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