gpu: nvgpu: vgpu: Implement clk.get_maxfreq

Modify HAL clk->get_maxfreq() signature to match the one in
clk->set_rate() and clk->get_rate(). It allows support of multiple
clocks.

Implement clk.get_maxfreq operation for vgpu and use it to
fill max_freq field in GPU characteristics query.

JIRA NVGPU-388

Change-Id: I93bfc2aa76e38b8a5e0ac55d87c4e26df6fea77f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1597329
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/clk_vgpu.c b/drivers/gpu/nvgpu/vgpu/clk_vgpu.c
index 39a8e618..e4ad8f68 100644
--- a/drivers/gpu/nvgpu/vgpu/clk_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/clk_vgpu.c
@@ -92,10 +92,18 @@ static int vgpu_clk_set_rate(struct gk20a *g,
         return err;
 }
 
+static unsigned long vgpu_clk_get_maxrate(struct gk20a *g, u32 api_domain)
+{
+        struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
+
+        return priv->constants.max_freq;
+}
+
 void vgpu_init_clk_support(struct gk20a *g)
 {
         g->ops.clk.get_rate = vgpu_clk_get_rate;
         g->ops.clk.set_rate = vgpu_clk_set_rate;
+        g->ops.clk.get_maxrate = vgpu_clk_get_maxrate;
 }
 
 long vgpu_clk_round_rate(struct device *dev, unsigned long rate)