diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch b/target/linux/bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch deleted file mode 100644 index cacb29d17a..0000000000 --- a/target/linux/bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch +++ /dev/null @@ -1,45 +0,0 @@ -From ea4d08578d2e002ce01a2f6913c78fbff8195985 Mon Sep 17 00:00:00 2001 -From: Maxime Ripard <maxime@cerno.tech> -Date: Tue, 29 Jun 2021 11:41:57 +0200 -Subject: [PATCH] drm/vc4: hdmi: Make sure the device is powered with - CEC - -Similarly to what we encountered with the detect hook with DRM, nothing -actually prevents any of the CEC callback from being run while the HDMI -output is disabled. - -However, this is an issue since any register access to the controller -when it's powered down will result in a silent hang. - -Let's make sure we run the runtime_pm hooks when the CEC adapter is -opened and closed by the userspace to avoid that issue. - -Fixes: 15b4511a4af6 ("drm/vc4: add HDMI CEC support") -Signed-off-by: Maxime Ripard <maxime@cerno.tech> ---- - drivers/gpu/drm/vc4/vc4_hdmi.c | 7 +++++++ - 1 file changed, 7 insertions(+) - ---- a/drivers/gpu/drm/vc4/vc4_hdmi.c -+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c -@@ -1761,6 +1761,11 @@ static int vc4_hdmi_cec_enable(struct ce - /* clock period in microseconds */ - const u32 usecs = 1000000 / CEC_CLOCK_FREQ; - u32 val = HDMI_READ(HDMI_CEC_CNTRL_5); -+ int ret; -+ -+ ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev); -+ if (ret) -+ return ret; - - val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET | - VC4_HDMI_CEC_CNT_TO_4700_US_MASK | -@@ -1804,6 +1809,8 @@ static int vc4_hdmi_cec_disable(struct c - HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) | - VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); - -+ pm_runtime_put(&vc4_hdmi->pdev->dev); -+ - return 0; - } - |