Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755474AbaBEVeB (ORCPT ); Wed, 5 Feb 2014 16:34:01 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33422 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754537AbaBEVdi (ORCPT ); Wed, 5 Feb 2014 16:33:38 -0500 From: Benjamin Tissoires To: Benjamin Tissoires , David Herrmann , Jiri Kosina , Frank Praznik , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/9] HID: logitech-dj: remove hidinput_input_event Date: Wed, 5 Feb 2014 16:33:17 -0500 Message-Id: <1391636004-29354-3-git-send-email-benjamin.tissoires@redhat.com> In-Reply-To: <1391636004-29354-1-git-send-email-benjamin.tissoires@redhat.com> References: <1391636004-29354-1-git-send-email-benjamin.tissoires@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hid-logitech-dj uses its own ->hidinput_input_event() instead of the generic binding in hid-input. Moving the handling of LEDs towards logi_dj_output_hidraw_report() allows two things: - remove hidinput_input_event in struct hid_device - hidraw user space programs can also set the LEDs Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-logitech-dj.c | 106 +++++++++++++++++------------------------- 1 file changed, 42 insertions(+), 64 deletions(-) diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c index f45279c..980ede5 100644 --- a/drivers/hid/hid-logitech-dj.c +++ b/drivers/hid/hid-logitech-dj.c @@ -44,14 +44,6 @@ static const char kbd_descriptor[] = { 0x19, 0xE0, /* USAGE_MINIMUM (Left Control) */ 0x29, 0xE7, /* USAGE_MAXIMUM (Right GUI) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ - 0x95, 0x05, /* REPORT COUNT (5) */ - 0x05, 0x08, /* USAGE PAGE (LED page) */ - 0x19, 0x01, /* USAGE MINIMUM (1) */ - 0x29, 0x05, /* USAGE MAXIMUM (5) */ - 0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */ - 0x95, 0x01, /* REPORT COUNT (1) */ - 0x75, 0x03, /* REPORT SIZE (3) */ - 0x91, 0x01, /* OUTPUT (Constant) */ 0x95, 0x06, /* REPORT_COUNT (6) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ @@ -60,6 +52,18 @@ static const char kbd_descriptor[] = { 0x19, 0x00, /* USAGE_MINIMUM (no event) */ 0x2A, 0xFF, 0x00, /* USAGE_MAXIMUM (reserved) */ 0x81, 0x00, /* INPUT (Data,Ary,Abs) */ + 0x85, 0x0e, /* REPORT_ID (14) */ + 0x05, 0x08, /* USAGE PAGE (LED page) */ + 0x95, 0x05, /* REPORT COUNT (5) */ + 0x75, 0x01, /* REPORT SIZE (1) */ + 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ + 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ + 0x19, 0x01, /* USAGE MINIMUM (1) */ + 0x29, 0x05, /* USAGE MAXIMUM (5) */ + 0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */ + 0x95, 0x01, /* REPORT COUNT (1) */ + 0x75, 0x03, /* REPORT SIZE (3) */ + 0x91, 0x01, /* OUTPUT (Constant) */ 0xC0 }; @@ -544,10 +548,37 @@ static int logi_dj_output_hidraw_report(struct hid_device *hid, u8 * buf, size_t count, unsigned char report_type) { - /* Called by hid raw to send data */ - dbg_hid("%s\n", __func__); + struct dj_device *djdev = hid->driver_data; + struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev; + u8 *out_buf; + int ret; - return 0; + if (buf[0] != REPORT_TYPE_LEDS) + return -EINVAL; + + out_buf = kzalloc(DJREPORT_SHORT_LENGTH, GFP_ATOMIC); + if (!out_buf) + return -ENOMEM; + + if (count < DJREPORT_SHORT_LENGTH - 2) + count = DJREPORT_SHORT_LENGTH - 2; + + out_buf[0] = REPORT_ID_DJ_SHORT; + out_buf[1] = djdev->device_index; + memcpy(out_buf + 2, buf, count); + + /* + * hid-generic calls us with hid_output_raw_report(), but the LEDs + * are set through a SET_REPORT command. It works for USB-HID devices + * because usbhid either calls a SET_REPORT or directly send the output + * report depending if the device presents an urbout. + * Let be simple, send a SET_REPORT request. + */ + ret = hid_hw_raw_request(djrcv_dev->hdev, out_buf[0], out_buf, + DJREPORT_SHORT_LENGTH, report_type, HID_REQ_SET_REPORT); + + kfree(out_buf); + return ret; } static void rdcat(char *rdesc, unsigned int *rsize, const char *data, unsigned int size) @@ -613,58 +644,6 @@ static int logi_dj_ll_parse(struct hid_device *hid) return retval; } -static int logi_dj_ll_input_event(struct input_dev *dev, unsigned int type, - unsigned int code, int value) -{ - /* Sent by the input layer to handle leds and Force Feedback */ - struct hid_device *dj_hiddev = input_get_drvdata(dev); - struct dj_device *dj_dev = dj_hiddev->driver_data; - - struct dj_receiver_dev *djrcv_dev = - dev_get_drvdata(dj_hiddev->dev.parent); - struct hid_device *dj_rcv_hiddev = djrcv_dev->hdev; - struct hid_report_enum *output_report_enum; - - struct hid_field *field; - struct hid_report *report; - unsigned char *data; - int offset; - - dbg_hid("%s: %s, type:%d | code:%d | value:%d\n", - __func__, dev->phys, type, code, value); - - if (type != EV_LED) - return -1; - - offset = hidinput_find_field(dj_hiddev, type, code, &field); - - if (offset == -1) { - dev_warn(&dev->dev, "event field not found\n"); - return -1; - } - hid_set_field(field, offset, value); - - data = hid_alloc_report_buf(field->report, GFP_ATOMIC); - if (!data) { - dev_warn(&dev->dev, "failed to allocate report buf memory\n"); - return -1; - } - - hid_output_report(field->report, &data[0]); - - output_report_enum = &dj_rcv_hiddev->report_enum[HID_OUTPUT_REPORT]; - report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT]; - hid_set_field(report->field[0], 0, dj_dev->device_index); - hid_set_field(report->field[0], 1, REPORT_TYPE_LEDS); - hid_set_field(report->field[0], 2, data[1]); - - hid_hw_request(dj_rcv_hiddev, report, HID_REQ_SET_REPORT); - - kfree(data); - - return 0; -} - static int logi_dj_ll_start(struct hid_device *hid) { dbg_hid("%s\n", __func__); @@ -683,7 +662,6 @@ static struct hid_ll_driver logi_dj_ll_driver = { .stop = logi_dj_ll_stop, .open = logi_dj_ll_open, .close = logi_dj_ll_close, - .hidinput_input_event = logi_dj_ll_input_event, }; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/