diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /drivers/input/tablet/kbtab.c | |
| download | linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip | |
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij:
"Core changes:
- Use the non-blocking mux_state_try_select() in the generic MUX pin
control back-end
- Free pin maps on pinctrl_generic_to_map() failure in the core
helpers
New hardware pin control:
- Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
(this is for the low power audio, LPASS = Low Power Audio SubSystem
portions)
- Upboard support on top of the Intel pin controller
- Apple T6030 and T6031 support (just compatible strings)
- Samsung Exynos 8855 SoC
- Mediatek MT6858 SoC
- Rockchip RK3308B and RV1106 SoCs
- Airoha EN7523 and AN7563 SoCs
Improvements:
- Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable
- Qualcomm improvements on top of the Qualcomm PDC (power domain
controller) irqchip improvements from tglx:s tree
- Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups
- The NPCM8xx driver has been put into shape fixing many pin and
group definitions
- Some non-urgent Tegra 264 pin assignments are fixed up
- Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
pin assignments, missing features etc"
* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
pinctrl: meson: sync some modify from A4
pinctrl: meson: a4: Add input enable pin configuration
pinctrl: realtek: rtd1625: remove unused group name spdif_sel
pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
Revert "Merge branch 'ib-rsk7204' into devel"
pinctrl: rockchip: Add RV1106 pinctrl support
dt-bindings: pinctrl: rockchip: Add RV1106 compatible
pinctrl: rockchip: Decode drive strength in the get function
pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
pinctrl: airoha: add support of an7563 SoC
dt-bindings: pinctrl: airoha: add support of an7563 pin controller
pinctrl: airoha: try to find chip scu node by phandle first
pinctrl: airoha: add support of en7523 SoC
dt-bindings: pinctrl: airoha: add support of en7523 pin controller
pinctrl: airoha: an7583: add support for olt pinmux
pinctrl: airoha: an7583: add support for pon_alt pinmux
pinctrl: airoha: an7583: add support for npu_uart pinmux
dt-bindings: pinctrl: airoha: an7583: add missed features
...
Diffstat (limited to 'drivers/input/tablet/kbtab.c')
| -rw-r--r-- | drivers/input/tablet/kbtab.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/drivers/input/tablet/kbtab.c b/drivers/input/tablet/kbtab.c new file mode 100644 index 000000000..6ce70c8e2 --- /dev/null +++ b/drivers/input/tablet/kbtab.c @@ -0,0 +1,204 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/usb/input.h> +#include <linux/unaligned.h> + +/* + * Pressure-threshold modules param code from Alex Perry <alex.perry@ieee.org> + */ + +MODULE_AUTHOR("Josh Myer <josh@joshisanerd.com>"); +MODULE_DESCRIPTION("USB KB Gear JamStudio Tablet driver"); +MODULE_LICENSE("GPL"); + +#define USB_VENDOR_ID_KBGEAR 0x084e + +static int kb_pressure_click = 0x10; +module_param(kb_pressure_click, int, 0); +MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks"); + +struct kbtab { + unsigned char *data; + dma_addr_t data_dma; + struct input_dev *dev; + struct usb_interface *intf; + struct urb *irq; + char phys[32]; +}; + +static void kbtab_irq(struct urb *urb) +{ + struct kbtab *kbtab = urb->context; + unsigned char *data = kbtab->data; + struct input_dev *dev = kbtab->dev; + int pressure; + int retval; + + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dev_dbg(&kbtab->intf->dev, + "%s - urb shutting down with status: %d\n", + __func__, urb->status); + return; + default: + dev_dbg(&kbtab->intf->dev, + "%s - nonzero urb status received: %d\n", + __func__, urb->status); + goto exit; + } + + + input_report_key(dev, BTN_TOOL_PEN, 1); + + input_report_abs(dev, ABS_X, get_unaligned_le16(&data[1])); + input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[3])); + + /*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/ + input_report_key(dev, BTN_RIGHT, data[0] & 0x02); + + pressure = data[5]; + if (kb_pressure_click == -1) + input_report_abs(dev, ABS_PRESSURE, pressure); + else + input_report_key(dev, BTN_LEFT, pressure > kb_pressure_click ? 1 : 0); + + input_sync(dev); + + exit: + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) + dev_err(&kbtab->intf->dev, + "%s - usb_submit_urb failed with result %d\n", + __func__, retval); +} + +static const struct usb_device_id kbtab_ids[] = { + { USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 }, + { } +}; + +MODULE_DEVICE_TABLE(usb, kbtab_ids); + +static int kbtab_open(struct input_dev *dev) +{ + struct kbtab *kbtab = input_get_drvdata(dev); + struct usb_device *udev = interface_to_usbdev(kbtab->intf); + + kbtab->irq->dev = udev; + if (usb_submit_urb(kbtab->irq, GFP_KERNEL)) + return -EIO; + + return 0; +} + +static void kbtab_close(struct input_dev *dev) +{ + struct kbtab *kbtab = input_get_drvdata(dev); + + usb_kill_urb(kbtab->irq); +} + +static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_endpoint_descriptor *endpoint; + struct kbtab *kbtab; + struct input_dev *input_dev; + int error = -ENOMEM; + + if (intf->cur_altsetting->desc.bNumEndpoints < 1) + return -ENODEV; + + endpoint = &intf->cur_altsetting->endpoint[0].desc; + if (!usb_endpoint_is_int_in(endpoint)) + return -ENODEV; + + kbtab = kzalloc_obj(*kbtab); + input_dev = input_allocate_device(); + if (!kbtab || !input_dev) + goto fail1; + + kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma); + if (!kbtab->data) + goto fail1; + + kbtab->irq = usb_alloc_urb(0, GFP_KERNEL); + if (!kbtab->irq) + goto fail2; + + kbtab->intf = intf; + kbtab->dev = input_dev; + + usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys)); + strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys)); + + input_dev->name = "KB Gear Tablet"; + input_dev->phys = kbtab->phys; + usb_to_input_id(dev, &input_dev->id); + input_dev->dev.parent = &intf->dev; + + input_set_drvdata(input_dev, kbtab); + + input_dev->open = kbtab_open; + input_dev->close = kbtab_close; + + input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_LEFT)] |= + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); + input_dev->keybit[BIT_WORD(BTN_DIGI)] |= + BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH); + input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0); + input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0); + + usb_fill_int_urb(kbtab->irq, dev, + usb_rcvintpipe(dev, endpoint->bEndpointAddress), + kbtab->data, 8, + kbtab_irq, kbtab, endpoint->bInterval); + kbtab->irq->transfer_dma = kbtab->data_dma; + kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + error = input_register_device(kbtab->dev); + if (error) + goto fail3; + + usb_set_intfdata(intf, kbtab); + + return 0; + + fail3: usb_free_urb(kbtab->irq); + fail2: usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma); + fail1: input_free_device(input_dev); + kfree(kbtab); + return error; +} + +static void kbtab_disconnect(struct usb_interface *intf) +{ + struct kbtab *kbtab = usb_get_intfdata(intf); + struct usb_device *udev = interface_to_usbdev(intf); + + usb_set_intfdata(intf, NULL); + + input_unregister_device(kbtab->dev); + usb_free_urb(kbtab->irq); + usb_free_coherent(udev, 8, kbtab->data, kbtab->data_dma); + kfree(kbtab); +} + +static struct usb_driver kbtab_driver = { + .name = "kbtab", + .probe = kbtab_probe, + .disconnect = kbtab_disconnect, + .id_table = kbtab_ids, +}; + +module_usb_driver(kbtab_driver); |
