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