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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>
hifive-unleashed-5.1
Shawn Guo 2012-05-05 20:24:01 +08:00
parent e0bf141db2
commit ef9b4d3996
5 changed files with 40 additions and 26 deletions
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21
arch/arm/mach-mxs/devices/platform-mxs-mmc.c
View File

@ -17,8 +17,9 @@
#include <mach/mx28.h>
#include <mach/devices-common.h>
#define mxs_mxs_mmc_data_entry_single(soc, _id, hwid) \
#define mxs_mxs_mmc_data_entry_single(soc, _devid, _id, hwid) \
{ \
.devid = _devid, \
.id = _id, \
.iobase = soc ## _SSP ## hwid ## _BASE_ADDR, \
.dma = soc ## _DMA_SSP ## hwid, \
@ -26,23 +27,23 @@
.irq_dma = soc ## _INT_SSP ## hwid ## _DMA, \
}
#define mxs_mxs_mmc_data_entry(soc, _id, hwid) \
[_id] = mxs_mxs_mmc_data_entry_single(soc, _id, hwid)
#define mxs_mxs_mmc_data_entry(soc, _devid, _id, hwid) \
[_id] = mxs_mxs_mmc_data_entry_single(soc, _devid, _id, hwid)
#ifdef CONFIG_SOC_IMX23
const struct mxs_mxs_mmc_data mx23_mxs_mmc_data[] __initconst = {
mxs_mxs_mmc_data_entry(MX23, 0, 1),
mxs_mxs_mmc_data_entry(MX23, 1, 2),
mxs_mxs_mmc_data_entry(MX23, "imx23-mmc", 0, 1),
mxs_mxs_mmc_data_entry(MX23, "imx23-mmc", 1, 2),
};
#endif
#ifdef CONFIG_SOC_IMX28
const struct mxs_mxs_mmc_data mx28_mxs_mmc_data[] __initconst = {
mxs_mxs_mmc_data_entry(MX28, 0, 0),
mxs_mxs_mmc_data_entry(MX28, 1, 1),
mxs_mxs_mmc_data_entry(MX28, 2, 2),
mxs_mxs_mmc_data_entry(MX28, 3, 3),
mxs_mxs_mmc_data_entry(MX28, "imx28-mmc", 0, 0),
mxs_mxs_mmc_data_entry(MX28, "imx28-mmc", 1, 1),
mxs_mxs_mmc_data_entry(MX28, "imx28-mmc", 2, 2),
mxs_mxs_mmc_data_entry(MX28, "imx28-mmc", 3, 3),
};
#endif
@ -70,6 +71,6 @@ struct platform_device *__init mxs_add_mxs_mmc(
},
};
return mxs_add_platform_device("mxs-mmc", data->id,
return mxs_add_platform_device(data->devid, data->id,
res, ARRAY_SIZE(res), pdata, sizeof(*pdata));
}

1
arch/arm/mach-mxs/include/mach/devices-common.h
View File

@ -89,6 +89,7 @@ struct platform_device * __init mxs_add_mxs_i2c(
/* mmc */
#include <mach/mmc.h>
struct mxs_mxs_mmc_data {
const char *devid;
int id;
resource_size_t iobase;
resource_size_t dma;

4
drivers/clk/mxs/clk-imx23.c
View File

@ -93,8 +93,8 @@ static struct clk_lookup xbus_lookups[] __initdata = {
};
static struct clk_lookup ssp_lookups[] __initdata = {
{ .dev_id = "mxs-mmc.0", },
{ .dev_id = "mxs-mmc.1", },
{ .dev_id = "imx23-mmc.0", },
{ .dev_id = "imx23-mmc.1", },
{ .dev_id = "80010000.ssp", },
{ .dev_id = "80034000.ssp", },
};

8
drivers/clk/mxs/clk-imx28.c
View File

@ -148,22 +148,22 @@ static struct clk_lookup xbus_lookups[] __initdata = {
};
static struct clk_lookup ssp0_lookups[] __initdata = {
{ .dev_id = "mxs-mmc.0", },
{ .dev_id = "imx28-mmc.0", },
{ .dev_id = "80010000.ssp", },
};
static struct clk_lookup ssp1_lookups[] __initdata = {
{ .dev_id = "mxs-mmc.1", },
{ .dev_id = "imx28-mmc.1", },
{ .dev_id = "80012000.ssp", },
};
static struct clk_lookup ssp2_lookups[] __initdata = {
{ .dev_id = "mxs-mmc.2", },
{ .dev_id = "imx28-mmc.2", },
{ .dev_id = "80014000.ssp", },
};
static struct clk_lookup ssp3_lookups[] __initdata = {
{ .dev_id = "mxs-mmc.3", },
{ .dev_id = "imx28-mmc.3", },
{ .dev_id = "80016000.ssp", },
};

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,