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Message-ID: <5421338B.3020302@rock-chips.com>
Date: Tue, 23 Sep 2014 16:47:07 +0800
From: cym <cym@...k-chips.com>
To: Rob Clark <robdclark@...il.com>, Mark yao <mark.yao@...k-chips.com>
CC: Heiko Stübner <heiko@...ech.de>,
Boris BREZILLON <boris.brezillon@...e-electrons.com>,
David Airlie <airlied@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Randy Dunlap <rdunlap@...radead.org>,
Grant Likely <grant.likely@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
John Stultz <john.stultz@...aro.org>,
Rom Lemarchand <romlem@...gle.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
linux-doc@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
linux-api@...r.kernel.org, linux-rockchip@...ts.infradead.org,
Douglas Anderson <dianders@...omium.org>,
Stéphane Marchesin <marcheu@...omium.org>,
dbehr@...omium.org, Olof Johansson <olof@...om.net>,
Daniel Kurtz <djkurtz@...omium.org>,
Jianqun Xu <xjq@...k-chips.com>, kfx@...k-chips.com,
Eddie Cai <cf@...k-chips.com>,
Chris Zhong <zyw@...k-chips.com>,
simon xue <xxm@...k-chips.com>,
Tao Huang <huangtao@...k-chips.com>,
Kever Yang <kever.yang@...k-chips.com>, yxj@...k-chips.com,
王晓腾 <wxt@...k-chips.com>, xw@...k-chips.com,
Jeff Chen <jeff.chen@...k-chips.com>
Subject: Re: [PATCH v4 5/5] drm/rockchip: Add support for Rockchip Soc EDP
On Tuesday, September 23, 2014 03:20 AM, Rob Clark wrote:
> On Mon, Sep 22, 2014 at 7:02 AM, Mark yao <mark.yao@...k-chips.com> wrote:
>> This adds support for Rockchip soc edp found on rk3288
>>
>> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
>> Signed-off-by: Jeff Chen <jeff.chen@...k-chips.com>
>> ---
>> Changes in v2:
>> - fix code sytle
>> - use some define from drm_dp_helper.h
>> - use panel-simple driver for primary display.
>> - remove unnecessary clock clk_24m_parent.
>>
>> Changes in v3: None
>>
>> Changes in v4: None
>>
>> drivers/gpu/drm/rockchip/Kconfig | 9 +
>> drivers/gpu/drm/rockchip/Makefile | 2 +
>> drivers/gpu/drm/rockchip/rockchip_edp_core.c | 853 ++++++++++++++++++
>> drivers/gpu/drm/rockchip/rockchip_edp_core.h | 309 +++++++
>> drivers/gpu/drm/rockchip/rockchip_edp_reg.c | 1202 ++++++++++++++++++++++++++
>> drivers/gpu/drm/rockchip/rockchip_edp_reg.h | 345 ++++++++
>> 6 files changed, 2720 insertions(+)
>> create mode 100644 drivers/gpu/drm/rockchip/rockchip_edp_core.c
>> create mode 100644 drivers/gpu/drm/rockchip/rockchip_edp_core.h
>> create mode 100644 drivers/gpu/drm/rockchip/rockchip_edp_reg.c
>> create mode 100644 drivers/gpu/drm/rockchip/rockchip_edp_reg.h
>>
>> diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
>> index 7146c80..04b1f8c 100644
>> --- a/drivers/gpu/drm/rockchip/Kconfig
>> +++ b/drivers/gpu/drm/rockchip/Kconfig
>> @@ -17,3 +17,12 @@ config DRM_ROCKCHIP
>> management to userspace. This driver does not provides
>> 2D or 3D acceleration; acceleration is performed by other
>> IP found on the SoC.
>> +
>> +config ROCKCHIP_EDP
>> + bool "Rockchip edp support"
>> + depends on DRM_ROCKCHIP
>> + help
>> + Choose this option if you have a Rockchip eDP.
>> + Rockchip rk3288 SoC has eDP TX Controller can be used.
>> + If you have an Embedded DisplayPort Panel, say Y to enable its
>> + driver.
>> diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile
>> index 6e6d468..a0fc3a1 100644
>> --- a/drivers/gpu/drm/rockchip/Makefile
>> +++ b/drivers/gpu/drm/rockchip/Makefile
>> @@ -7,4 +7,6 @@ ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/rockchip
>> rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \
>> rockchip_drm_gem.o rockchip_drm_vop.o
>>
>> +rockchipdrm-$(CONFIG_ROCKCHIP_EDP) += rockchip_edp_core.o rockchip_edp_reg.o
>> +
>> obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_edp_core.c b/drivers/gpu/drm/rockchip/rockchip_edp_core.c
>> new file mode 100644
>> index 0000000..5450d1fa
>> --- /dev/null
>> +++ b/drivers/gpu/drm/rockchip/rockchip_edp_core.c
>> @@ -0,0 +1,853 @@
>> +/*
>> +* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> +* Author:
>> +* Andy yan <andy.yan@...k-chips.com>
>> +* Jeff chen <jeff.chen@...k-chips.com>
>> +*
>> +* based on exynos_dp_core.c
>> +*
> hmm, did you look at all at drm_dp_helpers? The exynos code probably
> pre-dates the helpers, so might not be the best example to work off
> of..
>
> If there is actually a valid reason not to use the dp-helpers, then
> you should mention the reasons, at least in the commit msg if not the
> code
>
> BR,
> -R
Thanks Rob,Because RK3288 eDP controller IP design is similar to
exynos.They from same IP vendors but have some difference.
So we choosed exynos_dp as example to work off of.exynos_dp only used
some defines from drm_dp_helper.h like DPCD.
>
>> +* This program is free software; you can redistribute it and/or modify it
>> +* under the terms of the GNU General Public License as published by the
>> +* Free Software Foundation; either version 2 of the License, or (at your
>> +* option) any later version.
>> +*/
>> +
>> +#include <drm/drmP.h>
>> +#include <drm/drm_crtc_helper.h>
>> +#include <drm/drm_panel.h>
>> +#include <drm/drm_of.h>
>> +
>> +#include <linux/component.h>
>> +#include <linux/clk.h>
>> +#include <linux/mfd/syscon.h>
>> +#include <linux/regmap.h>
>> +#include <linux/reset.h>
>> +
>> +#include <video/of_videomode.h>
>> +#include <video/videomode.h>
>> +
>> +#include "rockchip_edp_core.h"
>> +
>> +#define connector_to_edp(c) \
>> + container_of(c, struct rockchip_edp_device, connector)
>> +
>> +#define encoder_to_edp(c) \
>> + container_of(c, struct rockchip_edp_device, encoder)
>> +
>> +static struct rockchip_edp_soc_data soc_data[2] = {
>> + /* rk3288 */
>> + {.grf_soc_con6 = 0x025c,
>> + .grf_soc_con12 = 0x0274},
>> + /* no edp switching needed */
>> + {.grf_soc_con6 = -1,
>> + .grf_soc_con12 = -1},
>> +};
>> +
>> +static const struct of_device_id rockchip_edp_dt_ids[] = {
>> + {.compatible = "rockchip,rk3288-edp",
>> + .data = (void *)&soc_data[0] },
>> + {}
>> +};
>> +
>> +MODULE_DEVICE_TABLE(of, rockchip_edp_dt_ids);
>> +
>> +static int rockchip_edp_clk_enable(struct rockchip_edp_device *edp)
>> +{
>> + int ret = 0;
>> +
>> + if (!edp->clk_on) {
>> + ret = clk_prepare_enable(edp->pclk);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot enable edp pclk %d\n", ret);
>> + goto err_pclk;
>> + }
>> +
>> + ret = clk_prepare_enable(edp->clk_edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot enable clk_edp %d\n", ret);
>> + goto err_clk_edp;
>> + }
>> +
>> + ret = clk_set_rate(edp->clk_24m, 24000000);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot set edp clk_24m %d\n",
>> + ret);
>> + goto err_clk_24m;
>> + }
>> +
>> + ret = clk_prepare_enable(edp->clk_24m);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot enable edp clk_24m %d\n",
>> + ret);
>> + goto err_clk_24m;
>> + }
>> +
>> + edp->clk_on = true;
>> + }
>> +
>> + return 0;
>> +
>> +err_clk_24m:
>> + clk_disable_unprepare(edp->clk_edp);
>> +err_clk_edp:
>> + clk_disable_unprepare(edp->pclk);
>> +err_pclk:
>> + edp->clk_on = false;
>> +
>> + return ret;
>> +}
>> +
>> +static int rockchip_edp_clk_disable(struct rockchip_edp_device *edp)
>> +{
>> + if (edp->clk_on) {
>> + clk_disable_unprepare(edp->pclk);
>> + clk_disable_unprepare(edp->clk_edp);
>> + clk_disable_unprepare(edp->clk_24m);
>> + edp->clk_on = false;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int rockchip_edp_pre_init(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> + int ret;
>> +
>> + val = GRF_EDP_REF_CLK_SEL_INTER | (GRF_EDP_REF_CLK_SEL_INTER << 16);
>> + ret = regmap_write(edp->grf, edp->soc_data->grf_soc_con12, val);
>> + if (ret != 0) {
>> + dev_err(edp->dev, "Could not write to GRF: %d\n", ret);
>> + return ret;
>> + }
>> +
>> + reset_control_assert(edp->rst);
>> + usleep_range(10, 20);
>> + reset_control_deassert(edp->rst);
>> +
>> + return 0;
>> +}
>> +
>> +static int rockchip_edp_init_edp(struct rockchip_edp_device *edp)
>> +{
>> + rockchip_edp_reset(edp);
>> + rockchip_edp_init_refclk(edp);
>> + rockchip_edp_init_interrupt(edp);
>> + rockchip_edp_enable_sw_function(edp);
>> + rockchip_edp_init_analog_func(edp);
>> + rockchip_edp_init_hpd(edp);
>> + rockchip_edp_init_aux(edp);
>> +
>> + return 0;
>> +}
>> +
>> +static int rockchip_edp_get_max_rx_bandwidth(
>> + struct rockchip_edp_device *edp,
>> + u8 *bandwidth)
>> +{
>> + u8 data;
>> + int retval;
>> +
>> + /*
>> + * For DP rev.1.1, Maximum link rate of Main Link lanes
>> + * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps
>> + */
>> + retval = rockchip_edp_read_byte_from_dpcd(
>> + edp, DP_MAX_LINK_RATE, &data);
>> + if (retval < 0)
>> + *bandwidth = 0;
>> + else
>> + *bandwidth = data;
>> +
>> + return retval;
>> +}
>> +
>> +static int rockchip_edp_get_max_rx_lane_count(struct rockchip_edp_device *edp,
>> + u8 *lane_count)
>> +{
>> + u8 data;
>> + int retval;
>> +
>> + /*
>> + * For DP rev.1.1, Maximum number of Main Link lanes
>> + * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes
>> + */
>> + retval = rockchip_edp_read_byte_from_dpcd(
>> + edp, DP_MAX_LANE_COUNT, &data);
>> + if (retval < 0)
>> + *lane_count = 0;
>> + else
>> + *lane_count = DPCD_MAX_LANE_COUNT(data);
>> +
>> + return retval;
>> +}
>> +
>> +static int rockchip_edp_init_training(struct rockchip_edp_device *edp)
>> +{
>> + int retval;
>> +
>> + /*
>> + * MACRO_RST must be applied after the PLL_LOCK to avoid
>> + * the DP inter pair skew issue for at least 10 us
>> + */
>> + rockchip_edp_reset_macro(edp);
>> +
>> + retval = rockchip_edp_get_max_rx_bandwidth(
>> + edp, &edp->link_train.link_rate);
>> + retval = rockchip_edp_get_max_rx_lane_count(
>> + edp, &edp->link_train.lane_count);
>> + dev_dbg(edp->dev, "max link rate:%d.%dGps max number of lanes:%d\n",
>> + edp->link_train.link_rate * 27 / 100,
>> + edp->link_train.link_rate * 27 % 100,
>> + edp->link_train.lane_count);
>> +
>> + if ((edp->link_train.link_rate != DP_LINK_BW_1_62) &&
>> + (edp->link_train.link_rate != DP_LINK_BW_2_7)) {
>> + dev_warn(edp->dev, "Rx Max Link Rate is abnormal :%x !\n"
>> + "use default link rate:%d.%dGps\n",
>> + edp->link_train.link_rate,
>> + edp->video_info.link_rate * 27 / 100,
>> + edp->video_info.link_rate * 27 % 100);
>> + edp->link_train.link_rate = edp->video_info.link_rate;
>> + }
>> +
>> + if (edp->link_train.lane_count == 0) {
>> + dev_err(edp->dev, "Rx Max Lane count is abnormal :%x !\n"
>> + "use default lanes:%d\n",
>> + edp->link_train.lane_count,
>> + edp->video_info.lane_count);
>> + edp->link_train.lane_count = edp->video_info.lane_count;
>> + }
>> +
>> + rockchip_edp_analog_power_ctr(edp, 1);
>> +
>> + return 0;
>> +}
>> +
>> +static int rockchip_edp_hw_link_training(struct rockchip_edp_device *edp)
>> +{
>> + u32 cnt = 50;
>> + u32 val;
>> +
>> + /* Set link rate and count as you want to establish*/
>> + rockchip_edp_set_link_bandwidth(edp, edp->link_train.link_rate);
>> + rockchip_edp_set_lane_count(edp, edp->link_train.lane_count);
>> + rockchip_edp_hw_link_training_en(edp);
>> + val = rockchip_edp_wait_hw_lt_done(edp);
>> + while (val) {
>> + if (cnt-- <= 0) {
>> + dev_err(edp->dev, "hw lt timeout");
>> + return -ETIMEDOUT;
>> + }
>> + mdelay(1);
>> + val = rockchip_edp_wait_hw_lt_done(edp);
>> + }
>> +
>> + val = rockchip_edp_get_hw_lt_status(edp);
>> + if (val)
>> + dev_err(edp->dev, "hw lt err:%d\n", val);
>> +
>> + return val;
>> +}
>> +
>> +static int rockchip_edp_set_link_train(struct rockchip_edp_device *edp)
>> +{
>> + int retval;
>> +
>> + rockchip_edp_init_training(edp);
>> +
>> + retval = rockchip_edp_hw_link_training(edp);
>> + if (retval < 0)
>> + dev_err(edp->dev, "DP hw LT failed!\n");
>> +
>> + return retval;
>> +}
>> +
>> +static int rockchip_edp_config_video(struct rockchip_edp_device *edp,
>> + struct video_info *video_info)
>> +{
>> + int retval = 0;
>> + int timeout_loop = 0;
>> + int done_count = 0;
>> +
>> + rockchip_edp_config_video_slave_mode(edp, video_info);
>> +
>> + rockchip_edp_set_video_color_format(edp, video_info->color_depth,
>> + video_info->color_space,
>> + video_info->dynamic_range,
>> + video_info->ycbcr_coeff);
>> +
>> + if (rockchip_edp_get_pll_lock_status(edp) == DP_PLL_UNLOCKED) {
>> + dev_err(edp->dev, "PLL is not locked yet.\n");
>> + return -EINVAL;
>> + }
>> +
>> + for (;;) {
>> + timeout_loop++;
>> + if (rockchip_edp_is_slave_video_stream_clock_on(edp) == 0)
>> + break;
>> +
>> + if (DP_TIMEOUT_LOOP_CNT < timeout_loop) {
>> + dev_err(edp->dev, "Timeout of video streamclk ok\n");
>> + return -ETIMEDOUT;
>> + }
>> +
>> + udelay(1);
>> + }
>> +
>> + /* Set to use the register calculated M/N video */
>> + rockchip_edp_set_video_cr_mn(edp, CALCULATED_M, 0, 0);
>> +
>> + /* Disable video mute */
>> + rockchip_edp_enable_video_mute(edp, 0);
>> +
>> + /* Configure video slave mode */
>> + rockchip_edp_enable_video_master(edp, 0);
>> +
>> + /* Enable video */
>> + rockchip_edp_start_video(edp);
>> +
>> + timeout_loop = 0;
>> +
>> + for (;;) {
>> + timeout_loop++;
>> + if (rockchip_edp_is_video_stream_on(edp) == 0) {
>> + done_count++;
>> + if (done_count > 10)
>> + break;
>> + } else if (done_count) {
>> + done_count = 0;
>> + }
>> + if (DP_TIMEOUT_LOOP_CNT < timeout_loop) {
>> + dev_err(edp->dev, "Timeout of video streamclk ok\n");
>> + return -ETIMEDOUT;
>> + }
>> +
>> + mdelay(1);
>> + }
>> +
>> + if (retval != 0)
>> + dev_err(edp->dev, "Video stream is not detected!\n");
>> +
>> + return retval;
>> +}
>> +
>> +static irqreturn_t rockchip_edp_isr(int irq, void *arg)
>> +{
>> + struct rockchip_edp_device *edp = arg;
>> + enum dp_irq_type irq_type;
>> +
>> + irq_type = rockchip_edp_get_irq_type(edp);
>> + switch (irq_type) {
>> + case DP_IRQ_TYPE_HP_CABLE_IN:
>> + dev_dbg(edp->dev, "Received irq - cable in\n");
>> + rockchip_edp_clear_hotplug_interrupts(edp);
>> + break;
>> + case DP_IRQ_TYPE_HP_CABLE_OUT:
>> + dev_dbg(edp->dev, "Received irq - cable out\n");
>> + rockchip_edp_clear_hotplug_interrupts(edp);
>> + break;
>> + case DP_IRQ_TYPE_HP_CHANGE:
>> + /*
>> + * We get these change notifications once in a while, but there
>> + * is nothing we can do with them. Just ignore it for now and
>> + * only handle cable changes.
>> + */
>> + dev_dbg(edp->dev, "Received irq - hotplug change; ignoring.\n");
>> + rockchip_edp_clear_hotplug_interrupts(edp);
>> + break;
>> + default:
>> + dev_err(edp->dev, "Received irq - unknown type[%x]!\n",
>> + irq_type);
>> + rockchip_edp_clear_hotplug_interrupts(edp);
>> + break;
>> + }
>> +
>> + return IRQ_HANDLED;
>> +}
>> +
>> +static void rockchip_edp_commit(struct drm_encoder *encoder)
>> +{
>> + struct rockchip_edp_device *edp = encoder_to_edp(encoder);
>> + int ret;
>> +
>> + ret = rockchip_edp_set_link_train(edp);
>> + if (ret)
>> + dev_err(edp->dev, "link train failed!\n");
>> + else
>> + dev_dbg(edp->dev, "link training success.\n");
>> +
>> + rockchip_edp_set_lane_count(edp, edp->link_train.lane_count);
>> + rockchip_edp_set_link_bandwidth(edp, edp->link_train.link_rate);
>> + rockchip_edp_init_video(edp);
>> +
>> + ret = rockchip_edp_config_video(edp, &edp->video_info);
>> + if (ret)
>> + dev_err(edp->dev, "unable to config video\n");
>> +}
>> +
>> +static void rockchip_edp_poweron(struct drm_encoder *encoder)
>> +{
>> + struct rockchip_edp_device *edp = encoder_to_edp(encoder);
>> + int ret;
>> +
>> + if (edp->dpms_mode == DRM_MODE_DPMS_ON)
>> + return;
>> +
>> + if (edp->panel)
>> + edp->panel->funcs->enable(edp->panel);
>> +
>> + ret = rockchip_edp_clk_enable(edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot enable edp clk %d\n", ret);
>> + return;
>> + }
>> +
>> + ret = rockchip_edp_pre_init(edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "edp pre init fail %d\n", ret);
>> + return;
>> + }
>> +
>> + ret = rockchip_edp_init_edp(edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "edp init fail %d\n", ret);
>> + return;
>> + }
>> +
>> + enable_irq(edp->irq);
>> + rockchip_edp_commit(encoder);
>> +}
>> +
>> +static void rockchip_edp_poweroff(struct drm_encoder *encoder)
>> +{
>> + struct rockchip_edp_device *edp = encoder_to_edp(encoder);
>> +
>> + if (edp->dpms_mode == DRM_MODE_DPMS_OFF)
>> + return;
>> +
>> + disable_irq(edp->irq);
>> + rockchip_edp_reset(edp);
>> + rockchip_edp_analog_power_ctr(edp, 0);
>> + rockchip_edp_clk_disable(edp);
>> + if (edp->panel)
>> + edp->panel->funcs->disable(edp->panel);
>> +}
>> +
>> +static enum drm_connector_status
>> +rockchip_connector_detect(struct drm_connector *connector, bool force)
>> +{
>> + return connector_status_connected;
>> +}
>> +
>> +static void rockchip_connector_destroy(struct drm_connector *connector)
>> +{
>> + drm_sysfs_connector_remove(connector);
>> + drm_connector_cleanup(connector);
>> +}
>> +
>> +static struct drm_connector_funcs rockchip_connector_funcs = {
>> + .dpms = drm_helper_connector_dpms,
>> + .detect = rockchip_connector_detect,
>> + .fill_modes = drm_helper_probe_single_connector_modes,
>> + .destroy = rockchip_connector_destroy,
>> +};
>> +
>> +static int rockchip_connector_get_modes(struct drm_connector *connector)
>> +{
>> + struct rockchip_edp_device *edp = connector_to_edp(connector);
>> + struct drm_panel *panel = edp->panel;
>> +
>> + return panel->funcs->get_modes(panel);
>> +}
>> +
>> +static struct drm_encoder *
>> + rockchip_connector_best_encoder(struct drm_connector *connector)
>> +{
>> + struct rockchip_edp_device *edp = connector_to_edp(connector);
>> +
>> + return &edp->encoder;
>> +}
>> +
>> +static enum drm_mode_status rockchip_connector_mode_valid(
>> + struct drm_connector *connector,
>> + struct drm_display_mode *mode)
>> +{
>> + /* TODO(rk): verify that the mode is really valid */
>> + return MODE_OK;
>> +}
>> +
>> +static struct drm_connector_helper_funcs rockchip_connector_helper_funcs = {
>> + .get_modes = rockchip_connector_get_modes,
>> + .mode_valid = rockchip_connector_mode_valid,
>> + .best_encoder = rockchip_connector_best_encoder,
>> +};
>> +
>> +static void rockchip_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
>> +{
>> + struct rockchip_edp_device *edp = encoder_to_edp(encoder);
>> +
>> + if (edp->dpms_mode == mode)
>> + return;
>> +
>> + switch (mode) {
>> + case DRM_MODE_DPMS_ON:
>> + rockchip_edp_poweron(encoder);
>> + break;
>> + case DRM_MODE_DPMS_STANDBY:
>> + case DRM_MODE_DPMS_SUSPEND:
>> + case DRM_MODE_DPMS_OFF:
>> + rockchip_edp_poweroff(encoder);
>> + break;
>> + default:
>> + break;
>> + }
>> +
>> + edp->dpms_mode = mode;
>> +}
>> +
>> +static bool
>> +rockchip_drm_encoder_mode_fixup(struct drm_encoder *encoder,
>> + const struct drm_display_mode *mode,
>> + struct drm_display_mode *adjusted_mode)
>> +{
>> + if (!adjusted_mode->private) {
>> + struct rockchip_display_mode *priv_mode;
>> +
>> + priv_mode = kzalloc(sizeof(*priv_mode), GFP_KERNEL);
>> + priv_mode->out_type = ROCKCHIP_DISPLAY_TYPE_EDP;
>> + adjusted_mode->private = (int *)priv_mode;
>> + }
>> +
>> + return true;
>> +}
>> +
>> +static void rockchip_drm_encoder_mode_set(struct drm_encoder *encoder,
>> + struct drm_display_mode *mode,
>> + struct drm_display_mode *adjusted)
>> +{
>> + struct rockchip_edp_device *edp = encoder_to_edp(encoder);
>> + u32 val;
>> + int ret;
>> +
>> + ret = rockchip_drm_encoder_get_mux_id(edp->dev->of_node, encoder);
>> + if (ret < 0)
>> + return;
>> +
>> + if (ret == ROCKCHIP_CRTC_VOPL)
>> + val = EDP_SEL_VOP_LIT | (EDP_SEL_VOP_LIT << 16);
>> + else
>> + val = EDP_SEL_VOP_LIT << 16;
>> +
>> + dev_info(edp->dev, "vop %s output to edp\n",
>> + (ret == ROCKCHIP_CRTC_VOPL) ? "LIT" : "BIG");
>> + ret = regmap_write(edp->grf, edp->soc_data->grf_soc_con6, val);
>> + if (ret != 0) {
>> + dev_err(edp->dev, "Could not write to GRF: %d\n", ret);
>> + return;
>> + }
>> +
>> + memcpy(&edp->mode, adjusted, sizeof(*mode));
>> +}
>> +
>> +static void rockchip_drm_encoder_prepare(struct drm_encoder *encoder)
>> +{
>> +}
>> +
>> +static void rockchip_drm_encoder_commit(struct drm_encoder *encoder)
>> +{
>> + rockchip_drm_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
>> +}
>> +
>> +static void rockchip_drm_encoder_disable(struct drm_encoder *encoder)
>> +{
>> + struct drm_plane *plane;
>> + struct drm_device *dev = encoder->dev;
>> +
>> + rockchip_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
>> +
>> + /* all planes connected to this encoder should be also disabled. */
>> + list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
>> + if (plane->crtc && (plane->crtc == encoder->crtc))
>> + plane->funcs->disable_plane(plane);
>> + }
>> +}
>> +
>> +static struct drm_encoder_helper_funcs rockchip_encoder_helper_funcs = {
>> + .dpms = rockchip_drm_encoder_dpms,
>> + .mode_fixup = rockchip_drm_encoder_mode_fixup,
>> + .mode_set = rockchip_drm_encoder_mode_set,
>> + .prepare = rockchip_drm_encoder_prepare,
>> + .commit = rockchip_drm_encoder_commit,
>> + .disable = rockchip_drm_encoder_disable,
>> +};
>> +
>> +static void rockchip_drm_encoder_destroy(struct drm_encoder *encoder)
>> +{
>> + drm_encoder_cleanup(encoder);
>> +}
>> +
>> +static struct drm_encoder_funcs rockchip_encoder_funcs = {
>> + .destroy = rockchip_drm_encoder_destroy,
>> +};
>> +
>> +static int rockchip_edp_init(struct rockchip_edp_device *edp)
>> +{
>> + struct device *dev = edp->dev;
>> + struct device_node *np = dev->of_node;
>> + struct platform_device *pdev = to_platform_device(dev);
>> + struct resource *res;
>> + const struct of_device_id *match;
>> + int ret;
>> +
>> + if (!np) {
>> + dev_err(dev, "Missing device tree node.\n");
>> + return -EINVAL;
>> + }
>> +
>> + match = of_match_node(rockchip_edp_dt_ids, np);
>> + edp->soc_data = (struct rockchip_edp_soc_data *)match->data;
>> + /*
>> + * The control bit is located in the GRF register space.
>> + */
>> + if (edp->soc_data->grf_soc_con6 >= 0) {
>> + edp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
>> + if (IS_ERR(edp->grf)) {
>> + dev_err(dev,
>> + "rk3288-edp needs rockchip,grf property\n");
>> + return PTR_ERR(edp->grf);
>> + }
>> + }
>> +
>> + edp->video_info.h_sync_polarity = 0;
>> + edp->video_info.v_sync_polarity = 0;
>> + edp->video_info.interlaced = 0;
>> + edp->video_info.color_space = CS_RGB;
>> + edp->video_info.dynamic_range = VESA;
>> + edp->video_info.ycbcr_coeff = COLOR_YCBCR601;
>> + edp->video_info.color_depth = COLOR_8;
>> +
>> + edp->video_info.link_rate = DP_LINK_BW_1_62;
>> + edp->video_info.lane_count = LANE_CNT4;
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + edp->regs = devm_ioremap_resource(dev, res);
>> + if (IS_ERR(edp->regs)) {
>> + dev_err(dev, "ioremap reg failed\n");
>> + return PTR_ERR(edp->regs);
>> + }
>> +
>> + edp->clk_edp = devm_clk_get(dev, "clk_edp");
>> + if (IS_ERR(edp->clk_edp)) {
>> + dev_err(dev, "cannot get clk_edp\n");
>> + return PTR_ERR(edp->clk_edp);
>> + }
>> +
>> + edp->clk_24m = devm_clk_get(dev, "clk_edp_24m");
>> + if (IS_ERR(edp->clk_24m)) {
>> + dev_err(dev, "cannot get clk_edp_24m\n");
>> + return PTR_ERR(edp->clk_24m);
>> + }
>> +
>> + edp->pclk = devm_clk_get(dev, "pclk_edp");
>> + if (IS_ERR(edp->pclk)) {
>> + dev_err(dev, "cannot get pclk\n");
>> + return PTR_ERR(edp->pclk);
>> + }
>> +
>> + edp->rst = devm_reset_control_get(dev, "edp");
>> + if (IS_ERR(edp->rst)) {
>> + dev_err(dev, "failed to get reset\n");
>> + return PTR_ERR(edp->rst);
>> + }
>> +
>> + ret = rockchip_edp_clk_enable(edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "cannot enable edp clk %d\n", ret);
>> + return ret;
>> + }
>> +
>> + ret = rockchip_edp_pre_init(edp);
>> + if (ret < 0) {
>> + dev_err(edp->dev, "failed to pre init %d\n", ret);
>> + return ret;
>> + }
>> +
>> + edp->irq = platform_get_irq(pdev, 0);
>> + if (edp->irq < 0) {
>> + dev_err(dev, "cannot find IRQ\n");
>> + return edp->irq;
>> + }
>> +
>> + ret = devm_request_irq(dev, edp->irq, rockchip_edp_isr, 0,
>> + dev_name(dev), edp);
>> + if (ret) {
>> + dev_err(dev, "cannot claim IRQ %d\n", edp->irq);
>> + return ret;
>> + }
>> +
>> + disable_irq_nosync(edp->irq);
>> +
>> + edp->dpms_mode = DRM_MODE_DPMS_OFF;
>> +
>> + dev_set_name(edp->dev, "rockchip-edp");
>> +
>> + return 0;
>> +}
>> +
>> +static int rockchip_edp_bind(struct device *dev, struct device *master,
>> + void *data)
>> +{
>> + struct rockchip_edp_device *edp = dev_get_drvdata(dev);
>> + struct drm_encoder *encoder;
>> + struct drm_connector *connector;
>> + struct drm_device *drm_dev = data;
>> + int ret;
>> +
>> + ret = rockchip_edp_init(edp);
>> + if (ret < 0)
>> + return ret;
>> +
>> + edp->drm_dev = drm_dev;
>> +
>> + encoder = &edp->encoder;
>> +
>> + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
>> + dev->of_node);
>> + DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
>> +
>> + ret = drm_encoder_init(drm_dev, encoder, &rockchip_encoder_funcs,
>> + DRM_MODE_ENCODER_LVDS);
>> + if (ret) {
>> + DRM_ERROR("failed to initialize encoder with drm\n");
>> + return ret;
>> + }
>> +
>> + drm_encoder_helper_add(encoder, &rockchip_encoder_helper_funcs);
>> +
>> + connector = &edp->connector;
>> + connector->polled = DRM_CONNECTOR_POLL_HPD;
>> + connector->dpms = DRM_MODE_DPMS_OFF;
>> +
>> + ret = drm_connector_init(drm_dev, connector,
>> + &rockchip_connector_funcs,
>> + DRM_MODE_CONNECTOR_eDP);
>> + if (ret) {
>> + DRM_ERROR("failed to initialize connector with drm\n");
>> + goto err_free_encoder;
>> + }
>> +
>> + drm_connector_helper_add(connector,
>> + &rockchip_connector_helper_funcs);
>> +
>> + ret = drm_sysfs_connector_add(connector);
>> + if (ret) {
>> + DRM_ERROR("failed to add drm_sysfs\n");
>> + goto err_free_connector;
>> + }
>> +
>> + ret = drm_mode_connector_attach_encoder(connector, encoder);
>> + if (ret) {
>> + DRM_ERROR("failed to attach connector and encoder\n");
>> + goto err_free_connector_sysfs;
>> + }
>> +
>> + ret = drm_panel_attach(edp->panel, connector);
>> + if (ret) {
>> + DRM_ERROR("failed to attach connector and encoder\n");
>> + goto err_free_connector_sysfs;
>> + }
>> +
>> + return 0;
>> +
>> +err_free_connector_sysfs:
>> + drm_sysfs_connector_remove(connector);
>> +err_free_connector:
>> + drm_connector_cleanup(connector);
>> +err_free_encoder:
>> + drm_encoder_cleanup(encoder);
>> + return ret;
>> +}
>> +
>> +static void rockchip_edp_unbind(struct device *dev, struct device *master,
>> + void *data)
>> +{
>> + struct rockchip_edp_device *edp = dev_get_drvdata(dev);
>> + struct drm_encoder *encoder;
>> +
>> + encoder = &edp->encoder;
>> +
>> + if (edp->panel)
>> + drm_panel_detach(edp->panel);
>> +
>> + rockchip_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
>> + encoder->funcs->destroy(encoder);
>> + drm_sysfs_connector_remove(&edp->connector);
>> + drm_connector_cleanup(&edp->connector);
>> + drm_encoder_cleanup(encoder);
>> +}
>> +
>> +static const struct component_ops rockchip_edp_component_ops = {
>> + .bind = rockchip_edp_bind,
>> + .unbind = rockchip_edp_unbind,
>> +};
>> +
>> +static int rockchip_edp_probe(struct platform_device *pdev)
>> +{
>> + struct device *dev = &pdev->dev;
>> + struct drm_panel *panel;
>> + struct device_node *panel_node;
>> + struct rockchip_edp_device *edp;
>> +
>> + if (!dev->of_node) {
>> + dev_err(dev, "can't find eDP devices\n");
>> + return -ENODEV;
>> + }
>> +
>> + panel_node = of_parse_phandle(dev->of_node, "rockchip,panel", 0);
>> + if (!panel_node) {
>> + DRM_ERROR("failed to find diaplay panel\n");
>> + return -ENODEV;
>> + }
>> +
>> + panel = of_drm_find_panel(panel_node);
>> + if (!panel) {
>> + DRM_ERROR("failed to find diaplay panel\n");
>> + of_node_put(panel_node);
>> + return -EPROBE_DEFER;
>> + }
>> +
>> + of_node_put(panel_node);
>> +
>> + edp = devm_kzalloc(dev, sizeof(*edp), GFP_KERNEL);
>> + if (!edp)
>> + return -ENOMEM;
>> + edp->dev = dev;
>> + edp->panel = panel;
>> + platform_set_drvdata(pdev, edp);
>> +
>> + return component_add(dev, &rockchip_edp_component_ops);
>> +}
>> +
>> +static int rockchip_edp_remove(struct platform_device *pdev)
>> +{
>> + component_del(&pdev->dev, &rockchip_edp_component_ops);
>> +
>> + return 0;
>> +}
>> +
>> +static struct platform_driver rockchip_edp_driver = {
>> + .probe = rockchip_edp_probe,
>> + .remove = rockchip_edp_remove,
>> + .driver = {
>> + .name = "rockchip-edp",
>> + .owner = THIS_MODULE,
>> + .of_match_table = of_match_ptr(rockchip_edp_dt_ids),
>> + },
>> +};
>> +
>> +module_platform_driver(rockchip_edp_driver);
>> +
>> +MODULE_AUTHOR("Jeff chen <jeff.chen@...k-chips.com>");
>> +MODULE_DESCRIPTION("ROCKCHIP EDP Driver");
>> +MODULE_LICENSE("GPL v2");
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_edp_core.h b/drivers/gpu/drm/rockchip/rockchip_edp_core.h
>> new file mode 100644
>> index 0000000..c13325f
>> --- /dev/null
>> +++ b/drivers/gpu/drm/rockchip/rockchip_edp_core.h
>> @@ -0,0 +1,309 @@
>> +/*
>> +* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> +* Author:
>> +* Andy yan <andy.yan@...k-chips.com>
>> +* Jeff chen <jeff.chen@...k-chips.com>
>> +*
>> +* based on exynos_dp_core.h
>> +*
>> +* This program is free software; you can redistribute it and/or modify it
>> +* under the terms of the GNU General Public License as published by the
>> +* Free Software Foundation; either version 2 of the License, or (at your
>> +* option) any later version.
>> +*/
>> +
>> +#ifndef _ROCKCHIP_EDP_CORE_H
>> +#define _ROCKCHIP_EDP_CORE_H
>> +
>> +#include <drm/drmP.h>
>> +#include <drm/drm_crtc_helper.h>
>> +#include <drm/drm_dp_helper.h>
>> +#include <drm/drm_panel.h>
>> +#include "rockchip_drm_drv.h"
>> +
>> +#define DP_TIMEOUT_LOOP_CNT 100
>> +#define MAX_CR_LOOP 5
>> +#define MAX_EQ_LOOP 5
>> +
>> +#define GRF_EDP_REF_CLK_SEL_INTER (1 << 4)
>> +#define GRF_EDP_HDCP_EN (1 << 15)
>> +#define GRF_EDP_BIST_EN (1 << 14)
>> +#define GRF_EDP_MEM_CTL_BY_EDP (1 << 13)
>> +#define GRF_EDP_SECURE_EN (1 << 3)
>> +#define EDP_SEL_VOP_LIT (1 << 5)
>> +
>> +enum link_lane_count_type {
>> + LANE_CNT1 = 1,
>> + LANE_CNT2 = 2,
>> + LANE_CNT4 = 4
>> +};
>> +
>> +enum link_training_state {
>> + LT_START,
>> + LT_CLK_RECOVERY,
>> + LT_EQ_TRAINING,
>> + FINISHED,
>> + FAILED
>> +};
>> +
>> +enum voltage_swing_level {
>> + VOLTAGE_LEVEL_0,
>> + VOLTAGE_LEVEL_1,
>> + VOLTAGE_LEVEL_2,
>> + VOLTAGE_LEVEL_3,
>> +};
>> +
>> +enum pre_emphasis_level {
>> + PRE_EMPHASIS_LEVEL_0,
>> + PRE_EMPHASIS_LEVEL_1,
>> + PRE_EMPHASIS_LEVEL_2,
>> + PRE_EMPHASIS_LEVEL_3,
>> +};
>> +
>> +enum pattern_set {
>> + PRBS7,
>> + D10_2,
>> + TRAINING_PTN1,
>> + TRAINING_PTN2,
>> + DP_NONE
>> +};
>> +
>> +enum color_space {
>> + CS_RGB,
>> + CS_YCBCR422,
>> + CS_YCBCR444
>> +};
>> +
>> +enum color_depth {
>> + COLOR_6,
>> + COLOR_8,
>> + COLOR_10,
>> + COLOR_12
>> +};
>> +
>> +enum color_coefficient {
>> + COLOR_YCBCR601,
>> + COLOR_YCBCR709
>> +};
>> +
>> +enum dynamic_range {
>> + VESA,
>> + CEA
>> +};
>> +
>> +enum pll_status {
>> + DP_PLL_UNLOCKED,
>> + DP_PLL_LOCKED
>> +};
>> +
>> +enum clock_recovery_m_value_type {
>> + CALCULATED_M,
>> + REGISTER_M
>> +};
>> +
>> +enum video_timing_recognition_type {
>> + VIDEO_TIMING_FROM_CAPTURE,
>> + VIDEO_TIMING_FROM_REGISTER
>> +};
>> +
>> +enum analog_power_block {
>> + AUX_BLOCK,
>> + CH0_BLOCK,
>> + CH1_BLOCK,
>> + CH2_BLOCK,
>> + CH3_BLOCK,
>> + ANALOG_TOTAL,
>> + POWER_ALL
>> +};
>> +
>> +enum dp_irq_type {
>> + DP_IRQ_TYPE_HP_CABLE_IN,
>> + DP_IRQ_TYPE_HP_CABLE_OUT,
>> + DP_IRQ_TYPE_HP_CHANGE,
>> + DP_IRQ_TYPE_UNKNOWN,
>> +};
>> +
>> +struct video_info {
>> + char *name;
>> +
>> + bool h_sync_polarity;
>> + bool v_sync_polarity;
>> + bool interlaced;
>> +
>> + enum color_space color_space;
>> + enum dynamic_range dynamic_range;
>> + enum color_coefficient ycbcr_coeff;
>> + enum color_depth color_depth;
>> +
>> + u8 link_rate;
>> + enum link_lane_count_type lane_count;
>> +};
>> +
>> +struct link_train {
>> + int eq_loop;
>> + int cr_loop[4];
>> +
>> + u8 link_rate;
>> + u8 lane_count;
>> + u8 training_lane[4];
>> +
>> + enum link_training_state lt_state;
>> +};
>> +
>> +/*
>> + * @grf_offset: offset inside the grf regmap for setting the rk3288 lvds
>> + */
>> +struct rockchip_edp_soc_data {
>> + int grf_soc_con6;
>> + int grf_soc_con12;
>> +};
>> +
>> +struct rockchip_edp_device {
>> + struct device *dev;
>> + struct drm_device *drm_dev;
>> + struct drm_panel *panel;
>> + struct drm_connector connector;
>> + struct drm_encoder encoder;
>> + struct drm_display_mode mode;
>> +
>> + struct rockchip_edp_soc_data *soc_data;
>> +
>> + void __iomem *regs;
>> + struct regmap *grf;
>> + unsigned int irq;
>> + struct clk *clk_edp;
>> + struct clk *clk_24m_parent;
>> + struct clk *clk_24m;
>> + struct clk *pclk;
>> + struct reset_control *rst;
>> + struct link_train link_train;
>> + struct video_info video_info;
>> + bool clk_on;
>> +
>> + int dpms_mode;
>> +};
>> +
>> +void rockchip_edp_enable_video_mute(struct rockchip_edp_device *edp,
>> + bool enable);
>> +void rockchip_edp_stop_video(struct rockchip_edp_device *edp);
>> +void rockchip_edp_lane_swap(struct rockchip_edp_device *edp, bool enable);
>> +void rockchip_edp_init_refclk(struct rockchip_edp_device *edp);
>> +void rockchip_edp_init_interrupt(struct rockchip_edp_device *edp);
>> +void rockchip_edp_reset(struct rockchip_edp_device *edp);
>> +void rockchip_edp_config_interrupt(struct rockchip_edp_device *edp);
>> +u32 rockchip_edp_get_pll_lock_status(struct rockchip_edp_device *edp);
>> +void rockchip_edp_analog_power_ctr(struct rockchip_edp_device *edp,
>> + bool enable);
>> +void rockchip_edp_init_analog_func(struct rockchip_edp_device *edp);
>> +void rockchip_edp_init_hpd(struct rockchip_edp_device *edp);
>> +void rockchip_edp_reset_aux(struct rockchip_edp_device *edp);
>> +void rockchip_edp_init_aux(struct rockchip_edp_device *edp);
>> +int rockchip_edp_get_plug_in_status(struct rockchip_edp_device *edp);
>> +void rockchip_edp_enable_sw_function(struct rockchip_edp_device *edp);
>> +int rockchip_edp_start_aux_transaction(struct rockchip_edp_device *edp);
>> +int rockchip_edp_write_byte_to_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int reg_addr,
>> + unsigned char data);
>> +int rockchip_edp_read_byte_from_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int reg_addr,
>> + unsigned char *data);
>> +int rockchip_edp_write_bytes_to_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int reg_addr,
>> + unsigned int count,
>> + unsigned char data[]);
>> +int rockchip_edp_read_bytes_from_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int reg_addr,
>> + unsigned int count,
>> + unsigned char data[]);
>> +int rockchip_edp_select_i2c_device(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int reg_addr);
>> +int rockchip_edp_read_byte_from_i2c(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int reg_addr,
>> + unsigned int *data);
>> +int rockchip_edp_read_bytes_from_i2c(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int reg_addr,
>> + unsigned int count,
>> + unsigned char edid[]);
>> +void rockchip_edp_set_link_bandwidth(struct rockchip_edp_device *edp,
>> + u32 bwtype);
>> +void rockchip_edp_get_link_bandwidth(struct rockchip_edp_device *edp,
>> + u32 *bwtype);
>> +void rockchip_edp_set_lane_count(struct rockchip_edp_device *edp,
>> + u32 count);
>> +void rockchip_edp_get_lane_count(struct rockchip_edp_device *edp,
>> + u32 *count);
>> +void rockchip_edp_enable_enhanced_mode(struct rockchip_edp_device *edp,
>> + bool enable);
>> +void rockchip_edp_set_training_pattern(struct rockchip_edp_device *edp,
>> + enum pattern_set pattern);
>> +void rockchip_edp_set_lane0_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level);
>> +void rockchip_edp_set_lane1_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level);
>> +void rockchip_edp_set_lane2_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level);
>> +void rockchip_edp_set_lane3_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level);
>> +void rockchip_edp_set_lane0_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane);
>> +void rockchip_edp_set_lane1_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane);
>> +void rockchip_edp_set_lane2_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane);
>> +void rockchip_edp_set_lane3_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane);
>> +u32 rockchip_edp_get_lane0_link_training(struct rockchip_edp_device *edp);
>> +u32 rockchip_edp_get_lane1_link_training(struct rockchip_edp_device *edp);
>> +u32 rockchip_edp_get_lane2_link_training(struct rockchip_edp_device *edp);
>> +u32 rockchip_edp_get_lane3_link_training(struct rockchip_edp_device *edp);
>> +void rockchip_edp_reset_macro(struct rockchip_edp_device *edp);
>> +int rockchip_edp_init_video(struct rockchip_edp_device *edp);
>> +
>> +void rockchip_edp_set_video_color_format(struct rockchip_edp_device *edp,
>> + u32 color_depth,
>> + u32 color_space,
>> + u32 dynamic_range,
>> + u32 coeff);
>> +int
>> +rockchip_edp_is_slave_video_stream_clock_on(struct rockchip_edp_device *edp);
>> +void rockchip_edp_set_video_cr_mn(struct rockchip_edp_device *edp,
>> + enum clock_recovery_m_value_type type,
>> + u32 m_value,
>> + u32 n_value);
>> +void rockchip_edp_set_video_timing_mode(struct rockchip_edp_device *edp,
>> + u32 type);
>> +void rockchip_edp_enable_video_master(struct rockchip_edp_device *edp,
>> + bool enable);
>> +void rockchip_edp_start_video(struct rockchip_edp_device *edp);
>> +int rockchip_edp_is_video_stream_on(struct rockchip_edp_device *edp);
>> +void rockchip_edp_config_video_slave_mode(struct rockchip_edp_device *edp,
>> + struct video_info *video_info);
>> +void rockchip_edp_enable_scrambling(struct rockchip_edp_device *edp);
>> +void rockchip_edp_disable_scrambling(struct rockchip_edp_device *edp);
>> +void rockchip_edp_hw_link_training_en(struct rockchip_edp_device *edp);
>> +int rockchip_edp_get_hw_lt_status(struct rockchip_edp_device *edp);
>> +int rockchip_edp_wait_hw_lt_done(struct rockchip_edp_device *edp);
>> +enum dp_irq_type rockchip_edp_get_irq_type(struct rockchip_edp_device *edp);
>> +void rockchip_edp_clear_hotplug_interrupts(struct rockchip_edp_device *edp);
>> +
>> +/* I2C EDID Chip ID, Slave Address */
>> +#define I2C_EDID_DEVICE_ADDR 0x50
>> +#define I2C_E_EDID_DEVICE_ADDR 0x30
>> +
>> +/* DPCD_ADDR_MAX_LANE_COUNT */
>> +#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
>> +#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
>> +
>> +/* DPCD_ADDR_LANE_COUNT_SET */
>> +#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f)
>> +
>> +/* DPCD_ADDR_TRAINING_LANE0_SET */
>> +#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3)
>> +#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3)
>> +#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
>> +#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
>> +
>> +#endif /* _ROCKCHIP_EDP_CORE_H */
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_edp_reg.c b/drivers/gpu/drm/rockchip/rockchip_edp_reg.c
>> new file mode 100644
>> index 0000000..f6d641c
>> --- /dev/null
>> +++ b/drivers/gpu/drm/rockchip/rockchip_edp_reg.c
>> @@ -0,0 +1,1202 @@
>> +/*
>> +* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> +* Author:
>> +* Andy yan <andy.yan@...k-chips.com>
>> +* Jeff chen <jeff.chen@...k-chips.com>
>> +*
>> +* based on exynos_dp_reg.c
>> +*
>> +* This program is free software; you can redistribute it and/or modify it
>> +* under the terms of the GNU General Public License as published by the
>> +* Free Software Foundation; either version 2 of the License, or (at your
>> +* option) any later version.
>> +*/
>> +
>> +#include <linux/device.h>
>> +#include <linux/delay.h>
>> +#include <linux/io.h>
>> +
>> +#include "rockchip_edp_core.h"
>> +#include "rockchip_edp_reg.h"
>> +
>> +void rockchip_edp_enable_video_mute(struct rockchip_edp_device *edp,
>> + bool enable)
>> +{
>> + u32 val;
>> +
>> + if (enable) {
>> + val = readl(edp->regs + VIDEO_CTL_1);
>> + val |= VIDEO_MUTE;
>> + writel(val, edp->regs + VIDEO_CTL_1);
>> + } else {
>> + val = readl(edp->regs + VIDEO_CTL_1);
>> + val &= ~VIDEO_MUTE;
>> + writel(val, edp->regs + VIDEO_CTL_1);
>> + }
>> +}
>> +
>> +void rockchip_edp_stop_video(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + VIDEO_CTL_1);
>> + val &= ~VIDEO_EN;
>> + writel(val, edp->regs + VIDEO_CTL_1);
>> +}
>> +
>> +void rockchip_edp_lane_swap(struct rockchip_edp_device *edp, bool enable)
>> +{
>> + u32 val;
>> +
>> + if (enable)
>> + val = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
>> + LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
>> + else
>> + val = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
>> + LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
>> +
>> + writel(val, edp->regs + LANE_MAP);
>> +}
>> +
>> +void rockchip_edp_init_refclk(struct rockchip_edp_device *edp)
>> +{
>> + writel(SEL_24M, edp->regs + ANALOG_CTL_2);
>> + writel(REF_CLK_24M, edp->regs + PLL_REG_1);
>> +
>> + writel(0x95, edp->regs + PLL_REG_2);
>> + writel(0x40, edp->regs + PLL_REG_3);
>> + writel(0x58, edp->regs + PLL_REG_4);
>> + writel(0x22, edp->regs + PLL_REG_5);
>> + writel(0x19, edp->regs + SSC_REG);
>> + writel(0x87, edp->regs + TX_REG_COMMON);
>> + writel(0x03, edp->regs + DP_AUX);
>> + writel(0x46, edp->regs + DP_BIAS);
>> + writel(0x55, edp->regs + DP_RESERVE2);
>> +}
>> +
>> +void rockchip_edp_init_interrupt(struct rockchip_edp_device *edp)
>> +{
>> + /* Set interrupt pin assertion polarity as high */
>> + writel(INT_POL, edp->regs + INT_CTL);
>> +
>> + /* Clear pending valisers */
>> + writel(0xff, edp->regs + COMMON_INT_STA_1);
>> + writel(0x4f, edp->regs + COMMON_INT_STA_2);
>> + writel(0xff, edp->regs + COMMON_INT_STA_3);
>> + writel(0x27, edp->regs + COMMON_INT_STA_4);
>> +
>> + writel(0x7f, edp->regs + DP_INT_STA);
>> +
>> + /* 0:mask,1: unmask */
>> + writel(0x00, edp->regs + COMMON_INT_MASK_1);
>> + writel(0x00, edp->regs + COMMON_INT_MASK_2);
>> + writel(0x00, edp->regs + COMMON_INT_MASK_3);
>> + writel(0x00, edp->regs + COMMON_INT_MASK_4);
>> + writel(0x00, edp->regs + DP_INT_STA_MASK);
>> +}
>> +
>> +void rockchip_edp_reset(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + rockchip_edp_stop_video(edp);
>> + rockchip_edp_enable_video_mute(edp, 0);
>> +
>> + val = VID_CAP_FUNC_EN_N | AUD_FIFO_FUNC_EN_N |
>> + AUD_FUNC_EN_N | HDCP_FUNC_EN_N | SW_FUNC_EN_N;
>> + writel(val, edp->regs + FUNC_EN_1);
>> +
>> + val = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
>> + SERDES_FIFO_FUNC_EN_N |
>> + LS_CLK_DOMAIN_FUNC_EN_N;
>> + writel(val, edp->regs + FUNC_EN_2);
>> +
>> + usleep_range(20, 30);
>> +
>> + rockchip_edp_lane_swap(edp, 0);
>> +
>> + writel(0x0, edp->regs + SYS_CTL_1);
>> + writel(0x40, edp->regs + SYS_CTL_2);
>> + writel(0x0, edp->regs + SYS_CTL_3);
>> + writel(0x0, edp->regs + SYS_CTL_4);
>> +
>> + writel(0x0, edp->regs + PKT_SEND_CTL);
>> + writel(0x0, edp->regs + HDCP_CTL);
>> +
>> + writel(0x5e, edp->regs + HPD_DEGLITCH_L);
>> + writel(0x1a, edp->regs + HPD_DEGLITCH_H);
>> +
>> + writel(0x10, edp->regs + LINK_DEBUG_CTL);
>> +
>> + writel(0x0, edp->regs + VIDEO_FIFO_THRD);
>> + writel(0x20, edp->regs + AUDIO_MARGIN);
>> +
>> + writel(0x4, edp->regs + M_VID_GEN_FILTER_TH);
>> + writel(0x2, edp->regs + M_AUD_GEN_FILTER_TH);
>> +
>> + writel(0x0, edp->regs + SOC_GENERAL_CTL);
>> +}
>> +
>> +void rockchip_edp_config_interrupt(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + /* 0: mask, 1: unmask */
>> + val = 0;
>> + writel(val, edp->regs + COMMON_INT_MASK_1);
>> +
>> + writel(val, edp->regs + COMMON_INT_MASK_2);
>> +
>> + writel(val, edp->regs + COMMON_INT_MASK_3);
>> +
>> + writel(val, edp->regs + COMMON_INT_MASK_4);
>> +
>> + writel(val, edp->regs + DP_INT_STA_MASK);
>> +}
>> +
>> +u32 rockchip_edp_get_pll_lock_status(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + DEBUG_CTL);
>> +
>> + return (val & PLL_LOCK) ? DP_PLL_LOCKED : DP_PLL_UNLOCKED;
>> +}
>> +
>> +void rockchip_edp_analog_power_ctr(struct rockchip_edp_device *edp,
>> + bool enable)
>> +{
>> + u32 val;
>> +
>> + if (enable) {
>> + val = PD_EXP_BG | PD_AUX | PD_PLL |
>> + PD_CH3 | PD_CH2 | PD_CH1 | PD_CH0;
>> + writel(val, edp->regs + DP_PWRDN);
>> + usleep_range(10, 20);
>> + writel(0x0, edp->regs + DP_PWRDN);
>> + } else {
>> + val = PD_EXP_BG | PD_AUX | PD_PLL |
>> + PD_CH3 | PD_CH2 | PD_CH1 | PD_CH0;
>> + writel(val, edp->regs + DP_PWRDN);
>> + }
>> +}
>> +
>> +void rockchip_edp_init_analog_func(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> + int wt = 0;
>> +
>> + rockchip_edp_analog_power_ctr(edp, 1);
>> +
>> + val = PLL_LOCK_CHG;
>> + writel(val, edp->regs + COMMON_INT_STA_1);
>> +
>> + val = readl(edp->regs + DEBUG_CTL);
>> + val &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
>> + writel(val, edp->regs + DEBUG_CTL);
>> +
>> + /* Power up PLL */
>> + while (wt < 100) {
>> + if (rockchip_edp_get_pll_lock_status(edp) == DP_PLL_LOCKED) {
>> + dev_dbg(edp->dev, "edp pll locked\n");
>> + break;
>> + }
>> + wt++;
>> + udelay(5);
>> + }
>> +
>> + /* Enable Serdes FIFO function and Link symbol clock domain module */
>> + val = readl(edp->regs + FUNC_EN_2);
>> + val &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
>> + | AUX_FUNC_EN_N | SSC_FUNC_EN_N);
>> + writel(val, edp->regs + FUNC_EN_2);
>> +}
>> +
>> +void rockchip_edp_init_hpd(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = HOTPLUG_CHG | HPD_LOST | PLUG;
>> + writel(val, edp->regs + COMMON_INT_STA_4);
>> +
>> + val = INT_HPD;
>> + writel(val, edp->regs + DP_INT_STA);
>> +
>> + val = readl(edp->regs + SYS_CTL_3);
>> + val |= (F_HPD | HPD_CTRL);
>> + writel(val, edp->regs + SYS_CTL_3);
>> +}
>> +
>> +void rockchip_edp_reset_aux(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + /* Disable AUX channel module */
>> + val = readl(edp->regs + FUNC_EN_2);
>> + val |= AUX_FUNC_EN_N;
>> + writel(val, edp->regs + FUNC_EN_2);
>> +}
>> +
>> +void rockchip_edp_init_aux(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + /* Clear inerrupts related to AUX channel */
>> + val = RPLY_RECEIV | AUX_ERR;
>> + writel(val, edp->regs + DP_INT_STA);
>> +
>> + rockchip_edp_reset_aux(edp);
>> +
>> + /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
>> + val = DEFER_CTRL_EN | DEFER_COUNT(1);
>> + writel(val, edp->regs + AUX_CH_DEFER_CTL);
>> +
>> + /* Enable AUX channel module */
>> + val = readl(edp->regs + FUNC_EN_2);
>> + val &= ~AUX_FUNC_EN_N;
>> + writel(val, edp->regs + FUNC_EN_2);
>> +}
>> +
>> +int rockchip_edp_get_plug_in_status(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + SYS_CTL_3);
>> + if (val & HPD_STATUS)
>> + return 0;
>> +
>> + return -EINVAL;
>> +}
>> +
>> +void rockchip_edp_enable_sw_function(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + FUNC_EN_1);
>> + val &= ~SW_FUNC_EN_N;
>> + writel(val, edp->regs + FUNC_EN_1);
>> +}
>> +
>> +int rockchip_edp_start_aux_transaction(struct rockchip_edp_device *edp)
>> +{
>> + int val;
>> + int retval = 0;
>> + int timeout_loop = 0;
>> + int aux_timeout = 0;
>> +
>> + /* Enable AUX CH operation */
>> + val = readl(edp->regs + AUX_CH_CTL_2);
>> + val |= AUX_EN;
>> + writel(val, edp->regs + AUX_CH_CTL_2);
>> +
>> + /* Is AUX CH operation enabled? */
>> + val = readl(edp->regs + AUX_CH_CTL_2);
>> + while (val & AUX_EN) {
>> + aux_timeout++;
>> + if ((DP_TIMEOUT_LOOP_CNT * 10) < aux_timeout) {
>> + dev_err(edp->dev, "AUX CH enable timeout!\n");
>> + return -ETIMEDOUT;
>> + }
>> + val = readl(edp->regs + AUX_CH_CTL_2);
>> + usleep_range(1000, 2000);
>> + }
>> +
>> + /* Is AUX CH command redply received? */
>> + val = readl(edp->regs + DP_INT_STA);
>> + while (!(val & RPLY_RECEIV)) {
>> + timeout_loop++;
>> + if (DP_TIMEOUT_LOOP_CNT < timeout_loop) {
>> + dev_err(edp->dev, "AUX CH command redply failed!\n");
>> + return -ETIMEDOUT;
>> + }
>> + val = readl(edp->regs + DP_INT_STA);
>> + usleep_range(10, 20);
>> + }
>> +
>> + /* Clear interrupt source for AUX CH command redply */
>> + writel(RPLY_RECEIV, edp->regs + DP_INT_STA);
>> +
>> + /* Clear interrupt source for AUX CH access error */
>> + val = readl(edp->regs + DP_INT_STA);
>> + if (val & AUX_ERR) {
>> + writel(AUX_ERR, edp->regs + DP_INT_STA);
>> + return -EREMOTEIO;
>> + }
>> +
>> + /* Check AUX CH error access status */
>> + val = readl(edp->regs + AUX_CH_STA);
>> + if ((val & AUX_STATUS_MASK) != 0) {
>> + dev_err(edp->dev, "AUX CH error happens: %d\n\n",
>> + val & AUX_STATUS_MASK);
>> + return -EREMOTEIO;
>> + }
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_write_byte_to_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int val_addr,
>> + unsigned char data)
>> +{
>> + u32 val;
>> + int i;
>> + int retval;
>> +
>> + for (i = 0; i < 3; i++) {
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + /* Select DPCD device address */
>> + val = AUX_ADDR_7_0(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_7_0);
>> + val = AUX_ADDR_15_8(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_15_8);
>> + val = AUX_ADDR_19_16(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_19_16);
>> +
>> + /* Write data buffer */
>> + val = (unsigned int)data;
>> + writel(val, edp->regs + BUF_DATA_0);
>> +
>> + /*
>> + * Set DisplayPort transaction and write 1 byte
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> + }
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_read_byte_from_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int val_addr,
>> + unsigned char *data)
>> +{
>> + u32 val;
>> + int i;
>> + int retval;
>> +
>> + for (i = 0; i < 10; i++) {
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + /* Select DPCD device address */
>> + val = AUX_ADDR_7_0(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_7_0);
>> + val = AUX_ADDR_15_8(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_15_8);
>> + val = AUX_ADDR_19_16(val_addr);
>> + writel(val, edp->regs + DP_AUX_ADDR_19_16);
>> +
>> + /*
>> + * Set DisplayPort transaction and read 1 byte
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> + }
>> +
>> + /* Read data buffer */
>> + val = readl(edp->regs + BUF_DATA_0);
>> + *data = (unsigned char)(val & 0xff);
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_write_bytes_to_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int val_addr,
>> + unsigned int count,
>> + unsigned char data[])
>> +{
>> + u32 val;
>> + unsigned int start_offset;
>> + unsigned int cur_data_count;
>> + unsigned int cur_data_idx;
>> + int i;
>> + int retval = 0;
>> +
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + start_offset = 0;
>> + while (start_offset < count) {
>> + /* Buffer size of AUX CH is 16 * 4bytes */
>> + if ((count - start_offset) > 16)
>> + cur_data_count = 16;
>> + else
>> + cur_data_count = count - start_offset;
>> +
>> + for (i = 0; i < 10; i++) {
>> + /* Select DPCD device address */
>> + val = AUX_ADDR_7_0(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_7_0);
>> + val = AUX_ADDR_15_8(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_15_8);
>> + val = AUX_ADDR_19_16(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_19_16);
>> +
>> + for (cur_data_idx = 0; cur_data_idx < cur_data_count;
>> + cur_data_idx++) {
>> + val = data[start_offset + cur_data_idx];
>> + writel(val, edp->regs + BUF_DATA_0
>> + + 4 * cur_data_idx);
>> + }
>> +
>> + /*
>> + * Set DisplayPort transaction and write
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_LENGTH(cur_data_count) |
>> + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> + }
>> +
>> + start_offset += cur_data_count;
>> + }
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_read_bytes_from_dpcd(struct rockchip_edp_device *edp,
>> + unsigned int val_addr,
>> + unsigned int count,
>> + unsigned char data[])
>> +{
>> + u32 val;
>> + unsigned int start_offset;
>> + unsigned int cur_data_count;
>> + unsigned int cur_data_idx;
>> + int i;
>> + int retval = 0;
>> +
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + start_offset = 0;
>> + while (start_offset < count) {
>> + /* Buffer size of AUX CH is 16 * 4bytes */
>> + if ((count - start_offset) > 16)
>> + cur_data_count = 16;
>> + else
>> + cur_data_count = count - start_offset;
>> +
>> + /* AUX CH Request Transaction process */
>> + for (i = 0; i < 10; i++) {
>> + /* Select DPCD device address */
>> + val = AUX_ADDR_7_0(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_7_0);
>> + val = AUX_ADDR_15_8(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_15_8);
>> + val = AUX_ADDR_19_16(val_addr + start_offset);
>> + writel(val, edp->regs + DP_AUX_ADDR_19_16);
>> +
>> + /*
>> + * Set DisplayPort transaction and read
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_LENGTH(cur_data_count) |
>> + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> + }
>> +
>> + for (cur_data_idx = 0; cur_data_idx < cur_data_count;
>> + cur_data_idx++) {
>> + val = readl(edp->regs + BUF_DATA_0
>> + + 4 * cur_data_idx);
>> + data[start_offset + cur_data_idx] =
>> + (unsigned char)val;
>> + }
>> +
>> + start_offset += cur_data_count;
>> + }
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_select_i2c_device(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int val_addr)
>> +{
>> + u32 val;
>> + int retval;
>> +
>> + /* Set EDID device address */
>> + val = device_addr;
>> + writel(val, edp->regs + DP_AUX_ADDR_7_0);
>> + writel(0x0, edp->regs + DP_AUX_ADDR_15_8);
>> + writel(0x0, edp->regs + DP_AUX_ADDR_19_16);
>> +
>> + /* Set offset from base address of EDID device */
>> + writel(val_addr, edp->regs + BUF_DATA_0);
>> +
>> + /*
>> + * Set I2C transaction and write address
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT |
>> + AUX_TX_COMM_WRITE;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval != 0)
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_read_byte_from_i2c(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int val_addr,
>> + unsigned int *data)
>> +{
>> + u32 val;
>> + int i;
>> + int retval;
>> +
>> + for (i = 0; i < 10; i++) {
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + /* Select EDID device */
>> + retval = rockchip_edp_select_i2c_device(edp,
>> + device_addr,
>> + val_addr);
>> + if (retval != 0) {
>> + dev_err(edp->dev, "Select EDID device fail!\n");
>> + continue;
>> + }
>> +
>> + /*
>> + * Set I2C transaction and read data
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_READ;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> + }
>> +
>> + /* Read data */
>> + if (retval == 0)
>> + *data = readl(edp->regs + BUF_DATA_0);
>> +
>> + return retval;
>> +}
>> +
>> +int rockchip_edp_read_bytes_from_i2c(struct rockchip_edp_device *edp,
>> + unsigned int device_addr,
>> + unsigned int val_addr,
>> + unsigned int count,
>> + unsigned char edid[])
>> +{
>> + u32 val;
>> + unsigned int i, j;
>> + unsigned int cur_data_idx;
>> + unsigned int defer = 0;
>> + int retval = 0;
>> +
>> + for (i = 0; i < count; i += 16) {
>> + for (j = 0; j < 100; j++) {
>> + /* Clear AUX CH data buffer */
>> + val = BUF_CLR;
>> + writel(val, edp->regs + BUFFER_DATA_CTL);
>> +
>> + /* Set normal AUX CH command */
>> + val = readl(edp->regs + AUX_CH_CTL_2);
>> + val &= ~ADDR_ONLY;
>> + writel(val, edp->regs + AUX_CH_CTL_2);
>> +
>> + /*
>> + * If Rx sends defer, Tx sends only reads
>> + * request without sending addres
>> + */
>> + if (!defer)
>> + retval = rockchip_edp_select_i2c_device(
>> + edp, device_addr, val_addr + i);
>> + else
>> + defer = 0;
>> +
>> + /*
>> + * Set I2C transaction and write data
>> + * If bit 3 is 1, DisplayPort transaction.
>> + * If Bit 3 is 0, I2C transaction.
>> + */
>> + val = AUX_LENGTH(16) | AUX_TX_COMM_I2C_TRANSACTION |
>> + AUX_TX_COMM_READ;
>> + writel(val, edp->regs + AUX_CH_CTL_1);
>> +
>> + /* Start AUX transaction */
>> + retval = rockchip_edp_start_aux_transaction(edp);
>> + if (retval == 0)
>> + break;
>> +
>> + dev_dbg(edp->dev, "Aux Transaction fail!\n");
>> +
>> + /* Check if Rx sends defer */
>> + val = readl(edp->regs + AUX_RX_COMM);
>> + if (val == AUX_RX_COMM_AUX_DEFER ||
>> + val == AUX_RX_COMM_I2C_DEFER) {
>> + dev_err(edp->dev, "Defer: %d\n\n", val);
>> + defer = 1;
>> + }
>> + }
>> +
>> + for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) {
>> + val = readl(edp->regs + BUF_DATA_0 + 4 * cur_data_idx);
>> + edid[i + cur_data_idx] = (unsigned char)val;
>> + }
>> + }
>> +
>> + return retval;
>> +}
>> +
>> +void rockchip_edp_set_link_bandwidth(struct rockchip_edp_device *edp,
>> + u32 bwtype)
>> +{
>> + u32 val;
>> +
>> + val = bwtype;
>> + if ((bwtype == DP_LINK_BW_2_7) || (bwtype == DP_LINK_BW_1_62))
>> + writel(val, edp->regs + LINK_BW_SET);
>> +}
>> +
>> +void rockchip_edp_get_link_bandwidth(struct rockchip_edp_device *edp,
>> + u32 *bwtype)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LINK_BW_SET);
>> + *bwtype = val;
>> +}
>> +
>> +void rockchip_edp_hw_link_training_en(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = HW_LT_EN;
>> + writel(val, edp->regs + HW_LT_CTL);
>> +}
>> +
>> +int rockchip_edp_wait_hw_lt_done(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + DP_INT_STA);
>> + if (val&HW_LT_DONE) {
>> + writel(val, edp->regs + DP_INT_STA);
>> + return 0;
>> + }
>> +
>> + return 1;
>> +}
>> +
>> +int rockchip_edp_get_hw_lt_status(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + HW_LT_CTL);
>> +
>> + return (val & HW_LT_ERR_CODE_MASK) >> 4;
>> +}
>> +
>> +void rockchip_edp_set_lane_count(struct rockchip_edp_device *edp, u32 count)
>> +{
>> + u32 val;
>> +
>> + val = count;
>> + writel(val, edp->regs + LANE_CNT_SET);
>> +}
>> +
>> +void rockchip_edp_get_lane_count(struct rockchip_edp_device *edp, u32 *count)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LANE_CNT_SET);
>> + *count = val;
>> +}
>> +
>> +void rockchip_edp_enable_enhanced_mode(struct rockchip_edp_device *edp,
>> + bool enable)
>> +{
>> + u32 val;
>> +
>> + if (enable) {
>> + val = readl(edp->regs + SYS_CTL_4);
>> + val |= ENHANCED;
>> + writel(val, edp->regs + SYS_CTL_4);
>> + } else {
>> + val = readl(edp->regs + SYS_CTL_4);
>> + val &= ~ENHANCED;
>> + writel(val, edp->regs + SYS_CTL_4);
>> + }
>> +}
>> +
>> +void rockchip_edp_set_training_pattern(struct rockchip_edp_device *edp,
>> + enum pattern_set pattern)
>> +{
>> + u32 val;
>> +
>> + switch (pattern) {
>> + case PRBS7:
>> + val = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> + break;
>> + case D10_2:
>> + val = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> + break;
>> + case TRAINING_PTN1:
>> + val = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> + break;
>> + case TRAINING_PTN2:
>> + val = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> + break;
>> + case DP_NONE:
>> + val = SCRAMBLING_ENABLE |
>> + LINK_QUAL_PATTERN_SET_DISABLE |
>> + SW_TRAINING_PATTERN_SET_DISABLE;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> + break;
>> + default:
>> + break;
>> + }
>> +}
>> +
>> +void rockchip_edp_set_lane0_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level)
>> +{
>> + u32 val;
>> +
>> + val = level << PRE_EMPHASIS_SET_SHIFT;
>> + writel(val, edp->regs + LN0_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane1_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level)
>> +{
>> + u32 val;
>> +
>> + val = level << PRE_EMPHASIS_SET_SHIFT;
>> + writel(val, edp->regs + LN1_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane2_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level)
>> +{
>> + u32 val;
>> +
>> + val = level << PRE_EMPHASIS_SET_SHIFT;
>> + writel(val, edp->regs + LN2_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane3_pre_emphasis(struct rockchip_edp_device *edp,
>> + u32 level)
>> +{
>> + u32 val;
>> +
>> + val = level << PRE_EMPHASIS_SET_SHIFT;
>> + writel(val, edp->regs + LN3_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane0_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane)
>> +{
>> + u32 val;
>> +
>> + val = training_lane;
>> + writel(val, edp->regs + LN0_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane1_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane)
>> +{
>> + u32 val;
>> +
>> + val = training_lane;
>> + writel(val, edp->regs + LN1_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane2_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane)
>> +{
>> + u32 val;
>> +
>> + val = training_lane;
>> + writel(val, edp->regs + LN2_LINK_TRAINING_CTL);
>> +}
>> +
>> +void rockchip_edp_set_lane3_link_training(struct rockchip_edp_device *edp,
>> + u32 training_lane)
>> +{
>> + u32 val;
>> +
>> + val = training_lane;
>> + writel(val, edp->regs + LN3_LINK_TRAINING_CTL);
>> +}
>> +
>> +u32 rockchip_edp_get_lane0_link_training(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LN0_LINK_TRAINING_CTL);
>> + return val;
>> +}
>> +
>> +u32 rockchip_edp_get_lane1_link_training(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LN1_LINK_TRAINING_CTL);
>> + return val;
>> +}
>> +
>> +u32 rockchip_edp_get_lane2_link_training(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LN2_LINK_TRAINING_CTL);
>> + return val;
>> +}
>> +
>> +u32 rockchip_edp_get_lane3_link_training(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + LN3_LINK_TRAINING_CTL);
>> + return val;
>> +}
>> +
>> +void rockchip_edp_reset_macro(struct rockchip_edp_device *edp)
>> +{
>> +}
>> +
>> +int rockchip_edp_init_video(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
>> + writel(val, edp->regs + COMMON_INT_STA_1);
>> +
>> + val = 0x0;
>> + writel(val, edp->regs + SYS_CTL_1);
>> +
>> + val = CHA_CRI(4) | CHA_CTRL;
>> + writel(val, edp->regs + SYS_CTL_2);
>> +
>> + val = VID_HRES_TH(2) | VID_VRES_TH(0);
>> + writel(val, edp->regs + VIDEO_CTL_8);
>> +
>> + return 0;
>> +}
>> +
>> +void rockchip_edp_set_video_color_format(struct rockchip_edp_device *edp,
>> + u32 color_dedpth,
>> + u32 color_space,
>> + u32 dynamic_range,
>> + u32 coeff)
>> +{
>> + u32 val;
>> +
>> + /* Configure the input color dedpth, color space, dynamic range */
>> + val = (dynamic_range << IN_D_RANGE_SHIFT) |
>> + (color_dedpth << IN_BPC_SHIFT) |
>> + (color_space << IN_COLOR_F_SHIFT);
>> + writel(val, edp->regs + VIDEO_CTL_2);
>> +
>> + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */
>> + val = readl(edp->regs + VIDEO_CTL_3);
>> + val &= ~IN_YC_COEFFI_MASK;
>> + if (coeff)
>> + val |= IN_YC_COEFFI_ITU709;
>> + else
>> + val |= IN_YC_COEFFI_ITU601;
>> + writel(val, edp->regs + VIDEO_CTL_3);
>> +}
>> +
>> +int rockchip_edp_is_slave_video_stream_clock_on(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + SYS_CTL_1);
>> + writel(val, edp->regs + SYS_CTL_1);
>> +
>> + val = readl(edp->regs + SYS_CTL_1);
>> +
>> + if (!(val & DET_STA)) {
>> + dev_dbg(edp->dev, "Input stream clock not detected.\n");
>> + return -EINVAL;
>> + }
>> +
>> + val = readl(edp->regs + SYS_CTL_2);
>> + writel(val, edp->regs + SYS_CTL_2);
>> +
>> + val = readl(edp->regs + SYS_CTL_2);
>> + if (val & CHA_STA) {
>> + dev_dbg(edp->dev, "Input stream clk is changing\n");
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +void rockchip_edp_set_video_cr_mn(struct rockchip_edp_device *edp,
>> + enum clock_recovery_m_value_type type,
>> + u32 m_value,
>> + u32 n_value)
>> +{
>> + u32 val;
>> +
>> + if (type == REGISTER_M) {
>> + val = readl(edp->regs + SYS_CTL_4);
>> + val |= FIX_M_VID;
>> + writel(val, edp->regs + SYS_CTL_4);
>> + val = m_value & 0xff;
>> + writel(val, edp->regs + M_VID_0);
>> + val = (m_value >> 8) & 0xff;
>> + writel(val, edp->regs + M_VID_1);
>> + val = (m_value >> 16) & 0xff;
>> + writel(val, edp->regs + M_VID_2);
>> +
>> + val = n_value & 0xff;
>> + writel(val, edp->regs + N_VID_0);
>> + val = (n_value >> 8) & 0xff;
>> + writel(val, edp->regs + N_VID_1);
>> + val = (n_value >> 16) & 0xff;
>> + writel(val, edp->regs + N_VID_2);
>> + } else {
>> + val = readl(edp->regs + SYS_CTL_4);
>> + val &= ~FIX_M_VID;
>> + writel(val, edp->regs + SYS_CTL_4);
>> +
>> + writel(0x00, edp->regs + N_VID_0);
>> + writel(0x80, edp->regs + N_VID_1);
>> + writel(0x00, edp->regs + N_VID_2);
>> + }
>> +}
>> +
>> +void rockchip_edp_set_video_timing_mode(struct rockchip_edp_device *edp,
>> + u32 type)
>> +{
>> + u32 val;
>> +
>> + if (type == VIDEO_TIMING_FROM_CAPTURE) {
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val &= ~F_SEL;
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> + } else {
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val |= F_SEL;
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> + }
>> +}
>> +
>> +int rockchip_edp_bist_cfg(struct rockchip_edp_device *edp)
>> +{
>> + struct video_info *video_info = &edp->video_info;
>> + struct drm_display_mode *mode = &edp->mode;
>> + u16 x_total, y_total, x_act;
>> + u32 val;
>> +
>> + x_total = mode->htotal;
>> + y_total = mode->vtotal;
>> + x_act = mode->hdisplay;
>> +
>> + rockchip_edp_set_video_cr_mn(edp, CALCULATED_M, 0, 0);
>> + rockchip_edp_set_video_color_format(edp, video_info->color_depth,
>> + video_info->color_space,
>> + video_info->dynamic_range,
>> + video_info->ycbcr_coeff);
>> +
>> + val = y_total & 0xff;
>> + writel(val, edp->regs + TOTAL_LINE_CFG_L);
>> + val = (y_total >> 8);
>> + writel(val, edp->regs + TOTAL_LINE_CFG_H);
>> + val = (mode->vdisplay & 0xff);
>> + writel(val, edp->regs + ATV_LINE_CFG_L);
>> + val = (mode->vdisplay >> 8);
>> + writel(val, edp->regs + ATV_LINE_CFG_H);
>> + val = (mode->vsync_start - mode->vdisplay);
>> + writel(val, edp->regs + VF_PORCH_REG);
>> + val = (mode->vsync_end - mode->vsync_start);
>> + writel(val, edp->regs + VSYNC_CFG_REG);
>> + val = (mode->vtotal - mode->vsync_end);
>> + writel(val, edp->regs + VB_PORCH_REG);
>> + val = x_total & 0xff;
>> + writel(val, edp->regs + TOTAL_PIXELL_REG);
>> + val = x_total >> 8;
>> + writel(val, edp->regs + TOTAL_PIXELH_REG);
>> + val = (x_act & 0xff);
>> + writel(val, edp->regs + ATV_PIXELL_REG);
>> + val = (x_act >> 8);
>> + writel(val, edp->regs + ATV_PIXELH_REG);
>> + val = (mode->hsync_start - mode->hdisplay) & 0xff;
>> + writel(val, edp->regs + HF_PORCHL_REG);
>> + val = (mode->hsync_start - mode->hdisplay) >> 8;
>> + writel(val, edp->regs + HF_PORCHH_REG);
>> + val = (mode->hsync_end - mode->hsync_start) & 0xff;
>> + writel(val, edp->regs + HSYNC_CFGL_REG);
>> + val = (mode->hsync_end - mode->hsync_start) >> 8;
>> + writel(val, edp->regs + HSYNC_CFGH_REG);
>> + val = (mode->htotal - mode->hsync_end) & 0xff;
>> + writel(val, edp->regs + HB_PORCHL_REG);
>> + val = (mode->htotal - mode->hsync_end) >> 8;
>> + writel(val, edp->regs + HB_PORCHH_REG);
>> +
>> + val = BIST_EN | BIST_WH_64 | BIST_TYPE_COLR_BAR;
>> + writel(val, edp->regs + VIDEO_CTL_4);
>> +
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val &= ~F_SEL;
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> + return 0;
>> +}
>> +
>> +void rockchip_edp_enable_video_master(struct rockchip_edp_device *edp,
>> + bool enable)
>> +{
>> +}
>> +
>> +void rockchip_edp_start_video(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + VIDEO_CTL_1);
>> + val |= VIDEO_EN;
>> + writel(val, edp->regs + VIDEO_CTL_1);
>> +}
>> +
>> +int rockchip_edp_is_video_stream_on(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + SYS_CTL_3);
>> + writel(val, edp->regs + SYS_CTL_3);
>> +
>> + val = readl(edp->regs + SYS_CTL_3);
>> + if (!(val & STRM_VALID)) {
>> + dev_dbg(edp->dev, "Input video stream is not detected.\n");
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +void rockchip_edp_config_video_slave_mode(struct rockchip_edp_device *edp,
>> + struct video_info *video_info)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + FUNC_EN_1);
>> + val &= ~(VID_FIFO_FUNC_EN_N | VID_CAP_FUNC_EN_N);
>> + writel(val, edp->regs + FUNC_EN_1);
>> +
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val &= ~INTERACE_SCAN_CFG;
>> + val |= (video_info->interlaced << 2);
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> +
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val &= ~VSYNC_POLARITY_CFG;
>> + val |= (video_info->v_sync_polarity << 1);
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> +
>> + val = readl(edp->regs + VIDEO_CTL_10);
>> + val &= ~HSYNC_POLARITY_CFG;
>> + val |= (video_info->h_sync_polarity << 0);
>> + writel(val, edp->regs + VIDEO_CTL_10);
>> +}
>> +
>> +void rockchip_edp_enable_scrambling(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + TRAINING_PTN_SET);
>> + val &= ~SCRAMBLING_DISABLE;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> +}
>> +
>> +void rockchip_edp_disable_scrambling(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = readl(edp->regs + TRAINING_PTN_SET);
>> + val |= SCRAMBLING_DISABLE;
>> + writel(val, edp->regs + TRAINING_PTN_SET);
>> +}
>> +
>> +enum dp_irq_type rockchip_edp_get_irq_type(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + /* Parse hotplug interrupt status register */
>> + val = readl(edp->regs + COMMON_INT_STA_4);
>> + if (val & PLUG)
>> + return DP_IRQ_TYPE_HP_CABLE_IN;
>> +
>> + if (val & HPD_LOST)
>> + return DP_IRQ_TYPE_HP_CABLE_OUT;
>> +
>> + if (val & HOTPLUG_CHG)
>> + return DP_IRQ_TYPE_HP_CHANGE;
>> +
>> + return DP_IRQ_TYPE_UNKNOWN;
>> +}
>> +
>> +void rockchip_edp_clear_hotplug_interrupts(struct rockchip_edp_device *edp)
>> +{
>> + u32 val;
>> +
>> + val = HOTPLUG_CHG | HPD_LOST | PLUG;
>> + writel(val, edp->regs + COMMON_INT_STA_4);
>> +
>> + val = INT_HPD;
>> + writel(val, edp->regs + DP_INT_STA);
>> +}
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_edp_reg.h b/drivers/gpu/drm/rockchip/rockchip_edp_reg.h
>> new file mode 100644
>> index 0000000..b50dd47
>> --- /dev/null
>> +++ b/drivers/gpu/drm/rockchip/rockchip_edp_reg.h
>> @@ -0,0 +1,345 @@
>> +/*
>> +* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
>> +* Author:
>> +* Andy yan <andy.yan@...k-chips.com>
>> +* Jeff chen <jeff.chen@...k-chips.com>
>> +*
>> +* based on exynos_dp_reg.h
>> +*
>> +* This program is free software; you can redistribute it and/or modify it
>> +* under the terms of the GNU General Public License as published by the
>> +* Free Software Foundation; either version 2 of the License, or (at your
>> +* option) any later version.
>> +*/
>> +
>> +#ifndef _ROCKCHIP_EDP_REG_H
>> +#define _ROCKCHIP_EDP_REG_H
>> +
>> +#include <linux/bitops.h>
>> +
>> +#define TX_SW_RST 0x14
>> +#define FUNC_EN_1 0x18
>> +#define FUNC_EN_2 0x1C
>> +#define VIDEO_CTL_1 0x20
>> +#define VIDEO_CTL_2 0x24
>> +#define VIDEO_CTL_3 0x28
>> +#define VIDEO_CTL_4 0x2c
>> +#define VIDEO_CTL_8 0x3C
>> +#define VIDEO_CTL_10 0x44
>> +#define TOTAL_LINE_CFG_L 0x48
>> +#define TOTAL_LINE_CFG_H 0x4c
>> +#define ATV_LINE_CFG_L 0x50
>> +#define ATV_LINE_CFG_H 0x54
>> +#define VF_PORCH_REG 0x58
>> +#define VSYNC_CFG_REG 0x5c
>> +#define VB_PORCH_REG 0x60
>> +#define TOTAL_PIXELL_REG 0x64
>> +#define TOTAL_PIXELH_REG 0x68
>> +#define ATV_PIXELL_REG 0x6c
>> +#define ATV_PIXELH_REG 0x70
>> +#define HF_PORCHL_REG 0x74
>> +#define HF_PORCHH_REG 0x78
>> +#define HSYNC_CFGL_REG 0x7c
>> +#define HSYNC_CFGH_REG 0x80
>> +#define HB_PORCHL_REG 0x84
>> +#define HB_PORCHH_REG 0x88
>> +#define PLL_REG_1 0xfc
>> +
>> +#define SSC_REG 0x104
>> +#define TX_REG_COMMON 0x114
>> +#define DP_AUX 0x120
>> +#define DP_BIAS 0x124
>> +#define DP_PWRDN 0x12c
>> +#define DP_RESERVE2 0x134
>> +
>> +#define LANE_MAP 0x35C
>> +#define ANALOG_CTL_2 0x374
>> +#define AUX_HW_RETRY_CTL 0x390
>> +#define COMMON_INT_STA_1 0x3C4
>> +#define COMMON_INT_STA_2 0x3C8
>> +#define COMMON_INT_STA_3 0x3CC
>> +#define COMMON_INT_STA_4 0x3D0
>> +#define DP_INT_STA 0x3DC
>> +#define COMMON_INT_MASK_1 0x3E0
>> +#define COMMON_INT_MASK_2 0x3E4
>> +#define COMMON_INT_MASK_3 0x3E8
>> +#define COMMON_INT_MASK_4 0x3EC
>> +#define DP_INT_STA_MASK 0x3F8
>> +
>> +#define SYS_CTL_1 0x600
>> +#define SYS_CTL_2 0x604
>> +#define SYS_CTL_3 0x608
>> +#define SYS_CTL_4 0x60C
>> +#define PKT_SEND_CTL 0x640
>> +#define HDCP_CTL 0x648
>> +#define LINK_BW_SET 0x680
>> +#define LANE_CNT_SET 0x684
>> +#define TRAINING_PTN_SET 0x688
>> +#define LN0_LINK_TRAINING_CTL 0x68C
>> +#define LN1_LINK_TRAINING_CTL 0x690
>> +#define LN2_LINK_TRAINING_CTL 0x694
>> +#define LN3_LINK_TRAINING_CTL 0x698
>> +#define HW_LT_CTL 0x6a0
>> +#define DEBUG_CTL 0x6C0
>> +#define HPD_DEGLITCH_L 0x6C4
>> +#define HPD_DEGLITCH_H 0x6C8
>> +#define LINK_DEBUG_CTL 0x6E0
>> +#define M_VID_0 0x700
>> +#define M_VID_1 0x704
>> +#define M_VID_2 0x708
>> +#define N_VID_0 0x70C
>> +#define N_VID_1 0x710
>> +#define N_VID_2 0x714
>> +#define VIDEO_FIFO_THRD 0x730
>> +#define AUDIO_MARGIN 0x73C
>> +#define M_VID_GEN_FILTER_TH 0x764
>> +#define M_AUD_GEN_FILTER_TH 0x778
>> +#define AUX_CH_STA 0x780
>> +#define AUX_CH_DEFER_CTL 0x788
>> +#define AUX_RX_COMM 0x78C
>> +#define BUFFER_DATA_CTL 0x790
>> +#define AUX_CH_CTL_1 0x794
>> +#define DP_AUX_ADDR_7_0 0x798
>> +#define DP_AUX_ADDR_15_8 0x79C
>> +#define DP_AUX_ADDR_19_16 0x7A0
>> +#define AUX_CH_CTL_2 0x7A4
>> +#define BUF_DATA_0 0x7C0
>> +#define SOC_GENERAL_CTL 0x800
>> +#define PLL_REG_2 0x9e4
>> +#define PLL_REG_3 0x9e8
>> +#define PLL_REG_4 0x9ec
>> +#define PLL_REG_5 0xa00
>> +
>> +/* ROCKCHIP_EDP_FUNC_EN_1 */
>> +#define VID_CAP_FUNC_EN_N BIT(6)
>> +#define VID_FIFO_FUNC_EN_N BIT(5)
>> +#define AUD_FIFO_FUNC_EN_N BIT(4)
>> +#define AUD_FUNC_EN_N BIT(3)
>> +#define HDCP_FUNC_EN_N BIT(2)
>> +#define SW_FUNC_EN_N BIT(0)
>> +
>> +/* ROCKCHIP_EDP_FUNC_EN_2 */
>> +#define SSC_FUNC_EN_N BIT(7)
>> +#define AUX_FUNC_EN_N BIT(2)
>> +#define SERDES_FIFO_FUNC_EN_N BIT(1)
>> +#define LS_CLK_DOMAIN_FUNC_EN_N BIT(0)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_1 */
>> +#define VIDEO_EN BIT(7)
>> +#define VIDEO_MUTE BIT(6)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_1 */
>> +#define IN_D_RANGE_MASK (0x1 << 7)
>> +#define IN_D_RANGE_SHIFT (7)
>> +#define IN_D_RANGE_CEA (0x1 << 7)
>> +#define IN_D_RANGE_VESA (0x0 << 7)
>> +#define IN_BPC_MASK (0x7 << 4)
>> +#define IN_BPC_SHIFT (4)
>> +#define IN_BPC_12_BITS (0x3 << 4)
>> +#define IN_BPC_10_BITS (0x2 << 4)
>> +#define IN_BPC_8_BITS (0x1 << 4)
>> +#define IN_BPC_6_BITS (0x0 << 4)
>> +#define IN_COLOR_F_MASK (0x3 << 0)
>> +#define IN_COLOR_F_SHIFT (0)
>> +#define IN_COLOR_F_YCBCR444 (0x2 << 0)
>> +#define IN_COLOR_F_YCBCR422 (0x1 << 0)
>> +#define IN_COLOR_F_RGB (0x0 << 0)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_3 */
>> +#define IN_YC_COEFFI_MASK (0x1 << 7)
>> +#define IN_YC_COEFFI_SHIFT (7)
>> +#define IN_YC_COEFFI_ITU709 (0x1 << 7)
>> +#define IN_YC_COEFFI_ITU601 (0x0 << 7)
>> +#define VID_CHK_UPDATE_TYPE_MASK (0x1 << 4)
>> +#define VID_CHK_UPDATE_TYPE_SHIFT (4)
>> +#define VID_CHK_UPDATE_TYPE_1 (0x1 << 4)
>> +#define VID_CHK_UPDATE_TYPE_0 (0x0 << 4)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_4 */
>> +#define BIST_EN (0x1 << 3)
>> +#define BIST_WH_64 (0x1 << 2)
>> +#define BIST_WH_32 (0x0 << 2)
>> +#define BIST_TYPE_COLR_BAR (0x0 << 0)
>> +#define BIST_TYPE_GRAY_BAR (0x1 << 0)
>> +#define BIST_TYPE_MOBILE_BAR (0x2 << 0)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_8 */
>> +#define VID_HRES_TH(x) (((x) & 0xf) << 4)
>> +#define VID_VRES_TH(x) (((x) & 0xf) << 0)
>> +
>> +/* ROCKCHIP_EDP_VIDEO_CTL_10 */
>> +#define F_SEL (0x1 << 4)
>> +#define INTERACE_SCAN_CFG (0x1 << 2)
>> +#define VSYNC_POLARITY_CFG (0x1 << 1)
>> +#define HSYNC_POLARITY_CFG (0x1 << 0)
>> +
>> +/* ROCKCHIP_EDP_PLL_REG_1 */
>> +#define REF_CLK_24M (0x1 << 1)
>> +#define REF_CLK_27M (0x0 << 1)
>> +
>> +/* ROCKCHIP_EDP_DP_PWRDN */
>> +#define PD_INC_BG BIT(7)
>> +#define PD_EXP_BG BIT(6)
>> +#define PD_AUX BIT(5)
>> +#define PD_PLL BIT(4)
>> +#define PD_CH3 BIT(3)
>> +#define PD_CH2 BIT(2)
>> +#define PD_CH1 BIT(1)
>> +#define PD_CH0 BIT(0)
>> +
>> +/* ROCKCHIP_EDP_LANE_MAP */
>> +#define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6)
>> +#define LANE3_MAP_LOGIC_LANE_1 (0x1 << 6)
>> +#define LANE3_MAP_LOGIC_LANE_2 (0x2 << 6)
>> +#define LANE3_MAP_LOGIC_LANE_3 (0x3 << 6)
>> +#define LANE2_MAP_LOGIC_LANE_0 (0x0 << 4)
>> +#define LANE2_MAP_LOGIC_LANE_1 (0x1 << 4)
>> +#define LANE2_MAP_LOGIC_LANE_2 (0x2 << 4)
>> +#define LANE2_MAP_LOGIC_LANE_3 (0x3 << 4)
>> +#define LANE1_MAP_LOGIC_LANE_0 (0x0 << 2)
>> +#define LANE1_MAP_LOGIC_LANE_1 (0x1 << 2)
>> +#define LANE1_MAP_LOGIC_LANE_2 (0x2 << 2)
>> +#define LANE1_MAP_LOGIC_LANE_3 (0x3 << 2)
>> +#define LANE0_MAP_LOGIC_LANE_0 (0x0 << 0)
>> +#define LANE0_MAP_LOGIC_LANE_1 (0x1 << 0)
>> +#define LANE0_MAP_LOGIC_LANE_2 (0x2 << 0)
>> +#define LANE0_MAP_LOGIC_LANE_3 (0x3 << 0)
>> +
>> +/* ROCKCHIP_EDP_ANALOG_CTL_2 */
>> +#define SEL_24M (0x1 << 3)
>> +
>> +/* ROCKCHIP_EDP_COMMON_INT_STA_1 */
>> +#define VSYNC_DET BIT(7)
>> +#define PLL_LOCK_CHG BIT(6)
>> +#define SPDIF_ERR BIT(5)
>> +#define SPDIF_UNSTBL BIT(4)
>> +#define VID_FORMAT_CHG BIT(3)
>> +#define AUD_CLK_CHG BIT(2)
>> +#define VID_CLK_CHG BIT(1)
>> +#define SW_INT BIT(0)
>> +
>> +/* ROCKCHIP_EDP_COMMON_INT_STA_2 */
>> +#define ENC_EN_CHG BIT(6)
>> +#define HW_BKSV_RDY BIT(3)
>> +#define HW_SHA_DONE BIT(2)
>> +#define HW_AUTH_STATE_CHG BIT(1)
>> +#define HW_AUTH_DONE BIT(0)
>> +
>> +/* ROCKCHIP_EDP_COMMON_INT_STA_3 */
>> +#define AFIFO_UNDER BIT(7)
>> +#define AFIFO_OVER BIT(6)
>> +#define R0_CHK_FLAG BIT(5)
>> +
>> +/* ROCKCHIP_EDP_COMMON_INT_STA_4 */
>> +#define PSR_ACTIVE BIT(7)
>> +#define PSR_INACTIVE BIT(6)
>> +#define SPDIF_BI_PHASE_ERR BIT(5)
>> +#define HOTPLUG_CHG BIT(2)
>> +#define HPD_LOST BIT(1)
>> +#define PLUG BIT(0)
>> +
>> +/* ROCKCHIP_EDP_INT_STA */
>> +#define INT_HPD BIT(6)
>> +#define HW_LT_DONE BIT(5)
>> +#define SINK_LOST BIT(3)
>> +#define LINK_LOST BIT(2)
>> +#define RPLY_RECEIV BIT(1)
>> +#define AUX_ERR BIT(0)
>> +
>> +/* ROCKCHIP_EDP_INT_CTL */
>> +#define INT_CTL 0x3FC
>> +#define SOFT_INT_CTRL BIT(2)
>> +#define INT_POL BIT(0)
>> +
>> +/* ROCKCHIP_EDP_SYS_CTL_1 */
>> +#define DET_STA BIT(2)
>> +#define FORCE_DET BIT(1)
>> +#define DET_CTRL BIT(0)
>> +
>> +/* ROCKCHIP_EDP_SYS_CTL_2 */
>> +#define CHA_CRI(x) (((x) & 0xf) << 4)
>> +#define CHA_STA BIT(2)
>> +#define FORCE_CHA BIT(1)
>> +#define CHA_CTRL BIT(0)
>> +
>> +/* ROCKCHIP_EDP_SYS_CTL_3 */
>> +#define HPD_STATUS BIT(6)
>> +#define F_HPD BIT(5)
>> +#define HPD_CTRL BIT(4)
>> +#define HDCP_RDY BIT(3)
>> +#define STRM_VALID BIT(2)
>> +#define F_VALID BIT(1)
>> +#define VALID_CTRL BIT(0)
>> +
>> +/* ROCKCHIP_EDP_SYS_CTL_4 */
>> +#define FIX_M_AUD BIT(4)
>> +#define ENHANCED BIT(3)
>> +#define FIX_M_VID BIT(2)
>> +#define M_VID_UPDATE_CTRL BIT(0)
>> +
>> +/* ROCKCHIP_EDP_TRAINING_PTN_SET */
>> +#define SCRAMBLING_DISABLE (0x1 << 5)
>> +#define SCRAMBLING_ENABLE (0x0 << 5)
>> +#define LINK_QUAL_PATTERN_SET_MASK (0x7 << 2)
>> +#define LINK_QUAL_PATTERN_SET_PRBS7 (0x3 << 2)
>> +#define LINK_QUAL_PATTERN_SET_D10_2 (0x1 << 2)
>> +#define LINK_QUAL_PATTERN_SET_DISABLE (0x0 << 2)
>> +#define SW_TRAINING_PATTERN_SET_MASK (0x3 << 0)
>> +#define SW_TRAINING_PATTERN_SET_PTN2 (0x2 << 0)
>> +#define SW_TRAINING_PATTERN_SET_PTN1 (0x1 << 0)
>> +#define SW_TRAINING_PATTERN_SET_DISABLE (0x0 << 0)
>> +
>> +/* ROCKCHIP_EDP_HW_LT_CTL */
>> +#define HW_LT_ERR_CODE_MASK 0x70
>> +#define HW_LT_EN BIT(0)
>> +
>> +/* ROCKCHIP_EDP_LN0_LINK_TRAINING_CTL */
>> +#define PRE_EMPHASIS_SET_MASK (0x3 << 3)
>> +#define PRE_EMPHASIS_SET_SHIFT (3)
>> +
>> +/* ROCKCHIP_EDP_DEBUG_CTL */
>> +#define PLL_LOCK BIT(4)
>> +#define F_PLL_LOCK BIT(3)
>> +#define PLL_LOCK_CTRL BIT(2)
>> +#define POLL_EN BIT(1)
>> +#define PN_INV BIT(0)
>> +
>> +/* ROCKCHIP_EDP_AUX_CH_STA */
>> +#define AUX_BUSY (0x1 << 4)
>> +#define AUX_STATUS_MASK (0xf << 0)
>> +
>> +/* ROCKCHIP_EDP_AUX_CH_DEFER_CTL */
>> +#define DEFER_CTRL_EN (0x1 << 7)
>> +#define DEFER_COUNT(x) (((x) & 0x7f) << 0)
>> +
>> +/* ROCKCHIP_EDP_AUX_RX_COMM */
>> +#define AUX_RX_COMM_I2C_DEFER (0x2 << 2)
>> +#define AUX_RX_COMM_AUX_DEFER (0x2 << 0)
>> +
>> +/* ROCKCHIP_EDP_BUFFER_DATA_CTL */
>> +#define BUF_CLR (0x1 << 7)
>> +#define BUF_DATA_COUNT(x) (((x) & 0xf) << 0)
>> +
>> +/* ROCKCHIP_EDP_AUX_CH_CTL_1 */
>> +#define AUX_LENGTH(x) (((x - 1) & 0xf) << 4)
>> +#define AUX_TX_COMM_MASK (0xf << 0)
>> +#define AUX_TX_COMM_DP_TRANSACTION (0x1 << 3)
>> +#define AUX_TX_COMM_I2C_TRANSACTION (0x0 << 3)
>> +#define AUX_TX_COMM_MOT (0x1 << 2)
>> +#define AUX_TX_COMM_WRITE (0x0 << 0)
>> +#define AUX_TX_COMM_READ (0x1 << 0)
>> +
>> +/* OCKCHIP_EDP_AUX_ADDR_7_0 */
>> +#define AUX_ADDR_7_0(x) (((x) >> 0) & 0xff)
>> +
>> +/* ROCKCHIP_EDP_AUX_ADDR_15_8 */
>> +#define AUX_ADDR_15_8(x) (((x) >> 8) & 0xff)
>> +
>> +/* ROCKCHIP_EDP_AUX_ADDR_19_16 */
>> +#define AUX_ADDR_19_16(x) (((x) >> 16) & 0x0f)
>> +
>> +/* ROCKCHIP_EDP_AUX_CH_CTL_2 */
>> +#define ADDR_ONLY BIT(1)
>> +#define AUX_EN BIT(0)
>> +
>> +#endif /* _ROCKCHIP_EDP_REG_H */
>> --
>> 1.7.9.5
>>
>>
>
>
--
陈有敏 Jeff Chen
福州瑞芯微电子有限公司
Fuzhou Rockchip Electronics Co.Ltd
地址：福建省福州市铜盘路软件大道89号软件园A区18号楼
No. 18 Building, A District, No.89,software Boulevard Fuzhou,Fujian,PRC
邮编：350003
电话:（86-0591）83991906/83991907-8596
E-mail:cym@...k-chips.com
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