249 lines
5.7 KiB
C
249 lines
5.7 KiB
C
/*
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* Copyright (C) 2009 Eric Benard - eric@eukrea.com
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*
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* Based on pcm970-baseboard.c which is :
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* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
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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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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/gpio.h>
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#include <linux/irq.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 <asm/mach/arch.h>
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#include <mach/common.h>
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#include <mach/iomux-mx27.h>
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#include <mach/imxfb.h>
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#include <mach/hardware.h>
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#include <mach/mmc.h>
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#include <mach/imx-uart.h>
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#include "devices.h"
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static int eukrea_mbimx27_pins[] = {
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/* UART2 */
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PE3_PF_UART2_CTS,
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PE4_PF_UART2_RTS,
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PE6_PF_UART2_TXD,
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PE7_PF_UART2_RXD,
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/* UART3 */
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PE8_PF_UART3_TXD,
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PE9_PF_UART3_RXD,
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PE10_PF_UART3_CTS,
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PE11_PF_UART3_RTS,
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/* UART4 */
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PB26_AF_UART4_RTS,
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PB28_AF_UART4_TXD,
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PB29_AF_UART4_CTS,
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PB31_AF_UART4_RXD,
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/* SDHC1*/
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PE18_PF_SD1_D0,
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PE19_PF_SD1_D1,
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PE20_PF_SD1_D2,
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PE21_PF_SD1_D3,
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PE22_PF_SD1_CMD,
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PE23_PF_SD1_CLK,
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/* display */
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PA5_PF_LSCLK,
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PA6_PF_LD0,
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PA7_PF_LD1,
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PA8_PF_LD2,
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PA9_PF_LD3,
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PA10_PF_LD4,
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PA11_PF_LD5,
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PA12_PF_LD6,
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PA13_PF_LD7,
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PA14_PF_LD8,
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PA15_PF_LD9,
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PA16_PF_LD10,
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PA17_PF_LD11,
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PA18_PF_LD12,
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PA19_PF_LD13,
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PA20_PF_LD14,
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PA21_PF_LD15,
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PA22_PF_LD16,
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PA23_PF_LD17,
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PA28_PF_HSYNC,
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PA29_PF_VSYNC,
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PA30_PF_CONTRAST,
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PA31_PF_OE_ACD,
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/* SPI1 */
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PD28_PF_CSPI1_SS0,
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PD29_PF_CSPI1_SCLK,
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PD30_PF_CSPI1_MISO,
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PD31_PF_CSPI1_MOSI,
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};
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static struct gpio_led gpio_leds[] = {
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{
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.name = "led1",
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.default_trigger = "heartbeat",
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.active_low = 1,
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.gpio = GPIO_PORTF | 16,
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},
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{
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.name = "led2",
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.default_trigger = "none",
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.active_low = 1,
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.gpio = GPIO_PORTF | 19,
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},
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{
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.name = "backlight",
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.default_trigger = "backlight",
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.active_low = 0,
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.gpio = GPIO_PORTE | 5,
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},
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};
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static struct gpio_led_platform_data gpio_led_info = {
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.leds = gpio_leds,
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.num_leds = ARRAY_SIZE(gpio_leds),
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};
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static struct platform_device leds_gpio = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &gpio_led_info,
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},
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};
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static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
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{
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.mode = {
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.name = "CMO-QGVA",
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.refresh = 60,
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.xres = 320,
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.yres = 240,
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.pixclock = 156000,
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.hsync_len = 30,
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.left_margin = 38,
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.right_margin = 20,
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.vsync_len = 3,
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.upper_margin = 15,
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.lower_margin = 4,
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},
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.pcr = 0xFAD08B80,
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.bpp = 16,
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},
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};
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static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
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.mode = eukrea_mbimx27_modes,
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.num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
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.pwmr = 0x00A903FF,
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.lscr1 = 0x00120300,
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.dmacr = 0x00040060,
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};
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static struct imxuart_platform_data uart_pdata[] = {
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{
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.flags = IMXUART_HAVE_RTSCTS,
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},
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{
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.flags = IMXUART_HAVE_RTSCTS,
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},
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};
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#if defined(CONFIG_TOUCHSCREEN_ADS7846)
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|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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#define ADS7846_PENDOWN (GPIO_PORTD | 25)
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static void ads7846_dev_init(void)
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{
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if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
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printk(KERN_ERR "can't get ads746 pen down GPIO\n");
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return;
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}
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gpio_direction_input(ADS7846_PENDOWN);
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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(ADS7846_PENDOWN);
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}
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static struct ads7846_platform_data ads7846_config __initdata = {
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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 spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
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[0] = {
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.modalias = "ads7846",
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.bus_num = 0,
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.chip_select = 0,
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.max_speed_hz = 1500000,
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.irq = IRQ_GPIOD(25),
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.platform_data = &ads7846_config,
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.mode = SPI_MODE_2,
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},
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};
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static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
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static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
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.chipselect = eukrea_mbimx27_spi_cs,
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.num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
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};
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#endif
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static struct platform_device *platform_devices[] __initdata = {
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&leds_gpio,
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};
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/*
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* system init for baseboard usage. Will be called by cpuimx27 init.
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*
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* Add platform devices present on this baseboard and init
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* them from CPU side as far as required to use them later on
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*/
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void __init eukrea_mbimx27_baseboard_init(void)
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{
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mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
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ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
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mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
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mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
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mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
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mxc_register_device(&mxc_sdhc_device0, NULL);
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#if defined(CONFIG_TOUCHSCREEN_ADS7846)
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|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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/* SPI and ADS7846 Touchscreen controler init */
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mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
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mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
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mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
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spi_register_board_info(eukrea_mbimx27_spi_board_info,
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ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
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ads7846_dev_init();
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#endif
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/* Leds configuration */
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mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
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mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
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/* Backlight */
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mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
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platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
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}
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