diff options
author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-04-30 23:31:57 +0200 |
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committer | Chris Ball <cjb@laptop.org> | 2012-07-10 23:04:04 -0400 |
commit | fd0ea65d3e675e479e022b6cfc9ebe1864c76afc (patch) | |
tree | 8869d7965ccb05b9ca635d21c983d84a552ee21e /drivers/mmc/core | |
parent | 0f506a96693d8ad4aeccbd98dbd54a3c7357cfa8 (diff) | |
download | op-kernel-dev-fd0ea65d3e675e479e022b6cfc9ebe1864c76afc.zip op-kernel-dev-fd0ea65d3e675e479e022b6cfc9ebe1864c76afc.tar.gz |
mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but
also to implement the write-protection pin. Rename cd-gpio helpers to
slot-gpio to make addition of further slot GPIO functions possible.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core')
-rw-r--r-- | drivers/mmc/core/Makefile | 2 | ||||
-rw-r--r-- | drivers/mmc/core/slot-gpio.c (renamed from drivers/mmc/core/cd-gpio.c) | 48 |
2 files changed, 25 insertions, 25 deletions
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile index dca4428..38ed210 100644 --- a/drivers/mmc/core/Makefile +++ b/drivers/mmc/core/Makefile @@ -7,6 +7,6 @@ mmc_core-y := core.o bus.o host.o \ mmc.o mmc_ops.o sd.o sd_ops.o \ sdio.o sdio_ops.o sdio_bus.o \ sdio_cis.o sdio_io.o sdio_irq.o \ - quirks.o cd-gpio.o + quirks.o slot-gpio.o mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o diff --git a/drivers/mmc/core/cd-gpio.c b/drivers/mmc/core/slot-gpio.c index 8f5dc08..9796710 100644 --- a/drivers/mmc/core/cd-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -12,72 +12,72 @@ #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/jiffies.h> -#include <linux/mmc/cd-gpio.h> #include <linux/mmc/host.h> +#include <linux/mmc/slot-gpio.h> #include <linux/module.h> #include <linux/slab.h> -struct mmc_cd_gpio { - unsigned int gpio; - char label[0]; +struct mmc_gpio { + unsigned int cd_gpio; + char cd_label[0]; }; -static irqreturn_t mmc_cd_gpio_irqt(int irq, void *dev_id) +static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id) { /* Schedule a card detection after a debounce timeout */ mmc_detect_change(dev_id, msecs_to_jiffies(100)); return IRQ_HANDLED; } -int mmc_cd_gpio_request(struct mmc_host *host, unsigned int gpio) +int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio) { size_t len = strlen(dev_name(host->parent)) + 4; - struct mmc_cd_gpio *cd; + struct mmc_gpio *ctx; int irq = gpio_to_irq(gpio); int ret; if (irq < 0) return irq; - cd = kmalloc(sizeof(*cd) + len, GFP_KERNEL); - if (!cd) + ctx = kmalloc(sizeof(*ctx) + len, GFP_KERNEL); + if (!ctx) return -ENOMEM; - snprintf(cd->label, len, "%s cd", dev_name(host->parent)); + snprintf(ctx->cd_label, len, "%s cd", dev_name(host->parent)); - ret = gpio_request_one(gpio, GPIOF_DIR_IN, cd->label); + ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->cd_label); if (ret < 0) goto egpioreq; - ret = request_threaded_irq(irq, NULL, mmc_cd_gpio_irqt, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | - IRQF_ONESHOT, cd->label, host); + ret = request_threaded_irq(irq, NULL, mmc_gpio_cd_irqt, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + ctx->cd_label, host); if (ret < 0) goto eirqreq; - cd->gpio = gpio; + ctx->cd_gpio = gpio; host->hotplug.irq = irq; - host->hotplug.handler_priv = cd; + host->hotplug.handler_priv = ctx; return 0; eirqreq: gpio_free(gpio); egpioreq: - kfree(cd); + kfree(ctx); return ret; } -EXPORT_SYMBOL(mmc_cd_gpio_request); +EXPORT_SYMBOL(mmc_gpio_request_cd); -void mmc_cd_gpio_free(struct mmc_host *host) +void mmc_gpio_free_cd(struct mmc_host *host) { - struct mmc_cd_gpio *cd = host->hotplug.handler_priv; + struct mmc_gpio *ctx = host->hotplug.handler_priv; - if (!cd) + if (!ctx) return; free_irq(host->hotplug.irq, host); - gpio_free(cd->gpio); - kfree(cd); + gpio_free(ctx->cd_gpio); + kfree(ctx); } -EXPORT_SYMBOL(mmc_cd_gpio_free); +EXPORT_SYMBOL(mmc_gpio_free_cd); |