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Diffstat (limited to 'arch/arm/mach-imx/mach-mx51_efikamx.c')
-rw-r--r--arch/arm/mach-imx/mach-mx51_efikamx.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-mx51_efikamx.c b/arch/arm/mach-imx/mach-mx51_efikamx.c
new file mode 100644
index 00000000000..3a5ed2dd885
--- /dev/null
+++ b/arch/arm/mach-imx/mach-mx51_efikamx.c
@@ -0,0 +1,296 @@
+/*
+ * 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/spi/flash.h>
+#include <linux/spi/spi.h>
+#include <linux/mfd/mc13892.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/consumer.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/iomux-mx51.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 "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)
+
+#define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13)
+
+#define EFIKAMX_PMIC IMX_GPIO_NR(1, 6)
+
+/* 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,
+
+ /* power off */
+ MX51_PAD_CSI2_VSYNC__GPIO4_13,
+};
+
+/* 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) ? 1 : 0;
+ id |= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1;
+ id |= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 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[] __initdata = {
+ {
+ .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 const struct gpio_led_platform_data
+ mx51_efikamx_leds_data __initconst = {
+ .leds = mx51_efikamx_leds,
+ .num_leds = ARRAY_SIZE(mx51_efikamx_leds),
+};
+
+static struct esdhc_platform_data sd_pdata = {
+ .cd_type = ESDHC_CD_CONTROLLER,
+ .wp_type = ESDHC_WP_CONTROLLER,
+};
+
+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),
+};
+
+static void mx51_efikamx_restart(char mode, const char *cmd)
+{
+ if (system_rev == 0x11)
+ gpio_direction_output(EFIKAMX_RESET1_1, 0);
+ else
+ gpio_direction_output(EFIKAMX_RESET, 0);
+}
+
+static struct regulator *pwgt1, *pwgt2, *coincell;
+
+static void mx51_efikamx_power_off(void)
+{
+ if (!IS_ERR(coincell))
+ regulator_disable(coincell);
+
+ if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
+ regulator_disable(pwgt2);
+ regulator_disable(pwgt1);
+ }
+ gpio_direction_output(EFIKAMX_POWEROFF, 1);
+}
+
+static int __init mx51_efikamx_power_init(void)
+{
+ if (machine_is_mx51_efikamx()) {
+ pwgt1 = regulator_get(NULL, "pwgt1");
+ pwgt2 = regulator_get(NULL, "pwgt2");
+ if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
+ regulator_enable(pwgt1);
+ regulator_enable(pwgt2);
+ }
+ gpio_request(EFIKAMX_POWEROFF, "poweroff");
+ pm_power_off = mx51_efikamx_power_off;
+
+ /* enable coincell charger. maybe need a small power driver ? */
+ coincell = regulator_get(NULL, "coincell");
+ if (!IS_ERR(coincell)) {
+ regulator_set_voltage(coincell, 3000000, 3000000);
+ regulator_enable(coincell);
+ }
+
+ regulator_has_full_constraints();
+ }
+
+ return 0;
+}
+late_initcall(mx51_efikamx_power_init);
+
+static void __init mx51_efikamx_init(void)
+{
+ imx51_soc_init();
+
+ 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(0, NULL);
+ imx51_add_sdhci_esdhc_imx(1, &sd_pdata);
+ mx51_efikamx_leds[2].default_trigger = "mmc1";
+ } else
+ imx51_add_sdhci_esdhc_imx(0, &sd_pdata);
+
+ gpio_led_register_device(-1, &mx51_efikamx_leds_data);
+ imx_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);
+ }
+
+ /*
+ * enable wifi by default only on mx
+ * sb and mx have same wlan pin but the value to enable it are
+ * different :/
+ */
+ gpio_request(EFIKA_WLAN_EN, "wlan_en");
+ gpio_direction_output(EFIKA_WLAN_EN, 0);
+ msleep(10);
+
+ gpio_request(EFIKA_WLAN_RESET, "wlan_rst");
+ gpio_direction_output(EFIKA_WLAN_RESET, 0);
+ msleep(10);
+ gpio_set_value(EFIKA_WLAN_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> */
+ .atag_offset = 0x100,
+ .map_io = mx51_map_io,
+ .init_early = imx51_init_early,
+ .init_irq = mx51_init_irq,
+ .handle_irq = imx51_handle_irq,
+ .timer = &mx51_efikamx_timer,
+ .init_machine = mx51_efikamx_init,
+ .restart = mx51_efikamx_restart,
+MACHINE_END