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Date: Mon, 10 Feb 2014 12:58:56 -0500
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Benjamin Tissoires <benjamin.tissoires@...il.com>,
Jiri Kosina <jkosina@...e.cz>,
David Herrmann <dh.herrmann@...il.com>,
linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 11/14] HID: sony: remove hid_output_raw_report calls
We can not directly change the underlying struct hid_ll_driver here
as we did for hdev->hid_output_raw_report.
So allocate a struct ll_driver, and replace the old one when removing
the device.
To get a fully functional driver, we must also split the function
sixaxis_usb_output_raw_report() in 2, one regarding output_report, and
the other for raw_request.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---
drivers/hid/hid-sony.c | 75 ++++++++++++++++++++++++++++++++++----------------
1 file changed, 52 insertions(+), 23 deletions(-)
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index d980943..dbbcd0c8 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -507,6 +507,8 @@ struct sony_sc {
struct work_struct state_worker;
struct power_supply battery;
+ struct hid_ll_driver *prev_ll_driver;
+
#ifdef CONFIG_SONY_FF
__u8 left;
__u8 right;
@@ -760,38 +762,52 @@ static int sony_mapping(struct hid_device *hdev, struct hid_input *hi,
/*
* 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()
+ * like it should according to usbhid/hid-core.c::usbhid_output_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)
+static int sixaxis_usb_output_report(struct hid_device *hid, __u8 *buf,
+ size_t count)
+{
+ return hid_hw_raw_request(hid, buf[0], buf, count, HID_OUTPUT_REPORT,
+ HID_REQ_SET_REPORT);
+}
+
+/*
+ * There is also another issue about the SET_REPORT command 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_raw_request(struct hid_device *hid,
+ unsigned char reportnum, __u8 *buf,
+ size_t len, unsigned char rtype, int reqtype)
{
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;
+ u8 usb_dir;
+ unsigned int usb_pipe;
- if (report_type == HID_OUTPUT_REPORT) {
+ if (reqtype == HID_REQ_SET_REPORT) {
/* Don't send the Report ID */
buf++;
- count--;
+ len--;
+ usb_dir = USB_DIR_OUT;
+ usb_pipe = usb_sndctrlpipe(dev, 0);
+ } else {
+ usb_dir = USB_DIR_IN;
+ usb_pipe = usb_rcvctrlpipe(dev, 0);
}
- 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,
+ ret = usb_control_msg(dev, usb_pipe, reqtype,
+ usb_dir | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ ((rtype + 1) << 8) | reportnum,
+ interface->desc.bInterfaceNumber, buf, len,
USB_CTRL_SET_TIMEOUT);
- /* Count also the Report ID, in case of an Output report. */
- if (ret > 0 && report_type == HID_OUTPUT_REPORT)
+ /* Count also the Report ID. */
+ if (ret > 0 && reqtype == HID_REQ_SET_REPORT)
ret++;
return ret;
@@ -1047,7 +1063,7 @@ static void sixaxis_state_worker(struct work_struct *work)
buf[10] |= sc->led_state[2] << 3;
buf[10] |= sc->led_state[3] << 4;
- hid_output_raw_report(sc->hdev, buf, sizeof(buf), HID_OUTPUT_REPORT);
+ hid_hw_output_report(sc->hdev, buf, sizeof(buf));
}
static void dualshock4_state_worker(struct work_struct *work)
@@ -1254,6 +1270,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
unsigned long quirks = id->driver_data;
struct sony_sc *sc;
unsigned int connect_mask = HID_CONNECT_DEFAULT;
+ struct hid_ll_driver *ll_driver;
sc = devm_kzalloc(&hdev->dev, sizeof(*sc), GFP_KERNEL);
if (sc == NULL) {
@@ -1285,13 +1302,20 @@ 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;
+ ll_driver = devm_kzalloc(&hdev->dev, sizeof(*ll_driver),
+ GFP_KERNEL);
+ if (ll_driver == NULL)
+ return -ENOMEM;
+ sc->prev_ll_driver = hdev->ll_driver;
+ *ll_driver = *hdev->ll_driver;
+ hdev->ll_driver = ll_driver;
+ ll_driver->output_report = sixaxis_usb_output_report;
+ ll_driver->raw_request = sixaxis_usb_raw_request;
ret = sixaxis_set_operational_usb(hdev);
INIT_WORK(&sc->state_worker, sixaxis_state_worker);
- }
- else if (sc->quirks & SIXAXIS_CONTROLLER_BT)
+ } else if (sc->quirks & SIXAXIS_CONTROLLER_BT) {
ret = sixaxis_set_operational_bt(hdev);
- else if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
+ } else if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
/* Report 5 (31 bytes) is used to send data to the controller via USB */
ret = sony_set_output_report(sc, 0x05, 248);
if (ret < 0)
@@ -1339,6 +1363,8 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
err_close:
hid_hw_close(hdev);
err_stop:
+ if (sc->prev_ll_driver)
+ hdev->ll_driver = sc->prev_ll_driver;
if (sc->quirks & SONY_LED_SUPPORT)
sony_leds_remove(hdev);
if (sc->quirks & SONY_BATTERY_SUPPORT)
@@ -1351,6 +1377,9 @@ static void sony_remove(struct hid_device *hdev)
{
struct sony_sc *sc = hid_get_drvdata(hdev);
+ if (sc->prev_ll_driver)
+ hdev->ll_driver = sc->prev_ll_driver;
+
if (sc->quirks & SONY_LED_SUPPORT)
sony_leds_remove(hdev);
--
1.8.3.1
--
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