Add support for Eukrea's MBIMX27

MBIMX27 is the evaluation board for CPUIMX27 and integrates : a
QVGA TFT, a SPI touchscreen controler, a SDCard connector wired to
SDHC1.

Signed-off-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 264 insertions, 0 deletions

diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 2c2be3953d80..0c28a37bc14e 100644
--- a/arch/arm/mach-mx2/Kconfig
+++ b/arch/arm/mach-mx2/Kconfig
@@ -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
diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
index e12490f670d3..8b6846c42262 100644
--- a/arch/arm/mach-mx2/Makefile
+++ b/arch/arm/mach-mx2/Makefile
@@ -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
diff --git a/arch/arm/mach-mx2/eukrea_mbimx27-baseboard.c b/arch/arm/mach-mx2/eukrea_mbimx27-baseboard.c
new file mode 100644
index 000000000000..7382b6d27ee1
--- /dev/null
+++ b/arch/arm/mach-mx2/eukrea_mbimx27-baseboard.c
@@ -0,0 +1,249 @@
+/*
+ * 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));
+}