/arch/arm/mach-omap/board-voiceblue.c

  1/*
  2 * linux/arch/arm/mach-omap/board-voiceblue.c
  3 *
  4 * Modified from board-generic.c
  5 *
  6 * Copyright (C) 2004 2N Telekomunikace, Ladislav Michl <michl@2n.cz>
  7 *
  8 * Code for OMAP5910 based VoiceBlue board (VoIP to GSM gateway).
  9 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of the GNU General Public License version 2 as
 12 * published by the Free Software Foundation.
 13 */
 14
 15#include <linux/delay.h>
 16#include <linux/device.h>
 17#include <linux/interrupt.h>
 18#include <linux/init.h>
 19#include <linux/kernel.h>
 20#include <linux/notifier.h>
 21#include <linux/reboot.h>
 22#include <linux/serial_8250.h>
 23#include <linux/serial_reg.h>
 24
 25#include <asm/hardware.h>
 26#include <asm/mach-types.h>
 27#include <asm/mach/arch.h>
 28#include <asm/mach/map.h>
 29
 30#include <asm/arch/gpio.h>
 31#include <asm/arch/tc.h>
 32#include <asm/arch/mux.h>
 33#include <asm/arch/usb.h>
 34
 35#include "common.h"
 36
 37extern void omap_init_time(void);
 38extern int omap_gpio_init(void);
 39
 40static struct plat_serial8250_port voiceblue_ports[] = {
 41	{
 42		.mapbase	= (unsigned long)(OMAP_CS1_PHYS + 0x40000),
 43		.irq		= OMAP_GPIO_IRQ(12),
 44		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 45		.iotype		= UPIO_MEM,
 46		.regshift	= 1,
 47		.uartclk	= 3686400,
 48	},
 49	{
 50		.mapbase	= (unsigned long)(OMAP_CS1_PHYS + 0x50000),
 51		.irq		= OMAP_GPIO_IRQ(13),
 52		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 53		.iotype		= UPIO_MEM,
 54		.regshift	= 1,
 55		.uartclk	= 3686400,
 56	},
 57	{
 58		.mapbase	= (unsigned long)(OMAP_CS1_PHYS + 0x60000),
 59		.irq		= OMAP_GPIO_IRQ(14),
 60		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 61		.iotype		= UPIO_MEM,
 62		.regshift	= 1,
 63		.uartclk	= 3686400,
 64	},
 65	{
 66		.mapbase	= (unsigned long)(OMAP_CS1_PHYS + 0x70000),
 67		.irq		= OMAP_GPIO_IRQ(15),
 68		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 69		.iotype		= UPIO_MEM,
 70		.regshift	= 1,
 71		.uartclk	= 3686400,
 72	},
 73	{ },
 74};
 75
 76static struct platform_device serial_device = {
 77	.name			= "serial8250",
 78	.id			= 1,
 79	.dev			= {
 80		.platform_data	= voiceblue_ports,
 81	},
 82};
 83
 84static int __init ext_uart_init(void)
 85{
 86	return platform_device_register(&serial_device);
 87}
 88arch_initcall(ext_uart_init);
 89
 90static struct resource voiceblue_smc91x_resources[] = {
 91	[0] = {
 92		.start	= OMAP_CS2_PHYS + 0x300,
 93		.end	= OMAP_CS2_PHYS + 0x300 + 16,
 94		.flags	= IORESOURCE_MEM,
 95	},
 96	[1] = {
 97		.start	= OMAP_GPIO_IRQ(8),
 98		.end	= OMAP_GPIO_IRQ(8),
 99		.flags	= IORESOURCE_IRQ,
100	},
101};
102
103static struct platform_device voiceblue_smc91x_device = {
104	.name		= "smc91x",
105	.id		= 0,
106	.num_resources	= ARRAY_SIZE(voiceblue_smc91x_resources),
107	.resource	= voiceblue_smc91x_resources,
108};
109
110static struct platform_device *voiceblue_devices[] __initdata = {
111	&voiceblue_smc91x_device,
112};
113
114static struct omap_usb_config voiceblue_usb_config __initdata = {
115	.hmc_mode	= 3,
116	.register_host	= 1,
117	.register_dev   = 1,
118	.pins[0]	= 2,
119	.pins[1]	= 6,
120	.pins[2]	= 6,
121};
122
123static struct omap_board_config_kernel voiceblue_config[] = {
124	{ OMAP_TAG_USB, &voiceblue_usb_config },
125};
126
127static void __init voiceblue_init_irq(void)
128{
129	omap_init_irq();
130	omap_gpio_init();
131}
132
133static void __init voiceblue_init(void)
134{
135	/* There is a good chance board is going up, so enable Power LED
136	 * (it is connected through invertor) */
137	omap_writeb(0x00, OMAP_LPG1_LCR);
138	/* Watchdog */
139	omap_request_gpio(0);
140	/* smc91x reset */
141	omap_request_gpio(7);
142	omap_set_gpio_direction(7, 0);
143	omap_set_gpio_dataout(7, 1);
144	udelay(2);	/* wait at least 100ns */
145	omap_set_gpio_dataout(7, 0);
146	mdelay(50);	/* 50ms until PHY ready */
147	/* smc91x interrupt pin */
148	omap_request_gpio(8);
149	omap_set_gpio_edge_ctrl(8, OMAP_GPIO_RISING_EDGE);
150	/* 16C554 reset*/
151	omap_request_gpio(6);
152	omap_set_gpio_direction(6, 0);
153	omap_set_gpio_dataout(6, 0);
154	/* 16C554 interrupt pins */
155	omap_request_gpio(12);
156	omap_request_gpio(13);
157	omap_request_gpio(14);
158	omap_request_gpio(15);
159	omap_set_gpio_edge_ctrl(12, OMAP_GPIO_RISING_EDGE);
160	omap_set_gpio_edge_ctrl(13, OMAP_GPIO_RISING_EDGE);
161	omap_set_gpio_edge_ctrl(14, OMAP_GPIO_RISING_EDGE);
162	omap_set_gpio_edge_ctrl(15, OMAP_GPIO_RISING_EDGE);
163
164	platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
165	omap_board_config = voiceblue_config;
166	omap_board_config_size = ARRAY_SIZE(voiceblue_config);
167}
168
169static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
170
171static void __init voiceblue_map_io(void)
172{
173	omap_map_io();
174	omap_serial_init(omap_serial_ports);
175}
176
177#define MACHINE_PANICED		1
178#define MACHINE_REBOOTING	2
179#define MACHINE_REBOOT		4
180static unsigned long machine_state;
181
182static int panic_event(struct notifier_block *this, unsigned long event,
183	 void *ptr)
184{
185	if (test_and_set_bit(MACHINE_PANICED, &machine_state))
186		return NOTIFY_DONE;
187
188	/* Flash Power LED
189	 * (TODO: Enable clock right way (enabled in bootloader already)) */
190	omap_writeb(0x78, OMAP_LPG1_LCR);
191
192	return NOTIFY_DONE;
193}
194
195static struct notifier_block panic_block = {
196	.notifier_call	= panic_event,
197};
198
199static int __init setup_notifier(void)
200{
201	/* Setup panic notifier */
202	notifier_chain_register(&panic_notifier_list, &panic_block);
203
204	return 0;
205}
206
207postcore_initcall(setup_notifier);
208
209static int wdt_gpio_state;
210
211void voiceblue_wdt_enable(void)
212{
213	omap_set_gpio_direction(0, 0);
214	omap_set_gpio_dataout(0, 0);
215	omap_set_gpio_dataout(0, 1);
216	omap_set_gpio_dataout(0, 0);
217	wdt_gpio_state = 0;
218}
219
220void voiceblue_wdt_disable(void)
221{
222	omap_set_gpio_dataout(0, 0);
223	omap_set_gpio_dataout(0, 1);
224	omap_set_gpio_dataout(0, 0);
225	omap_set_gpio_direction(0, 1);
226}
227
228void voiceblue_wdt_ping(void)
229{
230	if (test_bit(MACHINE_REBOOT, &machine_state))
231		return;
232
233	wdt_gpio_state = !wdt_gpio_state;
234	omap_set_gpio_dataout(0, wdt_gpio_state);
235}
236
237void voiceblue_reset(void)
238{
239	set_bit(MACHINE_REBOOT, &machine_state);
240	voiceblue_wdt_enable();
241	while (1) ;
242}
243
244EXPORT_SYMBOL(voiceblue_wdt_enable);
245EXPORT_SYMBOL(voiceblue_wdt_disable);
246EXPORT_SYMBOL(voiceblue_wdt_ping);
247
248MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
249	MAINTAINER("Ladislav Michl <michl@2n.cz>")
250	BOOT_MEM(0x10000000, 0xfff00000, 0xfef00000)
251	BOOT_PARAMS(0x10000100)
252	MAPIO(voiceblue_map_io)
253	INITIRQ(voiceblue_init_irq)
254	INIT_MACHINE(voiceblue_init)
255	.timer = &omap_timer,
256MACHINE_END