drm/vc4: hdmi: Convert to the new clock request API

The new clock request API allows us to increase the rate of the
core clock as required during mode set while decreasing it when
we're done, resulting in a better power-efficiency.

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 5d0974c..48e3dc1 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -313,6 +313,7 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
        struct vc4_hvs *hvs = vc4->hvs;
        struct drm_crtc_state *new_crtc_state;
        struct drm_crtc *crtc;
+       struct clk_request *core_req;
        int i;
 
        for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
@@ -326,7 +327,7 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
        }
 
        if (vc4->hvs && vc4->hvs->hvs5)
-               clk_set_min_rate(hvs->core_clk, 500000000);
+               core_req = clk_request_start(hvs->core_clk, 500000000);
 
        drm_atomic_helper_wait_for_fences(dev, state, false);
 
@@ -358,7 +359,7 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state)
        drm_atomic_helper_commit_cleanup_done(state);
 
        if (vc4->hvs && vc4->hvs->hvs5)
-               clk_set_min_rate(hvs->core_clk, 0);
+               clk_request_done(core_req);
 
        drm_atomic_state_put(state);