ARM: DaVinci: forward port MMC driver

This is a forward port of the MMC driver, originally written by TI,
from the MV 2.6.10 kernel.

This currently will not build.  It needs an update from using the
obsoleted 'req' field of struct mmc_data.
Signed-off-by: Kevin Hilman <khilman@mvista.com>

drivers/mmc/Kconfig

@@ -71,6 +71,14 @@ config MMC_OMAP
 
 	  If unsure, say N.
 
+config MMC_DAVINCI
+	tristate "TI DAVINCI Multimedia Card Interface support"
+	depends on MMC
+	help
+	  This selects the TI DAVINCI Multimedia card Interface.
+	  If you have an DAVINCI board with a Multimedia Card slot,
+	  say Y or M here.  If unsure, say N.
+
 config MMC_WBSD
 	tristate "Winbond W83L51xD SD/MMC Card Interface support"
 	depends on MMC && ISA_DMA_API

drivers/mmc/Makefile

@@ -23,6 +23,7 @@ obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
 obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
 obj-$(CONFIG_MMC_OMAP)		+= omap.o
 obj-$(CONFIG_MMC_AT91RM9200)	+= at91_mci.o
+obj-$(CONFIG_MMC_DAVINCI) 	+= davinci_mmc.o
 
 mmc_core-y := mmc.o mmc_queue.o mmc_sysfs.o
 

drivers/mmc/davinci_mmc.h

+/*
+ *  linux/drivers/mmc/davinci.h
+ *
+ *  BRIEF MODULE DESCRIPTION
+ *      DAVINCI MMC register and other definitions
+ *
+ *  Copyright (C) 2006 Texas Instruments.
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+ Modifications:
+ ver. 1.0: Oct 2005, Purushotam Kumar   Initial version
+ ver  1.2: Jan  2006, Purushotam Kumar   Added hot card remove insert support
+
+ *
+ */
+
+#ifndef DAVINCI_MMC_H_
+#define DAVINCI_MMC_H_
+
+/**************************************************************************\
+* Register Overlay Structure
+\**************************************************************************/
+
+typedef struct {
+	unsigned short mmc_ctl;
+	unsigned char rsvd0[2];
+	unsigned short mmc_clk;
+	unsigned char rsvd1[2];
+	unsigned short mmc_st0;
+	unsigned char rsvd2[2];
+	unsigned short mmc_st1;
+	unsigned char rsvd3[2];
+	unsigned short mmc_im;
+	unsigned char rsvd4[2];
+	unsigned short mmc_tor;
+	unsigned char rsvd5[2];
+	unsigned short mmc_tod;
+	unsigned char rsvd6[2];
+	unsigned short mmc_blen;
+	unsigned char rsvd7[2];
+	unsigned short mmc_nblk;
+	unsigned char rsvd8[2];
+	unsigned short mmc_nblc;
+	unsigned char rsvd9[2];
+	unsigned int mmc_drr;
+	unsigned int mmc_dxr;
+	unsigned int mmc_cmd;
+	unsigned int mmc_arghl;
+	unsigned int mmc_rsp01;
+	unsigned int mmc_rsp23;
+	unsigned int mmc_rsp45;
+	unsigned int mmc_rsp67;
+	unsigned short mmc_drsp;
+	unsigned char rsvd10[2];
+	unsigned short mmc_etok;
+	unsigned char rsvd11[2];
+	unsigned short mmc_cidx;
+	unsigned char rsvd12[2];
+	unsigned short mmc_ckc;
+	unsigned char rsvd13[2];
+	unsigned short mmc_torc;
+	unsigned char rsvd14[2];
+	unsigned short mmc_todc;
+	unsigned char rsvd15[2];
+	unsigned short mmc_blnc;
+	unsigned char rsvd16[2];
+	unsigned short sdio_ctl;
+	unsigned char rsvd17[2];
+	unsigned short sdio_st0;
+	unsigned char rsvd18[2];
+	unsigned short sdio_en;
+	unsigned char rsvd19[2];
+	unsigned short sdio_st;
+	unsigned char rsvd20[2];
+	unsigned short mmc_fifo_ctl;
+} mmcsd_regs_base;
+
+/*
+ * Command types
+ */
+#define DAVINCI_MMC_CMDTYPE_BC	0
+#define DAVINCI_MMC_CMDTYPE_BCR	1
+#define DAVINCI_MMC_CMDTYPE_AC	2
+#define DAVINCI_MMC_CMDTYPE_ADTC	3
+#define EDMA_MAX_LOGICAL_CHA_ALLOWED 1
+
+typedef struct {
+	unsigned char cnt_chanel;
+	unsigned int chanel_num[EDMA_MAX_LOGICAL_CHA_ALLOWED];
+} edma_ch_mmcsd;
+
+struct mmc_davinci_host {
+
+	int initialized;
+	int suspended;
+	struct mmc_request *req;
+	struct mmc_command *cmd;
+	struct mmc_data *data;
+	struct mmc_host *mmc;
+	struct device *dev;
+	unsigned char id;
+	struct clk *clk;
+	u32 base;
+	int irq;
+	unsigned char bus_mode;
+
+#define DAVINCI_MMC_DATADIR_NONE	0
+#define DAVINCI_MMC_DATADIR_READ	1
+#define DAVINCI_MMC_DATADIR_WRITE	2
+	unsigned char data_dir;
+	u32 *buffer;
+	u32 bytes_left;
+	int power_pin;
+
+	int use_dma;
+	struct completion dma_completion;
+
+	struct timer_list timer;
+	unsigned int is_core_command;
+	unsigned int cmd_code;
+	unsigned int old_card_state;
+
+	unsigned char sd_support;
+
+	edma_ch_mmcsd edma_ch_details;
+
+};
+typedef struct {
+	unsigned short rw_threshold;
+	unsigned short use_dma;
+} mmcsd_config_def;
+
+typedef enum {
+	MMCSD_EVENT_EOFCMD = (1 << 2),
+	MMCSD_EVENT_READ = (1 << 10),
+	MMCSD_EVENT_WRITE = (1 << 9),
+	MMCSD_EVENT_ERROR_CMDCRC = (1 << 7),
+	MMCSD_EVENT_ERROR_DATACRC = ((1 << 6) | (1 << 5)),
+	MMCSD_EVENT_ERROR_CMDTIMEOUT = (1 << 4),
+	MMCSD_EVENT_ERROR_DATATIMEOUT = (1 << 3),
+	MMCSD_EVENT_CARD_EXITBUSY = (1 << 1),
+	MMCSD_EVENT_BLOCK_XFERRED = (1 << 0)
+} mmcsdevent;
+
+#define MMCSD_EVENT_TIMEOUT_ERROR \
+ (MMCSD_EVENT_ERROR_DATATIMEOUT | MMCSD_EVENT_ERROR_CMDTIMEOUT )
+#define MMCSD_EVENT_CRC_ERROR \
+ (MMCSD_EVENT_ERROR_DATACRC | MMCSD_EVENT_ERROR_CMDCRC)
+#define MMCSD_EVENT_ERROR \
+ (MMCSD_EVENT_TIMEOUT_ERROR | MMCSD_EVENT_CRC_ERROR)
+
+#endif /* DAVINCI_MMC_H_ */