diff mbox series

[07/10] drm/display/dsc: include the rest of pre-SCR parameters

Message ID 20230228113342.2051425-8-dmitry.baryshkov@linaro.org
State New
Headers show
Series [01/10] drm/i915/dsc: change DSC param tables to follow the DSC model | expand

Commit Message

Dmitry Baryshkov Feb. 28, 2023, 11:33 a.m. UTC 
DSC model contains pre-SCR RC parameters for other bpp/bpc combinations,
include them here for completeness.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/display/drm_dsc_helper.c | 72 ++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

Comments

Dmitry Baryshkov March 7, 2023, 1:37 p.m. UTC | #1 
On 28/02/2023 18:31, Jani Nikula wrote:
> On Tue, 28 Feb 2023, Dmitry Baryshkov <dmitry.baryshkov@linaro.org> wrote:
>> DSC model contains pre-SCR RC parameters for other bpp/bpc combinations,
>> include them here for completeness.
> 
> Need to run now, note to self:
> 
> Does i915 use the arrays to limit the bpp/bpc combos supported by
> hardware? Do we need to add separate limiting in i915.

There is already a limitation in intel_dsc_compute_params(): the driver 
uses DRM_DSC_1_1_PRE_SCR only in a limited amount of cases (bpp 8 or 12, 
bpc 8, 10 or 12). But thanks, I noticed a bug there.

> 
> BR,
> Jani.
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/display/drm_dsc_helper.c b/drivers/gpu/drm/display/drm_dsc_helper.c
index 51794b40526a..1612536014ea 100644
--- a/drivers/gpu/drm/display/drm_dsc_helper.c
+++ b/drivers/gpu/drm/display/drm_dsc_helper.c
@@ -327,6 +327,16 @@  struct rc_parameters_data {
 #define DSC_BPP(bpp)	((bpp) << 4)
 
 static const struct rc_parameters_data rc_parameters_pre_scr[] = {
+{ DSC_BPP(6), 8,
+	/* 6BPP/8BPC */
+	{ 683, 15, 6144, 3, 13, 11, 11, {
+		{ 0, 2, 0 }, { 1, 4, -2 }, { 3, 6, -2 }, { 4, 6, -4 },
+		{ 5, 7, -6 }, { 5, 7, -6 }, { 6, 7, -6 }, { 6, 8, -8 },
+		{ 7, 9, -8 }, { 8, 10, -10 }, { 9, 11, -10 }, { 10, 12, -12 },
+		{ 10, 13, -12 }, { 12, 14, -12 }, { 15, 15, -12 }
+		}
+	}
+},
 { DSC_BPP(8), 8,
 	/* 8BPP/8BPC */
 	{ 512, 12, 6144, 3, 12, 11, 11, {
@@ -362,6 +372,37 @@  static const struct rc_parameters_data rc_parameters_pre_scr[] = {
 		}
 	}
 },
+{ DSC_BPP(10), 8,
+	/* 10BPP/8BPC */
+	{ 410, 12, 5632, 3, 12, 11, 11, {
+		{ 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 },
+		{ 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
+		{ 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 11, -10 },
+		{ 5, 12, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
+		}
+	}
+},
+{ DSC_BPP(10), 10,
+	/* 10BPP/10BPC */
+	{ 410, 12, 5632, 7, 16, 15, 15, {
+		{ 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 },
+		{ 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
+		{ 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 15, -10 },
+		{ 9, 16, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
+		}
+	}
+},
+{ DSC_BPP(10), 12,
+	/* 10BPP/12BPC */
+	{ 410, 12, 5632, 11, 20, 19, 19, {
+		{ 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 },
+		{ 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
+		{ 11, 17, -8 }, { 11, 17, -10 }, { 13, 18, -10 },
+		{ 13, 19, -10 }, { 13, 20, -12 }, { 15, 21, -12 },
+		{ 21, 23, -12 }
+		}
+	}
+},
 { DSC_BPP(12), 8,
 	/* 12BPP/8BPC */
 	{ 341, 15, 2048, 3, 12, 11, 11, {
@@ -393,6 +434,37 @@  static const struct rc_parameters_data rc_parameters_pre_scr[] = {
 		}
 	}
 },
+{ DSC_BPP(15), 8,
+	/* 15BPP/8BPC */
+	{ 273, 15, 2048, 3, 12, 11, 11, {
+		{ 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 },
+		{ 1, 2, 2 }, { 1, 3, 0 }, { 1, 4, -2 }, { 2, 4, -4 },
+		{ 3, 4, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 5, 7, -10 },
+		{ 5, 8, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
+		}
+	}
+},
+{ DSC_BPP(15), 10,
+	/* 15BPP/10BPC */
+	{ 273, 15, 2048, 7, 16, 15, 15, {
+		{ 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 },
+		{ 5, 6, 2 }, { 5, 7, 0 }, { 5, 8, -2 }, { 6, 8, -4 },
+		{ 7, 8, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 9, 11, -10 },
+		{ 9, 12, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
+		}
+	}
+},
+{ DSC_BPP(15), 12,
+	/* 15BPP/12BPC */
+	{ 273, 15, 2048, 11, 20, 19, 19, {
+		{ 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 },
+		{ 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 },
+		{ 11, 12, -6 }, { 11, 13, -8 }, { 12, 14, -10 },
+		{ 13, 15, -10 }, { 13, 16, -12 }, { 15, 21, -12 },
+		{ 21, 23, -12 }
+		}
+	}
+},
 { /* sentinel */ }
 };