xref: /openbmc/linux/arch/arm/mach-sa1100/h3600.c (revision b6dcefde)
1 /*
2  * Support for Compaq iPAQ H3600 handheld computer
3  *
4  * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
5  * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  */
12 
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/gpio.h>
16 
17 #include <asm/mach-types.h>
18 #include <asm/mach/arch.h>
19 #include <asm/mach/irda.h>
20 
21 #include <mach/h3xxx.h>
22 
23 #include "generic.h"
24 
25 /*
26  * helper for sa1100fb
27  */
28 static void h3600_lcd_power(int enable)
29 {
30 	if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
31 		pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
32 		goto err1;
33 	}
34 	if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
35 		pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
36 		goto err2;
37 	}
38 	if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
39 		pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
40 		goto err3;
41 	}
42 	if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
43 		pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
44 		goto err4;
45 	}
46 
47 	gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
48 	gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
49 	gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
50 	gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
51 
52 	gpio_free(H3600_EGPIO_LVDD_ON);
53 err4:	gpio_free(H3600_EGPIO_LCD_5V_ON);
54 err3:	gpio_free(H3600_EGPIO_LCD_PCI);
55 err2:	gpio_free(H3XXX_EGPIO_LCD_ON);
56 err1:	return;
57 }
58 
59 static void __init h3600_map_io(void)
60 {
61 	h3xxx_map_io();
62 
63 	sa1100fb_lcd_power = h3600_lcd_power;
64 }
65 
66 /*
67  * This turns the IRDA power on or off on the Compaq H3600
68  */
69 static int h3600_irda_set_power(struct device *dev, unsigned int state)
70 {
71 	gpio_set_value(H3600_EGPIO_IR_ON, state);
72 	return 0;
73 }
74 
75 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
76 {
77 	gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
78 }
79 
80 static int h3600_irda_startup(struct device *dev)
81 {
82 	int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
83 	if (err)
84 		goto err1;
85 	err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
86 	if (err)
87 		goto err2;
88 	err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
89 	if (err)
90 		goto err2;
91 	err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
92 	if (err)
93 		goto err3;
94 	return 0;
95 
96 err3:	gpio_free(H3600_EGPIO_IR_FSEL);
97 err2:	gpio_free(H3600_EGPIO_IR_ON);
98 err1:	return err;
99 }
100 
101 static void h3600_irda_shutdown(struct device *dev)
102 {
103 	gpio_free(H3600_EGPIO_IR_ON);
104 	gpio_free(H3600_EGPIO_IR_FSEL);
105 }
106 
107 static struct irda_platform_data h3600_irda_data = {
108 	.set_power	= h3600_irda_set_power,
109 	.set_speed	= h3600_irda_set_speed,
110 	.startup	= h3600_irda_startup,
111 	.shutdown	= h3600_irda_shutdown,
112 };
113 
114 static struct gpio_default_state h3600_default_gpio[] = {
115 	{ H3XXX_GPIO_COM_DCD,	GPIO_MODE_IN,	"COM DCD" },
116 	{ H3XXX_GPIO_COM_CTS,	GPIO_MODE_IN,	"COM CTS" },
117 	{ H3XXX_GPIO_COM_RTS,	GPIO_MODE_OUT0,	"COM RTS" },
118 };
119 
120 static void __init h3600_mach_init(void)
121 {
122 	h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
123 	h3xxx_mach_init();
124 	sa11x0_register_irda(&h3600_irda_data);
125 }
126 
127 MACHINE_START(H3600, "Compaq iPAQ H3600")
128 	.phys_io	= 0x80000000,
129 	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
130 	.boot_params	= 0xc0000100,
131 	.map_io		= h3600_map_io,
132 	.init_irq	= sa1100_init_irq,
133 	.timer		= &sa1100_timer,
134 	.init_machine	= h3600_mach_init,
135 MACHINE_END
136 
137