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hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/input/touchscreen/sur40.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Surface2.0/SUR40/PixelSense input driver
34  *
....@@ -14,11 +15,6 @@
1415  *
1516  * and from the v4l2-pci-skeleton driver,
1617  * Copyright (c) Copyright 2014 Cisco Systems, Inc.
17
- *
18
- * This program is free software; you can redistribute it and/or
19
- * modify it under the terms of the GNU General Public License as
20
- * published by the Free Software Foundation; either version 2 of
21
- * the License, or (at your option) any later version.
2218  */
2319 
2420 #include <linux/kernel.h>
....@@ -31,7 +27,7 @@
3127 #include <linux/uaccess.h>
3228 #include <linux/usb.h>
3329 #include <linux/printk.h>
34
-#include <linux/input-polldev.h>
30
+#include <linux/input.h>
3531 #include <linux/input/mt.h>
3632 #include <linux/usb/input.h>
3733 #include <linux/videodev2.h>
....@@ -190,7 +186,7 @@
190186 		.width  = SENSOR_RES_X / 2,
191187 		.height = SENSOR_RES_Y / 2,
192188 		.field = V4L2_FIELD_NONE,
193
-		.colorspace = V4L2_COLORSPACE_SRGB,
189
+		.colorspace = V4L2_COLORSPACE_RAW,
194190 		.bytesperline = SENSOR_RES_X / 2,
195191 		.sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2),
196192 	},
....@@ -199,7 +195,7 @@
199195 		.width  = SENSOR_RES_X / 2,
200196 		.height = SENSOR_RES_Y / 2,
201197 		.field = V4L2_FIELD_NONE,
202
-		.colorspace = V4L2_COLORSPACE_SRGB,
198
+		.colorspace = V4L2_COLORSPACE_RAW,
203199 		.bytesperline = SENSOR_RES_X / 2,
204200 		.sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2),
205201 	}
....@@ -210,7 +206,7 @@
210206 
211207 	struct usb_device *usbdev;
212208 	struct device *dev;
213
-	struct input_polled_dev *input;
209
+	struct input_dev *input;
214210 
215211 	struct v4l2_device v4l2;
216212 	struct video_device vdev;
....@@ -374,6 +370,10 @@
374370 		goto error;
375371 
376372 	result = sur40_command(dev, SUR40_GET_VERSION, 0x03, buffer, 12);
373
+	if (result < 0)
374
+		goto error;
375
+
376
+	result = 0;
377377 
378378 	/*
379379 	 * Discard the result buffer - no known data inside except
....@@ -385,22 +385,22 @@
385385 }
386386 
387387 /*
388
- * Callback routines from input_polled_dev
388
+ * Callback routines from input_dev
389389  */
390390 
391391 /* Enable the device, polling will now start. */
392
-static void sur40_open(struct input_polled_dev *polldev)
392
+static int sur40_open(struct input_dev *input)
393393 {
394
-	struct sur40_state *sur40 = polldev->private;
394
+	struct sur40_state *sur40 = input_get_drvdata(input);
395395 
396396 	dev_dbg(sur40->dev, "open\n");
397
-	sur40_init(sur40);
397
+	return sur40_init(sur40);
398398 }
399399 
400400 /* Disable device, polling has stopped. */
401
-static void sur40_close(struct input_polled_dev *polldev)
401
+static void sur40_close(struct input_dev *input)
402402 {
403
-	struct sur40_state *sur40 = polldev->private;
403
+	struct sur40_state *sur40 = input_get_drvdata(input);
404404 
405405 	dev_dbg(sur40->dev, "close\n");
406406 	/*
....@@ -452,13 +452,10 @@
452452 }
453453 
454454 /* core function: poll for new input data */
455
-static void sur40_poll(struct input_polled_dev *polldev)
455
+static void sur40_poll(struct input_dev *input)
456456 {
457
-	struct sur40_state *sur40 = polldev->private;
458
-	struct input_dev *input = polldev->input;
457
+	struct sur40_state *sur40 = input_get_drvdata(input);
459458 	int result, bulk_read, need_blobs, packet_blobs, i;
460
-	u32 uninitialized_var(packet_id);
461
-
462459 	struct sur40_header *header = &sur40->bulk_in_buffer->header;
463460 	struct sur40_blob *inblob = &sur40->bulk_in_buffer->blobs[0];
464461 
....@@ -492,7 +489,7 @@
492489 		if (need_blobs == -1) {
493490 			need_blobs = le16_to_cpu(header->count);
494491 			dev_dbg(sur40->dev, "need %d blobs\n", need_blobs);
495
-			packet_id = le32_to_cpu(header->packet_id);
492
+			/* packet_id = le32_to_cpu(header->packet_id); */
496493 		}
497494 
498495 		/*
....@@ -617,10 +614,9 @@
617614 }
618615 
619616 /* Initialize input device parameters. */
620
-static void sur40_input_setup(struct input_dev *input_dev)
617
+static int sur40_input_setup_events(struct input_dev *input_dev)
621618 {
622
-	__set_bit(EV_KEY, input_dev->evbit);
623
-	__set_bit(EV_ABS, input_dev->evbit);
619
+	int error;
624620 
625621 	input_set_abs_params(input_dev, ABS_MT_POSITION_X,
626622 			     0, SENSOR_RES_X, 0, 0);
....@@ -641,8 +637,14 @@
641637 
642638 	input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
643639 
644
-	input_mt_init_slots(input_dev, MAX_CONTACTS,
645
-			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
640
+	error = input_mt_init_slots(input_dev, MAX_CONTACTS,
641
+				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
642
+	if (error) {
643
+		dev_err(input_dev->dev.parent, "failed to set up slots\n");
644
+		return error;
645
+	}
646
+
647
+	return 0;
646648 }
647649 
648650 /* Check candidate USB interface. */
....@@ -653,7 +655,7 @@
653655 	struct sur40_state *sur40;
654656 	struct usb_host_interface *iface_desc;
655657 	struct usb_endpoint_descriptor *endpoint;
656
-	struct input_polled_dev *poll_dev;
658
+	struct input_dev *input;
657659 	int error;
658660 
659661 	/* Check if we really have the right interface. */
....@@ -674,8 +676,8 @@
674676 	if (!sur40)
675677 		return -ENOMEM;
676678 
677
-	poll_dev = input_allocate_polled_device();
678
-	if (!poll_dev) {
679
+	input = input_allocate_device();
680
+	if (!input) {
679681 		error = -ENOMEM;
680682 		goto err_free_dev;
681683 	}
....@@ -685,26 +687,33 @@
685687 	spin_lock_init(&sur40->qlock);
686688 	mutex_init(&sur40->lock);
687689 
688
-	/* Set up polled input device control structure */
689
-	poll_dev->private = sur40;
690
-	poll_dev->poll_interval = POLL_INTERVAL;
691
-	poll_dev->open = sur40_open;
692
-	poll_dev->poll = sur40_poll;
693
-	poll_dev->close = sur40_close;
694
-
695690 	/* Set up regular input device structure */
696
-	sur40_input_setup(poll_dev->input);
697
-
698
-	poll_dev->input->name = DRIVER_LONG;
699
-	usb_to_input_id(usbdev, &poll_dev->input->id);
691
+	input->name = DRIVER_LONG;
692
+	usb_to_input_id(usbdev, &input->id);
700693 	usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys));
701694 	strlcat(sur40->phys, "/input0", sizeof(sur40->phys));
702
-	poll_dev->input->phys = sur40->phys;
703
-	poll_dev->input->dev.parent = &interface->dev;
695
+	input->phys = sur40->phys;
696
+	input->dev.parent = &interface->dev;
697
+
698
+	input->open = sur40_open;
699
+	input->close = sur40_close;
700
+
701
+	error = sur40_input_setup_events(input);
702
+	if (error)
703
+		goto err_free_input;
704
+
705
+	input_set_drvdata(input, sur40);
706
+	error = input_setup_polling(input, sur40_poll);
707
+	if (error) {
708
+		dev_err(&interface->dev, "failed to set up polling");
709
+		goto err_free_input;
710
+	}
711
+
712
+	input_set_poll_interval(input, POLL_INTERVAL);
704713 
705714 	sur40->usbdev = usbdev;
706715 	sur40->dev = &interface->dev;
707
-	sur40->input = poll_dev;
716
+	sur40->input = input;
708717 
709718 	/* use the bulk-in endpoint tested above */
710719 	sur40->bulk_in_size = usb_endpoint_maxp(endpoint);
....@@ -713,11 +722,11 @@
713722 	if (!sur40->bulk_in_buffer) {
714723 		dev_err(&interface->dev, "Unable to allocate input buffer.");
715724 		error = -ENOMEM;
716
-		goto err_free_polldev;
725
+		goto err_free_input;
717726 	}
718727 
719728 	/* register the polled input device */
720
-	error = input_register_polled_device(poll_dev);
729
+	error = input_register_device(input);
721730 	if (error) {
722731 		dev_err(&interface->dev,
723732 			"Unable to register polled input device.");
....@@ -801,8 +810,8 @@
801810 	v4l2_device_unregister(&sur40->v4l2);
802811 err_free_buffer:
803812 	kfree(sur40->bulk_in_buffer);
804
-err_free_polldev:
805
-	input_free_polled_device(sur40->input);
813
+err_free_input:
814
+	input_free_device(input);
806815 err_free_dev:
807816 	kfree(sur40);
808817 
....@@ -818,8 +827,7 @@
818827 	video_unregister_device(&sur40->vdev);
819828 	v4l2_device_unregister(&sur40->v4l2);
820829 
821
-	input_unregister_polled_device(sur40->input);
822
-	input_free_polled_device(sur40->input);
830
+	input_unregister_device(sur40->input);
823831 	kfree(sur40->bulk_in_buffer);
824832 	kfree(sur40);
825833 
....@@ -934,10 +942,6 @@
934942 	strlcpy(cap->driver, DRIVER_SHORT, sizeof(cap->driver));
935943 	strlcpy(cap->card, DRIVER_LONG, sizeof(cap->card));
936944 	usb_make_path(sur40->usbdev, cap->bus_info, sizeof(cap->bus_info));
937
-	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH |
938
-		V4L2_CAP_READWRITE |
939
-		V4L2_CAP_STREAMING;
940
-	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
941945 	return 0;
942946 }
943947 
....@@ -1167,6 +1171,8 @@
11671171 	.fops = &sur40_video_fops,
11681172 	.ioctl_ops = &sur40_video_ioctl_ops,
11691173 	.release = video_device_release_empty,
1174
+	.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH |
1175
+		       V4L2_CAP_READWRITE | V4L2_CAP_STREAMING,
11701176 };
11711177 
11721178 /* USB-specific object needed to register this driver with the USB subsystem. */