From 405cfeca3466186c21e24238c47497121e1e4b40 Mon Sep 17 00:00:00 2001
From: Suraj Kandpal <suraj.kandpal@intel.com>
Date: Wed, 5 Jul 2023 10:45:01 +0530
Subject: drm/i915/drm: Fix comment for YCbCr20 qp table declaration
Git-commit: 955009927c72a1389723cabffd6634456057861a
Patch-mainline: v6.6-rc1
References: jsc#PED-3527 jsc#PED-5475 jsc#PED-6068 jsc#PED-6070 jsc#PED-6116 jsc#PED-6120 jsc#PED-5065 jsc#PED-5477 jsc#PED-5511 jsc#PED-6041 jsc#PED-6069 jsc#PED-6071
Fix comment for YCbCr420 qp table declaration of max value
where the min value is 4 and the max value is 12/15/18
depending on bpc.
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230705051502.2568245-3-suraj.kandpal@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_qp_tables.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.c b/drivers/gpu/drm/i915/display/intel_qp_tables.c
index 6e86c0971d24..543cdc46aa1d 100644
--- a/drivers/gpu/drm/i915/display/intel_qp_tables.c
+++ b/drivers/gpu/drm/i915/display/intel_qp_tables.c
@@ -17,13 +17,17 @@
/* from BPP 6 to 36 in steps of 0.5 */
#define RC_RANGE_QP444_12BPC_MAX_NUM_BPP 61
-/* from BPP 6 to 24 in steps of 0.5 */
+/* For YCbCr420 the bits_per_pixel sent in PPS params
+ * is double the target bpp. The below values represent
+ * the target bpp.
+ */
+/* from BPP 4 to 12 in steps of 0.5 */
#define RC_RANGE_QP420_8BPC_MAX_NUM_BPP 17
-/* from BPP 6 to 30 in steps of 0.5 */
+/* from BPP 4 to 15 in steps of 0.5 */
#define RC_RANGE_QP420_10BPC_MAX_NUM_BPP 23
-/* from BPP 6 to 36 in steps of 0.5 */
+/* from BPP 4 to 18 in steps of 0.5 */
#define RC_RANGE_QP420_12BPC_MAX_NUM_BPP 29
/*
--
2.43.0