diff options
| author | Vinod Koul <vinod.koul@intel.com> | 2010-11-22 10:33:28 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-29 19:13:32 (GMT) |
| commit | 964c6975e8a4314c451d420f1cb54880ab535433 (patch) | |
| tree | 4fb6508faa63a638d5fbd44f4f4674b426619039 /drivers/staging/intel_sst/intel_sst_drv_interface.c | |
| parent | 951c44e0dbfaa580d5b4fb13427ab93ee252636a (diff) | |
| download | linux-964c6975e8a4314c451d420f1cb54880ab535433.tar.xz | |
Staging: sst: Add runtime PM support
This adds runtime PM support for audio driver.
This also fixes LPA audio mode for moorestown platform
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/intel_sst/intel_sst_drv_interface.c')
| -rw-r--r-- | drivers/staging/intel_sst/intel_sst_drv_interface.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/staging/intel_sst/intel_sst_drv_interface.c b/drivers/staging/intel_sst/intel_sst_drv_interface.c index 9ecbff6..f91c914 100644 --- a/drivers/staging/intel_sst/intel_sst_drv_interface.c +++ b/drivers/staging/intel_sst/intel_sst_drv_interface.c @@ -32,6 +32,7 @@ #include <linux/pci.h> #include <linux/fs.h> #include <linux/firmware.h> +#include <linux/pm_runtime.h> #include "intel_sst.h" #include "intel_sst_ioctl.h" #include "intel_sst_fw_ipc.h" @@ -310,12 +311,15 @@ int sst_open_pcm_stream(struct snd_sst_params *str_param) struct stream_info *str_info; int retval; + pm_runtime_get_sync(&sst_drv_ctx->pci->dev); + if (sst_drv_ctx->sst_state == SST_SUSPENDED) { - /*LPE is suspended, resume it before proceding*/ + /* LPE is suspended, resume it before proceding*/ pr_debug("Resuming from Suspended state\n"); retval = intel_sst_resume(sst_drv_ctx->pci); if (retval) { pr_err("Resume Failed = %#x, abort\n", retval); + pm_runtime_put(&sst_drv_ctx->pci->dev); return retval; } } @@ -325,20 +329,25 @@ int sst_open_pcm_stream(struct snd_sst_params *str_param) retval = sst_download_fw(); if (retval) { pr_err("FW download fail %x, abort\n", retval); + pm_runtime_put(&sst_drv_ctx->pci->dev); return retval; } send_intial_rx_timeslot(); } - if (!str_param) + if (!str_param) { + pm_runtime_put(&sst_drv_ctx->pci->dev); return -EINVAL; + } retval = sst_get_stream(str_param); if (retval > 0) { sst_drv_ctx->stream_cnt++; str_info = &sst_drv_ctx->streams[retval]; str_info->src = MAD_DRV; - } + } else + pm_runtime_put(&sst_drv_ctx->pci->dev); + return retval; } @@ -364,6 +373,7 @@ int sst_close_pcm_stream(unsigned int str_id) stream->period_elapsed = NULL; sst_drv_ctx->stream_cnt--; pr_debug("sst: will call runtime put now\n"); + pm_runtime_put(&sst_drv_ctx->pci->dev); return 0; } |