From 964c6975e8a4314c451d420f1cb54880ab535433 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Mon, 22 Nov 2010 10:33:28 +0000 Subject: [PATCH] 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 Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/staging/intel_sst/intel_sst.c | 43 ++++++++++++++++++++-- .../staging/intel_sst/intel_sst_app_interface.c | 13 ++++++- drivers/staging/intel_sst/intel_sst_common.h | 1 + .../staging/intel_sst/intel_sst_drv_interface.c | 16 ++++++-- drivers/staging/intel_sst/intel_sst_dsp.c | 3 +- drivers/staging/intel_sst/intel_sst_ipc.c | 1 + 6 files changed, 69 insertions(+), 8 deletions(-) diff --git a/drivers/staging/intel_sst/intel_sst.c b/drivers/staging/intel_sst/intel_sst.c index 0ba6742d923..bd92549893a 100644 --- a/drivers/staging/intel_sst/intel_sst.c +++ b/drivers/staging/intel_sst/intel_sst.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include "intel_sst.h" #include "intel_sst_ioctl.h" @@ -320,6 +321,9 @@ static int __devinit intel_sst_probe(struct pci_dev *pci, } } sst_drv_ctx->lpe_stalled = 0; + pm_runtime_set_active(&pci->dev); + pm_runtime_enable(&pci->dev); + pm_runtime_allow(&pci->dev); pr_debug("...successfully done!!!\n"); return ret; @@ -408,8 +412,10 @@ int intel_sst_suspend(struct pci_dev *pci, pm_message_t state) pr_debug("intel_sst_suspend called\n"); - if (sst_drv_ctx->pb_streams != 0 || sst_drv_ctx->cp_streams != 0) - return -EPERM; + if (sst_drv_ctx->stream_cnt) { + pr_err("active streams,not able to suspend\n"); + return -EBUSY; + } /*Assert RESET on LPE Processor*/ csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); csr.full = csr.full | 0x2; @@ -439,7 +445,7 @@ int intel_sst_resume(struct pci_dev *pci) pr_debug("intel_sst_resume called\n"); if (sst_drv_ctx->sst_state != SST_SUSPENDED) { pr_err("SST is not in suspended state\n"); - return -EPERM; + return 0; } sst_drv_ctx = pci_get_drvdata(pci); pci_set_power_state(pci, PCI_D0); @@ -454,6 +460,34 @@ int intel_sst_resume(struct pci_dev *pci) return 0; } +static int intel_sst_runtime_suspend(struct device *dev) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + pr_debug("runtime_suspend called\n"); + return intel_sst_suspend(pci_dev, PMSG_SUSPEND); +} + +static int intel_sst_runtime_resume(struct device *dev) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + pr_debug("runtime_resume called\n"); + return intel_sst_resume(pci_dev); +} + +static int intel_sst_runtime_idle(struct device *dev) +{ + pr_debug("runtime_idle called\n"); + if (sst_drv_ctx->stream_cnt == 0 && sst_drv_ctx->am_cnt == 0) + pm_schedule_suspend(dev, SST_SUSPEND_DELAY); + return -EBUSY; +} + +static const struct dev_pm_ops intel_sst_pm = { + .runtime_suspend = intel_sst_runtime_suspend, + .runtime_resume = intel_sst_runtime_resume, + .runtime_idle = intel_sst_runtime_idle, +}; + /* PCI Routines */ static struct pci_device_id intel_sst_ids[] = { { PCI_VDEVICE(INTEL, SST_MRST_PCI_ID), 3}, @@ -470,6 +504,9 @@ static struct pci_driver driver = { #ifdef CONFIG_PM .suspend = intel_sst_suspend, .resume = intel_sst_resume, + .driver = { + .pm = &intel_sst_pm, + }, #endif }; diff --git a/drivers/staging/intel_sst/intel_sst_app_interface.c b/drivers/staging/intel_sst/intel_sst_app_interface.c index c1ca39ef364..4b316ccab41 100644 --- a/drivers/staging/intel_sst/intel_sst_app_interface.c +++ b/drivers/staging/intel_sst/intel_sst_app_interface.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #ifdef CONFIG_MRST_RAR_HANDLER @@ -103,8 +104,10 @@ int intel_sst_open(struct inode *i_node, struct file *file_ptr) unsigned int retval; mutex_lock(&sst_drv_ctx->stream_lock); + pm_runtime_get_sync(&sst_drv_ctx->pci->dev); retval = intel_sst_check_device(); if (retval) { + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); return retval; } @@ -113,6 +116,7 @@ int intel_sst_open(struct inode *i_node, struct file *file_ptr) struct ioctl_pvt_data *data = kzalloc(sizeof(struct ioctl_pvt_data), GFP_KERNEL); if (!data) { + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); return -ENOMEM; } @@ -125,6 +129,7 @@ int intel_sst_open(struct inode *i_node, struct file *file_ptr) pr_debug("pvt_id handle = %d!\n", data->pvt_id); } else { retval = -EUSERS; + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); } return retval; @@ -147,8 +152,10 @@ int intel_sst_open_cntrl(struct inode *i_node, struct file *file_ptr) /* audio manager open */ mutex_lock(&sst_drv_ctx->stream_lock); + pm_runtime_get_sync(&sst_drv_ctx->pci->dev); retval = intel_sst_check_device(); if (retval) { + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); return retval; } @@ -157,8 +164,10 @@ int intel_sst_open_cntrl(struct inode *i_node, struct file *file_ptr) sst_drv_ctx->am_cnt++; pr_debug("AM handle opened...\n"); file_ptr->private_data = NULL; - } else + } else { retval = -EACCES; + pm_runtime_put(&sst_drv_ctx->pci->dev); + } mutex_unlock(&sst_drv_ctx->stream_lock); return retval; @@ -181,6 +190,7 @@ int intel_sst_release(struct inode *i_node, struct file *file_ptr) mutex_lock(&sst_drv_ctx->stream_lock); sst_drv_ctx->encoded_cnt--; sst_drv_ctx->stream_cnt--; + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); free_stream_context(data->str_id); kfree(data); @@ -192,6 +202,7 @@ int intel_sst_release_cntrl(struct inode *i_node, struct file *file_ptr) /* audio manager close */ mutex_lock(&sst_drv_ctx->stream_lock); sst_drv_ctx->am_cnt--; + pm_runtime_put(&sst_drv_ctx->pci->dev); mutex_unlock(&sst_drv_ctx->stream_lock); pr_debug("AM handle closed\n"); return 0; diff --git a/drivers/staging/intel_sst/intel_sst_common.h b/drivers/staging/intel_sst/intel_sst_common.h index dcc1ebbe1ac..a82882423d2 100644 --- a/drivers/staging/intel_sst/intel_sst_common.h +++ b/drivers/staging/intel_sst/intel_sst_common.h @@ -37,6 +37,7 @@ #define SST_FW_FILENAME_MFLD "fw_sst_082f.bin" #define SST_MRST_PCI_ID 0x080A #define SST_MFLD_PCI_ID 0x082F +#define SST_SUSPEND_DELAY 2000 enum sst_states { SST_FW_LOADED = 1, diff --git a/drivers/staging/intel_sst/intel_sst_drv_interface.c b/drivers/staging/intel_sst/intel_sst_drv_interface.c index 9ecbff60cac..f91c914ba20 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 #include #include +#include #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; } diff --git a/drivers/staging/intel_sst/intel_sst_dsp.c b/drivers/staging/intel_sst/intel_sst_dsp.c index d1b0537cf4b..6e5c9152da9 100644 --- a/drivers/staging/intel_sst/intel_sst_dsp.c +++ b/drivers/staging/intel_sst/intel_sst_dsp.c @@ -51,7 +51,8 @@ static int intel_sst_reset_dsp_mrst(void) union config_status_reg csr; pr_debug("Resetting the DSP in mrst\n"); - csr.full = 0x3a2; + csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); + csr.full |= 0x382; sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); csr.part.strb_cntr_rst = 0; diff --git a/drivers/staging/intel_sst/intel_sst_ipc.c b/drivers/staging/intel_sst/intel_sst_ipc.c index 993c5333e90..5aa92ba9018 100644 --- a/drivers/staging/intel_sst/intel_sst_ipc.c +++ b/drivers/staging/intel_sst/intel_sst_ipc.c @@ -182,6 +182,7 @@ int process_fw_init(struct sst_ipc_msg_wq *msg) sst_send_sound_card_type(); mutex_lock(&sst_drv_ctx->sst_lock); sst_drv_ctx->sst_state = SST_FW_RUNNING; + sst_drv_ctx->lpe_stalled = 0; mutex_unlock(&sst_drv_ctx->sst_lock); pr_debug("FW Version %x.%x\n", init->fw_version.major, init->fw_version.minor); -- 2.11.4.GIT