gpu: nvgpu: Register as subdomain of host1x

Add gk20a as a sub power domain of host1x. This enforces keeping
host1x on when using gk20a.

Bug 200003112

Change-Id: I08db595bc7b819d86d33fb98af0d8fb4de369463
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/407543
Reviewed-by: Riham Haidar <rhaidar@nvidia.com>
Tested-by: Riham Haidar <rhaidar@nvidia.com>

1 files changed, 16 insertions, 36 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 0e117b69..f04e9187 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -739,10 +739,10 @@ void gk20a_put_client(struct gk20a *g)
         WARN_ON(g->client_refcount < 0);
 }
 
-static int gk20a_pm_prepare_poweroff(struct device *_dev)
+static int gk20a_pm_prepare_poweroff(struct device *dev)
 {
-        struct platform_device *dev = to_platform_device(_dev);
-        struct gk20a *g = get_gk20a(dev);
+        struct platform_device *pdev = to_platform_device(dev);
+        struct gk20a *g = get_gk20a(pdev);
         int ret = 0;
 
         gk20a_dbg_fn("");
@@ -767,6 +767,7 @@ static int gk20a_pm_prepare_poweroff(struct device *_dev)
 
         /* Disable GPCPLL */
         ret |= gk20a_suspend_clk_support(g);
+
         g->power_on = false;
 
         return ret;
@@ -790,10 +791,10 @@ static void gk20a_detect_chip(struct gk20a *g)
                         g->gpu_characteristics.rev);
 }
 
-static int gk20a_pm_finalize_poweron(struct device *_dev)
+static int gk20a_pm_finalize_poweron(struct device *dev)
 {
-        struct platform_device *dev = to_platform_device(_dev);
-        struct gk20a *g = get_gk20a(dev);
+        struct platform_device *pdev = to_platform_device(dev);
+        struct gk20a *g = get_gk20a(pdev);
         int err, nice_value;
 
         gk20a_dbg_fn("");
@@ -846,7 +847,7 @@ static int gk20a_pm_finalize_poweron(struct device *_dev)
            saving features (blcg/slcg) are enabled. For now, do it here. */
         err = gk20a_init_clk_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a clk");
+                gk20a_err(dev, "failed to init gk20a clk");
                 goto done;
         }
 
@@ -865,49 +866,49 @@ static int gk20a_pm_finalize_poweron(struct device *_dev)
 
         err = gk20a_init_fifo_reset_enable_hw(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to reset gk20a fifo");
+                gk20a_err(dev, "failed to reset gk20a fifo");
                 goto done;
         }
 
         err = gk20a_init_mm_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a mm");
+                gk20a_err(dev, "failed to init gk20a mm");
                 goto done;
         }
 
         err = gk20a_init_pmu_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a pmu");
+                gk20a_err(dev, "failed to init gk20a pmu");
                 goto done;
         }
 
         err = gk20a_init_fifo_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a fifo");
+                gk20a_err(dev, "failed to init gk20a fifo");
                 goto done;
         }
 
         err = gk20a_init_gr_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a gr");
+                gk20a_err(dev, "failed to init gk20a gr");
                 goto done;
         }
 
         err = gk20a_init_pmu_setup_hw2(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a pmu_hw2");
+                gk20a_err(dev, "failed to init gk20a pmu_hw2");
                 goto done;
         }
 
         err = gk20a_init_therm_support(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a therm");
+                gk20a_err(dev, "failed to init gk20a therm");
                 goto done;
         }
 
         err = gk20a_init_gpu_characteristics(g);
         if (err) {
-                gk20a_err(&dev->dev, "failed to init gk20a gpu characteristics");
+                gk20a_err(dev, "failed to init gk20a gpu characteristics");
                 goto done;
         }
 
@@ -1507,27 +1508,6 @@ void gk20a_busy_noresume(struct platform_device *pdev)
         pm_runtime_get_noresume(&pdev->dev);
 }
 
-int gk20a_channel_busy(struct platform_device *pdev)
-{
-        int ret = 0;
-
-        ret = gk20a_platform_channel_busy(pdev);
-        if (ret)
-                return ret;
-
-        ret = gk20a_busy(pdev);
-        if (ret)
-                gk20a_platform_channel_idle(pdev);
-
-        return ret;
-}
-
-void gk20a_channel_idle(struct platform_device *pdev)
-{
-        gk20a_idle(pdev);
-        gk20a_platform_channel_idle(pdev);
-}
-
 int gk20a_busy(struct platform_device *pdev)
 {
         int ret = 0;