[PATCH RFC 078/111] staging: etnaviv: remove powerrail support

[Lucas Stach]

From: Russell King <rmk+kernel at arm.linux.org.uk>

Remove the etnaviv specific power rail support, which is mostly disabled
anyway.  This really wants to be using the power domain support instead,
which allows the SoC specifics to be abstracted from the driver, rather
than a home-cooked version of it.

For example, on Dove, it is necessary to go through a specific isolation
and reset sequence when removing and restoring the power to the GPU,
which is something we don't want to have to place into the generic GPU
driver.

Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
 drivers/staging/etnaviv/etnaviv_gpu.c | 47 -----------------------------------
 1 file changed, 47 deletions(-)

diff --git a/drivers/staging/etnaviv/etnaviv_gpu.c b/drivers/staging/etnaviv/etnaviv_gpu.c
index ffecce5236f9..7537ab13a47e 100644
--- a/drivers/staging/etnaviv/etnaviv_gpu.c
+++ b/drivers/staging/etnaviv/etnaviv_gpu.c
@@ -607,45 +607,6 @@ void etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m)
 /*
  * Power Management:
  */
-
-static int enable_pwrrail(struct etnaviv_gpu *gpu)
-{
-#if 0
-	struct drm_device *dev = gpu->drm;
-	int ret = 0;
-
-	if (gpu->gpu_reg) {
-		ret = regulator_enable(gpu->gpu_reg);
-		if (ret) {
-			dev_err(dev->dev, "failed to enable 'gpu_reg': %d\n",
-				ret);
-			return ret;
-		}
-	}
-
-	if (gpu->gpu_cx) {
-		ret = regulator_enable(gpu->gpu_cx);
-		if (ret) {
-			dev_err(dev->dev, "failed to enable 'gpu_cx': %d\n",
-				ret);
-			return ret;
-		}
-	}
-#endif
-	return 0;
-}
-
-static int disable_pwrrail(struct etnaviv_gpu *gpu)
-{
-#if 0
-	if (gpu->gpu_cx)
-		regulator_disable(gpu->gpu_cx);
-	if (gpu->gpu_reg)
-		regulator_disable(gpu->gpu_reg);
-#endif
-	return 0;
-}
-
 static int enable_clk(struct etnaviv_gpu *gpu)
 {
 	if (gpu->clk_core)
@@ -688,10 +649,6 @@ int etnaviv_gpu_pm_resume(struct etnaviv_gpu *gpu)
 
 	DBG("%s", dev_name(gpu->dev));
 
-	ret = enable_pwrrail(gpu);
-	if (ret)
-		return ret;
-
 	ret = enable_clk(gpu);
 	if (ret)
 		return ret;
@@ -717,10 +674,6 @@ int etnaviv_gpu_pm_suspend(struct etnaviv_gpu *gpu)
 	if (ret)
 		return ret;
 
-	ret = disable_pwrrail(gpu);
-	if (ret)
-		return ret;
-
 	return 0;
 }
 
-- 
2.1.4