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Message-ID: <1468996076.11841.43.camel@mtksdaap41>
Date: Wed, 20 Jul 2016 14:27:56 +0800
From: CK Hu <ck.hu@...iatek.com>
To: YT Shen <yt.shen@...iatek.com>
CC: <dri-devel@...ts.freedesktop.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
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>,
"Russell King" <linux@....linux.org.uk>,
David Airlie <airlied@...ux.ie>,
"Matthias Brugger" <matthias.bgg@...il.com>,
Mao Huang <littlecvr@...omium.org>,
"Bibby Hsieh" <bibby.hsieh@...iatek.com>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<srv_heupstream@...iatek.com>,
"Sascha Hauer" <kernel@...gutronix.de>,
<yingjoe.chen@...iatek.com>, <emil.l.velikov@...il.com>,
<thierry.reding@...il.com>,
shaoming chen <shaoming.chen@...iatek.com>
Subject: Re: [PATCH v4 7/8] drm/mediatek: add mipi panel support
Hi, YT:
Some comments inline.
On Fri, 2016-07-15 at 18:07 +0800, YT Shen wrote:
> From: shaoming chen <shaoming.chen@...iatek.com>
>
> add dsi and mipi tx driver for mipi panel support
>
> Signed-off-by: shaoming chen <shaoming.chen@...iatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_dsi.c | 169 ++++++++++++++++++++++----------
> drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 82 +++++++++++-----
> 2 files changed, 173 insertions(+), 78 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 1f99894..4eae63c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -29,9 +29,6 @@
>
> #include "mtk_drm_ddp_comp.h"
>
> -#define DSI_VIDEO_FIFO_DEPTH (1920 / 4)
> -#define DSI_HOST_FIFO_DEPTH 64
> -
I think this should be moved to a 'cleaning up and refine' patch.
> #define DSI_START 0x00
>
> #define DSI_INTEN 0x08
> @@ -55,7 +52,7 @@
> #define MIX_MODE BIT(17)
>
> #define DSI_TXRX_CTRL 0x18
> -#define VC_NUM (2 << 0)
> +#define VC_NUM BIT(1)
I think this should be moved to a 'cleaning up and refine' patch.
> #define LANE_NUM (0xf << 2)
> #define DIS_EOT BIT(6)
> #define NULL_EN BIT(7)
> @@ -94,6 +91,8 @@
> #define DSI_RACK 0x84
> #define RACK BIT(0)
>
> +#define DSI_MEM_CONTI 0x90
> +
> #define DSI_PHY_LCCON 0x104
> #define LC_HS_TX_EN BIT(0)
> #define LC_ULPM_EN BIT(1)
> @@ -126,6 +125,10 @@
> #define CLK_HS_POST (0xff << 8)
> #define CLK_HS_EXIT (0xff << 16)
>
> +#define DSI_VM_CMD_CON 0x130
> +#define VM_CMD_EN BIT(0)
> +#define TS_VFP_EN BIT(5)
The bitwise definition should add one more tab to align other bitwise
definition in this file.
> +
> #define DSI_CMDQ0 0x180
>
> #define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0))
> @@ -239,11 +242,11 @@ static void mtk_dsi_mask(struct mtk_dsi *dsi, u32 offset, u32 mask, u32 data)
> writel((temp & ~mask) | (data & mask), dsi->regs + offset);
> }
>
> -static void dsi_phy_timconfig(struct mtk_dsi *dsi)
> +static void mtk_dsi_phy_timconfig(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> u32 timcon0, timcon1, timcon2, timcon3;
> - unsigned int ui, cycle_time;
> - unsigned int lpx;
> + u32 ui, cycle_time;
> + u32 lpx;
I think this should be moved to a 'cleaning up and refine' patch.
>
> ui = 1000 / dsi->data_rate + 0x01;
> cycle_time = 8000 / dsi->data_rate + 0x01;
> @@ -273,7 +276,7 @@ static void mtk_dsi_disable(struct mtk_dsi *dsi)
> mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_EN, 0);
> }
>
> -static void mtk_dsi_reset(struct mtk_dsi *dsi)
> +static void mtk_dsi_reset_engine(struct mtk_dsi *dsi)
> {
> mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, DSI_RESET);
> mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, 0);
> @@ -293,7 +296,9 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
> * mipi_ratio is mipi clk coefficient for balance the pixel clk in mipi.
> * we set mipi_ratio is 1.05.
> */
> - dsi->data_rate = dsi->vm.pixelclock * 3 * 21 / (1 * 1000 * 10);
> + dsi->data_rate = dsi->vm.pixelclock * 12 * 21;
> + dsi->data_rate /= (dsi->lanes * 1000 * 10);
> + dev_info(dev, "set mipitx's data rate: %dMHz\n", dsi->data_rate);
>
> ret = clk_set_rate(dsi->hs_clk, dsi->data_rate * 1000000);
> if (ret < 0) {
> @@ -315,10 +320,6 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
> goto err_disable_engine_clk;
> }
>
> - mtk_dsi_enable(dsi);
> - mtk_dsi_reset(dsi);
> - dsi_phy_timconfig(dsi);
> -
> return 0;
>
> err_disable_engine_clk:
> @@ -330,33 +331,33 @@ err_refcount:
> return ret;
> }
>
> -static void dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
> +static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
> - mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
> + mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, LC_ULPM_EN);
> }
>
> -static void dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi)
> +static void mtk_dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, LC_WAKEUP_EN);
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, 0);
> }
>
> -static void dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi)
> +static void mtk_dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_HS_TX_EN, 0);
> - mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
> + mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, LD0_ULPM_EN);
> }
>
> -static void dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi)
> +static void mtk_dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi)
> {
> mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
> mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, LD0_WAKEUP_EN);
> mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, 0);
> }
>
> -static bool dsi_clk_hs_state(struct mtk_dsi *dsi)
> +static bool mtk_dsi_clk_hs_state(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> u32 tmp_reg1;
>
> @@ -364,15 +365,15 @@ static bool dsi_clk_hs_state(struct mtk_dsi *dsi)
> return ((tmp_reg1 & LC_HS_TX_EN) == 1) ? true : false;
> }
>
> -static void dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
> +static void mtk_dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> - if (enter && !dsi_clk_hs_state(dsi))
> + if (enter && !mtk_dsi_clk_hs_state(dsi))
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, LC_HS_TX_EN);
> - else if (!enter && dsi_clk_hs_state(dsi))
> + else if (!enter && mtk_dsi_clk_hs_state(dsi))
> mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
> }
>
> -static void dsi_set_mode(struct mtk_dsi *dsi)
> +static void mtk_dsi_set_mode(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> u32 vid_mode = CMD_MODE;
>
> @@ -382,12 +383,22 @@ static void dsi_set_mode(struct mtk_dsi *dsi)
> if ((dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) &&
> !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE))
> vid_mode = BURST_MODE;
> + else
> + vid_mode = SYNC_EVENT_MODE;
> }
>
> writel(vid_mode, dsi->regs + DSI_MODE_CTRL);
> }
>
> -static void dsi_ps_control_vact(struct mtk_dsi *dsi)
> +static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi)
> +{
> + writel(0x3c, dsi->regs + DSI_MEM_CONTI);
> +
> + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, VM_CMD_EN, VM_CMD_EN);
> + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN);
> +}
> +
> +static void mtk_dsi_ps_control_vact(struct mtk_dsi *dsi)
> {
> struct videomode *vm = &dsi->vm;
> u32 dsi_buf_bpp, ps_wc;
> @@ -421,7 +432,7 @@ static void dsi_ps_control_vact(struct mtk_dsi *dsi)
> writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC);
> }
>
> -static void dsi_rxtx_control(struct mtk_dsi *dsi)
> +static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> u32 tmp_reg;
>
> @@ -443,12 +454,15 @@ static void dsi_rxtx_control(struct mtk_dsi *dsi)
> break;
> }
>
> + tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6;
> + tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3;
> +
> writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL);
> }
>
> -static void dsi_ps_control(struct mtk_dsi *dsi)
> +static void mtk_dsi_ps_control(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> - unsigned int dsi_tmp_buf_bpp;
> + u32 dsi_tmp_buf_bpp;
> u32 tmp_reg;
>
> switch (dsi->format) {
> @@ -478,12 +492,12 @@ static void dsi_ps_control(struct mtk_dsi *dsi)
> writel(tmp_reg, dsi->regs + DSI_PSCTRL);
> }
>
> -static void dsi_config_vdo_timing(struct mtk_dsi *dsi)
> +static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
I think this should be moved to a 'cleaning up and refine' patch.
> {
> - unsigned int horizontal_sync_active_byte;
> - unsigned int horizontal_backporch_byte;
> - unsigned int horizontal_frontporch_byte;
> - unsigned int dsi_tmp_buf_bpp;
> + u32 horizontal_sync_active_byte;
> + u32 horizontal_backporch_byte;
> + u32 horizontal_frontporch_byte;
> + u32 dsi_tmp_buf_bpp;
I think this should be moved to a 'cleaning up and refine' patch.
>
> struct videomode *vm = &dsi->vm;
>
> @@ -512,7 +526,7 @@ static void dsi_config_vdo_timing(struct mtk_dsi *dsi)
> writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC);
> writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC);
>
> - dsi_ps_control(dsi);
> + mtk_dsi_ps_control(dsi);
> }
>
> static void mtk_dsi_start(struct mtk_dsi *dsi)
> @@ -521,6 +535,19 @@ static void mtk_dsi_start(struct mtk_dsi *dsi)
> writel(1, dsi->regs + DSI_START);
> }
>
> +static void mtk_dsi_stop(struct mtk_dsi *dsi)
> +{
> + writel(0, dsi->regs + DSI_START);
> +}
> +
> +static void mtk_dsi_set_cmd_mode(struct mtk_dsi *dsi)
> +{
> + u32 tmp_reg1;
> +
> + tmp_reg1 = CMD_MODE;
> + writel(tmp_reg1, dsi->regs + DSI_MODE_CTRL);
> +}
> +
> static void mtk_dsi_set_interrupt_enable(struct mtk_dsi *dsi)
> {
> u32 inten = DSI_INT_ALL_BITS;
> @@ -609,6 +636,21 @@ static s32 mtk_dsi_wait_for_irq_timeout(struct mtk_dsi *dsi, u32 irq_bit,
> return -1;
> }
>
> +static void mtk_dsi_switch_to_cmd_mode(struct mtk_dsi *dsi)
> +{
> + s32 ret = 0;
> +
> + mtk_dsi_set_cmd_mode(dsi);
> +
> + ret = mtk_dsi_wait_for_irq_timeout(dsi, DSI_INT_VM_DONE_FLAG, 500);
> + if (ret != 0) {
> + dev_info(dsi->dev, "dsi wait engine idle timeout\n");
> +
> + mtk_dsi_enable(dsi);
> + mtk_dsi_reset_engine(dsi);
> + }
> +}
> +
> static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
> {
> if (WARN_ON(dsi->refcount == 0))
> @@ -617,8 +659,19 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
> if (--dsi->refcount != 0)
> return;
>
> - dsi_lane0_ulp_mode_enter(dsi);
> - dsi_clk_ulp_mode_enter(dsi);
> + mtk_dsi_switch_to_cmd_mode(dsi);
> +
> + if (dsi->panel) {
> + if (drm_panel_unprepare(dsi->panel)) {
> + DRM_ERROR("failed to unprepare the panel\n");
> + return;
> + }
> + }
> +
> + mtk_dsi_reset_engine(dsi);
> +
> + mtk_dsi_lane0_ulp_mode_enter(dsi);
> + mtk_dsi_clk_ulp_mode_enter(dsi);
>
> mtk_dsi_disable(dsi);
>
> @@ -635,32 +688,40 @@ static void mtk_output_dsi_enable(struct mtk_dsi *dsi)
> if (dsi->enabled)
> return;
>
> - if (dsi->panel) {
> - if (drm_panel_prepare(dsi->panel)) {
> - DRM_ERROR("failed to setup the panel\n");
> - return;
> - }
> - }
> -
> ret = mtk_dsi_poweron(dsi);
> if (ret < 0) {
> DRM_ERROR("failed to power on dsi\n");
> return;
> }
>
> - dsi_rxtx_control(dsi);
> + usleep_range(20000, 21000);
>
> - dsi_clk_ulp_mode_leave(dsi);
> - dsi_lane0_ulp_mode_leave(dsi);
> - dsi_clk_hs_mode(dsi, 0);
> - dsi_set_mode(dsi);
> -
> - dsi_ps_control_vact(dsi);
> - dsi_config_vdo_timing(dsi);
> + mtk_dsi_rxtx_control(dsi);
> + mtk_dsi_phy_timconfig(dsi);
> + mtk_dsi_ps_control_vact(dsi);
> + mtk_dsi_set_vm_cmd(dsi);
> + mtk_dsi_config_vdo_timing(dsi);
> mtk_dsi_set_interrupt_enable(dsi);
>
> - dsi_set_mode(dsi);
> - dsi_clk_hs_mode(dsi, 1);
> + mtk_dsi_enable(dsi);
> + mtk_dsi_clk_ulp_mode_leave(dsi);
> + mtk_dsi_lane0_ulp_mode_leave(dsi);
> + mtk_dsi_clk_hs_mode(dsi, 0);
> +
> + if (dsi->panel) {
> + if (drm_panel_prepare(dsi->panel)) {
> + DRM_ERROR("failed to prepare the panel\n");
> + return;
> + }
> +
> + if (drm_panel_enable(dsi->panel)) {
> + DRM_ERROR("failed to enable the panel\n");
> + return;
> + }
> + }
> +
> + mtk_dsi_set_mode(dsi);
> + mtk_dsi_clk_hs_mode(dsi, 1);
>
> mtk_dsi_start(dsi);
>
> @@ -679,6 +740,7 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
> }
> }
>
> + mtk_dsi_stop(dsi);
> mtk_dsi_poweroff(dsi);
>
> dsi->enabled = false;
> @@ -1351,6 +1413,7 @@ static int mtk_dsi_remove(struct platform_device *pdev)
> }
>
> static const struct of_device_id mtk_dsi_of_match[] = {
> + { .compatible = "mediatek,mt2701-dsi" },
This is not related to 'mipi panel support'. So move this modification
to another patch.
> { .compatible = "mediatek,mt8173-dsi" },
> { },
> };
> diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> index cf8f38d..3bffc40 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> @@ -16,6 +16,7 @@
> #include <linux/delay.h>
> #include <linux/io.h>
> #include <linux/module.h>
> +#include <linux/of_device.h>
> #include <linux/platform_device.h>
> #include <linux/phy/phy.h>
>
> @@ -87,6 +88,9 @@
>
> #define MIPITX_DSI_PLL_CON2 0x58
>
> +#define MIPITX_DSI_PLL_TOP 0x64
> +#define RG_DSI_MPPLL_PRESERVE (0xff << 8)
> +
> #define MIPITX_DSI_PLL_PWR 0x68
> #define RG_DSI_MPPLL_SDM_PWR_ON BIT(0)
> #define RG_DSI_MPPLL_SDM_ISO_EN BIT(1)
> @@ -123,10 +127,32 @@
> #define SW_LNT2_HSTX_PRE_OE BIT(24)
> #define SW_LNT2_HSTX_OE BIT(25)
>
> +struct mtk_mipitx_data {
> + const u32 data;
> +};
> +
> +static const struct mtk_mipitx_data mt2701_mipitx_data = {
> + .data = (3 << 8)
> +};
> +
> +static const struct mtk_mipitx_data mt8173_mipitx_data = {
> + .data = (0 << 8)
> +};
> +
> +static const struct of_device_id mtk_mipi_tx_match[] = {
> + { .compatible = "mediatek,mt2701-mipi-tx",
> + .data = &mt2701_mipitx_data },
> + { .compatible = "mediatek,mt8173-mipi-tx",
> + .data = &mt8173_mipitx_data },
> + {},
> +};
This looks more like 'mt2701 support' rather than 'mipi panel support'.
So move this modification to another patch.
> +
> struct mtk_mipi_tx {
> struct device *dev;
> void __iomem *regs;
> - unsigned int data_rate;
> + u32 data_rate;
> + const struct mtk_mipitx_data *driver_data;
> +
> struct clk_hw pll_hw;
> struct clk *pll;
> };
> @@ -163,12 +189,14 @@ static void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
> static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> {
> struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
> - unsigned int txdiv, txdiv0, txdiv1;
> + u8 txdiv, txdiv0, txdiv1;
> u64 pcw;
>
> dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate);
>
> - if (mipi_tx->data_rate >= 500000000) {
> + if (mipi_tx->data_rate > 1250000000) {
> + return -EINVAL;
> + } else if (mipi_tx->data_rate >= 500000000) {
> txdiv = 1;
> txdiv0 = 0;
> txdiv1 = 0;
> @@ -192,6 +220,10 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> return -EINVAL;
> }
>
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> + RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
> + (8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
> +
> mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON,
> RG_DSI_VOUT_MSK |
> RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN,
> @@ -201,24 +233,18 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
>
> usleep_range(30, 100);
>
> - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> - RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
> - (8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
> -
> - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_CON,
> - RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_CON,
> + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN,
> + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
>
> mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
> RG_DSI_MPPLL_SDM_PWR_ON |
> RG_DSI_MPPLL_SDM_ISO_EN,
> RG_DSI_MPPLL_SDM_PWR_ON);
>
> - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> - RG_DSI_MPPLL_PLL_EN);
> -
> mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> - RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 |
> - RG_DSI_MPPLL_PREDIV,
> + RG_DSI_MPPLL_PREDIV | RG_DSI_MPPLL_TXDIV0 |
> + RG_DSI_MPPLL_TXDIV1 | RG_DSI_MPPLL_POSDIV,
> (txdiv0 << 3) | (txdiv1 << 5));
>
> /*
> @@ -233,15 +259,21 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> 26000000);
> writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2);
>
> - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> - RG_DSI_MPPLL_SDM_FRA_EN);
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> + RG_DSI_MPPLL_SDM_FRA_EN,
> + RG_DSI_MPPLL_SDM_FRA_EN);
>
> - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN);
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> + RG_DSI_MPPLL_PLL_EN, RG_DSI_MPPLL_PLL_EN);
>
> usleep_range(20, 100);
>
> mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> - RG_DSI_MPPLL_SDM_SSC_EN);
> + RG_DSI_MPPLL_SDM_SSC_EN);
> +
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
> + RG_DSI_MPPLL_PRESERVE,
> + mipi_tx->driver_data->data);
>
> return 0;
> }
> @@ -255,6 +287,10 @@ static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
> mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> RG_DSI_MPPLL_PLL_EN);
>
> + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
> + RG_DSI_MPPLL_PRESERVE,
> + mipi_tx->driver_data->data);
> +
> mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
> RG_DSI_MPPLL_SDM_ISO_EN |
> RG_DSI_MPPLL_SDM_PWR_ON,
> @@ -310,7 +346,7 @@ static const struct clk_ops mtk_mipi_tx_pll_ops = {
> static int mtk_mipi_tx_power_on_signal(struct phy *phy)
> {
> struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
> - unsigned int reg;
> + u32 reg;
I think this should be moved to a 'cleaning up and refine' patch.
>
> for (reg = MIPITX_DSI_CLOCK_LANE;
> reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
> @@ -341,7 +377,7 @@ static int mtk_mipi_tx_power_on(struct phy *phy)
> static void mtk_mipi_tx_power_off_signal(struct phy *phy)
> {
> struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
> - unsigned int reg;
> + u32 reg;
I think this should be moved to a 'cleaning up and refine' patch.
>
> mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> RG_DSI_PAD_TIE_LOW_EN);
> @@ -391,6 +427,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
> if (!mipi_tx)
> return -ENOMEM;
>
> + mipi_tx->driver_data = of_device_get_match_data(dev);
> mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> mipi_tx->regs = devm_ioremap_resource(dev, mem);
> if (IS_ERR(mipi_tx->regs)) {
> @@ -448,11 +485,6 @@ static int mtk_mipi_tx_remove(struct platform_device *pdev)
> return 0;
> }
>
> -static const struct of_device_id mtk_mipi_tx_match[] = {
> - { .compatible = "mediatek,mt8173-mipi-tx", },
> - {},
> -};
> -
> struct platform_driver mtk_mipi_tx_driver = {
> .probe = mtk_mipi_tx_probe,
> .remove = mtk_mipi_tx_remove,
Regards,
CK
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