mci: Add i.MX esdhc support

This adds a driver for the esdhc controller found on Freescale
i.MX25/35/51 SoCs.

This code is based on the U-Boot driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 164 insertions, 0 deletions

diff --git a/drivers/mci/imx-esdhc.h b/drivers/mci/imx-esdhc.h
new file mode 100644
index 0000000000..19fed5aebf
--- /dev/null
+++ b/drivers/mci/imx-esdhc.h
@@ -0,0 +1,164 @@
+/*
+ * FSL SD/MMC Defines
+ *-------------------------------------------------------------------
+ *
+ * Copyright 2007-2008,2010 Freescale Semiconductor, Inc
+ *
+ * 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  __FSL_ESDHC_H__
+#define	__FSL_ESDHC_H__
+
+#include <errno.h>
+#include <asm/byteorder.h>
+
+/* FSL eSDHC-specific constants */
+#define SYSCTL			0x0002e02c
+#define SYSCTL_INITA		0x08000000
+#define SYSCTL_TIMEOUT_MASK	0x000f0000
+#define SYSCTL_CLOCK_MASK	0x0000fff0
+#define SYSCTL_RSTA		0x01000000
+#define SYSCTL_CKEN		0x00000008
+#define SYSCTL_PEREN		0x00000004
+#define SYSCTL_HCKEN		0x00000002
+#define SYSCTL_IPGEN		0x00000001
+#define SYSCTL_RSTA		0x01000000
+
+#define IRQSTAT			0x0002e030
+#define IRQSTAT_DMAE		(0x10000000)
+#define IRQSTAT_AC12E		(0x01000000)
+#define IRQSTAT_DEBE		(0x00400000)
+#define IRQSTAT_DCE		(0x00200000)
+#define IRQSTAT_DTOE		(0x00100000)
+#define IRQSTAT_CIE		(0x00080000)
+#define IRQSTAT_CEBE		(0x00040000)
+#define IRQSTAT_CCE		(0x00020000)
+#define IRQSTAT_CTOE		(0x00010000)
+#define IRQSTAT_CINT		(0x00000100)
+#define IRQSTAT_CRM		(0x00000080)
+#define IRQSTAT_CINS		(0x00000040)
+#define IRQSTAT_BRR		(0x00000020)
+#define IRQSTAT_BWR		(0x00000010)
+#define IRQSTAT_DINT		(0x00000008)
+#define IRQSTAT_BGE		(0x00000004)
+#define IRQSTAT_TC		(0x00000002)
+#define IRQSTAT_CC		(0x00000001)
+
+#define CMD_ERR		(IRQSTAT_CIE | IRQSTAT_CEBE | IRQSTAT_CCE)
+#define DATA_ERR	(IRQSTAT_DEBE | IRQSTAT_DCE | IRQSTAT_DTOE)
+
+#define IRQSTATEN		0x0002e034
+#define IRQSTATEN_DMAE		(0x10000000)
+#define IRQSTATEN_AC12E		(0x01000000)
+#define IRQSTATEN_DEBE		(0x00400000)
+#define IRQSTATEN_DCE		(0x00200000)
+#define IRQSTATEN_DTOE		(0x00100000)
+#define IRQSTATEN_CIE		(0x00080000)
+#define IRQSTATEN_CEBE		(0x00040000)
+#define IRQSTATEN_CCE		(0x00020000)
+#define IRQSTATEN_CTOE		(0x00010000)
+#define IRQSTATEN_CINT		(0x00000100)
+#define IRQSTATEN_CRM		(0x00000080)
+#define IRQSTATEN_CINS		(0x00000040)
+#define IRQSTATEN_BRR		(0x00000020)
+#define IRQSTATEN_BWR		(0x00000010)
+#define IRQSTATEN_DINT		(0x00000008)
+#define IRQSTATEN_BGE		(0x00000004)
+#define IRQSTATEN_TC		(0x00000002)
+#define IRQSTATEN_CC		(0x00000001)
+
+#define PRSSTAT			0x0002e024
+#define PRSSTAT_CLSL		(0x00800000)
+#define PRSSTAT_WPSPL		(0x00080000)
+#define PRSSTAT_CDPL		(0x00040000)
+#define PRSSTAT_CINS		(0x00010000)
+#define PRSSTAT_BREN		(0x00000800)
+#define PRSSTAT_BWEN		(0x00000400)
+#define PRSSTAT_DLA		(0x00000004)
+#define PRSSTAT_CICHB		(0x00000002)
+#define PRSSTAT_CIDHB		(0x00000001)
+
+#define PROCTL			0x0002e028
+#define PROCTL_INIT		0x00000020
+#define PROCTL_DTW_4		0x00000002
+#define PROCTL_DTW_8		0x00000004
+
+#define CMDARG			0x0002e008
+
+#define XFERTYP			0x0002e00c
+#define XFERTYP_CMD(x)		((x & 0x3f) << 24)
+#define XFERTYP_CMDTYP_NORMAL	0x0
+#define XFERTYP_CMDTYP_SUSPEND	0x00400000
+#define XFERTYP_CMDTYP_RESUME	0x00800000
+#define XFERTYP_CMDTYP_ABORT	0x00c00000
+#define XFERTYP_DPSEL		0x00200000
+#define XFERTYP_CICEN		0x00100000
+#define XFERTYP_CCCEN		0x00080000
+#define XFERTYP_RSPTYP_NONE	0
+#define XFERTYP_RSPTYP_136	0x00010000
+#define XFERTYP_RSPTYP_48	0x00020000
+#define XFERTYP_RSPTYP_48_BUSY	0x00030000
+#define XFERTYP_MSBSEL		0x00000020
+#define XFERTYP_DTDSEL		0x00000010
+#define XFERTYP_AC12EN		0x00000004
+#define XFERTYP_BCEN		0x00000002
+#define XFERTYP_DMAEN		0x00000001
+
+#define CINS_TIMEOUT		1000
+#define PIO_TIMEOUT		100000
+
+#define DSADDR		0x2e004
+
+#define CMDRSP0		0x2e010
+#define CMDRSP1		0x2e014
+#define CMDRSP2		0x2e018
+#define CMDRSP3		0x2e01c
+
+#define DATPORT		0x2e020
+
+#define WML		0x2e044
+#define WML_WRITE	0x00010000
+#define WML_RD_WML_MASK	0xff
+#define WML_WR_WML_MASK	0xff0000
+
+#define BLKATTR		0x2e004
+#define BLKATTR_CNT(x)	((x & 0xffff) << 16)
+#define BLKATTR_SIZE(x)	(x & 0x1fff)
+#define MAX_BLK_CNT	0x7fff	/* so malloc will have enough room with 32M */
+
+#define ESDHC_HOSTCAPBLT_VS18	0x04000000
+#define ESDHC_HOSTCAPBLT_VS30	0x02000000
+#define ESDHC_HOSTCAPBLT_VS33	0x01000000
+#define ESDHC_HOSTCAPBLT_SRS	0x00800000
+#define ESDHC_HOSTCAPBLT_DMAS	0x00400000
+#define ESDHC_HOSTCAPBLT_HSS	0x00200000
+
+struct fsl_esdhc_cfg {
+	u32	esdhc_base;
+	u32	no_snoop;
+};
+
+#define esdhc_read32(a)			readl(a)
+#define esdhc_write32(a, v)		writel(v,a)
+#define esdhc_clrsetbits32(a, c, s)	writel((readl(a) & ~(c)) | (s), (a))
+#define esdhc_clrbits32(a, c)		writel(readl(a) & ~(c), (a))
+#define esdhc_setbits32(a, s)		writel(readl(a) | (s), (a))
+
+#endif  /* __FSL_ESDHC_H__ */