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authorPavel Pisa <ppisa@pikron.com>2006-04-02 19:27:07 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-04-02 19:27:07 +0100
commit56ca904053ab14ba4067a72b69a5edf246771209 (patch)
tree23dc10e74bb4ce3d2a2ce5a9d8da1c5f5feda94d /arch
parent65dbf34393f7b3d20e993d9651a825df0fa5376b (diff)
[ARM] 3457/1: i.MX: SD/MMC support for i.MX/MX1
Patch from Pavel Pisa This patch adds support of i.MX/MX1 SD/MMC controller. It has been significantly redesigned from the original Sascha Hauer's version to support scatter-gather DMA, to conform to latest Pierre Ossman's and Russell King's MMC-SD Linux 2.6.x infrastructure. The handling of all events has been moved to the softirq context and is designed with no busy-looping in mind. Unfortunately some controller bugs has to be overcome by limited looping about 2-20 usec but these are observed only for initial card recognition phase. There are still some missing/missed IRQs problems under heavy load. Help of somebody with access to the full SDHC design information is probably necessary. Regenerated against 2.6.16-git-060402 to solve clash with other patches. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-imx/generic.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/generic.c b/arch/arm/mach-imx/generic.c
index 37613ad6836..9d8331be2b5 100644
--- a/arch/arm/mach-imx/generic.c
+++ b/arch/arm/mach-imx/generic.c
@@ -33,6 +33,7 @@
#include <asm/arch/imx-regs.h>
#include <asm/mach/map.h>
+#include <asm/arch/mmc.h>
void imx_gpio_mode(int gpio_mode)
{
@@ -175,13 +176,25 @@ static struct resource imx_mmc_resources[] = {
},
};
+static u64 imxmmmc_dmamask = 0xffffffffUL;
+
static struct platform_device imx_mmc_device = {
.name = "imx-mmc",
.id = 0,
+ .dev = {
+ .dma_mask = &imxmmmc_dmamask,
+ .coherent_dma_mask = 0xffffffff,
+ },
.num_resources = ARRAY_SIZE(imx_mmc_resources),
.resource = imx_mmc_resources,
};
+void __init imx_set_mmc_info(struct imxmmc_platform_data *info)
+{
+ imx_mmc_device.dev.platform_data = info;
+}
+EXPORT_SYMBOL(imx_set_mmc_info);
+
static struct resource imx_uart1_resources[] = {
[0] = {
.start = 0x00206000,