Commit ba264b34 authored by Pete Popov's avatar Pete Popov Committed by Ralf Baechle
Browse files

Au1[12]00 mmc driver. Only tested on the Au1200 at this point though 


it should work on the Au1100 as well. Updated defconfig to include driver.

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent bab056aa

arch/mips/au1000/common/platform.c

+34 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 * License version 2.  This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

 */

#include <linux/config.h>

#include <linux/device.h>

#include <linux/kernel.h>

#include <linux/init.h>
@@ -114,6 +115,24 @@ static struct resource au1xxx_usb_gdt_resources[] = { 
	},

};



static struct resource au1xxx_mmc_resources[] = {

	[0] = {

		.start          = SD0_PHYS_ADDR,

		.end            = SD0_PHYS_ADDR + 0x40,

		.flags          = IORESOURCE_MEM,

	},

	[1] = {

		.start		= SD1_PHYS_ADDR,

		.end 		= SD1_PHYS_ADDR + 0x40,

		.flags		= IORESOURCE_MEM,

	},

	[2] = {

		.start          = AU1200_SD_INT,

		.end            = AU1200_SD_INT,

		.flags          = IORESOURCE_IRQ,

	}

};



static u64 udc_dmamask = ~(u32)0;



static struct platform_device au1xxx_usb_gdt_device = {
@@ -207,6 +226,20 @@ static struct platform_device au1200_ide0_device = { 
	.resource	= au1200_ide0_resources,

};



static u64 au1xxx_mmc_dmamask =  ~(u32)0;



static struct platform_device au1xxx_mmc_device = {

	.name = "au1xxx-mmc",

	.id = 0,

	.dev = {

		.dma_mask               = &au1xxx_mmc_dmamask,

		.coherent_dma_mask      = 0xffffffff,

	},

	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),

	.resource       = au1xxx_mmc_resources,

};

#endif /* #ifdef CONFIG_SOC_AU1200 */



static struct platform_device au1x00_pcmcia_device = {

	.name 		= "au1x00-pcmcia",

	.id 		= 0,
@@ -226,6 +259,7 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = { 
	&au1xxx_usb_otg_device,

	&au1200_lcd_device,

	&au1200_ide0_device,

	&au1xxx_mmc_device,

#endif

};

drivers/mmc/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -60,4 +60,13 @@ config MMC_WBSD 


	  If unsure, say N.



config MMC_AU1X

	tristate "Alchemy AU1XX0 MMC Card Interface support"

	depends on SOC_AU1X00 && MMC

	help

	  This selects the AMD Alchemy(R) Multimedia card interface.

	  iIf you have a Alchemy platform with a MMC slot, say Y or M here.



	  If unsure, say N.



endmenu

drivers/mmc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -18,5 +18,6 @@ obj-$(CONFIG_MMC_BLOCK) += mmc_block.o 
obj-$(CONFIG_MMC_ARMMMCI)	+= mmci.o

obj-$(CONFIG_MMC_PXA)		+= pxamci.o

obj-$(CONFIG_MMC_WBSD)		+= wbsd.o

obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o



mmc_core-y := mmc.o mmc_queue.o mmc_sysfs.o

drivers/mmc/au1xmmc.c

0 → 100644
+1026 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/mmc/au1xmmc.h

0 → 100644
+96 −0
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#ifndef _AU1XMMC_H_

#define _AU1XMMC_H_



/* Hardware definitions */



#define AU1XMMC_DESCRIPTOR_COUNT 1

#define AU1XMMC_DESCRIPTOR_SIZE  2048



#define AU1XMMC_OCR ( MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30  | \

		      MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33  | \

		      MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)



/* Easy access macros */



#define HOST_STATUS(h)	((h)->iobase + SD_STATUS)

#define HOST_CONFIG(h)	((h)->iobase + SD_CONFIG)

#define HOST_ENABLE(h)	((h)->iobase + SD_ENABLE)

#define HOST_TXPORT(h)	((h)->iobase + SD_TXPORT)

#define HOST_RXPORT(h)	((h)->iobase + SD_RXPORT)

#define HOST_CMDARG(h)	((h)->iobase + SD_CMDARG)

#define HOST_BLKSIZE(h)	((h)->iobase + SD_BLKSIZE)

#define HOST_CMD(h)	((h)->iobase + SD_CMD)

#define HOST_CONFIG2(h)	((h)->iobase + SD_CONFIG2)

#define HOST_TIMEOUT(h)	((h)->iobase + SD_TIMEOUT)

#define HOST_DEBUG(h)	((h)->iobase + SD_DEBUG)



#define DMA_CHANNEL(h) \

	( ((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)



/* This gives us a hard value for the stop command that we can write directly

 * to the command register

 */



#define STOP_CMD (SD_CMD_RT_1B|SD_CMD_CT_7|(0xC << SD_CMD_CI_SHIFT)|SD_CMD_GO)



/* This is the set of interrupts that we configure by default */



#if 0

#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_DD | \

		SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)

#endif



#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | \

		SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)

/* The poll event (looking for insert/remove events runs twice a second */

#define AU1XMMC_DETECT_TIMEOUT (HZ/2)



struct au1xmmc_host {

  struct mmc_host *mmc;

  struct mmc_request *mrq;



  u32 id;



  u32 flags;

  u32 iobase;

  u32 clock;

  u32 bus_width;

  u32 power_mode;



  int status;



   struct {

	   int len;

	   int dir;

  } dma;



   struct {

	   int index;

	   int offset;

	   int len;

  } pio;



  u32 tx_chan;

  u32 rx_chan;



  struct timer_list timer;

  struct tasklet_struct finish_task;

  struct tasklet_struct data_task;



  spinlock_t lock;

};



/* Status flags used by the host structure */



#define HOST_F_XMIT   0x0001

#define HOST_F_RECV   0x0002

#define HOST_F_DMA    0x0010

#define HOST_F_ACTIVE 0x0100

#define HOST_F_STOP   0x1000



#define HOST_S_IDLE   0x0001

#define HOST_S_CMD    0x0002

#define HOST_S_DATA   0x0003

#define HOST_S_STOP   0x0004



#endif