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authorGuanXuetao <gxt@mprc.pku.edu.cn>2011-02-26 19:51:18 +0800
committerGuanXuetao <gxt@mprc.pku.edu.cn>2011-03-17 09:19:14 +0800
commitfa7499ef77db8d535e3c609c8064e9ee50c0693c (patch)
tree262a947a5800268a3992147b76baf920dff9beb0 /arch/unicore32/kernel/puv3-nb0916.c
parent70fac51feaf2ca50c84e102e2a2699eb19ef24bd (diff)
unicore32 machine related files: core files
This patch adds machine related core files, also including build infrastructure. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/unicore32/kernel/puv3-nb0916.c')
-rw-r--r--arch/unicore32/kernel/puv3-nb0916.c145
1 files changed, 145 insertions, 0 deletions
diff --git a/arch/unicore32/kernel/puv3-nb0916.c b/arch/unicore32/kernel/puv3-nb0916.c
new file mode 100644
index 00000000000..a78e6042065
--- /dev/null
+++ b/arch/unicore32/kernel/puv3-nb0916.c
@@ -0,0 +1,145 @@
+/*
+ * linux/arch/unicore32/kernel/puv3-nb0916.c
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
+ * Copyright (C) 2001-2010 Guan Xuetao
+ *
+ * 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/init.h>
+#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/io.h>
+#include <linux/reboot.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/pwm_backlight.h>
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+
+#include <mach/hardware.h>
+
+static struct physmap_flash_data physmap_flash_data = {
+ .width = 1,
+};
+
+static struct resource physmap_flash_resource = {
+ .start = 0xFFF80000,
+ .end = 0xFFFFFFFF,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource puv3_i2c_resources[] = {
+ [0] = {
+ .start = PKUNITY_I2C_BASE,
+ .end = PKUNITY_I2C_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_I2C,
+ .end = IRQ_I2C,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_pwm_backlight_data nb0916_backlight_data = {
+ .pwm_id = 0,
+ .max_brightness = 100,
+ .dft_brightness = 100,
+ .pwm_period_ns = 70 * 1024,
+};
+
+static struct gpio_keys_button nb0916_gpio_keys[] = {
+ {
+ .type = EV_KEY,
+ .code = KEY_POWER,
+ .gpio = GPI_SOFF_REQ,
+ .desc = "Power Button",
+ .wakeup = 1,
+ .active_low = 1,
+ },
+ {
+ .type = EV_KEY,
+ .code = BTN_TOUCH,
+ .gpio = GPI_BTN_TOUCH,
+ .desc = "Touchpad Button",
+ .wakeup = 1,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_keys_platform_data nb0916_gpio_button_data = {
+ .buttons = nb0916_gpio_keys,
+ .nbuttons = ARRAY_SIZE(nb0916_gpio_keys),
+};
+
+static irqreturn_t nb0916_lcdcaseoff_handler(int irq, void *dev_id)
+{
+ if (gpio_get_value(GPI_LCD_CASE_OFF))
+ gpio_set_value(GPO_LCD_EN, 1);
+ else
+ gpio_set_value(GPO_LCD_EN, 0);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t nb0916_overheat_handler(int irq, void *dev_id)
+{
+ machine_halt();
+ /* SYSTEM HALT, NO RETURN */
+ return IRQ_HANDLED;
+}
+
+static struct i2c_board_info __initdata puv3_i2c_devices[] = {
+ { I2C_BOARD_INFO("lm75", I2C_TAR_THERMAL), },
+ { I2C_BOARD_INFO("bq27200", I2C_TAR_PWIC), },
+ { I2C_BOARD_INFO("24c02", I2C_TAR_EEPROM), },
+};
+
+int __init mach_nb0916_init(void)
+{
+ i2c_register_board_info(0, puv3_i2c_devices,
+ ARRAY_SIZE(puv3_i2c_devices));
+
+ platform_device_register_simple("PKUnity-v3-I2C", -1,
+ puv3_i2c_resources, ARRAY_SIZE(puv3_i2c_resources));
+
+ platform_device_register_data(&platform_bus, "pwm-backlight", -1,
+ &nb0916_backlight_data, sizeof(nb0916_backlight_data));
+
+ platform_device_register_data(&platform_bus, "gpio-keys", -1,
+ &nb0916_gpio_button_data, sizeof(nb0916_gpio_button_data));
+
+ platform_device_register_resndata(&platform_bus, "physmap-flash", -1,
+ &physmap_flash_resource, 1,
+ &physmap_flash_data, sizeof(physmap_flash_data));
+
+ if (request_irq(gpio_to_irq(GPI_LCD_CASE_OFF),
+ &nb0916_lcdcaseoff_handler,
+ IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "NB0916 lcd case off", NULL) < 0) {
+
+ printk(KERN_DEBUG "LCD-Case-OFF IRQ %d not available\n",
+ gpio_to_irq(GPI_LCD_CASE_OFF));
+ }
+
+ if (request_irq(gpio_to_irq(GPI_OTP_INT), &nb0916_overheat_handler,
+ IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "NB0916 overheating protection", NULL) < 0) {
+
+ printk(KERN_DEBUG "Overheating Protection IRQ %d not available\n",
+ gpio_to_irq(GPI_OTP_INT));
+ }
+
+ return 0;
+}
+
+subsys_initcall_sync(mach_nb0916_init);