From mboxrd@z Thu Jan 1 00:00:00 1970 From: ashley.hughes@blueyonder.co.uk (Ash Hughes) Date: Fri, 24 Sep 2010 19:06:46 +0100 Subject: [PATCH 1/1] ARM Orion: added Buffalo LS-CHL support Message-ID: <000001cb5c13$41f1f0e0$c5d5d2a0$@blueyonder.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Ash Hughes Adds support for Buffalo Linkstation Live v3 (LS-CHL) NAS drives. Signed-off-by: Ash Hughes --- Code has been in use for several months: http://forum.buffalo.nas-central.org/viewtopic.php?f=18&t=13566 diff -urBN linux-2.6.34-vanilla/arch/arm/mach-orion5x/Kconfig linux-2.6.34/arch/arm/mach-orion5x/Kconfig --- linux-2.6.34-vanilla/arch/arm/mach-orion5x/Kconfig 2010-05-16 22:17:36.000000000 +0100 +++ linux-2.6.34/arch/arm/mach-orion5x/Kconfig 2010-06-11 13:46:45.665614309 +0100 @@ -50,6 +50,13 @@ Buffalo Linkstation Pro/Live platform. Both v1 and v2 devices are supported. +config MACH_LINKSTATION_LSCHL + bool "Buffalo Linkstation Live v3 (LS-CHL)" + select I2C_BOARDINFO + help + Say 'Y' here if you want your kernel to support the + Buffalo Linkstation Live v3 (LS-CHL) platform. + config MACH_LINKSTATION_MINI bool "Buffalo Linkstation Mini" select I2C_BOARDINFO diff -urBN linux-2.6.34-vanilla/arch/arm/mach-orion5x/ls-chl-setup.c linux-2.6.34/arch/arm/mach-orion5x/ls-chl-setup.c --- linux-2.6.34-vanilla/arch/arm/mach-orion5x/ls-chl-setup.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.34/arch/arm/mach-orion5x/ls-chl-setup.c 2010-09-24 03:56:24.432077623 +0100 @@ -0,0 +1,449 @@ +/* + * arch/arm/mach-orion5x/ls-chl-setup.c + * + * Maintainer: Ash Hughes + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "common.h" +#include "mpp.h" +#include "include/mach/system.h" +#include + +/***************************************************************************** + * Linkstation LS-CHL Info + ****************************************************************************/ + +/* + * 256K NOR flash Device bus boot chip select + */ + +#define LSCHL_NOR_BOOT_BASE 0xf4000000 +#define LSCHL_NOR_BOOT_SIZE SZ_256K + +/***************************************************************************** + * 256KB NOR Flash on BOOT Device + ****************************************************************************/ + +static struct physmap_flash_data lschl_nor_flash_data = { + .width = 1, +}; + +static struct resource lschl_nor_flash_resource = { + .flags = IORESOURCE_MEM, + .start = LSCHL_NOR_BOOT_BASE, + .end = LSCHL_NOR_BOOT_BASE + LSCHL_NOR_BOOT_SIZE - 1, +}; + +static struct platform_device lschl_nor_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &lschl_nor_flash_data, + }, + .num_resources = 1, + .resource = &lschl_nor_flash_resource, +}; + +/***************************************************************************** + * Ethernet + ****************************************************************************/ + +static struct mv643xx_eth_platform_data lschl_eth_data = { + .phy_addr = 8, +}; + +/***************************************************************************** + * RTC 5C372a on I2C bus + ****************************************************************************/ + +static struct i2c_board_info __initdata lschl_i2c_rtc = { + I2C_BOARD_INFO("rs5c372a", 0x32), +}; + +/***************************************************************************** + * LEDs attached to GPIO + ****************************************************************************/ + +#define LSCHL_GPIO_LED_ALARM 2 +#define LSCHL_GPIO_LED_INFO 3 +#define LSCHL_GPIO_LED_FUNC 17 +#define LSCHL_GPIO_LED_PWR 0 + +static struct gpio_led lschl_led_pins[] = { + { + .name = "alarm:red", + .gpio = LSCHL_GPIO_LED_ALARM, + .active_low = 1, + }, { + .name = "info:amber", + .gpio = LSCHL_GPIO_LED_INFO, + .active_low = 1, + }, { + .name = "func:blue:top", + .gpio = LSCHL_GPIO_LED_FUNC, + .active_low = 1, + }, { + .name = "power:blue:bottom", + .gpio = LSCHL_GPIO_LED_PWR, + }, +}; + +static struct gpio_led_platform_data lschl_led_data = { + .leds = lschl_led_pins, + .num_leds = ARRAY_SIZE(lschl_led_pins), +}; + +static struct platform_device lschl_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &lschl_led_data, + }, +}; + +/***************************************************************************** + * SATA + ****************************************************************************/ +static struct mv_sata_platform_data lschl_sata_data = { + .n_ports = 2, +}; + + +/***************************************************************************** + * LS-CHL specific power off method: reboot + ****************************************************************************/ +/* + * On the LS-CHL, the shutdown process is following: + * - Userland monitors key events until the power switch goes to off position + * - The board reboots + * - U-boot starts and goes into an idle mode waiting for the user + * to move the switch to ON position + * + */ + +static void lschl_power_off(void) +{ + arch_reset(0, NULL); +} + + +/***************************************************************************** + * General Setup + ****************************************************************************/ +#define LSCHL_GPIO_USB_POWER 9 +#define LSCHL_GPIO_AUTO_POWER 17 +#define LSCHL_GPIO_POWER 18 + +/**************************************************************************** + * GPIO Attached Keys + ****************************************************************************/ +#define LSCHL_GPIO_KEY_FUNC 15 +#define LSCHL_GPIO_KEY_POWER 8 +#define LSCHL_GPIO_KEY_AUTOPOWER 10 +#define LSCHL_SW_POWER 0x00 +#define LSCHL_SW_AUTOPOWER 0x01 +#define LSCHL_SW_FUNC 0x02 + +static struct gpio_keys_button lschl_buttons[] = { + { + .type = EV_SW, + .code = LSCHL_SW_POWER, + .gpio = LSCHL_GPIO_KEY_POWER, + .desc = "Power-on Switch", + .active_low = 1, + }, { + .type = EV_SW, + .code = LSCHL_SW_AUTOPOWER, + .gpio = LSCHL_GPIO_KEY_AUTOPOWER, + .desc = "Power-auto Switch", + .active_low = 1, + }, { + .type = EV_SW, + .code = LSCHL_SW_FUNC, + .gpio = LSCHL_GPIO_KEY_FUNC, + .desc = "Function Switch", + .active_low = 1, + }, +}; + +static struct gpio_keys_platform_data lschl_button_data = { + .buttons = lschl_buttons, + .nbuttons = ARRAY_SIZE(lschl_buttons), +}; + +static struct platform_device lschl_button_device = { + .name = "gpio-keys", + .id = -1, + .num_resources = 0, + .dev = { + .platform_data = &lschl_button_data, + }, +}; + +#define LSCHL_GPIO_HDD_POWER 1 + +static struct orion5x_mpp_mode lschl_mpp_modes[] __initdata = { + { 0, MPP_GPIO }, /* LED POWER */ + { 1, MPP_GPIO }, /* HDD POWER */ + { 2, MPP_GPIO }, /* LED ALARM */ + { 3, MPP_GPIO }, /* LED INFO */ + { 4, MPP_UNUSED }, + { 5, MPP_UNUSED }, + { 6, MPP_GPIO }, /* FAN LOCK */ + { 7, MPP_GPIO }, /* SW INIT */ + { 8, MPP_GPIO }, /* SW POWER */ + { 9, MPP_GPIO }, /* USB POWER */ + { 10, MPP_GPIO }, /* SW AUTO POWER */ + { 11, MPP_UNUSED }, + { 12, MPP_UNUSED }, + { 13, MPP_UNUSED }, + { 14, MPP_GPIO }, /* FAN HIGH */ + { 15, MPP_GPIO }, /* SW FUNC */ + { 16, MPP_GPIO }, /* FAN LOW */ + { 17, MPP_GPIO }, /* LED FUNC */ + { 18, MPP_UNUSED }, + { 19, MPP_UNUSED }, + { -1 }, +}; + + +#define LSCHL_GPIO_FAN_LOW 16 +#define LSCHL_GPIO_FAN_HIGH 14 +#define LSCHL_GPIO_FAN_LOCK 6 + +#define BUFFALO_GPIO_FAN_STOP 0 +#define BUFFALO_GPIO_FAN_SLOW 1 +#define BUFFALO_GPIO_FAN_FAST 2 +#define BUFFALO_GPIO_FAN_FULL 3 + +#define BuffaloGpio_FanStop() FanControlWrite(BUFFALO_GPIO_FAN_STOP) +#define BuffaloGpio_FanSlow() FanControlWrite(BUFFALO_GPIO_FAN_SLOW) +#define BuffaloGpio_FanFast() FanControlWrite(BUFFALO_GPIO_FAN_FAST) +#define BuffaloGpio_FanFull() FanControlWrite(BUFFALO_GPIO_FAN_FULL) + + +void +FanControlWrite(unsigned int value) +{ + switch (value) { + case BUFFALO_GPIO_FAN_STOP: + gpio_set_value(LSCHL_GPIO_FAN_LOW, 1); + gpio_set_value(LSCHL_GPIO_FAN_HIGH, 1); + break; + case BUFFALO_GPIO_FAN_SLOW: + gpio_set_value(LSCHL_GPIO_FAN_LOW, 1); + gpio_set_value(LSCHL_GPIO_FAN_HIGH, 0); + break; + case BUFFALO_GPIO_FAN_FAST: + gpio_set_value(LSCHL_GPIO_FAN_LOW, 0); + gpio_set_value(LSCHL_GPIO_FAN_HIGH, 1); + break; + case BUFFALO_GPIO_FAN_FULL: + gpio_set_value(LSCHL_GPIO_FAN_LOW, 0); + gpio_set_value(LSCHL_GPIO_FAN_HIGH, 0); + break; + default: + break; + } /* end of switch */ +} + +unsigned int +BuffaloGpio_FanControlRead(void) +{ + + int fan_low = gpio_get_value(LSCHL_GPIO_FAN_LOW); + int fan_high = gpio_get_value(LSCHL_GPIO_FAN_HIGH); + + if (!fan_low && !fan_high) + return BUFFALO_GPIO_FAN_FULL; + else if (!fan_low && fan_high) + return BUFFALO_GPIO_FAN_FAST; + else if (fan_low && !fan_high) + return BUFFALO_GPIO_FAN_SLOW; + else if (fan_low && fan_high) + return BUFFALO_GPIO_FAN_STOP; + return 0; +} + +static int +FanStatusRead(char *pg, char **st, off_t off, int length, int *eof, void *data) +{ + + int len = 0; + off_t begin = 0; + + int PinStat = gpio_get_value(LSCHL_GPIO_FAN_LOCK); + + if (!PinStat) + len = sprintf(pg, "Fine\n"); + else + len = sprintf(pg, "Stop\n"); + *st = pg + (off - begin); + len -= (off - begin); + if (len > length) + len = length; + return len; +} + + + +static int +FanStatusWrite(struct file *fp, const char *buf, unsigned long cnt, void *d) { + return cnt; +} + +static int +FanCtlWrite(struct file *filep, const char *buf, unsigned long cnt, void *data) +{ + int len, ret; + char *ptr, tState[8]; + + if (cnt > 8) + len = 8; + else + len = cnt; + + ret = copy_from_user(tState, buf, len); + if (ret < 0) { + printk(KERN_ERR "%s: Setting fan speed failed\n", "ls-chl"); + return -EFAULT; + } + + ptr = strrchr(tState, '\n'); + if (ptr) + *ptr = '\0'; + + if (strncmp(tState, "stop", strlen("stop")) == 0) + BuffaloGpio_FanStop(); + else if (strncmp(tState, "slow", strlen("slow")) == 0) + BuffaloGpio_FanSlow(); + else if (strncmp(tState, "fast", strlen("fast")) == 0) + BuffaloGpio_FanFast(); + else if (strncmp(tState, "full", strlen("full")) == 0) + BuffaloGpio_FanFull(); + return cnt; +} + +static int +FanCtlRead(char *pg, char **start, off_t off, int length, int *eof, void *data) +{ + int len = 0; + off_t begin = 0; + + unsigned int fan_status = BuffaloGpio_FanControlRead(); + + switch (fan_status) { + case BUFFALO_GPIO_FAN_STOP: + len += sprintf(pg, "stop\n"); + break; + case BUFFALO_GPIO_FAN_SLOW: + len += sprintf(pg, "slow\n"); + break; + case BUFFALO_GPIO_FAN_FAST: + len += sprintf(pg, "fast\n"); + break; + case BUFFALO_GPIO_FAN_FULL: + len += sprintf(pg, "full\n"); + break; + default: + break; + } /* end of switch */ + + *start = pg + (off - begin); + len -= (off - begin); + if (len > length) + len = length; + return len; +} + + + + +static void __init lschl_init(void) +{ + /* + * Setup basic Orion functions. Need to be called early. + */ + struct proc_dir_entry *pde; + orion5x_init(); + + orion5x_mpp_conf(lschl_mpp_modes); + + /* + * Configure peripherals. + */ + orion5x_ehci0_init(); + orion5x_ehci1_init(); + orion5x_eth_init(&lschl_eth_data); + orion5x_i2c_init(); + orion5x_sata_init(&lschl_sata_data); + orion5x_uart0_init(); + orion5x_xor_init(); + + orion5x_setup_dev_boot_win(LSCHL_NOR_BOOT_BASE, + LSCHL_NOR_BOOT_SIZE); + platform_device_register(&lschl_nor_flash); + + platform_device_register(&lschl_leds); + + platform_device_register(&lschl_button_device); + + i2c_register_board_info(0, &lschl_i2c_rtc, 1); + + pde = proc_mkdir("buffalo", 0); + pde = proc_mkdir("buffalo/gpio", 0); + pde = proc_mkdir("buffalo/gpio/fan", 0); + pde = create_proc_entry("buffalo/gpio/fan/control", 0644, 0); + pde->read_proc = FanCtlRead; + pde->write_proc = FanCtlWrite; + pde = create_proc_entry("buffalo/gpio/fan/lock", 0, 0); + pde->read_proc = FanStatusRead; + pde->write_proc = FanStatusWrite; + + /* slow down fan */ + BuffaloGpio_FanSlow(); + /* usb power on */ + gpio_set_value(LSCHL_GPIO_USB_POWER, 1); + + /* register power-off method */ + pm_power_off = lschl_power_off; + + pr_info("%s: finished\n", __func__); +} + +#ifdef CONFIG_MACH_LINKSTATION_LSCHL +MACHINE_START(LINKSTATION_LSCHL, "Buffalo Linkstation LiveV3 (LS-CHL)") + /* Maintainer: Ash Hughes */ + .phys_io = ORION5X_REGS_PHYS_BASE, + .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC, + .boot_params = 0x00000100, + .init_machine = lschl_init, + .map_io = orion5x_map_io, + .init_irq = orion5x_init_irq, + .timer = &orion5x_timer, + .fixup = tag_fixup_mem32, +MACHINE_END +#endif diff -urBN linux-2.6.34-vanilla/arch/arm/mach-orion5x/Makefile linux-2.6.34/arch/arm/mach-orion5x/Makefile --- linux-2.6.34-vanilla/arch/arm/mach-orion5x/Makefile 2010-05-16 22:17:36.000000000 +0100 +++ linux-2.6.34/arch/arm/mach-orion5x/Makefile 2010-08-18 12:33:02.714982012 +0100 @@ -21,3 +21,4 @@ obj-$(CONFIG_MACH_RD88F5181L_GE) += rd88f5181l-ge-setup.o obj-$(CONFIG_MACH_RD88F5181L_FXO) += rd88f5181l-fxo-setup.o obj-$(CONFIG_MACH_RD88F6183AP_GE) += rd88f6183ap-ge-setup.o +obj-$(CONFIG_MACH_LINKSTATION_LSCHL) += ls-chl-setup.o