mmc: SDIO driver for Marvell SoCs

This supports MMC/SD/SDIO currently found on the Kirkwood 88F6281 and
88F6192 SoC controllers.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 190 insertions, 0 deletions

diff --git a/drivers/mmc/host/mvsdio.h b/drivers/mmc/host/mvsdio.h
new file mode 100644
index 000000000000..7d9727b9f5aa
--- /dev/null
+++ b/drivers/mmc/host/mvsdio.h
@@ -0,0 +1,190 @@
+/*
+ *  Copyright (C) 2008 Marvell Semiconductors, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MVSDIO_H
+#define __MVSDIO_H
+
+/*
+ * Clock rates
+ */
+
+#define MVSD_CLOCKRATE_MAX                      50000000
+#define MVSD_BASE_DIV_MAX                       0x7ff
+
+
+/*
+ * Register offsets
+ */
+
+#define MVSD_SYS_ADDR_LOW                       0x000
+#define MVSD_SYS_ADDR_HI                        0x004
+#define MVSD_BLK_SIZE                           0x008
+#define MVSD_BLK_COUNT                          0x00c
+#define MVSD_ARG_LOW                            0x010
+#define MVSD_ARG_HI                             0x014
+#define MVSD_XFER_MODE                          0x018
+#define MVSD_CMD                                0x01c
+#define MVSD_RSP(i)                             (0x020 + ((i)<<2))
+#define MVSD_RSP0                               0x020
+#define MVSD_RSP1                               0x024
+#define MVSD_RSP2                               0x028
+#define MVSD_RSP3                               0x02c
+#define MVSD_RSP4                               0x030
+#define MVSD_RSP5                               0x034
+#define MVSD_RSP6                               0x038
+#define MVSD_RSP7                               0x03c
+#define MVSD_FIFO                               0x040
+#define MVSD_RSP_CRC7                           0x044
+#define MVSD_HW_STATE                           0x048
+#define MVSD_HOST_CTRL                          0x050
+#define MVSD_BLK_GAP_CTRL                       0x054
+#define MVSD_CLK_CTRL                           0x058
+#define MVSD_SW_RESET                           0x05c
+#define MVSD_NOR_INTR_STATUS                    0x060
+#define MVSD_ERR_INTR_STATUS                    0x064
+#define MVSD_NOR_STATUS_EN                      0x068
+#define MVSD_ERR_STATUS_EN                      0x06c
+#define MVSD_NOR_INTR_EN                        0x070
+#define MVSD_ERR_INTR_EN                        0x074
+#define MVSD_AUTOCMD12_ERR_STATUS               0x078
+#define MVSD_CURR_BYTE_LEFT                     0x07c
+#define MVSD_CURR_BLK_LEFT                      0x080
+#define MVSD_AUTOCMD12_ARG_LOW                  0x084
+#define MVSD_AUTOCMD12_ARG_HI                   0x088
+#define MVSD_AUTOCMD12_CMD                      0x08c
+#define MVSD_AUTO_RSP(i)                        (0x090 + ((i)<<2))
+#define MVSD_AUTO_RSP0                          0x090
+#define MVSD_AUTO_RSP1                          0x094
+#define MVSD_AUTO_RSP2                          0x098
+#define MVSD_CLK_DIV                            0x128
+
+#define MVSD_WINDOW_CTRL(i)                     (0x108 + ((i) << 3))
+#define MVSD_WINDOW_BASE(i)                     (0x10c + ((i) << 3))
+
+
+/*
+ * MVSD_CMD
+ */
+
+#define MVSD_CMD_RSP_NONE                       (0 << 0)
+#define MVSD_CMD_RSP_136                        (1 << 0)
+#define MVSD_CMD_RSP_48                         (2 << 0)
+#define MVSD_CMD_RSP_48BUSY                     (3 << 0)
+
+#define MVSD_CMD_CHECK_DATACRC16                (1 << 2)
+#define MVSD_CMD_CHECK_CMDCRC                   (1 << 3)
+#define MVSD_CMD_INDX_CHECK                     (1 << 4)
+#define MVSD_CMD_DATA_PRESENT                   (1 << 5)
+#define MVSD_UNEXPECTED_RESP                    (1 << 7)
+#define MVSD_CMD_INDEX(x)                       ((x) << 8)
+
+
+/*
+ * MVSD_AUTOCMD12_CMD
+ */
+
+#define MVSD_AUTOCMD12_BUSY                     (1 << 0)
+#define MVSD_AUTOCMD12_INDX_CHECK               (1 << 1)
+#define MVSD_AUTOCMD12_INDEX(x)                 ((x) << 8)
+
+/*
+ * MVSD_XFER_MODE
+ */
+
+#define MVSD_XFER_MODE_WR_DATA_START            (1 << 0)
+#define MVSD_XFER_MODE_HW_WR_DATA_EN            (1 << 1)
+#define MVSD_XFER_MODE_AUTO_CMD12               (1 << 2)
+#define MVSD_XFER_MODE_INT_CHK_EN               (1 << 3)
+#define MVSD_XFER_MODE_TO_HOST                  (1 << 4)
+#define MVSD_XFER_MODE_STOP_CLK                 (1 << 5)
+#define MVSD_XFER_MODE_PIO                      (1 << 6)
+
+
+/*
+ * MVSD_HOST_CTRL
+ */
+
+#define MVSD_HOST_CTRL_PUSH_PULL_EN             (1 << 0)
+
+#define MVSD_HOST_CTRL_CARD_TYPE_MEM_ONLY       (0 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_ONLY        (1 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_MEM_COMBO   (2 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_MMC         (3 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_MASK           (3 << 1)
+
+#define MVSD_HOST_CTRL_BIG_ENDIAN               (1 << 3)
+#define MVSD_HOST_CTRL_LSB_FIRST                (1 << 4)
+#define MVSD_HOST_CTRL_DATA_WIDTH_4_BITS        (1 << 9)
+#define MVSD_HOST_CTRL_HI_SPEED_EN              (1 << 10)
+
+#define MVSD_HOST_CTRL_TMOUT_MAX                0xf
+#define MVSD_HOST_CTRL_TMOUT_MASK               (0xf << 11)
+#define MVSD_HOST_CTRL_TMOUT(x)                 ((x) << 11)
+#define MVSD_HOST_CTRL_TMOUT_EN                 (1 << 15)
+
+
+/*
+ * MVSD_SW_RESET
+ */
+
+#define MVSD_SW_RESET_NOW                       (1 << 8)
+
+
+/*
+ * Normal interrupt status bits
+ */
+
+#define MVSD_NOR_CMD_DONE                       (1 << 0)
+#define MVSD_NOR_XFER_DONE                      (1 << 1)
+#define MVSD_NOR_BLK_GAP_EVT                    (1 << 2)
+#define MVSD_NOR_DMA_DONE                       (1 << 3)
+#define MVSD_NOR_TX_AVAIL                       (1 << 4)
+#define MVSD_NOR_RX_READY                       (1 << 5)
+#define MVSD_NOR_CARD_INT                       (1 << 8)
+#define MVSD_NOR_READ_WAIT_ON                   (1 << 9)
+#define MVSD_NOR_RX_FIFO_8W                     (1 << 10)
+#define MVSD_NOR_TX_FIFO_8W                     (1 << 11)
+#define MVSD_NOR_SUSPEND_ON                     (1 << 12)
+#define MVSD_NOR_AUTOCMD12_DONE                 (1 << 13)
+#define MVSD_NOR_UNEXP_RSP                      (1 << 14)
+#define MVSD_NOR_ERROR                          (1 << 15)
+
+
+/*
+ * Error status bits
+ */
+
+#define MVSD_ERR_CMD_TIMEOUT                    (1 << 0)
+#define MVSD_ERR_CMD_CRC                        (1 << 1)
+#define MVSD_ERR_CMD_ENDBIT                     (1 << 2)
+#define MVSD_ERR_CMD_INDEX                      (1 << 3)
+#define MVSD_ERR_DATA_TIMEOUT                   (1 << 4)
+#define MVSD_ERR_DATA_CRC                       (1 << 5)
+#define MVSD_ERR_DATA_ENDBIT                    (1 << 6)
+#define MVSD_ERR_AUTOCMD12                      (1 << 8)
+#define MVSD_ERR_CMD_STARTBIT                   (1 << 9)
+#define MVSD_ERR_XFER_SIZE                      (1 << 10)
+#define MVSD_ERR_RESP_T_BIT                     (1 << 11)
+#define MVSD_ERR_CRC_ENDBIT                     (1 << 12)
+#define MVSD_ERR_CRC_STARTBIT                   (1 << 13)
+#define MVSD_ERR_CRC_STATUS                     (1 << 14)
+
+
+/*
+ * CMD12 error status bits
+ */
+
+#define MVSD_AUTOCMD12_ERR_NOTEXE               (1 << 0)
+#define MVSD_AUTOCMD12_ERR_TIMEOUT              (1 << 1)
+#define MVSD_AUTOCMD12_ERR_CRC                  (1 << 2)
+#define MVSD_AUTOCMD12_ERR_ENDBIT               (1 << 3)
+#define MVSD_AUTOCMD12_ERR_INDEX                (1 << 4)
+#define MVSD_AUTOCMD12_ERR_RESP_T_BIT           (1 << 5)
+#define MVSD_AUTOCMD12_ERR_RESP_STARTBIT        (1 << 6)
+
+#endif