250 lines
5.7 KiB
C
250 lines
5.7 KiB
C
/*
|
|
* Copyright (C) 2009 Eric Benard - eric@eukrea.com
|
|
*
|
|
* Based on pcm970-baseboard.c which is :
|
|
* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/gpio.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/spi/ads7846.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include <mach/common.h>
|
|
#include <mach/iomux.h>
|
|
#include <mach/imxfb.h>
|
|
#include <mach/hardware.h>
|
|
#include <mach/mmc.h>
|
|
#include <mach/imx-uart.h>
|
|
|
|
#include "devices.h"
|
|
|
|
static int eukrea_mbimx27_pins[] = {
|
|
/* UART2 */
|
|
PE3_PF_UART2_CTS,
|
|
PE4_PF_UART2_RTS,
|
|
PE6_PF_UART2_TXD,
|
|
PE7_PF_UART2_RXD,
|
|
/* UART3 */
|
|
PE8_PF_UART3_TXD,
|
|
PE9_PF_UART3_RXD,
|
|
PE10_PF_UART3_CTS,
|
|
PE11_PF_UART3_RTS,
|
|
/* UART4 */
|
|
PB26_AF_UART4_RTS,
|
|
PB28_AF_UART4_TXD,
|
|
PB29_AF_UART4_CTS,
|
|
PB31_AF_UART4_RXD,
|
|
/* SDHC1*/
|
|
PE18_PF_SD1_D0,
|
|
PE19_PF_SD1_D1,
|
|
PE20_PF_SD1_D2,
|
|
PE21_PF_SD1_D3,
|
|
PE22_PF_SD1_CMD,
|
|
PE23_PF_SD1_CLK,
|
|
/* display */
|
|
PA5_PF_LSCLK,
|
|
PA6_PF_LD0,
|
|
PA7_PF_LD1,
|
|
PA8_PF_LD2,
|
|
PA9_PF_LD3,
|
|
PA10_PF_LD4,
|
|
PA11_PF_LD5,
|
|
PA12_PF_LD6,
|
|
PA13_PF_LD7,
|
|
PA14_PF_LD8,
|
|
PA15_PF_LD9,
|
|
PA16_PF_LD10,
|
|
PA17_PF_LD11,
|
|
PA18_PF_LD12,
|
|
PA19_PF_LD13,
|
|
PA20_PF_LD14,
|
|
PA21_PF_LD15,
|
|
PA22_PF_LD16,
|
|
PA23_PF_LD17,
|
|
PA28_PF_HSYNC,
|
|
PA29_PF_VSYNC,
|
|
PA30_PF_CONTRAST,
|
|
PA31_PF_OE_ACD,
|
|
/* SPI1 */
|
|
PD28_PF_CSPI1_SS0,
|
|
PD29_PF_CSPI1_SCLK,
|
|
PD30_PF_CSPI1_MISO,
|
|
PD31_PF_CSPI1_MOSI,
|
|
};
|
|
|
|
static struct gpio_led gpio_leds[] = {
|
|
{
|
|
.name = "led1",
|
|
.default_trigger = "heartbeat",
|
|
.active_low = 1,
|
|
.gpio = GPIO_PORTF | 16,
|
|
},
|
|
{
|
|
.name = "led2",
|
|
.default_trigger = "none",
|
|
.active_low = 1,
|
|
.gpio = GPIO_PORTF | 19,
|
|
},
|
|
{
|
|
.name = "backlight",
|
|
.default_trigger = "backlight",
|
|
.active_low = 0,
|
|
.gpio = GPIO_PORTE | 5,
|
|
},
|
|
};
|
|
|
|
static struct gpio_led_platform_data gpio_led_info = {
|
|
.leds = gpio_leds,
|
|
.num_leds = ARRAY_SIZE(gpio_leds),
|
|
};
|
|
|
|
static struct platform_device leds_gpio = {
|
|
.name = "leds-gpio",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &gpio_led_info,
|
|
},
|
|
};
|
|
|
|
static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
|
|
{
|
|
.mode = {
|
|
.name = "CMO-QGVA",
|
|
.refresh = 60,
|
|
.xres = 320,
|
|
.yres = 240,
|
|
.pixclock = 156000,
|
|
.hsync_len = 30,
|
|
.left_margin = 38,
|
|
.right_margin = 20,
|
|
.vsync_len = 3,
|
|
.upper_margin = 15,
|
|
.lower_margin = 4,
|
|
},
|
|
.pcr = 0xFAD08B80,
|
|
.bpp = 16,
|
|
},
|
|
};
|
|
|
|
static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
|
|
.mode = eukrea_mbimx27_modes,
|
|
.num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
|
|
|
|
.pwmr = 0x00A903FF,
|
|
.lscr1 = 0x00120300,
|
|
.dmacr = 0x00040060,
|
|
};
|
|
|
|
static struct imxuart_platform_data uart_pdata[] = {
|
|
{
|
|
.flags = IMXUART_HAVE_RTSCTS,
|
|
},
|
|
{
|
|
.flags = IMXUART_HAVE_RTSCTS,
|
|
},
|
|
};
|
|
|
|
#if defined(CONFIG_TOUCHSCREEN_ADS7846)
|
|
|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
|
|
|
|
#define ADS7846_PENDOWN (GPIO_PORTD | 25)
|
|
|
|
static void ads7846_dev_init(void)
|
|
{
|
|
if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
|
|
printk(KERN_ERR "can't get ads746 pen down GPIO\n");
|
|
return;
|
|
}
|
|
|
|
gpio_direction_input(ADS7846_PENDOWN);
|
|
}
|
|
|
|
static int ads7846_get_pendown_state(void)
|
|
{
|
|
return !gpio_get_value(ADS7846_PENDOWN);
|
|
}
|
|
|
|
static struct ads7846_platform_data ads7846_config __initdata = {
|
|
.get_pendown_state = ads7846_get_pendown_state,
|
|
.keep_vref_on = 1,
|
|
};
|
|
|
|
static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
|
|
[0] = {
|
|
.modalias = "ads7846",
|
|
.bus_num = 0,
|
|
.chip_select = 0,
|
|
.max_speed_hz = 1500000,
|
|
.irq = IRQ_GPIOD(25),
|
|
.platform_data = &ads7846_config,
|
|
.mode = SPI_MODE_2,
|
|
},
|
|
};
|
|
|
|
static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
|
|
|
|
static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
|
|
.chipselect = eukrea_mbimx27_spi_cs,
|
|
.num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
|
|
};
|
|
#endif
|
|
|
|
static struct platform_device *platform_devices[] __initdata = {
|
|
&leds_gpio,
|
|
};
|
|
|
|
/*
|
|
* system init for baseboard usage. Will be called by cpuimx27 init.
|
|
*
|
|
* Add platform devices present on this baseboard and init
|
|
* them from CPU side as far as required to use them later on
|
|
*/
|
|
void __init eukrea_mbimx27_baseboard_init(void)
|
|
{
|
|
mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
|
|
ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
|
|
|
|
mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
|
|
mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
|
|
|
|
mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
|
|
mxc_register_device(&mxc_sdhc_device0, NULL);
|
|
|
|
#if defined(CONFIG_TOUCHSCREEN_ADS7846)
|
|
|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
|
|
/* SPI and ADS7846 Touchscreen controler init */
|
|
mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
|
|
mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
|
|
mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
|
|
spi_register_board_info(eukrea_mbimx27_spi_board_info,
|
|
ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
|
|
ads7846_dev_init();
|
|
#endif
|
|
|
|
/* Leds configuration */
|
|
mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
|
|
mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
|
|
/* Backlight */
|
|
mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
|
|
|
|
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
|
|
}
|