From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 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 ... --- drivers/input/misc/qnap-mcu-input.c | 153 ++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 drivers/input/misc/qnap-mcu-input.c (limited to 'drivers/input/misc/qnap-mcu-input.c') diff --git a/drivers/input/misc/qnap-mcu-input.c b/drivers/input/misc/qnap-mcu-input.c new file mode 100644 index 000000000..3be899bfc --- /dev/null +++ b/drivers/input/misc/qnap-mcu-input.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* + * Driver for input events on QNAP-MCUs + * + * Copyright (C) 2024 Heiko Stuebner + */ + +#include +#include +#include +#include +#include +#include + +/* + * The power-key needs to be pressed for a while to create an event, + * so there is no use for overly frequent polling. + */ +#define POLL_INTERVAL 500 + +struct qnap_mcu_input_dev { + struct input_dev *input; + struct qnap_mcu *mcu; + struct device *dev; + + struct work_struct beep_work; + int beep_type; +}; + +static void qnap_mcu_input_poll(struct input_dev *input) +{ + struct qnap_mcu_input_dev *idev = input_get_drvdata(input); + static const u8 cmd[] = { '@', 'C', 'V' }; + u8 reply[4]; + int state, ret; + + /* poll the power button */ + ret = qnap_mcu_exec(idev->mcu, cmd, sizeof(cmd), reply, sizeof(reply)); + if (ret) + return; + + /* First bytes must mirror the sent command */ + if (memcmp(cmd, reply, sizeof(cmd))) { + dev_err(idev->dev, "malformed data received\n"); + return; + } + + state = reply[3] - 0x30; + input_event(input, EV_KEY, KEY_POWER, state); + input_sync(input); +} + +static void qnap_mcu_input_beeper_work(struct work_struct *work) +{ + struct qnap_mcu_input_dev *idev = + container_of(work, struct qnap_mcu_input_dev, beep_work); + const u8 cmd[] = { '@', 'C', (idev->beep_type == SND_TONE) ? '3' : '2' }; + + qnap_mcu_exec_with_ack(idev->mcu, cmd, sizeof(cmd)); +} + +static int qnap_mcu_input_event(struct input_dev *input, unsigned int type, + unsigned int code, int value) +{ + struct qnap_mcu_input_dev *idev = input_get_drvdata(input); + + if (type != EV_SND || (code != SND_BELL && code != SND_TONE)) + return -EOPNOTSUPP; + + if (value < 0) + return -EINVAL; + + /* beep runtime is determined by the MCU */ + if (value == 0) + return 0; + + /* Schedule work to actually turn the beeper on */ + idev->beep_type = code; + schedule_work(&idev->beep_work); + + return 0; +} + +static void qnap_mcu_input_close(struct input_dev *input) +{ + struct qnap_mcu_input_dev *idev = input_get_drvdata(input); + + cancel_work_sync(&idev->beep_work); +} + +static int qnap_mcu_input_probe(struct platform_device *pdev) +{ + struct qnap_mcu *mcu = dev_get_drvdata(pdev->dev.parent); + struct qnap_mcu_input_dev *idev; + struct device *dev = &pdev->dev; + struct input_dev *input; + int ret; + + idev = devm_kzalloc(dev, sizeof(*idev), GFP_KERNEL); + if (!idev) + return -ENOMEM; + + input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + + idev->input = input; + idev->dev = dev; + idev->mcu = mcu; + + input_set_drvdata(input, idev); + + input->name = "qnap-mcu"; + input->phys = "qnap-mcu-input/input0"; + input->id.bustype = BUS_HOST; + input->id.vendor = 0x0001; + input->id.product = 0x0001; + input->id.version = 0x0100; + input->event = qnap_mcu_input_event; + input->close = qnap_mcu_input_close; + + input_set_capability(input, EV_KEY, KEY_POWER); + input_set_capability(input, EV_SND, SND_BELL); + input_set_capability(input, EV_SND, SND_TONE); + + INIT_WORK(&idev->beep_work, qnap_mcu_input_beeper_work); + + ret = input_setup_polling(input, qnap_mcu_input_poll); + if (ret) + return dev_err_probe(dev, ret, "unable to set up polling\n"); + + input_set_poll_interval(input, POLL_INTERVAL); + + ret = input_register_device(input); + if (ret) + return dev_err_probe(dev, ret, "unable to register input device\n"); + + return 0; +} + +static struct platform_driver qnap_mcu_input_driver = { + .probe = qnap_mcu_input_probe, + .driver = { + .name = "qnap-mcu-input", + }, +}; +module_platform_driver(qnap_mcu_input_driver); + +MODULE_ALIAS("platform:qnap-mcu-input"); +MODULE_AUTHOR("Heiko Stuebner "); +MODULE_DESCRIPTION("QNAP MCU input driver"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1