target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch

   1 From e2f73520b94f49c6ef3ae27e6dc899ec855567ab Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Tue, 13 Apr 2021 14:10:03 +0100
   4 Subject: [PATCH] drm/vc4: hdmi: Convert to the new clock request API
   5
   6 The new clock request API allows us to increase the rate of the
   7 core clock as required during mode set while decreasing it when
   8 we're done, resulting in a better power-efficiency.
   9
  10 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  11 ---
  12  drivers/gpu/drm/vc4/vc4_kms.c | 5 +++--
  13  1 file changed, 3 insertions(+), 2 deletions(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_kms.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_kms.c
  17 @@ -345,6 +345,7 @@ static void vc4_atomic_commit_tail(struc
  18         struct drm_crtc *crtc;
  19         struct vc4_hvs_state *old_hvs_state;
  20         unsigned int channel;
  21 +       struct clk_request *core_req;
  22         int i;
  23
  24         old_hvs_state = vc4_hvs_get_old_global_state(state);
  25 @@ -389,7 +390,7 @@ static void vc4_atomic_commit_tail(struc
  26                                                 500000000,
  27                                                 new_hvs_state->core_clock_rate);
  28
  29 -               clk_set_min_rate(hvs->core_clk, core_rate);
  30 +               core_req = clk_request_start(hvs->core_clk, core_rate);
  31         }
  32
  33         drm_atomic_helper_commit_modeset_disables(dev, state);
  34 @@ -417,7 +418,7 @@ static void vc4_atomic_commit_tail(struc
  35                 drm_dbg(dev, "Running the core clock at %lu Hz\n",
  36                         new_hvs_state->core_clock_rate);
  37
  38 -               clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
  39 +               clk_request_done(core_req);
  40         }
  41  }
  42