1 // SPDX-License-Identifier: GPL-2.0
3  *  phy-rtk-usb2.c RTK usb2.0 PHY driver
15 #include <linux/nvmem-consumer.h>
128 	return (int)((((addr) - PAGE_START) & 0x7) +  in page_addr_to_array_index()
129 		((((addr) - PAGE_START) & 0x10) >> 1));  in page_addr_to_array_index()
150 		return -ETIMEDOUT;  in utmi_wait_register()
158 	void __iomem *reg_gusb2phyacc0 = phy_reg->reg_gusb2phyacc0;  in rtk_phy_read()
162 	addr -= OFFEST_PHY_READ;  in rtk_phy_read()
191 	void __iomem *reg_wrap_vstatus = phy_reg->reg_wrap_vstatus;  in rtk_phy_write()
192 	void __iomem *reg_gusb2phyacc0 = phy_reg->reg_gusb2phyacc0;  in rtk_phy_write()
193 	int shift_bits = phy_reg->vstatus_index * 8;  in rtk_phy_write()
235 	return -EINVAL;  in rtk_phy_set_page()
243 	s32 dc_disconnect_mask = phy_cfg->dc_disconnect_mask;  in __updated_dc_disconnect_level_page0_0xe4()
247 		     + phy_parameter->efuse_usb_dc_dis  in __updated_dc_disconnect_level_page0_0xe4()
248 		     + phy_parameter->disconnection_compensate;  in __updated_dc_disconnect_level_page0_0xe4()
274 	phy_cfg = rtk_phy->phy_cfg;  in update_dc_disconnect_level_at_page0()
275 	phy_reg = &phy_parameter->phy_reg;  in update_dc_disconnect_level_at_page0()
278 	phy_data_page = phy_cfg->page0;  in update_dc_disconnect_level_at_page0()
283 	if (!phy_data->addr) {  in update_dc_disconnect_level_at_page0()
284 		phy_data->addr = PAGE0_0XE4;  in update_dc_disconnect_level_at_page0()
285 		phy_data->data = rtk_phy_read(phy_reg, PAGE0_0XE4);  in update_dc_disconnect_level_at_page0()
288 	addr = phy_data->addr;  in update_dc_disconnect_level_at_page0()
289 	data = phy_data->data;  in update_dc_disconnect_level_at_page0()
290 	dc_disconnect_mask = phy_cfg->dc_disconnect_mask;  in update_dc_disconnect_level_at_page0()
299 		dev_err(rtk_phy->dev,  in update_dc_disconnect_level_at_page0()
309 	s32 dc_disconnect_mask = phy_cfg->dc_disconnect_mask;  in __updated_dc_disconnect_level_page1_0xe2()
311 	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {  in __updated_dc_disconnect_level_page1_0xe2()
313 			    + phy_parameter->efuse_usb_dc_dis  in __updated_dc_disconnect_level_page1_0xe2()
314 			    + phy_parameter->disconnection_compensate;  in __updated_dc_disconnect_level_page1_0xe2()
316 		if (phy_parameter->efuse_usb_dc_dis)  in __updated_dc_disconnect_level_page1_0xe2()
317 			val = (s32)(phy_parameter->efuse_usb_dc_dis +  in __updated_dc_disconnect_level_page1_0xe2()
318 				    phy_parameter->disconnection_compensate);  in __updated_dc_disconnect_level_page1_0xe2()
321 				    phy_parameter->disconnection_compensate);  in __updated_dc_disconnect_level_page1_0xe2()
346 	phy_cfg = rtk_phy->phy_cfg;  in update_dc_disconnect_level_at_page1()
347 	phy_reg = &phy_parameter->phy_reg;  in update_dc_disconnect_level_at_page1()
350 	phy_data_page = phy_cfg->page1;  in update_dc_disconnect_level_at_page1()
355 	if (!phy_data->addr) {  in update_dc_disconnect_level_at_page1()
356 		phy_data->addr = PAGE1_0XE2;  in update_dc_disconnect_level_at_page1()
357 		phy_data->data = rtk_phy_read(phy_reg, PAGE1_0XE2);  in update_dc_disconnect_level_at_page1()
360 	addr = phy_data->addr;  in update_dc_disconnect_level_at_page1()
361 	data = phy_data->data;  in update_dc_disconnect_level_at_page1()
362 	dc_disconnect_mask = phy_cfg->dc_disconnect_mask;  in update_dc_disconnect_level_at_page1()
370 		dev_err(rtk_phy->dev,  in update_dc_disconnect_level_at_page1()
378 	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;  in update_dc_disconnect_level()
380 	if (phy_cfg->usb_dc_disconnect_at_page0)  in update_dc_disconnect_level()
389 	s32 driving_level_compensate = phy_parameter->driving_level_compensate;  in __update_dc_driving_page0_0xe4()
390 	s32 dc_driving_mask = phy_cfg->dc_driving_mask;  in __update_dc_driving_page0_0xe4()
394 	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {  in __update_dc_driving_page0_0xe4()
396 			    + phy_parameter->efuse_usb_dc_cal;  in __update_dc_driving_page0_0xe4()
398 		if (phy_parameter->efuse_usb_dc_cal)  in __update_dc_driving_page0_0xe4()
399 			val = (s32)((phy_parameter->efuse_usb_dc_cal & dc_driving_mask)  in __update_dc_driving_page0_0xe4()
421 	phy_reg = &phy_parameter->phy_reg;  in update_dc_driving_level()
422 	phy_cfg = rtk_phy->phy_cfg;  in update_dc_driving_level()
423 	if (!phy_cfg->page0[4].addr) {  in update_dc_driving_level()
425 		phy_cfg->page0[4].addr = PAGE0_0XE4;  in update_dc_driving_level()
426 		phy_cfg->page0[4].data = rtk_phy_read(phy_reg, PAGE0_0XE4);  in update_dc_driving_level()
429 	if (phy_parameter->driving_level != DEFAULT_DC_DRIVING_VALUE) {  in update_dc_driving_level()
434 		data = phy_cfg->page0[4].data;  in update_dc_driving_level()
435 		dc_driving_mask = phy_cfg->dc_driving_mask;  in update_dc_driving_level()
438 		dev_dbg(rtk_phy->dev, "%s driving_level=%d => dts driving_level=%d\n",  in update_dc_driving_level()
439 			__func__, driving_level, phy_parameter->driving_level);  in update_dc_driving_level()
441 		phy_cfg->page0[4].data = (data & (~dc_driving_mask)) |  in update_dc_driving_level()
442 			    (phy_parameter->driving_level & dc_driving_mask);  in update_dc_driving_level()
445 	phy_cfg->page0[4].data = __update_dc_driving_page0_0xe4(phy_cfg,  in update_dc_driving_level()
447 								phy_cfg->page0[4].data);  in update_dc_driving_level()
456 	phy_cfg = rtk_phy->phy_cfg;  in update_hs_clk_select()
457 	phy_reg = &phy_parameter->phy_reg;  in update_hs_clk_select()
459 	if (phy_parameter->inverse_hstx_sync_clock) {  in update_hs_clk_select()
460 		if (!phy_cfg->page0[6].addr) {  in update_hs_clk_select()
462 			phy_cfg->page0[6].addr = PAGE0_0XE6;  in update_hs_clk_select()
463 			phy_cfg->page0[6].data = rtk_phy_read(phy_reg, PAGE0_0XE6);  in update_hs_clk_select()
466 		phy_cfg->page0[6].data = phy_cfg->page0[6].data | HS_CLK_SELECT;  in update_hs_clk_select()
480 	phy_cfg = rtk_phy->phy_cfg;  in do_rtk_phy_toggle()
481 	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];  in do_rtk_phy_toggle()
482 	phy_reg = &phy_parameter->phy_reg;  in do_rtk_phy_toggle()
484 	if (!phy_cfg->do_toggle)  in do_rtk_phy_toggle()
487 	if (phy_cfg->is_double_sensitivity_mode)  in do_rtk_phy_toggle()
503 	if (!phy_cfg->do_toggle_driving)  in do_rtk_phy_toggle()
509 	phy_data_page = phy_cfg->page0;  in do_rtk_phy_toggle()
522 			    phy_cfg->driving_updated_for_dev_dis;  in do_rtk_phy_toggle()
523 		s32 dc_driving_mask = phy_cfg->dc_driving_mask;  in do_rtk_phy_toggle()
568 	phy_cfg = rtk_phy->phy_cfg;  in do_rtk_phy_init()
569 	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];  in do_rtk_phy_init()
570 	phy_reg = &phy_parameter->phy_reg;  in do_rtk_phy_init()
572 	if (phy_cfg->use_default_parameter) {  in do_rtk_phy_init()
573 		dev_dbg(rtk_phy->dev, "%s phy#%d use default parameter\n",  in do_rtk_phy_init()
579 	phy_data_page = phy_cfg->page0;  in do_rtk_phy_init()
582 	for (i = 0; i < phy_cfg->page0_size; i++) {  in do_rtk_phy_init()
584 		u8 addr = phy_data->addr;  in do_rtk_phy_init()
585 		u8 data = phy_data->data;  in do_rtk_phy_init()
591 			dev_err(rtk_phy->dev,  in do_rtk_phy_init()
594 			return -EINVAL;  in do_rtk_phy_init()
599 	phy_data_page = phy_cfg->page1;  in do_rtk_phy_init()
602 	for (i = 0; i < phy_cfg->page1_size; i++) {  in do_rtk_phy_init()
604 		u8 addr = phy_data->addr;  in do_rtk_phy_init()
605 		u8 data = phy_data->data;  in do_rtk_phy_init()
611 			dev_err(rtk_phy->dev,  in do_rtk_phy_init()
614 			return -EINVAL;  in do_rtk_phy_init()
618 	if (phy_cfg->page2_size == 0)  in do_rtk_phy_init()
622 	phy_data_page = phy_cfg->page2;  in do_rtk_phy_init()
625 	for (i = 0; i < phy_cfg->page2_size; i++) {  in do_rtk_phy_init()
627 		u8 addr = phy_data->addr;  in do_rtk_phy_init()
628 		u8 data = phy_data->data;  in do_rtk_phy_init()
634 			dev_err(rtk_phy->dev,  in do_rtk_phy_init()
637 			return -EINVAL;  in do_rtk_phy_init()
654 		return -EINVAL;  in rtk_phy_init()
656 	for (i = 0; i < rtk_phy->num_phy; i++)  in rtk_phy_init()
659 	dev_dbg(rtk_phy->dev, "Initialized RTK USB 2.0 PHY (take %dms)\n",  in rtk_phy_init()
660 		jiffies_to_msecs(jiffies - phy_init_time));  in rtk_phy_init()
673 	if (index > rtk_phy->num_phy) {  in rtk_phy_toggle()
674 		dev_err(rtk_phy->dev, "%s: The port=%d is not in usb phy (num_phy=%d)\n",  in rtk_phy_toggle()
675 			__func__, index, rtk_phy->num_phy);  in rtk_phy_toggle()
686 	dev_dbg(rtk_phy->dev, "%s port=%d\n", __func__, port);  in rtk_phy_connect()
696 	dev_dbg(rtk_phy->dev, "%s port=%d\n", __func__, port);  in rtk_phy_disconnect()
724 	struct rtk_phy *rtk_phy = s->private;  in rtk_usb2_parameter_show()
728 	phy_cfg = rtk_phy->phy_cfg;  in rtk_usb2_parameter_show()
732 		   phy_cfg->check_efuse ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
734 		   phy_cfg->check_efuse_version);  in rtk_usb2_parameter_show()
736 		   phy_cfg->efuse_dc_driving_rate);  in rtk_usb2_parameter_show()
738 		   phy_cfg->dc_driving_mask);  in rtk_usb2_parameter_show()
740 		   phy_cfg->efuse_dc_disconnect_rate);  in rtk_usb2_parameter_show()
742 		   phy_cfg->dc_disconnect_mask);  in rtk_usb2_parameter_show()
744 		   phy_cfg->usb_dc_disconnect_at_page0 ? "true" : "false");  in rtk_usb2_parameter_show()
746 		   phy_cfg->do_toggle ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
748 		   phy_cfg->do_toggle_driving ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
750 		   phy_cfg->driving_updated_for_dev_dis);  in rtk_usb2_parameter_show()
752 		   phy_cfg->use_default_parameter ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
754 		   phy_cfg->is_double_sensitivity_mode ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
756 	for (index = 0; index < rtk_phy->num_phy; index++) {  in rtk_usb2_parameter_show()
761 		phy_parameter =  &((struct phy_parameter *)rtk_phy->phy_parameter)[index];  in rtk_usb2_parameter_show()
762 		phy_reg = &phy_parameter->phy_reg;  in rtk_usb2_parameter_show()
768 		phy_data_page = phy_cfg->page0;  in rtk_usb2_parameter_show()
771 		for (i = 0; i < phy_cfg->page0_size; i++) {  in rtk_usb2_parameter_show()
774 			u8 data = phy_data->data;  in rtk_usb2_parameter_show()
777 			if (phy_data->addr)  in rtk_usb2_parameter_show()
787 		phy_data_page = phy_cfg->page1;  in rtk_usb2_parameter_show()
790 		for (i = 0; i < phy_cfg->page1_size; i++) {  in rtk_usb2_parameter_show()
793 			u8 data = phy_data->data;  in rtk_usb2_parameter_show()
796 			if (phy_data->addr)  in rtk_usb2_parameter_show()
804 		if (phy_cfg->page2_size == 0)  in rtk_usb2_parameter_show()
809 		phy_data_page = phy_cfg->page2;  in rtk_usb2_parameter_show()
812 		for (i = 0; i < phy_cfg->page2_size; i++) {  in rtk_usb2_parameter_show()
815 			u8 data = phy_data->data;  in rtk_usb2_parameter_show()
818 			if (phy_data->addr)  in rtk_usb2_parameter_show()
829 			   (int)phy_parameter->efuse_usb_dc_cal);  in rtk_usb2_parameter_show()
831 			   (int)phy_parameter->efuse_usb_dc_dis);  in rtk_usb2_parameter_show()
833 			   phy_parameter->inverse_hstx_sync_clock ? "Enable" : "Disable");  in rtk_usb2_parameter_show()
835 			   phy_parameter->driving_level);  in rtk_usb2_parameter_show()
837 			   phy_parameter->driving_level_compensate);  in rtk_usb2_parameter_show()
839 			   phy_parameter->disconnection_compensate);  in rtk_usb2_parameter_show()
854 	rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev),  in create_debug_files()
857 	debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy,  in create_debug_files()
863 	debugfs_remove_recursive(rtk_phy->debug_dir);  in remove_debug_files()
873 	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;  in get_phy_data_by_efuse()
880 	if (!phy_cfg->check_efuse)  in get_phy_data_by_efuse()
884 	cell = nvmem_cell_get(rtk_phy->dev, "usb-dc-cal");  in get_phy_data_by_efuse()
886 		dev_dbg(rtk_phy->dev, "%s no usb-dc-cal: %ld\n",  in get_phy_data_by_efuse()
894 			value = buf[0] & phy_cfg->dc_driving_mask;  in get_phy_data_by_efuse()
900 	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {  in get_phy_data_by_efuse()
901 		int rate = phy_cfg->efuse_dc_driving_rate;  in get_phy_data_by_efuse()
904 			phy_parameter->efuse_usb_dc_cal = (int8_t)(value * rate);  in get_phy_data_by_efuse()
906 			phy_parameter->efuse_usb_dc_cal = -(int8_t)  in get_phy_data_by_efuse()
910 			dev_dbg(rtk_phy->dev, "For groot IC we need a workaround to adjust efuse_usb_dc_cal\n");  in get_phy_data_by_efuse()
914 				phy_parameter->efuse_usb_dc_cal = (int8_t)(value);  in get_phy_data_by_efuse()
918 				phy_parameter->efuse_usb_dc_cal = (int8_t)(value + 1);  in get_phy_data_by_efuse()
921 		phy_parameter->efuse_usb_dc_cal = value & phy_cfg->dc_driving_mask;  in get_phy_data_by_efuse()
926 	cell = nvmem_cell_get(rtk_phy->dev, "usb-dc-dis");  in get_phy_data_by_efuse()
928 		dev_dbg(rtk_phy->dev, "%s no usb-dc-dis: %ld\n",  in get_phy_data_by_efuse()
936 			value = buf[0] & phy_cfg->dc_disconnect_mask;  in get_phy_data_by_efuse()
942 	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {  in get_phy_data_by_efuse()
943 		int rate = phy_cfg->efuse_dc_disconnect_rate;  in get_phy_data_by_efuse()
946 			phy_parameter->efuse_usb_dc_dis = (int8_t)(value * rate);  in get_phy_data_by_efuse()
948 			phy_parameter->efuse_usb_dc_dis = -(int8_t)  in get_phy_data_by_efuse()
951 		phy_parameter->efuse_usb_dc_dis = value & phy_cfg->dc_disconnect_mask;  in get_phy_data_by_efuse()
960 	struct device *dev = rtk_phy->dev;  in parse_phy_data()
961 	struct device_node *np = dev->of_node;  in parse_phy_data()
966 	rtk_phy->phy_parameter = devm_kzalloc(dev, sizeof(struct phy_parameter) *  in parse_phy_data()
967 						rtk_phy->num_phy, GFP_KERNEL);  in parse_phy_data()
968 	if (!rtk_phy->phy_parameter)  in parse_phy_data()
969 		return -ENOMEM;  in parse_phy_data()
971 	for (index = 0; index < rtk_phy->num_phy; index++) {  in parse_phy_data()
972 		phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];  in parse_phy_data()
974 		phy_parameter->phy_reg.reg_wrap_vstatus = of_iomap(np, 0);  in parse_phy_data()
975 		phy_parameter->phy_reg.reg_gusb2phyacc0 = of_iomap(np, 1) + index;  in parse_phy_data()
976 		phy_parameter->phy_reg.vstatus_index = index;  in parse_phy_data()
978 		if (of_property_read_bool(np, "realtek,inverse-hstx-sync-clock"))  in parse_phy_data()
979 			phy_parameter->inverse_hstx_sync_clock = true;  in parse_phy_data()
981 			phy_parameter->inverse_hstx_sync_clock = false;  in parse_phy_data()
983 		if (of_property_read_u32_index(np, "realtek,driving-level",  in parse_phy_data()
984 					       index, &phy_parameter->driving_level))  in parse_phy_data()
985 			phy_parameter->driving_level = DEFAULT_DC_DRIVING_VALUE;  in parse_phy_data()
987 		if (of_property_read_u32_index(np, "realtek,driving-level-compensate",  in parse_phy_data()
988 					       index, &phy_parameter->driving_level_compensate))  in parse_phy_data()
989 			phy_parameter->driving_level_compensate = 0;  in parse_phy_data()
991 		if (of_property_read_u32_index(np, "realtek,disconnection-compensate",  in parse_phy_data()
992 					       index, &phy_parameter->disconnection_compensate))  in parse_phy_data()
993 			phy_parameter->disconnection_compensate = 0;  in parse_phy_data()
1008 	struct device *dev = &pdev->dev;  in rtk_usb2phy_probe()
1017 		return -EINVAL;  in rtk_usb2phy_probe()
1022 		return -ENOMEM;  in rtk_usb2phy_probe()
1024 	rtk_phy->dev			= &pdev->dev;  in rtk_usb2phy_probe()
1025 	rtk_phy->phy_cfg = devm_kzalloc(dev, sizeof(*phy_cfg), GFP_KERNEL);  in rtk_usb2phy_probe()
1027 	memcpy(rtk_phy->phy_cfg, phy_cfg, sizeof(*phy_cfg));  in rtk_usb2phy_probe()
1029 	rtk_phy->num_phy = phy_cfg->num_phy;  in rtk_usb2phy_probe()
1037 	generic_phy = devm_phy_create(rtk_phy->dev, NULL, &ops);  in rtk_usb2phy_probe()
1043 	phy_provider = devm_of_phy_provider_register(rtk_phy->dev,  in rtk_usb2phy_probe()
1286 	{ .compatible = "realtek,rtd1295-usb2phy", .data = &rtd1295_phy_cfg },
1287 	{ .compatible = "realtek,rtd1312c-usb2phy", .data = &rtd1312c_phy_cfg },
1288 	{ .compatible = "realtek,rtd1315e-usb2phy", .data = &rtd1315e_phy_cfg },
1289 	{ .compatible = "realtek,rtd1319-usb2phy", .data = &rtd1319_phy_cfg },
1290 	{ .compatible = "realtek,rtd1319d-usb2phy", .data = &rtd1319d_phy_cfg },
1291 	{ .compatible = "realtek,rtd1395-usb2phy", .data = &rtd1395_phy_cfg },
1292 	{ .compatible = "realtek,rtd1395-usb2phy-2port", .data = &rtd1395_phy_cfg_2port },
1293 	{ .compatible = "realtek,rtd1619-usb2phy", .data = &rtd1619_phy_cfg },
1294 	{ .compatible = "realtek,rtd1619b-usb2phy", .data = &rtd1619b_phy_cfg },
1303 		.name	= "rtk-usb2phy",