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/gpio.h>
17 #include <linux/platform_device.h>
18 #include <linux/interrupt.h>
19 #include <linux/irq.h>
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/mtd/physmap.h>
23 #include <linux/notifier.h>
24 #include <linux/reboot.h>
25 #include <linux/serial_8250.h>
26 #include <linux/serial_reg.h>
27 #include <linux/smc91x.h>
28 #include <linux/export.h>
29
30 #include <mach/hardware.h>
31 #include <asm/mach-types.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/map.h>
34
35 #include <plat/board-voiceblue.h>
36 #include "common.h"
37 #include <plat/flash.h>
38 #include <plat/mux.h>
39 #include <plat/tc.h>
40 #include <plat/usb.h>
41
42 static struct plat_serial8250_port voiceblue_ports[] = {
43 {
44 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
45 .irq = OMAP_GPIO_IRQ(12),
46 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
47 .iotype = UPIO_MEM,
48 .regshift = 1,
49 .uartclk = 3686400,
50 },
51 {
52 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
53 .irq = OMAP_GPIO_IRQ(13),
54 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
55 .iotype = UPIO_MEM,
56 .regshift = 1,
57 .uartclk = 3686400,
58 },
59 {
60 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
61 .irq = OMAP_GPIO_IRQ(14),
62 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
63 .iotype = UPIO_MEM,
64 .regshift = 1,
65 .uartclk = 3686400,
66 },
67 {
68 .mapbase = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
69 .irq = OMAP_GPIO_IRQ(15),
70 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
71 .iotype = UPIO_MEM,
72 .regshift = 1,
73 .uartclk = 3686400,
74 },
75 { },
76 };
77
78 static struct platform_device serial_device = {
79 .name = "serial8250",
80 .id = PLAT8250_DEV_PLATFORM1,
81 .dev = {
82 .platform_data = voiceblue_ports,
83 },
84 };
85
ext_uart_init(void)86 static int __init ext_uart_init(void)
87 {
88 if (!machine_is_voiceblue())
89 return -ENODEV;
90
91 return platform_device_register(&serial_device);
92 }
93 arch_initcall(ext_uart_init);
94
95 static struct physmap_flash_data voiceblue_flash_data = {
96 .width = 2,
97 .set_vpp = omap1_set_vpp,
98 };
99
100 static struct resource voiceblue_flash_resource = {
101 .start = OMAP_CS0_PHYS,
102 .end = OMAP_CS0_PHYS + SZ_32M - 1,
103 .flags = IORESOURCE_MEM,
104 };
105
106 static struct platform_device voiceblue_flash_device = {
107 .name = "physmap-flash",
108 .id = 0,
109 .dev = {
110 .platform_data = &voiceblue_flash_data,
111 },
112 .num_resources = 1,
113 .resource = &voiceblue_flash_resource,
114 };
115
116 static struct smc91x_platdata voiceblue_smc91x_info = {
117 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
118 .leda = RPC_LED_100_10,
119 .ledb = RPC_LED_TX_RX,
120 };
121
122 static struct resource voiceblue_smc91x_resources[] = {
123 [0] = {
124 .start = OMAP_CS2_PHYS + 0x300,
125 .end = OMAP_CS2_PHYS + 0x300 + 16,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = OMAP_GPIO_IRQ(8),
130 .end = OMAP_GPIO_IRQ(8),
131 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
132 },
133 };
134
135 static struct platform_device voiceblue_smc91x_device = {
136 .name = "smc91x",
137 .id = 0,
138 .dev = {
139 .platform_data = &voiceblue_smc91x_info,
140 },
141 .num_resources = ARRAY_SIZE(voiceblue_smc91x_resources),
142 .resource = voiceblue_smc91x_resources,
143 };
144
145 static struct platform_device *voiceblue_devices[] __initdata = {
146 &voiceblue_flash_device,
147 &voiceblue_smc91x_device,
148 };
149
150 static struct omap_usb_config voiceblue_usb_config __initdata = {
151 .hmc_mode = 3,
152 .register_host = 1,
153 .register_dev = 1,
154 .pins[0] = 2,
155 .pins[1] = 6,
156 .pins[2] = 6,
157 };
158
159 static struct omap_board_config_kernel voiceblue_config[] = {
160 };
161
162 #define MACHINE_PANICED 1
163 #define MACHINE_REBOOTING 2
164 #define MACHINE_REBOOT 4
165 static unsigned long machine_state;
166
panic_event(struct notifier_block * this,unsigned long event,void * ptr)167 static int panic_event(struct notifier_block *this, unsigned long event,
168 void *ptr)
169 {
170 if (test_and_set_bit(MACHINE_PANICED, &machine_state))
171 return NOTIFY_DONE;
172
173 /* Flash power LED */
174 omap_writeb(0x78, OMAP_LPG1_LCR);
175 omap_writeb(0x01, OMAP_LPG1_PMR); /* Enable clock */
176
177 return NOTIFY_DONE;
178 }
179
180 static struct notifier_block panic_block = {
181 .notifier_call = panic_event,
182 };
183
voiceblue_setup(void)184 static int __init voiceblue_setup(void)
185 {
186 if (!machine_is_voiceblue())
187 return -ENODEV;
188
189 /* Setup panic notifier */
190 atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
191
192 return 0;
193 }
194 postcore_initcall(voiceblue_setup);
195
196 static int wdt_gpio_state;
197
voiceblue_wdt_enable(void)198 void voiceblue_wdt_enable(void)
199 {
200 gpio_direction_output(0, 0);
201 gpio_set_value(0, 1);
202 gpio_set_value(0, 0);
203 wdt_gpio_state = 0;
204 }
205
voiceblue_wdt_disable(void)206 void voiceblue_wdt_disable(void)
207 {
208 gpio_set_value(0, 0);
209 gpio_set_value(0, 1);
210 gpio_set_value(0, 0);
211 gpio_direction_input(0);
212 }
213
voiceblue_wdt_ping(void)214 void voiceblue_wdt_ping(void)
215 {
216 if (test_bit(MACHINE_REBOOT, &machine_state))
217 return;
218
219 wdt_gpio_state = !wdt_gpio_state;
220 gpio_set_value(0, wdt_gpio_state);
221 }
222
voiceblue_restart(char mode,const char * cmd)223 static void voiceblue_restart(char mode, const char *cmd)
224 {
225 /*
226 * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
227 * "Global Software Reset Affects Traffic Controller Frequency".
228 */
229 if (cpu_is_omap5912()) {
230 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
231 omap_writew(0x8, ARM_RSTCT1);
232 }
233
234 set_bit(MACHINE_REBOOT, &machine_state);
235 voiceblue_wdt_enable();
236 while (1) ;
237 }
238
239 EXPORT_SYMBOL(voiceblue_wdt_enable);
240 EXPORT_SYMBOL(voiceblue_wdt_disable);
241 EXPORT_SYMBOL(voiceblue_wdt_ping);
242
voiceblue_init(void)243 static void __init voiceblue_init(void)
244 {
245 /* mux pins for uarts */
246 omap_cfg_reg(UART1_TX);
247 omap_cfg_reg(UART1_RTS);
248 omap_cfg_reg(UART2_TX);
249 omap_cfg_reg(UART2_RTS);
250 omap_cfg_reg(UART3_TX);
251 omap_cfg_reg(UART3_RX);
252
253 /* Watchdog */
254 gpio_request(0, "Watchdog");
255 /* smc91x reset */
256 gpio_request(7, "SMC91x reset");
257 gpio_direction_output(7, 1);
258 udelay(2); /* wait at least 100ns */
259 gpio_set_value(7, 0);
260 mdelay(50); /* 50ms until PHY ready */
261 /* smc91x interrupt pin */
262 gpio_request(8, "SMC91x irq");
263 /* 16C554 reset*/
264 gpio_request(6, "16C554 reset");
265 gpio_direction_output(6, 0);
266 /* 16C554 interrupt pins */
267 gpio_request(12, "16C554 irq");
268 gpio_request(13, "16C554 irq");
269 gpio_request(14, "16C554 irq");
270 gpio_request(15, "16C554 irq");
271 irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
272 irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
273 irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
274 irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
275
276 platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
277 omap_board_config = voiceblue_config;
278 omap_board_config_size = ARRAY_SIZE(voiceblue_config);
279 omap_serial_init();
280 omap1_usb_init(&voiceblue_usb_config);
281 omap_register_i2c_bus(1, 100, NULL, 0);
282
283 /* There is a good chance board is going up, so enable power LED
284 * (it is connected through invertor) */
285 omap_writeb(0x00, OMAP_LPG1_LCR);
286 omap_writeb(0x00, OMAP_LPG1_PMR); /* Disable clock */
287 }
288
289 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
290 /* Maintainer: Ladislav Michl <michl@2n.cz> */
291 .atag_offset = 0x100,
292 .map_io = omap15xx_map_io,
293 .init_early = omap1_init_early,
294 .reserve = omap_reserve,
295 .init_irq = omap1_init_irq,
296 .init_machine = voiceblue_init,
297 .timer = &omap1_timer,
298 .restart = voiceblue_restart,
299 MACHINE_END
300