diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra_spdif_audio.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra_spdif_audio.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra_spdif_audio.c b/arch/arm/mach-tegra/tegra_spdif_audio.c index c23ebdf2fe1f..3765633606cd 100644 --- a/arch/arm/mach-tegra/tegra_spdif_audio.c +++ b/arch/arm/mach-tegra/tegra_spdif_audio.c @@ -43,6 +43,7 @@ #include <linux/io.h> #include <linux/ktime.h> #include <linux/sysfs.h> +#include <linux/wakelock.h> #include <linux/delay.h> #include <linux/tegra_audio.h> #include <linux/pm.h> @@ -83,6 +84,8 @@ struct audio_stream { spinlock_t dma_req_lock; struct work_struct allow_suspend_work; + struct wake_lock wake_lock; + char wake_lock_name[100]; }; struct audio_driver_state { @@ -147,6 +150,7 @@ static inline void prevent_suspend(struct audio_stream *as) { pr_debug("%s\n", __func__); cancel_work_sync(&as->allow_suspend_work); + wake_lock(&as->wake_lock); } static void allow_suspend_worker(struct work_struct *w) @@ -154,6 +158,7 @@ static void allow_suspend_worker(struct work_struct *w) struct audio_stream *as = container_of(w, struct audio_stream, allow_suspend_work); pr_debug("%s\n", __func__); + wake_unlock(&as->wake_lock); } static inline void allow_suspend(struct audio_stream *as) @@ -1104,6 +1109,10 @@ static int tegra_spdif_probe(struct platform_device *pdev) return rc; INIT_WORK(&state->out.allow_suspend_work, allow_suspend_worker); + snprintf(state->out.wake_lock_name, sizeof(state->out.wake_lock_name), + "tegra-audio-spdif"); + wake_lock_init(&state->out.wake_lock, WAKE_LOCK_SUSPEND, + state->out.wake_lock_name); if (request_irq(state->irq, spdif_interrupt, IRQF_DISABLED, state->pdev->name, state) < 0) { |