[deliverable/linux.git] / arch / arm / mach-davinci / board-dm646x-evm.c

/*
 * TI DaVinci DM646X EVM board
 *
 * Derived from: arch/arm/mach-davinci/board-evm.c
 * Copyright (C) 2006 Texas Instruments.
 *
 * (C) 2007-2008, MontaVista Software, Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 *
 */

/**************************************************************************
 * Included Files
 **************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <linux/root_dev.h>
#include <linux/dma-mapping.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/i2c/pcf857x.h>
#include <linux/etherdevice.h>

#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <mach/dm646x.h>
#include <mach/common.h>
#include <mach/psc.h>
#include <mach/serial.h>
#include <mach/i2c.h>
#include <mach/mmc.h>
#include <mach/emac.h>

#define DM646X_EVM_PHY_MASK		(0x2)
#define DM646X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */

static struct davinci_uart_config uart_config __initdata = {
	.enabled_uarts = (1 << 0),
};

/* LEDS */

static struct gpio_led evm_leds[] = {
	{ .name = "DS1", .active_low = 1, },
	{ .name = "DS2", .active_low = 1, },
	{ .name = "DS3", .active_low = 1, },
	{ .name = "DS4", .active_low = 1, },
};

static __initconst struct gpio_led_platform_data evm_led_data = {
	.num_leds = ARRAY_SIZE(evm_leds),
	.leds     = evm_leds,
};

static struct platform_device *evm_led_dev;

static int evm_led_setup(struct i2c_client *client, int gpio,
			unsigned int ngpio, void *c)
{
	struct gpio_led *leds = evm_leds;
	int status;

	while (ngpio--) {
		leds->gpio = gpio++;
		leds++;
	};

	evm_led_dev = platform_device_alloc("leds-gpio", 0);
	platform_device_add_data(evm_led_dev, &evm_led_data,
				sizeof(evm_led_data));

	evm_led_dev->dev.parent = &client->dev;
	status = platform_device_add(evm_led_dev);
	if (status < 0) {
		platform_device_put(evm_led_dev);
		evm_led_dev = NULL;
	}
	return status;
}

static int evm_led_teardown(struct i2c_client *client, int gpio,
				unsigned ngpio, void *c)
{
	if (evm_led_dev) {
		platform_device_unregister(evm_led_dev);
		evm_led_dev = NULL;
	}
	return 0;
}

static int evm_sw_gpio[4] = { -EINVAL, -EINVAL, -EINVAL, -EINVAL };

static int evm_sw_setup(struct i2c_client *client, int gpio,
			unsigned ngpio, void *c)
{
	int status;
	int i;
	char label[10];

	for (i = 0; i < 4; ++i) {
		snprintf(label, 10, "user_sw%d", i);
		status = gpio_request(gpio, label);
		if (status)
			goto out_free;
		evm_sw_gpio[i] = gpio++;

		status = gpio_direction_input(evm_sw_gpio[i]);
		if (status) {
			gpio_free(evm_sw_gpio[i]);
			evm_sw_gpio[i] = -EINVAL;
			goto out_free;
		}

		status = gpio_export(evm_sw_gpio[i], 0);
		if (status) {
			gpio_free(evm_sw_gpio[i]);
			evm_sw_gpio[i] = -EINVAL;
			goto out_free;
		}
	}
	return status;
out_free:
	for (i = 0; i < 4; ++i) {
		if (evm_sw_gpio[i] != -EINVAL) {
			gpio_free(evm_sw_gpio[i]);
			evm_sw_gpio[i] = -EINVAL;
		}
	}
	return status;
}

static int evm_sw_teardown(struct i2c_client *client, int gpio,
			unsigned ngpio, void *c)
{
	int i;

	for (i = 0; i < 4; ++i) {
		if (evm_sw_gpio[i] != -EINVAL) {
			gpio_unexport(evm_sw_gpio[i]);
			gpio_free(evm_sw_gpio[i]);
			evm_sw_gpio[i] = -EINVAL;
		}
	}
	return 0;
}

static int evm_pcf_setup(struct i2c_client *client, int gpio,
			unsigned int ngpio, void *c)
{
	int status;

	if (ngpio < 8)
		return -EINVAL;

	status = evm_sw_setup(client, gpio, 4, c);
	if (status)
		return status;

	return evm_led_setup(client, gpio+4, 4, c);
}

static int evm_pcf_teardown(struct i2c_client *client, int gpio,
			unsigned int ngpio, void *c)
{
	BUG_ON(ngpio < 8);

	evm_sw_teardown(client, gpio, 4, c);
	evm_led_teardown(client, gpio+4, 4, c);

	return 0;
}

static struct pcf857x_platform_data pcf_data = {
	.gpio_base	= DAVINCI_N_GPIO+1,
	.setup		= evm_pcf_setup,
	.teardown	= evm_pcf_teardown,
};

/* Most of this EEPROM is unused, but U-Boot uses some data:
 *  - 0x7f00, 6 bytes Ethernet Address
 *  - ... newer boards may have more
 */

static struct at24_platform_data eeprom_info = {
	.byte_len       = (256*1024) / 8,
	.page_size      = 64,
	.flags          = AT24_FLAG_ADDR16,
	.setup          = davinci_get_mac_addr,
	.context	= (void *)0x7f00,
};

static struct i2c_board_info __initdata i2c_info[] =  {
	{
		I2C_BOARD_INFO("24c256", 0x50),
		.platform_data  = &eeprom_info,
	},
	{
		I2C_BOARD_INFO("pcf8574a", 0x38),
		.platform_data	= &pcf_data,
	},
};

static struct davinci_i2c_platform_data i2c_pdata = {
	.bus_freq       = 100 /* kHz */,
	.bus_delay      = 0 /* usec */,
};

static void __init evm_init_i2c(void)
{
	davinci_init_i2c(&i2c_pdata);
	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}

static void __init davinci_map_io(void)
{
	dm646x_init();
}

static __init void evm_init(void)
{
	struct davinci_soc_info *soc_info = &davinci_soc_info;

	evm_init_i2c();
	davinci_serial_init(&uart_config);

	soc_info->emac_pdata->phy_mask = DM646X_EVM_PHY_MASK;
	soc_info->emac_pdata->mdio_max_freq = DM646X_EVM_MDIO_FREQUENCY;
}

static __init void davinci_dm646x_evm_irq_init(void)
{
	davinci_irq_init();
}

MACHINE_START(DAVINCI_DM6467_EVM, "DaVinci DM646x EVM")
	.phys_io      = IO_PHYS,
	.io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
	.boot_params  = (0x80000100),
	.map_io       = davinci_map_io,
	.init_irq     = davinci_dm646x_evm_irq_init,
	.timer        = &davinci_timer,
	.init_machine = evm_init,
MACHINE_END
Commit	Line	Data
e38d92fd KH	1	/*
	2	* TI DaVinci DM646X EVM board
	3	*
	4	* Derived from: arch/arm/mach-davinci/board-evm.c
	5	* Copyright (C) 2006 Texas Instruments.
	6	*
	7	* (C) 2007-2008, MontaVista Software, Inc.
	8	*
	9	* This file is licensed under the terms of the GNU General Public License
	10	* version 2. This program is licensed "as is" without any warranty of any
	11	* kind, whether express or implied.
	12	*
	13	*/
	14
	15	/**************************************************************************
	16	* Included Files
	17	**************************************************************************/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/module.h>
	21	#include <linux/init.h>
	22	#include <linux/fs.h>
	23	#include <linux/major.h>
	24	#include <linux/root_dev.h>
	25	#include <linux/dma-mapping.h>
	26	#include <linux/serial.h>
	27	#include <linux/serial_8250.h>
	28	#include <linux/leds.h>
	29	#include <linux/gpio.h>
	30	#include <linux/io.h>
	31	#include <linux/platform_device.h>
	32	#include <linux/i2c.h>
	33	#include <linux/i2c/at24.h>
	34	#include <linux/i2c/pcf857x.h>
	35	#include <linux/etherdevice.h>
	36
	37	#include <asm/setup.h>
	38	#include <asm/mach-types.h>
	39	#include <asm/mach/arch.h>
	40	#include <asm/mach/map.h>
	41	#include <asm/mach/flash.h>
	42
	43	#include <mach/dm646x.h>
	44	#include <mach/common.h>
	45	#include <mach/psc.h>
	46	#include <mach/serial.h>
	47	#include <mach/i2c.h>
ac7b75b5 KH	48	#include <mach/mmc.h>
	49	#include <mach/emac.h>
	50
	51	#define DM646X_EVM_PHY_MASK (0x2)
	52	#define DM646X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
	53
e38d92fd KH	54	static struct davinci_uart_config uart_config __initdata = {
	55	.enabled_uarts = (1 << 0),
	56	};
	57
	58	/* LEDS */
	59
	60	static struct gpio_led evm_leds[] = {
	61	{ .name = "DS1", .active_low = 1, },
	62	{ .name = "DS2", .active_low = 1, },
	63	{ .name = "DS3", .active_low = 1, },
	64	{ .name = "DS4", .active_low = 1, },
	65	};
	66
	67	static __initconst struct gpio_led_platform_data evm_led_data = {
	68	.num_leds = ARRAY_SIZE(evm_leds),
	69	.leds = evm_leds,
	70	};
	71
	72	static struct platform_device *evm_led_dev;
	73
	74	static int evm_led_setup(struct i2c_client *client, int gpio,
	75	unsigned int ngpio, void *c)
	76	{
	77	struct gpio_led *leds = evm_leds;
	78	int status;
	79
	80	while (ngpio--) {
	81	leds->gpio = gpio++;
	82	leds++;
	83	};
	84
	85	evm_led_dev = platform_device_alloc("leds-gpio", 0);
	86	platform_device_add_data(evm_led_dev, &evm_led_data,
	87	sizeof(evm_led_data));
	88
	89	evm_led_dev->dev.parent = &client->dev;
	90	status = platform_device_add(evm_led_dev);
	91	if (status < 0) {
	92	platform_device_put(evm_led_dev);
	93	evm_led_dev = NULL;
	94	}
	95	return status;
	96	}
	97
	98	static int evm_led_teardown(struct i2c_client *client, int gpio,
	99	unsigned ngpio, void *c)
	100	{
	101	if (evm_led_dev) {
	102	platform_device_unregister(evm_led_dev);
	103	evm_led_dev = NULL;
	104	}
	105	return 0;
	106	}
	107
	108	static int evm_sw_gpio[4] = { -EINVAL, -EINVAL, -EINVAL, -EINVAL };
	109
	110	static int evm_sw_setup(struct i2c_client *client, int gpio,
	111	unsigned ngpio, void *c)
	112	{
	113	int status;
	114	int i;
	115	char label[10];
	116
	117	for (i = 0; i < 4; ++i) {
118	snprintf(label, 10, "user_sw%d", i);
119	status = gpio_request(gpio, label);
120	if (status)
121	goto out_free;
122	evm_sw_gpio[i] = gpio++;
123
124	status = gpio_direction_input(evm_sw_gpio[i]);
125	if (status) {
126	gpio_free(evm_sw_gpio[i]);
127	evm_sw_gpio[i] = -EINVAL;
128	goto out_free;
129	}
130
131	status = gpio_export(evm_sw_gpio[i], 0);
132	if (status) {
133	gpio_free(evm_sw_gpio[i]);
134	evm_sw_gpio[i] = -EINVAL;
135	goto out_free;
136	}
137	}
138	return status;
139	out_free:
140	for (i = 0; i < 4; ++i) {
141	if (evm_sw_gpio[i] != -EINVAL) {
142	gpio_free(evm_sw_gpio[i]);
143	evm_sw_gpio[i] = -EINVAL;
144	}
145	}
146	return status;
147	}
148
149	static int evm_sw_teardown(struct i2c_client *client, int gpio,
150	unsigned ngpio, void *c)
151	{
152	int i;
153
154	for (i = 0; i < 4; ++i) {
155	if (evm_sw_gpio[i] != -EINVAL) {
156	gpio_unexport(evm_sw_gpio[i]);
157	gpio_free(evm_sw_gpio[i]);
158	evm_sw_gpio[i] = -EINVAL;
159	}
160	}
161	return 0;
162	}
163
164	static int evm_pcf_setup(struct i2c_client *client, int gpio,
165	unsigned int ngpio, void *c)
166	{
167	int status;
168
169	if (ngpio < 8)
170	return -EINVAL;
171
172	status = evm_sw_setup(client, gpio, 4, c);
173	if (status)
174	return status;
175
176	return evm_led_setup(client, gpio+4, 4, c);
177	}
178
179	static int evm_pcf_teardown(struct i2c_client *client, int gpio,
180	unsigned int ngpio, void *c)
181	{
182	BUG_ON(ngpio < 8);
183
184	evm_sw_teardown(client, gpio, 4, c);
185	evm_led_teardown(client, gpio+4, 4, c);
186
187	return 0;
188	}
189
190	static struct pcf857x_platform_data pcf_data = {
191	.gpio_base = DAVINCI_N_GPIO+1,
192	.setup = evm_pcf_setup,
193	.teardown = evm_pcf_teardown,
194	};
195
196	/* Most of this EEPROM is unused, but U-Boot uses some data:
197	* - 0x7f00, 6 bytes Ethernet Address
198	* - ... newer boards may have more
199	*/
e38d92fd KH	200
	201	static struct at24_platform_data eeprom_info = {
	202	.byte_len = (256*1024) / 8,
	203	.page_size = 64,
	204	.flags = AT24_FLAG_ADDR16,
b14dc0f9 MG	205	.setup = davinci_get_mac_addr,
b14dc0f9 MG	206	.context = (void *)0x7f00,
e38d92fd KH	207	};
e38d92fd KH	208
e38d92fd KH	209	static struct i2c_board_info __initdata i2c_info[] = {
	210	{
	211	I2C_BOARD_INFO("24c256", 0x50),
	212	.platform_data = &eeprom_info,
	213	},
	214	{
	215	I2C_BOARD_INFO("pcf8574a", 0x38),
	216	.platform_data = &pcf_data,
	217	},
	218	};
	219
	220	static struct davinci_i2c_platform_data i2c_pdata = {
	221	.bus_freq = 100 /* kHz */,
	222	.bus_delay = 0 /* usec */,
	223	};
	224
	225	static void __init evm_init_i2c(void)
	226	{
	227	davinci_init_i2c(&i2c_pdata);
	228	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
	229	}
	230
	231	static void __init davinci_map_io(void)
	232	{
e38d92fd KH	233	dm646x_init();
	234	}
	235
	236	static __init void evm_init(void)
	237	{
972412b6 MG	238	struct davinci_soc_info *soc_info = &davinci_soc_info;
972412b6 MG	239
e38d92fd KH	240	evm_init_i2c();
e38d92fd KH	241	davinci_serial_init(&uart_config);
972412b6 MG	242
	243	soc_info->emac_pdata->phy_mask = DM646X_EVM_PHY_MASK;
	244	soc_info->emac_pdata->mdio_max_freq = DM646X_EVM_MDIO_FREQUENCY;
e38d92fd KH	245	}
	246
	247	static __init void davinci_dm646x_evm_irq_init(void)
	248	{
	249	davinci_irq_init();
	250	}
	251
	252	MACHINE_START(DAVINCI_DM6467_EVM, "DaVinci DM646x EVM")
	253	.phys_io = IO_PHYS,
	254	.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
	255	.boot_params = (0x80000100),
	256	.map_io = davinci_map_io,
	257	.init_irq = davinci_dm646x_evm_irq_init,
	258	.timer = &davinci_timer,
	259	.init_machine = evm_init,
	260	MACHINE_END
	261