[PATCH v2 1/4] drm/msm/a2xx: Pass the revision information

[Fabio Estevam]

From: Fabio Estevam <festevam at denx.de>

Commit cc943f43ece7 ("drm/msm/adreno: warn if chip revn is verified
before being set") exposes the need of setting the GPU revision fields
prior to using the adreno_is_xxx() functions:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/msm/adreno/adreno_gpu.h:171 a2xx_gpu_init+0x138/0x184
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.4.0-rc7-next-20230620 #993

Pass the GPU revision information to avoid run-time warning.

Tested on a imx53-qsb board.

Signed-off-by: Fabio Estevam <festevam at denx.de>
---
Changes since v1:
- Make it part of a single patch series.

 drivers/gpu/drm/msm/adreno/a2xx_gpu.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a2xx_gpu.c b/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
index c67089a7ebc1..4e1218462a23 100644
--- a/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
@@ -520,6 +520,8 @@ struct msm_gpu *a2xx_gpu_init(struct drm_device *dev)
 	struct msm_gpu *gpu;
 	struct msm_drm_private *priv = dev->dev_private;
 	struct platform_device *pdev = priv->gpu_pdev;
+	struct adreno_platform_config *config = pdev->dev.platform_data;
+	const struct adreno_info *info;
 	int ret;
 
 	if (!pdev) {
@@ -540,6 +542,23 @@ struct msm_gpu *a2xx_gpu_init(struct drm_device *dev)
 	gpu->perfcntrs = perfcntrs;
 	gpu->num_perfcntrs = ARRAY_SIZE(perfcntrs);
 
+	/*
+	 * We need to know the platform type before calling into adreno_gpu_init
+	 * so that the hw_apriv flag can be correctly set. Snoop into the info
+	 * and grab the revision number
+	 */
+	info = adreno_info(config->rev);
+	if (!info)
+		return ERR_PTR(-EINVAL);
+
+	/* Assign these early so that we can use the is_aXYZ helpers */
+	/* Numeric revision IDs (e.g. 630) */
+	adreno_gpu->revn = info->revn;
+	/* New-style ADRENO_REV()-only */
+	adreno_gpu->rev = info->rev;
+	/* Quirk data */
+	adreno_gpu->info = info;
+
 	if (adreno_is_a20x(adreno_gpu))
 		adreno_gpu->registers = a200_registers;
 	else if (adreno_is_a225(adreno_gpu))
-- 
2.34.1