diff options
| author | Phani Kumar Uppalapati <phaniu@codeaurora.org> | 2015-12-10 16:51:31 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:15:54 -0700 |
| commit | f6c9eb51395ec58e9672f2edb0f0c5cf904f6c77 (patch) | |
| tree | b28d3f81440d36fe17e963097f9dbda9002a63e4 /drivers/misc | |
| parent | 57d7fb0e5f61dbedb8e4609b4538054b9cba3144 (diff) | |
msm: ultrasound: USF stays awake after each event
Give upper layers enough time to turn on screen before
falling back into SUSPEND.
Change-Id: I162f25dffdbbeb783d0bca673d6e6db8de412aac
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/qcom/qdsp6v2/ultrasound/usf.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/misc/qcom/qdsp6v2/ultrasound/usf.c b/drivers/misc/qcom/qdsp6v2/ultrasound/usf.c index 7ac0add368fb..e0323ec70a19 100644 --- a/drivers/misc/qcom/qdsp6v2/ultrasound/usf.c +++ b/drivers/misc/qcom/qdsp6v2/ultrasound/usf.c @@ -22,6 +22,7 @@ #include <linux/uaccess.h> #include <linux/time.h> #include <linux/kmemleak.h> +#include <linux/wakelock.h> #include <sound/apr_audio.h> #include <linux/qdsp6v2/usf.h> #include "q6usm.h" @@ -67,6 +68,9 @@ #define BITS_IN_BYTE 8 +/* Time to stay awake after tx read event (e.g., proximity) */ +#define STAY_AWAKE_AFTER_READ_MSECS 3000 + /* The driver states */ enum usf_state_type { USF_IDLE_STATE, @@ -171,6 +175,8 @@ static const int s_button_map[] = { /* The opened devices container */ static int s_opened_devs[MAX_DEVS_NUMBER]; +static struct wakeup_source usf_wakeup_source; + #define USF_NAME_PREFIX "usf_" #define USF_NAME_PREFIX_SIZE 4 @@ -435,6 +441,10 @@ static void usf_tx_cb(uint32_t opcode, uint32_t token, switch (opcode) { case Q6USM_EVENT_READ_DONE: + pr_debug("%s: acquiring %d msec wake lock\n", __func__, + STAY_AWAKE_AFTER_READ_MSECS); + __pm_wakeup_event(&usf_wakeup_source, + STAY_AWAKE_AFTER_READ_MSECS); if (token == USM_WRONG_TOKEN) usf_xx->usf_state = USF_ERROR_STATE; usf_xx->new_region = token; @@ -2285,6 +2295,7 @@ static int usf_open(struct inode *inode, struct file *file) pr_err("%s:usf allocation failed\n", __func__); return -ENOMEM; } + wakeup_source_init(&usf_wakeup_source, "usf"); file->private_data = usf; usf->dev_ind = dev_ind; @@ -2312,6 +2323,7 @@ static int usf_release(struct inode *inode, struct file *file) s_opened_devs[usf->dev_ind] = 0; + wakeup_source_trash(&usf_wakeup_source); kfree(usf); pr_debug("%s: release exit\n", __func__); return 0; |