[v10] leds: USB: HID: Add support for MSI GT683R led panels

Message ID	1403543808-8228-1-git-send-email-janne.kanniainen@gmail.com (mailing list archive)
State	New, archived
Delegated to:	Jiri Kosina
Headers	show Return-Path: <linux-input-owner@kernel.org> From: Janne Kanniainen <janne.kanniainen@gmail.com> To: johan@kernel.org, greg@kroah.com, jkosina@suse.cz Cc: cooloney@gmail.com, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, linux-usb@vger.kernel.org, linux-input@vger.kernel.org, Janne Kanniainen <janne.kanniainen@gmail.com> Subject: [PATCH v10] leds: USB: HID: Add support for MSI GT683R led panels Date: Mon, 23 Jun 2014 20:16:48 +0300 Message-Id: <1403543808-8228-1-git-send-email-janne.kanniainen@gmail.com> In-Reply-To: <20140623161723.GA20421@kroah.com> References: <20140623161723.GA20421@kroah.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk

diff --git a/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r b/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r new file mode 100644 index 0000000..317e9d5 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r @@ -0,0 +1,14 @@ +What: /sys/class/hidraw/<hidraw>/device/leds_mode +Date: Jun 2014 +KernelVersion: 3.17 +Contact: Janne Kanniainen <janne.kanniainen@gmail.com> +Description: + Set the mode of LEDs + + 0 - normal + 1 - audio + 2 - breathing + + Normal: LEDs are fully on when enabled + Audio: LEDs brightness depends on sound level + Breathing: LEDs brightness varies at human breathing rate \ No newline at end of file diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 7af9d0b..e2f4590 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 fc712dd..7129311 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 da52279..ec88fdb 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1827,6 +1827,7 @@ 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..5bd0113 --- /dev/null +++ b/drivers/hid/hid-gt683r.c @@ -0,0 +1,318 @@ +/* + * 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 leds_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u8 sysfs_mode; + struct hid_device *hdev = container_of(dev, 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 leds_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, 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(leds_mode); + +static struct attribute *gt683r_attributes[] = { + &dev_attr_leds_mode.attr, + NULL, +}; + +static struct attribute_group gt683r_attribute_group = { + .attrs = gt683r_attributes +}; + +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; + ret = led_classdev_register(&hdev->dev, &led->led_devs[i]); + if (ret) { + hid_err(hdev, "could not register led device\n"); + goto fail; + } + } + + ret = sysfs_create_group(&led->hdev->dev.kobj, &gt683r_attribute_group); + if (ret) { + hid_err(hdev, "failed to create sysfs attributes\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); + + sysfs_remove_group(&led->hdev->dev.kobj, &gt683r_attribute_group); + 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 34bb220..3692d37 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -641,7 +641,7 @@ #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 8e4ddb3..c640e1d 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -73,7 +73,7 @@ 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_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS },

[v10] leds: USB: HID: Add support for MSI GT683R led panels

Commit Message

Comments

Patch