From f22558d701755f2f9cfdbd4a0862a58ef5fb1dbb Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Mon, 13 May 2019 09:56:32 +0200 Subject: dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra signals for handshaking. It needs to know when is the slave (Linux) side's TX FIFO ready for transfer (the ready-gpio signal on the SPI controller node) and when does it wish to respond with a command (the cmd-gpio property). Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Reviewed-by: Rob Herring Signed-off-by: Andy Shevchenko --- .../devicetree/bindings/misc/olpc,xo1.75-ec.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt new file mode 100644 index 000000000000..8c4d649cdd8f --- /dev/null +++ b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt @@ -0,0 +1,23 @@ +OLPC XO-1.75 Embedded Controller + +Required properties: +- compatible: Should be "olpc,xo1.75-ec". +- cmd-gpios: gpio specifier of the CMD pin + +The embedded controller requires the SPI controller driver to signal readiness +to receive a transfer (that is, when TX FIFO contains the response data) by +strobing the ACK pin with the ready signal. See the "ready-gpios" property of the +SSP binding as documented in: +. + +Example: + &ssp3 { + spi-slave; + ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>; + + slave { + compatible = "olpc,xo1.75-ec"; + spi-cpha; + cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>; + }; + }; -- cgit v1.2.3 From b096f626a6827ad2ced5ebdbdc04e62422d463f6 Mon Sep 17 00:00:00 2001 From: Yurii Pavlovskyi Date: Tue, 14 May 2019 21:07:05 +0200 Subject: platform/x86: asus-wmi: Switch fan boost mode The WMI exposes a write-only device ID where up to three fan modes can be switched on some laptops (TUF Gaming FX505GM). There is a hotkey combination Fn-F5 that does have a fan icon, which is designed to toggle between fan modes. The DSTS of the device ID returns information about the presence of this capability and the presence of each of the two additional fan modes as a bitmask (0x01 - overboost present, 0x02 - silent present) [1]. Add a SysFS entry that reads the last written value and updates value in WMI on write and a hotkey handler that toggles the modes taking into account their availability according to DSTS. Modes: * 0x00 - normal or balanced, * 0x01 - overboost, increased fan RPM, * 0x02 - silent, decreased fan RPM [1] Link: https://lkml.org/lkml/2019/4/12/110 Signed-off-by: Yurii Pavlovskyi Suggested-by: Daniel Drake Signed-off-by: Andy Shevchenko --- Documentation/ABI/testing/sysfs-platform-asus-wmi | 10 ++ drivers/platform/x86/asus-wmi.c | 151 ++++++++++++++++++++-- include/linux/platform_data/x86/asus-wmi.h | 1 + 3 files changed, 154 insertions(+), 8 deletions(-) (limited to 'Documentation') diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi index 019e1e29370e..87ae5cc983bf 100644 --- a/Documentation/ABI/testing/sysfs-platform-asus-wmi +++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi @@ -36,3 +36,13 @@ KernelVersion: 3.5 Contact: "AceLan Kao" Description: Resume on lid open. 1 means on, 0 means off. + +What: /sys/devices/platform//fan_mode +Date: Apr 2019 +KernelVersion: 5.2 +Contact: "Yurii Pavlovskyi" +Description: + Fan boost mode: + * 0 - normal, + * 1 - overboost, + * 2 - silent diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index a1d85667383c..5712bc56fa10 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -70,6 +70,7 @@ MODULE_LICENSE("GPL"); #define NOTIFY_KBD_BRTUP 0xc4 #define NOTIFY_KBD_BRTDWN 0xc5 #define NOTIFY_KBD_BRTTOGGLE 0xc7 +#define NOTIFY_KBD_FBM 0x99 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0) @@ -80,6 +81,13 @@ MODULE_LICENSE("GPL"); #define ASUS_FAN_CTRL_MANUAL 1 #define ASUS_FAN_CTRL_AUTO 2 +#define ASUS_FAN_MODE_NORMAL 0 +#define ASUS_FAN_MODE_OVERBOOST 1 +#define ASUS_FAN_MODE_OVERBOOST_MASK 0x01 +#define ASUS_FAN_MODE_SILENT 2 +#define ASUS_FAN_MODE_SILENT_MASK 0x02 +#define ASUS_FAN_MODES_MASK 0x03 + #define USB_INTEL_XUSB2PR 0xD0 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 @@ -187,6 +195,10 @@ struct asus_wmi { int asus_hwmon_num_fans; int asus_hwmon_pwm; + bool fan_mode_available; + u8 fan_mode_mask; + u8 fan_mode; + struct hotplug_slot hotplug_slot; struct mutex hotplug_lock; struct mutex wmi_lock; @@ -1483,6 +1495,116 @@ static int asus_wmi_fan_init(struct asus_wmi *asus) return 0; } +/* Fan mode *******************************************************************/ + +static int fan_mode_check_present(struct asus_wmi *asus) +{ + u32 result; + int err; + + asus->fan_mode_available = false; + + err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_MODE, &result); + if (err) { + if (err == -ENODEV) + return 0; + else + return err; + } + + if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) && + (result & ASUS_FAN_MODES_MASK)) { + asus->fan_mode_available = true; + asus->fan_mode_mask = result & ASUS_FAN_MODES_MASK; + } + + return 0; +} + +static int fan_mode_write(struct asus_wmi *asus) +{ + int err; + u8 value; + u32 retval; + + value = asus->fan_mode; + + pr_info("Set fan mode: %u\n", value); + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_MODE, value, &retval); + + if (err) { + pr_warn("Failed to set fan mode: %d\n", err); + return err; + } + + if (retval != 1) { + pr_warn("Failed to set fan mode (retval): 0x%x\n", retval); + return -EIO; + } + + return 0; +} + +static int fan_mode_switch_next(struct asus_wmi *asus) +{ + if (asus->fan_mode == ASUS_FAN_MODE_NORMAL) { + if (asus->fan_mode_mask & ASUS_FAN_MODE_OVERBOOST_MASK) + asus->fan_mode = ASUS_FAN_MODE_OVERBOOST; + else if (asus->fan_mode_mask & ASUS_FAN_MODE_SILENT_MASK) + asus->fan_mode = ASUS_FAN_MODE_SILENT; + } else if (asus->fan_mode == ASUS_FAN_MODE_OVERBOOST) { + if (asus->fan_mode_mask & ASUS_FAN_MODE_SILENT_MASK) + asus->fan_mode = ASUS_FAN_MODE_SILENT; + else + asus->fan_mode = ASUS_FAN_MODE_NORMAL; + } else { + asus->fan_mode = ASUS_FAN_MODE_NORMAL; + } + + return fan_mode_write(asus); +} + +static ssize_t fan_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct asus_wmi *asus = dev_get_drvdata(dev); + + return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_mode); +} + +static ssize_t fan_mode_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int result; + u8 new_mode; + + struct asus_wmi *asus = dev_get_drvdata(dev); + + result = kstrtou8(buf, 10, &new_mode); + if (result < 0) { + pr_warn("Trying to store invalid value\n"); + return result; + } + + if (new_mode == ASUS_FAN_MODE_OVERBOOST) { + if (!(asus->fan_mode_mask & ASUS_FAN_MODE_OVERBOOST_MASK)) + return -EINVAL; + } else if (new_mode == ASUS_FAN_MODE_SILENT) { + if (!(asus->fan_mode_mask & ASUS_FAN_MODE_SILENT_MASK)) + return -EINVAL; + } else if (new_mode != ASUS_FAN_MODE_NORMAL) { + return -EINVAL; + } + + asus->fan_mode = new_mode; + fan_mode_write(asus); + + return result; +} + +// Fan mode: 0 - normal, 1 - overboost, 2 - silent +static DEVICE_ATTR_RW(fan_mode); + /* Backlight ******************************************************************/ static int read_backlight_power(struct asus_wmi *asus) @@ -1761,6 +1883,11 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) return; } + if (asus->fan_mode_available && code == NOTIFY_KBD_FBM) { + fan_mode_switch_next(asus); + return; + } + if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) return; @@ -1917,6 +2044,7 @@ static struct attribute *platform_attributes[] = { &dev_attr_touchpad.attr, &dev_attr_lid_resume.attr, &dev_attr_als_enable.attr, + &dev_attr_fan_mode.attr, NULL }; @@ -1938,6 +2066,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj, devid = ASUS_WMI_DEVID_LID_RESUME; else if (attr == &dev_attr_als_enable.attr) devid = ASUS_WMI_DEVID_ALS_ENABLE; + else if (attr == &dev_attr_fan_mode.attr) + ok = asus->fan_mode_available; if (devid != -1) ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0); @@ -2037,12 +2167,7 @@ static int asus_wmi_platform_init(struct asus_wmi *asus) asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP, asus->driver->quirks->wapf, NULL); - return asus_wmi_sysfs_init(asus->platform_device); -} - -static void asus_wmi_platform_exit(struct asus_wmi *asus) -{ - asus_wmi_sysfs_exit(asus->platform_device); + return 0; } /* debugfs ********************************************************************/ @@ -2200,6 +2325,14 @@ static int asus_wmi_add(struct platform_device *pdev) if (err) goto fail_platform; + err = fan_mode_check_present(asus); + if (err) + goto fail_fan_mode; + + err = asus_wmi_sysfs_init(asus->platform_device); + if (err) + goto fail_sysfs; + err = asus_wmi_input_init(asus); if (err) goto fail_input; @@ -2277,7 +2410,9 @@ fail_leds: fail_hwmon: asus_wmi_input_exit(asus); fail_input: - asus_wmi_platform_exit(asus); + asus_wmi_sysfs_exit(asus->platform_device); +fail_sysfs: +fail_fan_mode: fail_platform: kfree(asus); return err; @@ -2294,7 +2429,7 @@ static int asus_wmi_remove(struct platform_device *device) asus_wmi_led_exit(asus); asus_wmi_rfkill_exit(asus); asus_wmi_debugfs_exit(asus); - asus_wmi_platform_exit(asus); + asus_wmi_sysfs_exit(asus->platform_device); asus_hwmon_fan_set_auto(asus); kfree(asus); diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h index 0668f76df921..8551156b8dca 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -57,6 +57,7 @@ #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ #define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 +#define ASUS_WMI_DEVID_FAN_MODE 0x00110018 /* Misc */ #define ASUS_WMI_DEVID_CAMERA 0x00060013 -- cgit v1.2.3 From 2ee5bfc1efc81179c73abcd33098dd2c86019146 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Wed, 26 Jun 2019 15:38:42 -0700 Subject: platform/x86: ISST: Update ioctl-number.txt for Intel Speed Select interface Reserve ioctl numbers for intel Speed Select Technology interface drivers. Signed-off-by: Srinivas Pandruvada Signed-off-by: Andy Shevchenko --- Documentation/ioctl/ioctl-number.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index c9558146ac58..ab0b3f686454 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt @@ -348,3 +348,4 @@ Code Seq#(hex) Include File Comments 0xF6 all LTTng Linux Trace Toolkit Next Generation 0xFD all linux/dm-ioctl.h +0xFE all linux/isst_if.h -- cgit v1.2.3 From ba07e3aacc08de2e6f6cd199c3618fbbc2c45f0c Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Sun, 23 Jun 2019 12:16:29 +0000 Subject: Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces Add documentation for the new attributes for exposing reset causes for the next type of resets: caused by different watchdog, BIOS reload, ASIC reset request. Signed-off-by: Vadim Pasternak Signed-off-by: Andy Shevchenko --- Documentation/ABI/stable/sysfs-driver-mlxreg-io | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'Documentation') diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io index 156319fc5b80..28ca00cc8d6b 100644 --- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io +++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io @@ -127,3 +127,23 @@ Description: These files show the system reset cause, as following: ComEx the last reset cause. The files are read only. + +Date: June 2019 +KernelVersion: 5.3 +Contact: Vadim Pasternak +Description: These files show the system reset cause, as following: + COMEX thermal shutdown; wathchdog power off or reset was derived + by one of the next components: COMEX, switch board or by Small Form + Factor mezzanine, reset requested from ASIC, reset cuased by BIOS + reload. Value 1 in file means this is reset cause, 0 - otherwise. + Only one of the above causes could be 1 at the same time, representing + only last reset cause. + + The files are read only. + +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_thermal +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd -- cgit v1.2.3