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authorSascha Hauer <s.hauer@pengutronix.de>2009-01-06 11:04:14 -0500
committerPierre Ossman <drzeus@drzeus.cx>2009-02-02 14:57:05 -0500
commitd96be879ff469759af6d7fcebdb66237c18da6f8 (patch)
treeb15b65b27edc43c5aae914f66a111735914a58e7 /arch
parent27421e211a39784694b597dbf35848b88363c248 (diff)
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 <s.hauer@pengutronix.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/plat-mxc/include/mach/mmc.h36
1 files changed, 36 insertions, 0 deletions
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 000000000000..de2128dada5c
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mmc.h
@@ -0,0 +1,36 @@
1#ifndef ASMARM_ARCH_MMC_H
2#define ASMARM_ARCH_MMC_H
3
4#include <linux/mmc/host.h>
5
6struct device;
7
8/* board specific SDHC data, optional.
9 * If not present, a writable card with 3,3V is assumed.
10 */
11struct imxmmc_platform_data {
12 /* Return values for the get_ro callback should be:
13 * 0 for a read/write card
14 * 1 for a read-only card
15 * -ENOSYS when not supported (equal to NULL callback)
16 * or a negative errno value when something bad happened
17 */
18 int (*get_ro)(struct device *);
19
20 /* board specific hook to (de)initialize the SD slot.
21 * The board code can call 'handler' on a card detection
22 * change giving data as argument.
23 */
24 int (*init)(struct device *dev, irq_handler_t handler, void *data);
25 void (*exit)(struct device *dev, void *data);
26
27 /* available voltages. If not given, assume
28 * MMC_VDD_32_33 | MMC_VDD_33_34
29 */
30 unsigned int ocr_avail;
31
32 /* adjust slot voltage */
33 void (*setpower)(struct device *, unsigned int vdd);
34};
35
36#endif