diff options
Diffstat (limited to 'drivers/gpu/drm/vc4')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 1f13e0f00089..8cc84395f4cb 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1741,8 +1741,14 @@ static int vc4_hdmi_cec_enable(struct cec_adapter *adap) struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); /* clock period in microseconds */ const u32 usecs = 1000000 / CEC_CLOCK_FREQ; - u32 val = HDMI_READ(HDMI_CEC_CNTRL_5); + u32 val; + int ret; + + ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev); + if (ret) + return ret; + val = HDMI_READ(HDMI_CEC_CNTRL_5); val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET | VC4_HDMI_CEC_CNT_TO_4700_US_MASK | VC4_HDMI_CEC_CNT_TO_4500_US_MASK); @@ -1785,6 +1791,8 @@ static int vc4_hdmi_cec_disable(struct cec_adapter *adap) 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; } |