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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>
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Guennadi Liakhovetski
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Sascha Hauer
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Jun 23, 2009
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| #ifndef __PCM037_H__ | ||
| #define __PCM037_H__ | ||
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| enum pcm037_board_variant { | ||
| PCM037_PCM970, | ||
| PCM037_EET, | ||
| }; | ||
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| extern enum pcm037_board_variant pcm037_variant(void); | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * 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> | ||
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| #include <mach/common.h> | ||
| #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE) | ||
| #include <mach/spi.h> | ||
| #endif | ||
| #include <mach/iomux-mx3.h> | ||
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| #include <asm/mach-types.h> | ||
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| #include "pcm037.h" | ||
| #include "devices.h" | ||
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| 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, | ||
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| /* 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 */ | ||
|
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| /* 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 */ | ||
| }; | ||
|
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| /* 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, | ||
| }, | ||
| }; | ||
|
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| /* 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)}; | ||
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| struct spi_imx_master pcm037_spi1_master = { | ||
| .chipselect = pcm037_spi1_cs, | ||
| .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs), | ||
| }; | ||
| #endif | ||
|
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| /* 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, | ||
| }, | ||
| }; | ||
|
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| 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 */ | ||
| }; | ||
|
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| static struct platform_device pcm037_gpio_keys_device = { | ||
| .name = "gpio-keys", | ||
| .id = -1, | ||
| .dev = { | ||
| .platform_data = &pcm037_gpio_keys_platform_data, | ||
| }, | ||
| }; | ||
|
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| static int eet_init_devices(void) | ||
| { | ||
| if (!machine_is_pcm037() || pcm037_variant() != PCM037_EET) | ||
| return 0; | ||
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| mxc_iomux_setup_multiple_pins(pcm037_eet_pins, | ||
| ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet"); | ||
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| /* 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 | ||
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| platform_device_register(&pcm037_gpio_keys_device); | ||
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| return 0; | ||
| } | ||
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| late_initcall(eet_init_devices); |