X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fhid%2Fhid-logitech-hidpp.c;h=5fd97860aec4d8ec1e92b02031e715e8644367e8;hb=727cde6c3af38ebb2dbc40e0b32499a55051851d;hp=484196459305577c19433fe4fe35b21c2ac39905;hpb=8d58b66ed2b000f27658c88a4ed70e8042e86a58;p=firefly-linux-kernel-4.4.55.git diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 484196459305..5fd97860aec4 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -33,6 +33,11 @@ module_param(disable_raw_mode, bool, 0644); MODULE_PARM_DESC(disable_raw_mode, "Disable Raw mode reporting for touchpads and keep firmware gestures."); +static bool disable_tap_to_click; +module_param(disable_tap_to_click, bool, 0644); +MODULE_PARM_DESC(disable_tap_to_click, + "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently)."); + #define REPORT_ID_HIDPP_SHORT 0x10 #define REPORT_ID_HIDPP_LONG 0x11 @@ -41,10 +46,15 @@ MODULE_PARM_DESC(disable_raw_mode, #define HIDPP_QUIRK_CLASS_WTP BIT(0) #define HIDPP_QUIRK_CLASS_M560 BIT(1) +#define HIDPP_QUIRK_CLASS_K400 BIT(2) /* bits 2..20 are reserved for classes */ -#define HIDPP_QUIRK_DELAYED_INIT BIT(21) +#define HIDPP_QUIRK_CONNECT_EVENTS BIT(21) #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22) +#define HIDPP_QUIRK_NO_HIDINPUT BIT(23) + +#define HIDPP_QUIRK_DELAYED_INIT (HIDPP_QUIRK_NO_HIDINPUT | \ + HIDPP_QUIRK_CONNECT_EVENTS) /* * There are two hidpp protocols in use, the first version hidpp10 is known @@ -552,6 +562,52 @@ static char *hidpp_get_device_name(struct hidpp_device *hidpp) return name; } +/* -------------------------------------------------------------------------- */ +/* 0x6010: Touchpad FW items */ +/* -------------------------------------------------------------------------- */ + +#define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010 + +#define CMD_TOUCHPAD_FW_ITEMS_SET 0x10 + +struct hidpp_touchpad_fw_items { + uint8_t presence; + uint8_t desired_state; + uint8_t state; + uint8_t persistent; +}; + +/** + * send a set state command to the device by reading the current items->state + * field. items is then filled with the current state. + */ +static int hidpp_touchpad_fw_items_set(struct hidpp_device *hidpp, + u8 feature_index, + struct hidpp_touchpad_fw_items *items) +{ + struct hidpp_report response; + int ret; + u8 *params = (u8 *)response.fap.params; + + ret = hidpp_send_fap_command_sync(hidpp, feature_index, + CMD_TOUCHPAD_FW_ITEMS_SET, &items->state, 1, &response); + + if (ret > 0) { + hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", + __func__, ret); + return -EPROTO; + } + if (ret) + return ret; + + items->presence = params[0]; + items->desired_state = params[1]; + items->state = params[2]; + items->persistent = params[3]; + + return 0; +} + /* -------------------------------------------------------------------------- */ /* 0x6100: TouchPadRawXY */ /* -------------------------------------------------------------------------- */ @@ -1132,6 +1188,75 @@ static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi, return -1; } +/* ------------------------------------------------------------------------- */ +/* Logitech K400 devices */ +/* ------------------------------------------------------------------------- */ + +/* + * The Logitech K400 keyboard has an embedded touchpad which is seen + * as a mouse from the OS point of view. There is a hardware shortcut to disable + * tap-to-click but the setting is not remembered accross reset, annoying some + * users. + * + * We can toggle this feature from the host by using the feature 0x6010: + * Touchpad FW items + */ + +struct k400_private_data { + u8 feature_index; +}; + +static int k400_disable_tap_to_click(struct hidpp_device *hidpp) +{ + struct k400_private_data *k400 = hidpp->private_data; + struct hidpp_touchpad_fw_items items = {}; + int ret; + u8 feature_type; + + if (!k400->feature_index) { + ret = hidpp_root_get_feature(hidpp, + HIDPP_PAGE_TOUCHPAD_FW_ITEMS, + &k400->feature_index, &feature_type); + if (ret) + /* means that the device is not powered up */ + return ret; + } + + ret = hidpp_touchpad_fw_items_set(hidpp, k400->feature_index, &items); + if (ret) + return ret; + + return 0; +} + +static int k400_allocate(struct hid_device *hdev) +{ + struct hidpp_device *hidpp = hid_get_drvdata(hdev); + struct k400_private_data *k400; + + k400 = devm_kzalloc(&hdev->dev, sizeof(struct k400_private_data), + GFP_KERNEL); + if (!k400) + return -ENOMEM; + + hidpp->private_data = k400; + + return 0; +}; + +static int k400_connect(struct hid_device *hdev, bool connected) +{ + struct hidpp_device *hidpp = hid_get_drvdata(hdev); + + if (!connected) + return 0; + + if (!disable_tap_to_click) + return 0; + + return k400_disable_tap_to_click(hidpp); +} + /* -------------------------------------------------------------------------- */ /* Generic HID++ devices */ /* -------------------------------------------------------------------------- */ @@ -1160,13 +1285,15 @@ static void hidpp_populate_input(struct hidpp_device *hidpp, m560_populate_input(hidpp, input, origin_is_hid_core); } -static void hidpp_input_configured(struct hid_device *hdev, +static int hidpp_input_configured(struct hid_device *hdev, struct hid_input *hidinput) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct input_dev *input = hidinput->input; hidpp_populate_input(hidpp, input, true); + + return 0; } static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, @@ -1203,7 +1330,7 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, if (unlikely(hidpp_report_is_connect_event(report))) { atomic_set(&hidpp->connected, !(report->rap.params[0] & (1 << 6))); - if ((hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) && + if ((hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) && (schedule_work(&hidpp->work) == 0)) dbg_hid("%s: connect event already queued\n", __func__); return 1; @@ -1328,23 +1455,30 @@ static void hidpp_connect_event(struct hidpp_device *hidpp) ret = m560_send_config_command(hdev, connected); if (ret) return; + } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { + ret = k400_connect(hdev, connected); + if (ret) + return; } if (!connected || hidpp->delayed_input) return; + /* the device is already connected, we can ask for its name and + * protocol */ if (!hidpp->protocol_major) { ret = !hidpp_is_connected(hidpp); if (ret) { hid_err(hdev, "Can not get the protocol version.\n"); return; } + hid_info(hdev, "HID++ %u.%u device connected.\n", + hidpp->protocol_major, hidpp->protocol_minor); } - /* the device is already connected, we can ask for its name and - * protocol */ - hid_info(hdev, "HID++ %u.%u device connected.\n", - hidpp->protocol_major, hidpp->protocol_minor); + if (!(hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT)) + /* if HID created the input nodes for us, we can stop now */ + return; if (!hidpp->name || hidpp->name == hdev->name) { name = hidpp_get_device_name(hidpp); @@ -1397,7 +1531,8 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) if (disable_raw_mode) { hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP; - hidpp->quirks &= ~HIDPP_QUIRK_DELAYED_INIT; + hidpp->quirks &= ~HIDPP_QUIRK_CONNECT_EVENTS; + hidpp->quirks &= ~HIDPP_QUIRK_NO_HIDINPUT; } if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { @@ -1408,6 +1543,10 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) ret = m560_allocate(hdev); if (ret) goto allocate_fail; + } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { + ret = k400_allocate(hdev); + if (ret) + goto allocate_fail; } INIT_WORK(&hidpp->work, delayed_work_cb); @@ -1448,7 +1587,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) /* Block incoming packets */ hid_device_io_stop(hdev); - if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) + if (hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) connect_mask &= ~HID_CONNECT_HIDINPUT; ret = hid_hw_start(hdev, connect_mask); @@ -1457,7 +1596,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) goto hid_hw_start_fail; } - if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) { + if (hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) { /* Allow incoming packets */ hid_device_io_start(hdev); @@ -1502,6 +1641,10 @@ static const struct hid_device_id hidpp_devices[] = { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, USB_VENDOR_ID_LOGITECH, 0x402d), .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 }, + { /* Keyboard logitech K400 */ + HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, + USB_VENDOR_ID_LOGITECH, 0x4024), + .driver_data = HIDPP_QUIRK_CONNECT_EVENTS | HIDPP_QUIRK_CLASS_K400 }, { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},