diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/sdio.c | 130 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/sdio.h | 16 |
2 files changed, 119 insertions, 27 deletions
diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index 184b3545324e..1626976293c7 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -1361,23 +1361,117 @@ static void ath10k_rx_indication_async_work(struct work_struct *work) napi_schedule(&ar->napi); } +static int ath10k_sdio_read_rtc_state(struct ath10k_sdio *ar_sdio, unsigned char *state) +{ + struct ath10k *ar = ar_sdio->ar; + unsigned char rtc_state = 0; + int ret = 0; + + rtc_state = sdio_f0_readb(ar_sdio->func, ATH10K_CIS_RTC_STATE_ADDR, &ret); + if (ret) { + ath10k_warn(ar, "failed to read rtc state: %d\n", ret); + return ret; + } + + *state = rtc_state & 0x3; + + return ret; +} + +static int ath10k_sdio_hif_set_mbox_sleep(struct ath10k *ar, bool enable_sleep) +{ + struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar); + u32 val; + int retry = ATH10K_CIS_READ_RETRY, ret = 0; + unsigned char rtc_state = 0; + + sdio_claim_host(ar_sdio->func); + + ret = ath10k_sdio_read32(ar, ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL, &val); + if (ret) { + ath10k_warn(ar, "failed to read fifo/chip control register: %d\n", + ret); + goto release; + } + + if (enable_sleep) { + val &= ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_OFF; + ar_sdio->mbox_state = SDIO_MBOX_SLEEP_STATE; + } else { + val |= ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_ON; + ar_sdio->mbox_state = SDIO_MBOX_AWAKE_STATE; + } + + ret = ath10k_sdio_write32(ar, ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL, val); + if (ret) { + ath10k_warn(ar, "failed to write to FIFO_TIMEOUT_AND_CHIP_CONTROL: %d", + ret); + } + + if (!enable_sleep) { + do { + udelay(ATH10K_CIS_READ_WAIT_4_RTC_CYCLE_IN_US); + ret = ath10k_sdio_read_rtc_state(ar_sdio, &rtc_state); + + if (ret) { + ath10k_warn(ar, "failed to disable mbox sleep: %d", ret); + break; + } + + ath10k_dbg(ar, ATH10K_DBG_SDIO, "sdio read rtc state: %d\n", + rtc_state); + + if (rtc_state == ATH10K_CIS_RTC_STATE_ON) + break; + + udelay(ATH10K_CIS_XTAL_SETTLE_DURATION_IN_US); + retry--; + } while (retry > 0); + } + +release: + sdio_release_host(ar_sdio->func); + + return ret; +} + +static void ath10k_sdio_sleep_timer_handler(struct timer_list *t) +{ + struct ath10k_sdio *ar_sdio = from_timer(ar_sdio, t, sleep_timer); + + ar_sdio->mbox_state = SDIO_MBOX_REQUEST_TO_SLEEP_STATE; + queue_work(ar_sdio->workqueue, &ar_sdio->wr_async_work); +} + static void ath10k_sdio_write_async_work(struct work_struct *work) { struct ath10k_sdio *ar_sdio = container_of(work, struct ath10k_sdio, wr_async_work); struct ath10k *ar = ar_sdio->ar; struct ath10k_sdio_bus_request *req, *tmp_req; + struct ath10k_mbox_info *mbox_info = &ar_sdio->mbox_info; spin_lock_bh(&ar_sdio->wr_async_lock); list_for_each_entry_safe(req, tmp_req, &ar_sdio->wr_asyncq, list) { list_del(&req->list); spin_unlock_bh(&ar_sdio->wr_async_lock); + + if (req->address >= mbox_info->htc_addr && + ar_sdio->mbox_state == SDIO_MBOX_SLEEP_STATE) { + ath10k_sdio_hif_set_mbox_sleep(ar, false); + mod_timer(&ar_sdio->sleep_timer, jiffies + + msecs_to_jiffies(ATH10K_MIN_SLEEP_INACTIVITY_TIME_MS)); + } + __ath10k_sdio_write_async(ar, req); spin_lock_bh(&ar_sdio->wr_async_lock); } spin_unlock_bh(&ar_sdio->wr_async_lock); + + if (ar_sdio->mbox_state == SDIO_MBOX_REQUEST_TO_SLEEP_STATE) + ath10k_sdio_hif_set_mbox_sleep(ar, true); } static int ath10k_sdio_prep_async_req(struct ath10k *ar, u32 addr, @@ -1517,6 +1611,9 @@ static void ath10k_sdio_hif_power_down(struct ath10k *ar) ath10k_dbg(ar, ATH10K_DBG_BOOT, "sdio power off\n"); + del_timer_sync(&ar_sdio->sleep_timer); + ath10k_sdio_hif_set_mbox_sleep(ar, true); + /* Disable the card */ sdio_claim_host(ar_sdio->func); @@ -1617,33 +1714,6 @@ static int ath10k_sdio_hif_enable_intrs(struct ath10k *ar) return ret; } -static int ath10k_sdio_hif_set_mbox_sleep(struct ath10k *ar, bool enable_sleep) -{ - u32 val; - int ret; - - ret = ath10k_sdio_read32(ar, ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL, &val); - if (ret) { - ath10k_warn(ar, "failed to read fifo/chip control register: %d\n", - ret); - return ret; - } - - if (enable_sleep) - val &= ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_OFF; - else - val |= ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_ON; - - ret = ath10k_sdio_write32(ar, ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL, val); - if (ret) { - ath10k_warn(ar, "failed to write to FIFO_TIMEOUT_AND_CHIP_CONTROL: %d", - ret); - return ret; - } - - return 0; -} - /* HIF diagnostics */ static int ath10k_sdio_hif_diag_read(struct ath10k *ar, u32 address, void *buf, @@ -1749,6 +1819,8 @@ static int ath10k_sdio_hif_start_post(struct ath10k *ar) ar_sdio->swap_mbox = false; } + ath10k_sdio_hif_set_mbox_sleep(ar, true); + return 0; } @@ -2076,6 +2148,8 @@ static int ath10k_sdio_pm_suspend(struct device *device) if (!device_may_wakeup(ar->dev)) return 0; + ath10k_sdio_hif_set_mbox_sleep(ar, true); + pm_flag = MMC_PM_KEEP_POWER; ret = sdio_set_host_pm_flags(func, pm_flag); @@ -2239,6 +2313,8 @@ static int ath10k_sdio_probe(struct sdio_func *func, goto err_free_wq; } + timer_setup(&ar_sdio->sleep_timer, ath10k_sdio_sleep_timer_handler, 0); + return 0; err_free_wq: diff --git a/drivers/net/wireless/ath/ath10k/sdio.h b/drivers/net/wireless/ath/ath10k/sdio.h index 1c987494ad22..29523600887d 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.h +++ b/drivers/net/wireless/ath/ath10k/sdio.h @@ -98,6 +98,20 @@ #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_OFF 0xFFFEFFFF #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_ON 0x10000 +enum sdio_mbox_state { + SDIO_MBOX_UNKNOWN_STATE = 0, + SDIO_MBOX_REQUEST_TO_SLEEP_STATE = 1, + SDIO_MBOX_SLEEP_STATE = 2, + SDIO_MBOX_AWAKE_STATE = 3, +}; + +#define ATH10K_CIS_READ_WAIT_4_RTC_CYCLE_IN_US 125 +#define ATH10K_CIS_RTC_STATE_ADDR 0x1138 +#define ATH10K_CIS_RTC_STATE_ON 0x01 +#define ATH10K_CIS_XTAL_SETTLE_DURATION_IN_US 1500 +#define ATH10K_CIS_READ_RETRY 10 +#define ATH10K_MIN_SLEEP_INACTIVITY_TIME_MS 50 + /* TODO: remove this and use skb->cb instead, much cleaner approach */ struct ath10k_sdio_bus_request { struct list_head list; @@ -218,6 +232,8 @@ struct ath10k_sdio { spinlock_t wr_async_lock; struct work_struct async_work_rx; + struct timer_list sleep_timer; + enum sdio_mbox_state mbox_state; }; static inline struct ath10k_sdio *ath10k_sdio_priv(struct ath10k *ar) |