| Message ID | 20230911050549.763538-5-mitulkumar.ajitkumar.golani@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add DSC fractional bpp support | expand |
> Subject: [PATCH 4/8] drm/i915/audio : Consider fractional vdsc bpp while > computing tu_data > > From: Ankit Nautiyal <ankit.k.nautiyal@intel.com> > > MTL+ supports fractional compressed bits_per_pixel, with precision of > 1/16. This compressed bpp is stored in U6.4 format. > Accommodate the precision during calculation of transfer unit data for > hblank_early calculation. > > v2: > -Fixed tu_data calculation while dealing with U6.4 format. (Stan) > LGTM. Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com> > Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> > --- > drivers/gpu/drm/i915/display/intel_audio.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_audio.c > b/drivers/gpu/drm/i915/display/intel_audio.c > index aa93ccd6c2aa..cfbaa7006905 100644 > --- a/drivers/gpu/drm/i915/display/intel_audio.c > +++ b/drivers/gpu/drm/i915/display/intel_audio.c > @@ -521,14 +521,14 @@ static unsigned int calc_hblank_early_prog(struct > intel_encoder *encoder, > unsigned int link_clks_available, link_clks_required; > unsigned int tu_data, tu_line, link_clks_active; > unsigned int h_active, h_total, hblank_delta, pixel_clk; > - unsigned int fec_coeff, cdclk, vdsc_bpp; > + unsigned int fec_coeff, cdclk, vdsc_bppx16; > unsigned int link_clk, lanes; > unsigned int hblank_rise; > > h_active = crtc_state->hw.adjusted_mode.crtc_hdisplay; > h_total = crtc_state->hw.adjusted_mode.crtc_htotal; > pixel_clk = crtc_state->hw.adjusted_mode.crtc_clock; > - vdsc_bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); > + vdsc_bppx16 = crtc_state->dsc.compressed_bpp_x16; > cdclk = i915->display.cdclk.hw.cdclk; > /* fec= 0.972261, using rounding multiplier of 1000000 */ > fec_coeff = 972261; > @@ -536,10 +536,10 @@ static unsigned int calc_hblank_early_prog(struct > intel_encoder *encoder, > lanes = crtc_state->lane_count; > > drm_dbg_kms(&i915->drm, "h_active = %u link_clk = %u :" > - "lanes = %u vdsc_bpp = %u cdclk = %u\n", > - h_active, link_clk, lanes, vdsc_bpp, cdclk); > + "lanes = %u vdsc_bppx16 = %u cdclk = %u\n", > + h_active, link_clk, lanes, vdsc_bppx16, cdclk); > > - if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bpp || !cdclk)) > + if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bppx16 || > +!cdclk)) > return 0; > > link_clks_available = (h_total - h_active) * link_clk / pixel_clk - 28; @@ > -551,8 +551,8 @@ static unsigned int calc_hblank_early_prog(struct > intel_encoder *encoder, > hblank_delta = DIV64_U64_ROUND_UP(mul_u32_u32(5 * > (link_clk + cdclk), pixel_clk), > mul_u32_u32(link_clk, > cdclk)); > > - tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bpp * 8, 1000000), > - mul_u32_u32(link_clk * lanes, fec_coeff)); > + tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bppx16 * 8, > 1000000), > + mul_u32_u32(link_clk * lanes * 16, fec_coeff)); > tu_line = div64_u64(h_active * mul_u32_u32(link_clk, fec_coeff), > mul_u32_u32(64 * pixel_clk, 1000000)); > link_clks_active = (tu_line - 1) * 64 + tu_data; > -- > 2.25.1
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index aa93ccd6c2aa..cfbaa7006905 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -521,14 +521,14 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, unsigned int link_clks_available, link_clks_required; unsigned int tu_data, tu_line, link_clks_active; unsigned int h_active, h_total, hblank_delta, pixel_clk; - unsigned int fec_coeff, cdclk, vdsc_bpp; + unsigned int fec_coeff, cdclk, vdsc_bppx16; unsigned int link_clk, lanes; unsigned int hblank_rise; h_active = crtc_state->hw.adjusted_mode.crtc_hdisplay; h_total = crtc_state->hw.adjusted_mode.crtc_htotal; pixel_clk = crtc_state->hw.adjusted_mode.crtc_clock; - vdsc_bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); + vdsc_bppx16 = crtc_state->dsc.compressed_bpp_x16; cdclk = i915->display.cdclk.hw.cdclk; /* fec= 0.972261, using rounding multiplier of 1000000 */ fec_coeff = 972261; @@ -536,10 +536,10 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, lanes = crtc_state->lane_count; drm_dbg_kms(&i915->drm, "h_active = %u link_clk = %u :" - "lanes = %u vdsc_bpp = %u cdclk = %u\n", - h_active, link_clk, lanes, vdsc_bpp, cdclk); + "lanes = %u vdsc_bppx16 = %u cdclk = %u\n", + h_active, link_clk, lanes, vdsc_bppx16, cdclk); - if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bpp || !cdclk)) + if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bppx16 || !cdclk)) return 0; link_clks_available = (h_total - h_active) * link_clk / pixel_clk - 28; @@ -551,8 +551,8 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, hblank_delta = DIV64_U64_ROUND_UP(mul_u32_u32(5 * (link_clk + cdclk), pixel_clk), mul_u32_u32(link_clk, cdclk)); - tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bpp * 8, 1000000), - mul_u32_u32(link_clk * lanes, fec_coeff)); + tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bppx16 * 8, 1000000), + mul_u32_u32(link_clk * lanes * 16, fec_coeff)); tu_line = div64_u64(h_active * mul_u32_u32(link_clk, fec_coeff), mul_u32_u32(64 * pixel_clk, 1000000)); link_clks_active = (tu_line - 1) * 64 + tu_data;