From d96be879ff469759af6d7fcebdb66237c18da6f8 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 6 Jan 2009 17:04:14 +0100 Subject: mmc: Add a MX2/MX3 specific SDHC driver This patch adds a MX2/MX3 specific SDHC driver. The hardware is basically the same as in the MX1, but unlike the MX1 controller the MX2 controller just works as expected. Since the MX1 driver has more workarounds for bugs than anything else I had no success with supporting MX1 and MX2 in a sane way in one driver. Signed-off-by: Sascha Hauer Signed-off-by: Pierre Ossman --- arch/arm/plat-mxc/include/mach/mmc.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/arm/plat-mxc/include/mach/mmc.h (limited to 'arch/arm/plat-mxc') diff --git a/arch/arm/plat-mxc/include/mach/mmc.h b/arch/arm/plat-mxc/include/mach/mmc.h new file mode 100644 index 00000000000..de2128dada5 --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/mmc.h @@ -0,0 +1,36 @@ +#ifndef ASMARM_ARCH_MMC_H +#define ASMARM_ARCH_MMC_H + +#include + +struct device; + +/* board specific SDHC data, optional. + * If not present, a writable card with 3,3V is assumed. + */ +struct imxmmc_platform_data { + /* Return values for the get_ro callback should be: + * 0 for a read/write card + * 1 for a read-only card + * -ENOSYS when not supported (equal to NULL callback) + * or a negative errno value when something bad happened + */ + int (*get_ro)(struct device *); + + /* board specific hook to (de)initialize the SD slot. + * The board code can call 'handler' on a card detection + * change giving data as argument. + */ + int (*init)(struct device *dev, irq_handler_t handler, void *data); + void (*exit)(struct device *dev, void *data); + + /* available voltages. If not given, assume + * MMC_VDD_32_33 | MMC_VDD_33_34 + */ + unsigned int ocr_avail; + + /* adjust slot voltage */ + void (*setpower)(struct device *, unsigned int vdd); +}; + +#endif -- cgit v1.2.3