Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 568 insertions, 0 deletions

diff --git a/drivers/hid/hid-haptic.c b/drivers/hid/hid-haptic.c
new file mode 100644
index 000000000..8760eeb08
--- /dev/null
+++ b/drivers/hid/hid-haptic.c
@@ -0,0 +1,568 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  HID Haptic support for Linux
+ *
+ *  Copyright (c) 2021 Angela Czubak <acz@semihalf.com>
+ */
+
+#include <linux/input/mt.h>
+#include <linux/module.h>
+
+#include "hid-haptic.h"
+
+void hid_haptic_feature_mapping(struct hid_device *hdev,
+				struct hid_haptic_device *haptic,
+				struct hid_field *field, struct hid_usage *usage)
+{
+	u16 usage_hid;
+
+	if (usage->hid == HID_HP_AUTOTRIGGER) {
+		if (usage->usage_index >= field->report_count) {
+			dev_err(&hdev->dev,
+				"HID_HP_AUTOTRIGGER out of range\n");
+			return;
+		}
+
+		hid_device_io_start(hdev);
+		hid_hw_request(hdev, field->report, HID_REQ_GET_REPORT);
+		hid_hw_wait(hdev);
+		hid_device_io_stop(hdev);
+		haptic->default_auto_trigger =
+			field->value[usage->usage_index];
+		haptic->auto_trigger_report = field->report;
+	} else if ((usage->hid & HID_USAGE_PAGE) == HID_UP_ORDINAL) {
+		usage_hid = usage->hid & HID_USAGE;
+		switch (field->logical) {
+		case HID_HP_WAVEFORMLIST:
+			if (usage_hid > haptic->max_waveform_id)
+				haptic->max_waveform_id = usage_hid;
+			break;
+		case HID_HP_DURATIONLIST:
+			if (usage_hid > haptic->max_duration_id)
+				haptic->max_duration_id = usage_hid;
+			break;
+		default:
+			break;
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(hid_haptic_feature_mapping);
+
+bool hid_haptic_check_pressure_unit(struct hid_haptic_device *haptic,
+				    struct hid_input *hi, struct hid_field *field)
+{
+	if (field->unit == HID_UNIT_GRAM || field->unit == HID_UNIT_NEWTON) {
+		haptic->force_logical_minimum = field->logical_minimum;
+		haptic->force_physical_minimum = field->physical_minimum;
+		haptic->force_resolution = input_abs_get_res(hi->input,
+							     ABS_MT_PRESSURE);
+		return true;
+	}
+	return false;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_check_pressure_unit);
+
+int hid_haptic_input_mapping(struct hid_device *hdev,
+			     struct hid_haptic_device *haptic,
+			     struct hid_input *hi,
+			     struct hid_field *field, struct hid_usage *usage,
+			     unsigned long **bit, int *max)
+{
+	if (usage->hid == HID_HP_MANUALTRIGGER) {
+		haptic->manual_trigger_report = field->report;
+		/* we don't really want to map these fields */
+		return -1;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_input_mapping);
+
+int hid_haptic_input_configured(struct hid_device *hdev,
+				struct hid_haptic_device *haptic,
+				struct hid_input *hi)
+{
+	int error;
+
+	if (hi->application != HID_DG_TOUCHPAD)
+		return -1;
+
+	if (!haptic->auto_trigger_report || !haptic->manual_trigger_report)
+		return 0;
+
+	__set_bit(INPUT_PROP_PRESSUREPAD, hi->input->propbit);
+
+	error = hid_haptic_init(hdev, haptic, hi->input);
+	if (error) {
+		dev_warn(&hdev->dev, "Cannot allocate haptic for %s\n",
+			 hdev->name);
+		return 0;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_input_configured);
+
+static void parse_auto_trigger_field(struct hid_haptic_device *haptic,
+				     struct hid_field *field)
+{
+	int count = field->report_count;
+	int n;
+	u16 usage_hid;
+
+	for (n = 0; n < count; n++) {
+		switch (field->usage[n].hid & HID_USAGE_PAGE) {
+		case HID_UP_ORDINAL:
+			usage_hid = field->usage[n].hid & HID_USAGE;
+			switch (field->logical) {
+			case HID_HP_WAVEFORMLIST:
+				haptic->hid_usage_map[usage_hid] = field->value[n];
+				if (field->value[n] ==
+				    (HID_HP_WAVEFORMPRESS & HID_USAGE)) {
+					haptic->press_ordinal = usage_hid;
+				} else if (field->value[n] ==
+					   (HID_HP_WAVEFORMRELEASE & HID_USAGE)) {
+					haptic->release_ordinal = usage_hid;
+				}
+				break;
+			case HID_HP_DURATIONLIST:
+				haptic->duration_map[usage_hid] =
+					field->value[n];
+				break;
+			default:
+				break;
+			}
+			break;
+		case HID_UP_HAPTIC:
+			switch (field->usage[n].hid) {
+			case HID_HP_WAVEFORMVENDORID:
+				haptic->vendor_id = field->value[n];
+				break;
+			case HID_HP_WAVEFORMVENDORPAGE:
+				haptic->vendor_page = field->value[n];
+				break;
+			default:
+				break;
+			}
+			break;
+		default:
+			/* Should not really happen */
+			break;
+		}
+	}
+}
+
+static void fill_effect_buf(struct hid_haptic_device *haptic,
+			    struct ff_haptic_effect *effect,
+			    struct hid_haptic_effect *haptic_effect,
+			    int waveform_ordinal)
+{
+	struct hid_report *rep = haptic->manual_trigger_report;
+	struct hid_usage *usage;
+	struct hid_field *field;
+	s32 value;
+	int i, j;
+	u8 *buf = haptic_effect->report_buf;
+
+	mutex_lock(&haptic->manual_trigger_mutex);
+	for (i = 0; i < rep->maxfield; i++) {
+		field = rep->field[i];
+		/* Ignore if report count is out of bounds. */
+		if (field->report_count < 1)
+			continue;
+
+		for (j = 0; j < field->maxusage; j++) {
+			usage = &field->usage[j];
+
+			switch (usage->hid) {
+			case HID_HP_INTENSITY:
+				if (effect->intensity > 100) {
+					value = field->logical_maximum;
+				} else {
+					value = field->logical_minimum +
+						effect->intensity *
+						(field->logical_maximum -
+						 field->logical_minimum) / 100;
+				}
+				break;
+			case HID_HP_REPEATCOUNT:
+				value = effect->repeat_count;
+				break;
+			case HID_HP_RETRIGGERPERIOD:
+				value = effect->retrigger_period;
+				break;
+			case HID_HP_MANUALTRIGGER:
+				value = waveform_ordinal;
+				break;
+			default:
+				continue;
+			}
+
+			field->value[j] = value;
+		}
+	}
+
+	hid_output_report(rep, buf);
+	mutex_unlock(&haptic->manual_trigger_mutex);
+}
+
+static void switch_mode(struct hid_device *hdev, struct hid_haptic_device *haptic,
+			int mode)
+{
+	struct hid_report *rep = haptic->auto_trigger_report;
+	struct hid_field *field;
+	s32 value;
+	int i, j;
+
+	if (mode == HID_HAPTIC_MODE_HOST)
+		value = HID_HAPTIC_ORDINAL_WAVEFORMSTOP;
+	else
+		value = haptic->default_auto_trigger;
+
+	mutex_lock(&haptic->auto_trigger_mutex);
+	for (i = 0; i < rep->maxfield; i++) {
+		field = rep->field[i];
+		/* Ignore if report count is out of bounds. */
+		if (field->report_count < 1)
+			continue;
+
+		for (j = 0; j < field->maxusage; j++) {
+			if (field->usage[j].hid == HID_HP_AUTOTRIGGER)
+				field->value[j] = value;
+		}
+	}
+
+	/* send the report */
+	hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
+	mutex_unlock(&haptic->auto_trigger_mutex);
+	haptic->mode = mode;
+}
+
+static int hid_haptic_upload_effect(struct input_dev *dev, struct ff_effect *effect,
+				    struct ff_effect *old)
+{
+	struct hid_device *hdev = input_get_drvdata(dev);
+	struct ff_device *ff = dev->ff;
+	struct hid_haptic_device *haptic = ff->private;
+	int i, ordinal = 0;
+	bool switch_modes = false;
+
+	/* If vendor range, check vendor id and page */
+	if (effect->u.haptic.hid_usage >= (HID_HP_VENDORWAVEFORMMIN & HID_USAGE) &&
+	    effect->u.haptic.hid_usage <= (HID_HP_VENDORWAVEFORMMAX & HID_USAGE) &&
+	    (effect->u.haptic.vendor_id != haptic->vendor_id ||
+	     effect->u.haptic.vendor_waveform_page != haptic->vendor_page))
+		return -EINVAL;
+
+	/* Check hid_usage */
+	for (i = 1; i <= haptic->max_waveform_id; i++) {
+		if (haptic->hid_usage_map[i] == effect->u.haptic.hid_usage) {
+			ordinal = i;
+			break;
+		}
+	}
+	if (ordinal < 1)
+		return -EINVAL;
+
+	/* Fill the buffer for the effect id */
+	fill_effect_buf(haptic, &effect->u.haptic, &haptic->effect[effect->id],
+			ordinal);
+
+	if (effect->u.haptic.hid_usage == (HID_HP_WAVEFORMPRESS & HID_USAGE) ||
+			effect->u.haptic.hid_usage == (HID_HP_WAVEFORMRELEASE & HID_USAGE))
+		switch_modes = true;
+
+	/* If device is in autonomous mode, and the uploaded effect signals userspace
+	 * wants control of the device, change modes
+	 */
+	if (switch_modes && haptic->mode == HID_HAPTIC_MODE_DEVICE)
+		switch_mode(hdev, haptic, HID_HAPTIC_MODE_HOST);
+
+	return 0;
+}
+
+static int play_effect(struct hid_device *hdev, struct hid_haptic_device *haptic,
+		       struct hid_haptic_effect *effect)
+{
+	int ret;
+
+	ret = hid_hw_output_report(hdev, effect->report_buf,
+				   haptic->manual_trigger_report_len);
+	if (ret < 0) {
+		ret = hid_hw_raw_request(hdev,
+					 haptic->manual_trigger_report->id,
+					 effect->report_buf,
+					 haptic->manual_trigger_report_len,
+					 HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
+	}
+
+	return ret;
+}
+
+static void haptic_work_handler(struct work_struct *work)
+{
+
+	struct hid_haptic_effect *effect = container_of(work,
+							struct hid_haptic_effect,
+							work);
+	struct input_dev *dev = effect->input_dev;
+	struct hid_device *hdev = input_get_drvdata(dev);
+	struct hid_haptic_device *haptic = dev->ff->private;
+
+	mutex_lock(&haptic->manual_trigger_mutex);
+	if (effect != &haptic->stop_effect)
+		play_effect(hdev, haptic, &haptic->stop_effect);
+
+	play_effect(hdev, haptic, effect);
+	mutex_unlock(&haptic->manual_trigger_mutex);
+
+}
+
+static int hid_haptic_playback(struct input_dev *dev, int effect_id, int value)
+{
+	struct hid_haptic_device *haptic = dev->ff->private;
+
+	if (value)
+		queue_work(haptic->wq, &haptic->effect[effect_id].work);
+	else
+		queue_work(haptic->wq, &haptic->stop_effect.work);
+
+	return 0;
+}
+
+static void effect_set_default(struct ff_effect *effect)
+{
+	effect->type = FF_HAPTIC;
+	effect->id = -1;
+	effect->u.haptic.hid_usage = HID_HP_WAVEFORMNONE & HID_USAGE;
+	effect->u.haptic.intensity = 100;
+	effect->u.haptic.retrigger_period = 0;
+	effect->u.haptic.repeat_count = 0;
+}
+
+static int hid_haptic_erase(struct input_dev *dev, int effect_id)
+{
+	struct hid_haptic_device *haptic = dev->ff->private;
+	struct hid_device *hdev = input_get_drvdata(dev);
+	struct ff_effect effect;
+	int ordinal;
+
+	effect_set_default(&effect);
+
+	if (effect.u.haptic.hid_usage == (HID_HP_WAVEFORMRELEASE & HID_USAGE)) {
+		ordinal = haptic->release_ordinal;
+		if (!ordinal) {
+			ordinal = HID_HAPTIC_ORDINAL_WAVEFORMNONE;
+			if (haptic->mode == HID_HAPTIC_MODE_HOST)
+				switch_mode(hdev, haptic, HID_HAPTIC_MODE_DEVICE);
+		} else
+			effect.u.haptic.hid_usage = HID_HP_WAVEFORMRELEASE & HID_USAGE;
+
+		fill_effect_buf(haptic, &effect.u.haptic, &haptic->effect[effect_id],
+				ordinal);
+	} else if (effect.u.haptic.hid_usage == (HID_HP_WAVEFORMPRESS & HID_USAGE)) {
+		ordinal = haptic->press_ordinal;
+		if (!ordinal) {
+			ordinal = HID_HAPTIC_ORDINAL_WAVEFORMNONE;
+			if (haptic->mode == HID_HAPTIC_MODE_HOST)
+				switch_mode(hdev, haptic, HID_HAPTIC_MODE_DEVICE);
+		}
+		else
+			effect.u.haptic.hid_usage = HID_HP_WAVEFORMPRESS & HID_USAGE;
+
+		fill_effect_buf(haptic, &effect.u.haptic, &haptic->effect[effect_id],
+				ordinal);
+	}
+
+	return 0;
+}
+
+static void hid_haptic_destroy(struct ff_device *ff)
+{
+	struct hid_haptic_device *haptic = ff->private;
+	struct hid_device *hdev = haptic->hdev;
+	int r;
+
+	if (hdev)
+		put_device(&hdev->dev);
+
+	kfree(haptic->stop_effect.report_buf);
+	haptic->stop_effect.report_buf = NULL;
+
+	if (haptic->effect) {
+		for (r = 0; r < ff->max_effects; r++)
+			kfree(haptic->effect[r].report_buf);
+		kfree(haptic->effect);
+	}
+	haptic->effect = NULL;
+
+	destroy_workqueue(haptic->wq);
+	haptic->wq = NULL;
+
+	kfree(haptic->duration_map);
+	haptic->duration_map = NULL;
+
+	kfree(haptic->hid_usage_map);
+	haptic->hid_usage_map = NULL;
+
+	module_put(THIS_MODULE);
+}
+
+int hid_haptic_init(struct hid_device *hdev,
+		    struct hid_haptic_device *haptic,
+		    struct input_dev *dev)
+{
+	struct ff_device *ff;
+	int ret = 0, r;
+	struct ff_haptic_effect stop_effect = {
+		.hid_usage = HID_HP_WAVEFORMSTOP & HID_USAGE,
+	};
+	const char *prefix = "hid-haptic";
+	char *name;
+	int (*flush)(struct input_dev *dev, struct file *file);
+	int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
+
+	haptic->hdev = hdev;
+	haptic->max_waveform_id = max(2u, haptic->max_waveform_id);
+	haptic->max_duration_id = max(2u, haptic->max_duration_id);
+
+	haptic->hid_usage_map = kcalloc(haptic->max_waveform_id + 1,
+					sizeof(u16), GFP_KERNEL);
+	if (!haptic->hid_usage_map) {
+		ret = -ENOMEM;
+		goto exit;
+	}
+	haptic->duration_map = kcalloc(haptic->max_duration_id + 1,
+				       sizeof(u32), GFP_KERNEL);
+	if (!haptic->duration_map) {
+		ret = -ENOMEM;
+		goto usage_map;
+	}
+
+	if (haptic->max_waveform_id != haptic->max_duration_id)
+		dev_warn(&hdev->dev,
+			 "Haptic duration and waveform lists have different max id (%u and %u).\n",
+			 haptic->max_duration_id, haptic->max_waveform_id);
+
+	haptic->hid_usage_map[HID_HAPTIC_ORDINAL_WAVEFORMNONE] =
+		HID_HP_WAVEFORMNONE & HID_USAGE;
+	haptic->hid_usage_map[HID_HAPTIC_ORDINAL_WAVEFORMSTOP] =
+		HID_HP_WAVEFORMSTOP & HID_USAGE;
+
+	mutex_init(&haptic->auto_trigger_mutex);
+	for (r = 0; r < haptic->auto_trigger_report->maxfield; r++)
+		parse_auto_trigger_field(haptic, haptic->auto_trigger_report->field[r]);
+
+	haptic->input_dev = dev;
+	haptic->manual_trigger_report_len =
+		hid_report_len(haptic->manual_trigger_report);
+	mutex_init(&haptic->manual_trigger_mutex);
+	name = kmalloc(strlen(prefix) + strlen(hdev->name) + 2, GFP_KERNEL);
+	if (name) {
+		sprintf(name, "%s %s", prefix, hdev->name);
+		haptic->wq = create_singlethread_workqueue(name);
+		kfree(name);
+	}
+	if (!haptic->wq) {
+		ret = -ENOMEM;
+		goto duration_map;
+	}
+	haptic->effect = kzalloc_objs(struct hid_haptic_effect, FF_MAX_EFFECTS);
+	if (!haptic->effect) {
+		ret = -ENOMEM;
+		goto output_queue;
+	}
+	for (r = 0; r < FF_MAX_EFFECTS; r++) {
+		haptic->effect[r].report_buf =
+			hid_alloc_report_buf(haptic->manual_trigger_report,
+					     GFP_KERNEL);
+		if (!haptic->effect[r].report_buf) {
+			dev_err(&hdev->dev,
+				"Failed to allocate a buffer for an effect.\n");
+			ret = -ENOMEM;
+			goto buffer_free;
+		}
+		haptic->effect[r].input_dev = dev;
+		INIT_WORK(&haptic->effect[r].work, haptic_work_handler);
+	}
+	haptic->stop_effect.report_buf =
+		hid_alloc_report_buf(haptic->manual_trigger_report,
+				     GFP_KERNEL);
+	if (!haptic->stop_effect.report_buf) {
+		dev_err(&hdev->dev,
+			"Failed to allocate a buffer for stop effect.\n");
+		ret = -ENOMEM;
+		goto buffer_free;
+	}
+	haptic->stop_effect.input_dev = dev;
+	INIT_WORK(&haptic->stop_effect.work, haptic_work_handler);
+	fill_effect_buf(haptic, &stop_effect, &haptic->stop_effect,
+			HID_HAPTIC_ORDINAL_WAVEFORMSTOP);
+
+	input_set_capability(dev, EV_FF, FF_HAPTIC);
+
+	flush = dev->flush;
+	event = dev->event;
+	ret = input_ff_create(dev, FF_MAX_EFFECTS);
+	if (ret) {
+		dev_err(&hdev->dev, "Failed to create ff device.\n");
+		goto stop_buffer_free;
+	}
+
+	ff = dev->ff;
+	ff->private = haptic;
+	ff->upload = hid_haptic_upload_effect;
+	ff->playback = hid_haptic_playback;
+	ff->erase = hid_haptic_erase;
+	ff->destroy = hid_haptic_destroy;
+	if (!try_module_get(THIS_MODULE)) {
+		dev_err(&hdev->dev, "Failed to increase module count.\n");
+		goto input_free;
+	}
+	if (!get_device(&hdev->dev)) {
+		dev_err(&hdev->dev, "Failed to get hdev device.\n");
+		module_put(THIS_MODULE);
+		goto input_free;
+	}
+	return 0;
+
+input_free:
+	input_ff_destroy(dev);
+	/* Restore dev flush and event */
+	dev->flush = flush;
+	dev->event = event;
+	return ret;
+stop_buffer_free:
+	kfree(haptic->stop_effect.report_buf);
+	haptic->stop_effect.report_buf = NULL;
+buffer_free:
+	while (--r >= 0)
+		kfree(haptic->effect[r].report_buf);
+	kfree(haptic->effect);
+	haptic->effect = NULL;
+output_queue:
+	destroy_workqueue(haptic->wq);
+	haptic->wq = NULL;
+duration_map:
+	kfree(haptic->duration_map);
+	haptic->duration_map = NULL;
+usage_map:
+	kfree(haptic->hid_usage_map);
+	haptic->hid_usage_map = NULL;
+exit:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_init);
+
+void hid_haptic_pressure_reset(struct hid_haptic_device *haptic)
+{
+	haptic->pressure_sum = 0;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_pressure_reset);
+
+void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
+				 __s32 pressure)
+{
+	haptic->pressure_sum += pressure;
+}
+EXPORT_SYMBOL_GPL(hid_haptic_pressure_increase);