1 // SPDX-License-Identifier: GPL-2.0
24 #include "isp1760-core.h"
25 #include "isp1760-hcd.h"
26 #include "isp1760-regs.h"
27 #include "isp1760-udc.h"
31 	struct isp1760_hcd *hcd = &isp->hcd;  in isp1760_init_core()
32 	struct isp1760_udc *udc = &isp->udc;  in isp1760_init_core()
35 	/* Low-level chip reset */  in isp1760_init_core()
36 	if (isp->rst_gpio) {  in isp1760_init_core()
37 		gpiod_set_value_cansleep(isp->rst_gpio, 1);  in isp1760_init_core()
39 		gpiod_set_value_cansleep(isp->rst_gpio, 0);  in isp1760_init_core()
46 	isp1760_field_set(hcd->fields, SW_RESET_RESET_ALL);  in isp1760_init_core()
49 	/* Setup HW Mode Control: This assumes a level active-low interrupt */  in isp1760_init_core()
50 	if ((isp->devflags & ISP1760_FLAG_ANALOG_OC) && hcd->is_isp1763) {  in isp1760_init_core()
51 		dev_err(isp->dev, "isp1763 analog overcurrent not available\n");  in isp1760_init_core()
52 		return -EINVAL;  in isp1760_init_core()
55 	if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_16)  in isp1760_init_core()
56 		isp1760_field_clear(hcd->fields, HW_DATA_BUS_WIDTH);  in isp1760_init_core()
57 	if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_8)  in isp1760_init_core()
58 		isp1760_field_set(hcd->fields, HW_DATA_BUS_WIDTH);  in isp1760_init_core()
59 	if (isp->devflags & ISP1760_FLAG_ANALOG_OC)  in isp1760_init_core()
60 		isp1760_field_set(hcd->fields, HW_ANA_DIGI_OC);  in isp1760_init_core()
61 	if (isp->devflags & ISP1760_FLAG_DACK_POL_HIGH)  in isp1760_init_core()
62 		isp1760_field_set(hcd->fields, HW_DACK_POL_HIGH);  in isp1760_init_core()
63 	if (isp->devflags & ISP1760_FLAG_DREQ_POL_HIGH)  in isp1760_init_core()
64 		isp1760_field_set(hcd->fields, HW_DREQ_POL_HIGH);  in isp1760_init_core()
65 	if (isp->devflags & ISP1760_FLAG_INTR_POL_HIGH)  in isp1760_init_core()
66 		isp1760_field_set(hcd->fields, HW_INTR_HIGH_ACT);  in isp1760_init_core()
67 	if (isp->devflags & ISP1760_FLAG_INTR_EDGE_TRIG)  in isp1760_init_core()
68 		isp1760_field_set(hcd->fields, HW_INTR_EDGE_TRIG);  in isp1760_init_core()
74 	 * spurious interrupts during HCD registration.  in isp1760_init_core()
76 	if (isp->devflags & ISP1760_FLAG_ISP1761) {  in isp1760_init_core()
77 		isp1760_reg_write(udc->regs, ISP176x_DC_MODE, 0);  in isp1760_init_core()
78 		isp1760_field_set(hcd->fields, HW_COMN_IRQ);  in isp1760_init_core()
87 	if (isp->devflags & ISP1760_FLAG_ISP1761) {  in isp1760_init_core()
88 		if (isp->devflags & ISP1760_FLAG_PERIPHERAL_EN) {  in isp1760_init_core()
97 		isp1760_reg_write(hcd->regs, ISP176x_HC_OTG_CTRL, otg_ctrl);  in isp1760_init_core()
100 	dev_info(isp->dev, "%s bus width: %u, oc: %s\n",  in isp1760_init_core()
101 		 hcd->is_isp1763 ? "isp1763" : "isp1760",  in isp1760_init_core()
102 		 isp->devflags & ISP1760_FLAG_BUS_WIDTH_8 ? 8 :  in isp1760_init_core()
103 		 isp->devflags & ISP1760_FLAG_BUS_WIDTH_16 ? 16 : 32,  in isp1760_init_core()
104 		 hcd->is_isp1763 ? "not available" :  in isp1760_init_core()
105 		 isp->devflags & ISP1760_FLAG_ANALOG_OC ? "analog" : "digital");  in isp1760_init_core()
112 	struct isp1760_udc *udc = &isp->udc;  in isp1760_set_pullup()
115 		isp1760_field_set(udc->fields, HW_DP_PULLUP);  in isp1760_set_pullup()
117 		isp1760_field_set(udc->fields, HW_DP_PULLUP_CLEAR);  in isp1760_set_pullup()
124  * - 32 blocks @ 256  bytes
125  * - 20 blocks @ 1024 bytes
126  * -  4 blocks @ 8192 bytes
145  * - 8 blocks @ 256  bytes
146  * - 2 blocks @ 1024 bytes
147  * - 4 blocks @ 4096 bytes
174 	.name = "isp1760-hc",
342 	.name = "isp1763-hc",
362 	.name = "isp1761-dc",
472 	.name = "isp1763-dc",
505 		return -ENODEV;  in isp1760_register()
509 		return -ENOMEM;  in isp1760_register()
511 	isp->dev = dev;  in isp1760_register()
512 	isp->devflags = devflags;  in isp1760_register()
513 	hcd = &isp->hcd;  in isp1760_register()
514 	udc = &isp->udc;  in isp1760_register()
516 	hcd->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763);  in isp1760_register()
517 	udc->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763);  in isp1760_register()
519 	if (!hcd->is_isp1763 && (devflags & ISP1760_FLAG_BUS_WIDTH_8)) {  in isp1760_register()
521 		return -EINVAL;  in isp1760_register()
524 	if (hcd->is_isp1763) {  in isp1760_register()
536 	isp->rst_gpio = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH);  in isp1760_register()
537 	if (IS_ERR(isp->rst_gpio))  in isp1760_register()
538 		return PTR_ERR(isp->rst_gpio);  in isp1760_register()
540 	hcd->base = devm_ioremap_resource(dev, mem);  in isp1760_register()
541 	if (IS_ERR(hcd->base))  in isp1760_register()
542 		return PTR_ERR(hcd->base);  in isp1760_register()
544 	hcd->regs = devm_regmap_init_mmio(dev, hcd->base, hc_regmap);  in isp1760_register()
545 	if (IS_ERR(hcd->regs))  in isp1760_register()
546 		return PTR_ERR(hcd->regs);  in isp1760_register()
549 		f = devm_regmap_field_alloc(dev, hcd->regs, hc_reg_fields[i]);  in isp1760_register()
553 		hcd->fields[i] = f;  in isp1760_register()
556 	udc->regs = devm_regmap_init_mmio(dev, hcd->base, dc_regmap);  in isp1760_register()
557 	if (IS_ERR(udc->regs))  in isp1760_register()
558 		return PTR_ERR(udc->regs);  in isp1760_register()
561 		f = devm_regmap_field_alloc(dev, udc->regs, dc_reg_fields[i]);  in isp1760_register()
565 		udc->fields[i] = f;  in isp1760_register()
568 	if (hcd->is_isp1763)  in isp1760_register()
569 		hcd->memory_layout = &isp1763_memory_conf;  in isp1760_register()
571 		hcd->memory_layout = &isp176x_memory_conf;  in isp1760_register()
602 	isp1760_hcd_unregister(&isp->hcd);  in isp1760_unregister()
605 MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP");