1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Support for Compaq iPAQ H3600 handheld computer
4 *
5 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
6 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
7 */
8
9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <linux/gpio.h>
12
13#include <video/sa1100fb.h>
14
15#include <asm/mach-types.h>
16#include <asm/mach/arch.h>
17
18#include <mach/h3xxx.h>
19#include <mach/irqs.h>
20
21#include "generic.h"
22
23static bool h3600_lcd_request(void)
24{
25 static bool h3600_lcd_ok;
26 int rc;
27
28 if (h3600_lcd_ok)
29 return true;
30
31 rc = gpio_request(gpio: H3XXX_EGPIO_LCD_ON, label: "LCD power");
32 if (rc)
33 goto out;
34 rc = gpio_direction_output(gpio: H3XXX_EGPIO_LCD_ON, value: 0);
35 if (rc)
36 goto out_free_on;
37 rc = gpio_request(gpio: H3600_EGPIO_LCD_PCI, label: "LCD control");
38 if (rc)
39 goto out_free_on;
40 rc = gpio_direction_output(gpio: H3600_EGPIO_LCD_PCI, value: 0);
41 if (rc)
42 goto out_free_pci;
43 rc = gpio_request(gpio: H3600_EGPIO_LCD_5V_ON, label: "LCD 5v");
44 if (rc)
45 goto out_free_pci;
46 rc = gpio_direction_output(gpio: H3600_EGPIO_LCD_5V_ON, value: 0);
47 if (rc)
48 goto out_free_5v_on;
49 rc = gpio_request(gpio: H3600_EGPIO_LVDD_ON, label: "LCD 9v/-6.5v");
50 if (rc)
51 goto out_free_5v_on;
52 rc = gpio_direction_output(gpio: H3600_EGPIO_LVDD_ON, value: 0);
53 if (rc)
54 goto out_free_lvdd_on;
55
56 goto out;
57
58out_free_lvdd_on:
59 gpio_free(gpio: H3600_EGPIO_LVDD_ON);
60out_free_5v_on:
61 gpio_free(gpio: H3600_EGPIO_LCD_5V_ON);
62out_free_pci:
63 gpio_free(gpio: H3600_EGPIO_LCD_PCI);
64out_free_on:
65 gpio_free(gpio: H3XXX_EGPIO_LCD_ON);
66out:
67 if (rc)
68 pr_err("%s: can't request GPIOs\n", __func__);
69 else
70 h3600_lcd_ok = true;
71
72 return h3600_lcd_ok;
73}
74
75static void h3600_lcd_power(int enable)
76{
77 if (!h3600_lcd_request())
78 return;
79
80 gpio_direction_output(gpio: H3XXX_EGPIO_LCD_ON, value: enable);
81 gpio_direction_output(gpio: H3600_EGPIO_LCD_PCI, value: enable);
82 gpio_direction_output(gpio: H3600_EGPIO_LCD_5V_ON, value: enable);
83 gpio_direction_output(gpio: H3600_EGPIO_LVDD_ON, value: enable);
84}
85
86static const struct sa1100fb_rgb h3600_rgb_16 = {
87 .red = { .offset = 12, .length = 4, },
88 .green = { .offset = 7, .length = 4, },
89 .blue = { .offset = 1, .length = 4, },
90 .transp = { .offset = 0, .length = 0, },
91};
92
93static struct sa1100fb_mach_info h3600_lcd_info = {
94 .pixclock = 174757, .bpp = 16,
95 .xres = 320, .yres = 240,
96
97 .hsync_len = 3, .vsync_len = 3,
98 .left_margin = 12, .upper_margin = 10,
99 .right_margin = 17, .lower_margin = 1,
100
101 .cmap_static = 1,
102
103 .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
104 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
105
106 .rgb[RGB_16] = &h3600_rgb_16,
107
108 .lcd_power = h3600_lcd_power,
109};
110
111
112static void __init h3600_map_io(void)
113{
114 h3xxx_map_io();
115}
116
117static void __init h3600_mach_init(void)
118{
119 h3xxx_mach_init();
120
121 sa11x0_register_lcd(inf: &h3600_lcd_info);
122}
123
124MACHINE_START(H3600, "Compaq iPAQ H3600")
125 .atag_offset = 0x100,
126 .map_io = h3600_map_io,
127 .nr_irqs = SA1100_NR_IRQS,
128 .init_irq = sa1100_init_irq,
129 .init_time = sa1100_timer_init,
130 .init_machine = h3600_mach_init,
131 .init_late = sa11x0_init_late,
132 .restart = sa11x0_restart,
133MACHINE_END
134
135

source code of linux/arch/arm/mach-sa1100/h3600.c