Implement enable/reset of 3D engine
[kernel.git] / 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/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_USB,  &voiceblue_usb_config },
149         { OMAP_TAG_UART, &voiceblue_uart_config },
150 };
151
152 static void __init voiceblue_init_irq(void)
153 {
154         omap1_init_common_hw();
155         omap_init_irq();
156         omap_gpio_init();
157 }
158
159 static void __init voiceblue_init(void)
160 {
161         /* Watchdog */
162         gpio_request(0, "Watchdog");
163         /* smc91x reset */
164         gpio_request(7, "SMC91x reset");
165         gpio_direction_output(7, 1);
166         udelay(2);      /* wait at least 100ns */
167         gpio_set_value(7, 0);
168         mdelay(50);     /* 50ms until PHY ready */
169         /* smc91x interrupt pin */
170         gpio_request(8, "SMC91x irq");
171         /* 16C554 reset*/
172         gpio_request(6, "16C554 reset");
173         gpio_direction_output(6, 0);
174         /* 16C554 interrupt pins */
175         gpio_request(12, "16C554 irq");
176         gpio_request(13, "16C554 irq");
177         gpio_request(14, "16C554 irq");
178         gpio_request(15, "16C554 irq");
179         set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
180         set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
181         set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
182         set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
183
184         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
185         omap_board_config = voiceblue_config;
186         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
187         omap_serial_init();
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