From b69d6536794c93dda362ab79c9f559382e3465be Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 5 Feb 2014 16:33:16 -0500 Subject: HID: add inliners for ll_driver transport-layer callbacks Those callbacks are not mandatory, so it's better to add inliners to use them safely. Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- include/linux/hid.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 003cc8e89831..dddcad07c2d9 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -680,6 +680,8 @@ struct hid_driver { * shouldn't allocate anything to not leak memory * @request: send report request to device (e.g. feature report) * @wait: wait for buffered io to complete (send/recv reports) + * @raw_request: send raw report request to device (e.g. feature report) + * @output_report: send output report to device * @idle: send idle request to device */ struct hid_ll_driver { @@ -973,6 +975,49 @@ static inline void hid_hw_request(struct hid_device *hdev, hdev->ll_driver->request(hdev, report, reqtype); } +/** + * hid_hw_raw_request - send report request to device + * + * @hdev: hid device + * @reportnum: report ID + * @buf: in/out data to transfer + * @len: length of buf + * @rtype: HID report type + * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT + * + * @return: count of data transfered, negative if error + * + * Same behavior as hid_hw_request, but with raw buffers instead. + */ +static inline int hid_hw_raw_request(struct hid_device *hdev, + unsigned char reportnum, __u8 *buf, + size_t len, unsigned char rtype, int reqtype) +{ + if (hdev->ll_driver->raw_request) + return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, + rtype, reqtype); + + return -ENOSYS; +} + +/** + * hid_hw_output_report - send output report to device + * + * @hdev: hid device + * @buf: raw data to transfer + * @len: length of buf + * + * @return: count of data transfered, negative if error + */ +static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, + size_t len) +{ + if (hdev->ll_driver->output_report) + return hdev->ll_driver->output_report(hdev, buf, len); + + return -ENOSYS; +} + /** * hid_hw_idle - send idle request to device * -- cgit v1.2.3 From b40272e4d0e6d07a0bf9409e5f95d622422cd73d Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 5 Feb 2014 16:33:19 -0500 Subject: HID: remove hidinput_input_event handler All the different transport drivers use now the generic event handling in hid-input. We can remove the handler definitively now. Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-input.c | 4 +--- include/linux/hid.h | 4 ---- 2 files changed, 1 insertion(+), 7 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index d50e7313b171..e5bb3c378292 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1263,9 +1263,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) } input_set_drvdata(input_dev, hid); - if (hid->ll_driver->hidinput_input_event) - input_dev->event = hid->ll_driver->hidinput_input_event; - else if (hid->ll_driver->request || hid->hid_output_raw_report) + if (hid->ll_driver->request || hid->hid_output_raw_report) input_dev->event = hidinput_input_event; input_dev->open = hidinput_open; input_dev->close = hidinput_close; diff --git a/include/linux/hid.h b/include/linux/hid.h index dddcad07c2d9..38c307b8138a 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -675,7 +675,6 @@ struct hid_driver { * @stop: called on remove * @open: called by input layer on open * @close: called by input layer on close - * @hidinput_input_event: event input event (e.g. ff or leds) * @parse: this method is called only once to parse the device data, * shouldn't allocate anything to not leak memory * @request: send report request to device (e.g. feature report) @@ -693,9 +692,6 @@ struct hid_ll_driver { int (*power)(struct hid_device *hdev, int level); - int (*hidinput_input_event) (struct input_dev *idev, unsigned int type, - unsigned int code, int value); - int (*parse)(struct hid_device *hdev); void (*request)(struct hid_device *hdev, -- cgit v1.2.3 From cafebc058bf86e63fff5354864781d3de11e41d3 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 5 Feb 2014 16:33:22 -0500 Subject: HID: remove hid_get_raw_report in struct hid_device dev->hid_get_raw_report(X) and hid_hw_raw_request(X, HID_REQ_GET_REPORT) are strictly equivalent. Switch the hid subsystem to the hid_hw notation and remove the field .hid_get_raw_report in struct hid_device. Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-input.c | 6 +++--- drivers/hid/hid-sony.c | 3 ++- drivers/hid/hidraw.c | 7 ++++--- drivers/hid/i2c-hid/i2c-hid.c | 1 - drivers/hid/uhid.c | 1 - drivers/hid/usbhid/hid-core.c | 1 - include/linux/hid.h | 3 --- net/bluetooth/hidp/core.c | 1 - 8 files changed, 9 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index e5bb3c378292..5bd17b256856 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -350,9 +350,9 @@ static int hidinput_get_battery_property(struct power_supply *psy, ret = -ENOMEM; break; } - ret = dev->hid_get_raw_report(dev, dev->battery_report_id, - buf, 2, - dev->battery_report_type); + ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, + dev->battery_report_type, + HID_REQ_GET_REPORT); if (ret != 2) { ret = -ENODATA; diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 12354055d474..3930acbdee98 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -706,7 +706,8 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev) if (!buf) return -ENOMEM; - ret = hdev->hid_get_raw_report(hdev, 0xf2, buf, 17, HID_FEATURE_REPORT); + ret = hid_hw_raw_request(hdev, 0xf2, buf, 17, HID_FEATURE_REPORT, + HID_REQ_GET_REPORT); if (ret < 0) hid_err(hdev, "can't set operational mode\n"); diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index cb0137b3718d..4b2dc956c702 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -189,7 +189,7 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t dev = hidraw_table[minor]->hid; - if (!dev->hid_get_raw_report) { + if (!dev->ll_driver->raw_request) { ret = -ENODEV; goto out; } @@ -216,14 +216,15 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t /* * Read the first byte from the user. This is the report number, - * which is passed to dev->hid_get_raw_report(). + * which is passed to hid_hw_raw_request(). */ if (copy_from_user(&report_number, buffer, 1)) { ret = -EFAULT; goto out_free; } - ret = dev->hid_get_raw_report(dev, report_number, buf, count, report_type); + ret = hid_hw_raw_request(dev, report_number, buf, count, report_type, + HID_REQ_GET_REPORT); if (ret < 0) goto out_free; diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index e914f2755491..f4ea7343e823 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -1005,7 +1005,6 @@ static int i2c_hid_probe(struct i2c_client *client, hid->driver_data = client; hid->ll_driver = &i2c_hid_ll_driver; - hid->hid_get_raw_report = i2c_hid_get_raw_report; hid->hid_output_raw_report = i2c_hid_output_raw_report; hid->dev.parent = &client->dev; ACPI_COMPANION_SET(&hid->dev, ACPI_COMPANION(&client->dev)); diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index f5a2b1931143..12439e1eeae2 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -404,7 +404,6 @@ static int uhid_dev_create(struct uhid_device *uhid, hid->uniq[63] = 0; hid->ll_driver = &uhid_hid_driver; - hid->hid_get_raw_report = uhid_hid_get_raw; hid->hid_output_raw_report = uhid_hid_output_raw; hid->bus = ev->u.create.bus; hid->vendor = ev->u.create.vendor; diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 406497b120ea..b9a770f4d7ae 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1289,7 +1289,6 @@ static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id * usb_set_intfdata(intf, hid); hid->ll_driver = &usb_hid_driver; - hid->hid_get_raw_report = usbhid_get_raw_report; hid->hid_output_raw_report = usbhid_output_raw_report; hid->ff_init = hid_pidff_init; #ifdef CONFIG_USB_HIDDEV diff --git a/include/linux/hid.h b/include/linux/hid.h index 38c307b8138a..c56681a66b0b 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -508,9 +508,6 @@ struct hid_device { /* device report descriptor */ struct hid_usage *, __s32); void (*hiddev_report_event) (struct hid_device *, struct hid_report *); - /* handler for raw input (Get_Report) data, used by hidraw */ - int (*hid_get_raw_report) (struct hid_device *, unsigned char, __u8 *, size_t, unsigned char); - /* handler for raw output data, used by hidraw */ int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t, unsigned char); diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 02670b30895a..77c4badb3e9d 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -773,7 +773,6 @@ static int hidp_setup_hid(struct hidp_session *session, hid->dev.parent = &session->conn->hcon->dev; hid->ll_driver = &hidp_hid_driver; - hid->hid_get_raw_report = hidp_get_raw_report; hid->hid_output_raw_report = hidp_output_raw_report; /* True if device is blacklisted in drivers/hid/hid-core.c */ -- cgit v1.2.3 From 7e845d46b13e7730a3720e978c28117ce422edf9 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 5 Feb 2014 16:33:23 -0500 Subject: HID: introduce helper to access hid_output_raw_report() Add a helper to access hdev->hid_output_raw_report(). To convert the drivers, use the following snippets: for i in drivers/hid/*.c do sed -i.bak "s/[^ \t]*->hid_output_raw_report(/hid_output_raw_report(/g" $i done Then manually fix for checkpatch.pl Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-input.c | 2 +- drivers/hid/hid-lg.c | 6 ++++-- drivers/hid/hid-magicmouse.c | 2 +- drivers/hid/hid-sony.c | 6 +++--- drivers/hid/hid-thingm.c | 4 ++-- drivers/hid/hid-wacom.c | 16 +++++++--------- drivers/hid/hid-wiimote-core.c | 2 +- drivers/hid/hidraw.c | 2 +- include/linux/hid.h | 16 ++++++++++++++++ 9 files changed, 36 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 5bd17b256856..15959fbae268 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1184,7 +1184,7 @@ static void hidinput_led_worker(struct work_struct *work) hid_output_report(report, buf); /* synchronous output report */ - hid->hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT); + hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT); kfree(buf); } diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c index 9fe9d4ac3114..76ed7e512dcf 100644 --- a/drivers/hid/hid-lg.c +++ b/drivers/hid/hid-lg.c @@ -692,7 +692,8 @@ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id) if (hdev->product == USB_DEVICE_ID_LOGITECH_WII_WHEEL) { unsigned char buf[] = { 0x00, 0xAF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - ret = hdev->hid_output_raw_report(hdev, buf, sizeof(buf), HID_FEATURE_REPORT); + ret = hid_output_raw_report(hdev, buf, sizeof(buf), + HID_FEATURE_REPORT); if (ret >= 0) { /* insert a little delay of 10 jiffies ~ 40ms */ @@ -704,7 +705,8 @@ static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id) buf[1] = 0xB2; get_random_bytes(&buf[2], 2); - ret = hdev->hid_output_raw_report(hdev, buf, sizeof(buf), HID_FEATURE_REPORT); + ret = hid_output_raw_report(hdev, buf, sizeof(buf), + HID_FEATURE_REPORT); } } diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 3b43d1cfa936..cb5db3afc690 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -538,7 +538,7 @@ static int magicmouse_probe(struct hid_device *hdev, * but there seems to be no other way of switching the mode. * Thus the super-ugly hacky success check below. */ - ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature), + ret = hid_output_raw_report(hdev, feature, sizeof(feature), HID_FEATURE_REPORT); if (ret != -EIO && ret != sizeof(feature)) { hid_err(hdev, "unable to request touch data (%d)\n", ret); diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 3930acbdee98..075089b37236 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -720,7 +720,8 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev) static int sixaxis_set_operational_bt(struct hid_device *hdev) { unsigned char buf[] = { 0xf4, 0x42, 0x03, 0x00, 0x00 }; - return hdev->hid_output_raw_report(hdev, buf, sizeof(buf), HID_FEATURE_REPORT); + return hid_output_raw_report(hdev, buf, sizeof(buf), + HID_FEATURE_REPORT); } static void buzz_set_leds(struct hid_device *hdev, const __u8 *leds) @@ -942,8 +943,7 @@ static void sixaxis_state_worker(struct work_struct *work) buf[10] |= sc->led_state[2] << 3; buf[10] |= sc->led_state[3] << 4; - sc->hdev->hid_output_raw_report(sc->hdev, buf, sizeof(buf), - HID_OUTPUT_REPORT); + hid_output_raw_report(sc->hdev, buf, sizeof(buf), HID_OUTPUT_REPORT); } static void dualshock4_state_worker(struct work_struct *work) diff --git a/drivers/hid/hid-thingm.c b/drivers/hid/hid-thingm.c index 99342cfa0ea2..7dd3197f3b3e 100644 --- a/drivers/hid/hid-thingm.c +++ b/drivers/hid/hid-thingm.c @@ -48,8 +48,8 @@ static int blink1_send_command(struct blink1_data *data, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7], buf[8]); - ret = data->hdev->hid_output_raw_report(data->hdev, buf, - BLINK1_CMD_SIZE, HID_FEATURE_REPORT); + ret = hid_output_raw_report(data->hdev, buf, BLINK1_CMD_SIZE, + HID_FEATURE_REPORT); return ret < 0 ? ret : 0; } diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c index 60c75dcbbdb8..c720db912edb 100644 --- a/drivers/hid/hid-wacom.c +++ b/drivers/hid/hid-wacom.c @@ -128,8 +128,7 @@ static void wacom_set_image(struct hid_device *hdev, const char *image, rep_data[0] = WAC_CMD_ICON_START_STOP; rep_data[1] = 0; - ret = hdev->hid_output_raw_report(hdev, rep_data, 2, - HID_FEATURE_REPORT); + ret = hid_output_raw_report(hdev, rep_data, 2, HID_FEATURE_REPORT); if (ret < 0) goto err; @@ -143,15 +142,14 @@ static void wacom_set_image(struct hid_device *hdev, const char *image, rep_data[j + 3] = p[(i << 6) + j]; rep_data[2] = i; - ret = hdev->hid_output_raw_report(hdev, rep_data, 67, + ret = hid_output_raw_report(hdev, rep_data, 67, HID_FEATURE_REPORT); } rep_data[0] = WAC_CMD_ICON_START_STOP; rep_data[1] = 0; - ret = hdev->hid_output_raw_report(hdev, rep_data, 2, - HID_FEATURE_REPORT); + ret = hid_output_raw_report(hdev, rep_data, 2, HID_FEATURE_REPORT); err: return; @@ -183,7 +181,7 @@ static void wacom_leds_set_brightness(struct led_classdev *led_dev, buf[3] = value; /* use fixed brightness for OLEDs */ buf[4] = 0x08; - hdev->hid_output_raw_report(hdev, buf, 9, HID_FEATURE_REPORT); + hid_output_raw_report(hdev, buf, 9, HID_FEATURE_REPORT); kfree(buf); } @@ -339,7 +337,7 @@ static void wacom_set_features(struct hid_device *hdev, u8 speed) rep_data[0] = 0x03 ; rep_data[1] = 0x00; limit = 3; do { - ret = hdev->hid_output_raw_report(hdev, rep_data, 2, + ret = hid_output_raw_report(hdev, rep_data, 2, HID_FEATURE_REPORT); } while (ret < 0 && limit-- > 0); @@ -352,7 +350,7 @@ static void wacom_set_features(struct hid_device *hdev, u8 speed) rep_data[1] = 0x00; limit = 3; do { - ret = hdev->hid_output_raw_report(hdev, + ret = hid_output_raw_report(hdev, rep_data, 2, HID_FEATURE_REPORT); } while (ret < 0 && limit-- > 0); @@ -378,7 +376,7 @@ static void wacom_set_features(struct hid_device *hdev, u8 speed) rep_data[0] = 0x03; rep_data[1] = wdata->features; - ret = hdev->hid_output_raw_report(hdev, rep_data, 2, + ret = hid_output_raw_report(hdev, rep_data, 2, HID_FEATURE_REPORT); if (ret >= 0) wdata->high_speed = speed; diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index abb20db2b443..d7dc6c5bc244 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -35,7 +35,7 @@ static int wiimote_hid_send(struct hid_device *hdev, __u8 *buffer, if (!buf) return -ENOMEM; - ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT); + ret = hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT); kfree(buf); return ret; diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 4b2dc956c702..f8708c93f85c 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -153,7 +153,7 @@ static ssize_t hidraw_send_report(struct file *file, const char __user *buffer, goto out_free; } - ret = dev->hid_output_raw_report(dev, buf, count, report_type); + ret = hid_output_raw_report(dev, buf, count, report_type); out_free: kfree(buf); out: diff --git a/include/linux/hid.h b/include/linux/hid.h index c56681a66b0b..a837ede65ec6 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -1011,6 +1011,22 @@ static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, return -ENOSYS; } +/** + * hid_output_raw_report - send an output or a feature report to the device + * + * @hdev: hid device + * @buf: raw data to transfer + * @len: length of buf + * @report_type: HID_FEATURE_REPORT or HID_OUTPUT_REPORT + * + * @return: count of data transfered, negative if error + */ +static inline int hid_output_raw_report(struct hid_device *hdev, __u8 *buf, + size_t len, unsigned char report_type) +{ + return hdev->hid_output_raw_report(hdev, buf, len, report_type); +} + /** * hid_hw_idle - send idle request to device * -- cgit v1.2.3 From 4fa5a7f76cc7b6ac87f57741edd2b124851d119f Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 10 Feb 2014 12:58:48 -0500 Subject: HID: core: implement generic .request() .request() can be emulated through .raw_request() we can implement this emulation in hid-core, and make .request not mandatory for transport layer drivers. Signed-off-by: Benjamin Tissoires Reviewed-by: David Herrmann Signed-off-by: Jiri Kosina --- drivers/hid/hid-core.c | 45 ++++++++++++++++++++++++++++++++++++++++++++- include/linux/hid.h | 5 ++++- 2 files changed, 48 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 026ab0fc06f7..b6ae69711d2a 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1248,6 +1248,11 @@ void hid_output_report(struct hid_report *report, __u8 *data) } EXPORT_SYMBOL_GPL(hid_output_report); +static int hid_report_len(struct hid_report *report) +{ + return ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7; +} + /* * Allocator for buffer that is going to be passed to hid_output_report() */ @@ -1258,7 +1263,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags) * of implement() working on 8 byte chunks */ - int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7; + int len = hid_report_len(report); return kmalloc(len, flags); } @@ -1314,6 +1319,44 @@ static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, return report; } +/* + * Implement a generic .request() callback, using .raw_request() + * DO NOT USE in hid drivers directly, but through hid_hw_request instead. + */ +void __hid_request(struct hid_device *hid, struct hid_report *report, + int reqtype) +{ + char *buf; + int ret; + int len; + + if (!hid->ll_driver->raw_request) + return; + + buf = hid_alloc_report_buf(report, GFP_KERNEL); + if (!buf) + return; + + len = hid_report_len(report); + + if (reqtype == HID_REQ_SET_REPORT) + hid_output_report(report, buf); + + ret = hid->ll_driver->raw_request(hid, report->id, buf, len, + report->type, reqtype); + if (ret < 0) { + dbg_hid("unable to complete request: %d\n", ret); + goto out; + } + + if (reqtype == HID_REQ_GET_REPORT) + hid_input_report(hid, report->type, buf, ret, 0); + +out: + kfree(buf); +} +EXPORT_SYMBOL_GPL(__hid_request); + int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt) { diff --git a/include/linux/hid.h b/include/linux/hid.h index a837ede65ec6..09fbbd7fb784 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -753,6 +753,7 @@ struct hid_field *hidinput_get_led_field(struct hid_device *hid); unsigned int hidinput_count_leds(struct hid_device *hid); __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); void hid_output_report(struct hid_report *report, __u8 *data); +void __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype); u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); struct hid_device *hid_allocate_device(void); struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id); @@ -965,7 +966,9 @@ static inline void hid_hw_request(struct hid_device *hdev, struct hid_report *report, int reqtype) { if (hdev->ll_driver->request) - hdev->ll_driver->request(hdev, report, reqtype); + return hdev->ll_driver->request(hdev, report, reqtype); + + __hid_request(hdev, report, reqtype); } /** -- cgit v1.2.3 From 5318251744b2c8a288f91f4e53ed69f2a01d6412 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 10 Feb 2014 12:58:59 -0500 Subject: HID: core: check parameters when sending/receiving data from the device It is better to check them soon enough before triggering any kernel panic. Signed-off-by: Benjamin Tissoires Reviewed-by: David Herrmann Signed-off-by: Jiri Kosina --- drivers/hid/i2c-hid/i2c-hid.c | 2 +- include/linux/hid.h | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index 5308656eec2e..1a955317d05f 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -276,7 +276,7 @@ static int i2c_hid_set_or_send_report(struct i2c_client *client, u8 reportType, u16 outputRegister = le16_to_cpu(ihid->hdesc.wOutputRegister); u16 maxOutputLength = le16_to_cpu(ihid->hdesc.wMaxOutputLength); - /* hidraw already checked that data_len < HID_MAX_BUFFER_SIZE */ + /* hid_hw_* already checked that data_len < HID_MAX_BUFFER_SIZE */ u16 size = 2 /* size */ + (reportID ? 1 : 0) /* reportID */ + data_len /* buf */; diff --git a/include/linux/hid.h b/include/linux/hid.h index 09fbbd7fb784..60f3ff762376 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -989,6 +989,9 @@ static inline int hid_hw_raw_request(struct hid_device *hdev, unsigned char reportnum, __u8 *buf, size_t len, unsigned char rtype, int reqtype) { + if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) + return -EINVAL; + if (hdev->ll_driver->raw_request) return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, rtype, reqtype); @@ -1008,6 +1011,9 @@ static inline int hid_hw_raw_request(struct hid_device *hdev, static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len) { + if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) + return -EINVAL; + if (hdev->ll_driver->output_report) return hdev->ll_driver->output_report(hdev, buf, len); -- cgit v1.2.3 From 3c86726cfe38952f0366f86acfbbb025813ec1c2 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Thu, 20 Feb 2014 15:24:49 -0500 Subject: HID: make .raw_request mandatory SET_REPORT and GET_REPORT are mandatory in the HID specification. Make the corresponding API in hid-core mandatory too, which removes the need to test against it in some various places. Signed-off-by: Benjamin Tissoires Reviewed-by: David Herrmann Signed-off-by: Jiri Kosina --- Documentation/hid/hid-transport.txt | 3 ++- drivers/hid/hid-core.c | 11 ++++++++--- drivers/hid/hid-input.c | 4 +--- include/linux/hid.h | 5 +---- 4 files changed, 12 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/Documentation/hid/hid-transport.txt b/Documentation/hid/hid-transport.txt index 9dbbceaef4f3..3dcba9fd4a3a 100644 --- a/Documentation/hid/hid-transport.txt +++ b/Documentation/hid/hid-transport.txt @@ -283,7 +283,8 @@ The available HID callbacks are: int reqtype) Same as ->request() but provides the report as raw buffer. This request shall be synchronous. A transport driver must not use ->wait() to complete such - requests. + requests. This request is mandatory and hid core will reject the device if + it is missing. - int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len) Send raw output report via intr channel. Used by some HID device drivers diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index b6ae69711d2a..0b57babe3f9f 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1330,9 +1330,6 @@ void __hid_request(struct hid_device *hid, struct hid_report *report, int ret; int len; - if (!hid->ll_driver->raw_request) - return; - buf = hid_alloc_report_buf(report, GFP_KERNEL); if (!buf) return; @@ -2471,6 +2468,14 @@ int hid_add_device(struct hid_device *hdev) if (hid_ignore(hdev)) return -ENODEV; + /* + * Check for the mandatory transport channel. + */ + if (!hdev->ll_driver->raw_request) { + hid_err(hdev, "transport driver missing .raw_request()\n"); + return -EINVAL; + } + /* * Read the device report descriptor once and use as template * for the driver-specific modifications. diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 310b96779e8e..f5aef792f13b 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1266,9 +1266,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) } input_set_drvdata(input_dev, hid); - if (hid->ll_driver->request || hid->ll_driver->output_report || - hid->ll_driver->raw_request) - input_dev->event = hidinput_input_event; + input_dev->event = hidinput_input_event; input_dev->open = hidinput_open; input_dev->close = hidinput_close; input_dev->setkeycode = hidinput_setkeycode; diff --git a/include/linux/hid.h b/include/linux/hid.h index 60f3ff762376..5eb282e0dff7 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -992,11 +992,8 @@ static inline int hid_hw_raw_request(struct hid_device *hdev, if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) return -EINVAL; - if (hdev->ll_driver->raw_request) - return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, + return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, rtype, reqtype); - - return -ENOSYS; } /** -- cgit v1.2.3 From e534a9352237e84263cecedff283387b144b3ed8 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Sat, 8 Mar 2014 22:52:42 -0500 Subject: HID: sony: do not rely on hid_output_raw_report hid_out_raw_report is going to be obsoleted as it is not part of the unified HID low level transport documentation (Documentation/hid/hid-transport.txt) To do so, we need to introduce two new quirks: * HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP: this quirks prevents the transport driver to use the interrupt channel to send output report (and thus force to use HID_REQ_SET_REPORT command) * HID_QUIRK_SKIP_OUTPUT_REPORT_ID: this one forces usbhid to not include the report ID in the buffer it sends to the device through HID_REQ_SET_REPORT in case of an output report This also fixes a regression introduced in commit 3a75b24949a8 (HID: hidraw: replace hid_output_raw_report() calls by appropriates ones). The hidraw API was not able to communicate with the PS3 SixAxis controllers in USB mode. Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Tested-by: Antonio Ospite Signed-off-by: Jiri Kosina --- drivers/hid/hid-sony.c | 60 ++++++++++--------------------------------- drivers/hid/hidraw.c | 3 ++- drivers/hid/usbhid/hid-core.c | 7 ++++- include/linux/hid.h | 2 ++ 4 files changed, 24 insertions(+), 48 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index b5fe65e70dc4..4884bb567bf8 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #include #include @@ -1006,45 +1005,6 @@ static int sony_mapping(struct hid_device *hdev, struct hid_input *hi, return 0; } -/* - * The Sony Sixaxis does not handle HID Output Reports on the Interrupt EP - * like it should according to usbhid/hid-core.c::usbhid_output_raw_report() - * so we need to override that forcing HID Output Reports on the Control EP. - * - * There is also another issue about HID Output Reports via USB, the Sixaxis - * does not want the report_id as part of the data packet, so we have to - * discard buf[0] when sending the actual control message, even for numbered - * reports, humpf! - */ -static int sixaxis_usb_output_raw_report(struct hid_device *hid, __u8 *buf, - size_t count, unsigned char report_type) -{ - struct usb_interface *intf = to_usb_interface(hid->dev.parent); - struct usb_device *dev = interface_to_usbdev(intf); - struct usb_host_interface *interface = intf->cur_altsetting; - int report_id = buf[0]; - int ret; - - if (report_type == HID_OUTPUT_REPORT) { - /* Don't send the Report ID */ - buf++; - count--; - } - - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - HID_REQ_SET_REPORT, - USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, - ((report_type + 1) << 8) | report_id, - interface->desc.bInterfaceNumber, buf, count, - USB_CTRL_SET_TIMEOUT); - - /* Count also the Report ID, in case of an Output report. */ - if (ret > 0 && report_type == HID_OUTPUT_REPORT) - ret++; - - return ret; -} - /* * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller * to "operational". Without this, the ps3 controller will not report any @@ -1305,11 +1265,8 @@ static void sixaxis_state_worker(struct work_struct *work) buf[10] |= sc->led_state[2] << 3; buf[10] |= sc->led_state[3] << 4; - if (sc->quirks & SIXAXIS_CONTROLLER_USB) - hid_output_raw_report(sc->hdev, buf, sizeof(buf), HID_OUTPUT_REPORT); - else - hid_hw_raw_request(sc->hdev, 0x01, buf, sizeof(buf), - HID_OUTPUT_REPORT, HID_REQ_SET_REPORT); + hid_hw_raw_request(sc->hdev, 0x01, buf, sizeof(buf), HID_OUTPUT_REPORT, + HID_REQ_SET_REPORT); } static void dualshock4_state_worker(struct work_struct *work) @@ -1659,7 +1616,18 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) } if (sc->quirks & SIXAXIS_CONTROLLER_USB) { - hdev->hid_output_raw_report = sixaxis_usb_output_raw_report; + /* + * The Sony Sixaxis does not handle HID Output Reports on the + * Interrupt EP like it could, so we need to force HID Output + * Reports to use HID_REQ_SET_REPORT on the Control EP. + * + * There is also another issue about HID Output Reports via USB, + * the Sixaxis does not want the report_id as part of the data + * packet, so we have to discard buf[0] when sending the actual + * control message, even for numbered reports, humpf! + */ + hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP; + hdev->quirks |= HID_QUIRK_SKIP_OUTPUT_REPORT_ID; ret = sixaxis_set_operational_usb(hdev); sc->worker_initialized = 1; INIT_WORK(&sc->state_worker, sixaxis_state_worker); diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 2cc484c0017b..ffa648ce002e 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -149,7 +149,8 @@ static ssize_t hidraw_send_report(struct file *file, const char __user *buffer, goto out_free; } - if (report_type == HID_OUTPUT_REPORT) { + if ((report_type == HID_OUTPUT_REPORT) && + !(dev->quirks & HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP)) { ret = hid_hw_output_report(dev, buf, count); /* * compatibility with old implementation of USB-HID and I2C-HID: diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 0d1d87533f48..3bc7cad48fe0 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -894,7 +894,12 @@ static int usbhid_set_raw_report(struct hid_device *hid, unsigned int reportnum, int ret, skipped_report_id = 0; /* Byte 0 is the report number. Report data starts at byte 1.*/ - buf[0] = reportnum; + if ((rtype == HID_OUTPUT_REPORT) && + (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORT_ID)) + buf[0] = 0; + else + buf[0] = reportnum; + if (buf[0] == 0x0) { /* Don't send the Report ID */ buf++; diff --git a/include/linux/hid.h b/include/linux/hid.h index 5eb282e0dff7..3fe444f4a36f 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -287,6 +287,8 @@ struct hid_item { #define HID_QUIRK_NO_EMPTY_INPUT 0x00000100 #define HID_QUIRK_NO_INIT_INPUT_REPORTS 0x00000200 #define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000 +#define HID_QUIRK_SKIP_OUTPUT_REPORT_ID 0x00020000 +#define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP 0x00040000 #define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000 #define HID_QUIRK_NO_INIT_REPORTS 0x20000000 #define HID_QUIRK_NO_IGNORE 0x40000000 -- cgit v1.2.3 From 6fd182028c43baf1c7d017d52b0134ecadbdc447 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Sat, 8 Mar 2014 22:52:43 -0500 Subject: HID: remove hid_output_raw_report transport implementations Nobody calls hid_output_raw_report anymore, and nobody should. We can now remove the various implementation in the different transport drivers and the declarations. Reviewed-by: David Herrmann Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/i2c-hid/i2c-hid.c | 14 -------------- drivers/hid/uhid.c | 1 - drivers/hid/usbhid/hid-core.c | 12 ------------ include/linux/hid.h | 19 ------------------- net/bluetooth/hidp/core.c | 14 -------------- 5 files changed, 60 deletions(-) (limited to 'include/linux') diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index 1a955317d05f..2de2b8e22462 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -587,19 +587,6 @@ static int i2c_hid_output_raw_report(struct hid_device *hid, __u8 *buf, return ret; } -static int __i2c_hid_output_raw_report(struct hid_device *hid, __u8 *buf, - size_t count, unsigned char report_type) -{ - struct i2c_client *client = hid->driver_data; - struct i2c_hid *ihid = i2c_get_clientdata(client); - bool data = true; /* SET_REPORT */ - - if (report_type == HID_OUTPUT_REPORT) - data = le16_to_cpu(ihid->hdesc.wMaxOutputLength) == 0; - - return i2c_hid_output_raw_report(hid, buf, count, report_type, data); -} - static int i2c_hid_output_report(struct hid_device *hid, __u8 *buf, size_t count) { @@ -1025,7 +1012,6 @@ static int i2c_hid_probe(struct i2c_client *client, hid->driver_data = client; hid->ll_driver = &i2c_hid_ll_driver; - hid->hid_output_raw_report = __i2c_hid_output_raw_report; hid->dev.parent = &client->dev; ACPI_COMPANION_SET(&hid->dev, ACPI_COMPANION(&client->dev)); hid->bus = BUS_I2C; diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index 60acee422fdc..7ed79be2686a 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -400,7 +400,6 @@ static int uhid_dev_create(struct uhid_device *uhid, hid->uniq[63] = 0; hid->ll_driver = &uhid_hid_driver; - hid->hid_output_raw_report = uhid_hid_output_raw; hid->bus = ev->u.create.bus; hid->vendor = ev->u.create.vendor; hid->product = ev->u.create.product; diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 3bc7cad48fe0..7b88f4cb9902 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -950,17 +950,6 @@ static int usbhid_output_report(struct hid_device *hid, __u8 *buf, size_t count) return ret; } -static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, - size_t count, unsigned char report_type) -{ - struct usbhid_device *usbhid = hid->driver_data; - - if (usbhid->urbout && report_type != HID_FEATURE_REPORT) - return usbhid_output_report(hid, buf, count); - - return usbhid_set_raw_report(hid, buf[0], buf, count, report_type); -} - static void usbhid_restart_queues(struct usbhid_device *usbhid) { if (usbhid->urbout && !test_bit(HID_OUT_RUNNING, &usbhid->iofl)) @@ -1294,7 +1283,6 @@ static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id * usb_set_intfdata(intf, hid); hid->ll_driver = &usb_hid_driver; - hid->hid_output_raw_report = usbhid_output_raw_report; hid->ff_init = hid_pidff_init; #ifdef CONFIG_USB_HIDDEV hid->hiddev_connect = hiddev_connect; diff --git a/include/linux/hid.h b/include/linux/hid.h index 3fe444f4a36f..01a90b8d53bb 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -510,9 +510,6 @@ struct hid_device { /* device report descriptor */ struct hid_usage *, __s32); void (*hiddev_report_event) (struct hid_device *, struct hid_report *); - /* handler for raw output data, used by hidraw */ - int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t, unsigned char); - /* debugging support via debugfs */ unsigned short debug; struct dentry *debug_dir; @@ -1019,22 +1016,6 @@ static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, return -ENOSYS; } -/** - * hid_output_raw_report - send an output or a feature report to the device - * - * @hdev: hid device - * @buf: raw data to transfer - * @len: length of buf - * @report_type: HID_FEATURE_REPORT or HID_OUTPUT_REPORT - * - * @return: count of data transfered, negative if error - */ -static inline int hid_output_raw_report(struct hid_device *hdev, __u8 *buf, - size_t len, unsigned char report_type) -{ - return hdev->hid_output_raw_report(hdev, buf, len, report_type); -} - /** * hid_hw_idle - send idle request to device * diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 98e4840935e2..514ddb5aef96 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -382,18 +382,6 @@ static int hidp_output_report(struct hid_device *hid, __u8 *data, size_t count) data, count); } -static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, - size_t count, unsigned char report_type) -{ - if (report_type == HID_OUTPUT_REPORT) { - return hidp_output_report(hid, data, count); - } else if (report_type != HID_FEATURE_REPORT) { - return -EINVAL; - } - - return hidp_set_raw_report(hid, data[0], data, count, report_type); -} - static int hidp_raw_request(struct hid_device *hid, unsigned char reportnum, __u8 *buf, size_t len, unsigned char rtype, int reqtype) @@ -776,8 +764,6 @@ static int hidp_setup_hid(struct hidp_session *session, hid->dev.parent = &session->conn->hcon->dev; hid->ll_driver = &hidp_hid_driver; - hid->hid_output_raw_report = hidp_output_raw_report; - /* True if device is blacklisted in drivers/hid/hid-core.c */ if (hid_ignore(hid)) { hid_destroy_device(session->hid); -- cgit v1.2.3