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da177247 GI |
1 | /* |
2 | * board-omap3pandora.c (Pandora Handheld Console) | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
16 | * 02110-1301 USA | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/platform_device.h> | |
23 | ||
24 | #include <linux/spi/spi.h> | |
25 | #include <linux/spi/ads7846.h> | |
26 | #include <linux/i2c/twl4030.h> | |
27 | ||
28 | #include <asm/mach-types.h> | |
29 | #include <asm/mach/arch.h> | |
30 | #include <asm/mach/map.h> | |
31 | ||
32 | #include <mach/board.h> | |
33 | #include <mach/common.h> | |
34 | #include <mach/gpio.h> | |
35 | #include <mach/hardware.h> | |
36 | #include <mach/mcspi.h> | |
37 | ||
38 | #define OMAP3_PANDORA_TS_GPIO 94 | |
39 | ||
40 | static struct omap_uart_config omap3pandora_uart_config __initdata = { | |
41 | .enabled_uarts = (1 << 2), /* UART3 */ | |
42 | }; | |
43 | ||
44 | static struct twl4030_gpio_platform_data omap3pandora_gpio_data = { | |
45 | .gpio_base = OMAP_MAX_GPIO_LINES, | |
46 | .irq_base = TWL4030_GPIO_IRQ_BASE, | |
47 | .irq_end = TWL4030_GPIO_IRQ_END, | |
48 | }; | |
49 | ||
50 | static struct twl4030_usb_data omap3pandora_usb_data = { | |
51 | .usb_mode = T2_USB_MODE_ULPI, | |
52 | }; | |
53 | ||
54 | static struct twl4030_platform_data omap3pandora_twldata = { | |
55 | .irq_base = TWL4030_IRQ_BASE, | |
56 | .irq_end = TWL4030_IRQ_END, | |
57 | .gpio = &omap3pandora_gpio_data, | |
58 | .usb = &omap3pandora_usb_data, | |
59 | }; | |
60 | ||
61 | static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = { | |
62 | { | |
63 | I2C_BOARD_INFO("tps65950", 0x48), | |
64 | .flags = I2C_CLIENT_WAKE, | |
65 | .irq = INT_34XX_SYS_NIRQ, | |
66 | .platform_data = &omap3pandora_twldata, | |
67 | }, | |
68 | }; | |
69 | ||
70 | static int __init omap3pandora_i2c_init(void) | |
71 | { | |
72 | omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo, | |
73 | ARRAY_SIZE(omap3pandora_i2c_boardinfo)); | |
74 | /* i2c2 pins are not connected */ | |
75 | omap_register_i2c_bus(3, 400, NULL, 0); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | static void __init omap3pandora_init_irq(void) | |
80 | { | |
81 | omap2_init_common_hw(); | |
82 | omap_init_irq(); | |
83 | omap_gpio_init(); | |
84 | } | |
85 | ||
86 | static void __init omap3pandora_ads7846_init(void) | |
87 | { | |
88 | int gpio = OMAP3_PANDORA_TS_GPIO; | |
89 | int ret; | |
90 | ||
91 | ret = gpio_request(gpio, "ads7846_pen_down"); | |
92 | if (ret < 0) { | |
93 | printk(KERN_ERR "Failed to request GPIO %d for " | |
94 | "ads7846 pen down IRQ\n", gpio); | |
95 | return; | |
96 | } | |
97 | ||
98 | gpio_direction_input(gpio); | |
99 | } | |
100 | ||
101 | static int ads7846_get_pendown_state(void) | |
102 | { | |
103 | return !gpio_get_value(OMAP3_PANDORA_TS_GPIO); | |
104 | } | |
105 | ||
106 | static struct ads7846_platform_data ads7846_config = { | |
107 | .x_max = 0x0fff, | |
108 | .y_max = 0x0fff, | |
109 | .x_plate_ohms = 180, | |
110 | .pressure_max = 255, | |
111 | .debounce_max = 10, | |
112 | .debounce_tol = 3, | |
113 | .debounce_rep = 1, | |
114 | .get_pendown_state = ads7846_get_pendown_state, | |
115 | .keep_vref_on = 1, | |
116 | }; | |
117 | ||
118 | static struct omap2_mcspi_device_config ads7846_mcspi_config = { | |
119 | .turbo_mode = 0, | |
120 | .single_channel = 1, /* 0: slave, 1: master */ | |
121 | }; | |
122 | ||
123 | static struct spi_board_info omap3pandora_spi_board_info[] __initdata = { | |
124 | { | |
125 | .modalias = "ads7846", | |
126 | .bus_num = 1, | |
127 | .chip_select = 0, | |
128 | .max_speed_hz = 1500000, | |
129 | .controller_data = &ads7846_mcspi_config, | |
130 | .irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO), | |
131 | .platform_data = &ads7846_config, | |
132 | } | |
133 | }; | |
134 | ||
135 | static struct platform_device omap3pandora_lcd_device = { | |
136 | .name = "pandora_lcd", | |
137 | .id = -1, | |
138 | }; | |
139 | ||
140 | static struct omap_lcd_config omap3pandora_lcd_config __initdata = { | |
141 | .ctrl_name = "internal", | |
142 | }; | |
143 | ||
144 | static struct omap_board_config_kernel omap3pandora_config[] __initdata = { | |
145 | { OMAP_TAG_UART, &omap3pandora_uart_config }, | |
146 | { OMAP_TAG_LCD, &omap3pandora_lcd_config }, | |
147 | }; | |
148 | ||
149 | static struct platform_device *omap3pandora_devices[] __initdata = { | |
150 | &omap3pandora_lcd_device, | |
151 | }; | |
152 | ||
153 | static void __init omap3pandora_init(void) | |
154 | { | |
155 | omap3pandora_i2c_init(); | |
156 | platform_add_devices(omap3pandora_devices, | |
157 | ARRAY_SIZE(omap3pandora_devices)); | |
158 | omap_board_config = omap3pandora_config; | |
159 | omap_board_config_size = ARRAY_SIZE(omap3pandora_config); | |
160 | omap_serial_init(); | |
161 | spi_register_board_info(omap3pandora_spi_board_info, | |
162 | ARRAY_SIZE(omap3pandora_spi_board_info)); | |
163 | omap3pandora_ads7846_init(); | |
164 | } | |
165 | ||
166 | static void __init omap3pandora_map_io(void) | |
167 | { | |
168 | omap2_set_globals_343x(); | |
169 | omap2_map_common_io(); | |
170 | } | |
171 | ||
172 | MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console") | |
173 | .phys_io = 0x48000000, | |
174 | .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc, | |
175 | .boot_params = 0x80000100, | |
176 | .map_io = omap3pandora_map_io, | |
177 | .init_irq = omap3pandora_init_irq, | |
178 | .init_machine = omap3pandora_init, | |
179 | .timer = &omap_timer, | |
180 | MACHINE_END |