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mmc: mxs-mmc: get rid of the use of cpu_is_xxx

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The register HW_SSP_VERSION is broken for ssp version detection,
as the address of the register is different between imx23 and imx28.
Let's use platform_device_id to detect the device, so that the use
of cpu_is_xxx can be removed.

Signed-off-by: Shawn Guo <[email protected]>
Acked-by: Chris Ball <[email protected]>
This commit is contained in:
Shawn Guo 2012-05-05 20:24:01 +08:00
commit ef9b4d3996
5 changed files with 40 additions and 26 deletions
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32
drivers/mmc/host/mxs-mmc.c
View file

@ -42,7 +42,6 @@
#include <linux/pinctrl/consumer.h>
#include <linux/stmp_device.h>
#include <mach/mxs.h>
#include <mach/mmc.h>
#define DRIVER_NAME "mxs-mmc"
@ -50,8 +49,7 @@
/* card detect polling timeout */
#define MXS_MMC_DETECT_TIMEOUT (HZ/2)
#define SSP_VERSION_LATEST 4
#define ssp_is_old(host) ((host)->version < SSP_VERSION_LATEST)
#define ssp_is_old(host) ((host)->devid == IMX23_MMC)
/* SSP registers */
#define HW_SSP_CTRL0 0x000
@ -123,8 +121,6 @@
#define HW_SSP_STATUS(h) (ssp_is_old(h) ? 0x0c0 : 0x100)
#define BM_SSP_STATUS_CARD_DETECT (1 << 28)
#define BM_SSP_STATUS_SDIO_IRQ (1 << 17)
#define HW_SSP_VERSION (cpu_is_mx23() ? 0x110 : 0x130)
#define BP_SSP_VERSION_MAJOR (24)
#define BF_SSP(value, field) (((value) << BP_SSP_##field) & BM_SSP_##field)
@ -139,6 +135,11 @@
#define SSP_PIO_NUM 3
enum mxs_mmc_id {
IMX23_MMC,
IMX28_MMC,
};
struct mxs_mmc_host {
struct mmc_host *mmc;
struct mmc_request *mrq;
@ -158,7 +159,7 @@ struct mxs_mmc_host {
enum dma_transfer_direction slave_dirn;
u32 ssp_pio_words[SSP_PIO_NUM];
unsigned int version;
enum mxs_mmc_id devid;
unsigned char bus_width;
spinlock_t lock;
int sdio_irq_en;
@ -678,6 +679,19 @@ static bool mxs_mmc_dma_filter(struct dma_chan *chan, void *param)
return true;
}
static struct platform_device_id mxs_mmc_ids[] = {
{
.name = "imx23-mmc",
.driver_data = IMX23_MMC,
}, {
.name = "imx28-mmc",
.driver_data = IMX28_MMC,
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(platform, mxs_mmc_ids);
static int mxs_mmc_probe(struct platform_device *pdev)
{
struct mxs_mmc_host *host;
@ -712,10 +726,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
goto out_mmc_free;
}
/* only major verion does matter */
host->version = readl(host->base + HW_SSP_VERSION) >>
BP_SSP_VERSION_MAJOR;
host->devid = pdev->id_entry->driver_data;
host->mmc = mmc;
host->res = r;
host->dma_res = dmares;
@ -866,6 +877,7 @@ static const struct dev_pm_ops mxs_mmc_pm_ops = {
static struct platform_driver mxs_mmc_driver = {
.probe = mxs_mmc_probe,
.remove = mxs_mmc_remove,
.id_table = mxs_mmc_ids,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,