diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch b/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch new file mode 100644 index 0000000000..fb11058c5f --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch @@ -0,0 +1,42 @@ +From e2f73520b94f49c6ef3ae27e6dc899ec855567ab Mon Sep 17 00:00:00 2001 +From: Dom Cobley <popcornmix@gmail.com> +Date: Tue, 13 Apr 2021 14:10:03 +0100 +Subject: [PATCH] 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> +--- + drivers/gpu/drm/vc4/vc4_kms.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -345,6 +345,7 @@ static void vc4_atomic_commit_tail(struc + struct drm_crtc *crtc; + struct vc4_hvs_state *old_hvs_state; + unsigned int channel; ++ struct clk_request *core_req; + int i; + + old_hvs_state = vc4_hvs_get_old_global_state(state); +@@ -389,7 +390,7 @@ static void vc4_atomic_commit_tail(struc + 500000000, + new_hvs_state->core_clock_rate); + +- clk_set_min_rate(hvs->core_clk, core_rate); ++ core_req = clk_request_start(hvs->core_clk, core_rate); + } + + drm_atomic_helper_commit_modeset_disables(dev, state); +@@ -417,7 +418,7 @@ static void vc4_atomic_commit_tail(struc + drm_dbg(dev, "Running the core clock at %lu Hz\n", + new_hvs_state->core_clock_rate); + +- clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate); ++ clk_request_done(core_req); + } + } + |