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| author | Shawn Guo <shawn.guo@linaro.org> | 2012-05-05 20:24:01 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2012-05-13 08:05:31 +0800 |
| commit | ef9b4d3996624f65ffa928bd7767f0e186687c15 (patch) | |
| tree | a0172896d66edf625d7c600e78525ee91401c25e /drivers/mmc/host/mxs-mmc.c | |
| parent | e0bf141db2e649830a1851f7c5c01f3b9b410778 (diff) | |
| download | linux-ef9b4d3996624f65ffa928bd7767f0e186687c15.tar.gz linux-ef9b4d3996624f65ffa928bd7767f0e186687c15.tar.bz2 linux-ef9b4d3996624f65ffa928bd7767f0e186687c15.zip | |
mmc: mxs-mmc: get rid of the use of cpu_is_xxx
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 <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/mxs-mmc.c')
| -rw-r--r-- | drivers/mmc/host/mxs-mmc.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index a699a8673766..92395563cd82 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -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, |