On Wed, 15 Nov 2023 at 01:00, Jonathan Marek <jonathan@xxxxxxxx> wrote: > > For the bonded DSI case, DSC pic_width and timing calculations should use > the width of a single panel instead of the total combined width. > > Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx> Fixes tag? I'll wait for the Tested-by by Marijn, otherwise LGTM. > --- > drivers/gpu/drm/msm/dsi/dsi.h | 3 ++- > drivers/gpu/drm/msm/dsi/dsi_host.c | 20 +++++++++++--------- > drivers/gpu/drm/msm/dsi/dsi_manager.c | 2 +- > 3 files changed, 14 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h > index 28379b1af63f..3a641e69447c 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi.h > +++ b/drivers/gpu/drm/msm/dsi/dsi.h > @@ -93,7 +93,8 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host); > int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, > const struct drm_display_mode *mode); > enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host, > - const struct drm_display_mode *mode); > + const struct drm_display_mode *mode, > + bool is_bonded_dsi); > unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host); > int msm_dsi_host_register(struct mipi_dsi_host *host); > void msm_dsi_host_unregister(struct mipi_dsi_host *host); > diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c > index 892a463a7e03..cf06736e5a60 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi_host.c > +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c > @@ -940,8 +940,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) > mode->hdisplay, mode->vdisplay); > return; > } > - Nit: keep it please. > - dsc->pic_width = mode->hdisplay; > + dsc->pic_width = hdisplay; > dsc->pic_height = mode->vdisplay; > DBG("Mode %dx%d\n", dsc->pic_width, dsc->pic_height); > > @@ -952,6 +951,11 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) > if (ret) > return; > > + if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) > + dsi_update_dsc_timing(msm_host, false, hdisplay); > + else > + dsi_update_dsc_timing(msm_host, true, hdisplay); > + > /* Divide the display by 3 but keep back/font porch and > * pulse width same > */ > @@ -968,9 +972,6 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) > } > > if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) { > - if (msm_host->dsc) > - dsi_update_dsc_timing(msm_host, false, mode->hdisplay); > - > dsi_write(msm_host, REG_DSI_ACTIVE_H, > DSI_ACTIVE_H_START(ha_start) | > DSI_ACTIVE_H_END(ha_end)); > @@ -989,9 +990,6 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) > DSI_ACTIVE_VSYNC_VPOS_START(vs_start) | > DSI_ACTIVE_VSYNC_VPOS_END(vs_end)); > } else { /* command mode */ > - if (msm_host->dsc) > - dsi_update_dsc_timing(msm_host, true, mode->hdisplay); > - > /* image data and 1 byte write_memory_start cmd */ > if (!msm_host->dsc) > wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1; > @@ -2479,7 +2477,8 @@ int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, > } > > enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host, > - const struct drm_display_mode *mode) > + const struct drm_display_mode *mode, > + bool is_bonded_dsi) > { > struct msm_dsi_host *msm_host = to_msm_dsi_host(host); > struct drm_dsc_config *dsc = msm_host->dsc; > @@ -2489,6 +2488,9 @@ enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host, > if (!msm_host->dsc) > return MODE_OK; > > + if (is_bonded_dsi) > + pic_width = mode->hdisplay / 2; > + > if (pic_width % dsc->slice_width) { > pr_err("DSI: pic_width %d has to be multiple of slice %d\n", > pic_width, dsc->slice_width); > diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c > index 896f369fdd53..2ca1a7ca3659 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c > +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c > @@ -455,7 +455,7 @@ static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge, > return MODE_ERROR; > } > > - return msm_dsi_host_check_dsc(host, mode); > + return msm_dsi_host_check_dsc(host, mode, IS_BONDED_DSI()); > } > > static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { > -- > 2.26.1 > -- With best wishes Dmitry