You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
3.5 KiB
115 lines
3.5 KiB
From patchwork Wed Jan 16 13:13:57 2013
|
|
Content-Type: text/plain; charset="utf-8"
|
|
MIME-Version: 1.0
|
|
Content-Transfer-Encoding: 7bit
|
|
Subject: [2/5] mmc: mvsdio: use slot-gpio infrastructure for write protect gpio
|
|
Date: Wed, 16 Jan 2013 13:13:57 -0000
|
|
From: Andrew Lunn <andrew@lunn.ch>
|
|
X-Patchwork-Id: 1987931
|
|
Message-Id: <1358342040-7130-3-git-send-email-andrew@lunn.ch>
|
|
To: Jason Cooper <jason@lakedaemon.net>
|
|
Cc: linux ARM <linux-arm-kernel@lists.infradead.org>,
|
|
linux-mmc@vger.kernel.org, linux@arm.linux.org.uk,
|
|
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
|
|
Andrew Lunn <andrew@lunn.ch>
|
|
|
|
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
|
|
|
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>
|
|
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
|
|
Tested-by: Stefan Peter <s.peter@mpl.ch>
|
|
Tested-by: Florian Fainelli <florian@openwrt.org>
|
|
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
|
|
|
|
---
|
|
drivers/mmc/host/mvsdio.c | 30 +++++-------------------------
|
|
1 file changed, 5 insertions(+), 25 deletions(-)
|
|
|
|
--- 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>
|
|
@@ -52,7 +53,6 @@ struct mvsd_host {
|
|
struct device *dev;
|
|
struct clk *clk;
|
|
int gpio_card_detect;
|
|
- int gpio_write_protect;
|
|
};
|
|
|
|
#define mvsd_write(offs, val) writel(val, iobase + (offs))
|
|
@@ -564,20 +564,6 @@ static void mvsd_enable_sdio_irq(struct
|
|
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;
|
|
@@ -674,7 +660,7 @@ static void mvsd_set_ios(struct mmc_host
|
|
|
|
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,
|
|
};
|
|
@@ -793,15 +779,7 @@ static int __init mvsd_probe(struct plat
|
|
if (!host->gpio_card_detect)
|
|
mmc->caps |= MMC_CAP_NEEDS_POLL;
|
|
|
|
- if (mvsd_data->gpio_write_protect) {
|
|
- ret = devm_gpio_request_one(&pdev->dev,
|
|
- mvsd_data->gpio_write_protect,
|
|
- GPIOF_IN, DRIVER_NAME " wp");
|
|
- if (ret == 0) {
|
|
- 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);
|
|
@@ -820,6 +798,7 @@ static int __init mvsd_probe(struct plat
|
|
|
|
out:
|
|
if (mmc) {
|
|
+ mmc_gpio_free_ro(mmc);
|
|
if (!IS_ERR(host->clk))
|
|
clk_disable_unprepare(host->clk);
|
|
mmc_free_host(mmc);
|
|
@@ -834,6 +813,7 @@ static int __exit mvsd_remove(struct pla
|
|
|
|
struct mvsd_host *host = mmc_priv(mmc);
|
|
|
|
+ mmc_gpio_free_ro(mmc);
|
|
mmc_remove_host(mmc);
|
|
del_timer_sync(&host->timer);
|
|
mvsd_power_down(host);
|
|
|