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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 17:25:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 17:25:10 -0700
commit43c40df2c7fedce640a6c39fcdf58764f6bbac5c (patch)
treebb55c6ad7db5d91f6066d2c4e36d270522ff27d0 /drivers/hid
parent7385d6fd88dd7981cdef8aa91e46570e5ba068c8 (diff)
parente661c8978e4833d4148d08b405a2f3175d6f97d9 (diff)
downloadop-kernel-dev-43c40df2c7fedce640a6c39fcdf58764f6bbac5c.zip
op-kernel-dev-43c40df2c7fedce640a6c39fcdf58764f6bbac5c.tar.gz
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED updates from Bryan Wu: "This cycle we got: - a fix of attribute-creation race for the whole leds subsystem - new drivers (HID:GT683R, leds-ipaq-micro) - other fixing and clean up" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (23 commits) leds: ipaq-micro: fix sparse non static symbol warning leds: add driver for the iPAQ micro Documentation: dts: tcs6507: Fix wrong statement about #gpio-cells leds: convert blink timer to workqueue leds:pca963x: Update for PCA9635 and correct statement about MODE2 OUTDRV default leds:pca963x: Always initialize MODE2 register leds:pca963x: Add support for PCA9635 LED driver chip HID: gt683r: move mode attribute to led-class devices HID: gt683r: fix race condition HID: add support for MSI GT683R led panels leds: lp55xx-common: fix attribute-creation race leds: lp55xx-common: fix sysfs entry leak input: lm8323: fix attribute-creation race leds: wm831x-status: fix attribute-creation race leds: ss4200: fix attribute-creation race leds: ns2: fix attribute-creation race leds: netxbig: fix attribute-creation race leds: max8997: fix attribute-creation race leds: lm3642: fix attribute-creation race leds: lm355x: fix attribute-creation race ...
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/Kconfig14
-rw-r--r--drivers/hid/Makefile1
-rw-r--r--drivers/hid/hid-core.c1
-rw-r--r--drivers/hid/hid-gt683r.c321
-rw-r--r--drivers/hid/hid-ids.h2
-rw-r--r--drivers/hid/usbhid/hid-quirks.c2
6 files changed, 339 insertions, 2 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index e02cf59..ec48c82 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -261,6 +261,20 @@ config HOLTEK_FF
Say Y here if you have a Holtek On Line Grip based game controller
and want to have force feedback support for it.
+config HID_GT683R
+ tristate "MSI GT68xR LED support"
+ depends on LEDS_CLASS && USB_HID
+ ---help---
+ Say Y here if you want to enable support for the three MSI GT68xR LEDs
+
+ This driver support following modes:
+ - Normal: LEDs are fully on when enabled
+ - Audio: LEDs brightness depends on sound level
+ - Breathing: LEDs brightness varies at human breathing rate
+
+ Currently the following devices are know to be supported:
+ - MSI GT683R
+
config HID_HUION
tristate "Huion tablets"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 5e96be3..a69f0ad 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_HID_EMS_FF) += hid-emsff.o
obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
obj-$(CONFIG_HID_ELO) += hid-elo.o
obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
+obj-$(CONFIG_HID_GT683R) += hid-gt683r.o
obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
obj-$(CONFIG_HID_HOLTEK) += hid-holtek-kbd.o
obj-$(CONFIG_HID_HOLTEK) += hid-holtek-mouse.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 6c813c6..b52baa1 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1849,6 +1849,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
diff --git a/drivers/hid/hid-gt683r.c b/drivers/hid/hid-gt683r.c
new file mode 100644
index 0000000..0d6f135
--- /dev/null
+++ b/drivers/hid/hid-gt683r.c
@@ -0,0 +1,321 @@
+/*
+ * MSI GT683R led driver
+ *
+ * Copyright (c) 2014 Janne Kanniainen <janne.kanniainen@gmail.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.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define GT683R_BUFFER_SIZE 8
+
+/*
+ * GT683R_LED_OFF: all LEDs are off
+ * GT683R_LED_AUDIO: LEDs brightness depends on sound level
+ * GT683R_LED_BREATHING: LEDs brightness varies at human breathing rate
+ * GT683R_LED_NORMAL: LEDs are fully on when enabled
+ */
+enum gt683r_led_mode {
+ GT683R_LED_OFF = 0,
+ GT683R_LED_AUDIO = 2,
+ GT683R_LED_BREATHING = 3,
+ GT683R_LED_NORMAL = 5
+};
+
+enum gt683r_panels {
+ GT683R_LED_BACK = 0,
+ GT683R_LED_SIDE = 1,
+ GT683R_LED_FRONT = 2,
+ GT683R_LED_COUNT,
+};
+
+static const char * const gt683r_panel_names[] = {
+ "back",
+ "side",
+ "front",
+};
+
+struct gt683r_led {
+ struct hid_device *hdev;
+ struct led_classdev led_devs[GT683R_LED_COUNT];
+ struct mutex lock;
+ struct work_struct work;
+ enum led_brightness brightnesses[GT683R_LED_COUNT];
+ enum gt683r_led_mode mode;
+};
+
+static const struct hid_device_id gt683r_led_id[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
+ { }
+};
+
+static void gt683r_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ int i;
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct gt683r_led *led = hid_get_drvdata(hdev);
+
+ for (i = 0; i < GT683R_LED_COUNT; i++) {
+ if (led_cdev == &led->led_devs[i])
+ break;
+ }
+
+ if (i < GT683R_LED_COUNT) {
+ led->brightnesses[i] = brightness;
+ schedule_work(&led->work);
+ }
+}
+
+static ssize_t mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ u8 sysfs_mode;
+ struct hid_device *hdev = container_of(dev->parent,
+ struct hid_device, dev);
+ struct gt683r_led *led = hid_get_drvdata(hdev);
+
+ if (led->mode == GT683R_LED_NORMAL)
+ sysfs_mode = 0;
+ else if (led->mode == GT683R_LED_AUDIO)
+ sysfs_mode = 1;
+ else
+ sysfs_mode = 2;
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", sysfs_mode);
+}
+
+static ssize_t mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u8 sysfs_mode;
+ struct hid_device *hdev = container_of(dev->parent,
+ struct hid_device, dev);
+ struct gt683r_led *led = hid_get_drvdata(hdev);
+
+
+ if (kstrtou8(buf, 10, &sysfs_mode) || sysfs_mode > 2)
+ return -EINVAL;
+
+ mutex_lock(&led->lock);
+
+ if (sysfs_mode == 0)
+ led->mode = GT683R_LED_NORMAL;
+ else if (sysfs_mode == 1)
+ led->mode = GT683R_LED_AUDIO;
+ else
+ led->mode = GT683R_LED_BREATHING;
+
+ mutex_unlock(&led->lock);
+ schedule_work(&led->work);
+
+ return count;
+}
+
+static int gt683r_led_snd_msg(struct gt683r_led *led, u8 *msg)
+{
+ int ret;
+
+ ret = hid_hw_raw_request(led->hdev, msg[0], msg, GT683R_BUFFER_SIZE,
+ HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
+ if (ret != GT683R_BUFFER_SIZE) {
+ hid_err(led->hdev,
+ "failed to send set report request: %i\n", ret);
+ if (ret < 0)
+ return ret;
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int gt683r_leds_set(struct gt683r_led *led, u8 leds)
+{
+ int ret;
+ u8 *buffer;
+
+ buffer = kzalloc(GT683R_BUFFER_SIZE, GFP_KERNEL);
+ if (!buffer)
+ return -ENOMEM;
+
+ buffer[0] = 0x01;
+ buffer[1] = 0x02;
+ buffer[2] = 0x30;
+ buffer[3] = leds;
+ ret = gt683r_led_snd_msg(led, buffer);
+
+ kfree(buffer);
+ return ret;
+}
+
+static int gt683r_mode_set(struct gt683r_led *led, u8 mode)
+{
+ int ret;
+ u8 *buffer;
+
+ buffer = kzalloc(GT683R_BUFFER_SIZE, GFP_KERNEL);
+ if (!buffer)
+ return -ENOMEM;
+
+ buffer[0] = 0x01;
+ buffer[1] = 0x02;
+ buffer[2] = 0x20;
+ buffer[3] = mode;
+ buffer[4] = 0x01;
+ ret = gt683r_led_snd_msg(led, buffer);
+
+ kfree(buffer);
+ return ret;
+}
+
+static void gt683r_led_work(struct work_struct *work)
+{
+ int i;
+ u8 leds = 0;
+ u8 mode;
+ struct gt683r_led *led = container_of(work, struct gt683r_led, work);
+
+ mutex_lock(&led->lock);
+
+ for (i = 0; i < GT683R_LED_COUNT; i++) {
+ if (led->brightnesses[i])
+ leds |= BIT(i);
+ }
+
+ if (gt683r_leds_set(led, leds))
+ goto fail;
+
+ if (leds)
+ mode = led->mode;
+ else
+ mode = GT683R_LED_OFF;
+
+ gt683r_mode_set(led, mode);
+fail:
+ mutex_unlock(&led->lock);
+}
+
+static DEVICE_ATTR_RW(mode);
+
+static struct attribute *gt683r_led_attrs[] = {
+ &dev_attr_mode.attr,
+ NULL
+};
+
+static const struct attribute_group gt683r_led_group = {
+ .name = "gt683r",
+ .attrs = gt683r_led_attrs,
+};
+
+static const struct attribute_group *gt683r_led_groups[] = {
+ &gt683r_led_group,
+ NULL
+};
+
+static int gt683r_led_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int i;
+ int ret;
+ int name_sz;
+ char *name;
+ struct gt683r_led *led;
+
+ led = devm_kzalloc(&hdev->dev, sizeof(*led), GFP_KERNEL);
+ if (!led)
+ return -ENOMEM;
+
+ mutex_init(&led->lock);
+ INIT_WORK(&led->work, gt683r_led_work);
+
+ led->mode = GT683R_LED_NORMAL;
+ led->hdev = hdev;
+ hid_set_drvdata(hdev, led);
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "hid parsing failed\n");
+ return ret;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
+ if (ret) {
+ hid_err(hdev, "hw start failed\n");
+ return ret;
+ }
+
+ for (i = 0; i < GT683R_LED_COUNT; i++) {
+ name_sz = strlen(dev_name(&hdev->dev)) +
+ strlen(gt683r_panel_names[i]) + 3;
+
+ name = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
+ if (!name) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ snprintf(name, name_sz, "%s::%s",
+ dev_name(&hdev->dev), gt683r_panel_names[i]);
+ led->led_devs[i].name = name;
+ led->led_devs[i].max_brightness = 1;
+ led->led_devs[i].brightness_set = gt683r_brightness_set;
+ led->led_devs[i].groups = gt683r_led_groups;
+
+ ret = led_classdev_register(&hdev->dev, &led->led_devs[i]);
+ if (ret) {
+ hid_err(hdev, "could not register led device\n");
+ goto fail;
+ }
+ }
+
+ return 0;
+
+fail:
+ for (i = i - 1; i >= 0; i--)
+ led_classdev_unregister(&led->led_devs[i]);
+ hid_hw_stop(hdev);
+ return ret;
+}
+
+static void gt683r_led_remove(struct hid_device *hdev)
+{
+ int i;
+ struct gt683r_led *led = hid_get_drvdata(hdev);
+
+ for (i = 0; i < GT683R_LED_COUNT; i++)
+ led_classdev_unregister(&led->led_devs[i]);
+ flush_work(&led->work);
+ hid_hw_stop(hdev);
+}
+
+static struct hid_driver gt683r_led_driver = {
+ .probe = gt683r_led_probe,
+ .remove = gt683r_led_remove,
+ .name = "gt683r_led",
+ .id_table = gt683r_led_id,
+};
+
+module_hid_driver(gt683r_led_driver);
+
+MODULE_AUTHOR("Janne Kanniainen");
+MODULE_DESCRIPTION("MSI GT683R led driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d53bdda..25cd674 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -650,7 +650,7 @@
#define USB_DEVICE_ID_GENIUS_KB29E 0x3004
#define USB_VENDOR_ID_MSI 0x1770
-#define USB_DEVICE_ID_MSI_GX680R_LED_PANEL 0xff00
+#define USB_DEVICE_ID_MSI_GT683R_LED_PANEL 0xff00
#define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400
#define USB_DEVICE_ID_N_S_HARMONY 0xc359
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 0dd5681..15225f3 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -74,7 +74,7 @@ static const struct hid_blacklist {
{ USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS },
{ USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET },
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET },
- { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS },
+ { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS },
{ USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS },
{ USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS },
{ USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET },
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