| 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 | |
| 37 | extern void omap_init_time(void); |
| 38 | extern int omap_gpio_init(void); |
| 39 | |
| 40 | static 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 | |
| 76 | static struct platform_device serial_device = { |
| 77 | .name = "serial8250", |
| 78 | .id = 1, |
| 79 | .dev = { |
| 80 | .platform_data = voiceblue_ports, |
| 81 | }, |
| 82 | }; |
| 83 | |
| 84 | static int __init ext_uart_init(void) |
| 85 | { |
| 86 | return platform_device_register(&serial_device); |
| 87 | } |
| 88 | arch_initcall(ext_uart_init); |
| 89 | |
| 90 | static 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 | |
| 103 | static 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 | |
| 110 | static struct platform_device *voiceblue_devices[] __initdata = { |
| 111 | &voiceblue_smc91x_device, |
| 112 | }; |
| 113 | |
| 114 | static 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 | |
| 123 | static struct omap_board_config_kernel voiceblue_config[] = { |
| 124 | { OMAP_TAG_USB, &voiceblue_usb_config }, |
| 125 | }; |
| 126 | |
| 127 | static void __init voiceblue_init_irq(void) |
| 128 | { |
| 129 | omap_init_irq(); |
| 130 | omap_gpio_init(); |
| 131 | } |
| 132 | |
| 133 | static 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 | |
| 169 | static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1}; |
| 170 | |
| 171 | static 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 |
| 180 | static unsigned long machine_state; |
| 181 | |
| 182 | static 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 | |
| 195 | static struct notifier_block panic_block = { |
| 196 | .notifier_call = panic_event, |
| 197 | }; |
| 198 | |
| 199 | static 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 | |
| 207 | postcore_initcall(setup_notifier); |
| 208 | |
| 209 | static int wdt_gpio_state; |
| 210 | |
| 211 | void 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 | |
| 220 | void 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 | |
| 228 | void 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 | |
| 237 | void voiceblue_reset(void) |
| 238 | { |
| 239 | set_bit(MACHINE_REBOOT, &machine_state); |
| 240 | voiceblue_wdt_enable(); |
| 241 | while (1) ; |
| 242 | } |
| 243 | |
| 244 | EXPORT_SYMBOL(voiceblue_wdt_enable); |
| 245 | EXPORT_SYMBOL(voiceblue_wdt_disable); |
| 246 | EXPORT_SYMBOL(voiceblue_wdt_ping); |
| 247 | |
| 248 | MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910") |
| 249 | /* Maintainer: Ladislav Michl <michl@2n.cz> */ |
| 250 | .phys_ram = 0x10000000, |
| 251 | .phys_io = 0xfff00000, |
| 252 | .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc, |
| 253 | .boot_params = 0x10000100, |
| 254 | .map_io = voiceblue_map_io, |
| 255 | .init_irq = voiceblue_init_irq, |
| 256 | .init_machine = voiceblue_init, |
| 257 | .timer = &omap_timer, |
| 258 | MACHINE_END |