ARM: add support for the EET board, based on the i.MX31 pcm037 module
The "EET" variant of the pcm037 board has an OLED display, using a S6E63D6
display controller on the first SPI interface, using GPIO57 as a chip-select
for it. S6E63D6 is initialised in the boot-loader, so we only have to take care
of the LCD. EET also adds several buttons and LEDs on GPIOs. This patch adds a
"pcm037_variant=" kernel command line parameter to specify at boot-time which
board the kernel is running on, default is "pcm970", specify "eet" for the EET
board.
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/pcm037_eet.c b/arch/arm/mach-mx3/pcm037_eet.c
new file mode 100644
index 0000000..fe52fb1
--- /dev/null
+++ b/arch/arm/mach-mx3/pcm037_eet.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2009
+ * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+
+#include <mach/common.h>
+#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
+#include <mach/spi.h>
+#endif
+#include <mach/iomux-mx3.h>
+
+#include <asm/mach-types.h>
+
+#include "pcm037.h"
+#include "devices.h"
+
+static unsigned int pcm037_eet_pins[] = {
+ /* SPI #1 */
+ MX31_PIN_CSPI1_MISO__MISO,
+ MX31_PIN_CSPI1_MOSI__MOSI,
+ MX31_PIN_CSPI1_SCLK__SCLK,
+ MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
+ MX31_PIN_CSPI1_SS0__SS0,
+ MX31_PIN_CSPI1_SS1__SS1,
+ MX31_PIN_CSPI1_SS2__SS2,
+
+ /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
+ IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
+ /* GPIO keys */
+ IOMUX_MODE(MX31_PIN_GPIO1_0, IOMUX_CONFIG_GPIO), /* 0 */
+ IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO), /* 1 */
+ IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO), /* 2 */
+ IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO), /* 3 */
+ IOMUX_MODE(MX31_PIN_SVEN0, IOMUX_CONFIG_GPIO), /* 32 */
+ IOMUX_MODE(MX31_PIN_STX0, IOMUX_CONFIG_GPIO), /* 33 */
+ IOMUX_MODE(MX31_PIN_SRX0, IOMUX_CONFIG_GPIO), /* 34 */
+ IOMUX_MODE(MX31_PIN_SIMPD0, IOMUX_CONFIG_GPIO), /* 35 */
+ IOMUX_MODE(MX31_PIN_RTS1, IOMUX_CONFIG_GPIO), /* 38 */
+ IOMUX_MODE(MX31_PIN_CTS1, IOMUX_CONFIG_GPIO), /* 39 */
+ IOMUX_MODE(MX31_PIN_KEY_ROW4, IOMUX_CONFIG_GPIO), /* 50 */
+ IOMUX_MODE(MX31_PIN_KEY_ROW5, IOMUX_CONFIG_GPIO), /* 51 */
+ IOMUX_MODE(MX31_PIN_KEY_ROW6, IOMUX_CONFIG_GPIO), /* 52 */
+ IOMUX_MODE(MX31_PIN_KEY_ROW7, IOMUX_CONFIG_GPIO), /* 53 */
+
+ /* LEDs */
+ IOMUX_MODE(MX31_PIN_DTR_DTE1, IOMUX_CONFIG_GPIO), /* 44 */
+ IOMUX_MODE(MX31_PIN_DSR_DTE1, IOMUX_CONFIG_GPIO), /* 45 */
+ IOMUX_MODE(MX31_PIN_KEY_COL5, IOMUX_CONFIG_GPIO), /* 55 */
+ IOMUX_MODE(MX31_PIN_KEY_COL6, IOMUX_CONFIG_GPIO), /* 56 */
+};
+
+/* SPI */
+static struct spi_board_info pcm037_spi_dev[] = {
+ {
+ .modalias = "dac124s085",
+ .max_speed_hz = 400000,
+ .bus_num = 0,
+ .chip_select = 0, /* Index in pcm037_spi1_cs[] */
+ .mode = SPI_CPHA,
+ },
+};
+
+/* Platform Data for MXC CSPI */
+#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
+static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
+
+struct spi_imx_master pcm037_spi1_master = {
+ .chipselect = pcm037_spi1_cs,
+ .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
+};
+#endif
+
+/* GPIO-keys input device */
+static struct gpio_keys_button pcm037_gpio_keys[] = {
+ {
+ .type = EV_KEY,
+ .code = KEY_L,
+ .gpio = 0,
+ .desc = "Wheel Manual",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_A,
+ .gpio = 1,
+ .desc = "Wheel AF",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_V,
+ .gpio = 2,
+ .desc = "Wheel View",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_M,
+ .gpio = 3,
+ .desc = "Wheel Menu",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_UP,
+ .gpio = 32,
+ .desc = "Nav Pad Up",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_RIGHT,
+ .gpio = 33,
+ .desc = "Nav Pad Right",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_DOWN,
+ .gpio = 34,
+ .desc = "Nav Pad Down",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_LEFT,
+ .gpio = 35,
+ .desc = "Nav Pad Left",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_ENTER,
+ .gpio = 38,
+ .desc = "Nav Pad Ok",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = KEY_O,
+ .gpio = 39,
+ .desc = "Wheel Off",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = BTN_FORWARD,
+ .gpio = 50,
+ .desc = "Focus Forward",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = BTN_BACK,
+ .gpio = 51,
+ .desc = "Focus Backward",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = BTN_MIDDLE,
+ .gpio = 52,
+ .desc = "Release Half",
+ .wakeup = 0,
+ }, {
+ .type = EV_KEY,
+ .code = BTN_EXTRA,
+ .gpio = 53,
+ .desc = "Release Full",
+ .wakeup = 0,
+ },
+};
+
+static struct gpio_keys_platform_data pcm037_gpio_keys_platform_data = {
+ .buttons = pcm037_gpio_keys,
+ .nbuttons = ARRAY_SIZE(pcm037_gpio_keys),
+ .rep = 0, /* No auto-repeat */
+};
+
+static struct platform_device pcm037_gpio_keys_device = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &pcm037_gpio_keys_platform_data,
+ },
+};
+
+static int eet_init_devices(void)
+{
+ if (!machine_is_pcm037() || pcm037_variant() != PCM037_EET)
+ return 0;
+
+ mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
+ ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
+
+ /* SPI */
+ spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
+#if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
+ mxc_register_device(&mxc_spi_device0, &pcm037_spi1_master);
+#endif
+
+ platform_device_register(&pcm037_gpio_keys_device);
+
+ return 0;
+}
+
+late_initcall(eet_init_devices);