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Merge "ASoC: wcd_cpe_core: Add support for CPE restart"

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Linux Build Service Account 2014-07-12 21:07:53 -07:00 committed by Gerrit - the friendly Code Review server
commit f6b2a48f98
2 changed files with 687 additions and 93 deletions
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718
sound/soc/codecs/wcd_cpe_core.c
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62
sound/soc/codecs/wcd_cpe_core.h
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@ -14,6 +14,19 @@
#define WCD_CPE_LAB_MAX_LATENCY 250
#define WCD_CPE_MAD_SLIM_CHANNEL 140
/* Indicates CPE block is ready for image re-download */
#define WCD_CPE_BLK_READY (1 << 0)
/* Indicates the underlying bus is ready */
#define WCD_CPE_BUS_READY (1 << 1)
/*
* only when the underlying bus and CPE block both are ready,
* the state will be ready to download
*/
#define WCD_CPE_READY_TO_DLOAD \
(WCD_CPE_BLK_READY | WCD_CPE_BUS_READY)
struct wcd_cpe_cdc_cb {
/* codec provided callback to enable RCO */
int (*cdc_clk_en) (struct snd_soc_codec *, bool);
@ -24,6 +37,24 @@ struct wcd_cpe_cdc_cb {
int (*slimtx_lab_en)(struct snd_soc_codec *codec, int event);
};
enum wcd_cpe_ssr_state_event {
/* Indicates that CPE is currently active */
WCD_CPE_ACTIVE = 0,
/* Event from underlying bus notifying bus is down */
WCD_CPE_BUS_DOWN_EVENT,
/* Event from CPE block, notifying CPE is down */
WCD_CPE_SSR_EVENT,
/* Event from underlying bus notifying bus is up */
WCD_CPE_BUS_UP_EVENT,
};
struct wcd_cpe_ssr_entry {
int offline;
u32 offline_change;
wait_queue_head_t offline_poll_wait;
struct snd_info_entry *entry;
};
struct wcd_cpe_core {
/* handle to cpe services */
void *cpe_handle;
@ -54,6 +85,33 @@ struct wcd_cpe_core {
/* callbacks for codec specific implementation */
struct wcd_cpe_cdc_cb cpe_cdc_cb;
/* work to handle CPE SSR*/
struct work_struct ssr_work;
/* PM handle for suspend mode during SSR */
struct pm_qos_request pm_qos_req;
/* completion event indicating CPE OFFLINE */
struct completion offline_compl;
/* entry into snd card procfs indicating cpe status */
struct wcd_cpe_ssr_entry ssr_entry;
/*
* completion event to signal CPE is
* ready for image re-download
*/
struct completion ready_compl;
/* maintains the status for cpe ssr */
u8 ready_status;
/* Indicate SSR type */
enum wcd_cpe_ssr_state_event ssr_type;
/* mutex to protect cpe ssr status variables */
struct mutex ssr_lock;
};
struct wcd_cpe_params {
@ -67,5 +125,7 @@ struct wcd_cpe_params {
u32 cdc_id;
};
int wcd_cpe_ssr_event(void *core_handle,
enum wcd_cpe_ssr_state_event event);
struct wcd_cpe_core *wcd_cpe_init_and_boot(const char *,
struct snd_soc_codec *, struct wcd_cpe_params *params);
struct snd_soc_codec *, struct wcd_cpe_params *params);