diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/hid/hid-roccat-lua.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/hid/hid-roccat-lua.c')
| -rw-r--r-- | drivers/hid/hid-roccat-lua.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/hid/hid-roccat-lua.c b/drivers/hid/hid-roccat-lua.c new file mode 100644 index 000000000..8e35e1a06 --- /dev/null +++ b/drivers/hid/hid-roccat-lua.c @@ -0,0 +1,215 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Roccat Lua driver for Linux + * + * Copyright (c) 2012 Stefan Achatz <erazor_de@users.sourceforge.net> + */ + +/* + */ + +/* + * Roccat Lua is a gamer mouse which cpi, button and light settings can be + * configured. + */ + +#include <linux/device.h> +#include <linux/input.h> +#include <linux/hid.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/hid-roccat.h> +#include "hid-ids.h" +#include "hid-roccat-common.h" +#include "hid-roccat-lua.h" + +static ssize_t lua_sysfs_read(struct file *fp, struct kobject *kobj, + char *buf, loff_t off, size_t count, + size_t real_size, uint command) +{ + struct device *dev = kobj_to_dev(kobj); + struct lua_device *lua = hid_get_drvdata(dev_get_drvdata(dev)); + struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); + int retval; + + if (off >= real_size) + return 0; + + if (off != 0 || count != real_size) + return -EINVAL; + + mutex_lock(&lua->lua_lock); + retval = roccat_common2_receive(usb_dev, command, buf, real_size); + mutex_unlock(&lua->lua_lock); + + return retval ? retval : real_size; +} + +static ssize_t lua_sysfs_write(struct file *fp, struct kobject *kobj, + void const *buf, loff_t off, size_t count, + size_t real_size, uint command) +{ + struct device *dev = kobj_to_dev(kobj); + struct lua_device *lua = hid_get_drvdata(dev_get_drvdata(dev)); + struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); + int retval; + + if (off != 0 || count != real_size) + return -EINVAL; + + mutex_lock(&lua->lua_lock); + retval = roccat_common2_send(usb_dev, command, buf, real_size); + mutex_unlock(&lua->lua_lock); + + return retval ? retval : real_size; +} + +#define LUA_SYSFS_W(thingy, THINGY) \ +static ssize_t lua_sysfs_write_ ## thingy(struct file *fp, \ + struct kobject *kobj, const struct bin_attribute *attr, \ + char *buf, loff_t off, size_t count) \ +{ \ + return lua_sysfs_write(fp, kobj, buf, off, count, \ + LUA_SIZE_ ## THINGY, LUA_COMMAND_ ## THINGY); \ +} + +#define LUA_SYSFS_R(thingy, THINGY) \ +static ssize_t lua_sysfs_read_ ## thingy(struct file *fp, \ + struct kobject *kobj, const struct bin_attribute *attr, \ + char *buf, loff_t off, size_t count) \ +{ \ + return lua_sysfs_read(fp, kobj, buf, off, count, \ + LUA_SIZE_ ## THINGY, LUA_COMMAND_ ## THINGY); \ +} + +#define LUA_BIN_ATTRIBUTE_RW(thingy, THINGY) \ +LUA_SYSFS_W(thingy, THINGY) \ +LUA_SYSFS_R(thingy, THINGY) \ +static const struct bin_attribute lua_ ## thingy ## _attr = { \ + .attr = { .name = #thingy, .mode = 0660 }, \ + .size = LUA_SIZE_ ## THINGY, \ + .read = lua_sysfs_read_ ## thingy, \ + .write = lua_sysfs_write_ ## thingy \ +}; + +LUA_BIN_ATTRIBUTE_RW(control, CONTROL) + +static int lua_create_sysfs_attributes(struct usb_interface *intf) +{ + return sysfs_create_bin_file(&intf->dev.kobj, &lua_control_attr); +} + +static void lua_remove_sysfs_attributes(struct usb_interface *intf) +{ + sysfs_remove_bin_file(&intf->dev.kobj, &lua_control_attr); +} + +static int lua_init_lua_device_struct(struct usb_device *usb_dev, + struct lua_device *lua) +{ + mutex_init(&lua->lua_lock); + + return 0; +} + +static int lua_init_specials(struct hid_device *hdev) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + struct usb_device *usb_dev = interface_to_usbdev(intf); + struct lua_device *lua; + int retval; + + lua = kzalloc_obj(*lua); + if (!lua) { + hid_err(hdev, "can't alloc device descriptor\n"); + return -ENOMEM; + } + hid_set_drvdata(hdev, lua); + + retval = lua_init_lua_device_struct(usb_dev, lua); + if (retval) { + hid_err(hdev, "couldn't init struct lua_device\n"); + goto exit; + } + + retval = lua_create_sysfs_attributes(intf); + if (retval) { + hid_err(hdev, "cannot create sysfs files\n"); + goto exit; + } + + return 0; +exit: + kfree(lua); + return retval; +} + +static void lua_remove_specials(struct hid_device *hdev) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + struct lua_device *lua; + + lua_remove_sysfs_attributes(intf); + + lua = hid_get_drvdata(hdev); + kfree(lua); +} + +static int lua_probe(struct hid_device *hdev, + const struct hid_device_id *id) +{ + int retval; + + if (!hid_is_usb(hdev)) + return -EINVAL; + + retval = hid_parse(hdev); + if (retval) { + hid_err(hdev, "parse failed\n"); + goto exit; + } + + retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); + if (retval) { + hid_err(hdev, "hw start failed\n"); + goto exit; + } + + retval = lua_init_specials(hdev); + if (retval) { + hid_err(hdev, "couldn't install mouse\n"); + goto exit_stop; + } + + return 0; + +exit_stop: + hid_hw_stop(hdev); +exit: + return retval; +} + +static void lua_remove(struct hid_device *hdev) +{ + lua_remove_specials(hdev); + hid_hw_stop(hdev); +} + +static const struct hid_device_id lua_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) }, + { } +}; + +MODULE_DEVICE_TABLE(hid, lua_devices); + +static struct hid_driver lua_driver = { + .name = "lua", + .id_table = lua_devices, + .probe = lua_probe, + .remove = lua_remove +}; +module_hid_driver(lua_driver); + +MODULE_AUTHOR("Stefan Achatz"); +MODULE_DESCRIPTION("USB Roccat Lua driver"); +MODULE_LICENSE("GPL v2"); |
