| Message ID | 20250115151714.3665211-4-mitulkumar.ajitkumar.golani@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Check Scaler and DSC Prefill Latency Against Vblank | expand |
On 1/15/2025 8:47 PM, Mitul Golani wrote: > Refactor max scaling factor computation into a reusable > function for scalers. > > --v2: > - Add missing comment. [Ankit] > > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com> LGTM. Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> > --- > drivers/gpu/drm/i915/display/skl_scaler.c | 70 +++++++++++++---------- > 1 file changed, 41 insertions(+), 29 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c > index 12efa4008027..a832cdccd9fa 100644 > --- a/drivers/gpu/drm/i915/display/skl_scaler.c > +++ b/drivers/gpu/drm/i915/display/skl_scaler.c > @@ -319,6 +319,44 @@ static int intel_allocate_scaler(struct intel_crtc_scaler_state *scaler_state, > return -1; > } > > +static void > +calculate_max_scale(struct intel_crtc *crtc, > + bool is_yuv_semiplanar, > + int scaler_id, > + int *max_hscale, int *max_vscale) > +{ > + struct intel_display *display = to_intel_display(crtc); > + > + /* > + * FIXME: When two scalers are needed, but only one of > + * them needs to downscale, we should make sure that > + * the one that needs downscaling support is assigned > + * as the first scaler, so we don't reject downscaling > + * unnecessarily. > + */ > + > + if (DISPLAY_VER(display) >= 14) { > + /* > + * On versions 14 and up, only the first > + * scaler supports a vertical scaling factor > + * of more than 1.0, while a horizontal > + * scaling factor of 3.0 is supported. > + */ > + *max_hscale = 0x30000 - 1; > + > + if (scaler_id == 0) > + *max_vscale = 0x30000 - 1; > + else > + *max_vscale = 0x10000; > + } else if (DISPLAY_VER(display) >= 10 || !is_yuv_semiplanar) { > + *max_hscale = 0x30000 - 1; > + *max_vscale = 0x30000 - 1; > + } else { > + *max_hscale = 0x20000 - 1; > + *max_vscale = 0x20000 - 1; > + } > +} > + > static int intel_atomic_setup_scaler(struct intel_crtc_state *crtc_state, > int num_scalers_need, struct intel_crtc *crtc, > const char *name, int idx, > @@ -388,35 +426,9 @@ static int intel_atomic_setup_scaler(struct intel_crtc_state *crtc_state, > const struct drm_rect *dst = &plane_state->uapi.dst; > int hscale, vscale, max_vscale, max_hscale; > > - /* > - * FIXME: When two scalers are needed, but only one of > - * them needs to downscale, we should make sure that > - * the one that needs downscaling support is assigned > - * as the first scaler, so we don't reject downscaling > - * unnecessarily. > - */ > - > - if (DISPLAY_VER(display) >= 14) { > - /* > - * On versions 14 and up, only the first > - * scaler supports a vertical scaling factor > - * of more than 1.0, while a horizontal > - * scaling factor of 3.0 is supported. > - */ > - max_hscale = 0x30000 - 1; > - if (*scaler_id == 0) > - max_vscale = 0x30000 - 1; > - else > - max_vscale = 0x10000; > - > - } else if (DISPLAY_VER(display) >= 10 || > - !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) { > - max_hscale = 0x30000 - 1; > - max_vscale = 0x30000 - 1; > - } else { > - max_hscale = 0x20000 - 1; > - max_vscale = 0x20000 - 1; > - } > + calculate_max_scale(crtc, > + intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier), > + *scaler_id, &max_hscale, &max_vscale); > > /* > * FIXME: We should change the if-else block above to
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c index 12efa4008027..a832cdccd9fa 100644 --- a/drivers/gpu/drm/i915/display/skl_scaler.c +++ b/drivers/gpu/drm/i915/display/skl_scaler.c @@ -319,6 +319,44 @@ static int intel_allocate_scaler(struct intel_crtc_scaler_state *scaler_state, return -1; } +static void +calculate_max_scale(struct intel_crtc *crtc, + bool is_yuv_semiplanar, + int scaler_id, + int *max_hscale, int *max_vscale) +{ + struct intel_display *display = to_intel_display(crtc); + + /* + * FIXME: When two scalers are needed, but only one of + * them needs to downscale, we should make sure that + * the one that needs downscaling support is assigned + * as the first scaler, so we don't reject downscaling + * unnecessarily. + */ + + if (DISPLAY_VER(display) >= 14) { + /* + * On versions 14 and up, only the first + * scaler supports a vertical scaling factor + * of more than 1.0, while a horizontal + * scaling factor of 3.0 is supported. + */ + *max_hscale = 0x30000 - 1; + + if (scaler_id == 0) + *max_vscale = 0x30000 - 1; + else + *max_vscale = 0x10000; + } else if (DISPLAY_VER(display) >= 10 || !is_yuv_semiplanar) { + *max_hscale = 0x30000 - 1; + *max_vscale = 0x30000 - 1; + } else { + *max_hscale = 0x20000 - 1; + *max_vscale = 0x20000 - 1; + } +} + static int intel_atomic_setup_scaler(struct intel_crtc_state *crtc_state, int num_scalers_need, struct intel_crtc *crtc, const char *name, int idx, @@ -388,35 +426,9 @@ static int intel_atomic_setup_scaler(struct intel_crtc_state *crtc_state, const struct drm_rect *dst = &plane_state->uapi.dst; int hscale, vscale, max_vscale, max_hscale; - /* - * FIXME: When two scalers are needed, but only one of - * them needs to downscale, we should make sure that - * the one that needs downscaling support is assigned - * as the first scaler, so we don't reject downscaling - * unnecessarily. - */ - - if (DISPLAY_VER(display) >= 14) { - /* - * On versions 14 and up, only the first - * scaler supports a vertical scaling factor - * of more than 1.0, while a horizontal - * scaling factor of 3.0 is supported. - */ - max_hscale = 0x30000 - 1; - if (*scaler_id == 0) - max_vscale = 0x30000 - 1; - else - max_vscale = 0x10000; - - } else if (DISPLAY_VER(display) >= 10 || - !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) { - max_hscale = 0x30000 - 1; - max_vscale = 0x30000 - 1; - } else { - max_hscale = 0x20000 - 1; - max_vscale = 0x20000 - 1; - } + calculate_max_scale(crtc, + intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier), + *scaler_id, &max_hscale, &max_vscale); /* * FIXME: We should change the if-else block above to
Refactor max scaling factor computation into a reusable function for scalers. --v2: - Add missing comment. [Ankit] Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com> --- drivers/gpu/drm/i915/display/skl_scaler.c | 70 +++++++++++++---------- 1 file changed, 41 insertions(+), 29 deletions(-)