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/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/flash.h>
29 #include <asm/mach/map.h>
30
31 #include <asm/arch/common.h>
32 #include <asm/arch/gpio.h>
33 #include <asm/arch/mux.h>
34 #include <asm/arch/tc.h>
35 #include <asm/arch/usb.h>
36
37 static struct plat_serial8250_port voiceblue_ports[] = {
38 {
39 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
40 .irq = OMAP_GPIO_IRQ(12),
41 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
42 .iotype = UPIO_MEM,
43 .regshift = 1,
44 .uartclk = 3686400,
45 },
46 {
47 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
48 .irq = OMAP_GPIO_IRQ(13),
49 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
50 .iotype = UPIO_MEM,
51 .regshift = 1,
52 .uartclk = 3686400,
53 },
54 {
55 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
56 .irq = OMAP_GPIO_IRQ(14),
57 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
58 .iotype = UPIO_MEM,
59 .regshift = 1,
60 .uartclk = 3686400,
61 },
62 {
63 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
64 .irq = OMAP_GPIO_IRQ(15),
65 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
66 .iotype = UPIO_MEM,
67 .regshift = 1,
68 .uartclk = 3686400,
69 },
70 { },
71 };
72
73 static struct platform_device serial_device = {
74 .name = "serial8250",
75 .id = PLAT8250_DEV_PLATFORM1,
76 .dev = {
77 .platform_data = voiceblue_ports,
78 },
79 };
80
81 static int __init ext_uart_init(void)
82 {
83 return platform_device_register(&serial_device);
84 }
85 arch_initcall(ext_uart_init);
86
87 static struct flash_platform_data voiceblue_flash_data = {
88 .map_name = "cfi_probe",
89 .width = 2,
90 };
91
92 static struct resource voiceblue_flash_resource = {
93 .start = OMAP_CS0_PHYS,
94 .end = OMAP_CS0_PHYS + SZ_32M - 1,
95 .flags = IORESOURCE_MEM,
96 };
97
98 static struct platform_device voiceblue_flash_device = {
99 .name = "omapflash",
100 .id = 0,
101 .dev = {
102 .platform_data = &voiceblue_flash_data,
103 },
104 .num_resources = 1,
105 .resource = &voiceblue_flash_resource,
106 };
107
108 static struct resource voiceblue_smc91x_resources[] = {
109 [0] = {
110 .start = OMAP_CS2_PHYS + 0x300,
111 .end = OMAP_CS2_PHYS + 0x300 + 16,
112 .flags = IORESOURCE_MEM,
113 },
114 [1] = {
115 .start = OMAP_GPIO_IRQ(8),
116 .end = OMAP_GPIO_IRQ(8),
117 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
118 },
119 };
120
121 static struct platform_device voiceblue_smc91x_device = {
122 .name = "smc91x",
123 .id = 0,
124 .num_resources = ARRAY_SIZE(voiceblue_smc91x_resources),
125 .resource = voiceblue_smc91x_resources,
126 };
127
128 static struct platform_device *voiceblue_devices[] __initdata = {
129 &voiceblue_flash_device,
130 &voiceblue_smc91x_device,
131 };
132
133 static struct omap_usb_config voiceblue_usb_config __initdata = {
134 .hmc_mode = 3,
135 .register_host = 1,
136 .register_dev = 1,
137 .pins[0] = 2,
138 .pins[1] = 6,
139 .pins[2] = 6,
140 };
141
142 static struct omap_mmc_config voiceblue_mmc_config __initdata = {
143 .mmc[0] = {
144 .enabled = 1,
145 .power_pin = 2,
146 .switch_pin = -1,
147 },
148 };
149
150 static struct omap_uart_config voiceblue_uart_config __initdata = {
151 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
152 };
153
154 static struct omap_board_config_kernel voiceblue_config[] = {
155 { OMAP_TAG_USB, &voiceblue_usb_config },
156 { OMAP_TAG_MMC, &voiceblue_mmc_config },
157 { OMAP_TAG_UART, &voiceblue_uart_config },
158 };
159
160 static void __init voiceblue_init_irq(void)
161 {
162 omap1_init_common_hw();
163 omap_init_irq();
164 omap_gpio_init();
165 }
166
167 static void __init voiceblue_init(void)
168 {
169 /* Watchdog */
170 omap_request_gpio(0);
171 /* smc91x reset */
172 omap_request_gpio(7);
173 omap_set_gpio_direction(7, 0);
174 omap_set_gpio_dataout(7, 1);
175 udelay(2); /* wait at least 100ns */
176 omap_set_gpio_dataout(7, 0);
177 mdelay(50); /* 50ms until PHY ready */
178 /* smc91x interrupt pin */
179 omap_request_gpio(8);
180 /* 16C554 reset*/
181 omap_request_gpio(6);
182 omap_set_gpio_direction(6, 0);
183 omap_set_gpio_dataout(6, 0);
184 /* 16C554 interrupt pins */
185 omap_request_gpio(12);
186 omap_request_gpio(13);
187 omap_request_gpio(14);
188 omap_request_gpio(15);
189 set_irq_type(OMAP_GPIO_IRQ(12), IRQT_RISING);
190 set_irq_type(OMAP_GPIO_IRQ(13), IRQT_RISING);
191 set_irq_type(OMAP_GPIO_IRQ(14), IRQT_RISING);
192 set_irq_type(OMAP_GPIO_IRQ(15), IRQT_RISING);
193
194 platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
195 omap_board_config = voiceblue_config;
196 omap_board_config_size = ARRAY_SIZE(voiceblue_config);
197 omap_serial_init();
198 omap_register_i2c_bus(1, 100, NULL, 0);
199
200 /* There is a good chance board is going up, so enable power LED
201 * (it is connected through invertor) */
202 omap_writeb(0x00, OMAP_LPG1_LCR);
203 omap_writeb(0x00, OMAP_LPG1_PMR); /* Disable clock */
204 }
205
206 static void __init voiceblue_map_io(void)
207 {
208 omap1_map_common_io();
209 }
210
211 #define MACHINE_PANICED 1
212 #define MACHINE_REBOOTING 2
213 #define MACHINE_REBOOT 4
214 static unsigned long machine_state;
215
216 static int panic_event(struct notifier_block *this, unsigned long event,
217 void *ptr)
218 {
219 if (test_and_set_bit(MACHINE_PANICED, &machine_state))
220 return NOTIFY_DONE;
221
222 /* Flash power LED */
223 omap_writeb(0x78, OMAP_LPG1_LCR);
224 omap_writeb(0x01, OMAP_LPG1_PMR); /* Enable clock */
225
226 return NOTIFY_DONE;
227 }
228
229 static struct notifier_block panic_block = {
230 .notifier_call = panic_event,
231 };
232
233 static int __init voiceblue_setup(void)
234 {
235 /* Setup panic notifier */
236 atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
237
238 return 0;
239 }
240 postcore_initcall(voiceblue_setup);
241
242 static int wdt_gpio_state;
243
244 void voiceblue_wdt_enable(void)
245 {
246 omap_set_gpio_direction(0, 0);
247 omap_set_gpio_dataout(0, 0);
248 omap_set_gpio_dataout(0, 1);
249 omap_set_gpio_dataout(0, 0);
250 wdt_gpio_state = 0;
251 }
252
253 void voiceblue_wdt_disable(void)
254 {
255 omap_set_gpio_dataout(0, 0);
256 omap_set_gpio_dataout(0, 1);
257 omap_set_gpio_dataout(0, 0);
258 omap_set_gpio_direction(0, 1);
259 }
260
261 void voiceblue_wdt_ping(void)
262 {
263 if (test_bit(MACHINE_REBOOT, &machine_state))
264 return;
265
266 wdt_gpio_state = !wdt_gpio_state;
267 omap_set_gpio_dataout(0, wdt_gpio_state);
268 }
269
270 void voiceblue_reset(void)
271 {
272 set_bit(MACHINE_REBOOT, &machine_state);
273 voiceblue_wdt_enable();
274 while (1) ;
275 }
276
277 EXPORT_SYMBOL(voiceblue_wdt_enable);
278 EXPORT_SYMBOL(voiceblue_wdt_disable);
279 EXPORT_SYMBOL(voiceblue_wdt_ping);
280
281 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
282 /* Maintainer: Ladislav Michl <michl@2n.cz> */
283 .phys_io = 0xfff00000,
284 .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
285 .boot_params = 0x10000100,
286 .map_io = voiceblue_map_io,
287 .init_irq = voiceblue_init_irq,
288 .init_machine = voiceblue_init,
289 .timer = &omap_timer,
290 MACHINE_END
291
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