diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2017-08-02 10:54:05 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-10-12 10:49:14 +0300 |
| commit | a141a29612d7c0ba95a4e36a236d51c2b86e0e2b (patch) | |
| tree | aa74c18eaf5583cfecc06f7f001e8cb9b1025bec | |
| parent | 1d54ecf230029dccc97e26a520ed95b9b95ae0eb (diff) | |
omapdrm: hdmi4: refcount hdmi_power_on/off_core
The hdmi_power_on/off_core functions can be called multiple times:
when the HPD changes and when the HDMI CEC support needs to power
the HDMI core.
So use a counter to know when to really power on or off the HDMI core.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/hdmi4.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 91c2a1e8b324..fd1b252c6e6d 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -124,9 +124,12 @@ static int hdmi_power_on_core(struct omap_dss_device *dssdev) { int r; + if (hdmi.core.core_pwr_cnt++) + return 0; + r = regulator_enable(hdmi.vdda_reg); if (r) - return r; + goto err_reg_enable; r = hdmi_runtime_get(); if (r) @@ -143,12 +146,17 @@ static int hdmi_power_on_core(struct omap_dss_device *dssdev) err_runtime_get: regulator_disable(hdmi.vdda_reg); +err_reg_enable: + hdmi.core.core_pwr_cnt--; return r; } static void hdmi_power_off_core(struct omap_dss_device *dssdev) { + if (--hdmi.core.core_pwr_cnt) + return; + hdmi.core_enabled = false; hdmi_runtime_put(); |