diff options
| author | Ravindra Lokhande <rlokhande@nvidia.com> | 2010-09-27 12:53:41 -0500 |
|---|---|---|
| committer | Iliyan Malchev <malchev@google.com> | 2010-11-02 19:14:21 -0700 |
| commit | 61ac344745d3ab8d143906fb774c529c9301e574 (patch) | |
| tree | 8c336e112ea731de9684565722d1686b0535693f /arch/arm/mach-tegra/tegra_spdif_audio.c | |
| parent | 3e759e2c910e26e4a76f272e0411ebe1c88e4187 (diff) | |
[ARM] tegra_spdif_audio: add suspend wakelocks
Signed-off-by: Iliyan Malchev <malchev@google.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra_spdif_audio.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra_spdif_audio.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra_spdif_audio.c b/arch/arm/mach-tegra/tegra_spdif_audio.c index 9c6ae5b6f41a..9f719e392deb 100644 --- a/arch/arm/mach-tegra/tegra_spdif_audio.c +++ b/arch/arm/mach-tegra/tegra_spdif_audio.c @@ -44,6 +44,7 @@ #include <linux/ktime.h> #include <linux/sysfs.h> #include <linux/pm_qos_params.h> +#include <linux/wakelock.h> #include <linux/delay.h> #include <linux/tegra_audio.h> @@ -88,6 +89,8 @@ struct audio_stream { struct tegra_dma_req dma_req; struct pm_qos_request_list pm_qos; + struct wake_lock wake_lock; + char wake_lock_name[100]; }; struct spdif_pio_stats { @@ -162,6 +165,7 @@ static inline struct audio_driver_state *ads_from_out( static inline void prevent_suspend(struct audio_stream *as) { pr_debug("%s\n", __func__); + wake_lock(&as->wake_lock); pm_qos_update_request(&as->pm_qos, 0); } @@ -169,6 +173,7 @@ static inline void allow_suspend(struct audio_stream *as) { pr_debug("%s\n", __func__); pm_qos_update_request(&as->pm_qos, PM_QOS_DEFAULT_VALUE); + wake_unlock(&as->wake_lock); } #define I2S_I2S_FIFO_TX_BUSY I2S_I2S_STATUS_FIFO1_BSY @@ -986,6 +991,8 @@ static int tegra_spdif_out_release(struct inode *inode, struct file *file) if (!ads->out.opened) { stop_playback_if_necessary(&ads->out); + if (wake_lock_active(&ads->out.wake_lock)) + pr_err("%s: wake lock is still held!\n", __func__); if (kfifo_len(&ads->out.fifo)) pr_err("%s: output fifo is not empty (%d bytes left)\n", __func__, kfifo_len(&ads->out.fifo)); @@ -1336,6 +1343,10 @@ static int tegra_spdif_probe(struct platform_device *pdev) pm_qos_add_request(&state->out.pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); + 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) { |