diff options
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index a7406e3701c9..28e14c7a2540 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -209,6 +209,7 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) { struct tmio_mmc_data *pdata = host->pdata; + struct resource *res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0); /* * Testing on sh-mobile showed that SDIO IRQs are unmasked when @@ -218,8 +219,11 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) */ if (pdata->flags & TMIO_MMC_SDIO_IRQ) disable_irq(host->irq); - sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0000); - msleep(10); + /* implicit BUG_ON(!res) */ + if (resource_size(res) > 0x100) { + sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0000); + msleep(10); + } if (pdata->flags & TMIO_MMC_SDIO_IRQ) { tmio_mmc_enable_sdio_irq(host->mmc, host->sdio_irq_enabled); enable_irq(host->irq); @@ -232,6 +236,7 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) static void tmio_mmc_clk_start(struct tmio_mmc_host *host) { struct tmio_mmc_data *pdata = host->pdata; + struct resource *res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0); sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, 0x0100 | sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL)); @@ -239,8 +244,11 @@ static void tmio_mmc_clk_start(struct tmio_mmc_host *host) /* see comment in tmio_mmc_clk_stop above */ if (pdata->flags & TMIO_MMC_SDIO_IRQ) disable_irq(host->irq); - sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100); - msleep(10); + /* implicit BUG_ON(!res) */ + if (resource_size(res) > 0x100) { + sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100); + msleep(10); + } if (pdata->flags & TMIO_MMC_SDIO_IRQ) { tmio_mmc_enable_sdio_irq(host->mmc, host->sdio_irq_enabled); enable_irq(host->irq); @@ -249,12 +257,17 @@ static void tmio_mmc_clk_start(struct tmio_mmc_host *host) static void tmio_mmc_reset(struct tmio_mmc_host *host) { + struct resource *res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0); + /* FIXME - should we set stop clock reg here */ sd_ctrl_write16(host, CTL_RESET_SD, 0x0000); - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000); + /* implicit BUG_ON(!res) */ + if (resource_size(res) > 0x100) + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000); msleep(10); sd_ctrl_write16(host, CTL_RESET_SD, 0x0001); - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001); + if (resource_size(res) > 0x100) + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001); msleep(10); } |