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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>
This commit is contained in:
GuanXuetao
parent
70fac51fea
commit
fa7499ef77
@ -231,6 +231,31 @@ config PUV3_RTC
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tristate "PKUnity v3 RTC Support"
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depends on !ARCH_FPGA
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if PUV3_NB0916
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menu "PKUnity NetBook-0916 Features"
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config I2C_BATTERY_BQ27200
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tristate "I2C Battery BQ27200 Support"
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select PUV3_I2C
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select POWER_SUPPLY
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select BATTERY_BQ27x00
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config I2C_EEPROM_AT24
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tristate "I2C EEPROMs AT24 support"
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select PUV3_I2C
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select MISC_DEVICES
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select EEPROM_AT24
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config LCD_BACKLIGHT
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tristate "LCD Backlight support"
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select BACKLIGHT_LCD_SUPPORT
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select BACKLIGHT_PWM
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endmenu
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endif
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endif
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source "drivers/Kconfig"
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270
arch/unicore32/kernel/puv3-core.c
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270
arch/unicore32/kernel/puv3-core.c
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@ -0,0 +1,270 @@
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/*
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* linux/arch/unicore32/kernel/puv3-core.c
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
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* Copyright (C) 2001-2010 Guan Xuetao
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/sysdev.h>
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#include <linux/amba/bus.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/cnt32_to_63.h>
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#include <linux/usb/musb.h>
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#include <asm/irq.h>
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#include <mach/hardware.h>
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#include <mach/pm.h>
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/*
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* This is the PKUnity sched_clock implementation. This has
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* a resolution of 271ns, and a maximum value of 32025597s (370 days).
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*
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* The return value is guaranteed to be monotonic in that range as
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* long as there is always less than 582 seconds between successive
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* calls to this function.
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*
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* ( * 1E9 / CLOCK_TICK_RATE ) -> about 2235/32
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*/
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unsigned long long sched_clock(void)
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{
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unsigned long long v = cnt32_to_63(OST_OSCR);
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/* original conservative method, but overflow frequently
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* v *= NSEC_PER_SEC >> 12;
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* do_div(v, CLOCK_TICK_RATE >> 12);
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*/
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v = ((v & 0x7fffffffffffffffULL) * 2235) >> 5;
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return v;
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}
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static struct resource puv3_usb_resources[] = {
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/* order is significant! */
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{
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.start = PKUNITY_USB_BASE,
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.end = PKUNITY_USB_BASE + 0x3ff,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_USB,
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.flags = IORESOURCE_IRQ,
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}, {
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.start = IRQ_USB,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct musb_hdrc_config puv3_usb_config[] = {
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{
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.num_eps = 16,
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.multipoint = 1,
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#ifdef CONFIG_USB_INVENTRA_DMA
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.dma = 1,
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.dma_channels = 8,
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#endif
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},
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};
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static struct musb_hdrc_platform_data puv3_usb_plat = {
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.mode = MUSB_HOST,
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.min_power = 100,
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.clock = 0,
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.config = puv3_usb_config,
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};
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static struct resource puv3_mmc_resources[] = {
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[0] = {
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.start = PKUNITY_SDC_BASE,
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.end = PKUNITY_SDC_BASE + 0xfff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_SDC,
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.end = IRQ_SDC,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource puv3_rtc_resources[] = {
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[0] = {
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.start = PKUNITY_RTC_BASE,
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.end = PKUNITY_RTC_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_RTCAlarm,
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.end = IRQ_RTCAlarm,
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.start = IRQ_RTC,
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.end = IRQ_RTC,
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.flags = IORESOURCE_IRQ
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}
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};
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static struct resource puv3_pwm_resources[] = {
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[0] = {
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.start = PKUNITY_OST_BASE + 0x80,
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.end = PKUNITY_OST_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct resource puv3_uart0_resources[] = {
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[0] = {
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.start = PKUNITY_UART0_BASE,
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.end = PKUNITY_UART0_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_UART0,
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.end = IRQ_UART0,
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.flags = IORESOURCE_IRQ
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}
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};
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static struct resource puv3_uart1_resources[] = {
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[0] = {
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.start = PKUNITY_UART1_BASE,
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.end = PKUNITY_UART1_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_UART1,
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.end = IRQ_UART1,
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.flags = IORESOURCE_IRQ
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}
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};
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static struct resource puv3_umal_resources[] = {
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[0] = {
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.start = PKUNITY_UMAL_BASE,
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.end = PKUNITY_UMAL_BASE + 0x1fff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_UMAL,
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.end = IRQ_UMAL,
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.flags = IORESOURCE_IRQ
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}
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};
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#ifdef CONFIG_PUV3_PM
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#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
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#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
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/*
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* List of global PXA peripheral registers to preserve.
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* More ones like CP and general purpose register values are preserved
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* with the stack pointer in sleep.S.
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*/
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enum {
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SLEEP_SAVE_PM_PLLDDRCFG,
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SLEEP_SAVE_COUNT
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};
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static void puv3_cpu_pm_save(unsigned long *sleep_save)
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{
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/* SAVE(PM_PLLDDRCFG); */
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}
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static void puv3_cpu_pm_restore(unsigned long *sleep_save)
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{
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/* RESTORE(PM_PLLDDRCFG); */
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}
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static int puv3_cpu_pm_prepare(void)
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{
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/* set resume return address */
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PM_DIVCFG = virt_to_phys(puv3_cpu_resume);
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return 0;
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}
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static void puv3_cpu_pm_enter(suspend_state_t state)
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{
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/* Clear reset status */
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RESETC_RSSR = RESETC_RSSR_HWR | RESETC_RSSR_WDR
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| RESETC_RSSR_SMR | RESETC_RSSR_SWR;
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switch (state) {
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/* case PM_SUSPEND_ON:
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puv3_cpu_idle();
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break; */
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case PM_SUSPEND_MEM:
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puv3_cpu_pm_prepare();
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puv3_cpu_suspend(PM_PMCR_SFB);
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break;
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}
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}
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static int puv3_cpu_pm_valid(suspend_state_t state)
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{
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return state == PM_SUSPEND_MEM;
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}
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static void puv3_cpu_pm_finish(void)
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{
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/* ensure not to come back here if it wasn't intended */
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/* PSPR = 0; */
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}
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static struct puv3_cpu_pm_fns puv3_cpu_pm_fnss = {
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.save_count = SLEEP_SAVE_COUNT,
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.valid = puv3_cpu_pm_valid,
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.save = puv3_cpu_pm_save,
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.restore = puv3_cpu_pm_restore,
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.enter = puv3_cpu_pm_enter,
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.prepare = puv3_cpu_pm_prepare,
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.finish = puv3_cpu_pm_finish,
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};
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static void __init puv3_init_pm(void)
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{
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puv3_cpu_pm_fns = &puv3_cpu_pm_fnss;
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}
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#else
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static inline void puv3_init_pm(void) {}
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#endif
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void puv3_ps2_init(void)
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{
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struct clk *bclk32;
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bclk32 = clk_get(NULL, "BUS32_CLK");
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PS2_CNT = clk_get_rate(bclk32) / 200000; /* should > 5us */
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}
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void __init puv3_core_init(void)
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{
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puv3_init_pm();
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puv3_ps2_init();
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platform_device_register_simple("PKUnity-v3-RTC", -1,
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puv3_rtc_resources, ARRAY_SIZE(puv3_rtc_resources));
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platform_device_register_simple("PKUnity-v3-UMAL", -1,
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puv3_umal_resources, ARRAY_SIZE(puv3_umal_resources));
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platform_device_register_simple("PKUnity-v3-MMC", -1,
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puv3_mmc_resources, ARRAY_SIZE(puv3_mmc_resources));
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platform_device_register_simple("PKUnity-v3-PWM", -1,
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puv3_pwm_resources, ARRAY_SIZE(puv3_pwm_resources));
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platform_device_register_simple("PKUnity-v3-UART", 0,
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puv3_uart0_resources, ARRAY_SIZE(puv3_uart0_resources));
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platform_device_register_simple("PKUnity-v3-UART", 1,
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puv3_uart1_resources, ARRAY_SIZE(puv3_uart1_resources));
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platform_device_register_simple("PKUnity-v3-AC97", -1, NULL, 0);
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platform_device_register_resndata(&platform_bus, "musb_hdrc", -1,
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puv3_usb_resources, ARRAY_SIZE(puv3_usb_resources),
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&puv3_usb_plat, sizeof(puv3_usb_plat));
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}
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145
arch/unicore32/kernel/puv3-nb0916.c
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145
arch/unicore32/kernel/puv3-nb0916.c
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@ -0,0 +1,145 @@
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/*
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* linux/arch/unicore32/kernel/puv3-nb0916.c
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
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* Copyright (C) 2001-2010 Guan Xuetao
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/sysdev.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/io.h>
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#include <linux/reboot.h>
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/pwm_backlight.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <mach/hardware.h>
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static struct physmap_flash_data physmap_flash_data = {
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.width = 1,
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};
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static struct resource physmap_flash_resource = {
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.start = 0xFFF80000,
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.end = 0xFFFFFFFF,
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.flags = IORESOURCE_MEM,
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};
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static struct resource puv3_i2c_resources[] = {
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[0] = {
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.start = PKUNITY_I2C_BASE,
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.end = PKUNITY_I2C_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_I2C,
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.end = IRQ_I2C,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_pwm_backlight_data nb0916_backlight_data = {
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.pwm_id = 0,
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.max_brightness = 100,
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.dft_brightness = 100,
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.pwm_period_ns = 70 * 1024,
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};
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static struct gpio_keys_button nb0916_gpio_keys[] = {
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{
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.type = EV_KEY,
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.code = KEY_POWER,
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.gpio = GPI_SOFF_REQ,
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.desc = "Power Button",
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.wakeup = 1,
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.active_low = 1,
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},
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{
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.type = EV_KEY,
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.code = BTN_TOUCH,
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.gpio = GPI_BTN_TOUCH,
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.desc = "Touchpad Button",
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.wakeup = 1,
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.active_low = 1,
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},
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};
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static struct gpio_keys_platform_data nb0916_gpio_button_data = {
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.buttons = nb0916_gpio_keys,
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.nbuttons = ARRAY_SIZE(nb0916_gpio_keys),
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};
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static irqreturn_t nb0916_lcdcaseoff_handler(int irq, void *dev_id)
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{
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if (gpio_get_value(GPI_LCD_CASE_OFF))
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gpio_set_value(GPO_LCD_EN, 1);
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else
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gpio_set_value(GPO_LCD_EN, 0);
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return IRQ_HANDLED;
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}
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static irqreturn_t nb0916_overheat_handler(int irq, void *dev_id)
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{
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machine_halt();
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/* SYSTEM HALT, NO RETURN */
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return IRQ_HANDLED;
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}
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static struct i2c_board_info __initdata puv3_i2c_devices[] = {
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{ I2C_BOARD_INFO("lm75", I2C_TAR_THERMAL), },
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{ I2C_BOARD_INFO("bq27200", I2C_TAR_PWIC), },
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{ I2C_BOARD_INFO("24c02", I2C_TAR_EEPROM), },
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};
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int __init mach_nb0916_init(void)
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{
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i2c_register_board_info(0, puv3_i2c_devices,
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ARRAY_SIZE(puv3_i2c_devices));
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platform_device_register_simple("PKUnity-v3-I2C", -1,
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puv3_i2c_resources, ARRAY_SIZE(puv3_i2c_resources));
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platform_device_register_data(&platform_bus, "pwm-backlight", -1,
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&nb0916_backlight_data, sizeof(nb0916_backlight_data));
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platform_device_register_data(&platform_bus, "gpio-keys", -1,
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&nb0916_gpio_button_data, sizeof(nb0916_gpio_button_data));
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platform_device_register_resndata(&platform_bus, "physmap-flash", -1,
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&physmap_flash_resource, 1,
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&physmap_flash_data, sizeof(physmap_flash_data));
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if (request_irq(gpio_to_irq(GPI_LCD_CASE_OFF),
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&nb0916_lcdcaseoff_handler,
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IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"NB0916 lcd case off", NULL) < 0) {
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printk(KERN_DEBUG "LCD-Case-OFF IRQ %d not available\n",
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gpio_to_irq(GPI_LCD_CASE_OFF));
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}
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if (request_irq(gpio_to_irq(GPI_OTP_INT), &nb0916_overheat_handler,
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IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"NB0916 overheating protection", NULL) < 0) {
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printk(KERN_DEBUG "Overheating Protection IRQ %d not available\n",
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gpio_to_irq(GPI_OTP_INT));
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}
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return 0;
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}
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subsys_initcall_sync(mach_nb0916_init);
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