mmc: mxcmmc: remove cpu_is_xxx by using platform_device_id

It changes the driver to use platform_device_id rather than cpu_is_xxx
to determine the controller type, and updates the platform code
accordingly.

As the result, mach/hardware.h inclusion gets removed from the driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: linux-mmc@vger.kernel.org

arch/arm/mach-imx/clk-imx27.c

@@ -212,12 +212,12 @@ int __init mx27_clocks_init(unsigned long fref)
 	clk_register_clkdev(clk[gpt6_ipg_gate], "ipg", "imx-gpt.5");
 	clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.5");
 	clk_register_clkdev(clk[pwm_ipg_gate], NULL, "mxc_pwm.0");
-	clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.0");
-	clk_register_clkdev(clk[sdhc1_ipg_gate], "ipg", "mxc-mmc.0");
-	clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.1");
-	clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.1");
-	clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.2");
-	clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.2");
+	clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.0");
+	clk_register_clkdev(clk[sdhc1_ipg_gate], "ipg", "imx21-mmc.0");
+	clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.1");
+	clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "imx21-mmc.1");
+	clk_register_clkdev(clk[per2_gate], "per", "imx21-mmc.2");
+	clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "imx21-mmc.2");
 	clk_register_clkdev(clk[cspi1_ipg_gate], NULL, "imx27-cspi.0");
 	clk_register_clkdev(clk[cspi2_ipg_gate], NULL, "imx27-cspi.1");
 	clk_register_clkdev(clk[cspi3_ipg_gate], NULL, "imx27-cspi.2");

arch/arm/mach-imx/clk-imx31.c

@@ -159,8 +159,8 @@ int __init mx31_clocks_init(unsigned long fref)
 	clk_register_clkdev(clk[i2c2_gate], NULL, "imx21-i2c.1");
 	clk_register_clkdev(clk[i2c3_gate], NULL, "imx21-i2c.2");
 	clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1.0");
-	clk_register_clkdev(clk[sdhc1_gate], NULL, "mxc-mmc.0");
-	clk_register_clkdev(clk[sdhc2_gate], NULL, "mxc-mmc.1");
+	clk_register_clkdev(clk[sdhc1_gate], NULL, "imx31-mmc.0");
+	clk_register_clkdev(clk[sdhc2_gate], NULL, "imx31-mmc.1");
 	clk_register_clkdev(clk[ssi1_gate], NULL, "imx-ssi.0");
 	clk_register_clkdev(clk[ssi2_gate], NULL, "imx-ssi.1");
 	clk_register_clkdev(clk[firi_gate], "firi", NULL);

arch/arm/mach-imx/devices/devices-common.h

@@ -246,6 +246,7 @@ struct platform_device *__init imx_add_mxc_ehci(
 
 #include <linux/platform_data/mmc-mxcmmc.h>
 struct imx_mxc_mmc_data {
+	const char *devid;
 	int id;
 	resource_size_t iobase;
 	resource_size_t iosize;

arch/arm/mach-imx/devices/platform-mxc-mmc.c

@@ -10,21 +10,22 @@
 #include <mach/hardware.h>
 #include "devices-common.h"
 
-#define imx_mxc_mmc_data_entry_single(soc, _id, _hwid, _size)		\
+#define imx_mxc_mmc_data_entry_single(soc, _devid, _id, _hwid, _size)	\
 	{								\
+		.devid = _devid,					\
 		.id = _id,						\
 		.iobase = soc ## _SDHC ## _hwid ## _BASE_ADDR,		\
 		.iosize = _size,					\
 		.irq = soc ## _INT_SDHC ## _hwid,			\
 		.dmareq = soc ## _DMA_REQ_SDHC ## _hwid,		\
 	}
-#define imx_mxc_mmc_data_entry(soc, _id, _hwid, _size)			\
-	[_id] = imx_mxc_mmc_data_entry_single(soc, _id, _hwid, _size)
+#define imx_mxc_mmc_data_entry(soc, _devid, _id, _hwid, _size)		\
+	[_id] = imx_mxc_mmc_data_entry_single(soc, _devid, _id, _hwid, _size)
 
 #ifdef CONFIG_SOC_IMX21
 const struct imx_mxc_mmc_data imx21_mxc_mmc_data[] __initconst = {
 #define imx21_mxc_mmc_data_entry(_id, _hwid)				\
-	imx_mxc_mmc_data_entry(MX21, _id, _hwid, SZ_4K)
+	imx_mxc_mmc_data_entry(MX21, "imx21-mmc", _id, _hwid, SZ_4K)
 	imx21_mxc_mmc_data_entry(0, 1),
 	imx21_mxc_mmc_data_entry(1, 2),
 };
@@ -33,7 +34,7 @@ const struct imx_mxc_mmc_data imx21_mxc_mmc_data[] __initconst = {
 #ifdef CONFIG_SOC_IMX27
 const struct imx_mxc_mmc_data imx27_mxc_mmc_data[] __initconst = {
 #define imx27_mxc_mmc_data_entry(_id, _hwid)				\
-	imx_mxc_mmc_data_entry(MX27, _id, _hwid, SZ_4K)
+	imx_mxc_mmc_data_entry(MX27, "imx21-mmc", _id, _hwid, SZ_4K)
 	imx27_mxc_mmc_data_entry(0, 1),
 	imx27_mxc_mmc_data_entry(1, 2),
 };
@@ -42,7 +43,7 @@ const struct imx_mxc_mmc_data imx27_mxc_mmc_data[] __initconst = {
 #ifdef CONFIG_SOC_IMX31
 const struct imx_mxc_mmc_data imx31_mxc_mmc_data[] __initconst = {
 #define imx31_mxc_mmc_data_entry(_id, _hwid)				\
-	imx_mxc_mmc_data_entry(MX31, _id, _hwid, SZ_16K)
+	imx_mxc_mmc_data_entry(MX31, "imx31-mmc", _id, _hwid, SZ_16K)
 	imx31_mxc_mmc_data_entry(0, 1),
 	imx31_mxc_mmc_data_entry(1, 2),
 };
@@ -67,7 +68,7 @@ struct platform_device *__init imx_add_mxc_mmc(
 			.flags = IORESOURCE_DMA,
 		},
 	};
-	return imx_add_platform_device_dmamask("mxc-mmc", data->id,
+	return imx_add_platform_device_dmamask(data->devid, data->id,
 			res, ARRAY_SIZE(res),
 			pdata, sizeof(*pdata), DMA_BIT_MASK(32));
 }

arch/arm/mach-imx/mach-mx31_3ds.c

@@ -393,7 +393,7 @@ static struct regulator_init_data gpo_init = {
 };
 
 static struct regulator_consumer_supply vmmc2_consumers[] = {
-	REGULATOR_SUPPLY("vmmc", "mxc-mmc.0"),
+	REGULATOR_SUPPLY("vmmc", "imx31-mmc.0"),
 };
 
 static struct regulator_init_data vmmc2_init = {

arch/arm/mach-imx/mach-mx31moboard.c

@@ -175,11 +175,11 @@ static const struct spi_imx_master moboard_spi1_pdata __initconst = {
 
 static struct regulator_consumer_supply sdhc_consumers[] = {
 	{
-		.dev_name = "mxc-mmc.0",
+		.dev_name = "imx31-mmc.0",
 		.supply	= "sdhc0_vcc",
 	},
 	{
-		.dev_name = "mxc-mmc.1",
+		.dev_name = "imx31-mmc.1",
 		.supply	= "sdhc1_vcc",
 	},
 };

arch/arm/mach-imx/mach-pcm038.c

@@ -212,7 +212,7 @@ static const struct spi_imx_master pcm038_spi0_data __initconst = {
 
 static struct regulator_consumer_supply sdhc1_consumers[] = {
 	{
-		.dev_name = "mxc-mmc.1",
+		.dev_name = "imx21-mmc.1",
 		.supply	= "sdhc_vcc",
 	},
 };

drivers/mmc/host/mxcmmc.c

@@ -41,7 +41,6 @@
 #include <linux/platform_data/mmc-mxcmmc.h>
 
 #include <linux/platform_data/dma-imx.h>
-#include <mach/hardware.h>
 
 #define DRIVER_NAME "mxc-mmc"
 #define MXCMCI_TIMEOUT_MS 10000
@@ -113,6 +112,11 @@
 #define INT_WRITE_OP_DONE_EN		(1 << 1)
 #define INT_READ_OP_EN			(1 << 0)
 
+enum mxcmci_type {
+	IMX21_MMC,
+	IMX31_MMC,
+};
+
 struct mxcmci_host {
 	struct mmc_host		*mmc;
 	struct resource		*res;
@@ -153,7 +157,26 @@ struct mxcmci_host {
 	struct imx_dma_data	dma_data;
 
 	struct timer_list	watchdog;
+	enum mxcmci_type	devtype;
+};
+
+static struct platform_device_id mxcmci_devtype[] = {
+	{
+		.name = "imx21-mmc",
+		.driver_data = IMX21_MMC,
+	}, {
+		.name = "imx31-mmc",
+		.driver_data = IMX31_MMC,
+	}, {
+		/* sentinel */
+	}
 };
+MODULE_DEVICE_TABLE(platform, mxcmci_devtype);
+
+static inline int is_imx31_mmc(struct mxcmci_host *host)
+{
+	return host->devtype == IMX31_MMC;
+}
 
 static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);
 
@@ -843,6 +866,8 @@ static void mxcmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 
 static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
 {
+	struct mxcmci_host *mxcmci = mmc_priv(host);
+
 	/*
 	 * MX3 SoCs have a silicon bug which corrupts CRC calculation of
 	 * multi-block transfers when connected SDIO peripheral doesn't
@@ -850,7 +875,7 @@ static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
 	 * One way to prevent this is to only allow 1-bit transfers.
 	 */
 
-	if (cpu_is_mx3() && card->type == MMC_TYPE_SDIO)
+	if (is_imx31_mmc(mxcmci) && card->type == MMC_TYPE_SDIO)
 		host->caps &= ~MMC_CAP_4_BIT_DATA;
 	else
 		host->caps |= MMC_CAP_4_BIT_DATA;
@@ -948,6 +973,7 @@ static int mxcmci_probe(struct platform_device *pdev)
 
 	host->mmc = mmc;
 	host->pdata = pdev->dev.platform_data;
+	host->devtype = pdev->id_entry->driver_data;
 	spin_lock_init(&host->lock);
 
 	mxcmci_init_ocr(host);
@@ -1120,6 +1146,7 @@ static const struct dev_pm_ops mxcmci_pm_ops = {
 static struct platform_driver mxcmci_driver = {
 	.probe		= mxcmci_probe,
 	.remove		= mxcmci_remove,
+	.id_table	= mxcmci_devtype,
 	.driver		= {
 		.name		= DRIVER_NAME,
 		.owner		= THIS_MODULE,