mmc: rmobile: Add SDHC support for Renesas rmobile ARM SoC

This adds Renesas rmobile ARM SoC's SD/MMC host support.
This drivers tested with Gose board and Koelsch board.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>

6 files changed, 192 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-rmobile/r8a7790.h b/arch/arm/include/asm/arch-rmobile/r8a7790.h
index 132d58c117..748b802546 100644
--- a/arch/arm/include/asm/arch-rmobile/r8a7790.h
+++ b/arch/arm/include/asm/arch-rmobile/r8a7790.h
@@ -28,6 +28,12 @@
 #define MSTP10_BITS	0xFFFEFFE0
 #define MSTP11_BITS	0x00000000
 
+/* SDHI */
+#define CONFIG_SYS_SH_SDHI1_BASE 0xEE120000
+#define CONFIG_SYS_SH_SDHI2_BASE 0xEE140000
+#define CONFIG_SYS_SH_SDHI3_BASE 0xEE160000
+#define CONFIG_SYS_SH_SDHI_NR_CHANNEL 4
+
 #define R8A7790_CUT_ES2X	2
 #define IS_R8A7790_ES2()	\
 	(rmobile_get_cpu_rev_integer() == R8A7790_CUT_ES2X)
diff --git a/arch/arm/include/asm/arch-rmobile/r8a7791.h b/arch/arm/include/asm/arch-rmobile/r8a7791.h
index d2cbcd761d..1d06b651f4 100644
--- a/arch/arm/include/asm/arch-rmobile/r8a7791.h
+++ b/arch/arm/include/asm/arch-rmobile/r8a7791.h
@@ -17,6 +17,11 @@
 /* SH-I2C */
 #define CONFIG_SYS_I2C_SH_BASE2	0xE60B0000
 
+/* SDHI */
+#define CONFIG_SYS_SH_SDHI1_BASE 0xEE140000
+#define CONFIG_SYS_SH_SDHI2_BASE 0xEE160000
+#define CONFIG_SYS_SH_SDHI_NR_CHANNEL 3
+
 #define DBSC3_1_QOS_R0_BASE	0xE67A1000
 #define DBSC3_1_QOS_R1_BASE	0xE67A1100
 #define DBSC3_1_QOS_R2_BASE	0xE67A1200
diff --git a/arch/arm/include/asm/arch-rmobile/r8a7793.h b/arch/arm/include/asm/arch-rmobile/r8a7793.h
index 1abdeb7450..3efc62a1a9 100644
--- a/arch/arm/include/asm/arch-rmobile/r8a7793.h
+++ b/arch/arm/include/asm/arch-rmobile/r8a7793.h
@@ -18,6 +18,11 @@
 /* SH-I2C */
 #define CONFIG_SYS_I2C_SH_BASE2	0xE60B0000
 
+/* SDHI */
+#define CONFIG_SYS_SH_SDHI1_BASE 0xEE140000
+#define CONFIG_SYS_SH_SDHI2_BASE 0xEE160000
+#define CONFIG_SYS_SH_SDHI_NR_CHANNEL 3
+
 #define DBSC3_1_QOS_R0_BASE	0xE67A1000
 #define DBSC3_1_QOS_R1_BASE	0xE67A1100
 #define DBSC3_1_QOS_R2_BASE	0xE67A1200
diff --git a/arch/arm/include/asm/arch-rmobile/r8a7794.h b/arch/arm/include/asm/arch-rmobile/r8a7794.h
index d7c9004772..6d11fa479b 100644
--- a/arch/arm/include/asm/arch-rmobile/r8a7794.h
+++ b/arch/arm/include/asm/arch-rmobile/r8a7794.h
@@ -27,4 +27,9 @@
 #define MSTP10_BITS	0xFFFEFFE0
 #define MSTP11_BITS	0x000001C0
 
+/* SDHI */
+#define CONFIG_SYS_SH_SDHI1_BASE 0xEE140000
+#define CONFIG_SYS_SH_SDHI2_BASE 0xEE160000
+#define CONFIG_SYS_SH_SDHI_NR_CHANNEL 3
+
 #endif /* __ASM_ARCH_R8A7794_H */
diff --git a/arch/arm/include/asm/arch-rmobile/rcar-base.h b/arch/arm/include/asm/arch-rmobile/rcar-base.h
index 23c4bba6ed..d594cd77c1 100644
--- a/arch/arm/include/asm/arch-rmobile/rcar-base.h
+++ b/arch/arm/include/asm/arch-rmobile/rcar-base.h
@@ -82,6 +82,9 @@
 #define CONFIG_SYS_RCAR_I2C2_BASE	0xE6530000
 #define CONFIG_SYS_RCAR_I2C3_BASE	0xE6540000
 
+/* SDHI */
+#define CONFIG_SYS_SH_SDHI0_BASE	0xEE100000
+
 #define S3C_BASE		0xE6784000
 #define S3C_INT_BASE		0xE6784A00
 #define S3C_MEDIA_BASE		0xE6784B00
diff --git a/arch/arm/include/asm/arch-rmobile/sh_sdhi.h b/arch/arm/include/asm/arch-rmobile/sh_sdhi.h
new file mode 100644
index 0000000000..057bf3f8bb
--- /dev/null
+++ b/arch/arm/include/asm/arch-rmobile/sh_sdhi.h
@@ -0,0 +1,168 @@
+/*
+ * drivers/mmc/sh-sdhi.h
+ *
+ * SD/MMC driver for Reneas rmobile ARM SoCs
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ * Copyright (C) 2008-2009 Renesas Solutions Corp.
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _SH_SDHI_H
+#define _SH_SDHI_H
+
+#define SDHI_CMD			(0x0000 >> 1)
+#define SDHI_PORTSEL			(0x0004 >> 1)
+#define SDHI_ARG0			(0x0008 >> 1)
+#define SDHI_ARG1			(0x000C >> 1)
+#define SDHI_STOP			(0x0010 >> 1)
+#define SDHI_SECCNT			(0x0014 >> 1)
+#define SDHI_RSP00			(0x0018 >> 1)
+#define SDHI_RSP01			(0x001C >> 1)
+#define SDHI_RSP02			(0x0020 >> 1)
+#define SDHI_RSP03			(0x0024 >> 1)
+#define SDHI_RSP04			(0x0028 >> 1)
+#define SDHI_RSP05			(0x002C >> 1)
+#define SDHI_RSP06			(0x0030 >> 1)
+#define SDHI_RSP07			(0x0034 >> 1)
+#define SDHI_INFO1			(0x0038 >> 1)
+#define SDHI_INFO2			(0x003C >> 1)
+#define SDHI_INFO1_MASK			(0x0040 >> 1)
+#define SDHI_INFO2_MASK			(0x0044 >> 1)
+#define SDHI_CLK_CTRL			(0x0048 >> 1)
+#define SDHI_SIZE			(0x004C >> 1)
+#define SDHI_OPTION			(0x0050 >> 1)
+#define SDHI_ERR_STS1			(0x0058 >> 1)
+#define SDHI_ERR_STS2			(0x005C >> 1)
+#define SDHI_BUF0			(0x0060 >> 1)
+#define SDHI_SDIO_MODE			(0x0068 >> 1)
+#define SDHI_SDIO_INFO1			(0x006C >> 1)
+#define SDHI_SDIO_INFO1_MASK		(0x0070 >> 1)
+#define SDHI_CC_EXT_MODE		(0x01B0 >> 1)
+#define SDHI_SOFT_RST			(0x01C0 >> 1)
+#define SDHI_VERSION			(0x01C4 >> 1)
+#define SDHI_HOST_MODE			(0x01C8 >> 1)
+#define SDHI_SDIF_MODE			(0x01CC >> 1)
+#define SDHI_EXT_SWAP			(0x01E0 >> 1)
+#define SDHI_SD_DMACR			(0x0324 >> 1)
+
+/* SDHI CMD VALUE */
+#define CMD_MASK			0x0000ffff
+#define SDHI_APP			0x0040
+#define SDHI_SD_APP_SEND_SCR		0x0073
+#define SDHI_SD_SWITCH			0x1C06
+
+/* SDHI_PORTSEL */
+#define USE_1PORT			(1 << 8) /* 1 port */
+
+/* SDHI_ARG */
+#define ARG0_MASK			0x0000ffff
+#define ARG1_MASK			0x0000ffff
+
+/* SDHI_STOP */
+#define STOP_SEC_ENABLE			(1 << 8)
+
+/* SDHI_INFO1 */
+#define INFO1_RESP_END			(1 << 0)
+#define INFO1_ACCESS_END		(1 << 2)
+#define INFO1_CARD_RE			(1 << 3)
+#define INFO1_CARD_IN			(1 << 4)
+#define INFO1_ISD0CD			(1 << 5)
+#define INFO1_WRITE_PRO			(1 << 7)
+#define INFO1_DATA3_CARD_RE		(1 << 8)
+#define INFO1_DATA3_CARD_IN		(1 << 9)
+#define INFO1_DATA3			(1 << 10)
+
+/* SDHI_INFO2 */
+#define INFO2_CMD_ERROR			(1 << 0)
+#define INFO2_CRC_ERROR			(1 << 1)
+#define INFO2_END_ERROR			(1 << 2)
+#define INFO2_TIMEOUT			(1 << 3)
+#define INFO2_BUF_ILL_WRITE		(1 << 4)
+#define INFO2_BUF_ILL_READ		(1 << 5)
+#define INFO2_RESP_TIMEOUT		(1 << 6)
+#define INFO2_SDDAT0			(1 << 7)
+#define INFO2_BRE_ENABLE		(1 << 8)
+#define INFO2_BWE_ENABLE		(1 << 9)
+#define INFO2_CBUSY			(1 << 14)
+#define INFO2_ILA			(1 << 15)
+#define INFO2_ALL_ERR			(0x807f)
+
+/* SDHI_INFO1_MASK */
+#define INFO1M_RESP_END			(1 << 0)
+#define INFO1M_ACCESS_END		(1 << 2)
+#define INFO1M_CARD_RE			(1 << 3)
+#define INFO1M_CARD_IN			(1 << 4)
+#define INFO1M_DATA3_CARD_RE		(1 << 8)
+#define INFO1M_DATA3_CARD_IN		(1 << 9)
+#define INFO1M_ALL			(0xffff)
+#define INFO1M_SET			(INFO1M_RESP_END |	\
+					INFO1M_ACCESS_END |	\
+					INFO1M_DATA3_CARD_RE |	\
+					INFO1M_DATA3_CARD_IN)
+
+/* SDHI_INFO2_MASK */
+#define INFO2M_CMD_ERROR		(1 << 0)
+#define INFO2M_CRC_ERROR		(1 << 1)
+#define INFO2M_END_ERROR		(1 << 2)
+#define INFO2M_TIMEOUT			(1 << 3)
+#define INFO2M_BUF_ILL_WRITE		(1 << 4)
+#define INFO2M_BUF_ILL_READ		(1 << 5)
+#define INFO2M_RESP_TIMEOUT		(1 << 6)
+#define INFO2M_BRE_ENABLE		(1 << 8)
+#define INFO2M_BWE_ENABLE		(1 << 9)
+#define INFO2M_ILA			(1 << 15)
+#define INFO2M_ALL			(0xffff)
+#define INFO2M_ALL_ERR			(0x807f)
+
+/* SDHI_CLK_CTRL */
+#define CLK_ENABLE			(1 << 8)
+
+/* SDHI_OPTION */
+#define OPT_BUS_WIDTH_1			(1 << 15)	/* bus width = 1 bit */
+
+/* SDHI_ERR_STS1 */
+#define ERR_STS1_CRC_ERROR		((1 << 11) | (1 << 10) | (1 << 9) | \
+					(1 << 8) | (1 << 5))
+#define ERR_STS1_CMD_ERROR		((1 << 4) | (1 << 3) | (1 << 2) | \
+					(1 << 1) | (1 << 0))
+
+/* SDHI_ERR_STS2 */
+#define ERR_STS2_RES_TIMEOUT		(1 << 0)
+#define ERR_STS2_RES_STOP_TIMEOUT	((1 << 0) | (1 << 1))
+#define ERR_STS2_SYS_ERROR		((1 << 6) | (1 << 5) | (1 << 4) | \
+					(1 << 3) | (1 << 2) | (1 << 1) | \
+					(1 << 0))
+
+/* SDHI_SDIO_MODE */
+#define SDIO_MODE_ON			(1 << 0)
+#define SDIO_MODE_OFF			(0 << 0)
+
+/* SDHI_SDIO_INFO1 */
+#define SDIO_INFO1_IOIRQ		(1 << 0)
+#define SDIO_INFO1_EXPUB52		(1 << 14)
+#define SDIO_INFO1_EXWT			(1 << 15)
+
+/* SDHI_SDIO_INFO1_MASK */
+#define SDIO_INFO1M_CLEAR		((1 << 1) | (1 << 2))
+#define SDIO_INFO1M_ON			((1 << 15) | (1 << 14) | (1 << 2) | \
+					 (1 << 1) | (1 << 0))
+
+/* SDHI_EXT_SWAP */
+#define SET_SWAP			((1 << 6) | (1 << 7))	/* SWAP */
+
+/* SDHI_SOFT_RST */
+#define SOFT_RST_ON			(0 << 0)
+#define SOFT_RST_OFF			(1 << 0)
+
+#define	CLKDEV_SD_DATA			25000000	/* 25 MHz */
+#define CLKDEV_HS_DATA			50000000	/* 50 MHz */
+#define CLKDEV_MMC_DATA			20000000	/* 20MHz */
+#define	CLKDEV_INIT			400000		/* 100 - 400 KHz */
+
+/* For quirk */
+#define SH_SDHI_QUIRK_16BIT_BUF		(1)
+int sh_sdhi_init(unsigned long addr, int ch, unsigned long quirks);
+
+#endif /* _SH_SDHI_H */