Re: [Intel-gfx] [PATCH 04/11] drm/i915/audio: Consider fractional vdsc bpp while computing tu_data
> 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: > -Fix tu_data calculation while dealing with U6.4 format. (Stan) > > v3: > -Use BPP_X16_FMT to print vdsc bpp. > LGTM. Reviewed-by: Suraj Kandpal > Signed-off-by: Ankit Nautiyal > Reviewed-by: Suraj Kandpal > Reviewed-by: Sui Jingfeng > --- > drivers/gpu/drm/i915/display/intel_audio.c | 16 > 1 file changed, 8 insertions(+), 8 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_audio.c > b/drivers/gpu/drm/i915/display/intel_audio.c > index aa93ccd6c2aa..8796d90c46a6 100644 > --- a/drivers/gpu/drm/i915/display/intel_audio.c > +++ b/drivers/gpu/drm/i915/display/intel_audio.c > @@ -521,25 +521,25 @@ 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 100 */ > fec_coeff = 972261; > link_clk = crtc_state->port_clock; > lanes = crtc_state->lane_count; > > - drm_dbg_kms(>drm, "h_active = %u link_clk = %u :" > - "lanes = %u vdsc_bpp = %u cdclk = %u\n", > - h_active, link_clk, lanes, vdsc_bpp, cdclk); > + drm_dbg_kms(>drm, > + "h_active = %u link_clk = %u : lanes = %u vdsc_bpp = " > BPP_X16_FMT " cdclk = %u\n", > + h_active, link_clk, lanes, BPP_X16_ARGS(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, > 100), > - mul_u32_u32(link_clk * lanes, fec_coeff)); > + tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bppx16 * 8, > 100), > + 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, 100)); > link_clks_active = (tu_line - 1) * 64 + tu_data; > -- > 2.40.1
[Intel-gfx] [PATCH 04/11] drm/i915/audio: Consider fractional vdsc bpp while computing tu_data
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: -Fix tu_data calculation while dealing with U6.4 format. (Stan) v3: -Use BPP_X16_FMT to print vdsc bpp. Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal Reviewed-by: Sui Jingfeng --- drivers/gpu/drm/i915/display/intel_audio.c | 16 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index aa93ccd6c2aa..8796d90c46a6 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -521,25 +521,25 @@ 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 100 */ fec_coeff = 972261; link_clk = crtc_state->port_clock; lanes = crtc_state->lane_count; - drm_dbg_kms(>drm, "h_active = %u link_clk = %u :" - "lanes = %u vdsc_bpp = %u cdclk = %u\n", - h_active, link_clk, lanes, vdsc_bpp, cdclk); + drm_dbg_kms(>drm, + "h_active = %u link_clk = %u : lanes = %u vdsc_bpp = " BPP_X16_FMT " cdclk = %u\n", + h_active, link_clk, lanes, BPP_X16_ARGS(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, 100), - mul_u32_u32(link_clk * lanes, fec_coeff)); + tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bppx16 * 8, 100), + 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, 100)); link_clks_active = (tu_line - 1) * 64 + tu_data; -- 2.40.1
