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Message-ID: <000001cb5c13$41f1f0e0$c5d5d2a0$@blueyonder.co.uk>
Date: Fri, 24 Sep 2010 19:06:46 +0100
From: "Ash Hughes" <ashley.hughes@...eyonder.co.uk>
To: <kernel@...tstofly.org>, <nico@...xnic.net>,
<linux@....linux.org.uk>
Cc: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/1] ARM Orion: added Buffalo LS-CHL support
From: Ash Hughes <ashley.hughes@...eyonder.co.uk>
Adds support for Buffalo Linkstation Live v3 (LS-CHL) NAS drives.
Signed-off-by: Ash Hughes <ashley.hughes@...eyonder.co.uk>
---
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 <ashley.hughes@...eyonder.co.uk>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mv643xx_eth.h>
+#include <linux/leds.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/i2c.h>
+#include <linux/serial_reg.h>
+#include <linux/ata_platform.h>
+#include <asm/mach-types.h>
+#include <asm/gpio.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/pci.h>
+#include "common.h"
+#include "mpp.h"
+#include "include/mach/system.h"
+#include <asm/uaccess.h>
+
+/*****************************************************************************
+ * 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 <ashley.hughes@...eyonder.co.uk> */
+ .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
--
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