Add support for Eukrea's MBIMX27 (a961bf38) · Commits · e / devices / android_kernel_fairphone_FP3

arch/arm/mach-mx2/Kconfig

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		@@ -67,6 +67,20 @@ config MACH_EUKREA_CPUIMX27_USESDHC2
		This adds support for the internal SDHC2 used on CPUIMX27 used
		for wifi or eMMC.

		choice
		prompt "Baseboard"
		depends on MACH_EUKREA_CPUIMX27
		default MACH_EUKREA_MBIMX27_BASEBOARD

		config MACH_EUKREA_MBIMX27_BASEBOARD
		prompt "Eukrea MBIMX27 development board"
		bool
		help
		This adds board specific devices that can be found on Eukrea's
		MBIMX27 evaluation board.

		endchoice

		config MACH_MX27_3DS
		bool "MX27PDK platform"
		depends on MACH_MX27

arch/arm/mach-mx2/Makefile

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		@@ -18,3 +18,4 @@ obj-$(CONFIG_MACH_PCM970_BASEBOARD) += pcm970-baseboard.o
		obj-$(CONFIG_MACH_MX27_3DS) += mx27pdk.o
		obj-$(CONFIG_MACH_MX27LITE) += mx27lite.o
		obj-$(CONFIG_MACH_EUKREA_CPUIMX27) += eukrea_cpuimx27.o
		obj-$(CONFIG_MACH_EUKREA_MBIMX27_BASEBOARD) += eukrea_mbimx27-baseboard.o

arch/arm/mach-mx2/eukrea_mbimx27-baseboard.c

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		/*
		* 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));
		}

arch/arm/plat-mxc/include/mach/board-eukrea_cpuimx27.h

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		@@ -22,4 +22,19 @@
		#ifndef __ASM_ARCH_MXC_BOARD_EUKREA_CPUIMX27_H__
		#define __ASM_ARCH_MXC_BOARD_EUKREA_CPUIMX27_H__

		#ifndef __ASSEMBLY__
		/*
		* This CPU module needs a baseboard to work. After basic initializing
		* its own devices, it calls baseboard's init function.
		* TODO: Add your own baseboard init function and call it from
		* inside eukrea_cpuimx27_init().
		*
		* This example here is for the development board. Refer
		* eukrea_mbimx27-baseboard.c
		*/

		extern void eukrea_mbimx27_baseboard_init(void);

		#endif

		#endif /* __ASM_ARCH_MXC_BOARD_EUKREA_CPUIMX27_H__ */