linux-kernel - [RFC PATCH 2/2] drm/msm/dsi: use new dpu_dsc_populate_dsc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 24 Feb 2023 11:40:47 -0800
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...il.com>,
        <agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
        <andersson@...nel.org>
CC:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        <quic_abhinavk@...cinc.com>, <quic_sbillaka@...cinc.com>,
        <marijn.suijten@...ainline.org>, <freedreno@...ts.freedesktop.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 2/2] drm/msm/dsi: use new dpu_dsc_populate_dsc_config()

use new introduced dpu_dsc_populate_dsc_config() to calculate
and populate drm_dsc_info instead of hard code value.

Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 78 ++++++--------------------------------
 1 file changed, 12 insertions(+), 66 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 31ad193..5f3f84f 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023. Qualcomm Innovation Center, Inc. All rights reserved
  */
 
 #include <linux/clk.h>
@@ -21,7 +22,6 @@
 
 #include <video/mipi_display.h>
 
-#include <drm/display/drm_dsc_helper.h>
 #include <drm/drm_of.h>
 
 #include "dsi.h"
@@ -31,6 +31,7 @@
 #include "msm_kms.h"
 #include "msm_gem.h"
 #include "phy/dsi_phy.h"
+#include "dpu_dsc_helper.h"
 
 #define DSI_RESET_TOGGLE_DELAY_MS 20
 
@@ -1819,29 +1820,8 @@ static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host,
 	return -EINVAL;
 }
 
-static u32 dsi_dsc_rc_buf_thresh[DSC_NUM_BUF_RANGES - 1] = {
-	0x0e, 0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62,
-	0x69, 0x70, 0x77, 0x79, 0x7b, 0x7d, 0x7e
-};
-
-/* only 8bpc, 8bpp added */
-static char min_qp[DSC_NUM_BUF_RANGES] = {
-	0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 13
-};
-
-static char max_qp[DSC_NUM_BUF_RANGES] = {
-	4, 4, 5, 6, 7, 7, 7, 8, 9, 10, 11, 12, 13, 13, 15
-};
-
-static char bpg_offset[DSC_NUM_BUF_RANGES] = {
-	2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12
-};
-
 static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc_config *dsc)
 {
-	int i;
-	u16 bpp = dsc->bits_per_pixel >> 4;
-
 	if (dsc->bits_per_pixel & 0xf) {
 		DRM_DEV_ERROR(&msm_host->pdev->dev, "DSI does not support fractional bits_per_pixel\n");
 		return -EINVAL;
@@ -1852,50 +1832,16 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc
 		return -EOPNOTSUPP;
 	}
 
-	dsc->rc_model_size = 8192;
-	dsc->first_line_bpg_offset = 12;
-	dsc->rc_edge_factor = 6;
-	dsc->rc_tgt_offset_high = 3;
-	dsc->rc_tgt_offset_low = 3;
-	dsc->simple_422 = 0;
-	dsc->convert_rgb = 1;
-	dsc->vbr_enable = 0;
-
-	/* handle only bpp = bpc = 8 */
-	for (i = 0; i < DSC_NUM_BUF_RANGES - 1 ; i++)
-		dsc->rc_buf_thresh[i] = dsi_dsc_rc_buf_thresh[i];
-
-	for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
-		dsc->rc_range_params[i].range_min_qp = min_qp[i];
-		dsc->rc_range_params[i].range_max_qp = max_qp[i];
-		/*
-		 * Range BPG Offset contains two's-complement signed values that fill
-		 * 8 bits, yet the registers and DCS PPS field are only 6 bits wide.
-		 */
-		dsc->rc_range_params[i].range_bpg_offset = bpg_offset[i] & DSC_RANGE_BPG_OFFSET_MASK;
-	}
-
-	dsc->initial_offset = 6144;		/* Not bpp 12 */
-	if (bpp != 8)
-		dsc->initial_offset = 2048;	/* bpp = 12 */
-
-	if (dsc->bits_per_component <= 10)
-		dsc->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
-	else
-		dsc->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
-
-	dsc->initial_xmit_delay = 512;
-	dsc->initial_scale_value = 32;
-	dsc->first_line_bpg_offset = 12;
-	dsc->line_buf_depth = dsc->bits_per_component + 1;
-
-	/* bpc 8 */
-	dsc->flatness_min_qp = 3;
-	dsc->flatness_max_qp = 12;
-	dsc->rc_quant_incr_limit0 = 11;
-	dsc->rc_quant_incr_limit1 = 11;
-
-	return drm_dsc_compute_rc_parameters(dsc);
+	/*
+	 * NOTE:
+	 * dsc->dsc_version_major, dsc->dsc_version_minor
+	 * dsc->bits_per_pixel,
+	 * dsc->bits_per_component,
+	 * dsc->native_422, dsc->native_420
+	 *
+	 * above parameters must be populated
+	 */
+	return dpu_dsc_populate_dsc_config(dsc, 0);
 }
 
 static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project