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path: root/drivers/staging/cg2900/board-u5500-cg2900.c
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/*
 * Copyright (C) ST-Ericsson SA 2011
 *
 * License terms: GNU General Public License (GPL) version 2
 */

#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio/nomadik.h>

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

#include <plat/pincfg.h>

#include "devices-cg2900.h"
#include "pins-db5500.h"

#define CG2900_BT_CTS_GPIO		168

enum cg2900_gpio_pull_sleep cg2900_sleep_gpio[21] = {
	CG2900_NO_PULL,		/* GPIO 0:  PTA_CONFX */
	CG2900_PULL_DN,		/* GPIO 1:  PTA_STATUS */
	CG2900_NO_PULL,		/* GPIO 2:  UART_CTSN */
	CG2900_PULL_UP,		/* GPIO 3:  UART_RTSN */
	CG2900_PULL_UP,		/* GPIO 4:  UART_TXD */
	CG2900_NO_PULL,		/* GPIO 5:  UART_RXD */
	CG2900_PULL_DN,		/* GPIO 6:  IOM_DOUT */
	CG2900_NO_PULL,		/* GPIO 7:  IOM_FSC */
	CG2900_NO_PULL,		/* GPIO 8:  IOM_CLK */
	CG2900_NO_PULL,		/* GPIO 9:  IOM_DIN */
	CG2900_PULL_DN,		/* GPIO 10: PWR_REQ */
	CG2900_PULL_DN,		/* GPIO 11: HOST_WAKEUP */
	CG2900_PULL_DN,		/* GPIO 12: IIS_DOUT */
	CG2900_NO_PULL,		/* GPIO 13: IIS_WS */
	CG2900_NO_PULL,		/* GPIO 14: IIS_CLK */
	CG2900_NO_PULL,		/* GPIO 15: IIS_DIN */
	CG2900_PULL_DN,		/* GPIO 16: PTA_FREQ */
	CG2900_PULL_DN,		/* GPIO 17: PTA_RF_ACTIVE */
	CG2900_NO_PULL,		/* GPIO 18: NotConnected (J6428) */
	CG2900_NO_PULL,		/* GPIO 19: EXT_DUTY_CYCLE */
	CG2900_NO_PULL,		/* GPIO 20: EXT_FRM_SYNCH */
};

static struct platform_device ux500_cg2900_device = {
	.name = "cg2900",
};

static struct platform_device ux500_cg2900_chip_device = {
	.name = "cg2900-chip",
	.dev = {
		.parent = &ux500_cg2900_device.dev,
	},
};

static struct cg2900_platform_data cg2900_test_platform_data = {
	.bus = HCI_VIRTUAL,
	.gpio_sleep = cg2900_sleep_gpio,
};

static struct platform_device ux500_cg2900_test_device = {
	.name = "cg2900-test",
	.dev = {
		.parent = &ux500_cg2900_device.dev,
		.platform_data = &cg2900_test_platform_data,
	},
};

static struct resource cg2900_uart_resources[] = {
	{
		.start = CG2900_BT_CTS_GPIO,
		.end = CG2900_BT_CTS_GPIO,
		.flags = IORESOURCE_IO,
		.name = "cts_gpio",
	},
	{
		.start = NOMADIK_GPIO_TO_IRQ(CG2900_BT_CTS_GPIO),
		.end = NOMADIK_GPIO_TO_IRQ(CG2900_BT_CTS_GPIO),
		.flags = IORESOURCE_IRQ,
		.name = "cts_irq",
	},
};

static pin_cfg_t cg2900_uart_enabled[] = {
	GPIO165_U3_RXD		| PIN_INPUT_PULLUP,
	GPIO166_U3_TXD		| PIN_OUTPUT_HIGH,
	GPIO167_U3_RTSn		| PIN_OUTPUT_HIGH,
	GPIO168_U3_CTSn		| PIN_INPUT_PULLUP,
};

static pin_cfg_t cg2900_uart_disabled[] = {
	GPIO165_GPIO   | PIN_INPUT_PULLUP,	/* RX pull down. */
	GPIO166_GPIO   | PIN_OUTPUT_LOW,	/* TX low - break on. */
	GPIO167_GPIO   | PIN_OUTPUT_HIGH,	/* RTS high-flow off. */
	GPIO168_GPIO   | PIN_INPUT_PULLUP,	/* CTS pull up. */
};

static struct cg2900_platform_data cg2900_uart_platform_data = {
	.bus = HCI_UART,
	.gpio_sleep = cg2900_sleep_gpio,
	.uart = {
		.n_uart_gpios = 4,
		.uart_enabled = cg2900_uart_enabled,
		.uart_disabled = cg2900_uart_disabled,
	},
};

static struct platform_device ux500_cg2900_uart_device = {
	.name = "cg2900-uart",
	.dev = {
		.platform_data = &cg2900_uart_platform_data,
		.parent = &ux500_cg2900_device.dev,
	},
	.num_resources = ARRAY_SIZE(cg2900_uart_resources),
	.resource = cg2900_uart_resources,
};

static int __init u5500_cg2900_init(void)
{
	int err;

	dcg2900_init_platdata(&cg2900_test_platform_data);
	dcg2900_init_platdata(&cg2900_uart_platform_data);

	err = platform_device_register(&ux500_cg2900_device);
	if (err)
		return err;
	err = platform_device_register(&ux500_cg2900_uart_device);
	if (err)
		return err;
	err = platform_device_register(&ux500_cg2900_test_device);
	if (err)
		return err;
	err = platform_device_register(&ux500_cg2900_chip_device);
	if (err)
		return err;

	dev_info(&ux500_cg2900_device.dev, "CG2900 initialized\n");

	return 0;
}

static void __exit u5500_cg2900_exit(void)
{
	platform_device_unregister(&ux500_cg2900_chip_device);
	platform_device_unregister(&ux500_cg2900_test_device);
	platform_device_unregister(&ux500_cg2900_uart_device);
	platform_device_unregister(&ux500_cg2900_device);

	dev_info(&ux500_cg2900_device.dev, "CG2900 removed\n");
}

module_init(u5500_cg2900_init);
module_exit(u5500_cg2900_exit);