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SubjectRe: [PATCH 3/3] Enable high-resolution scrolling on Logitech mice
Hi Harry,

On Thu, Aug 23, 2018 at 8:31 PM Harry Cutts <hcutts@chromium.org> wrote:
>
> There are three features used by various Logitech mice for
> high-resolution scrolling: the fast scrolling bit in HID++ 1.0, and the
> x2120 and x2121 features in HID++ 2.0 and above. This patch supports
> all three, and uses the multiplier reported by the mouse for the HID++
> 2.0+ features.
>
> The full list of product IDs of mice which support high-resolution
> scrolling was provided by Logitech, but the patch was tested using the
> following mice (over both Bluetooth and Unifying where applicable):
>
> * HID++ 1.0: Anywhere MX, Performance MX
> * x2120: M560
> * x2121: MX Anywhere 2, MX Master 2S
>
> Signed-off-by: Harry Cutts <hcutts@chromium.org>

Patches 1 and 2 look fine (I'd rather have the micrometers too).
I have more concerns about this one.
My main issue is that this patch both reshuffle existing parts and add
new features, which makes it hard to review.

> ---
>
> drivers/hid/hid-ids.h | 15 ++
> drivers/hid/hid-logitech-hidpp.c | 341 ++++++++++++++++++++++++++++---
> drivers/hid/hid-quirks.c | 11 +
> 3 files changed, 340 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
> index 79bdf0c7e351..64fbe6174189 100644
> --- a/drivers/hid/hid-ids.h
> +++ b/drivers/hid/hid-ids.h
> @@ -717,6 +717,21 @@
> #define USB_DEVICE_ID_LOGITECH_MOUSE_C01A 0xc01a
> #define USB_DEVICE_ID_LOGITECH_MOUSE_C05A 0xc05a
> #define USB_DEVICE_ID_LOGITECH_MOUSE_C06A 0xc06a
> +/*
> + * The following mice have different IDs over Bluetooth than Logitech Unifying
> + * protocol, hence the _BT suffix.
> + */
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT1 0xb014
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT2 0xb016
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_M720_BT 0xb015
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT1 0xb013
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT2 0xb018
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT3 0xb01f
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2S_BT 0xb01a
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT1 0xb012
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT2 0xb017
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT3 0xb01e
> +#define USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_2S_BT 0xb019
> #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD 0xc20a
> #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD 0xc211
> #define USB_DEVICE_ID_LOGITECH_EXTREME_3D 0xc215
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index 19cc980eebce..17598b87f1b7 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -64,6 +64,14 @@ MODULE_PARM_DESC(disable_tap_to_click,
> #define HIDPP_QUIRK_NO_HIDINPUT BIT(23)
> #define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS BIT(24)
> #define HIDPP_QUIRK_UNIFYING BIT(25)
> +#define HIDPP_QUIRK_HI_RES_SCROLL_1P0 BIT(26)
> +#define HIDPP_QUIRK_HI_RES_SCROLL_X2120 BIT(27)
> +#define HIDPP_QUIRK_HI_RES_SCROLL_X2121 BIT(28)
> +
> +/* Convenience constant to check for any high-res support. */
> +#define HIDPP_QUIRK_HI_RES_SCROLL (HIDPP_QUIRK_HI_RES_SCROLL_1P0 | \
> + HIDPP_QUIRK_HI_RES_SCROLL_X2120 | \
> + HIDPP_QUIRK_HI_RES_SCROLL_X2121)
>
> #define HIDPP_QUIRK_DELAYED_INIT HIDPP_QUIRK_NO_HIDINPUT
>
> @@ -149,6 +157,7 @@ struct hidpp_device {
> unsigned long capabilities;
>
> struct hidpp_battery battery;
> + struct hid_scroll_counter vertical_wheel_counter;
> };
>
> /* HID++ 1.0 error codes */
> @@ -400,32 +409,53 @@ static void hidpp_prefix_name(char **name, int name_length)
> #define HIDPP_SET_LONG_REGISTER 0x82
> #define HIDPP_GET_LONG_REGISTER 0x83
>
> -#define HIDPP_REG_GENERAL 0x00
> -
> -static int hidpp10_enable_battery_reporting(struct hidpp_device *hidpp_dev)
> +/**
> + * hidpp10_set_register_bit() - Sets a single bit in a HID++ 1.0 register.
> + * @hidpp_dev: the device to set the register on.
> + * @register_address: the address of the register to modify.
> + * @byte: the byte of the register to modify. Should be less than 3.
> + * Return: 0 if successful, otherwise a negative error code.
> + */
> +static int hidpp10_set_register_bit(struct hidpp_device *hidpp_dev,
> + u8 register_address, u8 byte, u8 bit)
> {
> struct hidpp_report response;
> int ret;
> u8 params[3] = { 0 };
>
> ret = hidpp_send_rap_command_sync(hidpp_dev,
> - REPORT_ID_HIDPP_SHORT,
> - HIDPP_GET_REGISTER,
> - HIDPP_REG_GENERAL,
> - NULL, 0, &response);
> + REPORT_ID_HIDPP_SHORT,
> + HIDPP_GET_REGISTER,
> + register_address,
> + NULL, 0, &response);
> if (ret)
> return ret;
>
> memcpy(params, response.rap.params, 3);
>
> - /* Set the battery bit */
> - params[0] |= BIT(4);
> + params[byte] |= BIT(bit);
>
> return hidpp_send_rap_command_sync(hidpp_dev,
> - REPORT_ID_HIDPP_SHORT,
> - HIDPP_SET_REGISTER,
> - HIDPP_REG_GENERAL,
> - params, 3, &response);
> + REPORT_ID_HIDPP_SHORT,
> + HIDPP_SET_REGISTER,
> + register_address,
> + params, 3, &response);
> +}
> +
> +
> +#define HIDPP_REG_GENERAL 0x00
> +
> +static int hidpp10_enable_battery_reporting(struct hidpp_device *hidpp_dev)
> +{
> + return hidpp10_set_register_bit(hidpp_dev, HIDPP_REG_GENERAL, 0, 4);
> +}

This hunk should be dealt in a separate patch (including the one function below)

> +
> +#define HIDPP_REG_FEATURES 0x01
> +
> +/* On HID++ 1.0 devices, high-res scrolling was called "fast scrolling". */
> +static int hidpp10_enable_fast_scrolling(struct hidpp_device *hidpp_dev)
> +{
> + return hidpp10_set_register_bit(hidpp_dev, HIDPP_REG_FEATURES, 0, 6);
> }
>
> #define HIDPP_REG_BATTERY_STATUS 0x07
> @@ -1136,6 +1166,101 @@ static int hidpp_battery_get_property(struct power_supply *psy,
> return ret;
> }
>
> +/* -------------------------------------------------------------------------- */
> +/* 0x2120: Hi-resolution scrolling */
> +/* -------------------------------------------------------------------------- */
> +
> +#define HIDPP_PAGE_HI_RESOLUTION_SCROLLING 0x2120
> +
> +#define CMD_HI_RESOLUTION_SCROLLING_SET_HIGHRES_SCROLLING_MODE 0x10
> +
> +static int hidpp_hrs_set_highres_scrolling_mode(struct hidpp_device *hidpp,
> + bool enabled, u8 *multiplier)
> +{
> + u8 feature_index;
> + u8 feature_type;
> + int ret;
> + u8 params[1];
> + struct hidpp_report response;
> +
> + ret = hidpp_root_get_feature(hidpp,
> + HIDPP_PAGE_HI_RESOLUTION_SCROLLING,
> + &feature_index,
> + &feature_type);
> + if (ret)
> + return ret;
> +
> + params[0] = enabled ? BIT(0) : 0;
> + ret = hidpp_send_fap_command_sync(hidpp, feature_index,
> + CMD_HI_RESOLUTION_SCROLLING_SET_HIGHRES_SCROLLING_MODE,
> + params, sizeof(params), &response);
> + if (ret)
> + return ret;
> + *multiplier = response.fap.params[1];
> + return 0;
> +}
> +
> +/* -------------------------------------------------------------------------- */
> +/* 0x2121: HiRes Wheel */
> +/* -------------------------------------------------------------------------- */
> +
> +#define HIDPP_PAGE_HIRES_WHEEL 0x2121
> +
> +#define CMD_HIRES_WHEEL_GET_WHEEL_CAPABILITY 0x00
> +#define CMD_HIRES_WHEEL_SET_WHEEL_MODE 0x20
> +
> +static int hidpp_hrw_get_wheel_capability(struct hidpp_device *hidpp,
> + u8 *multiplier)
> +{
> + u8 feature_index;
> + u8 feature_type;
> + int ret;
> + struct hidpp_report response;
> +
> + ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HIRES_WHEEL,
> + &feature_index, &feature_type);
> + if (ret)
> + goto return_default;
> +
> + ret = hidpp_send_fap_command_sync(hidpp, feature_index,
> + CMD_HIRES_WHEEL_GET_WHEEL_CAPABILITY,
> + NULL, 0, &response);
> + if (ret)
> + goto return_default;
> +
> + *multiplier = response.fap.params[0];
> + return 0;
> +return_default:
> + *multiplier = 8;
> + hid_warn(hidpp->hid_dev,
> + "Couldn't get wheel multiplier (error %d), assuming %d.\n",
> + ret, *multiplier);
> + return ret;
> +}
> +
> +static int hidpp_hrw_set_wheel_mode(struct hidpp_device *hidpp, bool invert,
> + bool high_resolution, bool use_hidpp)
> +{
> + u8 feature_index;
> + u8 feature_type;
> + int ret;
> + u8 params[1];
> + struct hidpp_report response;
> +
> + ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_HIRES_WHEEL,
> + &feature_index, &feature_type);
> + if (ret)
> + return ret;
> +
> + params[0] = (invert ? BIT(2) : 0) |
> + (high_resolution ? BIT(1) : 0) |
> + (use_hidpp ? BIT(0) : 0);
> +
> + return hidpp_send_fap_command_sync(hidpp, feature_index,
> + CMD_HIRES_WHEEL_SET_WHEEL_MODE,
> + params, sizeof(params), &response);
> +}
> +
> /* -------------------------------------------------------------------------- */
> /* 0x4301: Solar Keyboard */
> /* -------------------------------------------------------------------------- */
> @@ -2399,7 +2524,8 @@ static int m560_raw_event(struct hid_device *hdev, u8 *data, int size)
> input_report_rel(mydata->input, REL_Y, v);
>
> v = hid_snto32(data[6], 8);
> - input_report_rel(mydata->input, REL_WHEEL, v);
> + hid_scroll_counter_handle_scroll(
> + &hidpp->vertical_wheel_counter, v);

The conversion input_report_rel(... REL_WHEEL,...) to
hid_scroll_counter_handle_scroll() should be dealt in a separate
patch.

>
> input_sync(mydata->input);
> }
> @@ -2527,6 +2653,71 @@ static int g920_get_config(struct hidpp_device *hidpp)
> return 0;
> }
>
> +/* -------------------------------------------------------------------------- */
> +/* High-resolution scroll wheels */
> +/* -------------------------------------------------------------------------- */
> +
> +/**
> + * struct hi_res_scroll_info - Stores info on a device's high-res scroll wheel.
> + * @product_id: the HID product ID of the device being described.
> + * @mm256_per_hi_res_unit: the distance moved by the user's finger for each
> + * high-resolution unit reported by the device, in
> + * 256ths of a millimetre.
> + */
> +struct hi_res_scroll_info {
> + __u32 product_id;
> + int mm256_per_hi_res_unit;
> +};
> +
> +static struct hi_res_scroll_info hi_res_scroll_devices[] = {
> + { /* Anywhere MX */
> + .product_id = 0x1017, .mm256_per_hi_res_unit = 114 },
> + { /* Performance MX */
> + .product_id = 0x101a, .mm256_per_hi_res_unit = 104 },
> + { /* M560 */
> + .product_id = 0x402d, .mm256_per_hi_res_unit = 111 },
> + { /* MX Master 2S */
> + .product_id = 0x4069, .mm256_per_hi_res_unit = 104 },
> + { .product_id = USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_2S_BT,
> + .mm256_per_hi_res_unit = 104 },
> +};
> +
> +static int hi_res_scroll_look_up_mm256(__u32 product_id)
> +{
> + int i;
> + int num_devices = sizeof(hi_res_scroll_devices)
> + / sizeof(hi_res_scroll_devices[0]);
> + for (i = 0; i < num_devices; i++) {
> + if (hi_res_scroll_devices[i].product_id == product_id)
> + return hi_res_scroll_devices[i].mm256_per_hi_res_unit;
> + }
> + return 104;

104?

> +}
> +
> +static int hi_res_scroll_enable(struct hidpp_device *hidpp)
> +{
> + int ret;
> + u8 multiplier;
> +
> + if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_X2121) {
> + ret = hidpp_hrw_set_wheel_mode(hidpp, false, true, false);
> + hidpp_hrw_get_wheel_capability(hidpp, &multiplier);
> + } else if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_X2120) {
> + ret = hidpp_hrs_set_highres_scrolling_mode(hidpp, true,
> + &multiplier);
> + } else /* if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_1P0) */ {
> + ret = hidpp10_enable_fast_scrolling(hidpp);
> + multiplier = 8;
> + }
> + if (ret)
> + return ret;
> +
> + hidpp->vertical_wheel_counter.resolution_multiplier = multiplier;
> + hidpp->vertical_wheel_counter.mm256_per_hi_res_unit =
> + hi_res_scroll_look_up_mm256(hidpp->hid_dev->product);
> + return 0;
> +}
> +
> /* -------------------------------------------------------------------------- */
> /* Generic HID++ devices */
> /* -------------------------------------------------------------------------- */
> @@ -2572,6 +2763,11 @@ static void hidpp_populate_input(struct hidpp_device *hidpp,
> wtp_populate_input(hidpp, input, origin_is_hid_core);
> else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)
> m560_populate_input(hidpp, input, origin_is_hid_core);
> +
> + if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL) {
> + input_set_capability(input, EV_REL, REL_WHEEL_HI_RES);
> + hidpp->vertical_wheel_counter.dev = input;
> + }
> }
>
> static int hidpp_input_configured(struct hid_device *hdev,
> @@ -2690,6 +2886,25 @@ static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
> return 0;
> }
>
> +static int hidpp_event(struct hid_device *hdev, struct hid_field *field,
> + struct hid_usage *usage, __s32 value)
> +{
> + struct hidpp_device *hidpp = hid_get_drvdata(hdev);
> + struct hid_scroll_counter *counter = &hidpp->vertical_wheel_counter;
> +
> + /* A scroll event may occur before the multiplier has been retrieved or
> + * the input device set, or high-res scroll enabling may fail. In such
> + * cases we must return early (falling back to default behaviour) to
> + * avoid a crash in hid_scroll_counter_handle_scroll.
> + */
> + if (!(hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL) || value == 0
> + || counter->dev == NULL || counter->resolution_multiplier == 0)
> + return 0;

You are using usage_table to force the .event function to be called
only on the WHEEL events. This is correct, but I have a feeling this
will be harder to understand when we are going to extend the .event()
function for other events.
If you rather keep the cde that way, please add a comment at the
beginning of the function stating that we are only called against
WHEEL events because of usage_table.

> +
> + hid_scroll_counter_handle_scroll(counter, value);
> + return 1;
> +}
> +
> static int hidpp_initialize_battery(struct hidpp_device *hidpp)
> {
> static atomic_t battery_no = ATOMIC_INIT(0);
> @@ -2901,6 +3116,9 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
> if (hidpp->battery.ps)
> power_supply_changed(hidpp->battery.ps);
>
> + if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL)
> + hi_res_scroll_enable(hidpp);
> +
> if (!(hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) || hidpp->delayed_input)
> /* if the input nodes are already created, we can stop now */
> return;
> @@ -3086,35 +3304,97 @@ static void hidpp_remove(struct hid_device *hdev)
> mutex_destroy(&hidpp->send_mutex);
> }
>
> +#define LDJ_DEVICE(product) \
> + HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, \
> + USB_VENDOR_ID_LOGITECH, (product))
> +
> static const struct hid_device_id hidpp_devices[] = {
> { /* wireless touchpad */
> - HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, 0x4011),
> + LDJ_DEVICE(0x4011),
> .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
> HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
> { /* wireless touchpad T650 */
> - HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, 0x4101),
> + LDJ_DEVICE(0x4101),

The rewrite of the existing supported devices should be in a separate patch too.

> .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
> { /* wireless touchpad T651 */
> HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> USB_DEVICE_ID_LOGITECH_T651),
> .driver_data = HIDPP_QUIRK_CLASS_WTP },
> + { /* Mouse Logitech Anywhere MX */
> + LDJ_DEVICE(0x1017), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 },
> + { /* Mouse Logitech Cube */
> + LDJ_DEVICE(0x4010), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2120 },
> + { /* Mouse Logitech M335 */
> + LDJ_DEVICE(0x4050), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech M336, M337, and M535 */
> + HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT1),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT2),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech M515 */
> + LDJ_DEVICE(0x4007), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2120 },
> { /* Mouse logitech M560 */
> - HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, 0x402d),
> - .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
> + LDJ_DEVICE(0x402d),
> + .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560
> + | HIDPP_QUIRK_HI_RES_SCROLL_X2120 },
> + { /* Mouse Logitech M705 (firmware RQM17) */
> + LDJ_DEVICE(0x101b), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 },
> + { /* Mouse Logitech M705 (firmware RQM67) */
> + LDJ_DEVICE(0x406d), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech M720 */
> + LDJ_DEVICE(0x405e), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_M720_BT),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech MX Anywhere 2 */
> + LDJ_DEVICE(0x404a), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { LDJ_DEVICE(0xb013), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { LDJ_DEVICE(0xb018), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { LDJ_DEVICE(0xb01f), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT1),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT2),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT3),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech MX Anywhere 2S */
> + LDJ_DEVICE(0x406a), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2S_BT),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech MX Master */
> + LDJ_DEVICE(0x4041), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { LDJ_DEVICE(0x4060), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { LDJ_DEVICE(0x4071), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT1),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT2),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT3),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech MX Master 2S */
> + LDJ_DEVICE(0x4069), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
> + USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_2S_BT),
> + .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_X2121 },
> + { /* Mouse Logitech Performance MX */
> + LDJ_DEVICE(0x101a), .driver_data = HIDPP_QUIRK_HI_RES_SCROLL_1P0 },
> { /* Keyboard logitech K400 */
> - HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, 0x4024),
> + LDJ_DEVICE(0x4024),
> .driver_data = HIDPP_QUIRK_CLASS_K400 },
> { /* Solar Keyboard Logitech K750 */
> - HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, 0x4002),
> + LDJ_DEVICE(0x4002),
> .driver_data = HIDPP_QUIRK_CLASS_K750 },
>
> - { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
> - USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
> + { LDJ_DEVICE(HID_ANY_ID) },
>
> { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL),
> .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS},
> @@ -3123,12 +3403,19 @@ static const struct hid_device_id hidpp_devices[] = {
>
> MODULE_DEVICE_TABLE(hid, hidpp_devices);
>
> +static const struct hid_usage_id hidpp_usages[] = {
> + { HID_GD_WHEEL, EV_REL, REL_WHEEL },
> + { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
> +};
> +
> static struct hid_driver hidpp_driver = {
> .name = "logitech-hidpp-device",
> .id_table = hidpp_devices,
> .probe = hidpp_probe,
> .remove = hidpp_remove,
> .raw_event = hidpp_raw_event,
> + .usage_table = hidpp_usages,
> + .event = hidpp_event,
> .input_configured = hidpp_input_configured,
> .input_mapping = hidpp_input_mapping,
> .input_mapped = hidpp_input_mapped,
> diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
> index 249d49b6b16c..7926c275f258 100644
> --- a/drivers/hid/hid-quirks.c
> +++ b/drivers/hid/hid-quirks.c
> @@ -463,6 +463,17 @@ static const struct hid_device_id hid_have_special_driver[] = {
> #endif
> #if IS_ENABLED(CONFIG_HID_LOGITECH_HIDPP)
> { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT1) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_M336_337_535_BT2) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_M720_BT) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT1) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT2) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2_BT3) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_ANYWHERE_2S_BT) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT1) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT2) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_BT3) },
> + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_MX_MASTER_2S_BT) },

Since v4.16, this should not be required anymore. Please drop the hunk
if I am correct.

Cheers,
Benjamin

> { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL) },
> #endif
> #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
> --
> 2.18.0.1017.ga543ac7ca45-goog
>

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