diff options
| author |   Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-06-14 14:24:35 +0200 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2012-07-21 00:02:22 -0400 |
| commit | e480606ad43bb72fd82a9bd99cdcf21829a6e9c0 (patch) | |
| tree | 1f41c40d38f9d75371907474c5c6b44c3c6b5aab /drivers/mmc/host/sh_mmcif.c | |
| parent | mmc: prohibit card detection when host is not ready (diff) | |
| download | linux-dev-e480606ad43bb72fd82a9bd99cdcf21829a6e9c0.tar.xz linux-dev-e480606ad43bb72fd82a9bd99cdcf21829a6e9c0.zip | |
mmc: sh_mmcif: support generic card-detection
Extend the sh_mmcif driver to support GPIO card detection, provided by the
slot function module. The original .get_cd() platform callback is also
preserved for now.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/sh_mmcif.c')
| -rw-r--r-- | drivers/mmc/host/sh_mmcif.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 68b31f7c290b..b2af7136cd27 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -54,6 +54,7 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/sdio.h> #include <linux/mmc/sh_mmcif.h> +#include <linux/mmc/slot-gpio.h> #include <linux/mod_devicetable.h> #include <linux/pagemap.h> #include <linux/platform_device.h> @@ -1000,6 +1001,10 @@ static int sh_mmcif_get_cd(struct mmc_host *mmc) { struct sh_mmcif_host *host = mmc_priv(mmc); struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; + int ret = mmc_gpio_get_cd(mmc); + + if (ret >= 0) + return ret; if (!p || !p->get_cd) return -ENOSYS; @@ -1372,6 +1377,12 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) goto ereqirq1; } + if (pd && pd->use_cd_gpio) { + ret = mmc_gpio_request_cd(mmc, pd->cd_gpio); + if (ret < 0) + goto erqcd; + } + clk_disable(host->hclk); ret = mmc_add_host(mmc); if (ret < 0) @@ -1385,6 +1396,9 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) return ret; emmcaddh: + if (pd && pd->use_cd_gpio) + mmc_gpio_free_cd(mmc); +erqcd: free_irq(irq[1], host); ereqirq1: free_irq(irq[0], host); @@ -1405,6 +1419,7 @@ ealloch: static int __devexit sh_mmcif_remove(struct platform_device *pdev) { struct sh_mmcif_host *host = platform_get_drvdata(pdev); + struct sh_mmcif_plat_data *pd = pdev->dev.platform_data; int irq[2]; host->dying = true; @@ -1413,6 +1428,9 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev) dev_pm_qos_hide_latency_limit(&pdev->dev); + if (pd && pd->use_cd_gpio) + mmc_gpio_free_cd(host->mmc); + mmc_remove_host(host->mmc); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); |