| Message ID | 20230329-rfc-msm-dsc-helper-v4-4-1b79c78b30d7@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce MSM-specific DSC helpers | expand |
On 05/04/2023 03:41, Jessica Zhang wrote: > Use MSM and DRM DSC helper methods to configure DSC for DSI. > > Changes in V2: > - *_calculate_initial_scale_value --> *_set_initial_scale_value > - Split pkt_per_line and eol_byte_num changes to a separate patch > - Moved pclk_per_line calculation to hdisplay adjustment in `if (dsc)` > block of dsi_update_dsc_timing() > > Changes in v3: > - Split pclk_per_intf calculation into a separate patch > - Added slice_width check to dsi_timing_setup > - Used MSM DSC helper to calculate total_bytes_per_intf > > Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> > --- > drivers/gpu/drm/msm/dsi/dsi_host.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c > index 74d38f90398a..6a6218a9655f 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi_host.c > +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c > @@ -28,6 +28,7 @@ > #include "dsi.xml.h" > #include "sfpb.xml.h" > #include "dsi_cfg.h" > +#include "msm_dsc_helper.h" > #include "msm_kms.h" > #include "msm_gem.h" > #include "phy/dsi_phy.h" > @@ -848,7 +849,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod > /* first calculate dsc parameters and then program > * compress mode registers > */ > - slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width); > + slice_per_intf = msm_dsc_get_slice_per_intf(dsc, hdisplay); > > /* > * If slice_count is greater than slice_per_intf > @@ -858,7 +859,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod > if (dsc->slice_count > slice_per_intf) > dsc->slice_count = 1; > > - total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf; > + total_bytes_per_intf = msm_dsc_get_bytes_per_intf(dsc, hdisplay); > > eol_byte_num = total_bytes_per_intf % 3; > pkt_per_line = slice_per_intf / dsc->slice_count; > @@ -936,6 +937,12 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) > return; > } > > + if (!dsc->slice_width || (mode->hdisplay < dsc->slice_width)) { > + pr_err("DSI: invalid slice width %d (pic_width: %d)\n", > + dsc->slice_width, mode->hdisplay); > + return; > + } This is not the "use of MSM and DRM DSC helper methods" and thus should be moved to a separate patch. > + > dsc->pic_width = mode->hdisplay; > dsc->pic_height = mode->vdisplay; > DBG("Mode %dx%d\n", dsc->pic_width, dsc->pic_height); > @@ -1759,7 +1766,7 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc > return ret; > } > > - dsc->initial_scale_value = 32; > + drm_dsc_set_initial_scale_value(dsc); > dsc->line_buf_depth = dsc->bits_per_component + 1; > > return drm_dsc_compute_rc_parameters(dsc); >
On 4/5/2023 12:27 PM, Dmitry Baryshkov wrote: > On 05/04/2023 03:41, Jessica Zhang wrote: >> Use MSM and DRM DSC helper methods to configure DSC for DSI. >> >> Changes in V2: >> - *_calculate_initial_scale_value --> *_set_initial_scale_value >> - Split pkt_per_line and eol_byte_num changes to a separate patch >> - Moved pclk_per_line calculation to hdisplay adjustment in `if (dsc)` >> block of dsi_update_dsc_timing() >> >> Changes in v3: >> - Split pclk_per_intf calculation into a separate patch >> - Added slice_width check to dsi_timing_setup >> - Used MSM DSC helper to calculate total_bytes_per_intf >> >> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> >> --- >> drivers/gpu/drm/msm/dsi/dsi_host.c | 13 ++++++++++--- >> 1 file changed, 10 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c >> b/drivers/gpu/drm/msm/dsi/dsi_host.c >> index 74d38f90398a..6a6218a9655f 100644 >> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c >> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c >> @@ -28,6 +28,7 @@ >> #include "dsi.xml.h" >> #include "sfpb.xml.h" >> #include "dsi_cfg.h" >> +#include "msm_dsc_helper.h" >> #include "msm_kms.h" >> #include "msm_gem.h" >> #include "phy/dsi_phy.h" >> @@ -848,7 +849,7 @@ static void dsi_update_dsc_timing(struct >> msm_dsi_host *msm_host, bool is_cmd_mod >> /* first calculate dsc parameters and then program >> * compress mode registers >> */ >> - slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width); >> + slice_per_intf = msm_dsc_get_slice_per_intf(dsc, hdisplay); >> /* >> * If slice_count is greater than slice_per_intf >> @@ -858,7 +859,7 @@ static void dsi_update_dsc_timing(struct >> msm_dsi_host *msm_host, bool is_cmd_mod >> if (dsc->slice_count > slice_per_intf) >> dsc->slice_count = 1; >> - total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf; >> + total_bytes_per_intf = msm_dsc_get_bytes_per_intf(dsc, hdisplay); >> eol_byte_num = total_bytes_per_intf % 3; >> pkt_per_line = slice_per_intf / dsc->slice_count; >> @@ -936,6 +937,12 @@ static void dsi_timing_setup(struct msm_dsi_host >> *msm_host, bool is_bonded_dsi) >> return; >> } >> + if (!dsc->slice_width || (mode->hdisplay < dsc->slice_width)) { >> + pr_err("DSI: invalid slice width %d (pic_width: %d)\n", >> + dsc->slice_width, mode->hdisplay); >> + return; >> + } > > This is not the "use of MSM and DRM DSC helper methods" and thus should > be moved to a separate patch. Hi Dmitry, Acked. Thanks, Jessica Zhang > >> + >> dsc->pic_width = mode->hdisplay; >> dsc->pic_height = mode->vdisplay; >> DBG("Mode %dx%d\n", dsc->pic_width, dsc->pic_height); >> @@ -1759,7 +1766,7 @@ static int dsi_populate_dsc_params(struct >> msm_dsi_host *msm_host, struct drm_dsc >> return ret; >> } >> - dsc->initial_scale_value = 32; >> + drm_dsc_set_initial_scale_value(dsc); >> dsc->line_buf_depth = dsc->bits_per_component + 1; >> return drm_dsc_compute_rc_parameters(dsc); >> > > -- > With best wishes > Dmitry >
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 74d38f90398a..6a6218a9655f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -28,6 +28,7 @@ #include "dsi.xml.h" #include "sfpb.xml.h" #include "dsi_cfg.h" +#include "msm_dsc_helper.h" #include "msm_kms.h" #include "msm_gem.h" #include "phy/dsi_phy.h" @@ -848,7 +849,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod /* first calculate dsc parameters and then program * compress mode registers */ - slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width); + slice_per_intf = msm_dsc_get_slice_per_intf(dsc, hdisplay); /* * If slice_count is greater than slice_per_intf @@ -858,7 +859,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod if (dsc->slice_count > slice_per_intf) dsc->slice_count = 1; - total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf; + total_bytes_per_intf = msm_dsc_get_bytes_per_intf(dsc, hdisplay); eol_byte_num = total_bytes_per_intf % 3; pkt_per_line = slice_per_intf / dsc->slice_count; @@ -936,6 +937,12 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) return; } + if (!dsc->slice_width || (mode->hdisplay < dsc->slice_width)) { + pr_err("DSI: invalid slice width %d (pic_width: %d)\n", + dsc->slice_width, mode->hdisplay); + return; + } + dsc->pic_width = mode->hdisplay; dsc->pic_height = mode->vdisplay; DBG("Mode %dx%d\n", dsc->pic_width, dsc->pic_height); @@ -1759,7 +1766,7 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc return ret; } - dsc->initial_scale_value = 32; + drm_dsc_set_initial_scale_value(dsc); dsc->line_buf_depth = dsc->bits_per_component + 1; return drm_dsc_compute_rc_parameters(dsc);
Use MSM and DRM DSC helper methods to configure DSC for DSI. Changes in V2: - *_calculate_initial_scale_value --> *_set_initial_scale_value - Split pkt_per_line and eol_byte_num changes to a separate patch - Moved pclk_per_line calculation to hdisplay adjustment in `if (dsc)` block of dsi_update_dsc_timing() Changes in v3: - Split pclk_per_intf calculation into a separate patch - Added slice_width check to dsi_timing_setup - Used MSM DSC helper to calculate total_bytes_per_intf Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> --- drivers/gpu/drm/msm/dsi/dsi_host.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)