OMAP3: Clean up MMC code

Clean up OMAP3 MMC code:

* Convert register access to struct & readx/writex style
* Replace hardcode values by macros
* Remove macro defined twice

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>

3 files changed, 114 insertions, 90 deletions

diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c
index 399c57b..e90db7e 100644
--- a/drivers/mmc/omap3_mmc.c
+++ b/drivers/mmc/omap3_mmc.c
@@ -28,6 +28,7 @@
 #include <mmc.h>
 #include <part.h>
 #include <i2c.h>
+#include <asm/io.h>
 #include <asm/arch/mmc.h>
 
 const unsigned short mmc_transspeed_val[15][4] = {
@@ -50,6 +51,7 @@ const unsigned short mmc_transspeed_val[15][4] = {
 
 mmc_card_data cur_card_data;
 static block_dev_desc_t mmc_blk_dev;
+static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC_BASE;
 
 block_dev_desc_t *mmc_get_dev(int dev)
 {
@@ -60,55 +62,49 @@ void twl4030_mmc_config(void)
 {
 	unsigned char data;
 
-	data = 0x20;
-	i2c_write(0x4B, 0x82, 1, &data, 1);
-	data = 0x2;
-	i2c_write(0x4B, 0x85, 1, &data, 1);
+	data = DEV_GRP_P1;
+	i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEV_GRP, 1, &data, 1);
+	data = VMMC1_VSEL_30;
+	i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEDICATED, 1, &data, 1);
 }
 
 unsigned char mmc_board_init(void)
 {
-	unsigned int value = 0;
+	t2_t *t2_base = (t2_t *)T2_BASE;
 
 	twl4030_mmc_config();
 
-	value = CONTROL_PBIAS_LITE;
-	CONTROL_PBIAS_LITE = value | (1 << 2) | (1 << 1) | (1 << 9);
+	writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 |
+		PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
+		&t2_base->pbias_lite);
 
-	value = CONTROL_DEV_CONF0;
-	CONTROL_DEV_CONF0 = value | (1 << 24);
+	writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
+		&t2_base->devconf0);
 
 	return 1;
 }
 
 void mmc_init_stream(void)
 {
-	volatile unsigned int mmc_stat;
+	writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
 
-	OMAP_HSMMC_CON |= INIT_INITSTREAM;
+	writel(MMC_CMD0, &mmc_base->cmd);
+	while (!(readl(&mmc_base->stat) & CC_MASK));
 
-	OMAP_HSMMC_CMD = MMC_CMD0;
-	do {
-		mmc_stat = OMAP_HSMMC_STAT;
-	} while (!(mmc_stat & CC_MASK));
-
-	OMAP_HSMMC_STAT = CC_MASK;
+	writel(CC_MASK, &mmc_base->stat);
 
-	OMAP_HSMMC_CMD = MMC_CMD0;
-	do {
-		mmc_stat = OMAP_HSMMC_STAT;
-	} while (!(mmc_stat & CC_MASK));
+	writel(MMC_CMD0, &mmc_base->cmd);
+	while (!(readl(&mmc_base->stat) & CC_MASK));
 
-	OMAP_HSMMC_STAT = OMAP_HSMMC_STAT;
-	OMAP_HSMMC_CON &= ~INIT_INITSTREAM;
+	writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
 }
 
 unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
 {
 	unsigned int val;
 
-	mmc_reg_out(OMAP_HSMMC_SYSCTL, (ICE_MASK | DTO_MASK | CEN_MASK),
-		    (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
+	mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
+			(ICE_STOP | DTO_15THDTO | CEN_DISABLE));
 
 	switch (iclk) {
 	case CLK_INITSEQ:
@@ -123,12 +119,12 @@ unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
 	default:
 		return 0;
 	}
-	mmc_reg_out(OMAP_HSMMC_SYSCTL,
-		    ICE_MASK | CLKD_MASK, (val << CLKD_OFFSET) | ICE_OSCILLATE);
+	mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
+			(val << CLKD_OFFSET) | ICE_OSCILLATE);
 
-	while ((OMAP_HSMMC_SYSCTL & ICS_MASK) == ICS_NOTREADY) ;
+	while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY);
 
-	OMAP_HSMMC_SYSCTL |= CEN_ENABLE;
+	writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
 	return 1;
 }
 
@@ -138,59 +134,63 @@ unsigned char mmc_init_setup(void)
 
 	mmc_board_init();
 
-	OMAP_HSMMC_SYSCONFIG |= MMC_SOFTRESET;
-	while ((OMAP_HSMMC_SYSSTATUS & RESETDONE) == 0) ;
+	writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
+		&mmc_base->sysconfig);
+	while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0);
 
-	OMAP_HSMMC_SYSCTL |= SOFTRESETALL;
-	while ((OMAP_HSMMC_SYSCTL & SOFTRESETALL) != 0x0) ;
+	writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
+	while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0);
 
-	OMAP_HSMMC_HCTL = DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0;
-	OMAP_HSMMC_CAPA |= VS30_3V0SUP | VS18_1V8SUP;
+	writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
+	writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
+		&mmc_base->capa);
 
-	reg_val = OMAP_HSMMC_CON & RESERVED_MASK;
+	reg_val = readl(&mmc_base->con) & RESERVED_MASK;
 
-	OMAP_HSMMC_CON = CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH |
-		CDP_ACTIVEHIGH | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC |
-		STR_BLOCK | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN;
+	writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
+		MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
+		HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
 
 	mmc_clock_config(CLK_INITSEQ, 0);
-	OMAP_HSMMC_HCTL |= SDBP_PWRON;
+	writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
 
-	OMAP_HSMMC_IE = 0x307f0033;
+	writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
+		IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
+		&mmc_base->ie);
 
 	mmc_init_stream();
 	return 1;
 }
 
 unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
-			   unsigned int *response)
+				unsigned int *response)
 {
-	volatile unsigned int mmc_stat;
+	unsigned int mmc_stat;
 
-	while ((OMAP_HSMMC_PSTATE & DATI_MASK) == DATI_CMDDIS) ;
+	while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS);
 
-	OMAP_HSMMC_BLK = BLEN_512BYTESLEN | NBLK_STPCNT;
-	OMAP_HSMMC_STAT = 0xFFFFFFFF;
-	OMAP_HSMMC_ARG = arg;
-	OMAP_HSMMC_CMD = cmd | CMD_TYPE_NORMAL | CICE_NOCHECK |
-	    CCCE_NOCHECK | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE |
-	    DE_DISABLE;
+	writel(BLEN_512BYTESLEN | NBLK_STPCNT, &mmc_base->blk);
+	writel(0xFFFFFFFF, &mmc_base->stat);
+	writel(arg, &mmc_base->arg);
+	writel(cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
+		MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE,
+		&mmc_base->cmd);
 
 	while (1) {
 		do {
-			mmc_stat = OMAP_HSMMC_STAT;
+			mmc_stat = readl(&mmc_base->stat);
 		} while (mmc_stat == 0);
 
 		if ((mmc_stat & ERRI_MASK) != 0)
 			return (unsigned char) mmc_stat;
 
 		if (mmc_stat & CC_MASK) {
-			OMAP_HSMMC_STAT = CC_MASK;
-			response[0] = OMAP_HSMMC_RSP10;
+			writel(CC_MASK, &mmc_base->stat);
+			response[0] = readl(&mmc_base->rsp10);
 			if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) {
-				response[1] = OMAP_HSMMC_RSP32;
-				response[2] = OMAP_HSMMC_RSP54;
-				response[3] = OMAP_HSMMC_RSP76;
+				response[1] = readl(&mmc_base->rsp32);
+				response[2] = readl(&mmc_base->rsp54);
+				response[3] = readl(&mmc_base->rsp76);
 			}
 			break;
 		}
@@ -200,7 +200,7 @@ unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
 
 unsigned char mmc_read_data(unsigned int *output_buf)
 {
-	volatile unsigned int mmc_stat;
+	unsigned int mmc_stat;
 	unsigned int read_count = 0;
 
 	/*
@@ -208,7 +208,7 @@ unsigned char mmc_read_data(unsigned int *output_buf)
 	 */
 	while (1) {
 		do {
-			mmc_stat = OMAP_HSMMC_STAT;
+			mmc_stat = readl(&mmc_base->stat);
 		} while (mmc_stat == 0);
 
 		if ((mmc_stat & ERRI_MASK) != 0)
@@ -217,19 +217,22 @@ unsigned char mmc_read_data(unsigned int *output_buf)
 		if (mmc_stat & BRR_MASK) {
 			unsigned int k;
 
-			OMAP_HSMMC_STAT |= BRR_MASK;
+			writel(readl(&mmc_base->stat) | BRR_MASK,
+				&mmc_base->stat);
 			for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) {
-				*output_buf = OMAP_HSMMC_DATA;
+				*output_buf = readl(&mmc_base->data);
 				output_buf++;
 				read_count += 4;
 			}
 		}
 
 		if (mmc_stat & BWR_MASK)
-			OMAP_HSMMC_STAT |= BWR_MASK;
+			writel(readl(&mmc_base->stat) | BWR_MASK,
+				&mmc_base->stat);
 
 		if (mmc_stat & TC_MASK) {
-			OMAP_HSMMC_STAT |= TC_MASK;
+			writel(readl(&mmc_base->stat) | TC_MASK,
+				&mmc_base->stat);
 			break;
 		}
 	}
@@ -273,8 +276,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
 		mmc_card_cur->card_type = MMC_CARD;
 		ocr_value |= MMC_OCR_REG_ACCESS_MODE_SECTOR;
 		ret_cmd41 = MMC_CMD1;
-		OMAP_HSMMC_CON &= ~OD;
-		OMAP_HSMMC_CON |= OPENDRAIN;
+		writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
+		writel(readl(&mmc_base->con) | OPENDRAIN, &mmc_base->con);
 	}
 
 	argument = ocr_value;
@@ -342,8 +345,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
 		mmc_card_cur->RCA = ((mmc_resp_r6 *) resp)->newpublishedrca;
 	}
 
-	OMAP_HSMMC_CON &= ~OD;
-	OMAP_HSMMC_CON |= NOOPENDRAIN;
+	writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
+	writel(readl(&mmc_base->con) | NOOPENDRAIN, &mmc_base->con);
 	return 1;
 }
 
@@ -518,7 +521,7 @@ unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt,
 			void *dst)
 {
 	omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data,
-			   (unsigned long *) dst);
+				(unsigned long *) dst);
 	return 1;
 }
 
diff --git a/include/asm-arm/arch-omap3/mmc_host_def.h b/include/asm-arm/arch-omap3/mmc_host_def.h
index dfb376a..aa751c9 100644
--- a/include/asm-arm/arch-omap3/mmc_host_def.h
+++ b/include/asm-arm/arch-omap3/mmc_host_def.h
@@ -25,30 +25,50 @@
 #ifndef MMC_HOST_DEF_H
 #define MMC_HOST_DEF_H
 
+/* T2 Register definitions */
+#define T2_BASE			0x48002000
+
+typedef struct t2 {
+	unsigned char res1[0x274];
+	unsigned int devconf0;		/* 0x274 */
+	unsigned char res2[0x2A8];
+	unsigned int pbias_lite;	/* 0x520 */
+} t2_t;
+
+#define MMCSDIO1ADPCLKISEL		(1 << 24)
+
+#define PBIASLITEPWRDNZ0		(1 << 1)
+#define PBIASSPEEDCTRL0			(1 << 2)
+#define PBIASLITEPWRDNZ1		(1 << 9)
+
 /*
  * OMAP HSMMC register definitions
  */
-#define OMAP_HSMMC_SYSCONFIG		(*(unsigned int *) 0x4809C010)
-#define OMAP_HSMMC_SYSSTATUS		(*(unsigned int *) 0x4809C014)
-#define OMAP_HSMMC_CON			(*(unsigned int *) 0x4809C02C)
-#define OMAP_HSMMC_BLK			(*(unsigned int *) 0x4809C104)
-#define OMAP_HSMMC_ARG			(*(unsigned int *) 0x4809C108)
-#define OMAP_HSMMC_CMD			(*(unsigned int *) 0x4809C10C)
-#define OMAP_HSMMC_RSP10		(*(unsigned int *) 0x4809C110)
-#define OMAP_HSMMC_RSP32		(*(unsigned int *) 0x4809C114)
-#define OMAP_HSMMC_RSP54		(*(unsigned int *) 0x4809C118)
-#define OMAP_HSMMC_RSP76		(*(unsigned int *) 0x4809C11C)
-#define OMAP_HSMMC_DATA			(*(unsigned int *) 0x4809C120)
-#define OMAP_HSMMC_PSTATE		(*(unsigned int *) 0x4809C124)
-#define OMAP_HSMMC_HCTL			(*(unsigned int *) 0x4809C128)
-#define OMAP_HSMMC_SYSCTL		(*(unsigned int *) 0x4809C12C)
-#define OMAP_HSMMC_STAT			(*(unsigned int *) 0x4809C130)
-#define OMAP_HSMMC_IE			(*(unsigned int *) 0x4809C134)
-#define OMAP_HSMMC_CAPA			(*(unsigned int *) 0x4809C140)
+#define OMAP_HSMMC_BASE		0x4809C000
 
-/* T2 Register definitions */
-#define CONTROL_DEV_CONF0		(*(unsigned int *) 0x48002274)
-#define CONTROL_PBIAS_LITE		(*(unsigned int *) 0x48002520)
+typedef struct hsmmc {
+	unsigned char res1[0x10];
+	unsigned int sysconfig;		/* 0x10 */
+	unsigned int sysstatus;		/* 0x14 */
+	unsigned char res2[0x14];
+	unsigned int con;		/* 0x2C */
+	unsigned char res3[0xD4];
+	unsigned int blk;		/* 0x104 */
+	unsigned int arg;		/* 0x108 */
+	unsigned int cmd;		/* 0x10C */
+	unsigned int rsp10;		/* 0x110 */
+	unsigned int rsp32;		/* 0x114 */
+	unsigned int rsp54;		/* 0x118 */
+	unsigned int rsp76;		/* 0x11C */
+	unsigned int data;		/* 0x120 */
+	unsigned int pstate;		/* 0x124 */
+	unsigned int hctl;		/* 0x128 */
+	unsigned int sysctl;		/* 0x12C */
+	unsigned int stat;		/* 0x130 */
+	unsigned int ie;		/* 0x134 */
+	unsigned char res4[0x8];
+	unsigned int capa;		/* 0x140 */
+} hsmmc_t;
 
 /*
  * OMAP HS MMC Bit definitions
@@ -159,8 +179,6 @@ typedef struct {
 } mmc_card_data;
 
 #define mmc_reg_out(addr, mask, val)\
-	(addr) = (((addr)) & (~(mask))) | ((val) & (mask));
-#define mmc_reg_out(addr, mask, val)\
-	(addr) = (((addr)) & (~(mask))) | ((val) & (mask));
+	writel((readl(addr) & (~(mask))) | ((val) & (mask)), (addr))
 
 #endif /* MMC_HOST_DEF_H */
diff --git a/include/asm-arm/arch-omap3/omap3.h b/include/asm-arm/arch-omap3/omap3.h
index 0ddbd66..02e36d7 100644
--- a/include/asm-arm/arch-omap3/omap3.h
+++ b/include/asm-arm/arch-omap3/omap3.h
@@ -203,6 +203,8 @@ typedef struct gpio {
 #define VAUX2_DEDICATED		0x79
 #define VAUX3_DEV_GRP		0x7A
 #define VAUX3_DEDICATED		0x7D
+#define VMMC1_DEV_GRP		0x82
+#define VMMC1_DEDICATED		0x85
 #define VPLL2_DEV_GRP		0x8E
 #define VPLL2_DEDICATED		0x91
 #define VDAC_DEV_GRP		0x96
@@ -215,5 +217,6 @@ typedef struct gpio {
 #define VAUX3_VSEL_28		0x03
 #define VPLL2_VSEL_18		0x05
 #define VDAC_VSEL_18		0x03
+#define VMMC1_VSEL_30		0x02
 
 #endif