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Commit 9d2bd738 authored by San Mehat's avatar San Mehat Committed by Linus Torvalds
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mmc: msm_sdccc: driver for HTC Dream 



MMC Driver for HTC Dream.  I picked the code up from Google git trees,
removed stuff not strictly necessary, and did a few cleanups.  It still
works :-).

Signed-off-by: default avatarPavel Machek <pavel@ucw.cz>
Cc: Brian Swetland <swetland@google.com>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Joe Perches <joe@perches.com>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Philip Langdale <philipl@overt.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ccdfe3a6

drivers/mmc/host/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -199,6 +199,13 @@ config MMC_IMX 


	  If unsure, say N.



config MMC_MSM7X00A

	tristate "Qualcomm MSM 7X00A SDCC Controller Support"

	depends on MMC && ARCH_MSM

	help

	  This provides support for the SD/MMC cell found in the

          MSM 7X00A controllers from Qualcomm.



config MMC_MXC

	tristate "Freescale i.MX2/3 Multimedia Card Interface support"

	depends on ARCH_MXC

drivers/mmc/host/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o 
obj-$(CONFIG_MMC_AT91)		+= at91_mci.o

obj-$(CONFIG_MMC_ATMELMCI)	+= atmel-mci.o

obj-$(CONFIG_MMC_TIFM_SD)	+= tifm_sd.o

obj-$(CONFIG_MMC_MSM7X00A)	+= msm_sdcc.o

obj-$(CONFIG_MMC_MVSDIO)	+= mvsdio.o

obj-$(CONFIG_MMC_SPI)		+= mmc_spi.o

ifeq ($(CONFIG_OF),y)

drivers/mmc/host/msm_sdcc.c

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+1301 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/mmc/host/msm_sdcc.h

0 → 100644
+238 −0
Original line number Diff line number Diff line 
/*

 *  linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller

 *

 *  Copyright (C) 2008 Google, 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.

 *

 * - Based on mmci.h

 */



#ifndef _MSM_SDCC_H

#define _MSM_SDCC_H



#define MSMSDCC_CRCI_SDC1	6

#define MSMSDCC_CRCI_SDC2	7

#define MSMSDCC_CRCI_SDC3	12

#define MSMSDCC_CRCI_SDC4	13



#define MMCIPOWER		0x000

#define MCI_PWR_OFF		0x00

#define MCI_PWR_UP		0x02

#define MCI_PWR_ON		0x03

#define MCI_OD			(1 << 6)



#define MMCICLOCK		0x004

#define MCI_CLK_ENABLE		(1 << 8)

#define MCI_CLK_PWRSAVE		(1 << 9)

#define MCI_CLK_WIDEBUS		(1 << 10)

#define MCI_CLK_FLOWENA		(1 << 12)

#define MCI_CLK_INVERTOUT	(1 << 13)

#define MCI_CLK_SELECTIN	(1 << 14)



#define MMCIARGUMENT		0x008

#define MMCICOMMAND		0x00c

#define MCI_CPSM_RESPONSE	(1 << 6)

#define MCI_CPSM_LONGRSP	(1 << 7)

#define MCI_CPSM_INTERRUPT	(1 << 8)

#define MCI_CPSM_PENDING	(1 << 9)

#define MCI_CPSM_ENABLE		(1 << 10)

#define MCI_CPSM_PROGENA	(1 << 11)

#define MCI_CSPM_DATCMD		(1 << 12)

#define MCI_CSPM_MCIABORT	(1 << 13)

#define MCI_CSPM_CCSENABLE	(1 << 14)

#define MCI_CSPM_CCSDISABLE	(1 << 15)





#define MMCIRESPCMD		0x010

#define MMCIRESPONSE0		0x014

#define MMCIRESPONSE1		0x018

#define MMCIRESPONSE2		0x01c

#define MMCIRESPONSE3		0x020

#define MMCIDATATIMER		0x024

#define MMCIDATALENGTH		0x028



#define MMCIDATACTRL		0x02c

#define MCI_DPSM_ENABLE		(1 << 0)

#define MCI_DPSM_DIRECTION	(1 << 1)

#define MCI_DPSM_MODE		(1 << 2)

#define MCI_DPSM_DMAENABLE	(1 << 3)



#define MMCIDATACNT		0x030

#define MMCISTATUS		0x034

#define MCI_CMDCRCFAIL		(1 << 0)

#define MCI_DATACRCFAIL		(1 << 1)

#define MCI_CMDTIMEOUT		(1 << 2)

#define MCI_DATATIMEOUT		(1 << 3)

#define MCI_TXUNDERRUN		(1 << 4)

#define MCI_RXOVERRUN		(1 << 5)

#define MCI_CMDRESPEND		(1 << 6)

#define MCI_CMDSENT		(1 << 7)

#define MCI_DATAEND		(1 << 8)

#define MCI_DATABLOCKEND	(1 << 10)

#define MCI_CMDACTIVE		(1 << 11)

#define MCI_TXACTIVE		(1 << 12)

#define MCI_RXACTIVE		(1 << 13)

#define MCI_TXFIFOHALFEMPTY	(1 << 14)

#define MCI_RXFIFOHALFFULL	(1 << 15)

#define MCI_TXFIFOFULL		(1 << 16)

#define MCI_RXFIFOFULL		(1 << 17)

#define MCI_TXFIFOEMPTY		(1 << 18)

#define MCI_RXFIFOEMPTY		(1 << 19)

#define MCI_TXDATAAVLBL		(1 << 20)

#define MCI_RXDATAAVLBL		(1 << 21)

#define MCI_SDIOINTR		(1 << 22)

#define MCI_PROGDONE		(1 << 23)

#define MCI_ATACMDCOMPL		(1 << 24)

#define MCI_SDIOINTOPER		(1 << 25)

#define MCI_CCSTIMEOUT		(1 << 26)



#define MMCICLEAR		0x038

#define MCI_CMDCRCFAILCLR	(1 << 0)

#define MCI_DATACRCFAILCLR	(1 << 1)

#define MCI_CMDTIMEOUTCLR	(1 << 2)

#define MCI_DATATIMEOUTCLR	(1 << 3)

#define MCI_TXUNDERRUNCLR	(1 << 4)

#define MCI_RXOVERRUNCLR	(1 << 5)

#define MCI_CMDRESPENDCLR	(1 << 6)

#define MCI_CMDSENTCLR		(1 << 7)

#define MCI_DATAENDCLR		(1 << 8)

#define MCI_DATABLOCKENDCLR	(1 << 10)



#define MMCIMASK0		0x03c

#define MCI_CMDCRCFAILMASK	(1 << 0)

#define MCI_DATACRCFAILMASK	(1 << 1)

#define MCI_CMDTIMEOUTMASK	(1 << 2)

#define MCI_DATATIMEOUTMASK	(1 << 3)

#define MCI_TXUNDERRUNMASK	(1 << 4)

#define MCI_RXOVERRUNMASK	(1 << 5)

#define MCI_CMDRESPENDMASK	(1 << 6)

#define MCI_CMDSENTMASK		(1 << 7)

#define MCI_DATAENDMASK		(1 << 8)

#define MCI_DATABLOCKENDMASK	(1 << 10)

#define MCI_CMDACTIVEMASK	(1 << 11)

#define MCI_TXACTIVEMASK	(1 << 12)

#define MCI_RXACTIVEMASK	(1 << 13)

#define MCI_TXFIFOHALFEMPTYMASK	(1 << 14)

#define MCI_RXFIFOHALFFULLMASK	(1 << 15)

#define MCI_TXFIFOFULLMASK	(1 << 16)

#define MCI_RXFIFOFULLMASK	(1 << 17)

#define MCI_TXFIFOEMPTYMASK	(1 << 18)

#define MCI_RXFIFOEMPTYMASK	(1 << 19)

#define MCI_TXDATAAVLBLMASK	(1 << 20)

#define MCI_RXDATAAVLBLMASK	(1 << 21)

#define MCI_SDIOINTMASK		(1 << 22)

#define MCI_PROGDONEMASK	(1 << 23)

#define MCI_ATACMDCOMPLMASK	(1 << 24)

#define MCI_SDIOINTOPERMASK	(1 << 25)

#define MCI_CCSTIMEOUTMASK	(1 << 26)



#define MMCIMASK1		0x040

#define MMCIFIFOCNT		0x044

#define MCICCSTIMER		0x058



#define MMCIFIFO		0x080 /* to 0x0bc */



#define MCI_IRQENABLE	\

	(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|	\

	MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|	\

	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK)



/*

 * The size of the FIFO in bytes.

 */

#define MCI_FIFOSIZE	(16*4)



#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)



#define NR_SG		32



struct clk;



struct msmsdcc_nc_dmadata {

	dmov_box	cmd[NR_SG];

	uint32_t	cmdptr;

};



struct msmsdcc_dma_data {

	struct msmsdcc_nc_dmadata	*nc;

	dma_addr_t			nc_busaddr;

	dma_addr_t			cmd_busaddr;

	dma_addr_t			cmdptr_busaddr;



	struct msm_dmov_cmd		hdr;

	enum dma_data_direction		dir;



	struct scatterlist		*sg;

	int				num_ents;



	int				channel;

	struct msmsdcc_host		*host;

	int				busy; /* Set if DM is busy */

};



struct msmsdcc_pio_data {

	struct scatterlist	*sg;

	unsigned int		sg_len;

	unsigned int		sg_off;

};



struct msmsdcc_curr_req {

	struct mmc_request	*mrq;

	struct mmc_command	*cmd;

	struct mmc_data		*data;

	unsigned int		xfer_size;	/* Total data size */

	unsigned int		xfer_remain;	/* Bytes remaining to send */

	unsigned int		data_xfered;	/* Bytes acked by BLKEND irq */

	int			got_dataend;

	int			got_datablkend;

	int			user_pages;

};



struct msmsdcc_stats {

	unsigned int reqs;

	unsigned int cmds;

	unsigned int cmdpoll_hits;

	unsigned int cmdpoll_misses;

};



struct msmsdcc_host {

	struct resource		*cmd_irqres;

	struct resource		*pio_irqres;

	struct resource		*memres;

	struct resource		*dmares;

	void __iomem		*base;

	int			pdev_id;

	unsigned int		stat_irq;



	struct msmsdcc_curr_req	curr;



	struct mmc_host		*mmc;

	struct clk		*clk;		/* main MMC bus clock */

	struct clk		*pclk;		/* SDCC peripheral bus clock */

	unsigned int		clks_on;	/* set if clocks are enabled */

	struct timer_list	command_timer;



	unsigned int		eject;		/* eject state */



	spinlock_t		lock;



	unsigned int		clk_rate;	/* Current clock rate */

	unsigned int		pclk_rate;



	u32			pwr;

	u32			saved_irq0mask;	/* MMCIMASK0 reg value */

	struct mmc_platform_data *plat;



	struct timer_list	timer;

	unsigned int		oldstat;



	struct msmsdcc_dma_data	dma;

	struct msmsdcc_pio_data	pio;

	int			cmdpoll;

	struct msmsdcc_stats	stats;

};



#endif