[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / mach-ixp4xx / fsg-setup.c

/*
 * arch/arm/mach-ixp4xx/fsg-setup.c
 *
 * FSG board-setup
 *
 * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
 *
 * based on ixdp425-setup.c:
 *	Copyright (C) 2003-2004 MontaVista Software, Inc.
 * based on nslu2-power.c
 *	Copyright (C) 2005 Tower Technologies
 *
 * Author: Rod Whitby <rod@whitby.id.au>
 * Maintainers: http://www.nslu2-linux.org/
 *
 */

#include <linux/if_ether.h>
#include <linux/irq.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/leds.h>
#include <linux/reboot.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/io.h>

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

static struct flash_platform_data fsg_flash_data = {
	.map_name		= "cfi_probe",
	.width			= 2,
};

static struct resource fsg_flash_resource = {
	.flags			= IORESOURCE_MEM,
};

static struct platform_device fsg_flash = {
	.name			= "IXP4XX-Flash",
	.id			= 0,
	.dev = {
		.platform_data	= &fsg_flash_data,
	},
	.num_resources		= 1,
	.resource		= &fsg_flash_resource,
};

static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
	.sda_pin		= FSG_SDA_PIN,
	.scl_pin		= FSG_SCL_PIN,
};

static struct platform_device fsg_i2c_gpio = {
	.name			= "i2c-gpio",
	.id			= 0,
	.dev = {
		.platform_data	= &fsg_i2c_gpio_data,
	},
};

static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
	{
		I2C_BOARD_INFO("isl1208", 0x6f),
	},
};

static struct resource fsg_uart_resources[] = {
	{
		.start		= IXP4XX_UART1_BASE_PHYS,
		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= IXP4XX_UART2_BASE_PHYS,
		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
		.flags		= IORESOURCE_MEM,
	}
};

static struct plat_serial8250_port fsg_uart_data[] = {
	{
		.mapbase	= IXP4XX_UART1_BASE_PHYS,
		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
		.irq		= IRQ_IXP4XX_UART1,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= IXP4XX_UART_XTAL,
	},
	{
		.mapbase	= IXP4XX_UART2_BASE_PHYS,
		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
		.irq		= IRQ_IXP4XX_UART2,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= IXP4XX_UART_XTAL,
	},
	{ }
};

static struct platform_device fsg_uart = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM,
	.dev = {
		.platform_data	= fsg_uart_data,
	},
	.num_resources		= ARRAY_SIZE(fsg_uart_resources),
	.resource		= fsg_uart_resources,
};

static struct platform_device fsg_leds = {
	.name		= "fsg-led",
	.id		= -1,
};

/* Built-in 10/100 Ethernet MAC interfaces */
static struct eth_plat_info fsg_plat_eth[] = {
	{
		.phy		= 5,
		.rxq		= 3,
		.txreadyq	= 20,
	}, {
		.phy		= 4,
		.rxq		= 4,
		.txreadyq	= 21,
	}
};

static struct platform_device fsg_eth[] = {
	{
		.name			= "ixp4xx_eth",
		.id			= IXP4XX_ETH_NPEB,
		.dev = {
			.platform_data	= fsg_plat_eth,
		},
	}, {
		.name			= "ixp4xx_eth",
		.id			= IXP4XX_ETH_NPEC,
		.dev = {
			.platform_data	= fsg_plat_eth + 1,
		},
	}
};

static struct platform_device *fsg_devices[] __initdata = {
	&fsg_i2c_gpio,
	&fsg_flash,
	&fsg_leds,
	&fsg_eth[0],
	&fsg_eth[1],
};

static irqreturn_t fsg_power_handler(int irq, void *dev_id)
{
	/* Signal init to do the ctrlaltdel action, this will bypass init if
	 * it hasn't started and do a kernel_restart.
	 */
	ctrl_alt_del();

	return IRQ_HANDLED;
}

static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
{
	/* This is the paper-clip reset which does an emergency reboot. */
	printk(KERN_INFO "Restarting system.\n");
	machine_restart(NULL);

	/* This should never be reached. */
	return IRQ_HANDLED;
}

static void __init fsg_init(void)
{
	uint8_t __iomem *f;

	ixp4xx_sys_init();

	fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	fsg_flash_resource.end =
		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;

	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;

	/* Configure CS2 for operation, 8bit and writable */
	*IXP4XX_EXP_CS2 = 0xbfff0002;

	i2c_register_board_info(0, fsg_i2c_board_info,
				ARRAY_SIZE(fsg_i2c_board_info));

	/* This is only useful on a modified machine, but it is valuable
	 * to have it first in order to see debug messages, and so that
	 * it does *not* get removed if platform_add_devices fails!
	 */
	(void)platform_device_register(&fsg_uart);

	platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));

	if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
			IRQF_DISABLED | IRQF_TRIGGER_LOW,
			"FSG reset button", NULL) < 0) {

		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
			gpio_to_irq(FSG_RB_GPIO));
	}

	if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
			IRQF_DISABLED | IRQF_TRIGGER_LOW,
			"FSG power button", NULL) < 0) {

		printk(KERN_DEBUG "Power Button IRQ %d not available\n",
			gpio_to_irq(FSG_SB_GPIO));
	}

	/*
	 * Map in a portion of the flash and read the MAC addresses.
	 * Since it is stored in BE in the flash itself, we need to
	 * byteswap it if we're in LE mode.
	 */
	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
	if (f) {
#ifdef __ARMEB__
		int i;
		for (i = 0; i < 6; i++) {
			fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
			fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
		}
#else

		/*
		  Endian-swapped reads from unaligned addresses are
		  required to extract the two MACs from the big-endian
		  Redboot config area in flash.
		*/

		fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
		fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
		fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
		fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
		fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
		fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);

		fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
		fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
		fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
		fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
		fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
		fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
#endif
		iounmap(f);
	}
	printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
	       fsg_plat_eth[0].hwaddr);
	printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
	       fsg_plat_eth[1].hwaddr);

}

MACHINE_START(FSG, "Freecom FSG-3")
	/* Maintainer: www.nslu2-linux.org */
	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
	.map_io		= ixp4xx_map_io,
	.init_irq	= ixp4xx_init_irq,
	.timer		= &ixp4xx_timer,
	.boot_params	= 0x0100,
	.init_machine	= fsg_init,
MACHINE_END
Commit	Line	Data
7e36e2f5 RW	1	/*
	2	* arch/arm/mach-ixp4xx/fsg-setup.c
	3	*
	4	* FSG board-setup
	5	*
	6	* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
	7	*
	8	* based on ixdp425-setup.c:
	9	* Copyright (C) 2003-2004 MontaVista Software, Inc.
	10	* based on nslu2-power.c
	11	* Copyright (C) 2005 Tower Technologies
	12	*
	13	* Author: Rod Whitby <rod@whitby.id.au>
	14	* Maintainers: http://www.nslu2-linux.org/
	15	*
	16	*/
	17
	18	#include <linux/if_ether.h>
	19	#include <linux/irq.h>
	20	#include <linux/serial.h>
	21	#include <linux/serial_8250.h>
	22	#include <linux/leds.h>
	23	#include <linux/reboot.h>
	24	#include <linux/i2c.h>
	25	#include <linux/i2c-gpio.h>
fced80c7	26	#include <linux/io.h>
7e36e2f5 RW	27
	28	#include <asm/mach-types.h>
	29	#include <asm/mach/arch.h>
	30	#include <asm/mach/flash.h>
7e36e2f5 RW	31	#include <asm/gpio.h>
	32
	33	static struct flash_platform_data fsg_flash_data = {
	34	.map_name = "cfi_probe",
	35	.width = 2,
	36	};
	37
	38	static struct resource fsg_flash_resource = {
	39	.flags = IORESOURCE_MEM,
	40	};
	41
	42	static struct platform_device fsg_flash = {
	43	.name = "IXP4XX-Flash",
	44	.id = 0,
	45	.dev = {
	46	.platform_data = &fsg_flash_data,
	47	},
	48	.num_resources = 1,
	49	.resource = &fsg_flash_resource,
	50	};
	51
	52	static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
	53	.sda_pin = FSG_SDA_PIN,
	54	.scl_pin = FSG_SCL_PIN,
	55	};
	56
	57	static struct platform_device fsg_i2c_gpio = {
	58	.name = "i2c-gpio",
	59	.id = 0,
	60	.dev = {
	61	.platform_data = &fsg_i2c_gpio_data,
	62	},
	63	};
	64
	65	static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
	66	{
d90c1add	67	I2C_BOARD_INFO("isl1208", 0x6f),
7e36e2f5 RW	68	},
	69	};
	70
	71	static struct resource fsg_uart_resources[] = {
	72	{
	73	.start = IXP4XX_UART1_BASE_PHYS,
	74	.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
	75	.flags = IORESOURCE_MEM,
	76	},
	77	{
	78	.start = IXP4XX_UART2_BASE_PHYS,
	79	.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
	80	.flags = IORESOURCE_MEM,
	81	}
	82	};
	83
	84	static struct plat_serial8250_port fsg_uart_data[] = {
	85	{
	86	.mapbase = IXP4XX_UART1_BASE_PHYS,
	87	.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
	88	.irq = IRQ_IXP4XX_UART1,
	89	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
	90	.iotype = UPIO_MEM,
	91	.regshift = 2,
	92	.uartclk = IXP4XX_UART_XTAL,
	93	},
	94	{
	95	.mapbase = IXP4XX_UART2_BASE_PHYS,
	96	.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
	97	.irq = IRQ_IXP4XX_UART2,
	98	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
	99	.iotype = UPIO_MEM,
	100	.regshift = 2,
	101	.uartclk = IXP4XX_UART_XTAL,
	102	},
	103	{ }
	104	};
	105
	106	static struct platform_device fsg_uart = {
	107	.name = "serial8250",
	108	.id = PLAT8250_DEV_PLATFORM,
	109	.dev = {
	110	.platform_data = fsg_uart_data,
	111	},
	112	.num_resources = ARRAY_SIZE(fsg_uart_resources),
	113	.resource = fsg_uart_resources,
	114	};
	115
	116	static struct platform_device fsg_leds = {
	117	.name = "fsg-led",
	118	.id = -1,
	119	};
	120
	121	/* Built-in 10/100 Ethernet MAC interfaces */
	122	static struct eth_plat_info fsg_plat_eth[] = {
	123	{
	124	.phy = 5,
	125	.rxq = 3,
	126	.txreadyq = 20,
	127	}, {
	128	.phy = 4,
	129	.rxq = 4,
	130	.txreadyq = 21,
	131	}
132	};
133
134	static struct platform_device fsg_eth[] = {
135	{
136	.name = "ixp4xx_eth",
137	.id = IXP4XX_ETH_NPEB,
138	.dev = {
139	.platform_data = fsg_plat_eth,
140	},
141	}, {
142	.name = "ixp4xx_eth",
143	.id = IXP4XX_ETH_NPEC,
144	.dev = {
145	.platform_data = fsg_plat_eth + 1,
146	},
147	}
148	};
149
150	static struct platform_device *fsg_devices[] __initdata = {
151	&fsg_i2c_gpio,
152	&fsg_flash,
153	&fsg_leds,
154	&fsg_eth[0],
155	&fsg_eth[1],
156	};
157
158	static irqreturn_t fsg_power_handler(int irq, void *dev_id)
159	{
160	/* Signal init to do the ctrlaltdel action, this will bypass init if
161	* it hasn't started and do a kernel_restart.
162	*/
163	ctrl_alt_del();
164
165	return IRQ_HANDLED;
166	}
167
168	static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
169	{
170	/* This is the paper-clip reset which does an emergency reboot. */
171	printk(KERN_INFO "Restarting system.\n");
172	machine_restart(NULL);
173
174	/* This should never be reached. */
175	return IRQ_HANDLED;
176	}
177
178	static void __init fsg_init(void)
179	{
7e36e2f5	180	uint8_t __iomem *f;
7e36e2f5 RW	181
	182	ixp4xx_sys_init();
	183
	184	fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	185	fsg_flash_resource.end =
	186	IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
	187
	188	*IXP4XX_EXP_CS0 \|= IXP4XX_FLASH_WRITABLE;
	189	IXP4XX_EXP_CS1 = IXP4XX_EXP_CS0;
	190
	191	/* Configure CS2 for operation, 8bit and writable */
	192	*IXP4XX_EXP_CS2 = 0xbfff0002;
	193
	194	i2c_register_board_info(0, fsg_i2c_board_info,
	195	ARRAY_SIZE(fsg_i2c_board_info));
	196
	197	/* This is only useful on a modified machine, but it is valuable
	198	* to have it first in order to see debug messages, and so that
	199	* it does not get removed if platform_add_devices fails!
	200	*/
	201	(void)platform_device_register(&fsg_uart);
	202
	203	platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
	204
	205	if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
	206	IRQF_DISABLED \| IRQF_TRIGGER_LOW,
	207	"FSG reset button", NULL) < 0) {
	208
	209	printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
	210	gpio_to_irq(FSG_RB_GPIO));
	211	}
	212
	213	if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
	214	IRQF_DISABLED \| IRQF_TRIGGER_LOW,
	215	"FSG power button", NULL) < 0) {
	216
	217	printk(KERN_DEBUG "Power Button IRQ %d not available\n",
	218	gpio_to_irq(FSG_SB_GPIO));
	219	}
	220
	221	/*
	222	* Map in a portion of the flash and read the MAC addresses.
	223	* Since it is stored in BE in the flash itself, we need to
	224	* byteswap it if we're in LE mode.
	225	*/
	226	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
	227	if (f) {
	228	#ifdef __ARMEB__
d90c1add	229	int i;
7e36e2f5 RW	230	for (i = 0; i < 6; i++) {
	231	fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
	232	fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
	233	}
	234	#else
	235
	236	/*
	237	Endian-swapped reads from unaligned addresses are
	238	required to extract the two MACs from the big-endian
	239	Redboot config area in flash.
	240	*/
	241
	242	fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
	243	fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
	244	fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
	245	fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
	246	fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
	247	fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);
	248
	249	fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
	250	fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
	251	fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
	252	fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
	253	fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
	254	fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
	255	#endif
	256	iounmap(f);
	257	}
e174961c JB	258	printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
	259	fsg_plat_eth[0].hwaddr);
	260	printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
	261	fsg_plat_eth[1].hwaddr);
7e36e2f5 RW	262
	263	}
	264
	265	MACHINE_START(FSG, "Freecom FSG-3")
	266	/* Maintainer: www.nslu2-linux.org */
	267	.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
	268	.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
	269	.map_io = ixp4xx_map_io,
	270	.init_irq = ixp4xx_init_irq,
	271	.timer = &ixp4xx_timer,
	272	.boot_params = 0x0100,
	273	.init_machine = fsg_init,
	274	MACHINE_END
	275