On Fri, Sep 27, 2024 at 08:52:35PM +0530, Ankit Nautiyal wrote: > Currently compressed max_bpp limitations for small joiner ram, big joiner > etc are intermingled. Seprate these limitations into separate functions. > > v2: Use num_joined_pipes in small joiner ram helper and other minor > fixes. (Ville) > > Signed-off-by: Ankit Nautiyal <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]> > --- > drivers/gpu/drm/i915/display/intel_dp.c | 46 +++++++++++++++++++------ > 1 file changed, 36 insertions(+), 10 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c > b/drivers/gpu/drm/i915/display/intel_dp.c > index f2a2541c1091..29f8cb9c4dd0 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -859,25 +859,51 @@ u32 intel_dp_dsc_nearest_valid_bpp(struct > drm_i915_private *i915, u32 bpp, u32 p > return bits_per_pixel; > } > > +static int bigjoiner_interface_bits(struct intel_display *display) > +{ > + return DISPLAY_VER(display) >= 14 ? 36 : 24; > +} > + > +static u32 bigjoiner_bw_max_bpp(struct intel_display *display, u32 > mode_clock) > +{ > + u32 max_bpp; > + /* With bigjoiner multiple dsc engines are used in parallel so PPC is 2 > */ > + int ppc = 2; > + > + max_bpp = display->cdclk.max_cdclk_freq * ppc * > bigjoiner_interface_bits(display) / > + intel_dp_mode_to_fec_clock(mode_clock); > + > + return max_bpp; > +} > + > +static u32 small_joiner_ram_max_bpp(struct intel_display *display, > + u32 mode_hdisplay, > + int num_joined_pipes) > +{ > + struct drm_i915_private *i915 = to_i915(display->drm); > + u32 max_bpp; > + > + /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */ > + max_bpp = small_joiner_ram_size_bits(i915) / mode_hdisplay; > + > + max_bpp *= num_joined_pipes; > + > + return max_bpp; > +} > + > static > u32 get_max_compressed_bpp_with_joiner(struct drm_i915_private *i915, > u32 mode_clock, u32 mode_hdisplay, > int num_joined_pipes) > { > + struct intel_display *display = to_intel_display(&i915->drm); > u32 max_bpp_small_joiner_ram; > > - /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */ > - max_bpp_small_joiner_ram = small_joiner_ram_size_bits(i915) / > mode_hdisplay; > + max_bpp_small_joiner_ram = small_joiner_ram_max_bpp(display, > mode_hdisplay, > + num_joined_pipes); > > if (num_joined_pipes == 2) { > - int bigjoiner_interface_bits = DISPLAY_VER(i915) >= 14 ? 36 : > 24; > - /* With bigjoiner multiple dsc engines are used in parallel so > PPC is 2 */ > - int ppc = 2; > - u32 max_bpp_bigjoiner = > - i915->display.cdclk.max_cdclk_freq * ppc * > bigjoiner_interface_bits / > - intel_dp_mode_to_fec_clock(mode_clock); > - > - max_bpp_small_joiner_ram *= 2; > + u32 max_bpp_bigjoiner = bigjoiner_bw_max_bpp(display, > mode_clock); > > return min(max_bpp_small_joiner_ram, max_bpp_bigjoiner); > } > -- > 2.45.2 -- Ville Syrjälä Intel
