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| author | Shinobu Uehara | 2014-08-25 05:00:52 +0200 |
|---|---|---|
| committer | Ulf Hansson | 2014-09-09 13:59:14 +0200 |
| commit | 6b98757e53cb0e93b02db4067c14afcb32c90615 (patch) | |
| tree | 689f24317299728fb89df119c278ebcf2d9171b6 | |
| parent | mmc: tmio: control multiple block transfer mode (diff) | |
| download | kernel-qcow2-linux-6b98757e53cb0e93b02db4067c14afcb32c90615.tar.gz kernel-qcow2-linux-6b98757e53cb0e93b02db4067c14afcb32c90615.tar.xz kernel-qcow2-linux-6b98757e53cb0e93b02db4067c14afcb32c90615.zip | |
mmc: tmio: add TMIO_MMC_SDIO_STATUS_QUIRK
Renesas R-Car SDHI should set reserved bits
on CTL_SDIO_STATUS register when writing.
This patch adds new TMIO_MMC_SDIO_STATUS_QUIRK flags
for this purpose
[Kuninori Morimoto: tidyuped for upstreaming
enabled this flags for all SH-Mobile/R-Car]
Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/sh_mobile_sdhi.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 7 | ||||
| -rw-r--r-- | include/linux/mfd/tmio.h | 5 |
3 files changed, 16 insertions, 1 deletions
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 4727586b063e..ebcfc659b799 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -230,6 +230,11 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) */ mmc_data->flags |= TMIO_MMC_HAVE_CMD12_CTRL; + /* + * All SDHI need SDIO_INFO1 reserved bit + */ + mmc_data->flags |= TMIO_MMC_SDIO_STATUS_QUIRK; + if (of_id && of_id->data) { const struct sh_mobile_sdhi_of_data *of_data = of_id->data; mmc_data->flags |= of_data->tmio_flags; diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index c2804827be9f..c5ffa92ccb18 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -665,6 +665,7 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) struct mmc_host *mmc = host->mmc; struct tmio_mmc_data *pdata = host->pdata; unsigned int ireg, status; + unsigned int sdio_status; if (!(pdata->flags & TMIO_MMC_SDIO_IRQ)) return IRQ_HANDLED; @@ -672,7 +673,11 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) status = sd_ctrl_read16(host, CTL_SDIO_STATUS); ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask; - sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL); + sdio_status = status & ~TMIO_SDIO_MASK_ALL; + if (pdata->flags & TMIO_MMC_SDIO_STATUS_QUIRK) + sdio_status |= 6; + + sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status); if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ) mmc_signal_sdio_irq(mmc); diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 7432d95b08e2..a7493ae01b58 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -89,6 +89,11 @@ */ #define TMIO_MMC_HAVE_CMD12_CTRL (1 << 7) +/* + * Some controllers needs to set 1 on SDIO status reserved bits + */ +#define TMIO_MMC_SDIO_STATUS_QUIRK (1 << 8) + int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base); int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base); void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state); |