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"
29 static int isp1760_init_core(struct isp1760_device *isp)  in isp1760_init_core()  argument
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()
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()
107 	return 0;  in isp1760_init_core()
110 void isp1760_set_pullup(struct isp1760_device *isp, bool enable)  in isp1760_set_pullup()  argument
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
129 	.blocks[0]		= 32,
130 	.blocks_size[0]		= 256,
138 	.payload_area_size	= 0xf000,
145  * - 8 blocks @ 256  bytes
146  * - 2 blocks @ 1024 bytes
147  * - 4 blocks @ 4096 bytes
150 	.blocks[0]		= 8,
151 	.blocks_size[0]		= 256,
159 	.payload_area_size	= 0x5000,
174 	.name = "isp1760-hc",
185 	[HCS_N_PORTS]		= REG_FIELD(ISP176x_HC_HCSPARAMS, 0, 3),
190 	[CMD_RUN]		= REG_FIELD(ISP176x_HC_USBCMD, 0, 0),
192 	[HC_FRINDEX]		= REG_FIELD(ISP176x_HC_FRINDEX, 0, 13),
193 	[FLAG_CF]		= REG_FIELD(ISP176x_HC_CONFIGFLAG, 0, 0),
194 	[HC_ISO_PTD_DONEMAP]	= REG_FIELD(ISP176x_HC_ISO_PTD_DONEMAP, 0, 31),
195 	[HC_ISO_PTD_SKIPMAP]	= REG_FIELD(ISP176x_HC_ISO_PTD_SKIPMAP, 0, 31),
196 	[HC_ISO_PTD_LASTPTD]	= REG_FIELD(ISP176x_HC_ISO_PTD_LASTPTD, 0, 31),
197 	[HC_INT_PTD_DONEMAP]	= REG_FIELD(ISP176x_HC_INT_PTD_DONEMAP, 0, 31),
198 	[HC_INT_PTD_SKIPMAP]	= REG_FIELD(ISP176x_HC_INT_PTD_SKIPMAP, 0, 31),
199 	[HC_INT_PTD_LASTPTD]	= REG_FIELD(ISP176x_HC_INT_PTD_LASTPTD, 0, 31),
200 	[HC_ATL_PTD_DONEMAP]	= REG_FIELD(ISP176x_HC_ATL_PTD_DONEMAP, 0, 31),
201 	[HC_ATL_PTD_SKIPMAP]	= REG_FIELD(ISP176x_HC_ATL_PTD_SKIPMAP, 0, 31),
202 	[HC_ATL_PTD_LASTPTD]	= REG_FIELD(ISP176x_HC_ATL_PTD_LASTPTD, 0, 31),
211 	[PORT_CONNECT]		= REG_FIELD(ISP176x_HC_PORTSC1, 0, 0),
220 	[HW_GLOBAL_INTR_EN]	= REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 0, 0),
223 	[HC_CHIP_ID_LOW]	= REG_FIELD(ISP176x_HC_CHIP_ID, 0, 7),
224 	[HC_SCRATCH]		= REG_FIELD(ISP176x_HC_SCRATCH, 0, 31),
225 	[SW_RESET_RESET_ALL]	= REG_FIELD(ISP176x_HC_RESET, 0, 0),
228 	[ATL_BUF_FILL]		= REG_FIELD(ISP176x_HC_BUFFER_STATUS, 0, 0),
230 	[MEM_START_ADDR]	= REG_FIELD(ISP176x_HC_MEMORY, 0, 15),
231 	[HC_INTERRUPT]		= REG_FIELD(ISP176x_HC_INTERRUPT, 0, 9),
234 	[HC_ISO_IRQ_MASK_OR]	= REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_OR, 0, 31),
235 	[HC_INT_IRQ_MASK_OR]	= REG_FIELD(ISP176x_HC_INT_IRQ_MASK_OR, 0, 31),
236 	[HC_ATL_IRQ_MASK_OR]	= REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_OR, 0, 31),
237 	[HC_ISO_IRQ_MASK_AND]	= REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_AND, 0, 31),
238 	[HC_INT_IRQ_MASK_AND]	= REG_FIELD(ISP176x_HC_INT_IRQ_MASK_AND, 0, 31),
239 	[HC_ATL_IRQ_MASK_AND]	= REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_AND, 0, 31),
253 	[HW_DP_PULLUP]		= REG_FIELD(ISP176x_HC_OTG_CTRL, 0, 0),
261 	[CMD_RUN]		= REG_FIELD(ISP1763_HC_USBCMD, 0, 0),
263 	[HC_FRINDEX]		= REG_FIELD(ISP1763_HC_FRINDEX, 0, 13),
264 	[FLAG_CF]		= REG_FIELD(ISP1763_HC_CONFIGFLAG, 0, 0),
265 	[HC_ISO_PTD_DONEMAP]	= REG_FIELD(ISP1763_HC_ISO_PTD_DONEMAP, 0, 15),
266 	[HC_ISO_PTD_SKIPMAP]	= REG_FIELD(ISP1763_HC_ISO_PTD_SKIPMAP, 0, 15),
267 	[HC_ISO_PTD_LASTPTD]	= REG_FIELD(ISP1763_HC_ISO_PTD_LASTPTD, 0, 15),
268 	[HC_INT_PTD_DONEMAP]	= REG_FIELD(ISP1763_HC_INT_PTD_DONEMAP, 0, 15),
269 	[HC_INT_PTD_SKIPMAP]	= REG_FIELD(ISP1763_HC_INT_PTD_SKIPMAP, 0, 15),
270 	[HC_INT_PTD_LASTPTD]	= REG_FIELD(ISP1763_HC_INT_PTD_LASTPTD, 0, 15),
271 	[HC_ATL_PTD_DONEMAP]	= REG_FIELD(ISP1763_HC_ATL_PTD_DONEMAP, 0, 15),
272 	[HC_ATL_PTD_SKIPMAP]	= REG_FIELD(ISP1763_HC_ATL_PTD_SKIPMAP, 0, 15),
273 	[HC_ATL_PTD_LASTPTD]	= REG_FIELD(ISP1763_HC_ATL_PTD_LASTPTD, 0, 15),
282 	[PORT_CONNECT]		= REG_FIELD(ISP1763_HC_PORTSC1, 0, 0),
289 	[HW_GLOBAL_INTR_EN]	= REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 0, 0),
291 	[SW_RESET_RESET_ALL]	= REG_FIELD(ISP1763_HC_RESET, 0, 0),
292 	[HC_CHIP_ID_HIGH]	= REG_FIELD(ISP1763_HC_CHIP_ID, 0, 15),
294 	[HC_CHIP_REV]		= REG_FIELD(ISP1763_HC_CHIP_REV, 0, 7),
295 	[HC_SCRATCH]		= REG_FIELD(ISP1763_HC_SCRATCH, 0, 15),
298 	[ATL_BUF_FILL]		= REG_FIELD(ISP1763_HC_BUFFER_STATUS, 0, 0),
299 	[MEM_START_ADDR]	= REG_FIELD(ISP1763_HC_MEMORY, 0, 15),
300 	[HC_DATA]		= REG_FIELD(ISP1763_HC_DATA, 0, 15),
301 	[HC_INTERRUPT]		= REG_FIELD(ISP1763_HC_INTERRUPT, 0, 10),
304 	[HC_ISO_IRQ_MASK_OR]	= REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_OR, 0, 15),
305 	[HC_INT_IRQ_MASK_OR]	= REG_FIELD(ISP1763_HC_INT_IRQ_MASK_OR, 0, 15),
306 	[HC_ATL_IRQ_MASK_OR]	= REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_OR, 0, 15),
307 	[HC_ISO_IRQ_MASK_AND]	= REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_AND, 0, 15),
308 	[HC_INT_IRQ_MASK_AND]	= REG_FIELD(ISP1763_HC_INT_IRQ_MASK_AND, 0, 15),
309 	[HC_ATL_IRQ_MASK_AND]	= REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_AND, 0, 15),
317 	[HW_DP_PULLUP]		= REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 0, 0),
325 	[HW_DP_PULLUP_CLEAR]	= REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 0, 0),
342 	.name = "isp1763-hc",
362 	.name = "isp1761-dc",
373 	[DC_DEVADDR]		= REG_FIELD(ISP176x_DC_ADDRESS, 0, 6),
380 	[DC_INTPOL]		= REG_FIELD(ISP176x_DC_INTCONF, 0, 0),
394 	[DC_IEBRST]		= REG_FIELD(ISP176x_DC_INTENABLE, 0, 0),
397 	[DC_EPDIR]		= REG_FIELD(ISP176x_DC_EPINDEX, 0, 0),
402 	[DC_STALL]		= REG_FIELD(ISP176x_DC_CTRLFUNC, 0, 0),
403 	[DC_BUFLEN]		= REG_FIELD(ISP176x_DC_BUFLEN, 0, 15),
404 	[DC_FFOSZ]		= REG_FIELD(ISP176x_DC_EPMAXPKTSZ, 0, 10),
406 	[DC_ENDPTYP]		= REG_FIELD(ISP176x_DC_EPTYPE, 0, 1),
408 	[DC_FRAMENUM]		= REG_FIELD(ISP176x_DC_FRAMENUM, 0, 10),
410 	[DC_CHIP_ID_LOW]	= REG_FIELD(ISP176x_DC_CHIPID, 0, 15),
411 	[DC_SCRATCH]		= REG_FIELD(ISP176x_DC_SCRATCH, 0, 15),
428 	[DC_DEVADDR]		= REG_FIELD(ISP1763_DC_ADDRESS, 0, 6),
435 	[DC_INTPOL]		= REG_FIELD(ISP1763_DC_INTCONF, 0, 0),
449 	[DC_IEBRST]		= REG_FIELD(ISP1763_DC_INTENABLE, 0, 0),
452 	[DC_EPDIR]		= REG_FIELD(ISP1763_DC_EPINDEX, 0, 0),
457 	[DC_STALL]		= REG_FIELD(ISP1763_DC_CTRLFUNC, 0, 0),
458 	[DC_BUFLEN]		= REG_FIELD(ISP1763_DC_BUFLEN, 0, 15),
459 	[DC_FFOSZ]		= REG_FIELD(ISP1763_DC_EPMAXPKTSZ, 0, 10),
461 	[DC_ENDPTYP]		= REG_FIELD(ISP1763_DC_EPTYPE, 0, 1),
463 	[DC_FRAMENUM]		= REG_FIELD(ISP1763_DC_FRAMENUM, 0, 10),
464 	[DC_CHIP_ID_HIGH]	= REG_FIELD(ISP1763_DC_CHIPID_HIGH, 0, 15),
465 	[DC_CHIP_ID_LOW]	= REG_FIELD(ISP1763_DC_CHIPID_LOW, 0, 15),
466 	[DC_SCRATCH]		= REG_FIELD(ISP1763_DC_SCRATCH, 0, 15),
472 	.name = "isp1763-dc",
488 	struct isp1760_device *isp;  in isp1760_register()  local
505 		return -ENODEV;  in isp1760_register()
507 	isp = devm_kzalloc(dev, sizeof(*isp), GFP_KERNEL);  in isp1760_register()
508 	if (!isp)  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()
526 		hc_reg_fields = &isp1763_hc_reg_fields[0];  in isp1760_register()
528 		dc_reg_fields = &isp1763_dc_reg_fields[0];  in isp1760_register()
531 		hc_reg_fields = &isp1760_hc_reg_fields[0];  in isp1760_register()
533 		dc_reg_fields = &isp1761_dc_reg_fields[0];  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()
548 	for (i = 0; i < HC_FIELD_MAX; i++) {  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()
560 	for (i = 0; i < DC_FIELD_MAX; i++) {  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()
573 	ret = isp1760_init_core(isp);  in isp1760_register()
574 	if (ret < 0)  in isp1760_register()
580 		if (ret < 0)  in isp1760_register()
585 		ret = isp1760_udc_register(isp, irq, irqflags);  in isp1760_register()
586 		if (ret < 0) {  in isp1760_register()
592 	dev_set_drvdata(dev, isp);  in isp1760_register()
594 	return 0;  in isp1760_register()
599 	struct isp1760_device *isp = dev_get_drvdata(dev);  in isp1760_unregister()  local
601 	isp1760_udc_unregister(isp);  in isp1760_unregister()
602 	isp1760_hcd_unregister(&isp->hcd);  in isp1760_unregister()
605 MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP");