From e90a6df80dc45ab53d2f4f4db297434e48c0208e Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 25 Feb 2013 11:31:43 +0100 Subject: HID: Extend the interface with report requests Some drivers send reports directly to underlying device, creating an unwanted dependency on the underlying transport layer. This patch adds hid_hw_request() to the interface, thereby removing usbhid from the lion share of the drivers. Signed-off-by: Henrik Rydberg Signed-off-by: Benjamin Tissoires Reviewed-by: Mika Westerberg Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-core.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/hid/usbhid') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 8e0c4bf94..366fd09 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1243,6 +1243,18 @@ static int usbhid_power(struct hid_device *hid, int lvl) return r; } +static void usbhid_request(struct hid_device *hid, struct hid_report *rep, int reqtype) +{ + switch (reqtype) { + case HID_REQ_GET_REPORT: + usbhid_submit_report(hid, rep, USB_DIR_IN); + break; + case HID_REQ_SET_REPORT: + usbhid_submit_report(hid, rep, USB_DIR_OUT); + break; + } +} + static struct hid_ll_driver usb_hid_driver = { .parse = usbhid_parse, .start = usbhid_start, @@ -1251,6 +1263,7 @@ static struct hid_ll_driver usb_hid_driver = { .close = usbhid_close, .power = usbhid_power, .hidinput_input_event = usb_hidinput_input_event, + .request = usbhid_request, }; static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) -- cgit v1.1 From 3373443befa73ee60e4275e7699b26058b01455a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 25 Feb 2013 11:31:44 +0100 Subject: HID: Extend the interface with wait io request Some drivers need to wait for an io from the underlying device, creating an unwanted dependency on the underlying transport layer. This patch adds wait() to the interface, thereby removing usbhid from the lion share of the drivers. Signed-off-by: Henrik Rydberg Signed-off-by: Benjamin Tissoires Reviewed-by: Mika Westerberg Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-core.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/hid/usbhid') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 366fd09..99d95d3 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1264,6 +1264,7 @@ static struct hid_ll_driver usb_hid_driver = { .power = usbhid_power, .hidinput_input_event = usb_hidinput_input_event, .request = usbhid_request, + .wait = usbhid_wait_io, }; static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) -- cgit v1.1 From d881427253da011495f4193663d809d0e9dfa215 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 25 Feb 2013 11:31:46 +0100 Subject: HID: use hid_hw_request() instead of direct call to usbhid This allows the hid drivers to be independent from the transport layer. The patch was constructed by replacing all occurences of usbhid_submit_report() by its hid_hw_request() counterpart. Then, drivers not requiring USB_HID anymore have their USB_HID dependency cleaned in the Kconfig file. Finally, few drivers still depends on USB_HID. Many of them are requiring the io wait callback. They are found in the next patch. Signed-off-by: Benjamin Tissoires Reviewed-by: Mika Westerberg For the sensor-hub part: Tested-by: Mika Westerberg Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-core.c | 3 +- drivers/hid/usbhid/hid-pidff.c | 64 +++++++++++++++++++++--------------------- drivers/hid/usbhid/hiddev.c | 4 +-- drivers/hid/usbhid/usbhid.h | 2 -- 4 files changed, 35 insertions(+), 38 deletions(-) (limited to 'drivers/hid/usbhid') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 99d95d3..da68687 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -639,7 +639,7 @@ static void __usbhid_submit_report(struct hid_device *hid, struct hid_report *re } } -void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) +static void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir) { struct usbhid_device *usbhid = hid->driver_data; unsigned long flags; @@ -648,7 +648,6 @@ void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, uns __usbhid_submit_report(hid, report, dir); spin_unlock_irqrestore(&usbhid->lock, flags); } -EXPORT_SYMBOL_GPL(usbhid_submit_report); /* Workqueue routine to send requests to change LEDs */ static void hid_led(struct work_struct *work) diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c index f91c136..0f1efa3 100644 --- a/drivers/hid/usbhid/hid-pidff.c +++ b/drivers/hid/usbhid/hid-pidff.c @@ -263,8 +263,8 @@ static void pidff_set_envelope_report(struct pidff_device *pidff, envelope->attack_level, pidff->set_envelope[PID_ATTACK_LEVEL].value[0]); - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_ENVELOPE], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_ENVELOPE], + HID_REQ_SET_REPORT); } /* @@ -290,8 +290,8 @@ static void pidff_set_constant_force_report(struct pidff_device *pidff, pidff_set_signed(&pidff->set_constant[PID_MAGNITUDE], effect->u.constant.level); - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_CONSTANT], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_CONSTANT], + HID_REQ_SET_REPORT); } /* @@ -325,8 +325,8 @@ static void pidff_set_effect_report(struct pidff_device *pidff, pidff->effect_direction); pidff->set_effect[PID_START_DELAY].value[0] = effect->replay.delay; - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_EFFECT], + HID_REQ_SET_REPORT); } /* @@ -357,8 +357,8 @@ static void pidff_set_periodic_report(struct pidff_device *pidff, pidff_set(&pidff->set_periodic[PID_PHASE], effect->u.periodic.phase); pidff->set_periodic[PID_PERIOD].value[0] = effect->u.periodic.period; - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_PERIODIC], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_PERIODIC], + HID_REQ_SET_REPORT); } @@ -399,8 +399,8 @@ static void pidff_set_condition_report(struct pidff_device *pidff, effect->u.condition[i].left_saturation); pidff_set(&pidff->set_condition[PID_DEAD_BAND], effect->u.condition[i].deadband); - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_CONDITION], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_CONDITION], + HID_REQ_SET_REPORT); } } @@ -440,8 +440,8 @@ static void pidff_set_ramp_force_report(struct pidff_device *pidff, effect->u.ramp.start_level); pidff_set_signed(&pidff->set_ramp[PID_RAMP_END], effect->u.ramp.end_level); - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_RAMP], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_RAMP], + HID_REQ_SET_REPORT); } /* @@ -465,8 +465,8 @@ static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum) int j; pidff->create_new_effect_type->value[0] = efnum; - usbhid_submit_report(pidff->hid, pidff->reports[PID_CREATE_NEW_EFFECT], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_CREATE_NEW_EFFECT], + HID_REQ_SET_REPORT); hid_dbg(pidff->hid, "create_new_effect sent, type: %d\n", efnum); pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] = 0; @@ -475,8 +475,8 @@ static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum) for (j = 0; j < 60; j++) { hid_dbg(pidff->hid, "pid_block_load requested\n"); - usbhid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_LOAD], - USB_DIR_IN); + hid_hw_request(pidff->hid, pidff->reports[PID_BLOCK_LOAD], + HID_REQ_GET_REPORT); usbhid_wait_io(pidff->hid); if (pidff->block_load_status->value[0] == pidff->status_id[PID_BLOCK_LOAD_SUCCESS]) { @@ -513,8 +513,8 @@ static void pidff_playback_pid(struct pidff_device *pidff, int pid_id, int n) pidff->effect_operation[PID_LOOP_COUNT].value[0] = n; } - usbhid_submit_report(pidff->hid, pidff->reports[PID_EFFECT_OPERATION], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_EFFECT_OPERATION], + HID_REQ_SET_REPORT); } /** @@ -535,8 +535,8 @@ static int pidff_playback(struct input_dev *dev, int effect_id, int value) static void pidff_erase_pid(struct pidff_device *pidff, int pid_id) { pidff->block_free[PID_EFFECT_BLOCK_INDEX].value[0] = pid_id; - usbhid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_FREE], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_BLOCK_FREE], + HID_REQ_SET_REPORT); } /* @@ -718,8 +718,8 @@ static void pidff_set_gain(struct input_dev *dev, u16 gain) struct pidff_device *pidff = dev->ff->private; pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], gain); - usbhid_submit_report(pidff->hid, pidff->reports[PID_DEVICE_GAIN], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_DEVICE_GAIN], + HID_REQ_SET_REPORT); } static void pidff_autocenter(struct pidff_device *pidff, u16 magnitude) @@ -744,8 +744,8 @@ static void pidff_autocenter(struct pidff_device *pidff, u16 magnitude) pidff->set_effect[PID_DIRECTION_ENABLE].value[0] = 1; pidff->set_effect[PID_START_DELAY].value[0] = 0; - usbhid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT], - USB_DIR_OUT); + hid_hw_request(pidff->hid, pidff->reports[PID_SET_EFFECT], + HID_REQ_SET_REPORT); } /* @@ -1158,18 +1158,18 @@ static void pidff_reset(struct pidff_device *pidff) pidff->device_control->value[0] = pidff->control_id[PID_RESET]; /* We reset twice as sometimes hid_wait_io isn't waiting long enough */ - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); + hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); usbhid_wait_io(hid); - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); + hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); usbhid_wait_io(hid); pidff->device_control->value[0] = pidff->control_id[PID_ENABLE_ACTUATORS]; - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); + hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); usbhid_wait_io(hid); /* pool report is sometimes messed up, refetch it */ - usbhid_submit_report(hid, pidff->reports[PID_POOL], USB_DIR_IN); + hid_hw_request(hid, pidff->reports[PID_POOL], HID_REQ_GET_REPORT); usbhid_wait_io(hid); if (pidff->pool[PID_SIMULTANEOUS_MAX].value) { @@ -1181,8 +1181,8 @@ static void pidff_reset(struct pidff_device *pidff) break; } hid_dbg(pidff->hid, "pid_pool requested again\n"); - usbhid_submit_report(hid, pidff->reports[PID_POOL], - USB_DIR_IN); + hid_hw_request(hid, pidff->reports[PID_POOL], + HID_REQ_GET_REPORT); usbhid_wait_io(hid); } } @@ -1269,8 +1269,8 @@ int hid_pidff_init(struct hid_device *hid) if (test_bit(FF_GAIN, dev->ffbit)) { pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], 0xffff); - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_GAIN], - USB_DIR_OUT); + hid_hw_request(hid, pidff->reports[PID_DEVICE_GAIN], + HID_REQ_SET_REPORT); } error = pidff_check_autocenter(pidff, dev); diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 87bd649..430d2a9 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -705,7 +705,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (report == NULL) break; - usbhid_submit_report(hid, report, USB_DIR_IN); + hid_hw_request(hid, report, HID_REQ_GET_REPORT); usbhid_wait_io(hid); r = 0; @@ -724,7 +724,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (report == NULL) break; - usbhid_submit_report(hid, report, USB_DIR_OUT); + hid_hw_request(hid, report, HID_REQ_SET_REPORT); usbhid_wait_io(hid); r = 0; diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index bd87a61..aa1d5ff 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -38,8 +38,6 @@ int usbhid_wait_io(struct hid_device* hid); void usbhid_close(struct hid_device *hid); int usbhid_open(struct hid_device *hid); void usbhid_init_reports(struct hid_device *hid); -void usbhid_submit_report -(struct hid_device *hid, struct hid_report *report, unsigned char dir); int usbhid_get_power(struct hid_device *hid); void usbhid_put_power(struct hid_device *hid); struct usb_interface *usbhid_find_interface(int minor); -- cgit v1.1 From b7966a4d7be0a10329f03330390f4bdaf453d74a Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 25 Feb 2013 11:31:47 +0100 Subject: HID: use hid_hw_wait() instead of direct call to usbhid This removes most of the dependencies between hid drivers and usbhid. The patch was constructed by replacing all occurences of usbhid_wait_io() by its hid_hw_wait() counterpart. Then, drivers not requiring USB_HID anymore have their USB_HID dependency cleaned in the Kconfig file. As of today, few drivers are still requiring an explicit USB layer dependency: * ntrig (a patch is on its way) * multitouch (one patch following and another on its way) * lenovo tpkbd * roccat * sony The last three are two deeply using direct calls to the usb subsystem to be able to be cleaned right now. Signed-off-by: Benjamin Tissoires Reviewed-by: Mika Westerberg Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-core.c | 3 +-- drivers/hid/usbhid/hid-pidff.c | 16 ++++++++-------- drivers/hid/usbhid/hiddev.c | 4 ++-- drivers/hid/usbhid/usbhid.h | 1 - 4 files changed, 11 insertions(+), 13 deletions(-) (limited to 'drivers/hid/usbhid') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index da68687..420466b 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -705,7 +705,7 @@ static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, un return 0; } -int usbhid_wait_io(struct hid_device *hid) +static int usbhid_wait_io(struct hid_device *hid) { struct usbhid_device *usbhid = hid->driver_data; @@ -719,7 +719,6 @@ int usbhid_wait_io(struct hid_device *hid) return 0; } -EXPORT_SYMBOL_GPL(usbhid_wait_io); static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) { diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c index 0f1efa3..10b6167 100644 --- a/drivers/hid/usbhid/hid-pidff.c +++ b/drivers/hid/usbhid/hid-pidff.c @@ -471,13 +471,13 @@ static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum) pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] = 0; pidff->block_load_status->value[0] = 0; - usbhid_wait_io(pidff->hid); + hid_hw_wait(pidff->hid); for (j = 0; j < 60; j++) { hid_dbg(pidff->hid, "pid_block_load requested\n"); hid_hw_request(pidff->hid, pidff->reports[PID_BLOCK_LOAD], HID_REQ_GET_REPORT); - usbhid_wait_io(pidff->hid); + hid_hw_wait(pidff->hid); if (pidff->block_load_status->value[0] == pidff->status_id[PID_BLOCK_LOAD_SUCCESS]) { hid_dbg(pidff->hid, "device reported free memory: %d bytes\n", @@ -551,7 +551,7 @@ static int pidff_erase_effect(struct input_dev *dev, int effect_id) effect_id, pidff->pid_id[effect_id]); /* Wait for the queue to clear. We do not want a full fifo to prevent the effect removal. */ - usbhid_wait_io(pidff->hid); + hid_hw_wait(pidff->hid); pidff_playback_pid(pidff, pid_id, 0); pidff_erase_pid(pidff, pid_id); @@ -1159,18 +1159,18 @@ static void pidff_reset(struct pidff_device *pidff) pidff->device_control->value[0] = pidff->control_id[PID_RESET]; /* We reset twice as sometimes hid_wait_io isn't waiting long enough */ hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); pidff->device_control->value[0] = pidff->control_id[PID_ENABLE_ACTUATORS]; hid_hw_request(hid, pidff->reports[PID_DEVICE_CONTROL], HID_REQ_SET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); /* pool report is sometimes messed up, refetch it */ hid_hw_request(hid, pidff->reports[PID_POOL], HID_REQ_GET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); if (pidff->pool[PID_SIMULTANEOUS_MAX].value) { while (pidff->pool[PID_SIMULTANEOUS_MAX].value[0] < 2) { @@ -1183,7 +1183,7 @@ static void pidff_reset(struct pidff_device *pidff) hid_dbg(pidff->hid, "pid_pool requested again\n"); hid_hw_request(hid, pidff->reports[PID_POOL], HID_REQ_GET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); } } } diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 430d2a9..2f1ddca 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -706,7 +706,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; hid_hw_request(hid, report, HID_REQ_GET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); r = 0; break; @@ -725,7 +725,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; hid_hw_request(hid, report, HID_REQ_SET_REPORT); - usbhid_wait_io(hid); + hid_hw_wait(hid); r = 0; break; diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index aa1d5ff..dbb6af6 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -34,7 +34,6 @@ #include /* API provided by hid-core.c for USB HID drivers */ -int usbhid_wait_io(struct hid_device* hid); void usbhid_close(struct hid_device *hid); int usbhid_open(struct hid_device *hid); void usbhid_init_reports(struct hid_device *hid); -- cgit v1.1 From 9684819b5a29e62acd8265a92d8f3454de9bb71e Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 27 Feb 2013 16:38:17 +0100 Subject: HID: ll_driver: Extend the interface with idle requests Some drivers send the idle command directly to underlying device, creating an unwanted dependency on the underlying transport layer. This patch adds hid_hw_idle() to the interface, thereby removing usbhid from the lion share of the drivers. Signed-off-by: Benjamin Tissoires Reviewed-by: David Herrmann Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/hid/usbhid') diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 420466b..effcd3d 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1253,6 +1253,20 @@ static void usbhid_request(struct hid_device *hid, struct hid_report *rep, int r } } +static int usbhid_idle(struct hid_device *hid, int report, int idle, + int reqtype) +{ + struct usb_device *dev = hid_to_usb_dev(hid); + struct usb_interface *intf = to_usb_interface(hid->dev.parent); + struct usb_host_interface *interface = intf->cur_altsetting; + int ifnum = interface->desc.bInterfaceNumber; + + if (reqtype != HID_REQ_SET_IDLE) + return -EINVAL; + + return hid_set_idle(dev, ifnum, report, idle); +} + static struct hid_ll_driver usb_hid_driver = { .parse = usbhid_parse, .start = usbhid_start, @@ -1263,6 +1277,7 @@ static struct hid_ll_driver usb_hid_driver = { .hidinput_input_event = usb_hidinput_input_event, .request = usbhid_request, .wait = usbhid_wait_io, + .idle = usbhid_idle, }; static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id) -- cgit v1.1