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, 204 insertions, 0 deletions

diff --git a/drivers/hid/hid-pl.c b/drivers/hid/hid-pl.c
new file mode 100644
index 000000000..cae56a6c9
--- /dev/null
+++ b/drivers/hid/hid-pl.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Force feedback support for PantherLord/GreenAsia based devices
+ *
+ *  The devices are distributed under various names and the same USB device ID
+ *  can be used in both adapters and actual game controllers.
+ *
+ *  0810:0001 "Twin USB Joystick"
+ *   - tested with PantherLord USB/PS2 2in1 Adapter
+ *   - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT)
+ *
+ *  0e8f:0003 "GreenAsia Inc.    USB Joystick     "
+ *   - tested with König Gaming gamepad
+ *
+ *  0e8f:0003 "GASIA USB Gamepad"
+ *   - another version of the König gamepad
+ *
+ *  0f30:0111 "Saitek Color Rumble Pad"
+ *
+ *  Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
+ */
+
+/*
+ */
+
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/hid.h>
+
+#include "hid-ids.h"
+
+#ifdef CONFIG_PANTHERLORD_FF
+
+struct plff_device {
+	struct hid_report *report;
+	s32 maxval;
+	s32 *strong;
+	s32 *weak;
+};
+
+static int hid_plff_play(struct input_dev *dev, void *data,
+			 struct ff_effect *effect)
+{
+	struct hid_device *hid = input_get_drvdata(dev);
+	struct plff_device *plff = data;
+	int left, right;
+
+	left = effect->u.rumble.strong_magnitude;
+	right = effect->u.rumble.weak_magnitude;
+	hid_dbg(dev, "called with 0x%04x 0x%04x", left, right);
+
+	left = left * plff->maxval / 0xffff;
+	right = right * plff->maxval / 0xffff;
+
+	*plff->strong = left;
+	*plff->weak = right;
+	hid_dbg(dev, "running with 0x%02x 0x%02x", left, right);
+	hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT);
+
+	return 0;
+}
+
+static int pl_input_configured(struct hid_device *hid, struct hid_input *hidinput)
+{
+	struct plff_device *plff;
+	struct hid_report *report;
+	struct list_head *report_list =
+			&hid->report_enum[HID_OUTPUT_REPORT].report_list;
+	struct input_dev *dev = hidinput->input;
+	int error;
+	s32 maxval;
+	s32 *strong;
+	s32 *weak;
+
+	/* The device contains one output report per physical device, all
+	   containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
+	   absolute values.
+
+	   The input reports also contain a field which contains
+	   8 ff00.0001 usages and 8 boolean values. Their meaning is
+	   currently unknown.
+
+	   A version of the 0e8f:0003 exists that has all the values in
+	   separate fields and misses the extra input field, thus resembling
+	   Zeroplus (hid-zpff) devices.
+	*/
+
+	if (!list_is_first(&hidinput->list, &hid->inputs))
+		return 0;
+
+	report = list_first_entry_or_null(report_list, struct hid_report, list);
+	if (!report) {
+		hid_err(hid, "no output reports found\n");
+		return -ENODEV;
+	}
+	if (report->maxfield < 1) {
+		hid_err(hid, "no fields in the report\n");
+		return -ENODEV;
+	}
+
+	maxval = 0x7f;
+	if (report->field[0]->report_count >= 4) {
+		report->field[0]->value[0] = 0x00;
+		report->field[0]->value[1] = 0x00;
+		strong = &report->field[0]->value[2];
+		weak = &report->field[0]->value[3];
+		hid_dbg(hid, "detected single-field device");
+	} else if (report->field[0]->maxusage == 1 &&
+		   report->field[0]->usage[0].hid ==
+			(HID_UP_LED | 0x43) &&
+		   report->maxfield >= 4 &&
+		   report->field[0]->report_count >= 1 &&
+		   report->field[1]->report_count >= 1 &&
+		   report->field[2]->report_count >= 1 &&
+		   report->field[3]->report_count >= 1) {
+		report->field[0]->value[0] = 0x00;
+		report->field[1]->value[0] = 0x00;
+		strong = &report->field[2]->value[0];
+		weak = &report->field[3]->value[0];
+		if (hid->vendor == USB_VENDOR_ID_JESS2)
+			maxval = 0xff;
+		hid_dbg(hid, "detected 4-field device");
+	} else {
+		hid_err(hid, "not enough fields or values\n");
+		return -ENODEV;
+	}
+
+	plff = kzalloc_obj(struct plff_device);
+	if (!plff)
+		return -ENOMEM;
+
+	dev = hidinput->input;
+
+	set_bit(FF_RUMBLE, dev->ffbit);
+
+	error = input_ff_create_memless(dev, plff, hid_plff_play);
+	if (error) {
+		kfree(plff);
+		return error;
+	}
+
+	plff->report = report;
+	plff->strong = strong;
+	plff->weak = weak;
+	plff->maxval = maxval;
+
+	*strong = 0x00;
+	*weak = 0x00;
+	hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT);
+
+	return 0;
+}
+#else
+static inline int pl_input_configured(struct hid_device *hid,
+				      struct hid_input *hidinput)
+{
+	return 0;
+}
+#endif
+
+static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+	int ret;
+
+	if (id->driver_data)
+		hdev->quirks |= HID_QUIRK_MULTI_INPUT;
+
+	ret = hid_parse(hdev);
+	if (ret) {
+		hid_err(hdev, "parse failed\n");
+		return ret;
+	}
+
+	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+	if (ret) {
+		hid_err(hdev, "hw start failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+static const struct hid_device_id pl_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR),
+		.driver_data = 1 }, /* Twin USB Joystick */
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR),
+		.driver_data = 1 }, /* Twin USB Joystick */
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD), },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, pl_devices);
+
+static struct hid_driver pl_driver = {
+	.name = "pantherlord",
+	.id_table = pl_devices,
+	.probe = pl_probe,
+	.input_configured = pl_input_configured,
+};
+module_hid_driver(pl_driver);
+
+MODULE_DESCRIPTION("Force feedback support for PantherLord/GreenAsia based devices");
+MODULE_LICENSE("GPL");