HID: remove ThingM blink(1) driver (38b09c03) · Commits · EulixOS / Software / Kernel

MAINTAINERS

+0 −5

Original line number	Diff line number	Diff line
		@@ -11042,11 +11042,6 @@ F: Documentation/thermal/cpu-cooling-api.txt
		F: drivers/thermal/cpu_cooling.c
		F: include/linux/cpu_cooling.h

		THINGM BLINK(1) USB RGB LED DRIVER
		M: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
		S: Maintained
		F: drivers/hid/hid-thingm.c

		THINKPAD ACPI EXTRAS DRIVER
		M: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>
		L: ibm-acpi-devel@lists.sourceforge.net

drivers/hid/Kconfig

+4 −4

Original line number	Diff line number	Diff line
		@@ -832,11 +832,11 @@ config HID_THINGM
		tristate "ThingM blink(1) USB RGB LED"
		depends on HID
		depends on LEDS_CLASS
		select HID_LED
		---help---
		Support for the ThingM blink(1) USB RGB LED. This driver registers a
		Linux LED class instance, plus additional sysfs attributes to control
		RGB colors, fade time and playing. The device is exposed through hidraw
		to access other functions.
		Support for the ThingM blink(1) USB RGB LED. This driver has been
		merged into the generic hid led driver. Config symbol HID_THINGM
		just selects HID_LED and will be removed soon.

		config HID_THRUSTMASTER
		tristate "ThrustMaster devices support"

drivers/hid/Makefile

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Original line number	Diff line number	Diff line
		@@ -90,7 +90,6 @@ obj-$(CONFIG_HID_SPEEDLINK) += hid-speedlink.o
		obj-$(CONFIG_HID_STEELSERIES) += hid-steelseries.o
		obj-$(CONFIG_HID_SUNPLUS) += hid-sunplus.o
		obj-$(CONFIG_HID_GREENASIA) += hid-gaff.o
		obj-$(CONFIG_HID_THINGM) += hid-thingm.o
		obj-$(CONFIG_HID_THRUSTMASTER) += hid-tmff.o
		obj-$(CONFIG_HID_TIVO) += hid-tivo.o
		obj-$(CONFIG_HID_TOPSEED) += hid-topseed.o

drivers/hid/hid-thingm.c

deleted100644 → 0

+0 −263

Original line number	Diff line number	Diff line
		/*
		* ThingM blink(1) USB RGB LED driver
		*
		* Copyright 2013-2014 Savoir-faire Linux Inc.
		* Vivien Didelot <vivien.didelot@savoirfairelinux.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, version 2.
		*/

		#include <linux/hid.h>
		#include <linux/hidraw.h>
		#include <linux/leds.h>
		#include <linux/module.h>
		#include <linux/mutex.h>

		#include "hid-ids.h"

		#define REPORT_ID 1
		#define REPORT_SIZE 9

		/* Firmware major number of supported devices */
		#define THINGM_MAJOR_MK1 '1'
		#define THINGM_MAJOR_MK2 '2'

		struct thingm_fwinfo {
		char major;
		unsigned numrgb;
		unsigned first;
		};

		static const struct thingm_fwinfo thingm_fwinfo[] = {
		{
		.major = THINGM_MAJOR_MK1,
		.numrgb = 1,
		.first = 0,
		}, {
		.major = THINGM_MAJOR_MK2,
		.numrgb = 2,
		.first = 1,
		}
		};

		/* A red, green or blue channel, part of an RGB chip */
		struct thingm_led {
		struct thingm_rgb *rgb;
		struct led_classdev ldev;
		char name[32];
		};

		/* Basically a WS2812 5050 RGB LED chip */
		struct thingm_rgb {
		struct thingm_device *tdev;
		struct thingm_led red;
		struct thingm_led green;
		struct thingm_led blue;
		u8 num;
		};

		struct thingm_device {
		struct hid_device *hdev;
		struct {
		char major;
		char minor;
		} version;
		const struct thingm_fwinfo *fwinfo;
		struct mutex lock;
		struct thingm_rgb *rgb;
		};

		static int thingm_send(struct thingm_device *tdev, u8 buf[REPORT_SIZE])
		{
		int ret;

		hid_dbg(tdev->hdev, "-> %d %c %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx\n",
		buf[0], buf[1], buf[2], buf[3], buf[4],
		buf[5], buf[6], buf[7], buf[8]);

		mutex_lock(&tdev->lock);

		ret = hid_hw_raw_request(tdev->hdev, buf[0], buf, REPORT_SIZE,
		HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

		mutex_unlock(&tdev->lock);

		return ret < 0 ? ret : 0;
		}

		static int thingm_recv(struct thingm_device *tdev, u8 buf[REPORT_SIZE])
		{
		int ret;

		/*
		* A read consists of two operations: sending the read command
		* and the actual read from the device. Use the mutex to protect
		* the full sequence of both operations.
		*/
		mutex_lock(&tdev->lock);

		ret = hid_hw_raw_request(tdev->hdev, buf[0], buf, REPORT_SIZE,
		HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
		if (ret < 0)
		goto err;

		ret = hid_hw_raw_request(tdev->hdev, buf[0], buf, REPORT_SIZE,
		HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
		if (ret < 0)
		goto err;

		ret = 0;

		hid_dbg(tdev->hdev, "<- %d %c %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx\n",
		buf[0], buf[1], buf[2], buf[3], buf[4],
		buf[5], buf[6], buf[7], buf[8]);
		err:
		mutex_unlock(&tdev->lock);
		return ret;
		}

		static int thingm_version(struct thingm_device *tdev)
		{
		u8 buf[REPORT_SIZE] = { REPORT_ID, 'v', 0, 0, 0, 0, 0, 0, 0 };
		int err;

		err = thingm_recv(tdev, buf);
		if (err)
		return err;

		tdev->version.major = buf[3];
		tdev->version.minor = buf[4];

		return 0;
		}

		static int thingm_write_color(struct thingm_rgb *rgb)
		{
		u8 buf[REPORT_SIZE] = { REPORT_ID, 'c', 0, 0, 0, 0, 0, rgb->num, 0 };

		buf[2] = rgb->red.ldev.brightness;
		buf[3] = rgb->green.ldev.brightness;
		buf[4] = rgb->blue.ldev.brightness;

		return thingm_send(rgb->tdev, buf);
		}

		static int thingm_led_set(struct led_classdev *ldev,
		enum led_brightness brightness)
		{
		struct thingm_led *led = container_of(ldev, struct thingm_led, ldev);

		return thingm_write_color(led->rgb);
		}

		static int thingm_init_led(struct thingm_led led, const char color_name,
		struct thingm_rgb *rgb, int minor)
		{
		snprintf(led->name, sizeof(led->name), "thingm%d:%s:led%d",
		minor, color_name, rgb->num);
		led->ldev.name = led->name;
		led->ldev.max_brightness = 255;
		led->ldev.brightness_set_blocking = thingm_led_set;
		led->ldev.flags = LED_HW_PLUGGABLE;
		led->rgb = rgb;
		return devm_led_classdev_register(&rgb->tdev->hdev->dev, &led->ldev);
		}

		static int thingm_init_rgb(struct thingm_rgb *rgb)
		{
		const int minor = ((struct hidraw *) rgb->tdev->hdev->hidraw)->minor;
		int err;

		/* Register the red diode */
		err = thingm_init_led(&rgb->red, "red", rgb, minor);
		if (err)
		return err;

		/* Register the green diode */
		err = thingm_init_led(&rgb->green, "green", rgb, minor);
		if (err)
		return err;

		/* Register the blue diode */
		return thingm_init_led(&rgb->blue, "blue", rgb, minor);
		}

		static int thingm_probe(struct hid_device hdev, const struct hid_device_id id)
		{
		struct thingm_device *tdev;
		int i, err;

		tdev = devm_kzalloc(&hdev->dev, sizeof(struct thingm_device),
		GFP_KERNEL);
		if (!tdev)
		return -ENOMEM;

		tdev->hdev = hdev;
		hid_set_drvdata(hdev, tdev);

		err = hid_parse(hdev);
		if (err)
		return err;

		mutex_init(&tdev->lock);

		err = thingm_version(tdev);
		if (err)
		return err;

		hid_dbg(hdev, "firmware version: %c.%c\n",
		tdev->version.major, tdev->version.minor);

		for (i = 0; i < ARRAY_SIZE(thingm_fwinfo) && !tdev->fwinfo; ++i)
		if (thingm_fwinfo[i].major == tdev->version.major)
		tdev->fwinfo = &thingm_fwinfo[i];

		if (!tdev->fwinfo) {
		hid_err(hdev, "unsupported firmware %c\n", tdev->version.major);
		return -ENODEV;
		}

		tdev->rgb = devm_kzalloc(&hdev->dev,
		sizeof(struct thingm_rgb) * tdev->fwinfo->numrgb,
		GFP_KERNEL);
		if (!tdev->rgb)
		return -ENOMEM;

		err = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
		if (err)
		return err;

		for (i = 0; i < tdev->fwinfo->numrgb; ++i) {
		struct thingm_rgb *rgb = tdev->rgb + i;

		rgb->tdev = tdev;
		rgb->num = tdev->fwinfo->first + i;
		err = thingm_init_rgb(rgb);
		if (err) {
		hid_hw_stop(hdev);
		return err;
		}
		}

		return 0;
		}

		static const struct hid_device_id thingm_table[] = {
		{ HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
		{ }
		};
		MODULE_DEVICE_TABLE(hid, thingm_table);

		static struct hid_driver thingm_driver = {
		.name = "thingm",
		.probe = thingm_probe,
		.id_table = thingm_table,
		};

		module_hid_driver(thingm_driver);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Vivien Didelot <vivien.didelot@savoirfairelinux.com>");
		MODULE_DESCRIPTION("ThingM blink(1) USB RGB LED driver");