| Message ID | 1645133788-5057-4-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | drm/msm/dpu: enable widebus feature base on chip hardware revision | expand |
On Fri, 18 Feb 2022 at 00:36, Kuogee Hsieh <quic_khsieh@quicinc.com> wrote: > > Widebus feature will transmit two pixel data per pixel clock to interface. > Timing engine provides driving force for this purpose. This patch base > on HPG (Hardware Programming Guide) to revise timing engine register > setting to accommodate both widebus and non widebus application. Also > horizontal width parameters need to be reduced by half since two pixel > data are clocked out per pixel clock when widebus feature enabled. > > Widebus can be enabled individually at DP. However at DSI, widebus have > to be enabled along with DSC to achieve pixel clock rate be scaled down > with same ratio as compression ratio when 10 bits per source component. > Therefore this patch add no supports of DSI related widebus and compression. > > Changes in v2: > -- remove compression related code from timing > -- remove op_info from struct msm_drm_private > -- remove unnecessary wide_bus_en variables > -- pass wide_bus_en into timing configuration by struct msm_dp > > Changes in v3: > -- split patch into 3 patches > > Changes in v4: > -- rework timing engine to not interfere with dsi/hdmi > -- cover both widebus and compression > > Changes in v5: > -- remove supports of DSI widebus and compression > > Changes in v7: > -- split this patch into 3 patches > -- add Tested-by > > Changes in v8: > -- move new registers writes under DATA_HCTL_EN features check. > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 10 ++++ > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 2 + > .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 14 ++++++ > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 54 ++++++++++++++++------ > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h | 2 + > 5 files changed, 68 insertions(+), 14 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > index 0d315b4..0c22839 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > @@ -208,6 +208,8 @@ struct dpu_encoder_virt { > > u32 idle_timeout; > > + bool wide_bus_en; > + > struct msm_dp *dp; > }; > > @@ -217,6 +219,14 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = { > 15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10 > }; > > + > +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc) > +{ > + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); > + > + return dpu_enc->wide_bus_en; > +} > + > static void _dpu_encoder_setup_dither(struct dpu_hw_pingpong *hw_pp, unsigned bpc) > { > struct dpu_hw_dither_cfg dither_cfg = { 0 }; > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > index 99a5d73..893d74d 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > @@ -168,4 +168,6 @@ int dpu_encoder_get_linecount(struct drm_encoder *drm_enc); > */ > int dpu_encoder_get_frame_count(struct drm_encoder *drm_enc); > > +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc); > + > #endif /* __DPU_ENCODER_H__ */ > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c > index 185379b..2af2bb7 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c > @@ -110,6 +110,20 @@ static void drm_mode_to_intf_timing_params( > timing->v_back_porch += timing->v_front_porch; > timing->v_front_porch = 0; > } > + > + timing->wide_bus_en = dpu_encoder_is_widebus_enabled(phys_enc->parent); > + > + /* > + * for DP, divide the horizonal parameters by 2 when > + * widebus is enabled > + */ > + if (phys_enc->hw_intf->cap->type == INTF_DP && timing->wide_bus_en) { > + timing->width = timing->width >> 1; > + timing->xres = timing->xres >> 1; > + timing->h_back_porch = timing->h_back_porch >> 1; > + timing->h_front_porch = timing->h_front_porch >> 1; > + timing->hsync_pulse_width = timing->hsync_pulse_width >> 1; > + } > } > > static u32 get_horizontal_total(const struct intf_timing_params *timing) > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > index c2cd185..4e4fa56 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > @@ -33,6 +33,7 @@ > #define INTF_TP_COLOR1 0x05C > #define INTF_CONFIG2 0x060 > #define INTF_DISPLAY_DATA_HCTL 0x064 > +#define INTF_ACTIVE_DATA_HCTL 0x068 > #define INTF_FRAME_LINE_COUNT_EN 0x0A8 > #define INTF_FRAME_COUNT 0x0AC > #define INTF_LINE_COUNT 0x0B0 > @@ -96,15 +97,23 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > u32 hsync_period, vsync_period; > u32 display_v_start, display_v_end; > u32 hsync_start_x, hsync_end_x; > + u32 hsync_data_start_x, hsync_data_end_x; > u32 active_h_start, active_h_end; > u32 active_v_start, active_v_end; > u32 active_hctl, display_hctl, hsync_ctl; > u32 polarity_ctl, den_polarity, hsync_polarity, vsync_polarity; > u32 panel_format; > - u32 intf_cfg, intf_cfg2 = 0, display_data_hctl = 0; > + u32 intf_cfg, intf_cfg2 = 0; > + u32 display_data_hctl = 0, active_data_hctl = 0; > + u32 data_width; > + bool dp_intf = false; > > /* read interface_cfg */ > intf_cfg = DPU_REG_READ(c, INTF_CONFIG); > + > + if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) > + dp_intf = true; > + > hsync_period = p->hsync_pulse_width + p->h_back_porch + p->width + > p->h_front_porch; > vsync_period = p->vsync_pulse_width + p->v_back_porch + p->height + > @@ -118,7 +127,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > hsync_start_x = p->h_back_porch + p->hsync_pulse_width; > hsync_end_x = hsync_period - p->h_front_porch - 1; > > - if (p->width != p->xres) { > + if (p->width != p->xres) { /* border fill added */ > active_h_start = hsync_start_x; > active_h_end = active_h_start + p->xres - 1; > } else { > @@ -126,7 +135,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > active_h_end = 0; > } > > - if (p->height != p->yres) { > + if (p->height != p->yres) { /* border fill added */ > active_v_start = display_v_start; > active_v_end = active_v_start + (p->yres * hsync_period) - 1; > } else { > @@ -147,17 +156,36 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; > display_hctl = (hsync_end_x << 16) | hsync_start_x; > > - if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { > + /* > + * DATA_HCTL_EN controls data timing which can be different from > + * video timing. It is recommended to enable it for all cases, except > + * if compression is enabled in 1 pixel per clock mode > + */ > + if (p->wide_bus_en) > + intf_cfg2 |= (INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN); > + > + data_width = p->width; > + > + hsync_data_start_x = hsync_start_x; > + hsync_data_end_x = hsync_start_x + data_width - 1; > + > + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x; > + > + if (dp_intf) { > + /* DP timing adjustment */ > + display_v_start += p->hsync_pulse_width + p->h_back_porch; > + display_v_end -= p->h_front_porch; > + > active_h_start = hsync_start_x; > active_h_end = active_h_start + p->xres - 1; > active_v_start = display_v_start; > active_v_end = active_v_start + (p->yres * hsync_period) - 1; > > - display_v_start += p->hsync_pulse_width + p->h_back_porch; > - display_v_end -= p->h_front_porch; > - > active_hctl = (active_h_end << 16) | active_h_start; > display_hctl = active_hctl; > + > + intf_cfg |= INTF_CFG_ACTIVE_H_EN; > + intf_cfg |= INTF_CFG_ACTIVE_V_EN; > } > > den_polarity = 0; > @@ -187,13 +215,6 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > (COLOR_8BIT << 4) | > (0x21 << 8)); > > - if (ctx->cap->features & BIT(DPU_DATA_HCTL_EN)) { > - intf_cfg2 |= INTF_CFG2_DATA_HCTL_EN; > - display_data_hctl = display_hctl; > - DPU_REG_WRITE(c, INTF_CONFIG2, intf_cfg2); > - DPU_REG_WRITE(c, INTF_DISPLAY_DATA_HCTL, display_data_hctl); > - } > - > DPU_REG_WRITE(c, INTF_HSYNC_CTL, hsync_ctl); > DPU_REG_WRITE(c, INTF_VSYNC_PERIOD_F0, vsync_period * hsync_period); > DPU_REG_WRITE(c, INTF_VSYNC_PULSE_WIDTH_F0, > @@ -211,6 +232,11 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > DPU_REG_WRITE(c, INTF_FRAME_LINE_COUNT_EN, 0x3); > DPU_REG_WRITE(c, INTF_CONFIG, intf_cfg); > DPU_REG_WRITE(c, INTF_PANEL_FORMAT, panel_format); > + if (ctx->cap->features & BIT(DPU_DATA_HCTL_EN)) { > + DPU_REG_WRITE(c, INTF_CONFIG2, intf_cfg2); > + DPU_REG_WRITE(c, INTF_DISPLAY_DATA_HCTL, display_data_hctl); > + DPU_REG_WRITE(c, INTF_ACTIVE_DATA_HCTL, active_data_hctl); > + } > } > > static void dpu_hw_intf_enable_timing_engine( > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h > index 3568be8..e4a518a 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h > @@ -30,6 +30,8 @@ struct intf_timing_params { > u32 border_clr; > u32 underflow_clr; > u32 hsync_skew; > + > + bool wide_bus_en; > }; > > struct intf_prog_fetch { > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
Quoting Kuogee Hsieh (2022-02-17 13:36:27) > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > index 0d315b4..0c22839 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > @@ -217,6 +219,14 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = { > 15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10 > }; > > + > +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc) const? > +{ > + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); const? > + > + return dpu_enc->wide_bus_en; > +} > + > static void _dpu_encoder_setup_dither(struct dpu_hw_pingpong *hw_pp, unsigned bpc) > { > struct dpu_hw_dither_cfg dither_cfg = { 0 }; > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > index 99a5d73..893d74d 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > @@ -168,4 +168,6 @@ int dpu_encoder_get_linecount(struct drm_encoder *drm_enc); > */ > int dpu_encoder_get_frame_count(struct drm_encoder *drm_enc); > > +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc); const drm_enc? > + > #endif /* __DPU_ENCODER_H__ */ > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > index c2cd185..4e4fa56 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > @@ -147,17 +156,36 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, > hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; > display_hctl = (hsync_end_x << 16) | hsync_start_x; > > - if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { > + /* > + * DATA_HCTL_EN controls data timing which can be different from > + * video timing. It is recommended to enable it for all cases, except > + * if compression is enabled in 1 pixel per clock mode > + */ > + if (p->wide_bus_en) > + intf_cfg2 |= (INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN); Drop useless parenthesis please. > + > + data_width = p->width; > + > + hsync_data_start_x = hsync_start_x; > + hsync_data_end_x = hsync_start_x + data_width - 1; > + > + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x; > + > + if (dp_intf) { > + /* DP timing adjustment */ > + display_v_start += p->hsync_pulse_width + p->h_back_porch; > + display_v_end -= p->h_front_porch; Is this code movement intentional? > + > active_h_start = hsync_start_x; > active_h_end = active_h_start + p->xres - 1; > active_v_start = display_v_start; display_v_start is different now. > active_v_end = active_v_start + (p->yres * hsync_period) - 1; > > - display_v_start += p->hsync_pulse_width + p->h_back_porch; > - display_v_end -= p->h_front_porch; > - > active_hctl = (active_h_end << 16) | active_h_start; > display_hctl = active_hctl; > + > + intf_cfg |= INTF_CFG_ACTIVE_H_EN; > + intf_cfg |= INTF_CFG_ACTIVE_V_EN; intf_cfg |= INTF_CFG_ACTIVE_H_EN | INTF_CFG_ACTIVE_V_EN; would be one less line.
On 2/18/2022 6:53 PM, Stephen Boyd wrote: > Quoting Kuogee Hsieh (2022-02-17 13:36:27) >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c >> index 0d315b4..0c22839 100644 >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c >> @@ -217,6 +219,14 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = { >> 15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10 >> }; >> >> + >> +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc) > const? > >> +{ >> + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); > const? > >> + >> + return dpu_enc->wide_bus_en; >> +} >> + >> static void _dpu_encoder_setup_dither(struct dpu_hw_pingpong *hw_pp, unsigned bpc) >> { >> struct dpu_hw_dither_cfg dither_cfg = { 0 }; >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h >> index 99a5d73..893d74d 100644 >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h >> @@ -168,4 +168,6 @@ int dpu_encoder_get_linecount(struct drm_encoder *drm_enc); >> */ >> int dpu_encoder_get_frame_count(struct drm_encoder *drm_enc); >> >> +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc); > const drm_enc? > >> + >> #endif /* __DPU_ENCODER_H__ */ >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c >> index c2cd185..4e4fa56 100644 >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c >> @@ -147,17 +156,36 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, >> hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; >> display_hctl = (hsync_end_x << 16) | hsync_start_x; >> >> - if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { >> + /* >> + * DATA_HCTL_EN controls data timing which can be different from >> + * video timing. It is recommended to enable it for all cases, except >> + * if compression is enabled in 1 pixel per clock mode >> + */ >> + if (p->wide_bus_en) >> + intf_cfg2 |= (INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN); > Drop useless parenthesis please. > >> + >> + data_width = p->width; >> + >> + hsync_data_start_x = hsync_start_x; >> + hsync_data_end_x = hsync_start_x + data_width - 1; >> + >> + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x; >> + >> + if (dp_intf) { >> + /* DP timing adjustment */ >> + display_v_start += p->hsync_pulse_width + p->h_back_porch; >> + display_v_end -= p->h_front_porch; > Is this code movement intentional? yes, this timing adjustment is required for DP/eDP > >> + >> active_h_start = hsync_start_x; >> active_h_end = active_h_start + p->xres - 1; >> active_v_start = display_v_start; > display_v_start is different now. > >> active_v_end = active_v_start + (p->yres * hsync_period) - 1; >> >> - display_v_start += p->hsync_pulse_width + p->h_back_porch; >> - display_v_end -= p->h_front_porch; >> - >> active_hctl = (active_h_end << 16) | active_h_start; >> display_hctl = active_hctl; >> + >> + intf_cfg |= INTF_CFG_ACTIVE_H_EN; >> + intf_cfg |= INTF_CFG_ACTIVE_V_EN; > intf_cfg |= INTF_CFG_ACTIVE_H_EN | INTF_CFG_ACTIVE_V_EN; > > would be one less line.
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 0d315b4..0c22839 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -208,6 +208,8 @@ struct dpu_encoder_virt { u32 idle_timeout; + bool wide_bus_en; + struct msm_dp *dp; }; @@ -217,6 +219,14 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = { 15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10 }; + +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + + return dpu_enc->wide_bus_en; +} + static void _dpu_encoder_setup_dither(struct dpu_hw_pingpong *hw_pp, unsigned bpc) { struct dpu_hw_dither_cfg dither_cfg = { 0 }; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h index 99a5d73..893d74d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -168,4 +168,6 @@ int dpu_encoder_get_linecount(struct drm_encoder *drm_enc); */ int dpu_encoder_get_frame_count(struct drm_encoder *drm_enc); +bool dpu_encoder_is_widebus_enabled(struct drm_encoder *drm_enc); + #endif /* __DPU_ENCODER_H__ */ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c index 185379b..2af2bb7 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c @@ -110,6 +110,20 @@ static void drm_mode_to_intf_timing_params( timing->v_back_porch += timing->v_front_porch; timing->v_front_porch = 0; } + + timing->wide_bus_en = dpu_encoder_is_widebus_enabled(phys_enc->parent); + + /* + * for DP, divide the horizonal parameters by 2 when + * widebus is enabled + */ + if (phys_enc->hw_intf->cap->type == INTF_DP && timing->wide_bus_en) { + timing->width = timing->width >> 1; + timing->xres = timing->xres >> 1; + timing->h_back_porch = timing->h_back_porch >> 1; + timing->h_front_porch = timing->h_front_porch >> 1; + timing->hsync_pulse_width = timing->hsync_pulse_width >> 1; + } } static u32 get_horizontal_total(const struct intf_timing_params *timing) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c index c2cd185..4e4fa56 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -33,6 +33,7 @@ #define INTF_TP_COLOR1 0x05C #define INTF_CONFIG2 0x060 #define INTF_DISPLAY_DATA_HCTL 0x064 +#define INTF_ACTIVE_DATA_HCTL 0x068 #define INTF_FRAME_LINE_COUNT_EN 0x0A8 #define INTF_FRAME_COUNT 0x0AC #define INTF_LINE_COUNT 0x0B0 @@ -96,15 +97,23 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, u32 hsync_period, vsync_period; u32 display_v_start, display_v_end; u32 hsync_start_x, hsync_end_x; + u32 hsync_data_start_x, hsync_data_end_x; u32 active_h_start, active_h_end; u32 active_v_start, active_v_end; u32 active_hctl, display_hctl, hsync_ctl; u32 polarity_ctl, den_polarity, hsync_polarity, vsync_polarity; u32 panel_format; - u32 intf_cfg, intf_cfg2 = 0, display_data_hctl = 0; + u32 intf_cfg, intf_cfg2 = 0; + u32 display_data_hctl = 0, active_data_hctl = 0; + u32 data_width; + bool dp_intf = false; /* read interface_cfg */ intf_cfg = DPU_REG_READ(c, INTF_CONFIG); + + if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) + dp_intf = true; + hsync_period = p->hsync_pulse_width + p->h_back_porch + p->width + p->h_front_porch; vsync_period = p->vsync_pulse_width + p->v_back_porch + p->height + @@ -118,7 +127,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, hsync_start_x = p->h_back_porch + p->hsync_pulse_width; hsync_end_x = hsync_period - p->h_front_porch - 1; - if (p->width != p->xres) { + if (p->width != p->xres) { /* border fill added */ active_h_start = hsync_start_x; active_h_end = active_h_start + p->xres - 1; } else { @@ -126,7 +135,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, active_h_end = 0; } - if (p->height != p->yres) { + if (p->height != p->yres) { /* border fill added */ active_v_start = display_v_start; active_v_end = active_v_start + (p->yres * hsync_period) - 1; } else { @@ -147,17 +156,36 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width; display_hctl = (hsync_end_x << 16) | hsync_start_x; - if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) { + /* + * DATA_HCTL_EN controls data timing which can be different from + * video timing. It is recommended to enable it for all cases, except + * if compression is enabled in 1 pixel per clock mode + */ + if (p->wide_bus_en) + intf_cfg2 |= (INTF_CFG2_DATABUS_WIDEN | INTF_CFG2_DATA_HCTL_EN); + + data_width = p->width; + + hsync_data_start_x = hsync_start_x; + hsync_data_end_x = hsync_start_x + data_width - 1; + + display_data_hctl = (hsync_data_end_x << 16) | hsync_data_start_x; + + if (dp_intf) { + /* DP timing adjustment */ + display_v_start += p->hsync_pulse_width + p->h_back_porch; + display_v_end -= p->h_front_porch; + active_h_start = hsync_start_x; active_h_end = active_h_start + p->xres - 1; active_v_start = display_v_start; active_v_end = active_v_start + (p->yres * hsync_period) - 1; - display_v_start += p->hsync_pulse_width + p->h_back_porch; - display_v_end -= p->h_front_porch; - active_hctl = (active_h_end << 16) | active_h_start; display_hctl = active_hctl; + + intf_cfg |= INTF_CFG_ACTIVE_H_EN; + intf_cfg |= INTF_CFG_ACTIVE_V_EN; } den_polarity = 0; @@ -187,13 +215,6 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, (COLOR_8BIT << 4) | (0x21 << 8)); - if (ctx->cap->features & BIT(DPU_DATA_HCTL_EN)) { - intf_cfg2 |= INTF_CFG2_DATA_HCTL_EN; - display_data_hctl = display_hctl; - DPU_REG_WRITE(c, INTF_CONFIG2, intf_cfg2); - DPU_REG_WRITE(c, INTF_DISPLAY_DATA_HCTL, display_data_hctl); - } - DPU_REG_WRITE(c, INTF_HSYNC_CTL, hsync_ctl); DPU_REG_WRITE(c, INTF_VSYNC_PERIOD_F0, vsync_period * hsync_period); DPU_REG_WRITE(c, INTF_VSYNC_PULSE_WIDTH_F0, @@ -211,6 +232,11 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx, DPU_REG_WRITE(c, INTF_FRAME_LINE_COUNT_EN, 0x3); DPU_REG_WRITE(c, INTF_CONFIG, intf_cfg); DPU_REG_WRITE(c, INTF_PANEL_FORMAT, panel_format); + if (ctx->cap->features & BIT(DPU_DATA_HCTL_EN)) { + DPU_REG_WRITE(c, INTF_CONFIG2, intf_cfg2); + DPU_REG_WRITE(c, INTF_DISPLAY_DATA_HCTL, display_data_hctl); + DPU_REG_WRITE(c, INTF_ACTIVE_DATA_HCTL, active_data_hctl); + } } static void dpu_hw_intf_enable_timing_engine( diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h index 3568be8..e4a518a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h @@ -30,6 +30,8 @@ struct intf_timing_params { u32 border_clr; u32 underflow_clr; u32 hsync_skew; + + bool wide_bus_en; }; struct intf_prog_fetch {