drm/msm: clarify downstream bus scaling

A few spots in the driver have support for downstream android
CONFIG_MSM_BUS_SCALING.  This is mainly to simplify backporting the
driver for various devices which do not have sufficient upstream
kernel support.  But the intentionally dead code seems to cause
some confusion.  Rename the #define to make this more clear.

Signed-off-by: Rob Clark <robdclark@gmail.com>

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

@@ -19,7 +19,7 @@
 
 #include "adreno_gpu.h"
 
-#if defined(CONFIG_MSM_BUS_SCALING) && !defined(CONFIG_OF)
+#if defined(DOWNSTREAM_CONFIG_MSM_BUS_SCALING) && !defined(CONFIG_OF)
 #  include <mach/kgsl.h>
 #endif
 
@@ -240,7 +240,7 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
 			config.rev = ADRENO_REV(3, 0, 5, 0);
 
 	}
-#  ifdef CONFIG_MSM_BUS_SCALING
+#  ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 	config.bus_scale_table = pdata->bus_scale_table;
 #  endif
 #endif

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

@@ -334,7 +334,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	gpu->fast_rate = config->fast_rate;
 	gpu->slow_rate = config->slow_rate;
 	gpu->bus_freq  = config->bus_freq;
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 	gpu->bus_scale_table = config->bus_scale_table;
 #endif
 

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

@@ -167,7 +167,7 @@ struct adreno_gpu {
 struct adreno_platform_config {
 	struct adreno_rev rev;
 	uint32_t fast_rate, slow_rate, bus_freq;
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 	struct msm_bus_scale_pdata *bus_scale_table;
 #endif
 };

drivers/gpu/drm/msm/mdp/mdp4/mdp4_dtv_encoder.c

@@ -38,7 +38,7 @@ static struct mdp4_kms *get_kms(struct drm_encoder *encoder)
 	return to_mdp4_kms(to_mdp_kms(priv->kms));
 }
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 #include <mach/board.h>
 /* not ironically named at all.. no, really.. */
 static void bs_init(struct mdp4_dtv_encoder *mdp4_dtv_encoder)

drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h

@@ -229,7 +229,7 @@ static inline struct clk *mpd4_lvds_pll_init(struct drm_device *dev)
 }
 #endif
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 static inline int match_dev_name(struct device *dev, void *data)
 {
 	return !strcmp(dev_name(dev), data);

drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c

@@ -38,7 +38,7 @@ static struct mdp4_kms *get_kms(struct drm_encoder *encoder)
 	return to_mdp4_kms(to_mdp_kms(priv->kms));
 }
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 #include <mach/board.h>
 static void bs_init(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder)
 {

drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c

@@ -30,7 +30,7 @@ static struct mdp5_kms *get_kms(struct drm_encoder *encoder)
 	return to_mdp5_kms(to_mdp_kms(priv->kms));
 }
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 #include <mach/board.h>
 #include <linux/msm-bus.h>
 #include <linux/msm-bus-board.h>

drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c

@@ -36,7 +36,7 @@ static struct mdp5_kms *get_kms(struct drm_encoder *encoder)
 	return to_mdp5_kms(to_mdp_kms(priv->kms));
 }
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 #include <mach/board.h>
 #include <mach/msm_bus.h>
 #include <mach/msm_bus_board.h>

drivers/gpu/drm/msm/msm_gpu.c

@@ -24,7 +24,7 @@
  * Power Management:
  */
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 #include <mach/board.h>
 static void bs_init(struct msm_gpu *gpu)
 {

drivers/gpu/drm/msm/msm_gpu.h

@@ -103,7 +103,7 @@ struct msm_gpu {
 	struct clk *ebi1_clk, *grp_clks[5];
 	uint32_t fast_rate, slow_rate, bus_freq;
 
-#ifdef CONFIG_MSM_BUS_SCALING
+#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 	struct msm_bus_scale_pdata *bus_scale_table;
 	uint32_t bsc;
 #endif