drm/msm/adreno: Move gbif_halt() to adreno_gpu_func

Move the gbif halt fn to adreno_gpu_func so that we can call different
implementation from common code. This will come handy when we implement
A8x layer.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/689005/
Message-ID: <20251118-kaana-gpu-support-v4-7-86eeb8e93fb6@oss.qualcomm.com>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Author: akhilpo-qcom

drivers/gpu/drm/msm/adreno/a6xx_gmu.c

@@ -1079,7 +1079,7 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
 	/* Halt the gmu cm3 core */
 	gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);
 
-	a6xx_bus_clear_pending_transactions(adreno_gpu, true);
+	adreno_gpu->funcs->bus_halt(adreno_gpu, true);
 
 	/* Reset GPU core blocks */
 	a6xx_gpu_sw_reset(gpu, true);
@@ -1251,7 +1251,7 @@ static void a6xx_gmu_shutdown(struct a6xx_gmu *gmu)
 	if (ret)
 		goto force_off;
 
-	a6xx_bus_clear_pending_transactions(adreno_gpu, a6xx_gpu->hung);
+	adreno_gpu->funcs->bus_halt(adreno_gpu, a6xx_gpu->hung);
 
 	/* tell the GMU we want to slumber */
 	ret = a6xx_gmu_notify_slumber(gmu);

drivers/gpu/drm/msm/adreno/a6xx_gpu.c

@@ -1595,7 +1595,7 @@ static void a6xx_recover(struct msm_gpu *gpu)
 
 	if (adreno_has_gmu_wrapper(adreno_gpu) || adreno_has_rgmu(adreno_gpu)) {
 		/* Drain the outstanding traffic on memory buses */
-		a6xx_bus_clear_pending_transactions(adreno_gpu, true);
+		adreno_gpu->funcs->bus_halt(adreno_gpu, true);
 
 		/* Reset the GPU to a clean state */
 		a6xx_gpu_sw_reset(gpu, true);
@@ -2316,7 +2316,7 @@ static int a6xx_pm_suspend(struct msm_gpu *gpu)
 	mutex_lock(&a6xx_gpu->gmu.lock);
 
 	/* Drain the outstanding traffic on memory buses */
-	a6xx_bus_clear_pending_transactions(adreno_gpu, true);
+	adreno_gpu->funcs->bus_halt(adreno_gpu, true);
 
 	if (adreno_is_a619_holi(adreno_gpu))
 		a6xx_sptprac_disable(gmu);
@@ -2685,6 +2685,7 @@ const struct adreno_gpu_funcs a6xx_gpu_funcs = {
 	},
 	.init = a6xx_gpu_init,
 	.get_timestamp = a6xx_gmu_get_timestamp,
+	.bus_halt = a6xx_bus_clear_pending_transactions,
 };
 
 const struct adreno_gpu_funcs a6xx_gmuwrapper_funcs = {
@@ -2715,6 +2716,7 @@ const struct adreno_gpu_funcs a6xx_gmuwrapper_funcs = {
 	},
 	.init = a6xx_gpu_init,
 	.get_timestamp = a6xx_get_timestamp,
+	.bus_halt = a6xx_bus_clear_pending_transactions,
 };
 
 const struct adreno_gpu_funcs a7xx_gpu_funcs = {
@@ -2747,4 +2749,5 @@ const struct adreno_gpu_funcs a7xx_gpu_funcs = {
 	},
 	.init = a6xx_gpu_init,
 	.get_timestamp = a6xx_gmu_get_timestamp,
+	.bus_halt = a6xx_bus_clear_pending_transactions,
 };

drivers/gpu/drm/msm/adreno/adreno_gpu.h

@@ -77,6 +77,7 @@ struct adreno_gpu_funcs {
 	struct msm_gpu_funcs base;
 	struct msm_gpu *(*init)(struct drm_device *dev);
 	int (*get_timestamp)(struct msm_gpu *gpu, uint64_t *value);
+	void (*bus_halt)(struct adreno_gpu *adreno_gpu, bool gx_off);
 };
 
 struct adreno_reglist {