kernel/2.6.29.6-aldebaran-rt/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