diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.8/006-mmc_mvsdio_use_slot_gpio.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.8/006-mmc_mvsdio_use_slot_gpio.patch | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.8/006-mmc_mvsdio_use_slot_gpio.patch b/target/linux/mvebu/patches-3.8/006-mmc_mvsdio_use_slot_gpio.patch new file mode 100644 index 000000000..8a77de306 --- /dev/null +++ b/target/linux/mvebu/patches-3.8/006-mmc_mvsdio_use_slot_gpio.patch @@ -0,0 +1,101 @@ +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 |