diff options
Diffstat (limited to 'arch/arm/mach-pxa/colibri-pxa3xx.c')
-rw-r--r-- | arch/arm/mach-pxa/colibri-pxa3xx.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c new file mode 100644 index 00000000000..cbaa8424fc8 --- /dev/null +++ b/arch/arm/mach-pxa/colibri-pxa3xx.c @@ -0,0 +1,75 @@ +/* + * arch/arm/mach-pxa/colibri-pxa3xx.c + * + * Common functions for all Toradex PXA3xx modules + * + * Daniel Mack <daniel@caiaq.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> +#include <asm/mach-types.h> +#include <mach/hardware.h> +#include <asm/sizes.h> +#include <asm/mach/arch.h> +#include <asm/mach/irq.h> +#include <mach/pxa3xx-regs.h> +#include <mach/mfp-pxa300.h> +#include <mach/colibri.h> +#include <mach/mmc.h> + +#include "generic.h" +#include "devices.h" + +#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE) +static int mmc_detect_pin; + +static int colibri_pxa3xx_mci_init(struct device *dev, + irq_handler_t colibri_mmc_detect_int, + void *data) +{ + int ret; + + ret = gpio_request(mmc_detect_pin, "mmc card detect"); + if (ret) + return ret; + + gpio_direction_input(mmc_detect_pin); + ret = request_irq(gpio_to_irq(mmc_detect_pin), colibri_mmc_detect_int, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "MMC card detect", data); + if (ret) { + gpio_free(mmc_detect_pin); + return ret; + } + + return 0; +} + +static void colibri_pxa3xx_mci_exit(struct device *dev, void *data) +{ + free_irq(mmc_detect_pin, data); + gpio_free(gpio_to_irq(mmc_detect_pin)); +} + +static struct pxamci_platform_data colibri_pxa3xx_mci_platform_data = { + .detect_delay = 20, + .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, + .init = colibri_pxa3xx_mci_init, + .exit = colibri_pxa3xx_mci_exit, +}; + +void __init colibri_pxa3xx_init_mmc(mfp_cfg_t *pins, int len, int detect_pin) +{ + pxa3xx_mfp_config(pins, len); + mmc_detect_pin = detect_pin; + pxa_set_mci_info(&colibri_pxa3xx_mci_platform_data); +} +#endif /* CONFIG_MMC_PXA || CONFIG_MMC_PXA_MODULE */ + |