Merge branch 'omap3-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...
[linux-2.6] / arch / arm / mach-omap2 / board-omap3pandora.c
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