diff options
author | Ulf Hansson <ulf.hansson@linaro.org> | 2013-10-24 15:58:45 +0200 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-09-09 13:59:08 +0200 |
commit | 7501c4315faf46b088ed4de4d8695a91d7d63869 (patch) | |
tree | 2e377486f7ff322a5b10e4fa4d5f89347125b1be /drivers/mmc/host | |
parent | 215ba3995ae89866a58b8df41136811c665a22b9 (diff) | |
download | linux-7501c4315faf46b088ed4de4d8695a91d7d63869.tar.bz2 |
mmc: tmio: Keep host active while SDIO IRQ is enabled
The host must be kept active to be able to serve SDIO IRQs, thus let's
prevent it from going inactive while SDIO IRQ is enabled.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r-- | drivers/mmc/host/tmio_mmc.h | 1 | ||||
-rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 19 |
2 files changed, 16 insertions, 4 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 100ffe0b2faf..d6ceb1a5e56f 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -101,6 +101,7 @@ struct tmio_mmc_host { struct mutex ios_lock; /* protect set_ios() context */ bool native_hotplug; bool resuming; + bool sdio_irq_enabled; }; int tmio_mmc_host_probe(struct tmio_mmc_host **host, diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index faf0924e71cb..5c2e5a36258a 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -129,15 +129,22 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct tmio_mmc_host *host = mmc_priv(mmc); - if (enable) { + if (enable && !host->sdio_irq_enabled) { + /* Keep device active while SDIO irq is enabled */ + pm_runtime_get_sync(mmc_dev(mmc)); + host->sdio_irq_enabled = true; + host->sdio_irq_mask = TMIO_SDIO_MASK_ALL & ~TMIO_SDIO_STAT_IOIRQ; sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); - } else { + } else if (!enable && host->sdio_irq_enabled) { host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000); + + host->sdio_irq_enabled = false; + pm_runtime_put(mmc_dev(mmc)); } } @@ -1074,8 +1081,12 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, _host->sdcard_irq_mask &= ~irq_mask; - if (pdata->flags & TMIO_MMC_SDIO_IRQ) - tmio_mmc_enable_sdio_irq(mmc, 0); + _host->sdio_irq_enabled = false; + if (pdata->flags & TMIO_MMC_SDIO_IRQ) { + _host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; + sd_ctrl_write16(_host, CTL_SDIO_IRQ_MASK, _host->sdio_irq_mask); + sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0000); + } spin_lock_init(&_host->lock); mutex_init(&_host->ios_lock); |