linux-kernel - [PATCH] drm/msm/rd: Add chip-id

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Date:   Fri, 14 Jan 2022 10:57:42 -0800
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/msm/rd: Add chip-id

From: Rob Clark <robdclark@...omium.org>

For newer devices which deprecate gpu-id and do matching based on
chip-id, we need this information in cmdstream dumps so that the
decoding tools know how to decode them.

Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 drivers/gpu/drm/msm/msm_rd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index 81432ec07012..7e4d6460719e 100644
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -62,6 +62,7 @@ enum rd_sect_type {
 	RD_FRAG_SHADER,
 	RD_BUFFER_CONTENTS,
 	RD_GPU_ID,
+	RD_CHIP_ID,
 };
 
 #define BUF_SZ 512  /* should be power of 2 */
@@ -202,6 +203,9 @@ static int rd_open(struct inode *inode, struct file *file)
 
 	rd_write_section(rd, RD_GPU_ID, &gpu_id, sizeof(gpu_id));
 
+	gpu->funcs->get_param(gpu, MSM_PARAM_CHIP_ID, &val);
+	rd_write_section(rd, RD_CHIP_ID, &val, sizeof(val));
+
 out:
 	mutex_unlock(&gpu->lock);
 	return ret;
-- 
2.34.1