forked from Minki/linux
42051e8a7b
On sh-mobile platforms the SDHI driver was using the tmio_mmc SD/SDIO MFD cell driver. Now that the tmio_mmc driver has been split into a core and a separate MFD glue, we can support SDHI natively without the need to emulate an MFD controller. This also allows to support systems with an on-SoC SDHI controller and a separate MFD with a TMIO core. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Chris Ball <cjb@laptop.org>
146 lines
4.4 KiB
C
146 lines
4.4 KiB
C
/*
|
|
* linux/drivers/mmc/host/tmio_mmc.h
|
|
*
|
|
* Copyright (C) 2007 Ian Molton
|
|
* Copyright (C) 2004 Ian Molton
|
|
*
|
|
* 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.
|
|
*
|
|
* Driver for the MMC / SD / SDIO cell found in:
|
|
*
|
|
* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
|
|
*/
|
|
|
|
#ifndef TMIO_MMC_H
|
|
#define TMIO_MMC_H
|
|
|
|
#include <linux/highmem.h>
|
|
#include <linux/pagemap.h>
|
|
|
|
/* Definitions for values the CTRL_STATUS register can take. */
|
|
#define TMIO_STAT_CMDRESPEND 0x00000001
|
|
#define TMIO_STAT_DATAEND 0x00000004
|
|
#define TMIO_STAT_CARD_REMOVE 0x00000008
|
|
#define TMIO_STAT_CARD_INSERT 0x00000010
|
|
#define TMIO_STAT_SIGSTATE 0x00000020
|
|
#define TMIO_STAT_WRPROTECT 0x00000080
|
|
#define TMIO_STAT_CARD_REMOVE_A 0x00000100
|
|
#define TMIO_STAT_CARD_INSERT_A 0x00000200
|
|
#define TMIO_STAT_SIGSTATE_A 0x00000400
|
|
#define TMIO_STAT_CMD_IDX_ERR 0x00010000
|
|
#define TMIO_STAT_CRCFAIL 0x00020000
|
|
#define TMIO_STAT_STOPBIT_ERR 0x00040000
|
|
#define TMIO_STAT_DATATIMEOUT 0x00080000
|
|
#define TMIO_STAT_RXOVERFLOW 0x00100000
|
|
#define TMIO_STAT_TXUNDERRUN 0x00200000
|
|
#define TMIO_STAT_CMDTIMEOUT 0x00400000
|
|
#define TMIO_STAT_RXRDY 0x01000000
|
|
#define TMIO_STAT_TXRQ 0x02000000
|
|
#define TMIO_STAT_ILL_FUNC 0x20000000
|
|
#define TMIO_STAT_CMD_BUSY 0x40000000
|
|
#define TMIO_STAT_ILL_ACCESS 0x80000000
|
|
|
|
/* Definitions for values the CTRL_SDIO_STATUS register can take. */
|
|
#define TMIO_SDIO_STAT_IOIRQ 0x0001
|
|
#define TMIO_SDIO_STAT_EXPUB52 0x4000
|
|
#define TMIO_SDIO_STAT_EXWT 0x8000
|
|
#define TMIO_SDIO_MASK_ALL 0xc007
|
|
|
|
/* Define some IRQ masks */
|
|
/* This is the mask used at reset by the chip */
|
|
#define TMIO_MASK_ALL 0x837f031d
|
|
#define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND)
|
|
#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)
|
|
#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \
|
|
TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
|
|
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
|
|
|
|
struct tmio_mmc_data;
|
|
|
|
struct tmio_mmc_host {
|
|
void __iomem *ctl;
|
|
unsigned long bus_shift;
|
|
struct mmc_command *cmd;
|
|
struct mmc_request *mrq;
|
|
struct mmc_data *data;
|
|
struct mmc_host *mmc;
|
|
int irq;
|
|
unsigned int sdio_irq_enabled;
|
|
|
|
/* Callbacks for clock / power control */
|
|
void (*set_pwr)(struct platform_device *host, int state);
|
|
void (*set_clk_div)(struct platform_device *host, int state);
|
|
|
|
/* pio related stuff */
|
|
struct scatterlist *sg_ptr;
|
|
struct scatterlist *sg_orig;
|
|
unsigned int sg_len;
|
|
unsigned int sg_off;
|
|
|
|
struct platform_device *pdev;
|
|
struct tmio_mmc_data *pdata;
|
|
|
|
/* DMA support */
|
|
bool force_pio;
|
|
struct dma_chan *chan_rx;
|
|
struct dma_chan *chan_tx;
|
|
struct tasklet_struct dma_complete;
|
|
struct tasklet_struct dma_issue;
|
|
struct scatterlist bounce_sg;
|
|
u8 *bounce_buf;
|
|
|
|
/* Track lost interrupts */
|
|
struct delayed_work delayed_reset_work;
|
|
spinlock_t lock;
|
|
unsigned long last_req_ts;
|
|
};
|
|
|
|
int tmio_mmc_host_probe(struct tmio_mmc_host **host,
|
|
struct platform_device *pdev,
|
|
struct tmio_mmc_data *pdata);
|
|
void tmio_mmc_host_remove(struct tmio_mmc_host *host);
|
|
void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
|
|
|
|
void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
|
|
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
|
|
|
|
static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
|
|
unsigned long *flags)
|
|
{
|
|
local_irq_save(*flags);
|
|
return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
|
|
}
|
|
|
|
static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
|
|
unsigned long *flags, void *virt)
|
|
{
|
|
kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ);
|
|
local_irq_restore(*flags);
|
|
}
|
|
|
|
#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE)
|
|
void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data);
|
|
void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata);
|
|
void tmio_mmc_release_dma(struct tmio_mmc_host *host);
|
|
#else
|
|
static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host,
|
|
struct mmc_data *data)
|
|
{
|
|
}
|
|
|
|
static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host,
|
|
struct tmio_mmc_data *pdata)
|
|
{
|
|
host->chan_tx = NULL;
|
|
host->chan_rx = NULL;
|
|
}
|
|
|
|
static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif
|