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   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 #include <mach/usb.h>
  38
  39 #include "mmc-twl4030.h"
  40
  41 #define OMAP3_PANDORA_TS_GPIO           94
  42
  43 static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
  44         {
  45                 .mmc            = 1,
  46                 .wires          = 4,
  47                 .gpio_cd        = -EINVAL,
  48                 .gpio_wp        = 126,
  49                 .ext_clock      = 0,
  50         },
  51         {
  52                 .mmc            = 2,
  53                 .wires          = 4,
  54                 .gpio_cd        = -EINVAL,
  55                 .gpio_wp        = 127,
  56                 .ext_clock      = 1,
  57                 .transceiver    = true,
  58         },
  59         {
  60                 .mmc            = 3,
  61                 .wires          = 4,
  62                 .gpio_cd        = -EINVAL,
  63                 .gpio_wp        = -EINVAL,
  64         },
  65         {}      /* Terminator */
  66 };
  67
  68 static struct omap_uart_config omap3pandora_uart_config __initdata = {
  69         .enabled_uarts  = (1 << 2), /* UART3 */
  70 };
  71
  72 static int omap3pandora_twl_gpio_setup(struct device *dev,
  73                 unsigned gpio, unsigned ngpio)
  74 {
  75         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
  76         omap3pandora_mmc[0].gpio_cd = gpio + 0;
  77         omap3pandora_mmc[1].gpio_cd = gpio + 1;
  78         twl4030_mmc_init(omap3pandora_mmc);
  79
  80         return 0;
  81 }
  82
  83 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
  84         .gpio_base      = OMAP_MAX_GPIO_LINES,
  85         .irq_base       = TWL4030_GPIO_IRQ_BASE,
  86         .irq_end        = TWL4030_GPIO_IRQ_END,
  87         .setup          = omap3pandora_twl_gpio_setup,
  88 };
  89
  90 static struct twl4030_usb_data omap3pandora_usb_data = {
  91         .usb_mode       = T2_USB_MODE_ULPI,
  92 };
  93
  94 static struct twl4030_platform_data omap3pandora_twldata = {
  95         .irq_base       = TWL4030_IRQ_BASE,
  96         .irq_end        = TWL4030_IRQ_END,
  97         .gpio           = &omap3pandora_gpio_data,
  98         .usb            = &omap3pandora_usb_data,
  99 };
 100
 101 static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
 102         {
 103                 I2C_BOARD_INFO("tps65950", 0x48),
 104                 .flags = I2C_CLIENT_WAKE,
 105                 .irq = INT_34XX_SYS_NIRQ,
 106                 .platform_data = &omap3pandora_twldata,
 107         },
 108 };
 109
 110 static int __init omap3pandora_i2c_init(void)
 111 {
 112         omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
 113                         ARRAY_SIZE(omap3pandora_i2c_boardinfo));
 114         /* i2c2 pins are not connected */
 115         omap_register_i2c_bus(3, 400, NULL, 0);
 116         return 0;
 117 }
 118
 119 static void __init omap3pandora_init_irq(void)
 120 {
 121         omap2_init_common_hw(NULL);
 122         omap_init_irq();
 123         omap_gpio_init();
 124 }
 125
 126 static void __init omap3pandora_ads7846_init(void)
 127 {
 128         int gpio = OMAP3_PANDORA_TS_GPIO;
 129         int ret;
 130
 131         ret = gpio_request(gpio, "ads7846_pen_down");
 132         if (ret < 0) {
 133                 printk(KERN_ERR "Failed to request GPIO %d for "
 134                                 "ads7846 pen down IRQ\n", gpio);
 135                 return;
 136         }
 137
 138         gpio_direction_input(gpio);
 139 }
 140
 141 static int ads7846_get_pendown_state(void)
 142 {
 143         return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
 144 }
 145
 146 static struct ads7846_platform_data ads7846_config = {
 147         .x_max                  = 0x0fff,
 148         .y_max                  = 0x0fff,
 149         .x_plate_ohms           = 180,
 150         .pressure_max           = 255,
 151         .debounce_max           = 10,
 152         .debounce_tol           = 3,
 153         .debounce_rep           = 1,
 154         .get_pendown_state      = ads7846_get_pendown_state,
 155         .keep_vref_on           = 1,
 156 };
 157
 158 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 159         .turbo_mode     = 0,
 160         .single_channel = 1,    /* 0: slave, 1: master */
 161 };
 162
 163 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
 164         {
 165                 .modalias               = "ads7846",
 166                 .bus_num                = 1,
 167                 .chip_select            = 0,
 168                 .max_speed_hz           = 1500000,
 169                 .controller_data        = &ads7846_mcspi_config,
 170                 .irq                    = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
 171                 .platform_data          = &ads7846_config,
 172         }
 173 };
 174
 175 static struct platform_device omap3pandora_lcd_device = {
 176         .name           = "pandora_lcd",
 177         .id             = -1,
 178 };
 179
 180 static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
 181         .ctrl_name      = "internal",
 182 };
 183
 184 static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
 185         { OMAP_TAG_UART,        &omap3pandora_uart_config },
 186         { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
 187 };
 188
 189 static struct platform_device *omap3pandora_devices[] __initdata = {
 190         &omap3pandora_lcd_device,
 191 };
 192
 193 static void __init omap3pandora_init(void)
 194 {
 195         omap3pandora_i2c_init();
 196         platform_add_devices(omap3pandora_devices,
 197                         ARRAY_SIZE(omap3pandora_devices));
 198         omap_board_config = omap3pandora_config;
 199         omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
 200         omap_serial_init();
 201         spi_register_board_info(omap3pandora_spi_board_info,
 202                         ARRAY_SIZE(omap3pandora_spi_board_info));
 203         omap3pandora_ads7846_init();
 204         usb_musb_init();
 205 }
 206
 207 static void __init omap3pandora_map_io(void)
 208 {
 209         omap2_set_globals_343x();
 210         omap2_map_common_io();
 211 }
 212
 213 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
 214         .phys_io        = 0x48000000,
 215         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 216         .boot_params    = 0x80000100,
 217         .map_io         = omap3pandora_map_io,
 218         .init_irq       = omap3pandora_init_irq,
 219         .init_machine   = omap3pandora_init,
 220         .timer          = &omap_timer,
 221 MACHINE_END