43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From e2f73520b94f49c6ef3ae27e6dc899ec855567ab Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Tue, 13 Apr 2021 14:10:03 +0100
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Subject: [PATCH] drm/vc4: hdmi: Convert to the new clock request API
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The new clock request API allows us to increase the rate of the
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core clock as required during mode set while decreasing it when
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we're done, resulting in a better power-efficiency.
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_kms.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_kms.c
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@@ -345,6 +345,7 @@ static void vc4_atomic_commit_tail(struc
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struct drm_crtc *crtc;
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struct vc4_hvs_state *old_hvs_state;
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unsigned int channel;
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+ struct clk_request *core_req;
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int i;
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old_hvs_state = vc4_hvs_get_old_global_state(state);
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@@ -389,7 +390,7 @@ static void vc4_atomic_commit_tail(struc
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500000000,
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new_hvs_state->core_clock_rate);
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- clk_set_min_rate(hvs->core_clk, core_rate);
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+ core_req = clk_request_start(hvs->core_clk, core_rate);
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}
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drm_atomic_helper_commit_modeset_disables(dev, state);
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@@ -417,7 +418,7 @@ static void vc4_atomic_commit_tail(struc
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drm_dbg(dev, "Running the core clock at %lu Hz\n",
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new_hvs_state->core_clock_rate);
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- clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
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+ clk_request_done(core_req);
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}
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}
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