mmc: dw-mmc: support DesignWare MMC Controller

Support the DesginWare MMC Controller.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Rajeshawari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

1 files changed, 191 insertions, 0 deletions

diff --git a/include/dwmmc.h b/include/dwmmc.h
new file mode 100644
index 0000000..c8b1d40
--- /dev/null
+++ b/include/dwmmc.h
@@ -0,0 +1,191 @@
+/*
+ * (C) Copyright 2012 SAMSUNG Electronics
+ * Jaehoon Chung <jh80.chung@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,  MA 02111-1307 USA
+ *
+ */
+
+#ifndef __DWMMC_HW_H
+#define __DWMMC_HW_H
+
+#include <asm/io.h>
+#include <mmc.h>
+
+#define DWMCI_CTRL		0x000
+#define	DWMCI_PWREN		0x004
+#define DWMCI_CLKDIV		0x008
+#define DWMCI_CLKSRC		0x00C
+#define DWMCI_CLKENA		0x010
+#define DWMCI_TMOUT		0x014
+#define DWMCI_CTYPE		0x018
+#define DWMCI_BLKSIZ		0x01C
+#define DWMCI_BYTCNT		0x020
+#define DWMCI_INTMASK		0x024
+#define DWMCI_CMDARG		0x028
+#define DWMCI_CMD		0x02C
+#define DWMCI_RESP0		0x030
+#define DWMCI_RESP1		0x034
+#define DWMCI_RESP2		0x038
+#define DWMCI_RESP3		0x03C
+#define DWMCI_MINTSTS		0x040
+#define DWMCI_RINTSTS		0x044
+#define DWMCI_STATUS		0x048
+#define DWMCI_FIFOTH		0x04C
+#define DWMCI_CDETECT		0x050
+#define DWMCI_WRTPRT		0x054
+#define DWMCI_GPIO		0x058
+#define DWMCI_TCMCNT		0x05C
+#define DWMCI_TBBCNT		0x060
+#define DWMCI_DEBNCE		0x064
+#define DWMCI_USRID		0x068
+#define DWMCI_VERID		0x06C
+#define DWMCI_HCON		0x070
+#define DWMCI_UHS_REG		0x074
+#define DWMCI_BMOD		0x080
+#define DWMCI_PLDMND		0x084
+#define DWMCI_DBADDR		0x088
+#define DWMCI_IDSTS		0x08C
+#define DWMCI_IDINTEN		0x090
+#define DWMCI_DSCADDR		0x094
+#define DWMCI_BUFADDR		0x098
+#define DWMCI_DATA		0x200
+
+/* Interrupt Mask register */
+#define DWMCI_INTMSK_ALL	0xffffffff
+#define DWMCI_INTMSK_RE		(1 << 1)
+#define DWMCI_INTMSK_CDONE	(1 << 2)
+#define DWMCI_INTMSK_DTO	(1 << 3)
+#define DWMCI_INTMSK_TXDR	(1 << 4)
+#define DWMCI_INTMSK_RXDR	(1 << 5)
+#define DWMCI_INTMSK_DCRC	(1 << 7)
+#define DWMCI_INTMSK_RTO	(1 << 8)
+#define DWMCI_INTMSK_DRTO	(1 << 9)
+#define DWMCI_INTMSK_HTO	(1 << 10)
+#define DWMCI_INTMSK_FRUN	(1 << 11)
+#define DWMCI_INTMSK_HLE	(1 << 12)
+#define DWMCI_INTMSK_SBE	(1 << 13)
+#define DWMCI_INTMSK_ACD	(1 << 14)
+#define DWMCI_INTMSK_EBE	(1 << 15)
+
+/* Raw interrupt Regsiter */
+#define DWMCI_DATA_ERR	(DWMCI_INTMSK_EBE | DWMCI_INTMSK_SBE | DWMCI_INTMSK_HLE |\
+			DWMCI_INTMSK_FRUN | DWMCI_INTMSK_EBE | DWMCI_INTMSK_DCRC)
+#define DWMCI_DATA_TOUT	(DWMCI_INTMSK_HTO | DWMCI_INTMSK_DRTO)
+/* CTRL register */
+#define DWMCI_CTRL_RESET	(1 << 0)
+#define DWMCI_CTRL_FIFO_RESET	(1 << 1)
+#define DWMCI_CTRL_DMA_RESET	(1 << 2)
+#define DWMCI_DMA_EN		(1 << 5)
+#define DWMCI_CTRL_SEND_AS_CCSD	(1 << 10)
+#define DWMCI_IDMAC_EN		(1 << 25)
+#define DWMCI_RESET_ALL		(DWMCI_CTRL_RESET | DWMCI_CTRL_FIFO_RESET |\
+				DWMCI_CTRL_DMA_RESET)
+
+/* CMD register */
+#define DWMCI_CMD_RESP_EXP	(1 << 6)
+#define DWMCI_CMD_RESP_LENGTH	(1 << 7)
+#define DWMCI_CMD_CHECK_CRC	(1 << 8)
+#define DWMCI_CMD_DATA_EXP	(1 << 9)
+#define DWMCI_CMD_RW		(1 << 10)
+#define DWMCI_CMD_SEND_STOP	(1 << 12)
+#define DWMCI_CMD_ABORT_STOP	(1 << 14)
+#define DWMCI_CMD_PRV_DAT_WAIT	(1 << 13)
+#define DWMCI_CMD_UPD_CLK	(1 << 21)
+#define DWMCI_CMD_USE_HOLD_REG	(1 << 29)
+#define DWMCI_CMD_START		(1 << 31)
+
+/* CLKENA register */
+#define DWMCI_CLKEN_ENABLE	(1 << 0)
+#define DWMCI_CLKEN_LOW_PWR	(1 << 16)
+
+/* Card-type registe */
+#define DWMCI_CTYPE_1BIT	0
+#define DWMCI_CTYPE_4BIT	(1 << 0)
+#define DWMCI_CTYPE_8BIT	(1 << 16)
+
+/* Status Register */
+#define DWMCI_BUSY		(1 << 9)
+
+/* FIFOTH Register */
+#define MSIZE(x)		((x) << 28)
+#define RX_WMARK(x)		((x) << 16)
+#define TX_WMARK(x)		(x)
+
+#define DWMCI_IDMAC_OWN		(1 << 31)
+#define DWMCI_IDMAC_CH		(1 << 4)
+#define DWMCI_IDMAC_FS		(1 << 3)
+#define DWMCI_IDMAC_LD		(1 << 2)
+
+/*  Bus Mode Register */
+#define DWMCI_BMOD_IDMAC_RESET	(1 << 0)
+#define DWMCI_BMOD_IDMAC_FB	(1 << 1)
+#define DWMCI_BMOD_IDMAC_EN	(1 << 7)
+
+struct dwmci_host {
+	char *name;
+	void *ioaddr;
+	unsigned int quirks;
+	unsigned int caps;
+	unsigned int version;
+	unsigned int clock;
+	unsigned int bus_hz;
+	int dev_index;
+	int buswidth;
+	u32 fifoth_val;
+	struct mmc *mmc;
+
+	void (*clksel)(struct dwmci_host *host);
+	unsigned int (*mmc_clk)(int dev_index);
+};
+
+struct dwmci_idmac {
+	u32 flags;
+	u32 cnt;
+	u32 addr;
+	u32 next_addr;
+};
+
+static inline void dwmci_writel(struct dwmci_host *host, int reg, u32 val)
+{
+	writel(val, host->ioaddr + reg);
+}
+
+static inline void dwmci_writew(struct dwmci_host *host, int reg, u16 val)
+{
+	writew(val, host->ioaddr + reg);
+}
+
+static inline void dwmci_writeb(struct dwmci_host *host, int reg, u8 val)
+{
+	writeb(val, host->ioaddr + reg);
+}
+static inline u32 dwmci_readl(struct dwmci_host *host, int reg)
+{
+	return readl(host->ioaddr + reg);
+}
+
+static inline u16 dwmci_readw(struct dwmci_host *host, int reg)
+{
+	return readw(host->ioaddr + reg);
+}
+
+static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
+{
+	return readb(host->ioaddr + reg);
+}
+
+int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
+#endif	/* __DWMMC_HW_H */