diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2013-08-27 13:22:16 +0900 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 13:43:44 -0700 |
| commit | 8af8271fc02dc2a9ab01f2cd8682c9f28b983af0 (patch) | |
| tree | b46697afaa682fb92e75c6dc4579351f7b9fef60 /drivers/video/tegra/dc/hdmi.c | |
| parent | b542cee14620876831f19f7e43690cbd40498514 (diff) | |
tegra: dc: hdmi: allow LP0 wakeup by hotplug GPIO
Introduce a new TEGRA_DC_OUT_HOTPLUG_WAKE_LP0 flag which can be
specified for DC controllers for which we want the HDMI hotplug
GPIO to serve as a LP0 wake source.
Bug 1345127
Change-Id: I9193be6ada4b0eca1c074c4b9a5888e3b0e49150
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-on: http://git-master/r/266365
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Aaron Gamble <jgamble@nvidia.com>
Reviewed-by: Prajakta Gudadhe <pgudadhe@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Diffstat (limited to 'drivers/video/tegra/dc/hdmi.c')
| -rw-r--r-- | drivers/video/tegra/dc/hdmi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/hdmi.c b/drivers/video/tegra/dc/hdmi.c index bf145b9e3c29..5b9e611d1054 100644 --- a/drivers/video/tegra/dc/hdmi.c +++ b/drivers/video/tegra/dc/hdmi.c @@ -959,6 +959,19 @@ static void tegra_dc_hdmi_suspend(struct tegra_dc *dc) struct tegra_dc_hdmi_data *hdmi = tegra_dc_get_outdata(dc); tegra_nvhdcp_suspend(hdmi->nvhdcp); + + if (dc->out->flags & TEGRA_DC_OUT_HOTPLUG_WAKE_LP0) { + int wake_irq = gpio_to_irq(dc->out->hotplug_gpio); + int ret; + + ret = enable_irq_wake(wake_irq); + if (ret < 0) { + dev_err(&dc->ndev->dev, + "%s: Couldn't enable HDMI wakeup, irq=%d, error=%d\n", + __func__, wake_irq, ret); + } + } + rt_mutex_lock(&hdmi->suspend_lock); hdmi->suspended = true; rt_mutex_unlock(&hdmi->suspend_lock); @@ -978,6 +991,9 @@ static void tegra_dc_hdmi_resume(struct tegra_dc *dc) rt_mutex_unlock(&hdmi->suspend_lock); + if (dc->out->flags & TEGRA_DC_OUT_HOTPLUG_WAKE_LP0) + disable_irq_wake(gpio_to_irq(dc->out->hotplug_gpio)); + tegra_nvhdcp_resume(hdmi->nvhdcp); } |