| Message ID | 20231114225857.19702-3-jonathan@marek.ca |
|---|---|
| State | New |
| Headers | show |
| Series | drm/msm: DSI DSC video mode fixes | expand |
On Wed, 15 Nov 2023 at 01:00, Jonathan Marek <jonathan@marek.ca> wrote: > > The value returned by msm_dsi_wide_bus_enabled() doesn't match what the > driver is doing in video mode. Fix that by actually enabling widebus for > video mode. > > Fixes: efcbd6f9cdeb ("drm/msm/dsi: Enable widebus for DSI") > Signed-off-by: Jonathan Marek <jonathan@marek.ca> > --- > drivers/gpu/drm/msm/dsi/dsi.xml.h | 1 + > drivers/gpu/drm/msm/dsi/dsi_host.c | 2 ++ > 2 files changed, 3 insertions(+) Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
On 11/14/2023 2:58 PM, Jonathan Marek wrote: > The value returned by msm_dsi_wide_bus_enabled() doesn't match what the > driver is doing in video mode. Fix that by actually enabling widebus for > video mode. > > Fixes: efcbd6f9cdeb ("drm/msm/dsi: Enable widebus for DSI") > Signed-off-by: Jonathan Marek <jonathan@marek.ca> > --- > drivers/gpu/drm/msm/dsi/dsi.xml.h | 1 + > drivers/gpu/drm/msm/dsi/dsi_host.c | 2 ++ > 2 files changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/msm/dsi/dsi.xml.h b/drivers/gpu/drm/msm/dsi/dsi.xml.h > index 2a7d980e12c3..f0b3cdc020a1 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi.xml.h > +++ b/drivers/gpu/drm/msm/dsi/dsi.xml.h > @@ -231,6 +231,7 @@ static inline uint32_t DSI_VID_CFG0_TRAFFIC_MODE(enum dsi_traffic_mode val) > #define DSI_VID_CFG0_HSA_POWER_STOP 0x00010000 > #define DSI_VID_CFG0_HBP_POWER_STOP 0x00100000 > #define DSI_VID_CFG0_HFP_POWER_STOP 0x01000000 > +#define DSI_VID_CFG0_DATABUS_WIDEN 0x02000000 > #define DSI_VID_CFG0_PULSE_MODE_HSA_HE 0x10000000 > > #define REG_DSI_VID_CFG1 0x0000001c > diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c > index deeecdfd6c4e..f2c1cbd08d4d 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi_host.c > +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c > @@ -745,6 +745,8 @@ static void dsi_ctrl_enable(struct msm_dsi_host *msm_host, > data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags)); > data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt)); > data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel); > + if (msm_dsi_host_is_wide_bus_enabled(&msm_host->base)) > + data |= DSI_VID_CFG0_DATABUS_WIDEN; Hi Jonathan, Now that widebus is enabled for video mode, I think you can also drop the TODO here [1]. Other than that, this LGTM. Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com> Thanks, Jessica Zhang [1] https://elixir.bootlin.com/linux/v6.7-rc3/source/drivers/gpu/drm/msm/dsi/dsi_host.c#L772 > dsi_write(msm_host, REG_DSI_VID_CFG0, data); > > /* Do not swap RGB colors */ > -- > 2.26.1 >
diff --git a/drivers/gpu/drm/msm/dsi/dsi.xml.h b/drivers/gpu/drm/msm/dsi/dsi.xml.h index 2a7d980e12c3..f0b3cdc020a1 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.xml.h +++ b/drivers/gpu/drm/msm/dsi/dsi.xml.h @@ -231,6 +231,7 @@ static inline uint32_t DSI_VID_CFG0_TRAFFIC_MODE(enum dsi_traffic_mode val) #define DSI_VID_CFG0_HSA_POWER_STOP 0x00010000 #define DSI_VID_CFG0_HBP_POWER_STOP 0x00100000 #define DSI_VID_CFG0_HFP_POWER_STOP 0x01000000 +#define DSI_VID_CFG0_DATABUS_WIDEN 0x02000000 #define DSI_VID_CFG0_PULSE_MODE_HSA_HE 0x10000000 #define REG_DSI_VID_CFG1 0x0000001c diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index deeecdfd6c4e..f2c1cbd08d4d 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -745,6 +745,8 @@ static void dsi_ctrl_enable(struct msm_dsi_host *msm_host, data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags)); data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt)); data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel); + if (msm_dsi_host_is_wide_bus_enabled(&msm_host->base)) + data |= DSI_VID_CFG0_DATABUS_WIDEN; dsi_write(msm_host, REG_DSI_VID_CFG0, data); /* Do not swap RGB colors */
The value returned by msm_dsi_wide_bus_enabled() doesn't match what the driver is doing in video mode. Fix that by actually enabling widebus for video mode. Fixes: efcbd6f9cdeb ("drm/msm/dsi: Enable widebus for DSI") Signed-off-by: Jonathan Marek <jonathan@marek.ca> --- drivers/gpu/drm/msm/dsi/dsi.xml.h | 1 + drivers/gpu/drm/msm/dsi/dsi_host.c | 2 ++ 2 files changed, 3 insertions(+)