xref: /openbmc/linux/drivers/mmc/host/cb710-mmc.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  cb710/cb710-mmc.h
 *
 *  Copyright by Michał Mirosław, 2008-2009
 */
#ifndef LINUX_CB710_MMC_H
#define LINUX_CB710_MMC_H

#include <linux/cb710.h>

/* per-MMC-reader structure */
struct cb710_mmc_reader {
	struct tasklet_struct finish_req_tasklet;
	struct mmc_request *mrq;
	spinlock_t irq_lock;
	unsigned char last_power_mode;
};

/* some device struct walking */

static inline struct mmc_host *cb710_slot_to_mmc(struct cb710_slot *slot)
{
	return platform_get_drvdata(&slot->pdev);
}

static inline struct cb710_slot *cb710_mmc_to_slot(struct mmc_host *mmc)
{
	struct platform_device *pdev = to_platform_device(mmc_dev(mmc));
	return cb710_pdev_to_slot(pdev);
}

/* registers (this might be all wrong ;) */

#define CB710_MMC_DATA_PORT		0x00

#define CB710_MMC_CONFIG_PORT		0x04
#define CB710_MMC_CONFIG0_PORT		0x04
#define CB710_MMC_CONFIG1_PORT		0x05
#define   CB710_MMC_C1_4BIT_DATA_BUS		0x40
#define CB710_MMC_CONFIG2_PORT		0x06
#define   CB710_MMC_C2_READ_PIO_SIZE_MASK	0x0F	/* N-1 */
#define CB710_MMC_CONFIG3_PORT		0x07

#define CB710_MMC_CONFIGB_PORT		0x08

#define CB710_MMC_IRQ_ENABLE_PORT	0x0C
#define   CB710_MMC_IE_TEST_MASK		0x00BF
#define   CB710_MMC_IE_CARD_INSERTION_STATUS	0x1000
#define   CB710_MMC_IE_IRQ_ENABLE		0x8000
#define   CB710_MMC_IE_CISTATUS_MASK		\
		(CB710_MMC_IE_CARD_INSERTION_STATUS|CB710_MMC_IE_IRQ_ENABLE)

#define CB710_MMC_STATUS_PORT		0x10
#define   CB710_MMC_STATUS_ERROR_EVENTS		0x60FF
#define CB710_MMC_STATUS0_PORT		0x10
#define   CB710_MMC_S0_FIFO_UNDERFLOW		0x40
#define CB710_MMC_STATUS1_PORT		0x11
#define   CB710_MMC_S1_COMMAND_SENT		0x01
#define   CB710_MMC_S1_DATA_TRANSFER_DONE	0x02
#define   CB710_MMC_S1_PIO_TRANSFER_DONE	0x04
#define   CB710_MMC_S1_CARD_CHANGED		0x10
#define   CB710_MMC_S1_RESET			0x20
#define CB710_MMC_STATUS2_PORT		0x12
#define   CB710_MMC_S2_FIFO_READY		0x01
#define   CB710_MMC_S2_FIFO_EMPTY		0x02
#define   CB710_MMC_S2_BUSY_10			0x10
#define   CB710_MMC_S2_BUSY_20			0x20
#define CB710_MMC_STATUS3_PORT		0x13
#define   CB710_MMC_S3_CARD_DETECTED		0x02
#define   CB710_MMC_S3_WRITE_PROTECTED		0x04

#define CB710_MMC_CMD_TYPE_PORT		0x14
#define   CB710_MMC_RSP_TYPE_MASK		0x0007
#define     CB710_MMC_RSP_R1			(0)
#define     CB710_MMC_RSP_136			(5)
#define     CB710_MMC_RSP_NO_CRC		(2)
#define   CB710_MMC_RSP_PRESENT_MASK		0x0018
#define     CB710_MMC_RSP_NONE			(0 << 3)
#define     CB710_MMC_RSP_PRESENT		(1 << 3)
#define     CB710_MMC_RSP_PRESENT_X		(2 << 3)
#define   CB710_MMC_CMD_TYPE_MASK		0x0060
#define     CB710_MMC_CMD_BC			(0 << 5)
#define     CB710_MMC_CMD_BCR			(1 << 5)
#define     CB710_MMC_CMD_AC			(2 << 5)
#define     CB710_MMC_CMD_ADTC			(3 << 5)
#define   CB710_MMC_DATA_READ			0x0080
#define   CB710_MMC_CMD_CODE_MASK		0x3F00
#define   CB710_MMC_CMD_CODE_SHIFT		8
#define   CB710_MMC_IS_APP_CMD			0x4000
#define   CB710_MMC_RSP_BUSY			0x8000

#define CB710_MMC_CMD_PARAM_PORT	0x18
#define CB710_MMC_TRANSFER_SIZE_PORT	0x1C
#define CB710_MMC_RESPONSE0_PORT	0x20
#define CB710_MMC_RESPONSE1_PORT	0x24
#define CB710_MMC_RESPONSE2_PORT	0x28
#define CB710_MMC_RESPONSE3_PORT	0x2C

#endif /* LINUX_CB710_MMC_H */