1 // SPDX-License-Identifier: GPL-2.0
3  * mtu3_dr.c - dual role switch and host glue layer
13 #include <linux/mfd/syscon.h>
50  * ip-sleep wakeup mode:
57 	switch (ssusb->uwk_vers) {  in ssusb_wakeup_ip_sleep_set()
59 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL1;  in ssusb_wakeup_ip_sleep_set()
64 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;  in ssusb_wakeup_ip_sleep_set()
69 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;  in ssusb_wakeup_ip_sleep_set()
74 		reg = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;  in ssusb_wakeup_ip_sleep_set()
81 	regmap_update_bits(ssusb->uwk, reg, msk, val);  in ssusb_wakeup_ip_sleep_set()
90 	/* wakeup function is optional */  in ssusb_wakeup_of_property_parse()
91 	ssusb->uwk_en = of_property_read_bool(dn, "wakeup-source");  in ssusb_wakeup_of_property_parse()
92 	if (!ssusb->uwk_en)  in ssusb_wakeup_of_property_parse()
96 				"mediatek,syscon-wakeup", 2, 0, &args);  in ssusb_wakeup_of_property_parse()
100 	ssusb->uwk_reg_base = args.args[0];  in ssusb_wakeup_of_property_parse()
101 	ssusb->uwk_vers = args.args[1];  in ssusb_wakeup_of_property_parse()
102 	ssusb->uwk = syscon_node_to_regmap(args.np);  in ssusb_wakeup_of_property_parse()
104 	dev_info(ssusb->dev, "uwk - reg:0x%x, version:%d\n",  in ssusb_wakeup_of_property_parse()
105 			ssusb->uwk_reg_base, ssusb->uwk_vers);  in ssusb_wakeup_of_property_parse()
107 	return PTR_ERR_OR_ZERO(ssusb->uwk);  in ssusb_wakeup_of_property_parse()
112 	if (ssusb->uwk_en)  in ssusb_wakeup_set()
120 	xhci_cap = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_XHCI_CAP);  in host_ports_num_get()
121 	ssusb->u2_ports = SSUSB_IP_XHCI_U2_PORT_NUM(xhci_cap);  in host_ports_num_get()
122 	ssusb->u3_ports = SSUSB_IP_XHCI_U3_PORT_NUM(xhci_cap);  in host_ports_num_get()
124 	dev_dbg(ssusb->dev, "host - u2_ports:%d, u3_ports:%d\n",  in host_ports_num_get()
125 		 ssusb->u2_ports, ssusb->u3_ports);  in host_ports_num_get()
131 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_enable()
132 	int num_u3p = ssusb->u3_ports;  in ssusb_host_enable()
133 	int num_u2p = ssusb->u2_ports;  in ssusb_host_enable()
145 		if ((0x1 << i) & ssusb->u3p_dis_msk) {  in ssusb_host_enable()
158 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_enable()
176 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_disable()
177 	int num_u3p = ssusb->u3_ports;  in ssusb_host_disable()
178 	int num_u2p = ssusb->u2_ports;  in ssusb_host_disable()
184 		if ((0x1 << i) & ssusb->u3p_dis_msk)  in ssusb_host_disable()
194 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_disable()
210 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_resume()
211 	int u3p_skip_msk = ssusb->u3p_dis_msk;  in ssusb_host_resume()
212 	int u2p_skip_msk = ssusb->u2p_dis_msk;  in ssusb_host_resume()
213 	int num_u3p = ssusb->u3_ports;  in ssusb_host_resume()
214 	int num_u2p = ssusb->u2_ports;  in ssusb_host_resume()
220 		if (ssusb->otg_switch.is_u3_drd)  in ssusb_host_resume()
253 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_suspend()
254 	int num_u3p = ssusb->u3_ports;  in ssusb_host_suspend()
255 	int num_u2p = ssusb->u2_ports;  in ssusb_host_suspend()
261 		if ((0x1 << i) & ssusb->u3p_dis_msk)  in ssusb_host_suspend()
271 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_suspend()
296 	/* if port0 supports dual-role, works as host mode by default */  in ssusb_host_setup()
297 	ssusb_set_vbus(&ssusb->otg_switch, 1);  in ssusb_host_setup()
302 	if (ssusb->is_host)  in ssusb_host_cleanup()
303 		ssusb_set_vbus(&ssusb->otg_switch, 0);  in ssusb_host_cleanup()
316 	struct device *parent_dev = ssusb->dev;  in ssusb_host_init()
335 	of_platform_depopulate(ssusb->dev);  in ssusb_host_exit()