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mmc: tmio: use SDIO master interrupt bit only when allowed

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The master bit to enable SDIO interrupts can only be accessed if
SCLKDIVEN bit allows that. However, the core uses the SDIO enable
callback at times when SCLKDIVEN forbids the change. This leads to
"timeout waiting for SD bus idle" messages.

We now activate the master bit in probe once if SDIO is supported. IRQ
en-/disabling will be done now by the individual IRQ enablement bits
only.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Yasushi SHOJI <yashi@atmark-techno.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2016-12-09 17:51:41 +01:00 committed by Ulf Hansson
parent 7089db84e3
commit c51ff6c618
1 changed files with 4 additions and 3 deletions
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7
drivers/mmc/host/tmio_mmc_pio.c
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@ -140,12 +140,10 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
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 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_mark_last_busy(mmc_dev(mmc));
@ -1232,7 +1230,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
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);
sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0001);
}
spin_lock_init(&_host->lock);
@ -1280,6 +1278,9 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
struct platform_device *pdev = host->pdev;
struct mmc_host *mmc = host->mmc;
if (host->pdata->flags & TMIO_MMC_SDIO_IRQ)
sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000);
if (!host->native_hotplug)
pm_runtime_get_sync(&pdev->dev);