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1da177e4 LT |
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 | 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, | |
256 | MACHINE_END |