Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
[linux-2.6] / arch / arm / mach-omap1 / board-voiceblue.c
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