From 2e210bbb7429cdcf1a1a3ad00c1bf98bd9bf2452 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 3 Apr 2018 10:52:20 -0700 Subject: HID: input: fix battery level reporting on BT mice The commit 581c4484769e ("HID: input: map digitizer battery usage") assumed that devices having input (qas opposed to feature) report for battery strength would report the data on their own, without the need to be polled by the kernel; unfortunately it is not so. Many wireless mice do not send unsolicited reports with battery strength data and have to be polled explicitly. As a complication, stylus devices on digitizers are not normally connected to the base and thus can not be polled - the base can only determine battery strength in the stylus when it is in proximity. To solve this issue, we add a special flag that tells the kernel to avoid polling the device (and expect unsolicited reports) and set it when report field with physical usage of digitizer stylus (HID_DG_STYLUS). Unless this flag is set, and we have not seen the unsolicited reports, the kernel will attempt to poll the device when userspace attempts to read "capacity" and "state" attributes of power_supply object corresponding to the devices battery. Fixes: 581c4484769e ("HID: input: map digitizer battery usage") Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198095 Cc: stable@vger.kernel.org Reported-and-tested-by: Martin van Es Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina --- drivers/hid/hid-input.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 6836a856c243..930652c25120 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -387,7 +387,8 @@ static int hidinput_get_battery_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_CAPACITY: - if (dev->battery_report_type == HID_FEATURE_REPORT) { + if (dev->battery_status != HID_BATTERY_REPORTED && + !dev->battery_avoid_query) { value = hidinput_query_battery_capacity(dev); if (value < 0) return value; @@ -403,17 +404,17 @@ static int hidinput_get_battery_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_STATUS: - if (!dev->battery_reported && - dev->battery_report_type == HID_FEATURE_REPORT) { + if (dev->battery_status != HID_BATTERY_REPORTED && + !dev->battery_avoid_query) { value = hidinput_query_battery_capacity(dev); if (value < 0) return value; dev->battery_capacity = value; - dev->battery_reported = true; + dev->battery_status = HID_BATTERY_QUERIED; } - if (!dev->battery_reported) + if (dev->battery_status == HID_BATTERY_UNKNOWN) val->intval = POWER_SUPPLY_STATUS_UNKNOWN; else if (dev->battery_capacity == 100) val->intval = POWER_SUPPLY_STATUS_FULL; @@ -486,6 +487,14 @@ static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, dev->battery_report_type = report_type; dev->battery_report_id = field->report->id; + /* + * Stylus is normally not connected to the device and thus we + * can't query the device and get meaningful battery strength. + * We have to wait for the device to report it on its own. + */ + dev->battery_avoid_query = report_type == HID_INPUT_REPORT && + field->physical == HID_DG_STYLUS; + dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); if (IS_ERR(dev->battery)) { error = PTR_ERR(dev->battery); @@ -530,9 +539,10 @@ static void hidinput_update_battery(struct hid_device *dev, int value) capacity = hidinput_scale_battery_capacity(dev, value); - if (!dev->battery_reported || capacity != dev->battery_capacity) { + if (dev->battery_status != HID_BATTERY_REPORTED || + capacity != dev->battery_capacity) { dev->battery_capacity = capacity; - dev->battery_reported = true; + dev->battery_status = HID_BATTERY_REPORTED; power_supply_changed(dev->battery); } } -- cgit v1.2.3 From a955358d54695e4ad9f7d6489a7ac4d69a8fc711 Mon Sep 17 00:00:00 2001 From: Rodrigo Rivas Costa Date: Fri, 6 Apr 2018 01:09:36 +0200 Subject: HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed device Doing `ioctl(HIDIOCGFEATURE)` in a tight loop on a hidraw device and then disconnecting the device, or unloading the driver, can cause a NULL pointer dereference. When a hidraw device is destroyed it sets 0 to `dev->exist`. Most functions check 'dev->exist' before doing its work, but `hidraw_get_report()` was missing that check. Cc: stable@vger.kernel.org Signed-off-by: Rodrigo Rivas Costa Signed-off-by: Jiri Kosina --- drivers/hid/hidraw.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index fbfcc8009432..b39844adea47 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -192,6 +192,11 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t int ret = 0, len; unsigned char report_number; + if (!hidraw_table[minor] || !hidraw_table[minor]->exist) { + ret = -ENODEV; + goto out; + } + dev = hidraw_table[minor]->hid; if (!dev->ll_driver->raw_request) { -- cgit v1.2.3 From 619d3a2922ce623ca2eca443cc936810d328317c Mon Sep 17 00:00:00 2001 From: Aaron Armstrong Skomra Date: Wed, 4 Apr 2018 14:24:11 -0700 Subject: HID: wacom: bluetooth: send exit report for recent Bluetooth devices The code path for recent Bluetooth devices omits an exit report which resets all the values of the device. Fixes: 4922cd26f0 ("HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface") Cc: # 4.11 Signed-off-by: Aaron Armstrong Skomra Reviewed-by: Ping Cheng Signed-off-by: Jiri Kosina --- drivers/hid/wacom_wac.c | 76 ++++++++++++++++++++++++++++++------------------- 1 file changed, 46 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 6da16a879c9f..5f947ec20dcb 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -689,6 +689,45 @@ static int wacom_intuos_get_tool_type(int tool_id) return tool_type; } +static void wacom_exit_report(struct wacom_wac *wacom) +{ + struct input_dev *input = wacom->pen_input; + struct wacom_features *features = &wacom->features; + unsigned char *data = wacom->data; + int idx = (features->type == INTUOS) ? (data[1] & 0x01) : 0; + + /* + * Reset all states otherwise we lose the initial states + * when in-prox next time + */ + input_report_abs(input, ABS_X, 0); + input_report_abs(input, ABS_Y, 0); + input_report_abs(input, ABS_DISTANCE, 0); + input_report_abs(input, ABS_TILT_X, 0); + input_report_abs(input, ABS_TILT_Y, 0); + if (wacom->tool[idx] >= BTN_TOOL_MOUSE) { + input_report_key(input, BTN_LEFT, 0); + input_report_key(input, BTN_MIDDLE, 0); + input_report_key(input, BTN_RIGHT, 0); + input_report_key(input, BTN_SIDE, 0); + input_report_key(input, BTN_EXTRA, 0); + input_report_abs(input, ABS_THROTTLE, 0); + input_report_abs(input, ABS_RZ, 0); + } else { + input_report_abs(input, ABS_PRESSURE, 0); + input_report_key(input, BTN_STYLUS, 0); + input_report_key(input, BTN_STYLUS2, 0); + input_report_key(input, BTN_TOUCH, 0); + input_report_abs(input, ABS_WHEEL, 0); + if (features->type >= INTUOS3S) + input_report_abs(input, ABS_Z, 0); + } + input_report_key(input, wacom->tool[idx], 0); + input_report_abs(input, ABS_MISC, 0); /* reset tool id */ + input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]); + wacom->id[idx] = 0; +} + static int wacom_intuos_inout(struct wacom_wac *wacom) { struct wacom_features *features = &wacom->features; @@ -741,36 +780,7 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) if (!wacom->id[idx]) return 1; - /* - * Reset all states otherwise we lose the initial states - * when in-prox next time - */ - input_report_abs(input, ABS_X, 0); - input_report_abs(input, ABS_Y, 0); - input_report_abs(input, ABS_DISTANCE, 0); - input_report_abs(input, ABS_TILT_X, 0); - input_report_abs(input, ABS_TILT_Y, 0); - if (wacom->tool[idx] >= BTN_TOOL_MOUSE) { - input_report_key(input, BTN_LEFT, 0); - input_report_key(input, BTN_MIDDLE, 0); - input_report_key(input, BTN_RIGHT, 0); - input_report_key(input, BTN_SIDE, 0); - input_report_key(input, BTN_EXTRA, 0); - input_report_abs(input, ABS_THROTTLE, 0); - input_report_abs(input, ABS_RZ, 0); - } else { - input_report_abs(input, ABS_PRESSURE, 0); - input_report_key(input, BTN_STYLUS, 0); - input_report_key(input, BTN_STYLUS2, 0); - input_report_key(input, BTN_TOUCH, 0); - input_report_abs(input, ABS_WHEEL, 0); - if (features->type >= INTUOS3S) - input_report_abs(input, ABS_Z, 0); - } - input_report_key(input, wacom->tool[idx], 0); - input_report_abs(input, ABS_MISC, 0); /* reset tool id */ - input_event(input, EV_MSC, MSC_SERIAL, wacom->serial[idx]); - wacom->id[idx] = 0; + wacom_exit_report(wacom); return 2; } @@ -1235,6 +1245,12 @@ static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom) if (!valid) continue; + if (!prox) { + wacom->shared->stylus_in_proximity = false; + wacom_exit_report(wacom); + input_sync(pen_input); + return; + } if (range) { input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1])); input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3])); -- cgit v1.2.3 From 3e83eda467050f13fa69d888993458b76e733de9 Mon Sep 17 00:00:00 2001 From: Aaron Ma Date: Mon, 9 Apr 2018 15:41:31 +0800 Subject: HID: i2c-hid: Fix resume issue on Raydium touchscreen device When Rayd touchscreen resumed from S3, it issues too many errors like: i2c_hid i2c-RAYD0001:00: i2c_hid_get_input: incomplete report (58/5442) And all the report data are corrupted, touchscreen is unresponsive. Fix this by re-sending report description command after resume. Add device ID as a quirk. Cc: stable@vger.kernel.org Signed-off-by: Aaron Ma Signed-off-by: Jiri Kosina --- drivers/hid/hid-ids.h | 3 +++ drivers/hid/i2c-hid/i2c-hid.c | 13 +++++++++++++ 2 files changed, 16 insertions(+) (limited to 'drivers') diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 5a3a7ead3012..0b5cc910f62e 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -525,6 +525,9 @@ #define I2C_VENDOR_ID_HANTICK 0x0911 #define I2C_PRODUCT_ID_HANTICK_5288 0x5288 +#define I2C_VENDOR_ID_RAYD 0x2386 +#define I2C_PRODUCT_ID_RAYD_3118 0x3118 + #define USB_VENDOR_ID_HANWANG 0x0b57 #define USB_DEVICE_ID_HANWANG_TABLET_FIRST 0x5000 #define USB_DEVICE_ID_HANWANG_TABLET_LAST 0x8fff diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index 97689e98e53f..615a91ac93bd 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -47,6 +47,7 @@ /* quirks to control the device */ #define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV BIT(0) #define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET BIT(1) +#define I2C_HID_QUIRK_RESEND_REPORT_DESCR BIT(2) /* flags */ #define I2C_HID_STARTED 0 @@ -171,6 +172,8 @@ static const struct i2c_hid_quirks { I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV }, { I2C_VENDOR_ID_HANTICK, I2C_PRODUCT_ID_HANTICK_5288, I2C_HID_QUIRK_NO_IRQ_AFTER_RESET }, + { I2C_VENDOR_ID_RAYD, I2C_PRODUCT_ID_RAYD_3118, + I2C_HID_QUIRK_RESEND_REPORT_DESCR }, { 0, 0 } }; @@ -1220,6 +1223,16 @@ static int i2c_hid_resume(struct device *dev) if (ret) return ret; + /* RAYDIUM device (2386:3118) need to re-send report descr cmd + * after resume, after this it will be back normal. + * otherwise it issues too many incomplete reports. + */ + if (ihid->quirks & I2C_HID_QUIRK_RESEND_REPORT_DESCR) { + ret = i2c_hid_command(client, &hid_report_descr_cmd, NULL, 0); + if (!ret) + return ret; + } + if (hid->driver && hid->driver->reset_resume) { ret = hid->driver->reset_resume(hid); return ret; -- cgit v1.2.3 From b658912cb023cd6f8e46963d29779903d3c10538 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Thu, 19 Apr 2018 09:25:15 +0200 Subject: HID: i2c-hid: fix inverted return value from i2c_hid_command() i2c_hid_command() returns non-zero in error cases (the actual errno). Error handling in for I2C_HID_QUIRK_RESEND_REPORT_DESCR case in i2c_hid_resume() had the check inverted; fix that. Fixes: 3e83eda467 ("HID: i2c-hid: Fix resume issue on Raydium touchscreen device") Reported-by: Dan Carpenter Signed-off-by: Jiri Kosina --- drivers/hid/i2c-hid/i2c-hid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index 615a91ac93bd..963328674e93 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -1229,7 +1229,7 @@ static int i2c_hid_resume(struct device *dev) */ if (ihid->quirks & I2C_HID_QUIRK_RESEND_REPORT_DESCR) { ret = i2c_hid_command(client, &hid_report_descr_cmd, NULL, 0); - if (!ret) + if (ret) return ret; } -- cgit v1.2.3