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Commit e534a935 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
Browse files

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 3a75b249
(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: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: default avatarAntonio Ospite <ao2@ao2.it>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 65ab2fc4

drivers/hid/hid-sony.c

+14 −46
Original line number Diff line number Diff line
@@ -29,7 +29,6 @@ 
#include <linux/hid.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/usb.h>

#include <linux/leds.h>

#include <linux/power_supply.h>

#include <linux/spinlock.h>
@@ -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);

drivers/hid/hidraw.c

+2 −1
Original line number Diff line number Diff line
@@ -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:

drivers/hid/usbhid/hid-core.c

+6 −1
Original line number Diff line number Diff line
@@ -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.*/

	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++;

include/linux/hid.h

+2 −0
Original line number Diff line number Diff line
@@ -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