diff options
-rw-r--r-- | drivers/leds/Kconfig | 22 | ||||
-rw-r--r-- | drivers/leds/Makefile | 2 | ||||
-rw-r--r-- | drivers/leds/leds-clevo-mail.c | 2 | ||||
-rw-r--r-- | drivers/leds/leds-cobalt-qube.c | 2 | ||||
-rw-r--r-- | drivers/leds/leds-cobalt-raq.c | 4 | ||||
-rw-r--r-- | drivers/leds/leds-gpio.c | 2 | ||||
-rw-r--r-- | drivers/leds/leds-pca9532.c | 12 | ||||
-rw-r--r-- | drivers/leds/leds-ss4200.c | 551 | ||||
-rw-r--r-- | drivers/leds/leds-wm831x-status.c | 341 | ||||
-rw-r--r-- | drivers/leds/ledtrig-gpio.c | 32 | ||||
-rw-r--r-- | drivers/macintosh/via-pmu-led.c | 2 | ||||
-rw-r--r-- | include/linux/mfd/wm831x/status.h | 34 |
12 files changed, 975 insertions, 31 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 7c8e7122aaa9..f65f090a57dc 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -150,9 +150,9 @@ config LEDS_LP3944 tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip" depends on LEDS_CLASS && I2C help - This option enables support for LEDs connected to the National - Semiconductor LP3944 Lighting Management Unit (LMU) also known as - Fun Light Chip. + This option enables support for LEDs connected to the National + Semiconductor LP3944 Lighting Management Unit (LMU) also known as + Fun Light Chip. To compile this driver as a module, choose M here: the module will be called leds-lp3944. @@ -195,6 +195,13 @@ config LEDS_PCA955X LED driver chips accessed via the I2C bus. Supported devices include PCA9550, PCA9551, PCA9552, and PCA9553. +config LEDS_WM831X_STATUS + tristate "LED support for status LEDs on WM831x PMICs" + depends on LEDS_CLASS && MFD_WM831X + help + This option enables support for the status LEDs of the WM831x + series of PMICs. + config LEDS_WM8350 tristate "LED Support for WM8350 AudioPlus PMIC" depends on LEDS_CLASS && MFD_WM8350 @@ -229,6 +236,15 @@ config LEDS_BD2802 This option enables support for BD2802GU RGB LED driver chips accessed via the I2C bus. +config LEDS_INTEL_SS4200 + tristate "LED driver for Intel NAS SS4200 series" + depends on LEDS_CLASS && PCI + help + This option enables support for the Intel SS4200 series of + Network Attached Storage servers. You may control the hard + drive or power LEDs on the front panel. Using this driver + can stop the front LED from blinking after startup. + comment "LED Triggers" config LEDS_TRIGGERS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index e8cdcf77a4c3..12b7a20fcfe0 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -26,8 +26,10 @@ obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o obj-$(CONFIG_LEDS_FSG) += leds-fsg.o obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o +obj-$(CONFIG_LEDS_WM831X_STATUS) += leds-wm831x-status.o obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o obj-$(CONFIG_LEDS_PWM) += leds-pwm.o +obj-$(CONFIG_LEDS_INTEL_SS4200) += leds-ss4200.o # LED SPI Drivers obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c index f2242db54016..a498135a4e80 100644 --- a/drivers/leds/leds-clevo-mail.c +++ b/drivers/leds/leds-clevo-mail.c @@ -153,7 +153,7 @@ static struct led_classdev clevo_mail_led = { .flags = LED_CORE_SUSPENDRESUME, }; -static int __init clevo_mail_led_probe(struct platform_device *pdev) +static int __devinit clevo_mail_led_probe(struct platform_device *pdev) { return led_classdev_register(&pdev->dev, &clevo_mail_led); } diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c index 059aa2924b1c..8816806accd2 100644 --- a/drivers/leds/leds-cobalt-qube.c +++ b/drivers/leds/leds-cobalt-qube.c @@ -28,7 +28,7 @@ static void qube_front_led_set(struct led_classdev *led_cdev, } static struct led_classdev qube_front_led = { - .name = "qube-front", + .name = "qube::front", .brightness = LED_FULL, .brightness_set = qube_front_led_set, .default_trigger = "ide-disk", diff --git a/drivers/leds/leds-cobalt-raq.c b/drivers/leds/leds-cobalt-raq.c index 5f1ce810815f..defc212105f3 100644 --- a/drivers/leds/leds-cobalt-raq.c +++ b/drivers/leds/leds-cobalt-raq.c @@ -49,7 +49,7 @@ static void raq_web_led_set(struct led_classdev *led_cdev, } static struct led_classdev raq_web_led = { - .name = "raq-web", + .name = "raq::web", .brightness_set = raq_web_led_set, }; @@ -70,7 +70,7 @@ static void raq_power_off_led_set(struct led_classdev *led_cdev, } static struct led_classdev raq_power_off_led = { - .name = "raq-power-off", + .name = "raq::power-off", .brightness_set = raq_power_off_led_set, .default_trigger = "power-off", }; diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 6b06638eb5b4..7467980b8cf9 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -80,7 +80,7 @@ static int __devinit create_gpio_led(const struct gpio_led *template, /* skip leds that aren't available */ if (!gpio_is_valid(template->gpio)) { - printk(KERN_INFO "Skipping unavilable LED gpio %d (%s)\n", + printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n", template->gpio, template->name); return 0; } diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c index dba8921240f2..708a8017c21d 100644 --- a/drivers/leds/leds-pca9532.c +++ b/drivers/leds/leds-pca9532.c @@ -34,7 +34,7 @@ struct pca9532_data { struct i2c_client *client; struct pca9532_led leds[16]; struct mutex update_lock; - struct input_dev *idev; + struct input_dev *idev; struct work_struct work; u8 pwm[2]; u8 psc[2]; @@ -53,9 +53,9 @@ MODULE_DEVICE_TABLE(i2c, pca9532_id); static struct i2c_driver pca9532_driver = { .driver = { - .name = "pca9532", + .name = "pca9532", }, - .probe = pca9532_probe, + .probe = pca9532_probe, .remove = pca9532_remove, .id_table = pca9532_id, }; @@ -149,7 +149,7 @@ static int pca9532_set_blink(struct led_classdev *led_cdev, if (*delay_on == 0 && *delay_off == 0) { /* led subsystem ask us for a blink rate */ - *delay_on = 1000; + *delay_on = 1000; *delay_off = 1000; } if (*delay_on != *delay_off || *delay_on > 1690 || *delay_on < 6) @@ -227,7 +227,7 @@ static int pca9532_configure(struct i2c_client *client, break; case PCA9532_TYPE_LED: led->state = pled->state; - led->name = pled->name; + led->name = pled->name; led->ldev.name = led->name; led->ldev.brightness = LED_OFF; led->ldev.brightness_set = pca9532_set_brightness; @@ -254,7 +254,7 @@ static int pca9532_configure(struct i2c_client *client, data->idev->name = pled->name; data->idev->phys = "i2c/pca9532"; data->idev->id.bustype = BUS_HOST; - data->idev->id.vendor = 0x001f; + data->idev->id.vendor = 0x001f; data->idev->id.product = 0x0001; data->idev->id.version = 0x0100; data->idev->evbit[0] = BIT_MASK(EV_SND); diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c new file mode 100644 index 000000000000..a88f3fb172fe --- /dev/null +++ b/drivers/leds/leds-ss4200.c @@ -0,0 +1,551 @@ +/* + * SS4200-E Hardware API + * Copyright (c) 2009, Intel Corporation. + * Copyright IBM Corporation, 2009 + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + * Author: Dave Hansen <dave@sr71.net> + */ + +#include <linux/dmi.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/types.h> +#include <linux/uaccess.h> + +MODULE_AUTHOR("Rodney Girod <rgirod@confocus.com>, Dave Hansen <dave@sr71.net>"); +MODULE_DESCRIPTION("Intel NAS/Home Server ICH7 GPIO Driver"); +MODULE_LICENSE("GPL"); + +/* + * ICH7 LPC/GPIO PCI Config register offsets + */ +#define PMBASE 0x040 +#define GPIO_BASE 0x048 +#define GPIO_CTRL 0x04c +#define GPIO_EN 0x010 + +/* + * The ICH7 GPIO register block is 64 bytes in size. + */ +#define ICH7_GPIO_SIZE 64 + +/* + * Define register offsets within the ICH7 register block. + */ +#define GPIO_USE_SEL 0x000 +#define GP_IO_SEL 0x004 +#define GP_LVL 0x00c +#define GPO_BLINK 0x018 +#define GPI_INV 0x030 +#define GPIO_USE_SEL2 0x034 +#define GP_IO_SEL2 0x038 +#define GP_LVL2 0x03c + +/* + * PCI ID of the Intel ICH7 LPC Device within which the GPIO block lives. + */ +static struct pci_device_id ich7_lpc_pci_id[] = +{ + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_30) }, + { } /* NULL entry */ +}; + +MODULE_DEVICE_TABLE(pci, ich7_lpc_pci_id); + +static int __init ss4200_led_dmi_callback(const struct dmi_system_id *id) +{ + printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident); + return 1; +} + +static unsigned int __initdata nodetect; +module_param_named(nodetect, nodetect, bool, 0); +MODULE_PARM_DESC(nodetect, "Skip DMI-based hardware detection"); + +/* + * struct nas_led_whitelist - List of known good models + * + * Contains the known good models this driver is compatible with. + * When adding a new model try to be as strict as possible. This + * makes it possible to keep the false positives (the model is + * detected as working, but in reality it is not) as low as + * possible. + */ +static struct dmi_system_id __initdata nas_led_whitelist[] = { + { + .callback = ss4200_led_dmi_callback, + .ident = "Intel SS4200-E", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Intel"), + DMI_MATCH(DMI_PRODUCT_NAME, "SS4200-E"), + DMI_MATCH(DMI_PRODUCT_VERSION, "1.00.00") + } + }, +}; + +/* + * Base I/O address assigned to the Power Management register block + */ +static u32 g_pm_io_base; + +/* + * Base I/O address assigned to the ICH7 GPIO register block + */ +static u32 nas_gpio_io_base; + +/* + * When we successfully register a region, we are returned a resource. + * We use these to identify which regions we need to release on our way + * back out. + */ +static struct resource *gp_gpio_resource; + +struct nasgpio_led { + char *name; + u32 gpio_bit; + struct led_classdev led_cdev; +}; + +/* + * gpio_bit(s) are the ICH7 GPIO bit assignments + */ +static struct nasgpio_led nasgpio_leds[] = { + { .name = "hdd1:blue:sata", .gpio_bit = 0 }, + { .name = "hdd1:amber:sata", .gpio_bit = 1 }, + { .name = "hdd2:blue:sata", .gpio_bit = 2 }, + { .name = "hdd2:amber:sata", .gpio_bit = 3 }, + { .name = "hdd3:blue:sata", .gpio_bit = 4 }, + { .name = "hdd3:amber:sata", .gpio_bit = 5 }, + { .name = "hdd4:blue:sata", .gpio_bit = 6 }, + { .name = "hdd4:amber:sata", .gpio_bit = 7 }, + { .name = "power:blue:power", .gpio_bit = 27}, + { .name = "power:amber:power", .gpio_bit = 28}, +}; + +#define NAS_RECOVERY 0x00000400 /* GPIO10 */ + +static struct nasgpio_led * +led_classdev_to_nasgpio_led(struct led_classdev *led_cdev) +{ + return container_of(led_cdev, struct nasgpio_led, led_cdev); +} + +static struct nasgpio_led *get_led_named(char *name) +{ + int i; + for (i = 0; i < ARRAY_SIZE(nasgpio_leds); i++) { + if (strcmp(nasgpio_leds[i].name, name)) + continue; + return &nasgpio_leds[i]; + } + return NULL; +} + +/* + * This protects access to the gpio ports. + */ +static DEFINE_SPINLOCK(nasgpio_gpio_lock); + +/* + * There are two gpio ports, one for blinking and the other + * for power. @port tells us if we're doing blinking or + * power control. + * + * Caller must hold nasgpio_gpio_lock + */ +void nasgpio_led_set_attr(struct led_classdev *led_cdev, u32 port, u32 value) +{ + struct nasgpio_led *led = led_classdev_to_nasgpio_led(led_cdev); + u32 gpio_out; + + gpio_out = inl(nas_gpio_io_base + port); + if (value) + gpio_out |= (1<<led->gpio_bit); + else + gpio_out &= ~(1<<led->gpio_bit); + + outl(gpio_out, nas_gpio_io_base + port); +} + +u32 nasgpio_led_get_attr(struct led_classdev *led_cdev, u32 port) +{ + struct nasgpio_led *led = led_classdev_to_nasgpio_led(led_cdev); + u32 gpio_in; + + spin_lock(&nasgpio_gpio_lock); + gpio_in = inl(nas_gpio_io_base + port); + spin_unlock(&nasgpio_gpio_lock); + if (gpio_in & (1<<led->gpio_bit)) + return 1; + return 0; +} + +/* + * There is actual brightness control in the hardware, + * but it is via smbus commands and not implemented + * in this driver. + */ +static void nasgpio_led_set_brightness(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + u32 setting = 0; + if (brightness >= LED_HALF) + setting = 1; + /* + * Hold the lock across both operations. This ensures + * consistency so that both the "turn off blinking" + * and "turn light off" operations complete as a set. + */ + spin_lock(&nasgpio_gpio_lock); + /* + * LED class documentation asks that past blink state + * be disabled when brightness is turned to zero. + */ + if (brightness == 0) + nasgpio_led_set_attr(led_cdev, GPO_BLINK, 0); + nasgpio_led_set_attr(led_cdev, GP_LVL, setting); + spin_unlock(&nasgpio_gpio_lock); +} + +static int nasgpio_led_set_blink(struct led_classdev *led_cdev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + u32 setting = 1; + if (!(*delay_on == 0 && *delay_off == 0) && + !(*delay_on == 500 && *delay_off == 500)) + return -EINVAL; + /* + * These are very approximate. + */ + *delay_on = 500; + *delay_off = 500; + + spin_lock(&nasgpio_gpio_lock); + nasgpio_led_set_attr(led_cdev, GPO_BLINK, setting); + spin_unlock(&nasgpio_gpio_lock); + + return 0; +} + + +/* + * Initialize the ICH7 GPIO registers for NAS usage. The BIOS should have + * already taken care of this, but we will do so in a non destructive manner + * so that we have what we need whether the BIOS did it or not. + */ +static int ich7_gpio_init(struct device *dev) +{ + int i; + u32 config_data = 0; + u32 all_nas_led = 0; + + for (i = 0; i < ARRAY_SIZE(nasgpio_leds); i++) + all_nas_led |= (1<<nasgpio_leds[i].gpio_bit); + + spin_lock(&nasgpio_gpio_lock); + /* + * We need to enable all of the GPIO lines used by the NAS box, + * so we will read the current Use Selection and add our usage + * to it. This should be benign with regard to the original + * BIOS configuration. + */ + config_data = inl(nas_gpio_io_base + GPIO_USE_SEL); + dev_printk(KERN_DEBUG, dev, "Data read from GPIO_USE_SEL = 0x%08x\n", + config_data); + config_data |= all_nas_led + NAS_RECOVERY; + outl(config_data, nas_gpio_io_base + GPIO_USE_SEL); + config_data = inl(nas_gpio_io_base + GPIO_USE_SEL); + dev_printk(KERN_DEBUG, dev, "GPIO_USE_SEL = 0x%08x\n\n", + config_data); + + /* + * The LED GPIO outputs need to be configured for output, so we + * will ensure that all LED lines are cleared for output and the + * RECOVERY line ready for input. This too should be benign with + * regard to BIOS configuration. + */ + config_data = inl(nas_gpio_io_base + GP_IO_SEL); + dev_printk(KERN_DEBUG, dev, "Data read from GP_IO_SEL = 0x%08x\n", + config_data); + config_data &= ~all_nas_led; + config_data |= NAS_RECOVERY; + outl(config_data, nas_gpio_io_base + GP_IO_SEL); + config_data = inl(nas_gpio_io_base + GP_IO_SEL); + dev_printk(KERN_DEBUG, dev, "GP_IO_SEL = 0x%08x\n\n", + config_data); + + /* + * In our final system, the BIOS will initialize the state of all + * of the LEDs. For now, we turn them all off (or Low). + */ + config_data = inl(nas_gpio_io_base + GP_LVL); + dev_printk(KERN_DEBUG, dev, "Data read from GP_LVL = 0x%08x\n", + config_data); + /* + * In our final system, the BIOS will initialize the blink state of all + * of the LEDs. For now, we turn blink off for all of them. + */ + config_data = inl(nas_gpio_io_base + GPO_BLINK); + dev_printk(KERN_DEBUG, dev, "Data read from GPO_BLINK = 0x%08x\n", + config_data); + + /* + * At this moment, I am unsure if anything needs to happen with GPI_INV + */ + config_data = inl(nas_gpio_io_base + GPI_INV); + dev_printk(KERN_DEBUG, dev, "Data read from GPI_INV = 0x%08x\n", + config_data); + + spin_unlock(&nasgpio_gpio_lock); + return 0; +} + +static void ich7_lpc_cleanup(struct device *dev) +{ + /* + * If we were given exclusive use of the GPIO + * I/O Address range, we must return it. + */ + if (gp_gpio_resource) { + dev_printk(KERN_DEBUG, dev, "Releasing GPIO I/O addresses\n"); + release_region(nas_gpio_io_base, ICH7_GPIO_SIZE); + gp_gpio_resource = NULL; + } +} + +/* + * The OS has determined that the LPC of the Intel ICH7 Southbridge is present + * so we can retrive the required operational information and prepare the GPIO. + */ +static struct pci_dev *nas_gpio_pci_dev; +static int ich7_lpc_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + int status = 0; + u32 gc = 0; + + pci_enable_device(dev); + + nas_gpio_pci_dev = dev; + status = pci_read_config_dword(dev, PMBASE, &g_pm_io_base); + if (status) + goto out; + g_pm_io_base &= 0x00000ff80; + + status = pci_read_config_dword(dev, GPIO_CTRL, &gc); + if (!(GPIO_EN & gc)) { + status = -EEXIST; + dev_printk(KERN_INFO, &dev->dev, + "ERROR: The LPC GPIO Block has not been enabled.\n"); + goto out; + } + + status = pci_read_config_dword(dev, GPIO_BASE, &nas_gpio_io_base); + if (0 > status) { + dev_printk(KERN_INFO, &dev->dev, "Unable to read GPIOBASE.\n"); + goto out; + } + dev_printk(KERN_DEBUG, &dev->dev, + "GPIOBASE = 0x%08x\n", nas_gpio_io_base); + nas_gpio_io_base &= 0x00000ffc0; + + /* + * Insure that we have exclusive access to the GPIO I/O address range. + */ + gp_gpio_resource = request_region(nas_gpio_io_base, + ICH7_GPIO_SIZE, KBUILD_MODNAME); + if (NULL == gp_gpio_resource) { + dev_printk(KERN_INFO, &dev->dev, + "ERROR Unable to register GPIO I/O addresses.\n"); + status = -1; + goto out; + } + + /* + * Initialize the GPIO for NAS/Home Server Use + */ + ich7_gpio_init(&dev->dev); + +out: + if (status) + ich7_lpc_cleanup(&dev->dev); + return status; +} + +static void ich7_lpc_remove(struct pci_dev *dev) +{ + ich7_lpc_cleanup(&dev->dev); +} + +/* + * pci_driver structure passed to the PCI modules + */ +static struct pci_driver nas_gpio_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = ich7_lpc_pci_id, + .probe = ich7_lpc_probe, + .remove = ich7_lpc_remove, +}; + +static struct led_classdev *get_classdev_for_led_nr(int nr) +{ + struct nasgpio_led *nas_led = &nasgpio_leds[nr]; + struct led_classdev *led = &nas_led->led_cdev; + return led; +} + + +void set_power_light_amber_noblink(void) +{ + struct nasgpio_led *amber = get_led_named("power:amber:power"); + struct nasgpio_led *blue = get_led_named("power:blue:power"); + + if (!amber || !blue) + return; + /* + * LED_OFF implies disabling future blinking + */ + printk(KERN_DEBUG "setting blue off and amber on\n"); + + nasgpio_led_set_brightness(&blue->led_cdev, LED_OFF); + nasgpio_led_set_brightness(&amber->led_cdev, LED_FULL); +} + +static ssize_t nas_led_blink_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct led_classdev *led = dev_get_drvdata(dev); + int blinking = 0; + if (nasgpio_led_get_attr(led, GPO_BLINK)) + blinking = 1; + return sprintf(buf, "%u\n", blinking); +} + +static ssize_t nas_led_blink_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + int ret; + struct led_classdev *led = dev_get_drvdata(dev); + unsigned long blink_state; + + ret = strict_strtoul(buf, 10, &blink_state); + if (ret) + return ret; + + spin_lock(&nasgpio_gpio_lock); + nasgpio_led_set_attr(led, GPO_BLINK, blink_state); + spin_unlock(&nasgpio_gpio_lock); + + return size; +} + +static DEVICE_ATTR(blink, 0644, nas_led_blink_show, nas_led_blink_store); + +int register_nasgpio_led(int led_nr) +{ + int ret; + struct nasgpio_led *nas_led = &nasgpio_leds[led_nr]; + struct led_classdev *led = get_classdev_for_led_nr(led_nr); + + led->name = nas_led->name; + led->brightness = LED_OFF; + if (nasgpio_led_get_attr(led, GP_LVL)) + led->brightness = LED_FULL; + led->brightness_set = nasgpio_led_set_brightness; + led->blink_set = nasgpio_led_set_blink; + ret = led_classdev_register(&nas_gpio_pci_dev->dev, led); + if (ret) + return ret; + ret = device_create_file(led->dev, &dev_attr_blink); + if (ret) + led_classdev_unregister(led); + return ret; +} + +void unregister_nasgpio_led(int led_nr) +{ + struct led_classdev *led = get_classdev_for_led_nr(led_nr); + led_classdev_unregister(led); + device_remove_file(led->dev, &dev_attr_blink); +} +/* + * module load/initialization + */ +static int __init nas_gpio_init(void) +{ + int i; + int ret = 0; + int nr_devices = 0; + + nr_devices = dmi_check_system(nas_led_whitelist); + if (nodetect) { + printk(KERN_INFO "%s: skipping hardware autodetection\n", + KBUILD_MODNAME); + printk(KERN_INFO "\tif this works, please send the output "); + printk(KERN_INFO "of 'dmidecode' to dave@sr71.net\n"); + nr_devices++; + } + + if (nr_devices <= 0) { + printk(KERN_INFO "%s: no LED devices found\n", + KBUILD_MODNAME); + return -ENODEV; + } + + printk(KERN_INFO "registering %s PCI driver\n", KBUILD_MODNAME); + ret = pci_register_driver(&nas_gpio_pci_driver); + if (ret) + return ret; + for (i = 0; i < ARRAY_SIZE(nasgpio_leds); i++) { + ret = register_nasgpio_led(i); + if (ret) + goto out_err; + } + /* + * When the system powers on, the BIOS leaves the power + * light blue and blinking. This will turn it solid + * amber once the driver is loaded. + */ + set_power_light_amber_noblink(); + return 0; +out_err: + for (; i >= 0; i--) + unregister_nasgpio_led(i); + pci_unregister_driver(&nas_gpio_pci_driver); + return ret; +} + +/* + * module unload + */ +static void __exit nas_gpio_exit(void) +{ + int i; + printk(KERN_INFO "Unregistering %s driver\n", KBUILD_MODNAME); + for (i = 0; i < ARRAY_SIZE(nasgpio_leds); i++) + unregister_nasgpio_led(i); + pci_unregister_driver(&nas_gpio_pci_driver); +} + +module_init(nas_gpio_init); +module_exit(nas_gpio_exit); diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c new file mode 100644 index 000000000000..c586d05e336a --- /dev/null +++ b/drivers/leds/leds-wm831x-status.c @@ -0,0 +1,341 @@ +/* + * LED driver for WM831x status LEDs + * + * Copyright(C) 2009 Wolfson Microelectronics PLC. + * + * 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/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/err.h> +#include <linux/mfd/wm831x/core.h> +#include <linux/mfd/wm831x/pdata.h> +#include <linux/mfd/wm831x/status.h> + + +struct wm831x_status { + struct led_classdev cdev; + struct wm831x *wm831x; + struct work_struct work; + struct mutex mutex; + + spinlock_t value_lock; + int reg; /* Control register */ + int reg_val; /* Control register value */ + + int blink; + int blink_time; + int blink_cyc; + int src; + enum led_brightness brightness; +}; + +#define to_wm831x_status(led_cdev) \ + container_of(led_cdev, struct wm831x_status, cdev) + +static void wm831x_status_work(struct work_struct *work) +{ + struct wm831x_status *led = container_of(work, struct wm831x_status, + work); + unsigned long flags; + + mutex_lock(&led->mutex); + + led->reg_val &= ~(WM831X_LED_SRC_MASK | WM831X_LED_MODE_MASK | + WM831X_LED_DUTY_CYC_MASK | WM831X_LED_DUR_MASK); + + spin_lock_irqsave(&led->value_lock, flags); + + led->reg_val |= led->src << WM831X_LED_SRC_SHIFT; + if (led->blink) { + led->reg_val |= 2 << WM831X_LED_MODE_SHIFT; + led->reg_val |= led->blink_time << WM831X_LED_DUR_SHIFT; + led->reg_val |= led->blink_cyc; + } else { + if (led->brightness != LED_OFF) + led->reg_val |= 1 << WM831X_LED_MODE_SHIFT; + } + + spin_unlock_irqrestore(&led->value_lock, flags); + + wm831x_reg_write(led->wm831x, led->reg, led->reg_val); + + mutex_unlock(&led->mutex); +} + +static void wm831x_status_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct wm831x_status *led = to_wm831x_status(led_cdev); + unsigned long flags; + + spin_lock_irqsave(&led->value_lock, flags); + led->brightness = value; + if (value == LED_OFF) + led->blink = 0; + schedule_work(&led->work); + spin_unlock_irqrestore(&led->value_lock, flags); +} + +static int wm831x_status_blink_set(struct led_classdev *led_cdev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct wm831x_status *led = to_wm831x_status(led_cdev); + unsigned long flags; + int ret = 0; + + /* Pick some defaults if we've not been given times */ + if (*delay_on == 0 && *delay_off == 0) { + *delay_on = 250; + *delay_off = 250; + } + + spin_lock_irqsave(&led->value_lock, flags); + + /* We only have a limited selection of settings, see if we can + * support the configuration we're being given */ + switch (*delay_on) { + case 1000: + led->blink_time = 0; + break; + case 250: + led->blink_time = 1; + break; + case 125: + led->blink_time = 2; + break; + case 62: + case 63: + /* Actually 62.5ms */ + led->blink_time = 3; + break; + default: + ret = -EINVAL; + break; + } + + if (ret == 0) { + switch (*delay_off / *delay_on) { + case 1: + led->blink_cyc = 0; + break; + case 3: + led->blink_cyc = 1; + break; + case 4: + led->blink_cyc = 2; + break; + case 8: + led->blink_cyc = 3; + break; + default: + ret = -EINVAL; + break; + } + } + + if (ret == 0) + led->blink = 1; + else + led->blink = 0; + + /* Always update; if we fail turn off blinking since we expect + * a software fallback. */ + schedule_work(&led->work); + + spin_unlock_irqrestore(&led->value_lock, flags); + + return ret; +} + +static const char *led_src_texts[] = { + "otp", + "power", + "charger", + "soft", +}; + +static ssize_t wm831x_status_src_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct wm831x_status *led = to_wm831x_status(led_cdev); + int i; + ssize_t ret = 0; + + mutex_lock(&led->mutex); + + for (i = 0; i < ARRAY_SIZE(led_src_texts); i++) + if (i == led->src) + ret += sprintf(&buf[ret], "[%s] ", led_src_texts[i]); + else + ret += sprintf(&buf[ret], "%s ", led_src_texts[i]); + + mutex_unlock(&led->mutex); + + ret += sprintf(&buf[ret], "\n"); + + return ret; +} + +static ssize_t wm831x_status_src_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct wm831x_status *led = to_wm831x_status(led_cdev); + char name[20]; + int i; + size_t len; + + name[sizeof(name) - 1] = '\0'; + strncpy(name, buf, sizeof(name) - 1); + len = strlen(name); + + if (len && name[len - 1] == '\n') + name[len - 1] = '\0'; + + for (i = 0; i < ARRAY_SIZE(led_src_texts); i++) { + if (!strcmp(name, led_src_texts[i])) { + mutex_lock(&led->mutex); + + led->src = i; + schedule_work(&led->work); + + mutex_unlock(&led->mutex); + } + } + + return size; +} + +static DEVICE_ATTR(src, 0644, wm831x_status_src_show, wm831x_status_src_store); + +static int wm831x_status_probe(struct platform_device *pdev) +{ + struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); + struct wm831x_pdata *chip_pdata; + struct wm831x_status_pdata pdata; + struct wm831x_status *drvdata; + struct resource *res; + int id = pdev->id % ARRAY_SIZE(chip_pdata->status); + int ret; + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (res == NULL) { + dev_err(&pdev->dev, "No I/O resource\n"); + ret = -EINVAL; + goto err; + } + + drvdata = kzalloc(sizeof(struct wm831x_status), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + dev_set_drvdata(&pdev->dev, drvdata); + + drvdata->wm831x = wm831x; + drvdata->reg = res->start; + + if (wm831x->dev->platform_data) + chip_pdata = wm831x->dev->platform_data; + else + chip_pdata = NULL; + + memset(&pdata, 0, sizeof(pdata)); + if (chip_pdata && chip_pdata->status[id]) + memcpy(&pdata, chip_pdata->status[id], sizeof(pdata)); + else + pdata.name = dev_name(&pdev->dev); + + mutex_init(&drvdata->mutex); + INIT_WORK(&drvdata->work, wm831x_status_work); + spin_lock_init(&drvdata->value_lock); + + /* We cache the configuration register and read startup values + * from it. */ + drvdata->reg_val = wm831x_reg_read(wm831x, drvdata->reg); + + if (drvdata->reg_val & WM831X_LED_MODE_MASK) + drvdata->brightness = LED_FULL; + else + drvdata->brightness = LED_OFF; + + /* Set a default source if configured, otherwise leave the + * current hardware setting. + */ + if (pdata.default_src == WM831X_STATUS_PRESERVE) { + drvdata->src = drvdata->reg_val; + drvdata->src &= WM831X_LED_SRC_MASK; + drvdata->src >>= WM831X_LED_SRC_SHIFT; + } else { + drvdata->src = pdata.default_src - 1; + } + + drvdata->cdev.name = pdata.name; + drvdata->cdev.default_trigger = pdata.default_trigger; + drvdata->cdev.brightness_set = wm831x_status_set; + drvdata->cdev.blink_set = wm831x_status_blink_set; + + ret = led_classdev_register(wm831x->dev, &drvdata->cdev); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to register LED: %d\n", ret); + goto err_led; + } + + ret = device_create_file(drvdata->cdev.dev, &dev_attr_src); + if (ret != 0) + dev_err(&pdev->dev, + "No source control for LED: %d\n", ret); + + return 0; + +err_led: + led_classdev_unregister(&drvdata->cdev); + kfree(drvdata); +err: + return ret; +} + +static int wm831x_status_remove(struct platform_device *pdev) +{ + struct wm831x_status *drvdata = platform_get_drvdata(pdev); + + device_remove_file(drvdata->cdev.dev, &dev_attr_src); + led_classdev_unregister(&drvdata->cdev); + kfree(drvdata); + + return 0; +} + +static struct platform_driver wm831x_status_driver = { + .driver = { + .name = "wm831x-status", + .owner = THIS_MODULE, + }, + .probe = wm831x_status_probe, + .remove = wm831x_status_remove, +}; + +static int __devinit wm831x_status_init(void) +{ + return platform_driver_register(&wm831x_status_driver); +} +module_init(wm831x_status_init); + +static void wm831x_status_exit(void) +{ + platform_driver_unregister(&wm831x_status_driver); +} +module_exit(wm831x_status_exit); + +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_DESCRIPTION("WM831x status LED driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:wm831x-status"); diff --git a/drivers/leds/ledtrig-gpio.c b/drivers/leds/ledtrig-gpio.c index 1bc5db4ece0d..f5913372d691 100644 --- a/drivers/leds/ledtrig-gpio.c +++ b/drivers/leds/ledtrig-gpio.c @@ -44,22 +44,22 @@ static void gpio_trig_work(struct work_struct *work) struct gpio_trig_data, work); int tmp; - if (!gpio_data->gpio) - return; - - tmp = gpio_get_value(gpio_data->gpio); - if (gpio_data->inverted) - tmp = !tmp; - - if (tmp) { - if (gpio_data->desired_brightness) - led_set_brightness(gpio_data->led, - gpio_data->desired_brightness); - else - led_set_brightness(gpio_data->led, LED_FULL); - } else { - led_set_brightness(gpio_data->led, LED_OFF); - } + if (!gpio_data->gpio) + return; + + tmp = gpio_get_value(gpio_data->gpio); + if (gpio_data->inverted) + tmp = !tmp; + + if (tmp) { + if (gpio_data->desired_brightness) + led_set_brightness(gpio_data->led, + gpio_data->desired_brightness); + else + led_set_brightness(gpio_data->led, LED_FULL); + } else { + led_set_brightness(gpio_data->led, LED_OFF); + } } static ssize_t gpio_trig_brightness_show(struct device *dev, diff --git a/drivers/macintosh/via-pmu-led.c b/drivers/macintosh/via-pmu-led.c index 55ad95671387..d242976bcfe7 100644 --- a/drivers/macintosh/via-pmu-led.c +++ b/drivers/macintosh/via-pmu-led.c @@ -72,7 +72,7 @@ static void pmu_led_set(struct led_classdev *led_cdev, } static struct led_classdev pmu_led = { - .name = "pmu-front-led", + .name = "pmu-led::front", #ifdef CONFIG_ADB_PMU_LED_IDE .default_trigger = "ide-disk", #endif diff --git a/include/linux/mfd/wm831x/status.h b/include/linux/mfd/wm831x/status.h new file mode 100644 index 000000000000..6bc090d0e3ac --- /dev/null +++ b/include/linux/mfd/wm831x/status.h @@ -0,0 +1,34 @@ +/* + * include/linux/mfd/wm831x/status.h -- Status LEDs for WM831x + * + * Copyright 2009 Wolfson Microelectronics PLC. + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __MFD_WM831X_STATUS_H__ +#define __MFD_WM831X_STATUS_H__ + +#define WM831X_LED_SRC_MASK 0xC000 /* LED_SRC - [15:14] */ +#define WM831X_LED_SRC_SHIFT 14 /* LED_SRC - [15:14] */ +#define WM831X_LED_SRC_WIDTH 2 /* LED_SRC - [15:14] */ +#define WM831X_LED_MODE_MASK 0x0300 /* LED_MODE - [9:8] */ +#define WM831X_LED_MODE_SHIFT 8 /* LED_MODE - [9:8] */ +#define WM831X_LED_MODE_WIDTH 2 /* LED_MODE - [9:8] */ +#define WM831X_LED_SEQ_LEN_MASK 0x0030 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_SEQ_LEN_SHIFT 4 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_SEQ_LEN_WIDTH 2 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_DUR_MASK 0x000C /* LED_DUR - [3:2] */ +#define WM831X_LED_DUR_SHIFT 2 /* LED_DUR - [3:2] */ +#define WM831X_LED_DUR_WIDTH 2 /* LED_DUR - [3:2] */ +#define WM831X_LED_DUTY_CYC_MASK 0x0003 /* LED_DUTY_CYC - [1:0] */ +#define WM831X_LED_DUTY_CYC_SHIFT 0 /* LED_DUTY_CYC - [1:0] */ +#define WM831X_LED_DUTY_CYC_WIDTH 2 /* LED_DUTY_CYC - [1:0] */ + +#endif |