Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[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 #include "mmc-twl4030.h"
39
40 #define OMAP3_PANDORA_TS_GPIO           94
41
42 static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
43         {
44                 .mmc            = 1,
45                 .wires          = 4,
46                 .gpio_cd        = -EINVAL,
47                 .gpio_wp        = 126,
48                 .ext_clock      = 0,
49         },
50         {
51                 .mmc            = 2,
52                 .wires          = 4,
53                 .gpio_cd        = -EINVAL,
54                 .gpio_wp        = 127,
55                 .ext_clock      = 1,
56         },
57         {}      /* Terminator */
58 };
59
60 static struct omap_uart_config omap3pandora_uart_config __initdata = {
61         .enabled_uarts  = (1 << 2), /* UART3 */
62 };
63
64 static int omap3pandora_twl_gpio_setup(struct device *dev,
65                 unsigned gpio, unsigned ngpio)
66 {
67         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
68         omap3pandora_mmc[0].gpio_cd = gpio + 0;
69         omap3pandora_mmc[1].gpio_cd = gpio + 1;
70         twl4030_mmc_init(omap3pandora_mmc);
71
72         return 0;
73 }
74
75 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
76         .gpio_base      = OMAP_MAX_GPIO_LINES,
77         .irq_base       = TWL4030_GPIO_IRQ_BASE,
78         .irq_end        = TWL4030_GPIO_IRQ_END,
79         .setup          = omap3pandora_twl_gpio_setup,
80 };
81
82 static struct twl4030_usb_data omap3pandora_usb_data = {
83         .usb_mode       = T2_USB_MODE_ULPI,
84 };
85
86 static struct twl4030_platform_data omap3pandora_twldata = {
87         .irq_base       = TWL4030_IRQ_BASE,
88         .irq_end        = TWL4030_IRQ_END,
89         .gpio           = &omap3pandora_gpio_data,
90         .usb            = &omap3pandora_usb_data,
91 };
92
93 static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
94         {
95                 I2C_BOARD_INFO("tps65950", 0x48),
96                 .flags = I2C_CLIENT_WAKE,
97                 .irq = INT_34XX_SYS_NIRQ,
98                 .platform_data = &omap3pandora_twldata,
99         },
100 };
101
102 static int __init omap3pandora_i2c_init(void)
103 {
104         omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
105                         ARRAY_SIZE(omap3pandora_i2c_boardinfo));
106         /* i2c2 pins are not connected */
107         omap_register_i2c_bus(3, 400, NULL, 0);
108         return 0;
109 }
110
111 static void __init omap3pandora_init_irq(void)
112 {
113         omap2_init_common_hw();
114         omap_init_irq();
115         omap_gpio_init();
116 }
117
118 static void __init omap3pandora_ads7846_init(void)
119 {
120         int gpio = OMAP3_PANDORA_TS_GPIO;
121         int ret;
122
123         ret = gpio_request(gpio, "ads7846_pen_down");
124         if (ret < 0) {
125                 printk(KERN_ERR "Failed to request GPIO %d for "
126                                 "ads7846 pen down IRQ\n", gpio);
127                 return;
128         }
129
130         gpio_direction_input(gpio);
131 }
132
133 static int ads7846_get_pendown_state(void)
134 {
135         return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
136 }
137
138 static struct ads7846_platform_data ads7846_config = {
139         .x_max                  = 0x0fff,
140         .y_max                  = 0x0fff,
141         .x_plate_ohms           = 180,
142         .pressure_max           = 255,
143         .debounce_max           = 10,
144         .debounce_tol           = 3,
145         .debounce_rep           = 1,
146         .get_pendown_state      = ads7846_get_pendown_state,
147         .keep_vref_on           = 1,
148 };
149
150 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
151         .turbo_mode     = 0,
152         .single_channel = 1,    /* 0: slave, 1: master */
153 };
154
155 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
156         {
157                 .modalias               = "ads7846",
158                 .bus_num                = 1,
159                 .chip_select            = 0,
160                 .max_speed_hz           = 1500000,
161                 .controller_data        = &ads7846_mcspi_config,
162                 .irq                    = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
163                 .platform_data          = &ads7846_config,
164         }
165 };
166
167 static struct platform_device omap3pandora_lcd_device = {
168         .name           = "pandora_lcd",
169         .id             = -1,
170 };
171
172 static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
173         .ctrl_name      = "internal",
174 };
175
176 static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
177         { OMAP_TAG_UART,        &omap3pandora_uart_config },
178         { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
179 };
180
181 static struct platform_device *omap3pandora_devices[] __initdata = {
182         &omap3pandora_lcd_device,
183 };
184
185 static void __init omap3pandora_init(void)
186 {
187         omap3pandora_i2c_init();
188         platform_add_devices(omap3pandora_devices,
189                         ARRAY_SIZE(omap3pandora_devices));
190         omap_board_config = omap3pandora_config;
191         omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
192         omap_serial_init();
193         spi_register_board_info(omap3pandora_spi_board_info,
194                         ARRAY_SIZE(omap3pandora_spi_board_info));
195         omap3pandora_ads7846_init();
196 }
197
198 static void __init omap3pandora_map_io(void)
199 {
200         omap2_set_globals_343x();
201         omap2_map_common_io();
202 }
203
204 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
205         .phys_io        = 0x48000000,
206         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
207         .boot_params    = 0x80000100,
208         .map_io         = omap3pandora_map_io,
209         .init_irq       = omap3pandora_init_irq,
210         .init_machine   = omap3pandora_init,
211         .timer          = &omap_timer,
212 MACHINE_END