path: root/drivers/bluetooth/btmrvl_sdio.c

/**
 * Marvell BT-over-SDIO driver: SDIO interface related functions.
 *
 * Copyright (C) 2009, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 **/

#include <linux/firmware.h>
#include <linux/slab.h>

#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include <linux/module.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btmrvl_drv.h"
#include "btmrvl_sdio.h"

#define VERSION "1.0"

/* The btmrvl_sdio_remove() callback function is called
 * when user removes this module from kernel space or ejects
 * the card from the slot. The driver handles these 2 cases
 * differently.
 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
 * command is sent to firmware and interrupt will be disabled.
 * If the card is removed, there is no need to send command
 * or disable interrupt.
 *
 * The variable 'user_rmmod' is used to distinguish these two
 * scenarios. This flag is initialized as FALSE in case the card
 * is removed, and will be set to TRUE for module removal when
 * module_exit function is called.
 */
static u8 user_rmmod;
static u8 sdio_ireg;

static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
	.cfg = 0x03,
	.host_int_mask = 0x04,
	.host_intstatus = 0x05,
	.card_status = 0x20,
	.sq_read_base_addr_a0 = 0x10,
	.sq_read_base_addr_a1 = 0x11,
	.card_fw_status0 = 0x40,
	.card_fw_status1 = 0x41,
	.card_rx_len = 0x42,
	.card_rx_unit = 0x43,
	.io_port_0 = 0x00,
	.io_port_1 = 0x01,
	.io_port_2 = 0x02,
};
static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
	.cfg = 0x00,
	.host_int_mask = 0x02,
	.host_intstatus = 0x03,
	.card_status = 0x30,
	.sq_read_base_addr_a0 = 0x40,
	.sq_read_base_addr_a1 = 0x41,
	.card_revision = 0x5c,
	.card_fw_status0 = 0x60,
	.card_fw_status1 = 0x61,
	.card_rx_len = 0x62,
	.card_rx_unit = 0x63,
	.io_port_0 = 0x78,
	.io_port_1 = 0x79,
	.io_port_2 = 0x7a,
};

static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
	.helper		= "sd8688_helper.bin",
	.firmware	= "sd8688.bin",
	.reg		= &btmrvl_reg_8688,
	.sd_blksz_fw_dl	= 64,
};

static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
	.helper		= NULL,
	.firmware	= "mrvl/sd8787_uapsta.bin",
	.reg		= &btmrvl_reg_87xx,
	.sd_blksz_fw_dl	= 256,
};

static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
	.helper		= NULL,
	.firmware	= "mrvl/sd8797_uapsta.bin",
	.reg		= &btmrvl_reg_87xx,
	.sd_blksz_fw_dl	= 256,
};

static const struct sdio_device_id btmrvl_sdio_ids[] = {
	/* Marvell SD8688 Bluetooth device */
	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
			.driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
	/* Marvell SD8787 Bluetooth device */
	{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
			.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
	/* Marvell SD8797 Bluetooth device */
	{ SDIO_DEVICE