1 /*
2 * linux/arch/arm/mach-omap1/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/platform_device.h>
17 #include <linux/interrupt.h>
18 #include <linux/irq.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/notifier.h>
22 #include <linux/reboot.h>
23 #include <linux/serial_8250.h>
24 #include <linux/serial_reg.h>
25
26 #include <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/flash.h>
30 #include <asm/mach/map.h>
31
32 #include <mach/common.h>
33 #include <mach/gpio.h>
34 #include <mach/mux.h>
35 #include <mach/tc.h>
36 #include <mach/usb.h>
37
38 static struct plat_serial8250_port voiceblue_ports[] = {
39 {
40 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
41 .irq = OMAP_GPIO_IRQ(12),
42 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
43 .iotype = UPIO_MEM,
44 .regshift = 1,
45 .uartclk = 3686400,
46 },
47 {
48 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
49 .irq = OMAP_GPIO_IRQ(13),
50 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
51 .iotype = UPIO_MEM,
52 .regshift = 1,
53 .uartclk = 3686400,
54 },
55 {
56 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
57 .irq = OMAP_GPIO_IRQ(14),
58 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
59 .iotype = UPIO_MEM,
60 .regshift = 1,
61 .uartclk = 3686400,
62 },
63 {
64 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
65 .irq = OMAP_GPIO_IRQ(15),
66 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
67 .iotype = UPIO_MEM,
68 .regshift = 1,
69 .uartclk = 3686400,
70 },
71 { },
72 };
73
74 static struct platform_device serial_device = {
75 .name = "serial8250",
76 .id = PLAT8250_DEV_PLATFORM1,
77 .dev = {
78 .platform_data = voiceblue_ports,
79 },
80 };
81
82 static int __init ext_uart_init(void)
83 {
84 return platform_device_register(&serial_device);
85 }
86 arch_initcall(ext_uart_init);
87
88 static struct flash_platform_data voiceblue_flash_data = {
89 .map_name = "cfi_probe",
90 .width = 2,
91 };
92
93 static struct resource voiceblue_flash_resource = {
94 .start = OMAP_CS0_PHYS,
95 .end = OMAP_CS0_PHYS + SZ_32M - 1,
96 .flags = IORESOURCE_MEM,
97 };
98
99 static struct platform_device voiceblue_flash_device = {
100 .name = "omapflash",
101 .id = 0,
102 .dev = {
103 .platform_data = &voiceblue_flash_data,
104 },
105 .num_resources = 1,
106 .resource = &voiceblue_flash_resource,
107 };
108
109 static struct resource voiceblue_smc91x_resources[] = {
110 [0] = {
111 .start = OMAP_CS2_PHYS + 0x300,
112 .end = OMAP_CS2_PHYS + 0x300 + 16,
113 .flags = IORESOURCE_MEM,
114 },
115 [1] = {
116 .start = OMAP_GPIO_IRQ(8),
117 .end = OMAP_GPIO_IRQ(8),
118 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
119 },
120 };
121
122 static struct platform_device voiceblue_smc91x_device = {
123 .name = "smc91x",
124 .id = 0,
125 .num_resources = ARRAY_SIZE(voiceblue_smc91x_resources),
126 .resource = voiceblue_smc91x_resources,
127 };
128
129 static struct platform_device *voiceblue_devices[] __initdata = {
130 &voiceblue_flash_device,
131 &voiceblue_smc91x_device,
132 };
133
134 static struct omap_usb_config voiceblue_usb_config __initdata = {
135 .hmc_mode = 3,
136 .register_host = 1,
137 .register_dev = 1,
138 .pins[0] = 2,
139 .pins[1] = 6,
140 .pins[2] = 6,
141 };
142
143 static struct omap_uart_config voiceblue_uart_config __initdata = {
144 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
145 };
146
147 static struct omap_board_config_kernel voiceblue_config[] = {
148 { OMAP_TAG_UART, &voiceblue_uart_config },
149 };
150
151 static void __init voiceblue_init_irq(void)
152 {
153 omap1_init_common_hw();
154 omap_init_irq();
155 omap_gpio_init();
156 }
157
158 static void __init voiceblue_init(void)
159 {
160 /* Watchdog */
161 gpio_request(0, "Watchdog");
162 /* smc91x reset */
163 gpio_request(7, "SMC91x reset");
164 gpio_direction_output(7, 1);
165 udelay(2); /* wait at least 100ns */
166 gpio_set_value(7, 0);
167 mdelay(50); /* 50ms until PHY ready */
168 /* smc91x interrupt pin */
169 gpio_request(8, "SMC91x irq");
170 /* 16C554 reset*/
171 gpio_request(6, "16C554 reset");
172 gpio_direction_output(6, 0);
173 /* 16C554 interrupt pins */
174 gpio_request(12, "16C554 irq");
175 gpio_request(13, "16C554 irq");
176 gpio_request(14, "16C554 irq");
177 gpio_request(15, "16C554 irq");
178 set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
179 set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
180 set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
181 set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
182
183 platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
184 omap_board_config = voiceblue_config;
185 omap_board_config_size = ARRAY_SIZE(voiceblue_config);
186 omap_serial_init();
187 omap_usb_init(&voiceblue_usb_config);
188 omap_register_i2c_bus(1, 100, NULL, 0);
189
190 /* There is a good chance board is going up, so enable power LED
191 * (it is connected through invertor) */
192 omap_writeb(0x00, OMAP_LPG1_LCR);
193 omap_writeb(0x00, OMAP_LPG1_PMR); /* Disable clock */
194 }
195
196 static void __init voiceblue_map_io(void)
197 {
198 omap1_map_common_io();
199 }
200
201 #define MACHINE_PANICED 1
202 #define MACHINE_REBOOTING 2
203 #define MACHINE_REBOOT 4
204 static unsigned long machine_state;
205
206 static int panic_event(struct notifier_block *this, unsigned long event,
207 void *ptr)
208 {
209 if (test_and_set_bit(MACHINE_PANICED, &machine_state))
210 return NOTIFY_DONE;
211
212 /* Flash power LED */
213 omap_writeb(0x78, OMAP_LPG1_LCR);
214 omap_writeb(0x01, OMAP_LPG1_PMR); /* Enable clock */
215
216 return NOTIFY_DONE;
217 }
218
219 static struct notifier_block panic_block = {
220 .notifier_call = panic_event,
221 };
222
223 static int __init voiceblue_setup(void)
224 {
225 /* Setup panic notifier */
226 atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
227
228 return 0;
229 }
230 postcore_initcall(voiceblue_setup);
231
232 static int wdt_gpio_state;
233
234 void voiceblue_wdt_enable(void)
235 {
236 gpio_direction_output(0, 0);
237 gpio_set_value(0, 1);
238 gpio_set_value(0, 0);
239 wdt_gpio_state = 0;
240 }
241
242 void voiceblue_wdt_disable(void)
243 {
244 gpio_set_value(0, 0);
245 gpio_set_value(0, 1);
246 gpio_set_value(0, 0);
247 gpio_direction_input(0);
248 }
249
250 void voiceblue_wdt_ping(void)
251 {
252 if (test_bit(MACHINE_REBOOT, &machine_state))
253 return;
254
255 wdt_gpio_state = !wdt_gpio_state;
256 gpio_set_value(0, wdt_gpio_state);
257 }
258
259 void voiceblue_reset(void)
260 {
261 set_bit(MACHINE_REBOOT, &machine_state);
262 voiceblue_wdt_enable();
263 while (1) ;
264 }
265
266 EXPORT_SYMBOL(voiceblue_wdt_enable);
267 EXPORT_SYMBOL(voiceblue_wdt_disable);
268 EXPORT_SYMBOL(voiceblue_wdt_ping);
269
270 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
271 /* Maintainer: Ladislav Michl <michl@2n.cz> */
272 .phys_io = 0xfff00000,
273 .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
274 .boot_params = 0x10000100,
275 .map_io = voiceblue_map_io,
276 .init_irq = voiceblue_init_irq,
277 .init_machine = voiceblue_init,
278 .timer = &omap_timer,
279 MACHINE_END
280
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