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
  ...

1 files changed, 245 insertions, 0 deletions

diff --git a/Documentation/input/uinput.rst b/Documentation/input/uinput.rst
new file mode 100644
index 000000000..30fe80e32
--- /dev/null
+++ b/Documentation/input/uinput.rst
@@ -0,0 +1,245 @@
+=============
+uinput module
+=============
+
+Introduction
+============
+
+uinput is a kernel module that makes it possible to emulate input devices
+from userspace. By writing to /dev/uinput (or /dev/input/uinput) device, a
+process can create a virtual input device with specific capabilities. Once
+this virtual device is created, the process can send events through it,
+that will be delivered to userspace and in-kernel consumers.
+
+Interface
+=========
+
+::
+
+  linux/uinput.h
+
+The uinput header defines ioctls to create, set up, and destroy virtual
+devices.
+
+libevdev
+========
+
+libevdev is a wrapper library for evdev devices that provides interfaces to
+create uinput devices and send events. libevdev is less error-prone than
+accessing uinput directly, and should be considered for new software.
+
+For examples and more information about libevdev:
+https://www.freedesktop.org/software/libevdev/doc/latest/
+
+Examples
+========
+
+Keyboard events
+---------------
+
+This first example shows how to create a new virtual device, and how to
+send a key event. All default imports and error handlers were removed for
+the sake of simplicity.
+
+.. code-block:: c
+
+   #include <linux/uinput.h>
+
+   void emit(int fd, int type, int code, int val)
+   {
+      struct input_event ie;
+
+      ie.type = type;
+      ie.code = code;
+      ie.value = val;
+      /* timestamp values below are ignored */
+      ie.time.tv_sec = 0;
+      ie.time.tv_usec = 0;
+
+      write(fd, &ie, sizeof(ie));
+   }
+
+   int main(void)
+   {
+      struct uinput_setup usetup;
+
+      int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
+
+
+      /*
+       * The ioctls below will enable the device that is about to be
+       * created, to pass key events, in this case the space key.
+       */
+      ioctl(fd, UI_SET_EVBIT, EV_KEY);
+      ioctl(fd, UI_SET_KEYBIT, KEY_SPACE);
+
+      memset(&usetup, 0, sizeof(usetup));
+      usetup.id.bustype = BUS_USB;
+      usetup.id.vendor = 0x1234; /* sample vendor */
+      usetup.id.product = 0x5678; /* sample product */
+      strcpy(usetup.name, "Example device");
+
+      ioctl(fd, UI_DEV_SETUP, &usetup);
+      ioctl(fd, UI_DEV_CREATE);
+
+      /*
+       * On UI_DEV_CREATE the kernel will create the device node for this
+       * device. We are inserting a pause here so that userspace has time
+       * to detect, initialize the new device, and can start listening to
+       * the event, otherwise it will not notice the event we are about
+       * to send. This pause is only needed in our example code!
+       */
+      sleep(1);
+
+      /* Key press, report the event, send key release, and report again */
+      emit(fd, EV_KEY, KEY_SPACE, 1);
+      emit(fd, EV_SYN, SYN_REPORT, 0);
+      emit(fd, EV_KEY, KEY_SPACE, 0);
+      emit(fd, EV_SYN, SYN_REPORT, 0);
+
+      /*
+       * Give userspace some time to read the events before we destroy the
+       * device with UI_DEV_DESTROY.
+       */
+      sleep(1);
+
+      ioctl(fd, UI_DEV_DESTROY);
+      close(fd);
+
+      return 0;
+   }
+
+Mouse movements
+---------------
+
+This example shows how to create a virtual device that behaves like a physical
+mouse.
+
+.. code-block:: c
+
+   #include <linux/uinput.h>
+
+   /* emit function is identical to of the first example */
+
+   int main(void)
+   {
+      struct uinput_setup usetup;
+      int i = 50;
+
+      int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
+
+      /* enable mouse button left and relative events */
+      ioctl(fd, UI_SET_EVBIT, EV_KEY);
+      ioctl(fd, UI_SET_KEYBIT, BTN_LEFT);
+
+      ioctl(fd, UI_SET_EVBIT, EV_REL);
+      ioctl(fd, UI_SET_RELBIT, REL_X);
+      ioctl(fd, UI_SET_RELBIT, REL_Y);
+
+      memset(&usetup, 0, sizeof(usetup));
+      usetup.id.bustype = BUS_USB;
+      usetup.id.vendor = 0x1234; /* sample vendor */
+      usetup.id.product = 0x5678; /* sample product */
+      strcpy(usetup.name, "Example device");
+
+      ioctl(fd, UI_DEV_SETUP, &usetup);
+      ioctl(fd, UI_DEV_CREATE);
+
+      /*
+       * On UI_DEV_CREATE the kernel will create the device node for this
+       * device. We are inserting a pause here so that userspace has time
+       * to detect, initialize the new device, and can start listening to
+       * the event, otherwise it will not notice the event we are about
+       * to send. This pause is only needed in our example code!
+       */
+      sleep(1);
+
+      /* Move the mouse diagonally, 5 units per axis */
+      while (i--) {
+         emit(fd, EV_REL, REL_X, 5);
+         emit(fd, EV_REL, REL_Y, 5);
+         emit(fd, EV_SYN, SYN_REPORT, 0);
+         usleep(15000);
+      }
+
+      /*
+       * Give userspace some time to read the events before we destroy the
+       * device with UI_DEV_DESTROY.
+       */
+      sleep(1);
+
+      ioctl(fd, UI_DEV_DESTROY);
+      close(fd);
+
+      return 0;
+   }
+
+
+uinput old interface
+--------------------
+
+Before uinput version 5, there wasn't a dedicated ioctl to set up a virtual
+device. Programs supporting older versions of uinput interface need to fill
+a uinput_user_dev structure and write it to the uinput file descriptor to
+configure the new uinput device. New code should not use the old interface
+but interact with uinput via ioctl calls, or use libevdev.
+
+.. code-block:: c
+
+   #include <linux/uinput.h>
+
+   /* emit function is identical to of the first example */
+
+   int main(void)
+   {
+      struct uinput_user_dev uud;
+      int version, rc, fd;
+
+      fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
+      rc = ioctl(fd, UI_GET_VERSION, &version);
+
+      if (rc == 0 && version >= 5) {
+         /* use UI_DEV_SETUP */
+         return 0;
+      }
+
+      /*
+       * The ioctls below will enable the device that is about to be
+       * created, to pass key events, in this case the space key.
+       */
+      ioctl(fd, UI_SET_EVBIT, EV_KEY);
+      ioctl(fd, UI_SET_KEYBIT, KEY_SPACE);
+
+      memset(&uud, 0, sizeof(uud));
+      snprintf(uud.name, UINPUT_MAX_NAME_SIZE, "uinput old interface");
+      write(fd, &uud, sizeof(uud));
+
+      ioctl(fd, UI_DEV_CREATE);
+
+      /*
+       * On UI_DEV_CREATE the kernel will create the device node for this
+       * device. We are inserting a pause here so that userspace has time
+       * to detect, initialize the new device, and can start listening to
+       * the event, otherwise it will not notice the event we are about
+       * to send. This pause is only needed in our example code!
+       */
+      sleep(1);
+
+      /* Key press, report the event, send key release, and report again */
+      emit(fd, EV_KEY, KEY_SPACE, 1);
+      emit(fd, EV_SYN, SYN_REPORT, 0);
+      emit(fd, EV_KEY, KEY_SPACE, 0);
+      emit(fd, EV_SYN, SYN_REPORT, 0);
+
+      /*
+       * Give userspace some time to read the events before we destroy the
+       * device with UI_DEV_DESTROY.
+       */
+      sleep(1);
+
+      ioctl(fd, UI_DEV_DESTROY);
+
+      close(fd);
+      return 0;
+   }
+