1 /*
2 * Support for Compaq iPAQ H3100 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 <video/sa1100fb.h>
18
19 #include <asm/mach-types.h>
20 #include <asm/mach/arch.h>
21 #include <asm/mach/irda.h>
22
23 #include <mach/h3xxx.h>
24 #include <mach/irqs.h>
25
26 #include "generic.h"
27
28 /*
29 * helper for sa1100fb
30 */
31 static struct gpio h3100_lcd_gpio[] = {
32 { H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
33 { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
34 };
35
h3100_lcd_request(void)36 static bool h3100_lcd_request(void)
37 {
38 static bool h3100_lcd_ok;
39 int rc;
40
41 if (h3100_lcd_ok)
42 return true;
43
44 rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
45 if (rc)
46 pr_err("%s: can't request GPIOs\n", __func__);
47 else
48 h3100_lcd_ok = true;
49
50 return h3100_lcd_ok;
51 }
52
h3100_lcd_power(int enable)53 static void h3100_lcd_power(int enable)
54 {
55 if (!h3100_lcd_request())
56 return;
57
58 gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
59 gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
60 }
61
62 static struct sa1100fb_mach_info h3100_lcd_info = {
63 .pixclock = 406977, .bpp = 4,
64 .xres = 320, .yres = 240,
65
66 .hsync_len = 26, .vsync_len = 41,
67 .left_margin = 4, .upper_margin = 0,
68 .right_margin = 4, .lower_margin = 0,
69
70 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
71 .cmap_greyscale = 1,
72 .cmap_inverse = 1,
73
74 .lccr0 = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
75 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
76
77 .lcd_power = h3100_lcd_power,
78 };
79
h3100_map_io(void)80 static void __init h3100_map_io(void)
81 {
82 h3xxx_map_io();
83
84 /* Older bootldrs put GPIO2-9 in alternate mode on the
85 assumption that they are used for video */
86 GAFR &= ~0x000001fb;
87 }
88
89 /*
90 * This turns the IRDA power on or off on the Compaq H3100
91 */
92 static struct gpio h3100_irda_gpio[] = {
93 { H3100_GPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
94 { H3100_GPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
95 };
96
h3100_irda_set_power(struct device * dev,unsigned int state)97 static int h3100_irda_set_power(struct device *dev, unsigned int state)
98 {
99 gpio_set_value(H3100_GPIO_IR_ON, state);
100 return 0;
101 }
102
h3100_irda_set_speed(struct device * dev,unsigned int speed)103 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
104 {
105 gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
106 }
107
h3100_irda_startup(struct device * dev)108 static int h3100_irda_startup(struct device *dev)
109 {
110 return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
111 }
112
h3100_irda_shutdown(struct device * dev)113 static void h3100_irda_shutdown(struct device *dev)
114 {
115 return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
116 }
117
118 static struct irda_platform_data h3100_irda_data = {
119 .set_power = h3100_irda_set_power,
120 .set_speed = h3100_irda_set_speed,
121 .startup = h3100_irda_startup,
122 .shutdown = h3100_irda_shutdown,
123 };
124
h3100_mach_init(void)125 static void __init h3100_mach_init(void)
126 {
127 h3xxx_mach_init();
128
129 sa11x0_register_lcd(&h3100_lcd_info);
130 sa11x0_register_irda(&h3100_irda_data);
131 }
132
133 MACHINE_START(H3100, "Compaq iPAQ H3100")
134 .atag_offset = 0x100,
135 .map_io = h3100_map_io,
136 .nr_irqs = SA1100_NR_IRQS,
137 .init_irq = sa1100_init_irq,
138 .init_time = sa1100_timer_init,
139 .init_machine = h3100_mach_init,
140 .init_late = sa11x0_init_late,
141 .restart = sa11x0_restart,
142 MACHINE_END
143
144