181 lines
4.6 KiB
C
181 lines
4.6 KiB
C
/*
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* board-omap3pandora.c (Pandora Handheld Console)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/i2c/twl4030.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/board.h>
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#include <mach/common.h>
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#include <mach/gpio.h>
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#include <mach/hardware.h>
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#include <mach/mcspi.h>
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#define OMAP3_PANDORA_TS_GPIO 94
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static struct omap_uart_config omap3pandora_uart_config __initdata = {
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.enabled_uarts = (1 << 2), /* UART3 */
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};
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static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
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.gpio_base = OMAP_MAX_GPIO_LINES,
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.irq_base = TWL4030_GPIO_IRQ_BASE,
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.irq_end = TWL4030_GPIO_IRQ_END,
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};
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static struct twl4030_usb_data omap3pandora_usb_data = {
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.usb_mode = T2_USB_MODE_ULPI,
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};
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static struct twl4030_platform_data omap3pandora_twldata = {
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.irq_base = TWL4030_IRQ_BASE,
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.irq_end = TWL4030_IRQ_END,
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.gpio = &omap3pandora_gpio_data,
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.usb = &omap3pandora_usb_data,
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};
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static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
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{
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I2C_BOARD_INFO("tps65950", 0x48),
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.flags = I2C_CLIENT_WAKE,
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.irq = INT_34XX_SYS_NIRQ,
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.platform_data = &omap3pandora_twldata,
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},
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};
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static int __init omap3pandora_i2c_init(void)
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{
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omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
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ARRAY_SIZE(omap3pandora_i2c_boardinfo));
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/* i2c2 pins are not connected */
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omap_register_i2c_bus(3, 400, NULL, 0);
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return 0;
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}
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static void __init omap3pandora_init_irq(void)
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{
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omap2_init_common_hw();
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omap_init_irq();
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omap_gpio_init();
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}
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static void __init omap3pandora_ads7846_init(void)
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{
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int gpio = OMAP3_PANDORA_TS_GPIO;
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int ret;
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ret = gpio_request(gpio, "ads7846_pen_down");
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if (ret < 0) {
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printk(KERN_ERR "Failed to request GPIO %d for "
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"ads7846 pen down IRQ\n", gpio);
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return;
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}
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gpio_direction_input(gpio);
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}
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static int ads7846_get_pendown_state(void)
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{
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return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
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}
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static struct ads7846_platform_data ads7846_config = {
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.x_max = 0x0fff,
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.y_max = 0x0fff,
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.x_plate_ohms = 180,
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.pressure_max = 255,
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.debounce_max = 10,
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.debounce_tol = 3,
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.debounce_rep = 1,
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.get_pendown_state = ads7846_get_pendown_state,
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.keep_vref_on = 1,
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};
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static struct omap2_mcspi_device_config ads7846_mcspi_config = {
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.turbo_mode = 0,
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.single_channel = 1, /* 0: slave, 1: master */
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};
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static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
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{
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.modalias = "ads7846",
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.bus_num = 1,
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.chip_select = 0,
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.max_speed_hz = 1500000,
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.controller_data = &ads7846_mcspi_config,
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.irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
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.platform_data = &ads7846_config,
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}
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};
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static struct platform_device omap3pandora_lcd_device = {
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.name = "pandora_lcd",
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.id = -1,
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};
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static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
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{ OMAP_TAG_UART, &omap3pandora_uart_config },
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{ OMAP_TAG_LCD, &omap3pandora_lcd_config },
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};
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static struct platform_device *omap3pandora_devices[] __initdata = {
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&omap3pandora_lcd_device,
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};
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static void __init omap3pandora_init(void)
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{
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omap3pandora_i2c_init();
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platform_add_devices(omap3pandora_devices,
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ARRAY_SIZE(omap3pandora_devices));
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omap_board_config = omap3pandora_config;
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omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
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omap_serial_init();
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spi_register_board_info(omap3pandora_spi_board_info,
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ARRAY_SIZE(omap3pandora_spi_board_info));
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omap3pandora_ads7846_init();
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}
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static void __init omap3pandora_map_io(void)
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{
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omap2_set_globals_343x();
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omap2_map_common_io();
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}
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MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
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.phys_io = 0x48000000,
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.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
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.boot_params = 0x80000100,
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.map_io = omap3pandora_map_io,
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.init_irq = omap3pandora_init_irq,
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.init_machine = omap3pandora_init,
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.timer = &omap_timer,
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MACHINE_END
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