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-rw-r--r--arch/unicore32/Kconfig25
-rw-r--r--arch/unicore32/kernel/puv3-core.c270
-rw-r--r--arch/unicore32/kernel/puv3-nb0916.c145
3 files changed, 440 insertions, 0 deletions
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index cc6a832..90835c9 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -231,6 +231,31 @@ config PUV3_RTC
tristate "PKUnity v3 RTC Support"
depends on !ARCH_FPGA
+if PUV3_NB0916
+
+menu "PKUnity NetBook-0916 Features"
+
+config I2C_BATTERY_BQ27200
+ tristate "I2C Battery BQ27200 Support"
+ select PUV3_I2C
+ select POWER_SUPPLY
+ select BATTERY_BQ27x00
+
+config I2C_EEPROM_AT24
+ tristate "I2C EEPROMs AT24 support"
+ select PUV3_I2C
+ select MISC_DEVICES
+ select EEPROM_AT24
+
+config LCD_BACKLIGHT
+ tristate "LCD Backlight support"
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_PWM
+
+endmenu
+
+endif
+
endif
source "drivers/Kconfig"
diff --git a/arch/unicore32/kernel/puv3-core.c b/arch/unicore32/kernel/puv3-core.c
new file mode 100644
index 0000000..26cc52b
--- /dev/null
+++ b/arch/unicore32/kernel/puv3-core.c
@@ -0,0 +1,270 @@
+/*
+ * linux/arch/unicore32/kernel/puv3-core.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/amba/bus.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/cnt32_to_63.h>
+#include <linux/usb/musb.h>
+
+#include <asm/irq.h>
+#include <mach/hardware.h>
+#include <mach/pm.h>
+
+/*
+ * This is the PKUnity sched_clock implementation. This has
+ * a resolution of 271ns, and a maximum value of 32025597s (370 days).
+ *
+ * The return value is guaranteed to be monotonic in that range as
+ * long as there is always less than 582 seconds between successive
+ * calls to this function.
+ *
+ * ( * 1E9 / CLOCK_TICK_RATE ) -> about 2235/32
+ */
+unsigned long long sched_clock(void)
+{
+ unsigned long long v = cnt32_to_63(OST_OSCR);
+
+ /* original conservative method, but overflow frequently
+ * v *= NSEC_PER_SEC >> 12;
+ * do_div(v, CLOCK_TICK_RATE >> 12);
+ */
+ v = ((v & 0x7fffffffffffffffULL) * 2235) >> 5;
+
+ return v;
+}
+
+static struct resource puv3_usb_resources[] = {
+ /* order is significant! */
+ {
+ .start = PKUNITY_USB_BASE,
+ .end = PKUNITY_USB_BASE + 0x3ff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = IRQ_USB,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ .start = IRQ_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct musb_hdrc_config puv3_usb_config[] = {
+ {
+ .num_eps = 16,
+ .multipoint = 1,
+#ifdef CONFIG_USB_INVENTRA_DMA
+ .dma = 1,
+ .dma_channels = 8,
+#endif
+ },
+};
+
+static struct musb_hdrc_platform_data puv3_usb_plat = {
+ .mode = MUSB_HOST,
+ .min_power = 100,
+ .clock = 0,
+ .config = puv3_usb_config,
+};
+
+static struct resource puv3_mmc_resources[] = {
+ [0] = {
+ .start = PKUNITY_SDC_BASE,
+ .end = PKUNITY_SDC_BASE + 0xfff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_SDC,
+ .end = IRQ_SDC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource puv3_rtc_resources[] = {
+ [0] = {
+ .start = PKUNITY_RTC_BASE,
+ .end = PKUNITY_RTC_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_RTCAlarm,
+ .end = IRQ_RTCAlarm,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = IRQ_RTC,
+ .end = IRQ_RTC,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct resource puv3_pwm_resources[] = {
+ [0] = {
+ .start = PKUNITY_OST_BASE + 0x80,
+ .end = PKUNITY_OST_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct resource puv3_uart0_resources[] = {
+ [0] = {
+ .start = PKUNITY_UART0_BASE,
+ .end = PKUNITY_UART0_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_UART0,
+ .end = IRQ_UART0,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct resource puv3_uart1_resources[] = {
+ [0] = {
+ .start = PKUNITY_UART1_BASE,
+ .end = PKUNITY_UART1_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_UART1,
+ .end = IRQ_UART1,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct resource puv3_umal_resources[] = {
+ [0] = {
+ .start = PKUNITY_UMAL_BASE,
+ .end = PKUNITY_UMAL_BASE + 0x1fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_UMAL,
+ .end = IRQ_UMAL,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+#ifdef CONFIG_PUV3_PM
+
+#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
+#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
+
+/*
+ * List of global PXA peripheral registers to preserve.
+ * More ones like CP and general purpose register values are preserved
+ * with the stack pointer in sleep.S.
+ */
+enum {
+ SLEEP_SAVE_PM_PLLDDRCFG,
+ SLEEP_SAVE_COUNT
+};
+
+
+static void puv3_cpu_pm_save(unsigned long *sleep_save)
+{
+/* SAVE(PM_PLLDDRCFG); */
+}
+
+static void puv3_cpu_pm_restore(unsigned long *sleep_save)
+{
+/* RESTORE(PM_PLLDDRCFG); */
+}
+
+static int puv3_cpu_pm_prepare(void)
+{
+ /* set resume return address */
+ PM_DIVCFG = virt_to_phys(puv3_cpu_resume);
+ return 0;
+}
+
+static void puv3_cpu_pm_enter(suspend_state_t state)
+{
+ /* Clear reset status */
+ RESETC_RSSR = RESETC_RSSR_HWR | RESETC_RSSR_WDR
+ | RESETC_RSSR_SMR | RESETC_RSSR_SWR;
+
+ switch (state) {
+/* case PM_SUSPEND_ON:
+ puv3_cpu_idle();
+ break; */
+ case PM_SUSPEND_MEM:
+ puv3_cpu_pm_prepare();
+ puv3_cpu_suspend(PM_PMCR_SFB);
+ break;
+ }
+}
+
+static int puv3_cpu_pm_valid(suspend_state_t state)
+{
+ return state == PM_SUSPEND_MEM;
+}
+
+static void puv3_cpu_pm_finish(void)
+{
+ /* ensure not to come back here if it wasn't intended */
+ /* PSPR = 0; */
+}
+
+static struct puv3_cpu_pm_fns puv3_cpu_pm_fnss = {
+ .save_count = SLEEP_SAVE_COUNT,
+ .valid = puv3_cpu_pm_valid,
+ .save = puv3_cpu_pm_save,
+ .restore = puv3_cpu_pm_restore,
+ .enter = puv3_cpu_pm_enter,
+ .prepare = puv3_cpu_pm_prepare,
+ .finish = puv3_cpu_pm_finish,
+};
+
+static void __init puv3_init_pm(void)
+{
+ puv3_cpu_pm_fns = &puv3_cpu_pm_fnss;
+}
+#else
+static inline void puv3_init_pm(void) {}
+#endif
+
+void puv3_ps2_init(void)
+{
+ struct clk *bclk32;
+
+ bclk32 = clk_get(NULL, "BUS32_CLK");
+ PS2_CNT = clk_get_rate(bclk32) / 200000; /* should > 5us */
+}
+
+void __init puv3_core_init(void)
+{
+ puv3_init_pm();
+ puv3_ps2_init();
+
+ platform_device_register_simple("PKUnity-v3-RTC", -1,
+ puv3_rtc_resources, ARRAY_SIZE(puv3_rtc_resources));
+ platform_device_register_simple("PKUnity-v3-UMAL", -1,
+ puv3_umal_resources, ARRAY_SIZE(puv3_umal_resources));
+ platform_device_register_simple("PKUnity-v3-MMC", -1,
+ puv3_mmc_resources, ARRAY_SIZE(puv3_mmc_resources));
+ platform_device_register_simple("PKUnity-v3-PWM", -1,
+ puv3_pwm_resources, ARRAY_SIZE(puv3_pwm_resources));
+ platform_device_register_simple("PKUnity-v3-UART", 0,
+ puv3_uart0_resources, ARRAY_SIZE(puv3_uart0_resources));
+ platform_device_register_simple("PKUnity-v3-UART", 1,
+ puv3_uart1_resources, ARRAY_SIZE(puv3_uart1_resources));
+ platform_device_register_simple("PKUnity-v3-AC97", -1, NULL, 0);
+ platform_device_register_resndata(&platform_bus, "musb_hdrc", -1,
+ puv3_usb_resources, ARRAY_SIZE(puv3_usb_resources),
+ &puv3_usb_plat, sizeof(puv3_usb_plat));
+}
+
diff --git a/arch/unicore32/kernel/puv3-nb0916.c b/arch/unicore32/kernel/puv3-nb0916.c
new file mode 100644
index 0000000..a78e604
--- /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);
generated by cgit v1.1 at 2024-11-16 18:48:08 +0000