diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/sdio.c')
-rw-r--r-- | drivers/net/wireless/ath/ath6kl/sdio.c | 140 |
1 files changed, 87 insertions, 53 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c index 9475e2d..4febee7 100644 --- a/drivers/net/wireless/ath/ath6kl/sdio.c +++ b/drivers/net/wireless/ath/ath6kl/sdio.c @@ -49,11 +49,13 @@ struct ath6kl_sdio { /* scatter request list head */ struct list_head scat_req; + /* Avoids disabling irq while the interrupts being handled */ + struct mutex mtx_irq; + spinlock_t scat_lock; bool scatter_enabled; bool is_disabled; - atomic_t irq_handling; const struct sdio_device_id *id; struct work_struct wr_async_work; struct list_head wr_asyncq; @@ -460,8 +462,7 @@ static void ath6kl_sdio_irq_handler(struct sdio_func *func) ath6kl_dbg(ATH6KL_DBG_SDIO, "irq\n"); ar_sdio = sdio_get_drvdata(func); - atomic_set(&ar_sdio->irq_handling, 1); - + mutex_lock(&ar_sdio->mtx_irq); /* * Release the host during interrups so we can pick it back up when * we process commands. @@ -470,7 +471,7 @@ static void ath6kl_sdio_irq_handler(struct sdio_func *func) status = ath6kl_hif_intr_bh_handler(ar_sdio->ar); sdio_claim_host(ar_sdio->func); - atomic_set(&ar_sdio->irq_handling, 0); + mutex_unlock(&ar_sdio->mtx_irq); WARN_ON(status && status != -ECANCELED); } @@ -578,17 +579,14 @@ static void ath6kl_sdio_irq_disable(struct ath6kl *ar) sdio_claim_host(ar_sdio->func); - /* Mask our function IRQ */ - while (atomic_read(&ar_sdio->irq_handling)) { - sdio_release_host(ar_sdio->func); - schedule_timeout(HZ / 10); - sdio_claim_host(ar_sdio->func); - } + mutex_lock(&ar_sdio->mtx_irq); ret = sdio_release_irq(ar_sdio->func); if (ret) ath6kl_err("Failed to release sdio irq: %d\n", ret); + mutex_unlock(&ar_sdio->mtx_irq); + sdio_release_host(ar_sdio->func); } @@ -772,7 +770,6 @@ static int ath6kl_sdio_config(struct ath6kl *ar) if (ret) { ath6kl_err("Set sdio block size %d failed: %d)\n", HIF_MBOX_BLOCK_SIZE, ret); - sdio_release_host(func); goto out; } @@ -782,7 +779,7 @@ out: return ret; } -static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) +static int ath6kl_set_sdio_pm_caps(struct ath6kl *ar) { struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); struct sdio_func *func = ar_sdio->func; @@ -793,60 +790,95 @@ static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) ath6kl_dbg(ATH6KL_DBG_SUSPEND, "sdio suspend pm_caps 0x%x\n", flags); - if (!(flags & MMC_PM_KEEP_POWER) || - (ar->conf_flags & ATH6KL_CONF_SUSPEND_CUTPOWER)) { - /* as host doesn't support keep power we need to cut power */ - return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_CUTPOWER, - NULL); - } + if (!(flags & MMC_PM_WAKE_SDIO_IRQ) || + !(flags & MMC_PM_KEEP_POWER)) + return -EINVAL; ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); if (ret) { - printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n", - ret); + ath6kl_err("set sdio keep pwr flag failed: %d\n", ret); return ret; } - if (!(flags & MMC_PM_WAKE_SDIO_IRQ)) - goto deepsleep; - /* sdio irq wakes up host */ + ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); + if (ret) + ath6kl_err("set sdio wake irq flag failed: %d\n", ret); + + return ret; +} + +static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + struct sdio_func *func = ar_sdio->func; + mmc_pm_flag_t flags; + int ret; if (ar->state == ATH6KL_STATE_SCHED_SCAN) { + ath6kl_dbg(ATH6KL_DBG_SUSPEND, "sched scan is in progress\n"); + + ret = ath6kl_set_sdio_pm_caps(ar); + if (ret) + goto cut_pwr; + ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_SCHED_SCAN, NULL); - if (ret) { - ath6kl_warn("Schedule scan suspend failed: %d", ret); - return ret; - } + if (ret) + goto cut_pwr; + + return 0; + } + + if (ar->suspend_mode == WLAN_POWER_STATE_WOW || + (!ar->suspend_mode && wow)) { - ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); + ret = ath6kl_set_sdio_pm_caps(ar); if (ret) - ath6kl_warn("set sdio wake irq flag failed: %d\n", ret); + goto cut_pwr; - return ret; + ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_WOW, wow); + if (ret) + goto cut_pwr; + + return 0; } - if (wow) { + if (ar->suspend_mode == WLAN_POWER_STATE_DEEP_SLEEP || + !ar->suspend_mode) { + + flags = sdio_get_host_pm_caps(func); + if (!(flags & MMC_PM_KEEP_POWER)) + goto cut_pwr; + + ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); + if (ret) + goto cut_pwr; + /* - * The host sdio controller is capable of keep power and - * sdio irq wake up at this point. It's fine to continue - * wow suspend operation. + * Workaround to support Deep Sleep with MSM, set the host pm + * flag as MMC_PM_WAKE_SDIO_IRQ to allow SDCC deiver to disable + * the sdc2_clock and internally allows MSM to enter + * TCXO shutdown properly. */ - ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_WOW, wow); - if (ret) - return ret; + if ((flags & MMC_PM_WAKE_SDIO_IRQ)) { + ret = sdio_set_host_pm_flags(func, + MMC_PM_WAKE_SDIO_IRQ); + if (ret) + goto cut_pwr; + } - ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); + ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_DEEPSLEEP, + NULL); if (ret) - ath6kl_err("set sdio wake irq flag failed: %d\n", ret); + goto cut_pwr; - return ret; + return 0; } -deepsleep: - return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_DEEPSLEEP, NULL); +cut_pwr: + return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_CUTPOWER, NULL); } static int ath6kl_sdio_resume(struct ath6kl *ar) @@ -1253,6 +1285,7 @@ static int ath6kl_sdio_probe(struct sdio_func *func, spin_lock_init(&ar_sdio->scat_lock); spin_lock_init(&ar_sdio->wr_async_lock); mutex_init(&ar_sdio->dma_buffer_mutex); + mutex_init(&ar_sdio->mtx_irq); INIT_LIST_HEAD(&ar_sdio->scat_req); INIT_LIST_HEAD(&ar_sdio->bus_req_freeq); @@ -1263,7 +1296,7 @@ static int ath6kl_sdio_probe(struct sdio_func *func, for (count = 0; count < BUS_REQUEST_MAX_NUM; count++) ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]); - ar = ath6kl_core_alloc(&ar_sdio->func->dev); + ar = ath6kl_core_create(&ar_sdio->func->dev); if (!ar) { ath6kl_err("Failed to alloc ath6kl core\n"); ret = -ENOMEM; @@ -1293,7 +1326,7 @@ static int ath6kl_sdio_probe(struct sdio_func *func, return ret; err_core_alloc: - ath6kl_core_free(ar_sdio->ar); + ath6kl_core_destroy(ar_sdio->ar); err_dma: kfree(ar_sdio->dma_buffer); err_hif: @@ -1316,6 +1349,7 @@ static void ath6kl_sdio_remove(struct sdio_func *func) cancel_work_sync(&ar_sdio->wr_async_work); ath6kl_core_cleanup(ar_sdio->ar); + ath6kl_core_destroy(ar_sdio->ar); kfree(ar_sdio->dma_buffer); kfree(ar_sdio); @@ -1332,7 +1366,7 @@ static const struct sdio_device_id ath6kl_sdio_devices[] = { MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices); static struct sdio_driver ath6kl_sdio_driver = { - .name = "ath6kl", + .name = "ath6kl_sdio", .id_table = ath6kl_sdio_devices, .probe = ath6kl_sdio_probe, .remove = ath6kl_sdio_remove, @@ -1362,19 +1396,19 @@ MODULE_AUTHOR("Atheros Communications, Inc."); MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices"); MODULE_LICENSE("Dual BSD/GPL"); -MODULE_FIRMWARE(AR6003_HW_2_0_OTP_FILE); -MODULE_FIRMWARE(AR6003_HW_2_0_FIRMWARE_FILE); -MODULE_FIRMWARE(AR6003_HW_2_0_PATCH_FILE); +MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_OTP_FILE); +MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_PATCH_FILE); MODULE_FIRMWARE(AR6003_HW_2_0_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE); -MODULE_FIRMWARE(AR6003_HW_2_1_1_OTP_FILE); -MODULE_FIRMWARE(AR6003_HW_2_1_1_FIRMWARE_FILE); -MODULE_FIRMWARE(AR6003_HW_2_1_1_PATCH_FILE); +MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_OTP_FILE); +MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_PATCH_FILE); MODULE_FIRMWARE(AR6003_HW_2_1_1_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE); -MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6004_HW_1_0_FW_DIR "/" AR6004_HW_1_0_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE); -MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6004_HW_1_1_FW_DIR "/" AR6004_HW_1_1_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE); |