mirror of https://github.com/hak5/openwrt.git
102 lines
3.0 KiB
Diff
102 lines
3.0 KiB
Diff
|
The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice
|
||
|
set of helper functions to simplify the management of the write
|
||
|
protect GPIO in MMC host drivers. This patch migrates the mvsdio
|
||
|
driver to using those helpers, which will make the ->probe() code
|
||
|
simpler, and therefore ease the process of adding a Device Tree
|
||
|
binding for this driver.
|
||
|
|
||
|
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
---
|
||
|
drivers/mmc/host/mvsdio.c | 34 +++++-----------------------------
|
||
|
1 file changed, 5 insertions(+), 29 deletions(-)
|
||
|
|
||
|
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
|
||
|
index de4c20b..a24a22f 100644
|
||
|
--- a/drivers/mmc/host/mvsdio.c
|
||
|
+++ b/drivers/mmc/host/mvsdio.c
|
||
|
@@ -22,6 +22,7 @@
|
||
|
#include <linux/clk.h>
|
||
|
#include <linux/gpio.h>
|
||
|
#include <linux/mmc/host.h>
|
||
|
+#include <linux/mmc/slot-gpio.h>
|
||
|
|
||
|
#include <asm/sizes.h>
|
||
|
#include <asm/unaligned.h>
|
||
|
@@ -54,7 +55,6 @@ struct mvsd_host {
|
||
|
int irq;
|
||
|
struct clk *clk;
|
||
|
int gpio_card_detect;
|
||
|
- int gpio_write_protect;
|
||
|
};
|
||
|
|
||
|
#define mvsd_write(offs, val) writel(val, iobase + (offs))
|
||
|
@@ -566,20 +566,6 @@ static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable)
|
||
|
spin_unlock_irqrestore(&host->lock, flags);
|
||
|
}
|
||
|
|
||
|
-static int mvsd_get_ro(struct mmc_host *mmc)
|
||
|
-{
|
||
|
- struct mvsd_host *host = mmc_priv(mmc);
|
||
|
-
|
||
|
- if (host->gpio_write_protect)
|
||
|
- return gpio_get_value(host->gpio_write_protect);
|
||
|
-
|
||
|
- /*
|
||
|
- * Board doesn't support read only detection; let the mmc core
|
||
|
- * decide what to do.
|
||
|
- */
|
||
|
- return -ENOSYS;
|
||
|
-}
|
||
|
-
|
||
|
static void mvsd_power_up(struct mvsd_host *host)
|
||
|
{
|
||
|
void __iomem *iobase = host->base;
|
||
|
@@ -676,7 +662,7 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
|
||
|
|
||
|
static const struct mmc_host_ops mvsd_ops = {
|
||
|
.request = mvsd_request,
|
||
|
- .get_ro = mvsd_get_ro,
|
||
|
+ .get_ro = mmc_gpio_get_ro,
|
||
|
.set_ios = mvsd_set_ios,
|
||
|
.enable_sdio_irq = mvsd_enable_sdio_irq,
|
||
|
};
|
||
|
@@ -798,15 +784,7 @@ static int __init mvsd_probe(struct platform_device *pdev)
|
||
|
if (!host->gpio_card_detect)
|
||
|
mmc->caps |= MMC_CAP_NEEDS_POLL;
|
||
|
|
||
|
- if (mvsd_data->gpio_write_protect) {
|
||
|
- ret = gpio_request(mvsd_data->gpio_write_protect,
|
||
|
- DRIVER_NAME " wp");
|
||
|
- if (ret == 0) {
|
||
|
- gpio_direction_input(mvsd_data->gpio_write_protect);
|
||
|
- host->gpio_write_protect =
|
||
|
- mvsd_data->gpio_write_protect;
|
||
|
- }
|
||
|
- }
|
||
|
+ mmc_gpio_request_ro(mmc, mvsd_data->gpio_write_protect);
|
||
|
|
||
|
setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host);
|
||
|
platform_set_drvdata(pdev, mmc);
|
||
|
@@ -831,8 +809,7 @@ out:
|
||
|
free_irq(gpio_to_irq(host->gpio_card_detect), host);
|
||
|
gpio_free(host->gpio_card_detect);
|
||
|
}
|
||
|
- if (host->gpio_write_protect)
|
||
|
- gpio_free(host->gpio_write_protect);
|
||
|
+ mmc_gpio_free_ro(mmc);
|
||
|
if (host->base)
|
||
|
iounmap(host->base);
|
||
|
}
|
||
|
@@ -861,8 +838,7 @@ static int __exit mvsd_remove(struct platform_device *pdev)
|
||
|
}
|
||
|
mmc_remove_host(mmc);
|
||
|
free_irq(host->irq, host);
|
||
|
- if (host->gpio_write_protect)
|
||
|
- gpio_free(host->gpio_write_protect);
|
||
|
+ mmc_gpio_free_ro(mmc);
|
||
|
del_timer_sync(&host->timer);
|
||
|
mvsd_power_down(host);
|
||
|
iounmap(host->base);
|
||
|
--
|
||
|
1.7.9.5
|