2 * linux/arch/arm/mach-omap1/board-voiceblue.c
4 * Modified from board-generic.c
6 * Copyright (C) 2004 2N Telekomunikace, Ladislav Michl <michl@2n.cz>
8 * Code for OMAP5910 based VoiceBlue board (VoIP to GSM gateway).
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.
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/mtd/physmap.h>
22 #include <linux/notifier.h>
23 #include <linux/reboot.h>
24 #include <linux/serial_8250.h>
25 #include <linux/serial_reg.h>
26 #include <linux/smc91x.h>
28 #include <mach/hardware.h>
29 #include <mach/system.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
34 #include <plat/board-voiceblue.h>
35 #include <plat/common.h>
36 #include <mach/gpio.h>
37 #include <plat/flash.h>
42 static struct plat_serial8250_port voiceblue_ports
[] = {
44 .mapbase
= (unsigned long)(OMAP_CS1_PHYS
+ 0x40000),
45 .irq
= OMAP_GPIO_IRQ(12),
46 .flags
= UPF_BOOT_AUTOCONF
| UPF_IOREMAP
,
52 .mapbase
= (unsigned long)(OMAP_CS1_PHYS
+ 0x50000),
53 .irq
= OMAP_GPIO_IRQ(13),
54 .flags
= UPF_BOOT_AUTOCONF
| UPF_IOREMAP
,
60 .mapbase
= (unsigned long)(OMAP_CS1_PHYS
+ 0x60000),
61 .irq
= OMAP_GPIO_IRQ(14),
62 .flags
= UPF_BOOT_AUTOCONF
| UPF_IOREMAP
,
68 .mapbase
= (unsigned long)(OMAP_CS1_PHYS
+ 0x70000),
69 .irq
= OMAP_GPIO_IRQ(15),
70 .flags
= UPF_BOOT_AUTOCONF
| UPF_IOREMAP
,
78 static struct platform_device serial_device
= {
80 .id
= PLAT8250_DEV_PLATFORM1
,
82 .platform_data
= voiceblue_ports
,
86 static int __init
ext_uart_init(void)
88 if (!machine_is_voiceblue())
91 return platform_device_register(&serial_device
);
93 arch_initcall(ext_uart_init
);
95 static struct physmap_flash_data voiceblue_flash_data
= {
97 .set_vpp
= omap1_set_vpp
,
100 static struct resource voiceblue_flash_resource
= {
101 .start
= OMAP_CS0_PHYS
,
102 .end
= OMAP_CS0_PHYS
+ SZ_32M
- 1,
103 .flags
= IORESOURCE_MEM
,
106 static struct platform_device voiceblue_flash_device
= {
107 .name
= "physmap-flash",
110 .platform_data
= &voiceblue_flash_data
,
113 .resource
= &voiceblue_flash_resource
,
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
,
122 static struct resource voiceblue_smc91x_resources
[] = {
124 .start
= OMAP_CS2_PHYS
+ 0x300,
125 .end
= OMAP_CS2_PHYS
+ 0x300 + 16,
126 .flags
= IORESOURCE_MEM
,
129 .start
= OMAP_GPIO_IRQ(8),
130 .end
= OMAP_GPIO_IRQ(8),
131 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHEDGE
,
135 static struct platform_device voiceblue_smc91x_device
= {
139 .platform_data
= &voiceblue_smc91x_info
,
141 .num_resources
= ARRAY_SIZE(voiceblue_smc91x_resources
),
142 .resource
= voiceblue_smc91x_resources
,
145 static struct platform_device
*voiceblue_devices
[] __initdata
= {
146 &voiceblue_flash_device
,
147 &voiceblue_smc91x_device
,
150 static struct omap_usb_config voiceblue_usb_config __initdata
= {
159 static struct omap_board_config_kernel voiceblue_config
[] = {
162 static void __init
voiceblue_init_irq(void)
164 omap1_init_common_hw();
168 static void __init
voiceblue_map_io(void)
170 omap1_map_common_io();
173 #define MACHINE_PANICED 1
174 #define MACHINE_REBOOTING 2
175 #define MACHINE_REBOOT 4
176 static unsigned long machine_state
;
178 static int panic_event(struct notifier_block
*this, unsigned long event
,
181 if (test_and_set_bit(MACHINE_PANICED
, &machine_state
))
184 /* Flash power LED */
185 omap_writeb(0x78, OMAP_LPG1_LCR
);
186 omap_writeb(0x01, OMAP_LPG1_PMR
); /* Enable clock */
191 static struct notifier_block panic_block
= {
192 .notifier_call
= panic_event
,
195 static int __init
voiceblue_setup(void)
197 if (!machine_is_voiceblue())
200 /* Setup panic notifier */
201 atomic_notifier_chain_register(&panic_notifier_list
, &panic_block
);
205 postcore_initcall(voiceblue_setup
);
207 static int wdt_gpio_state
;
209 void voiceblue_wdt_enable(void)
211 gpio_direction_output(0, 0);
212 gpio_set_value(0, 1);
213 gpio_set_value(0, 0);
217 void voiceblue_wdt_disable(void)
219 gpio_set_value(0, 0);
220 gpio_set_value(0, 1);
221 gpio_set_value(0, 0);
222 gpio_direction_input(0);
225 void voiceblue_wdt_ping(void)
227 if (test_bit(MACHINE_REBOOT
, &machine_state
))
230 wdt_gpio_state
= !wdt_gpio_state
;
231 gpio_set_value(0, wdt_gpio_state
);
234 static void voiceblue_reset(char mode
, const char *cmd
)
237 * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
238 * "Global Software Reset Affects Traffic Controller Frequency".
240 if (cpu_is_omap5912()) {
241 omap_writew(omap_readw(DPLL_CTL
) & ~(1 << 4), DPLL_CTL
);
242 omap_writew(0x8, ARM_RSTCT1
);
245 set_bit(MACHINE_REBOOT
, &machine_state
);
246 voiceblue_wdt_enable();
250 EXPORT_SYMBOL(voiceblue_wdt_enable
);
251 EXPORT_SYMBOL(voiceblue_wdt_disable
);
252 EXPORT_SYMBOL(voiceblue_wdt_ping
);
254 static void __init
voiceblue_init(void)
256 /* mux pins for uarts */
257 omap_cfg_reg(UART1_TX
);
258 omap_cfg_reg(UART1_RTS
);
259 omap_cfg_reg(UART2_TX
);
260 omap_cfg_reg(UART2_RTS
);
261 omap_cfg_reg(UART3_TX
);
262 omap_cfg_reg(UART3_RX
);
265 gpio_request(0, "Watchdog");
267 gpio_request(7, "SMC91x reset");
268 gpio_direction_output(7, 1);
269 udelay(2); /* wait at least 100ns */
270 gpio_set_value(7, 0);
271 mdelay(50); /* 50ms until PHY ready */
272 /* smc91x interrupt pin */
273 gpio_request(8, "SMC91x irq");
275 gpio_request(6, "16C554 reset");
276 gpio_direction_output(6, 0);
277 /* 16C554 interrupt pins */
278 gpio_request(12, "16C554 irq");
279 gpio_request(13, "16C554 irq");
280 gpio_request(14, "16C554 irq");
281 gpio_request(15, "16C554 irq");
282 irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING
);
283 irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING
);
284 irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING
);
285 irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING
);
287 platform_add_devices(voiceblue_devices
, ARRAY_SIZE(voiceblue_devices
));
288 omap_board_config
= voiceblue_config
;
289 omap_board_config_size
= ARRAY_SIZE(voiceblue_config
);
291 omap1_usb_init(&voiceblue_usb_config
);
292 omap_register_i2c_bus(1, 100, NULL
, 0);
294 /* There is a good chance board is going up, so enable power LED
295 * (it is connected through invertor) */
296 omap_writeb(0x00, OMAP_LPG1_LCR
);
297 omap_writeb(0x00, OMAP_LPG1_PMR
); /* Disable clock */
299 arch_reset
= voiceblue_reset
;
302 MACHINE_START(VOICEBLUE
, "VoiceBlue OMAP5910")
303 /* Maintainer: Ladislav Michl <michl@2n.cz> */
304 .boot_params
= 0x10000100,
305 .map_io
= voiceblue_map_io
,
306 .reserve
= omap_reserve
,
307 .init_irq
= voiceblue_init_irq
,
308 .init_machine
= voiceblue_init
,
309 .timer
= &omap1_timer
,