| /* |
| * Copyright (C) 2010 Linaro Limited |
| * |
| * based on code from the following |
| * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. |
| * Copyright 2009-2010 Pegatron Corporation. All Rights Reserved. |
| * Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved. |
| * |
| * The code contained herein is licensed under the GNU General Public |
| * License. You may obtain a copy of the GNU General Public License |
| * Version 2 or later at the following locations: |
| * |
| * http://www.opensource.org/licenses/gpl-license.html |
| * http://www.gnu.org/copyleft/gpl.html |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/i2c.h> |
| #include <linux/gpio.h> |
| #include <linux/leds.h> |
| #include <linux/input.h> |
| #include <linux/delay.h> |
| #include <linux/io.h> |
| #include <linux/fsl_devices.h> |
| #include <linux/spi/flash.h> |
| #include <linux/spi/spi.h> |
| |
| #include <mach/common.h> |
| #include <mach/hardware.h> |
| #include <mach/iomux-mx51.h> |
| #include <mach/i2c.h> |
| #include <mach/mxc_ehci.h> |
| |
| #include <asm/irq.h> |
| #include <asm/setup.h> |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/time.h> |
| |
| #include "devices-imx51.h" |
| #include "devices.h" |
| #include "efika.h" |
| |
| #define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16) |
| #define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17) |
| #define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11) |
| |
| #define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13) |
| #define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14) |
| #define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15) |
| |
| #define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31) |
| |
| /* board 1.1 doesn't have same reset gpio */ |
| #define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2) |
| #define EFIKAMX_RESET IMX_GPIO_NR(1, 4) |
| |
| /* the pci ids pin have pull up. they're driven low according to board id */ |
| #define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) |
| #define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) |
| #define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) |
| #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE) |
| |
| static iomux_v3_cfg_t mx51efikamx_pads[] = { |
| /* board id */ |
| MX51_PAD_PCBID0, |
| MX51_PAD_PCBID1, |
| MX51_PAD_PCBID2, |
| |
| /* leds */ |
| MX51_PAD_CSI1_D9__GPIO3_13, |
| MX51_PAD_CSI1_VSYNC__GPIO3_14, |
| MX51_PAD_CSI1_HSYNC__GPIO3_15, |
| |
| /* power key */ |
| MX51_PAD_PWRKEY, |
| |
| /* reset */ |
| MX51_PAD_DI1_PIN13__GPIO3_2, |
| MX51_PAD_GPIO1_4__GPIO1_4, |
| }; |
| |
| /* PCBID2 PCBID1 PCBID0 STATE |
| 1 1 1 ER1:rev1.1 |
| 1 1 0 ER2:rev1.2 |
| 1 0 1 ER3:rev1.3 |
| 1 0 0 ER4:rev1.4 |
| */ |
| static void __init mx51_efikamx_board_id(void) |
| { |
| int id; |
| |
| /* things are taking time to settle */ |
| msleep(150); |
| |
| gpio_request(EFIKAMX_PCBID0, "pcbid0"); |
| gpio_direction_input(EFIKAMX_PCBID0); |
| gpio_request(EFIKAMX_PCBID1, "pcbid1"); |
| gpio_direction_input(EFIKAMX_PCBID1); |
| gpio_request(EFIKAMX_PCBID2, "pcbid2"); |
| gpio_direction_input(EFIKAMX_PCBID2); |
| |
| id = gpio_get_value(EFIKAMX_PCBID0); |
| id |= gpio_get_value(EFIKAMX_PCBID1) << 1; |
| id |= gpio_get_value(EFIKAMX_PCBID2) << 2; |
| |
| switch (id) { |
| case 7: |
| system_rev = 0x11; |
| break; |
| case 6: |
| system_rev = 0x12; |
| break; |
| case 5: |
| system_rev = 0x13; |
| break; |
| case 4: |
| system_rev = 0x14; |
| break; |
| default: |
| system_rev = 0x10; |
| break; |
| } |
| |
| if ((system_rev == 0x10) |
| || (system_rev == 0x12) |
| || (system_rev == 0x14)) { |
| printk(KERN_WARNING |
| "EfikaMX: Unsupported board revision 1.%u!\n", |
| system_rev & 0xf); |
| } |
| } |
| |
| static struct gpio_led mx51_efikamx_leds[] = { |
| { |
| .name = "efikamx:green", |
| .default_trigger = "default-on", |
| .gpio = EFIKAMX_GREEN_LED, |
| }, |
| { |
| .name = "efikamx:red", |
| .default_trigger = "ide-disk", |
| .gpio = EFIKAMX_RED_LED, |
| }, |
| { |
| .name = "efikamx:blue", |
| .default_trigger = "mmc0", |
| .gpio = EFIKAMX_BLUE_LED, |
| }, |
| }; |
| |
| static struct gpio_led_platform_data mx51_efikamx_leds_data = { |
| .leds = mx51_efikamx_leds, |
| .num_leds = ARRAY_SIZE(mx51_efikamx_leds), |
| }; |
| |
| static struct platform_device mx51_efikamx_leds_device = { |
| .name = "leds-gpio", |
| .id = -1, |
| .dev = { |
| .platform_data = &mx51_efikamx_leds_data, |
| }, |
| }; |
| |
| static struct gpio_keys_button mx51_efikamx_powerkey[] = { |
| { |
| .code = KEY_POWER, |
| .gpio = EFIKAMX_POWER_KEY, |
| .type = EV_PWR, |
| .desc = "Power Button (CM)", |
| .wakeup = 1, |
| .debounce_interval = 10, /* ms */ |
| }, |
| }; |
| |
| static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = { |
| .buttons = mx51_efikamx_powerkey, |
| .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey), |
| }; |
| |
| void mx51_efikamx_reset(void) |
| { |
| if (system_rev == 0x11) |
| gpio_direction_output(EFIKAMX_RESET1_1, 0); |
| else |
| gpio_direction_output(EFIKAMX_RESET, 0); |
| } |
| |
| static void __init mx51_efikamx_init(void) |
| { |
| mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, |
| ARRAY_SIZE(mx51efikamx_pads)); |
| efika_board_common_init(); |
| |
| mx51_efikamx_board_id(); |
| |
| /* on < 1.2 boards both SD controllers are used */ |
| if (system_rev < 0x12) { |
| imx51_add_sdhci_esdhc_imx(1, NULL); |
| mx51_efikamx_leds[2].default_trigger = "mmc1"; |
| } |
| |
| platform_device_register(&mx51_efikamx_leds_device); |
| imx51_add_gpio_keys(&mx51_efikamx_powerkey_data); |
| |
| if (system_rev == 0x11) { |
| gpio_request(EFIKAMX_RESET1_1, "reset"); |
| gpio_direction_output(EFIKAMX_RESET1_1, 1); |
| } else { |
| gpio_request(EFIKAMX_RESET, "reset"); |
| gpio_direction_output(EFIKAMX_RESET, 1); |
| } |
| } |
| |
| static void __init mx51_efikamx_timer_init(void) |
| { |
| mx51_clocks_init(32768, 24000000, 22579200, 24576000); |
| } |
| |
| static struct sys_timer mx51_efikamx_timer = { |
| .init = mx51_efikamx_timer_init, |
| }; |
| |
| MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop") |
| /* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */ |
| .boot_params = MX51_PHYS_OFFSET + 0x100, |
| .map_io = mx51_map_io, |
| .init_early = imx51_init_early, |
| .init_irq = mx51_init_irq, |
| .timer = &mx51_efikamx_timer, |
| .init_machine = mx51_efikamx_init, |
| MACHINE_END |