[PATCH v2 3/3] drm/vc4: hvs: Convert to the new clock request API

[Maxime Ripard]

From: Dom Cobley <popcorn...@gmail.com>

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 <popcorn...@gmail.com>
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_kms.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index f0b3e4cf5bce..3550ae9f782e 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -341,6 +341,7 @@ static void vc4_atomic_commit_tail(struct drm_atomic_state 
*state)
        struct drm_crtc_state *new_crtc_state;
        struct drm_crtc *crtc;
        struct vc4_hvs_state *old_hvs_state;
+       struct clk_request *core_req;
        int i;
 
        for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
@@ -354,7 +355,7 @@ static void vc4_atomic_commit_tail(struct drm_atomic_state 
*state)
        }
 
        if (vc4->hvs->hvs5)
-               clk_set_min_rate(hvs->core_clk, 500000000);
+               core_req = clk_request_start(hvs->core_clk, 500000000);
 
        old_hvs_state = vc4_hvs_get_old_global_state(state);
        if (!old_hvs_state)
@@ -399,7 +400,7 @@ static void vc4_atomic_commit_tail(struct drm_atomic_state 
*state)
        drm_atomic_helper_cleanup_planes(dev, state);
 
        if (vc4->hvs->hvs5)
-               clk_set_min_rate(hvs->core_clk, 0);
+               clk_request_done(core_req);
 }
 
 static int vc4_atomic_commit_setup(struct drm_atomic_state *state)
-- 
2.31.1