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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2012-06-14 16:24:35 +0400
committerChris Ball <cjb@laptop.org>2012-07-21 08:02:22 +0400
commite480606ad43bb72fd82a9bd99cdcf21829a6e9c0 (patch)
tree1f41c40d38f9d75371907474c5c6b44c3c6b5aab /drivers/mmc
parentd9adcc12860d76cf3401c6ab7c0406b15b356b7a (diff)
downloadlinux-e480606ad43bb72fd82a9bd99cdcf21829a6e9c0.tar.xz
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')
-rw-r--r--drivers/mmc/host/sh_mmcif.c18
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);