[ARM] 3456/1: AT91RM9200 support for 2.6 (MMC/SD driver)

Patch from Andrew Victor

This patch adds support for the MMC/SD card interface on the Atmel
AT91RM9200 processor.

Original driver was by Nick Randell, but a number of people have
subsequently worked on it. It's currently maintained by Malcolm Noyes.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 104 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91rm9200/at91rm9200_mci.h b/include/asm-arm/arch-at91rm9200/at91rm9200_mci.h
new file mode 100644
index 000000000000..f28636d61e39
--- /dev/null
+++ b/include/asm-arm/arch-at91rm9200/at91rm9200_mci.h
@@ -0,0 +1,104 @@
+/*
+ * include/asm-arm/arch-at91rm9200/at91rm9200_mci.h
+ *
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * MultiMedia Card Interface (MCI) registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * 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.
+ */
+
+#ifndef AT91RM9200_MCI_H
+#define AT91RM9200_MCI_H
+
+#define AT91_MCI_CR             0x00            /* Control Register */
+#define         AT91_MCI_MCIEN          (1 <<  0)       /* Multi-Media Interface Enable */
+#define         AT91_MCI_MCIDIS         (1 <<  1)       /* Multi-Media Interface Disable */
+#define         AT91_MCI_PWSEN          (1 <<  2)       /* Power Save Mode Enable */
+#define         AT91_MCI_PWSDIS         (1 <<  3)       /* Power Save Mode Disable */
+#define         AT91_MCI_SWRST          (1 <<  7)       /* Software Reset */
+
+#define AT91_MCI_MR             0x04            /* Mode Register */
+#define         AT91_MCI_CLKDIV         (0xff  <<  0)   /* Clock Divider */
+#define         AT91_MCI_PWSDIV         (3     <<  8)   /* Power Saving Divider */
+#define         AT91_MCI_PDCPADV        (1     << 14)   /* PDC Padding Value */
+#define         AT91_MCI_PDCMODE        (1     << 15)   /* PDC-orientated Mode */
+#define         AT91_MCI_BLKLEN         (0xfff << 18)   /* Data Block Length */
+
+#define AT91_MCI_DTOR           0x08            /* Data Timeout Register */
+#define         AT91_MCI_DTOCYC         (0xf << 0)      /* Data Timeout Cycle Number */
+#define         AT91_MCI_DTOMUL         (7   << 4)      /* Data Timeout Multiplier */
+#define         AT91_MCI_DTOMUL_1               (0 <<  4)
+#define         AT91_MCI_DTOMUL_16              (1 <<  4)
+#define         AT91_MCI_DTOMUL_128             (2 <<  4)
+#define         AT91_MCI_DTOMUL_256             (3 <<  4)
+#define         AT91_MCI_DTOMUL_1K              (4 <<  4)
+#define         AT91_MCI_DTOMUL_4K              (5 <<  4)
+#define         AT91_MCI_DTOMUL_64K             (6 <<  4)
+#define         AT91_MCI_DTOMUL_1M              (7 <<  4)
+
+#define AT91_MCI_SDCR           0x0c            /* SD Card Register */
+#define         AT91_MCI_SDCSEL         (0xf << 0)      /* SD Card Selector */
+#define         AT91_MCI_SDCBUS         (1   << 7)      /* 1-bit or 4-bit bus */
+
+#define AT91_MCI_ARGR           0x10            /* Argument Register */
+
+#define AT91_MCI_CMDR           0x14            /* Command Register */
+#define         AT91_MCI_CMDNB          (0x3f << 0)     /* Command Number */
+#define         AT91_MCI_RSPTYP         (3    << 6)     /* Response Type */
+#define                 AT91_MCI_RSPTYP_NONE    (0 <<  6)
+#define                 AT91_MCI_RSPTYP_48      (1 <<  6)
+#define                 AT91_MCI_RSPTYP_136     (2 <<  6)
+#define         AT91_MCI_SPCMD          (7    << 8)     /* Special Command */
+#define                 AT91_MCI_SPCMD_NONE     (0 <<  8)
+#define                 AT91_MCI_SPCMD_INIT     (1 <<  8)
+#define                 AT91_MCI_SPCMD_SYNC     (2 <<  8)
+#define                 AT91_MCI_SPCMD_ICMD     (4 <<  8)
+#define                 AT91_MCI_SPCMD_IRESP    (5 <<  8)
+#define         AT91_MCI_OPDCMD         (1 << 11)       /* Open Drain Command */
+#define         AT91_MCI_MAXLAT         (1 << 12)       /* Max Latency for Command to Response */
+#define         AT91_MCI_TRCMD          (3 << 16)       /* Transfer Command */
+#define                 AT91_MCI_TRCMD_NONE     (0 << 16)
+#define                 AT91_MCI_TRCMD_START    (1 << 16)
+#define                 AT91_MCI_TRCMD_STOP     (2 << 16)
+#define         AT91_MCI_TRDIR          (1 << 18)       /* Transfer Direction */
+#define         AT91_MCI_TRTYP          (3 << 19)       /* Transfer Type */
+#define                 AT91_MCI_TRTYP_BLOCK    (0 << 19)
+#define                 AT91_MCI_TRTYP_MULTIPLE (1 << 19)
+#define                 AT91_MCI_TRTYP_STREAM   (2 << 19)
+
+#define AT91_MCI_RSPR(n)        (0x20 + ((n) * 4))      /* Response Registers 0-3 */
+#define AT91_MCR_RDR            0x30            /* Receive Data Register */
+#define AT91_MCR_TDR            0x34            /* Transmit Data Register */
+
+#define AT91_MCI_SR             0x40            /* Status Register */
+#define         AT91_MCI_CMDRDY         (1 <<  0)       /* Command Ready */
+#define         AT91_MCI_RXRDY          (1 <<  1)       /* Receiver Ready */
+#define         AT91_MCI_TXRDY          (1 <<  2)       /* Transmit Ready */
+#define         AT91_MCI_BLKE           (1 <<  3)       /* Data Block Ended */
+#define         AT91_MCI_DTIP           (1 <<  4)       /* Data Transfer in Progress */
+#define         AT91_MCI_NOTBUSY        (1 <<  5)       /* Data Not Busy */
+#define         AT91_MCI_ENDRX          (1 <<  6)       /* End of RX Buffer */
+#define         AT91_MCI_ENDTX          (1 <<  7)       /* End fo TX Buffer */
+#define         AT91_MCI_RXBUFF         (1 << 14)       /* RX Buffer Full */
+#define         AT91_MCI_TXBUFE         (1 << 15)       /* TX Buffer Empty */
+#define         AT91_MCI_RINDE          (1 << 16)       /* Response Index Error */
+#define         AT91_MCI_RDIRE          (1 << 17)       /* Response Direction Error */
+#define         AT91_MCI_RCRCE          (1 << 18)       /* Response CRC Error */
+#define         AT91_MCI_RENDE          (1 << 19)       /* Response End Bit Error */
+#define         AT91_MCI_RTOE           (1 << 20)       /* Reponse Time-out Error */
+#define         AT91_MCI_DCRCE          (1 << 21)       /* Data CRC Error */
+#define         AT91_MCI_DTOE           (1 << 22)       /* Data Time-out Error */
+#define         AT91_MCI_OVRE           (1 << 30)       /* Overrun */
+#define         AT91_MCI_UNRE           (1 << 31)       /* Underrun */
+
+#define AT91_MCI_IER            0x44            /* Interrupt Enable Register */
+#define AT91_MCI_IDR            0x48            /* Interrupt Disable Register */
+#define AT91_MCI_IMR            0x4c            /* Interrupt Mask Register */
+
+#endif