forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/drivers/usb/gadget/udc/renesas_usb3.c
....@@ -352,6 +352,8 @@
352352 	int disabled_count;
353353 
354354 	struct usb_request *ep0_req;
355
+
356
+	enum usb_role connection_state;
355357 	u16 test_mode;
356358 	u8 ep0_buf[USB3_EP0_BUF_SIZE];
357359 	bool softconnect;
....@@ -360,6 +362,7 @@
360362 	bool extcon_usb;		/* check vbus and set EXTCON_USB */
361363 	bool forced_b_device;
362364 	bool start_to_connect;
365
+	bool role_sw_by_connector;
363366 };
364367 
365368 #define gadget_to_renesas_usb3(_gadget)	\
....@@ -700,8 +703,11 @@
700703 	unsigned long flags;
701704 
702705 	spin_lock_irqsave(&usb3->lock, flags);
703
-	usb3_set_mode_by_role_sw(usb3, host);
704
-	usb3_vbus_out(usb3, a_dev);
706
+	if (!usb3->role_sw_by_connector ||
707
+	    usb3->connection_state != USB_ROLE_NONE) {
708
+		usb3_set_mode_by_role_sw(usb3, host);
709
+		usb3_vbus_out(usb3, a_dev);
710
+	}
705711 	/* for A-Peripheral or forced B-device mode */
706712 	if ((!host && a_dev) || usb3->start_to_connect)
707713 		usb3_connect(usb3);
....@@ -717,7 +723,8 @@
717723 {
718724 	usb3->extcon_host = usb3_is_a_device(usb3);
719725 
720
-	if (usb3->extcon_host && !usb3->forced_b_device)
726
+	if ((!usb3->role_sw_by_connector && usb3->extcon_host &&
727
+	     !usb3->forced_b_device) || usb3->connection_state == USB_ROLE_HOST)
721728 		usb3_mode_config(usb3, true, true);
722729 	else
723730 		usb3_mode_config(usb3, false, false);
....@@ -766,6 +773,18 @@
766773 	usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM);
767774 	usb3_start_usb2_connection(usb3);
768775 	usb3_transition_to_default_state(usb3, false);
776
+}
777
+
778
+static void usb3_irq_epc_int_1_suspend(struct renesas_usb3 *usb3)
779
+{
780
+	usb3_disable_irq_1(usb3, USB_INT_1_B2_SPND);
781
+
782
+	if (usb3->gadget.speed != USB_SPEED_UNKNOWN &&
783
+	    usb3->gadget.state != USB_STATE_NOTATTACHED) {
784
+		if (usb3->driver && usb3->driver->suspend)
785
+			usb3->driver->suspend(&usb3->gadget);
786
+		usb_gadget_set_state(&usb3->gadget, USB_STATE_SUSPENDED);
787
+	}
769788 }
770789 
771790 static void usb3_irq_epc_int_1_disable(struct renesas_usb3 *usb3)
....@@ -852,6 +871,9 @@
852871 
853872 	if (int_sta_1 & USB_INT_1_B2_RSUM)
854873 		usb3_irq_epc_int_1_resume(usb3);
874
+
875
+	if (int_sta_1 & USB_INT_1_B2_SPND)
876
+		usb3_irq_epc_int_1_suspend(usb3);
855877 
856878 	if (int_sta_1 & USB_INT_1_SPEED)
857879 		usb3_irq_epc_int_1_speed(usb3);
....@@ -1162,7 +1184,7 @@
11621184 static void usb3_p0_xfer(struct renesas_usb3_ep *usb3_ep,
11631185 			 struct renesas_usb3_request *usb3_req)
11641186 {
1165
-	int ret = -EAGAIN;
1187
+	int ret;
11661188 
11671189 	if (usb3_ep->dir_in)
11681190 		ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_P0_WRITE);
....@@ -1538,10 +1560,10 @@
15381560 static bool usb3_std_req_set_address(struct renesas_usb3 *usb3,
15391561 				     struct usb_ctrlrequest *ctrl)
15401562 {
1541
-	if (ctrl->wValue >= 128)
1563
+	if (le16_to_cpu(ctrl->wValue) >= 128)
15421564 		return true;	/* stall */
15431565 
1544
-	usb3_set_device_address(usb3, ctrl->wValue);
1566
+	usb3_set_device_address(usb3, le16_to_cpu(ctrl->wValue));
15451567 	usb3_set_p0_con_for_no_data(usb3);
15461568 
15471569 	return false;
....@@ -1576,6 +1598,7 @@
15761598 	struct renesas_usb3_ep *usb3_ep;
15771599 	int num;
15781600 	u16 status = 0;
1601
+	__le16 tx_data;
15791602 
15801603 	switch (ctrl->bRequestType & USB_RECIP_MASK) {
15811604 	case USB_RECIP_DEVICE:
....@@ -1598,10 +1621,10 @@
15981621 	}
15991622 
16001623 	if (!stall) {
1601
-		status = cpu_to_le16(status);
1624
+		tx_data = cpu_to_le16(status);
16021625 		dev_dbg(usb3_to_dev(usb3), "get_status: req = %p\n",
16031626 			usb_req_to_usb3_req(usb3->ep0_req));
1604
-		usb3_pipe0_internal_xfer(usb3, &status, sizeof(status),
1627
+		usb3_pipe0_internal_xfer(usb3, &tx_data, sizeof(tx_data),
16051628 					 usb3_pipe0_get_status_completion);
16061629 	}
16071630 
....@@ -1766,7 +1789,7 @@
17661789 static bool usb3_std_req_set_configuration(struct renesas_usb3 *usb3,
17671790 					   struct usb_ctrlrequest *ctrl)
17681791 {
1769
-	if (ctrl->wValue > 0)
1792
+	if (le16_to_cpu(ctrl->wValue) > 0)
17701793 		usb3_set_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
17711794 	else
17721795 		usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
....@@ -2333,26 +2356,79 @@
23332356 	.set_selfpowered	= renesas_usb3_set_selfpowered,
23342357 };
23352358 
2336
-static enum usb_role renesas_usb3_role_switch_get(struct device *dev)
2359
+static enum usb_role renesas_usb3_role_switch_get(struct usb_role_switch *sw)
23372360 {
2338
-	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2361
+	struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
23392362 	enum usb_role cur_role;
23402363 
2341
-	pm_runtime_get_sync(dev);
2364
+	pm_runtime_get_sync(usb3_to_dev(usb3));
23422365 	cur_role = usb3_is_host(usb3) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
2343
-	pm_runtime_put(dev);
2366
+	pm_runtime_put(usb3_to_dev(usb3));
23442367 
23452368 	return cur_role;
23462369 }
23472370 
2348
-static int renesas_usb3_role_switch_set(struct device *dev,
2349
-					enum usb_role role)
2371
+static void handle_ext_role_switch_states(struct device *dev,
2372
+					    enum usb_role role)
23502373 {
23512374 	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
23522375 	struct device *host = usb3->host_dev;
2353
-	enum usb_role cur_role = renesas_usb3_role_switch_get(dev);
2376
+	enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
23542377 
2355
-	pm_runtime_get_sync(dev);
2378
+	switch (role) {
2379
+	case USB_ROLE_NONE:
2380
+		usb3->connection_state = USB_ROLE_NONE;
2381
+		if (cur_role == USB_ROLE_HOST)
2382
+			device_release_driver(host);
2383
+		if (usb3->driver)
2384
+			usb3_disconnect(usb3);
2385
+		usb3_vbus_out(usb3, false);
2386
+		break;
2387
+	case USB_ROLE_DEVICE:
2388
+		if (usb3->connection_state == USB_ROLE_NONE) {
2389
+			usb3->connection_state = USB_ROLE_DEVICE;
2390
+			usb3_set_mode(usb3, false);
2391
+			if (usb3->driver)
2392
+				usb3_connect(usb3);
2393
+		} else if (cur_role == USB_ROLE_HOST)  {
2394
+			device_release_driver(host);
2395
+			usb3_set_mode(usb3, false);
2396
+			if (usb3->driver)
2397
+				usb3_connect(usb3);
2398
+		}
2399
+		usb3_vbus_out(usb3, false);
2400
+		break;
2401
+	case USB_ROLE_HOST:
2402
+		if (usb3->connection_state == USB_ROLE_NONE) {
2403
+			if (usb3->driver)
2404
+				usb3_disconnect(usb3);
2405
+
2406
+			usb3->connection_state = USB_ROLE_HOST;
2407
+			usb3_set_mode(usb3, true);
2408
+			usb3_vbus_out(usb3, true);
2409
+			if (device_attach(host) < 0)
2410
+				dev_err(dev, "device_attach(host) failed\n");
2411
+		} else if (cur_role == USB_ROLE_DEVICE) {
2412
+			usb3_disconnect(usb3);
2413
+			/* Must set the mode before device_attach of the host */
2414
+			usb3_set_mode(usb3, true);
2415
+			/* This device_attach() might sleep */
2416
+			if (device_attach(host) < 0)
2417
+				dev_err(dev, "device_attach(host) failed\n");
2418
+		}
2419
+		break;
2420
+	default:
2421
+		break;
2422
+	}
2423
+}
2424
+
2425
+static void handle_role_switch_states(struct device *dev,
2426
+					    enum usb_role role)
2427
+{
2428
+	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2429
+	struct device *host = usb3->host_dev;
2430
+	enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
2431
+
23562432 	if (cur_role == USB_ROLE_HOST && role == USB_ROLE_DEVICE) {
23572433 		device_release_driver(host);
23582434 		usb3_set_mode(usb3, false);
....@@ -2363,7 +2439,21 @@
23632439 		if (device_attach(host) < 0)
23642440 			dev_err(dev, "device_attach(host) failed\n");
23652441 	}
2366
-	pm_runtime_put(dev);
2442
+}
2443
+
2444
+static int renesas_usb3_role_switch_set(struct usb_role_switch *sw,
2445
+					enum usb_role role)
2446
+{
2447
+	struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
2448
+
2449
+	pm_runtime_get_sync(usb3_to_dev(usb3));
2450
+
2451
+	if (usb3->role_sw_by_connector)
2452
+		handle_ext_role_switch_states(usb3_to_dev(usb3), role);
2453
+	else
2454
+		handle_role_switch_states(usb3_to_dev(usb3), role);
2455
+
2456
+	pm_runtime_put(usb3_to_dev(usb3));
23672457 
23682458 	return 0;
23692459 }
....@@ -2464,7 +2554,7 @@
24642554 static void renesas_usb3_debugfs_init(struct renesas_usb3 *usb3,
24652555 				      struct device *dev)
24662556 {
2467
-	usb3->dentry = debugfs_create_dir(dev_name(dev), NULL);
2557
+	usb3->dentry = debugfs_create_dir(dev_name(dev), usb_debug_root);
24682558 
24692559 	debugfs_create_file("b_device", 0644, usb3->dentry, usb3,
24702560 			    &renesas_usb3_b_device_fops);
....@@ -2610,12 +2700,24 @@
26102700 	.ramsize_per_pipe = SZ_4K,
26112701 };
26122702 
2703
+static const struct renesas_usb3_priv renesas_usb3_priv_r8a77990 = {
2704
+	.ramsize_per_ramif = SZ_16K,
2705
+	.num_ramif = 4,
2706
+	.ramsize_per_pipe = SZ_4K,
2707
+	.workaround_for_vbus = true,
2708
+};
2709
+
26132710 static const struct of_device_id usb3_of_match[] = {
26142711 	{
2712
+		.compatible = "renesas,r8a774c0-usb3-peri",
2713
+		.data = &renesas_usb3_priv_r8a77990,
2714
+	}, {
26152715 		.compatible = "renesas,r8a7795-usb3-peri",
26162716 		.data = &renesas_usb3_priv_gen3,
2617
-	},
2618
-	{
2717
+	}, {
2718
+		.compatible = "renesas,r8a77990-usb3-peri",
2719
+		.data = &renesas_usb3_priv_r8a77990,
2720
+	}, {
26192721 		.compatible = "renesas,rcar-gen3-usb3-peri",
26202722 		.data = &renesas_usb3_priv_gen3,
26212723 	},
....@@ -2637,7 +2739,7 @@
26372739 	EXTCON_NONE,
26382740 };
26392741 
2640
-static const struct usb_role_switch_desc renesas_usb3_role_switch_desc = {
2742
+static struct usb_role_switch_desc renesas_usb3_role_switch_desc = {
26412743 	.set = renesas_usb3_role_switch_set,
26422744 	.get = renesas_usb3_role_switch_get,
26432745 	.allow_userspace_control = true,
....@@ -2646,7 +2748,6 @@
26462748 static int renesas_usb3_probe(struct platform_device *pdev)
26472749 {
26482750 	struct renesas_usb3 *usb3;
2649
-	struct resource *res;
26502751 	int irq, ret;
26512752 	const struct renesas_usb3_priv *priv;
26522753 	const struct soc_device_attribute *attr;
....@@ -2658,17 +2759,14 @@
26582759 		priv = of_device_get_match_data(&pdev->dev);
26592760 
26602761 	irq = platform_get_irq(pdev, 0);
2661
-	if (irq < 0) {
2662
-		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
2762
+	if (irq < 0)
26632763 		return irq;
2664
-	}
26652764 
26662765 	usb3 = devm_kzalloc(&pdev->dev, sizeof(*usb3), GFP_KERNEL);
26672766 	if (!usb3)
26682767 		return -ENOMEM;
26692768 
2670
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2671
-	usb3->reg = devm_ioremap_resource(&pdev->dev, res);
2769
+	usb3->reg = devm_platform_ioremap_resource(pdev, 0);
26722770 	if (IS_ERR(usb3->reg))
26732771 		return PTR_ERR(usb3->reg);
26742772 
....@@ -2727,6 +2825,13 @@
27272825 	ret = device_create_file(&pdev->dev, &dev_attr_role);
27282826 	if (ret < 0)
27292827 		goto err_dev_create;
2828
+
2829
+	if (device_property_read_bool(&pdev->dev, "usb-role-switch")) {
2830
+		usb3->role_sw_by_connector = true;
2831
+		renesas_usb3_role_switch_desc.fwnode = dev_fwnode(&pdev->dev);
2832
+	}
2833
+
2834
+	renesas_usb3_role_switch_desc.driver_data = usb3;
27302835 
27312836 	INIT_WORK(&usb3->role_work, renesas_usb3_role_work);
27322837 	usb3->role_sw = usb_role_switch_register(&pdev->dev,
....@@ -2803,7 +2908,7 @@
28032908 	.probe		= renesas_usb3_probe,
28042909 	.remove		= renesas_usb3_remove,
28052910 	.driver		= {
2806
-		.name =	(char *)udc_name,
2911
+		.name =	udc_name,
28072912 		.pm		= &renesas_usb3_pm_ops,
28082913 		.of_match_table = of_match_ptr(usb3_of_match),
28092914 	},