gpu: nvgpu: scaling driver update

Update scaling driver to support to differnt
clock frameworks.

Bug 200147662

Reviewed-on: http://git-master/r/816929
(cherry picked from commit cbd4cb575fb2d27870089797ff2a8f22540b87e8)

Change-Id: Ie50304b4a593d74bd43b271005cc9616fdb52a6e
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/834748
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
index c1444985..7314d09d 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
@@ -154,6 +154,18 @@ struct gk20a_platform {
         /* Called to check state of device */
         bool (*is_railgated)(struct platform_device *dev);
 
+        /* get supported frequency list */
+        int (*get_clk_freqs)(struct platform_device *pdev,
+                                unsigned long **freqs, int *num_freqs);
+
+        /* clk related supported functions */
+        unsigned long (*clk_get_rate)(struct platform_device *pdev);
+        long (*clk_round_rate)(struct platform_device *pdev,
+                                unsigned long rate);
+        int (*clk_set_rate)(struct platform_device *pdev,
+                                unsigned long rate);
+
+
         /* Postscale callback is called after frequency change */
         void (*postscale)(struct platform_device *pdev,
                           unsigned long freq);