drm/msm/adreno: Switch to chip-id for identifying GPU

Since the revision becomes an opaque identifier with future GPUs, move
away from treating different ranges of bits as having a given meaning.
This means that we need to explicitly list different patch revisions in
the device table.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/549782/

Author: robclark

drivers/gpu/drm/msm/adreno/a4xx_gpu.c

@@ -145,7 +145,7 @@ static void a4xx_enable_hwcg(struct msm_gpu *gpu)
 	gpu_write(gpu, REG_A4XX_RBBM_CLOCK_DELAY_HLSQ, 0x00220000);
 	/* Early A430's have a timing issue with SP/TP power collapse;
 	   disabling HW clock gating prevents it. */
-	if (adreno_is_a430(adreno_gpu) && adreno_gpu->rev.patchid < 2)
+	if (adreno_is_a430(adreno_gpu) && adreno_patchid(adreno_gpu) < 2)
 		gpu_write(gpu, REG_A4XX_RBBM_CLOCK_CTL, 0);
 	else
 		gpu_write(gpu, REG_A4XX_RBBM_CLOCK_CTL, 0xAAAAAAAA);

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

@@ -1770,7 +1770,7 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
 
 	nr_rings = 4;
 
-	if (adreno_cmp_rev(ADRENO_REV(5, 1, 0, ANY_ID), config->rev))
+	if (config->info->revn == 510)
 		nr_rings = 1;
 
 	ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, nr_rings);

drivers/gpu/drm/msm/adreno/a5xx_power.c

@@ -179,7 +179,7 @@ static void a540_lm_setup(struct msm_gpu *gpu)
 
 	/* The battery current limiter isn't enabled for A540 */
 	config = AGC_LM_CONFIG_BCL_DISABLED;
-	config |= adreno_gpu->rev.patchid << AGC_LM_CONFIG_GPU_VERSION_SHIFT;
+	config |= adreno_patchid(adreno_gpu) << AGC_LM_CONFIG_GPU_VERSION_SHIFT;
 
 	/* For now disable GPMU side throttling */
 	config |= AGC_LM_CONFIG_THROTTLE_DISABLE;

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

@@ -790,10 +790,16 @@ static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state)
 	gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0,
 		(1 << 31) | (0xa << 18) | (0xa0));
 
-	chipid = adreno_gpu->rev.core << 24;
-	chipid |= adreno_gpu->rev.major << 16;
-	chipid |= adreno_gpu->rev.minor << 12;
-	chipid |= adreno_gpu->rev.patchid << 8;
+	/*
+	 * Note that the GMU has a slightly different layout for
+	 * chip_id, for whatever reason, so a bit of massaging
+	 * is needed.  The upper 16b are the same, but minor and
+	 * patchid are packed in four bits each with the lower
+	 * 8b unused:
+	 */
+	chipid  = adreno_gpu->chip_id & 0xffff0000;
+	chipid |= (adreno_gpu->chip_id << 4) & 0xf000; /* minor */
+	chipid |= (adreno_gpu->chip_id << 8) & 0x0f00; /* patchid */
 
 	gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid);