bus_cfg.format;
> +
> + dev_info(mtk_dp->dev, "input format 0x%04x, output format 0x%04x\n",
> + bridge_state->input_bus_cfg.format,
> + bridge_state->output_bus_cfg.format);
> +
> + mtk_dp->input_fmt = input_bus_format;
> + if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16)
> + mtk_dp->info.format = MTK_DP_COLOR_FORMAT_YUV_422;
> + else
> + mtk_dp->info.format = MTK_DP_COLOR_FORMAT_RGB_444;
> +
> + return 0;
> +}
> +
> +static const struct drm_bridge_funcs mtk_dp_bridge_funcs = {
> + .atomic_check = mtk_dp_bridge_atomic_check,
> + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
> + .atomic_get_output_bus_fmts = mtk_dp_bridge_atomic_get_output_bus_fmts,
> + .atomic_get_input_bus_fmts = mtk_dp_bridge_atomic_get_input_bus_fmts,
> + .atomic_reset = drm_atomic_helper_bridge_reset,
> + .attach = mtk_dp_bridge_attach,
> + .detach = mtk_dp_bridge_detach,
> + .atomic_enable = mtk_dp_bridge_atomic_enable,
> + .atomic_disable = mtk_dp_bridge_atomic_disable,
> + .mode_valid = mtk_dp_bridge_mode_valid,
> + .get_edid = mtk_dp_get_edid,
> + .detect = mtk_dp_bdg_detect,
> +};
> +
> +/*
> + * HDMI audio codec callbacks
> + */
> +static int mtk_dp_audio_hw_params(struct device *dev, void *data,
> + struct hdmi_codec_daifmt *daifmt,
> + struct hdmi_codec_params *params)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> + struct mtk_dp_audio_cfg cfg;
> +
> + if (!mtk_dp->enabled) {
> + pr_err("%s, DP is not ready!\n", __func__);
> + return -ENODEV;
> + }
> +
> + cfg.channels = params->cea.channels;
> + cfg.sample_rate = params->sample_rate;
> + cfg.word_length_bits = 24;
> +
> + mtk_dp_audio_setup(mtk_dp, &cfg);
> +
> + return 0;
> +}
> +
> +static int mtk_dp_audio_startup(struct device *dev, void *data)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> +
> + mtk_dp_audio_mute(mtk_dp, false);
> +
> + return 0;
> +}
> +
> +static void mtk_dp_audio_shutdown(struct device *dev, void *data)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> +
> + mtk_dp_audio_mute(mtk_dp, true);
> +}
> +
> +static int mtk_dp_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
> + size_t len)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> +
> + if (mtk_dp->enabled)
> + memcpy(buf, mtk_dp->connector_eld, len);
> + else
> + memset(buf, 0, len);
> +
> + return 0;
> +}
> +
> +static int mtk_dp_audio_hook_plugged_cb(struct device *dev, void *data,
> + hdmi_codec_plugged_cb fn,
> + struct device *codec_dev)
> +{
> + struct mtk_dp *mtk_dp = data;
> +
> + mutex_lock(&mtk_dp->update_plugged_status_lock);
> + mtk_dp->plugged_cb = fn;
> + mtk_dp->codec_dev = codec_dev;
> + mutex_unlock(&mtk_dp->update_plugged_status_lock);
> +
> + mtk_dp_update_plugged_status(mtk_dp);
> +
> + return 0;
> +}
> +
> +static const struct hdmi_codec_ops mtk_dp_audio_codec_ops = {
> + .hw_params = mtk_dp_audio_hw_params,
> + .audio_startup = mtk_dp_audio_startup,
> + .audio_shutdown = mtk_dp_audio_shutdown,
> + .get_eld = mtk_dp_audio_get_eld,
> + .hook_plugged_cb = mtk_dp_audio_hook_plugged_cb,
> + .no_capture_mute = 1,
> +};
> +
> +static int mtk_dp_register_audio_driver(struct device *dev)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> + struct hdmi_codec_pdata codec_data = {
> + .ops = &mtk_dp_audio_codec_ops,
> + .max_i2s_channels = 8,
> + .i2s = 1,
> + .data = mtk_dp,
> + };
> + struct platform_device *pdev;
> +
> + pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
> + PLATFORM_DEVID_AUTO, &codec_data,
> + sizeof(codec_data));
> + if (IS_ERR(pdev))
> + return PTR_ERR(pdev);
> +
> + return 0;
> +}
> +
> +static int mtk_dp_probe(struct platform_device *pdev)
> +{
> + struct mtk_dp *mtk_dp;
> + struct device *dev = &pdev->dev;
> + int ret;
> + int irq_num = 0;
> + struct drm_panel *panel = NULL;
> +
> + mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL);
> + if (!mtk_dp)
> + return -ENOMEM;
> +
> + mtk_dp->dev = dev;
> +
> + irq_num = platform_get_irq(pdev, 0);
> + if (irq_num < 0) {
> + dev_err(dev, "failed to request dp irq resource\n");
> + return -EPROBE_DEFER;
> + }
> +
> + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel,
> + &mtk_dp->next_bridge);
> + if (ret == -ENODEV) {
> + dev_info(
> + dev,
> + "No panel connected in devicetree, continuing as external DP\n");
> + mtk_dp->next_bridge = NULL;
> + } else if (ret) {
> + dev_err(dev, "Failed to find panel or bridge: %d\n", ret);
> + return ret;
> + }
> +
> + if (panel) {
> + mtk_dp->next_bridge = devm_drm_panel_bridge_add(dev, panel);
> + if (IS_ERR(mtk_dp->next_bridge)) {
> + ret = PTR_ERR(mtk_dp->next_bridge);
> + dev_err(dev, "Failed to create bridge: %d\n", ret);
> + return -EPROBE_DEFER;
> + }
> + }
You should be using devm_drm_of_get_bridge here
> + ret = mtk_dp_dt_parse_pdata(mtk_dp, pdev);
> + if (ret)
> + return ret;
pdata?
> +
> + mtk_dp_aux_init(mtk_dp);
> +
> + ret = devm_request_threaded_irq(dev, irq_num, mtk_dp_hpd_event,
> + mtk_dp_hpd_event_thread,
> + IRQ_TYPE_LEVEL_HIGH, dev_name(dev),
> + mtk_dp);
> + if (ret) {
> + dev_err(dev, "failed to request mediatek dptx irq\n");
> + return -EPROBE_DEFER;
> + }
> +
> + mutex_init(&mtk_dp->dp_lock);
> + mutex_init(&mtk_dp->edid_lock);
> +
> + platform_set_drvdata(pdev, mtk_dp);
> +
> + if (!mtk_dp_is_edp(mtk_dp)) {
> + mutex_init(&mtk_dp->update_plugged_status_lock);
> + ret = mtk_dp_register_audio_driver(dev);
> + if (ret) {
> + dev_err(dev, "Failed to register audio driver: %d\n",
> + ret);
> + return ret;
> + }
> + }
> +
> + mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy",
> + PLATFORM_DEVID_AUTO,
> + &mtk_dp->regs,
> + sizeof(&mtk_dp->regs));
> + if (IS_ERR(mtk_dp->phy_dev)) {
> + dev_err(dev, "Failed to create device mediatek-dp-phy: %ld\n",
> + PTR_ERR(mtk_dp->phy_dev));
> + return PTR_ERR(mtk_dp->phy_dev);
> + }
> +
> + mtk_dp_get_calibration_data(mtk_dp);
> +
> + mtk_dp->phy = dev_get_drvdata(&mtk_dp->phy_dev->dev);
> + if (IS_ERR(mtk_dp->phy)) {
> + dev_err(dev, "Failed to get phy: %ld\n", PTR_ERR(mtk_dp->phy));
> + platform_device_unregister(mtk_dp->phy_dev);
> + return PTR_ERR(mtk_dp->phy);
> + }
> +
> + mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
> + mtk_dp->bridge.of_node = dev->of_node;
> + if (mtk_dp_is_edp(mtk_dp))
> + mtk_dp->bridge.type = DRM_MODE_CONNECTOR_eDP;
> + else
> + mtk_dp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
> +
> + mtk_dp->bridge.ops =
> + DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD;
> + drm_bridge_add(&mtk_dp->bridge);
> +
> + pm_runtime_enable(dev);
> + pm_runtime_get_sync(dev);
> +
> + return 0;
> +}
> +
> +static int mtk_dp_remove(struct platform_device *pdev)
> +{
> + struct mtk_dp *mtk_dp = platform_get_drvdata(pdev);
> +
> + platform_device_unregister(mtk_dp->phy_dev);
> +
> + mtk_dp_video_mute(mtk_dp, true);
> + mtk_dp_audio_mute(mtk_dp, true);
> +
> + pm_runtime_disable(&pdev->dev);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int mtk_dp_suspend(struct device *dev)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> +
> + mtk_dp_power_disable(mtk_dp);
> + mtk_dp_hwirq_enable(mtk_dp, false);
> +
> + pm_runtime_put_sync(dev);
> +
> + return 0;
> +}
> +
> +static int mtk_dp_resume(struct device *dev)
> +{
> + struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
> +
> + pm_runtime_get_sync(dev);
> +
> + mtk_dp_init_port(mtk_dp);
> + mtk_dp_power_enable(mtk_dp);
> + mtk_dp_hwirq_enable(mtk_dp, true);
> +
> + return 0;
> +}
> +#endif
> +
> +static SIMPLE_DEV_PM_OPS(mtk_dp_pm_ops, mtk_dp_suspend, mtk_dp_resume);
> +
> +static const struct of_device_id mtk_dp_of_match[] = {
> + {
> + .compatible = "mediatek,mt8195-dp-tx",
> + },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, mtk_dp_of_match);
> +
> +struct platform_driver mtk_dp_driver = {
> + .probe = mtk_dp_probe,
> + .remove = mtk_dp_remove,
> + .driver = {
> + .name = "mediatek-drm-dp",
> + .of_match_table = mtk_dp_of_match,
> + .pm = &mtk_dp_pm_ops,
> + },
> +};
> +
> +MODULE_AUTHOR("Jason-JH.Lin <jason-jh.lin@...iatek.com>");
> +MODULE_AUTHOR("Markus Schneider-Pargmann <msp@...libre.com>");
> +MODULE_DESCRIPTION("MediaTek DisplayPort Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp_reg.h b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> new file mode 100644
> index 0000000000000..79952ac30e9e6
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> @@ -0,0 +1,568 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + * Copyright (c) 2021 BayLibre
> + */
> +#ifndef _MTK_DP_REG_H_
> +#define _MTK_DP_REG_H_
> +
> +#define MTK_DP_SIP_CONTROL_AARCH32 0x82000523
> +#define MTK_DP_SIP_ATF_VIDEO_UNMUTE 0x20
> +#define MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE 0x21
> +
> +#define DP_PHY_GLB_BIAS_GEN_00 0x0000
> +#define RG_XTP_GLB_BIAS_INTR_CTRL (0x1f << 16)
> +
> +#define DP_PHY_GLB_DPAUX_TX 0x0008
> +#define RG_CKM_PT0_CKTX_IMPSEL (0xf << 20)
> +
> +#define DP_PHY_LANE_TX_0 0x104
> +#define RG_XTP_LN0_TX_IMPSEL_PMOS (0xf << 12)
> +#define RG_XTP_LN0_TX_IMPSEL_NMOS (0xf << 16)
> +
> +#define DP_PHY_LANE_TX_1 0x204
> +#define RG_XTP_LN1_TX_IMPSEL_PMOS (0xf << 12)
> +#define RG_XTP_LN1_TX_IMPSEL_NMOS (0xf << 16)
> +
> +#define DP_PHY_LANE_TX_2 0x304
> +#define RG_XTP_LN2_TX_IMPSEL_PMOS (0xf << 12)
> +#define RG_XTP_LN2_TX_IMPSEL_NMOS (0xf << 16)
> +
> +#define DP_PHY_LANE_TX_3 0x404
> +#define RG_XTP_LN3_TX_IMPSEL_PMOS (0xf << 12)
> +#define RG_XTP_LN3_TX_IMPSEL_NMOS (0xf << 16)
> +
> +#define TOP_OFFSET 0x2000
> +#define ENC0_OFFSET 0x3000
> +#define ENC1_OFFSET 0x3200
> +#define TRANS_OFFSET 0x3400
> +#define AUX_OFFSET 0x3600
> +#define SEC_OFFSET 0x4000
> +
> +#define MTK_DP_HPD_DISCONNECT BIT(1)
> +#define MTK_DP_HPD_CONNECT BIT(2)
> +#define MTK_DP_HPD_INTERRUPT BIT(3)
> +
> +#define MTK_DP_0034 0x034
> +#define DA_XTP_GLB_CKDET_EN_FORCE_VAL BIT(15)
> +#define DA_XTP_GLB_CKDET_EN_FORCE_EN BIT(14)
> +#define DA_CKM_INTCKTX_EN_FORCE_VAL BIT(13)
> +#define DA_CKM_INTCKTX_EN_FORCE_EN BIT(12)
> +#define DA_CKM_CKTX0_EN_FORCE_VAL BIT(11)
> +#define DA_CKM_CKTX0_EN_FORCE_EN BIT(10)
> +#define DA_CKM_XTAL_CK_FORCE_VAL BIT(9)
> +#define DA_CKM_XTAL_CK_FORCE_EN BIT(8)
> +#define DA_CKM_BIAS_LPF_EN_FORCE_VAL BIT(7)
> +#define DA_CKM_BIAS_LPF_EN_FORCE_EN BIT(6)
> +#define DA_CKM_BIAS_EN_FORCE_VAL BIT(5)
> +#define DA_CKM_BIAS_EN_FORCE_EN BIT(4)
> +#define DA_XTP_GLB_AVD10_ON_FORCE_VAL BIT(3)
> +#define DA_XTP_GLB_AVD10_ON_FORCE BIT(2)
> +#define DA_XTP_GLB_LDO_EN_FORCE_VAL BIT(1)
> +#define DA_XTP_GLB_LDO_EN_FORCE_EN BIT(0)
> +
> +#define MTK_DP_1040 0x1040
> +#define RG_DPAUX_RX_VALID_DEGLITCH_EN BIT(2)
> +#define RG_XTP_GLB_CKDET_EN BIT(1)
> +#define RG_DPAUX_RX_EN BIT(0)
> +
> +#define MTK_DP_ENC0_P0_3000 (ENC0_OFFSET + 0x000)
> +#define LANE_NUM_DP_ENC0_P0_MASK 0x3
> +#define VIDEO_MUTE_SW_DP_ENC0_P0_MASK 0x4
> +#define VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT 2
> +#define VIDEO_MUTE_SEL_DP_ENC0_P0_MASK 0x8
> +#define VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT 3
> +#define ENHANCED_FRAME_EN_DP_ENC0_P0_MASK 0x10
> +#define ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT 4
> +
> +#define MTK_DP_ENC0_P0_3004 (ENC0_OFFSET + 0x004)
> +#define VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK 0x100
> +#define VIDEO_M_CODE_SEL_DP_ENC0_P0_SHIFT 8
> +#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK 0x200
> +#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT 9
> +
> +#define MTK_DP_ENC0_P0_3008 (ENC0_OFFSET + 0x008)
> +#define VIDEO_M_CODE_SW_0_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_300C (ENC0_OFFSET + 0x00C)
> +#define VIDEO_M_CODE_SW_1_DP_ENC0_P0_MASK 0xff
> +
> +#define MTK_DP_ENC0_P0_3010 (ENC0_OFFSET + 0x010)
> +#define HTOTAL_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3014 (ENC0_OFFSET + 0x014)
> +#define VTOTAL_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3018 (ENC0_OFFSET + 0x018)
> +#define HSTART_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_301C (ENC0_OFFSET + 0x01C)
> +#define VSTART_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3020 (ENC0_OFFSET + 0x020)
> +#define HWIDTH_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3024 (ENC0_OFFSET + 0x024)
> +#define VHEIGHT_SW_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3028 (ENC0_OFFSET + 0x028)
> +#define HSW_SW_DP_ENC0_P0_MASK 0x7fff
> +#define HSW_SW_DP_ENC0_P0_SHIFT 0
> +#define HSP_SW_DP_ENC0_P0_MASK 0x8000
> +
> +#define MTK_DP_ENC0_P0_302C (ENC0_OFFSET + 0x02C)
> +#define VSW_SW_DP_ENC0_P0_MASK 0x7fff
> +#define VSW_SW_DP_ENC0_P0_SHIFT 0
> +#define VSP_SW_DP_ENC0_P0_MASK 0x8000
> +
> +#define MTK_DP_ENC0_P0_3030 (ENC0_OFFSET + 0x030)
> +#define HTOTAL_SEL_DP_ENC0_P0_SHIFT 0
> +#define VTOTAL_SEL_DP_ENC0_P0_SHIFT 1
> +#define HSTART_SEL_DP_ENC0_P0_SHIFT 2
> +#define VSTART_SEL_DP_ENC0_P0_SHIFT 3
> +#define HWIDTH_SEL_DP_ENC0_P0_SHIFT 4
> +#define VHEIGHT_SEL_DP_ENC0_P0_SHIFT 5
> +#define HSP_SEL_DP_ENC0_P0_SHIFT 6
> +#define HSW_SEL_DP_ENC0_P0_SHIFT 7
> +#define VSP_SEL_DP_ENC0_P0_SHIFT 8
> +#define VSW_SEL_DP_ENC0_P0_SHIFT 9
> +#define VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK 0x800
> +#define VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT 11
> +#define VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK 0x1000
> +#define VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT 12
> +
> +#define MTK_DP_ENC0_P0_3034 (ENC0_OFFSET + 0x034)
> +
> +#define MTK_DP_ENC0_P0_3038 (ENC0_OFFSET + 0x038)
> +#define VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK 0x800
> +#define VIDEO_SOURCE_SEL_DP_ENC0_P0_SHIFT 11
> +
> +#define MTK_DP_ENC0_P0_303C (ENC0_OFFSET + 0x03C)
> +#define SRAM_START_READ_THRD_DP_ENC0_P0_MASK 0x3f
> +#define SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT 0
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK 0x700
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT 8
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT \
> + (0 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT \
> + (1 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT \
> + (2 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT \
> + (3 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
> +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT \
> + (4 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
> +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK 0x7000
> +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT 12
> +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB \
> + (0 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
> +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422 \
> + (1 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
> +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420 \
> + (2 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
> +#define VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK 0x8000
> +#define VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT 15
> +
> +#define MTK_DP_ENC0_P0_3040 (ENC0_OFFSET + 0x040)
> +#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK 0xfff
> +#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT 0
> +
> +#define MTK_DP_ENC0_P0_3044 (ENC0_OFFSET + 0x044)
> +#define VIDEO_N_CODE_0_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3048 (ENC0_OFFSET + 0x048)
> +#define VIDEO_N_CODE_1_DP_ENC0_P0_MASK 0xff
> +
> +#define MTK_DP_ENC0_P0_304C (ENC0_OFFSET + 0x04C)
> +#define VBID_VIDEO_MUTE_DP_ENC0_P0_MASK 0x4
> +#define SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK 0x100
> +
> +#define MTK_DP_ENC0_P0_3050 (ENC0_OFFSET + 0x050)
> +#define VIDEO_N_CODE_MN_GEN_0_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3054 (ENC0_OFFSET + 0x054)
> +#define VIDEO_N_CODE_MN_GEN_1_DP_ENC0_P0_MASK 0xff
> +
> +#define MTK_DP_ENC0_P0_3064 (ENC0_OFFSET + 0x064)
> +#define HDE_NUM_LAST_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3088 (ENC0_OFFSET + 0x088)
> +#define AU_EN_DP_ENC0_P0_MASK 0x40
> +#define AU_EN_DP_ENC0_P0_SHIFT 6
> +#define AUDIO_8CH_EN_DP_ENC0_P0_MASK 0x80
> +#define AUDIO_8CH_SEL_DP_ENC0_P0_MASK 0x100
> +#define AUDIO_2CH_EN_DP_ENC0_P0_MASK 0x4000
> +#define AUDIO_2CH_SEL_DP_ENC0_P0_MASK 0x8000
> +
> +#define MTK_DP_ENC0_P0_308C (ENC0_OFFSET + 0x08C)
> +#define CH_STATUS_0_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3090 (ENC0_OFFSET + 0x090)
> +#define CH_STATUS_1_DP_ENC0_P0_MASK 0xffff
> +
> +#define MTK_DP_ENC0_P0_3094 (ENC0_OFFSET + 0x094)
> +#define CH_STATUS_2_DP_ENC0_P0_MASK 0xff
> +
> +#define MTK_DP_ENC0_P0_30A0 (ENC0_OFFSET + 0x0A0)
> +
> +#define MTK_DP_ENC0_P0_30A4 (ENC0_OFFSET + 0x0A4)
> +#define AU_TS_CFG_DP_ENC0_P0_MASK 0xff
> +
> +#define MTK_DP_ENC0_P0_30A8 (ENC0_OFFSET + 0x0A8)
> +
> +#define MTK_DP_ENC0_P0_30AC (ENC0_OFFSET + 0x0AC)
> +
> +#define MTK_DP_ENC0_P0_30B0 (ENC0_OFFSET + 0x0B0)
> +
> +#define MTK_DP_ENC0_P0_30B4 (ENC0_OFFSET + 0x0B4)
> +#define ISRC_CFG_DP_ENC0_P0_MASK 0xff00
> +#define ISRC_CFG_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC0_P0_30B8 (ENC0_OFFSET + 0x0B8)
> +
> +#define MTK_DP_ENC0_P0_30BC (ENC0_OFFSET + 0x0BC)
> +#define ISRC_CONT_DP_ENC0_P0_MASK 0x1
> +#define ISRC_CONT_DP_ENC0_P0_SHIFT 0
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK 0x700
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT 8
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_2 \
> + (1 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_4 \
> + (2 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_8 \
> + (3 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2 \
> + (5 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_4 \
> + (6 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_8 \
> + (7 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT)
> +
> +#define MTK_DP_ENC0_P0_30D8 (ENC0_OFFSET + 0x0D8)
> +
> +#define MTK_DP_ENC0_P0_312C (ENC0_OFFSET + 0x12C)
> +#define ASP_HB2_DP_ENC0_P0_MASK 0xff
> +#define ASP_HB3_DP_ENC0_P0_MASK 0xff00
> +#define ASP_HB3_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC0_P0_3130 (ENC0_OFFSET + 0x130)
> +
> +#define MTK_DP_ENC0_P0_3138 (ENC0_OFFSET + 0x138)
> +
> +#define MTK_DP_ENC0_P0_3154 (ENC0_OFFSET + 0x154)
> +#define PGEN_HTOTAL_DP_ENC0_P0_MASK 0x3fff
> +
> +#define MTK_DP_ENC0_P0_3158 (ENC0_OFFSET + 0x158)
> +#define PGEN_HSYNC_RISING_DP_ENC0_P0_MASK 0x3fff
> +
> +#define MTK_DP_ENC0_P0_315C (ENC0_OFFSET + 0x15C)
> +#define PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK 0x3fff
> +
> +#define MTK_DP_ENC0_P0_3160 (ENC0_OFFSET + 0x160)
> +#define PGEN_HFDE_START_DP_ENC0_P0_MASK 0x3fff
> +
> +#define MTK_DP_ENC0_P0_3164 (ENC0_OFFSET + 0x164)
> +#define PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK 0x3fff
> +
> +#define MTK_DP_ENC0_P0_3168 (ENC0_OFFSET + 0x168)
> +#define PGEN_VTOTAL_DP_ENC0_P0_MASK 0x1fff
> +
> +#define MTK_DP_ENC0_P0_316C (ENC0_OFFSET + 0x16C)
> +#define PGEN_VSYNC_RISING_DP_ENC0_P0_MASK 0x1fff
> +
> +#define MTK_DP_ENC0_P0_3170 (ENC0_OFFSET + 0x170)
> +#define PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK 0x1fff
> +
> +#define MTK_DP_ENC0_P0_3174 (ENC0_OFFSET + 0x174)
> +#define PGEN_VFDE_START_DP_ENC0_P0_MASK 0x1fff
> +
> +#define MTK_DP_ENC0_P0_3178 (ENC0_OFFSET + 0x178)
> +#define PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK 0x1fff
> +
> +#define MTK_DP_ENC0_P0_31B0 (ENC0_OFFSET + 0x1B0)
> +#define PGEN_PATTERN_SEL_SHIFT 4
> +#define PGEN_PATTERN_SEL_MASK 0x0070
> +
> +#define MTK_DP_ENC0_P0_31C8 (ENC0_OFFSET + 0x1C8)
> +#define VSC_EXT_VESA_HB0_DP_ENC0_P0_MASK 0xff
> +#define VSC_EXT_VESA_HB1_DP_ENC0_P0_MASK 0xff00
> +#define VSC_EXT_VESA_HB1_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC0_P0_31CC (ENC0_OFFSET + 0x1CC)
> +#define VSC_EXT_VESA_HB2_DP_ENC0_P0_MASK 0xff
> +#define VSC_EXT_VESA_HB2_DP_ENC0_P0_SHIFT 0
> +#define VSC_EXT_VESA_HB3_DP_ENC0_P0_MASK 0xff00
> +
> +#define MTK_DP_ENC0_P0_31D0 (ENC0_OFFSET + 0x1D0)
> +#define VSC_EXT_CEA_HB0_DP_ENC0_P0_MASK 0xff
> +#define VSC_EXT_CEA_HB1_DP_ENC0_P0_MASK 0xff00
> +#define VSC_EXT_CEA_HB1_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC0_P0_31D4 (ENC0_OFFSET + 0x1D4)
> +#define VSC_EXT_CEA_HB2_DP_ENC0_P0_MASK 0xff
> +#define VSC_EXT_CEA_HB2_DP_ENC0_P0_SHIFT 0
> +#define VSC_EXT_CEA_HB3_DP_ENC0_P0_MASK 0xff00
> +
> +#define MTK_DP_ENC0_P0_31D8 (ENC0_OFFSET + 0x1D8)
> +#define VSC_EXT_VESA_NUM_DP_ENC0_P0_MASK 0x3f
> +#define VSC_EXT_VESA_NUM_DP_ENC0_P0_SHIFT 0
> +#define VSC_EXT_CEA_NUM_DP_ENC0_P0_MASK 0x3f00
> +#define VSC_EXT_CEA_NUM_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC0_P0_31DC (ENC0_OFFSET + 0x1DC)
> +#define HDR0_CFG_DP_ENC0_P0_MASK 0xff
> +#define HDR0_CFG_DP_ENC0_P0_SHIFT 0
> +
> +#define MTK_DP_ENC0_P0_31E8 (ENC0_OFFSET + 0x1E8)
> +
> +#define MTK_DP_ENC0_P0_31EC (ENC0_OFFSET + 0x1EC)
> +#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK 0x10
> +#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT 4
> +#define ISRC1_HB3_DP_ENC0_P0_MASK 0xff00
> +#define ISRC1_HB3_DP_ENC0_P0_SHIFT 8
> +
> +#define MTK_DP_ENC1_P0_3200 (ENC1_OFFSET + 0x000)
> +
> +#define MTK_DP_ENC1_P0_3280 (ENC1_OFFSET + 0x080)
> +#define SDP_PACKET_TYPE_DP_ENC1_P0_MASK 0x1f
> +#define SDP_PACKET_W_DP_ENC1_P0 0x20
> +#define SDP_PACKET_W_DP_ENC1_P0_MASK 0x20
> +#define SDP_PACKET_W_DP_ENC1_P0_SHIFT 5
> +
> +#define MTK_DP_ENC1_P0_328C (ENC1_OFFSET + 0x08C)
> +
> +#define MTK_DP_ENC1_P0_3290 (ENC1_OFFSET + 0x090)
> +
> +#define MTK_DP_ENC1_P0_32A0 (ENC1_OFFSET + 0x0A0)
> +
> +#define MTK_DP_ENC1_P0_32A4 (ENC1_OFFSET + 0x0A4)
> +
> +#define MTK_DP_ENC1_P0_3300 (ENC1_OFFSET + 0x100)
> +#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK 0x300
> +#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT 8
> +
> +#define MTK_DP_ENC1_P0_3304 (ENC1_OFFSET + 0x104)
> +#define AU_PRTY_REGEN_DP_ENC1_P0_MASK 0x100
> +#define AU_CH_STS_REGEN_DP_ENC1_P0_MASK 0x200
> +#define AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK 0x1000
> +
> +#define MTK_DP_ENC1_P0_3324 (ENC1_OFFSET + 0x124)
> +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK 0x300
> +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT 8
> +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX \
> + (0 << AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT)
> +
> +#define MTK_DP_ENC1_P0_3364 (ENC1_OFFSET + 0x164)
> +#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK 0xfff
> +#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT 0
> +#define FIFO_READ_START_POINT_DP_ENC1_P0_MASK 0xf000
> +#define FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT 12
> +
> +#define MTK_DP_ENC1_P0_3368 (ENC1_OFFSET + 0x168)
> +#define VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT 0
> +#define VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT 4
> +#define SDP_DP13_EN_DP_ENC1_P0_SHIFT 8
> +#define BS2BS_MODE_DP_ENC1_P0_MASK 0x3000
> +#define BS2BS_MODE_DP_ENC1_P0_SHIFT 12
> +
> +#define MTK_DP_ENC1_P0_33F4 (ENC1_OFFSET + 0x1F4)
> +
> +#define MTK_DP_TRANS_P0_3400 (TRANS_OFFSET + 0x000)
> +#define PATTERN1_EN_DP_TRANS_P0_MASK 0x1000
> +#define PATTERN1_EN_DP_TRANS_P0_SHIFT 12
> +#define PATTERN2_EN_DP_TRANS_P0_MASK 0x2000
> +#define PATTERN3_EN_DP_TRANS_P0_MASK 0x4000
> +#define PATTERN4_EN_DP_TRANS_P0_MASK 0x8000
> +
> +#define MTK_DP_TRANS_P0_3404 (TRANS_OFFSET + 0x004)
> +#define DP_SCR_EN_DP_TRANS_P0_MASK 0x1
> +
> +#define MTK_DP_TRANS_P0_340C (TRANS_OFFSET + 0x00C)
> +#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK 0x2000
> +#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT 13
> +
> +#define MTK_DP_TRANS_P0_3410 (TRANS_OFFSET + 0x010)
> +#define HPD_DEB_THD_DP_TRANS_P0_MASK 0xf
> +#define HPD_DEB_THD_DP_TRANS_P0_SHIFT 0
> +#define HPD_INT_THD_DP_TRANS_P0_MASK 0xf0
> +#define HPD_INT_THD_DP_TRANS_P0_SHIFT 4
> +#define HPD_INT_THD_DP_TRANS_P0_LOWER_500US (2 << HPD_INT_THD_DP_TRANS_P0_SHIFT)
> +#define HPD_INT_THD_DP_TRANS_P0_UPPER_1100US \
> + (2 << (HPD_INT_THD_DP_TRANS_P0_SHIFT + 2))
> +#define HPD_DISC_THD_DP_TRANS_P0_MASK 0xf00
> +#define HPD_DISC_THD_DP_TRANS_P0_SHIFT 8
> +#define HPD_CONN_THD_DP_TRANS_P0_MASK 0xf000
> +#define HPD_CONN_THD_DP_TRANS_P0_SHIFT 12
> +
> +#define MTK_DP_TRANS_P0_3414 (TRANS_OFFSET + 0x014)
> +#define HPD_DB_DP_TRANS_P0_MASK 0x4
> +
> +#define MTK_DP_TRANS_P0_3418 (TRANS_OFFSET + 0x018)
> +#define IRQ_CLR_DP_TRANS_P0_MASK 0xf
> +#define IRQ_MASK_DP_TRANS_P0_MASK 0xf0
> +#define IRQ_MASK_DP_TRANS_P0_SHIFT 4
> +#define IRQ_MASK_DP_TRANS_P0_DISC_IRQ (BIT(1) << IRQ_MASK_DP_TRANS_P0_SHIFT)
> +#define IRQ_MASK_DP_TRANS_P0_CONN_IRQ (BIT(2) << IRQ_MASK_DP_TRANS_P0_SHIFT)
> +#define IRQ_MASK_DP_TRANS_P0_INT_IRQ (BIT(3) << IRQ_MASK_DP_TRANS_P0_SHIFT)
> +#define IRQ_STATUS_DP_TRANS_P0_MASK 0xf000
> +#define IRQ_STATUS_DP_TRANS_P0_SHIFT 12
> +
> +#define MTK_DP_TRANS_P0_342C (TRANS_OFFSET + 0x02C)
> +#define XTAL_FREQ_DP_TRANS_P0_DEFAULT 0x69
> +#define XTAL_FREQ_DP_TRANS_P0_MASK 0xff
> +
> +#define MTK_DP_TRANS_P0_3430 (TRANS_OFFSET + 0x030)
> +#define HPD_INT_THD_ECO_DP_TRANS_P0_MASK 0x3
> +#define HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT BIT(1)
> +
> +#define MTK_DP_TRANS_P0_34A4 (TRANS_OFFSET + 0x0A4)
> +#define LANE_NUM_DP_TRANS_P0_MASK 0xc
> +#define LANE_NUM_DP_TRANS_P0_SHIFT 2
> +
> +#define MTK_DP_TRANS_P0_3540 (TRANS_OFFSET + 0x140)
> +#define FEC_EN_DP_TRANS_P0_MASK 0x1
> +#define FEC_EN_DP_TRANS_P0_SHIFT 0
> +#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK 0x8
> +#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT 3
> +
> +#define MTK_DP_TRANS_P0_3580 (TRANS_OFFSET + 0x180)
> +#define POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK 0x100
> +#define POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK 0x200
> +#define POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK 0x400
> +#define POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK 0x800
> +
> +#define MTK_DP_TRANS_P0_35C4 (TRANS_OFFSET + 0x1C4)
> +#define SW_IRQ_MASK_DP_TRANS_P0_MASK 0xffff
> +
> +#define MTK_DP_TRANS_P0_35C8 (TRANS_OFFSET + 0x1C8)
> +#define SW_IRQ_CLR_DP_TRANS_P0_MASK 0xffff
> +
> +#define SW_IRQ_STATUS_DP_TRANS_P0_MASK 0xffff
> +#define SW_IRQ_STATUS_DP_TRANS_P0_SHIFT 0
> +
> +#define MTK_DP_TRANS_P0_35D0 (TRANS_OFFSET + 0x1D0)
> +#define SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK 0xffff
> +
> +#define MTK_DP_TRANS_P0_35F0 (TRANS_OFFSET + 0x1F0)
> +
> +#define MTK_DP_AUX_P0_360C (AUX_OFFSET + 0x00C)
> +#define AUX_TIMEOUT_THR_AUX_TX_P0_MASK 0x1fff
> +
> +#define MTK_DP_AUX_P0_3614 (AUX_OFFSET + 0x014)
> +#define AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK 0x7f
> +#define AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT 0
> +
> +#define MTK_DP_AUX_P0_3618 (AUX_OFFSET + 0x018)
> +#define AUX_RX_FIFO_FULL_AUX_TX_P0_MASK 0x200
> +#define AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK 0xf
> +
> +#define MTK_DP_AUX_P0_3620 (AUX_OFFSET + 0x020)
> +#define AUX_RD_MODE_AUX_TX_P0_MASK 0x200
> +#define AUX_RX_FIFO_READ_PULSE_TX_P0_MASK 0x100
> +#define AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT 8
> +#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK 0xff
> +#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT 0
> +
> +#define MTK_DP_AUX_P0_3624 (AUX_OFFSET + 0x024)
> +#define AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK 0xf
> +
> +#define MTK_DP_AUX_P0_3628 (AUX_OFFSET + 0x028)
> +#define AUX_RX_PHY_STATE_AUX_TX_P0_MASK 0x3ff
> +#define AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT 0
> +#define AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE \
> + (BIT(0) << AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT)
> +
> +#define MTK_DP_AUX_P0_362C (AUX_OFFSET + 0x02C)
> +#define AUX_NO_LENGTH_AUX_TX_P0_MASK 0x1
> +#define AUX_NO_LENGTH_AUX_TX_P0_SHIFT 0
> +#define AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK 0x2
> +#define AUX_RESERVED_RW_0_AUX_TX_P0_MASK 0xfffc
> +
> +#define MTK_DP_AUX_P0_3630 (AUX_OFFSET + 0x030)
> +#define AUX_TX_REQUEST_READY_AUX_TX_P0_MASK 0x8
> +#define AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT 3
> +
> +#define MTK_DP_AUX_P0_3634 (AUX_OFFSET + 0x034)
> +#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK 0xff00
> +#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT 8
> +
> +#define MTK_DP_AUX_P0_3640 (AUX_OFFSET + 0x040)
> +#define AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK 0x40
> +#define AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 6
> +#define AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 5
> +#define AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 4
> +#define AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT 3
> +#define AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT 2
> +#define AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT 1
> +#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK 0x1
> +#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT 0
> +
> +#define MTK_DP_AUX_P0_3644 (AUX_OFFSET + 0x044)
> +#define MCU_REQUEST_COMMAND_AUX_TX_P0_MASK 0xf
> +
> +#define MTK_DP_AUX_P0_3648 (AUX_OFFSET + 0x048)
> +#define MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK 0xffff
> +
> +#define MTK_DP_AUX_P0_364C (AUX_OFFSET + 0x04C)
> +#define MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK 0xf
> +
> +#define MTK_DP_AUX_P0_3650 (AUX_OFFSET + 0x050)
> +#define MCU_REQ_DATA_NUM_AUX_TX_P0_MASK 0xf000
> +#define MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT 12
> +#define PHY_FIFO_RST_AUX_TX_P0_MASK 0x200
> +#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK 0x100
> +#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT 8
> +
> +#define MTK_DP_AUX_P0_3658 (AUX_OFFSET + 0x058)
> +#define AUX_TX_OV_EN_AUX_TX_P0_MASK 0x1
> +
> +#define MTK_DP_AUX_P0_3690 (AUX_OFFSET + 0x090)
> +#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK 0x100
> +#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT 8
> +
> +#define MTK_DP_AUX_P0_3704 (AUX_OFFSET + 0x104)
> +#define AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK 0x2
> +#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK 0x4
> +#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT 2
> +
> +#define MTK_DP_AUX_P0_3708 (AUX_OFFSET + 0x108)
> +
> +#define MTK_DP_AUX_P0_37C8 (AUX_OFFSET + 0x1C8)
> +#define MTK_ATOP_EN_AUX_TX_P0_MASK 0x1
> +#define MTK_ATOP_EN_AUX_TX_P0_SHIFT 0
> +
> +#define MTK_DP_TOP_PWR_STATE (TOP_OFFSET + 0x00)
> +#define DP_PWR_STATE_MASK 0x3
> +#define DP_PWR_STATE_BANDGAP 1
> +#define DP_PWR_STATE_BANDGAP_TPLL 2
> +#define DP_PWR_STATE_BANDGAP_TPLL_LANE 3
> +
> +#define MTK_DP_TOP_SWING_EMP (TOP_OFFSET + 0x04)
> +#define DP_TX0_VOLT_SWING_MASK 0x3
> +#define DP_TX0_VOLT_SWING_SHIFT 0
> +#define DP_TX0_PRE_EMPH_MASK 0xc
> +#define DP_TX0_PRE_EMPH_SHIFT 2
> +#define DP_TX1_VOLT_SWING_MASK 0x300
> +#define DP_TX1_VOLT_SWING_SHIFT 8
> +#define DP_TX1_PRE_EMPH_MASK 0xc00
> +#define DP_TX2_VOLT_SWING_MASK 0x30000
> +#define DP_TX2_PRE_EMPH_MASK 0xc0000
> +#define DP_TX3_VOLT_SWING_MASK 0x3000000
> +#define DP_TX3_PRE_EMPH_MASK 0xc000000
> +
> +#define MTK_DP_TOP_RESET_AND_PROBE (TOP_OFFSET + 0x20)
> +#define SW_RST_B_SHIFT 0
> +#define SW_RST_B_PHYD (BIT(4) << SW_RST_B_SHIFT)
> +
> +#define MTK_DP_TOP_IRQ_STATUS (TOP_OFFSET + 0x28)
> +#define RGS_IRQ_STATUS_SHIFT 0
> +#define RGS_IRQ_STATUS_TRANSMITTER (BIT(1) << RGS_IRQ_STATUS_SHIFT)
> +
> +#define MTK_DP_TOP_IRQ_MASK (TOP_OFFSET + 0x2C)
> +#define IRQ_MASK_AUX_TOP_IRQ BIT(2)
> +
> +#define MTK_DP_TOP_MEM_PD (TOP_OFFSET + 0x38)
> +#define MEM_ISO_EN_SHIFT 0
> +#define FUSE_SEL_SHIFT 2
> +
> +#endif /*_MTK_DP_REG_H_*/
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 384074f69111b..e6e88e3cd811d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -63,6 +63,14 @@ enum mtk_dpi_out_color_format {
> MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
> };
>
> +enum TVDPLL_CLK {
> + TVDPLL_PLL = 0,
> + TVDPLL_D2 = 2,
> + TVDPLL_D4 = 4,
> + TVDPLL_D8 = 8,
> + TVDPLL_D16 = 16,
> +};
> +
> struct mtk_dpi {
> struct drm_encoder encoder;
> struct drm_bridge bridge;
> @@ -71,8 +79,10 @@ struct mtk_dpi {
> void __iomem *regs;
> struct device *dev;
> struct clk *engine_clk;
> + struct clk *dpi_ck_cg;
> struct clk *pixel_clk;
> struct clk *tvd_clk;
> + struct clk *pclk_src[5];
> int irq;
> struct drm_display_mode mode;
> const struct mtk_dpi_conf *conf;
> @@ -135,6 +145,7 @@ struct mtk_dpi_conf {
> u32 hvsize_mask;
> u32 channel_swap_shift;
> u32 yuv422_en_bit;
> + u32 csc_enable_bit;
> const struct mtk_dpi_yc_limit *limit;
> };
>
> @@ -365,7 +376,7 @@ static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
>
> static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
> {
> - mtk_dpi_mask(dpi, DPI_CON, enable ? CSC_ENABLE : 0, CSC_ENABLE);
> + mtk_dpi_mask(dpi, DPI_CON, enable ? dpi->conf->csc_enable_bit : 0, dpi->conf->csc_enable_bit);
> }
>
> static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
> @@ -384,22 +395,45 @@ static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)
> mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);
> }
>
> +static void mtk_dpi_matrix_sel(struct mtk_dpi *dpi, enum mtk_dpi_out_color_format format)
> +{
> + u32 matrix_sel = 0;
> +
> + switch (format) {
> + case MTK_DPI_COLOR_FORMAT_YCBCR_422:
> + case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL:
> + case MTK_DPI_COLOR_FORMAT_YCBCR_444:
> + case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL:
> + case MTK_DPI_COLOR_FORMAT_XV_YCC:
> + if (dpi->mode.hdisplay <= 720)
> + matrix_sel = 0x2;
> + break;
> + default:
> + break;
> + }
> + mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel, INT_MATRIX_SEL_MASK);
> +}
> +
> static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
> enum mtk_dpi_out_color_format format)
> {
> if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
> (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
> mtk_dpi_config_yuv422_enable(dpi, false);
> - if (dpi->conf->csc_support)
> + if (dpi->conf->csc_support) {
> mtk_dpi_config_csc_enable(dpi, true);
> + mtk_dpi_matrix_sel(dpi, format);
> + }
> if (dpi->conf->swap_input_support)
> mtk_dpi_config_swap_input(dpi, false);
> mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
> } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
> (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
> mtk_dpi_config_yuv422_enable(dpi, true);
> - if (dpi->conf->csc_support)
> + if (dpi->conf->csc_support) {
> mtk_dpi_config_csc_enable(dpi, true);
> + mtk_dpi_matrix_sel(dpi, format);
> + }
> if (dpi->conf->swap_input_support)
> mtk_dpi_config_swap_input(dpi, true);
> mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> @@ -441,6 +475,8 @@ static void mtk_dpi_power_off(struct mtk_dpi *dpi)
> mtk_dpi_disable(dpi);
> clk_disable_unprepare(dpi->pixel_clk);
> clk_disable_unprepare(dpi->engine_clk);
> + clk_disable_unprepare(dpi->dpi_ck_cg);
> + clk_disable_unprepare(dpi->tvd_clk);
> }
>
> static int mtk_dpi_power_on(struct mtk_dpi *dpi)
> @@ -450,12 +486,24 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi)
> if (++dpi->refcount != 1)
> return 0;
>
> + ret = clk_prepare_enable(dpi->tvd_clk);
> + if (ret) {
> + dev_err(dpi->dev, "Failed to enable tvd pll: %d\n", ret);
> + goto err_pixel;
> + }
> +
> ret = clk_prepare_enable(dpi->engine_clk);
> if (ret) {
> dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
> goto err_refcount;
> }
>
> + ret = clk_prepare_enable(dpi->dpi_ck_cg);
> + if (ret) {
> + dev_err(dpi->dev, "Failed to enable dpi_ck_cg clock: %d\n", ret);
> + goto err_ck_cg;
> + }
> +
> ret = clk_prepare_enable(dpi->pixel_clk);
> if (ret) {
> dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
> @@ -465,10 +513,11 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi)
> if (dpi->pinctrl && dpi->pins_dpi)
> pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
>
> - mtk_dpi_enable(dpi);
> return 0;
>
> err_pixel:
> + clk_disable_unprepare(dpi->dpi_ck_cg);
> +err_ck_cg:
> clk_disable_unprepare(dpi->engine_clk);
> err_refcount:
> dpi->refcount--;
> @@ -500,9 +549,16 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> pll_rate = clk_get_rate(dpi->tvd_clk);
>
> vm.pixelclock = pll_rate / factor;
> - if (dpi->conf->is_dpintf)
> - clk_set_rate(dpi->pixel_clk, vm.pixelclock / 4);
> - else if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
> + if (dpi->conf->is_dpintf) {
> + if (factor == 1)
> + clk_set_parent(dpi->pixel_clk, dpi->pclk_src[2]);
> + else if (factor == 2)
> + clk_set_parent(dpi->pixel_clk, dpi->pclk_src[3]);
> + else if (factor == 4)
> + clk_set_parent(dpi->pixel_clk, dpi->pclk_src[4]);
> + else
> + clk_set_parent(dpi->pixel_clk, dpi->pclk_src[2]);
> + } else if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
> (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))
> clk_set_rate(dpi->pixel_clk, vm.pixelclock * 2);
> else
> @@ -581,6 +637,8 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
> }
> mtk_dpi_sw_reset(dpi, false);
>
> + mtk_dpi_enable(dpi);
> +
> return 0;
> }
>
> @@ -623,7 +681,6 @@ static u32 *mtk_dpi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
> u32 *input_fmts;
>
> *num_input_fmts = 0;
> -
> input_fmts = kcalloc(1, sizeof(*input_fmts),
> GFP_KERNEL);
> if (!input_fmts)
> @@ -649,7 +706,7 @@ static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge,
> if (dpi->conf->num_output_fmts)
> out_bus_format = dpi->conf->output_fmts[0];
>
> - dev_dbg(dpi->dev, "input format 0x%04x, output format 0x%04x\n",
> + dev_info(dpi->dev, "input format 0x%04x, output format 0x%04x\n",
> bridge_state->input_bus_cfg.format,
> bridge_state->output_bus_cfg.format);
>
> @@ -657,7 +714,10 @@ static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge,
> dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
> dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
> dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
> - dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
> + if (out_bus_format == MEDIA_BUS_FMT_YUYV8_1X16)
> + dpi->color_format = MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL;
> + else
> + dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
>
> return 0;
> }
> @@ -835,6 +895,12 @@ static const u32 mt8183_output_fmts[] = {
> MEDIA_BUS_FMT_RGB888_2X12_BE,
> };
>
> +static const u32 mt8195_output_fmts[] = {
> + MEDIA_BUS_FMT_RGB888_1X24,
> + MEDIA_BUS_FMT_YUV8_1X24,
> + MEDIA_BUS_FMT_YUYV8_1X16,
> +};
> +
> static const struct mtk_dpi_yc_limit mtk_dpi_limit = {
> .c_bottom = 0x0010,
> .c_top = 0x0FE0,
> @@ -862,6 +928,7 @@ static const struct mtk_dpi_conf mt8173_conf = {
> .hvsize_mask = HSIZE_MASK,
> .channel_swap_shift = CH_SWAP,
> .yuv422_en_bit = YUV422_EN,
> + .csc_enable_bit = CSC_ENABLE,
> .limit = &mtk_dpi_limit,
> };
>
> @@ -879,6 +946,7 @@ static const struct mtk_dpi_conf mt2701_conf = {
> .hvsize_mask = HSIZE_MASK,
> .channel_swap_shift = CH_SWAP,
> .yuv422_en_bit = YUV422_EN,
> + .csc_enable_bit = CSC_ENABLE,
> .limit = &mtk_dpi_limit,
> };
>
> @@ -895,6 +963,7 @@ static const struct mtk_dpi_conf mt8183_conf = {
> .hvsize_mask = HSIZE_MASK,
> .channel_swap_shift = CH_SWAP,
> .yuv422_en_bit = YUV422_EN,
> + .csc_enable_bit = CSC_ENABLE,
> .limit = &mtk_dpi_limit,
> };
>
> @@ -911,18 +980,21 @@ static const struct mtk_dpi_conf mt8192_conf = {
> .hvsize_mask = HSIZE_MASK,
> .channel_swap_shift = CH_SWAP,
> .yuv422_en_bit = YUV422_EN,
> + .csc_enable_bit = CSC_ENABLE,
> .limit = &mtk_dpi_limit,
> };
>
> static const struct mtk_dpi_conf mt8195_dpintf_conf = {
> .cal_factor = mt8195_dpintf_calculate_factor,
> - .output_fmts = mt8173_output_fmts,
> - .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> + .output_fmts = mt8195_output_fmts,
> + .num_output_fmts = ARRAY_SIZE(mt8195_output_fmts),
> .is_dpintf = true,
> + .csc_support = true,
> .dimension_mask = DPINTF_HPW_MASK,
> .hvsize_mask = DPINTF_HSIZE_MASK,
> .channel_swap_shift = DPINTF_CH_SWAP,
> .yuv422_en_bit = DPINTF_YUV422_EN,
> + .csc_enable_bit = DPINTF_CSC_ENABLE,
> .limit = &mtk_dpintf_limit,
> };
>
> @@ -979,6 +1051,16 @@ static int mtk_dpi_probe(struct platform_device *pdev)
> return ret;
> }
>
> + dpi->dpi_ck_cg = devm_clk_get(dev, "ck_cg");
> + if (IS_ERR(dpi->dpi_ck_cg)) {
> + ret = PTR_ERR(dpi->dpi_ck_cg);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "Failed to get dpi ck cg clock: %d\n",
> + ret);
> +
> + return ret;
> + }
> +
> dpi->pixel_clk = devm_clk_get(dev, "pixel");
> if (IS_ERR(dpi->pixel_clk)) {
> ret = PTR_ERR(dpi->pixel_clk);
> @@ -997,6 +1079,11 @@ static int mtk_dpi_probe(struct platform_device *pdev)
> return ret;
> }
>
> + dpi->pclk_src[1] = devm_clk_get(dev, "TVDPLL_D2");
> + dpi->pclk_src[2] = devm_clk_get(dev, "TVDPLL_D4");
> + dpi->pclk_src[3] = devm_clk_get(dev, "TVDPLL_D8");
> + dpi->pclk_src[4] = devm_clk_get(dev, "TVDPLL_D16");
> +
> dpi->irq = platform_get_irq(pdev, 0);
> if (dpi->irq <= 0)
> return -EINVAL;
All those changes look unrelated as well?
Maxime
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