1 // SPDX-License-Identifier: GPL-2.0
3  * mtu3_dr.c - dual role switch and host glue layer
49  * ip-sleep wakeup mode:
50  * all clocks can be turn off, but power domain should be kept on
56 	switch (ssusb->uwk_vers) {  in ssusb_wakeup_ip_sleep_set()
58 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL1;  in ssusb_wakeup_ip_sleep_set()
63 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;  in ssusb_wakeup_ip_sleep_set()
68 		reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;  in ssusb_wakeup_ip_sleep_set()
73 		reg = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;  in ssusb_wakeup_ip_sleep_set()
80 	regmap_update_bits(ssusb->uwk, reg, msk, val);  in ssusb_wakeup_ip_sleep_set()
90 	ssusb->uwk_en = of_property_read_bool(dn, "wakeup-source");  in ssusb_wakeup_of_property_parse()
91 	if (!ssusb->uwk_en)  in ssusb_wakeup_of_property_parse()
95 				"mediatek,syscon-wakeup", 2, 0, &args);  in ssusb_wakeup_of_property_parse()
99 	ssusb->uwk_reg_base = args.args[0];  in ssusb_wakeup_of_property_parse()
100 	ssusb->uwk_vers = args.args[1];  in ssusb_wakeup_of_property_parse()
101 	ssusb->uwk = syscon_node_to_regmap(args.np);  in ssusb_wakeup_of_property_parse()
103 	dev_info(ssusb->dev, "uwk - reg:0x%x, version:%d\n",  in ssusb_wakeup_of_property_parse()
104 			ssusb->uwk_reg_base, ssusb->uwk_vers);  in ssusb_wakeup_of_property_parse()
106 	return PTR_ERR_OR_ZERO(ssusb->uwk);  in ssusb_wakeup_of_property_parse()
111 	if (ssusb->uwk_en)  in ssusb_wakeup_set()
119 	xhci_cap = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_XHCI_CAP);  in host_ports_num_get()
120 	ssusb->u2_ports = SSUSB_IP_XHCI_U2_PORT_NUM(xhci_cap);  in host_ports_num_get()
121 	ssusb->u3_ports = SSUSB_IP_XHCI_U3_PORT_NUM(xhci_cap);  in host_ports_num_get()
123 	dev_dbg(ssusb->dev, "host - u2_ports:%d, u3_ports:%d\n",  in host_ports_num_get()
124 		 ssusb->u2_ports, ssusb->u3_ports);  in host_ports_num_get()
130 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_enable()
131 	int num_u3p = ssusb->u3_ports;  in ssusb_host_enable()
132 	int num_u2p = ssusb->u2_ports;  in ssusb_host_enable()
138 	/* power on host ip */  in ssusb_host_enable()
141 	/* power on and enable u3 ports except skipped ones */  in ssusb_host_enable()
144 		if ((0x1 << i) & ssusb->u3p_dis_msk) {  in ssusb_host_enable()
155 	/* power on and enable all u2 ports */  in ssusb_host_enable()
157 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_enable()
175 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_disable()
176 	int num_u3p = ssusb->u3_ports;  in ssusb_host_disable()
177 	int num_u2p = ssusb->u2_ports;  in ssusb_host_disable()
181 	/* power down and disable u3 ports except skipped ones */  in ssusb_host_disable()
183 		if ((0x1 << i) & ssusb->u3p_dis_msk)  in ssusb_host_disable()
191 	/* power down and disable u2 ports except skipped ones */  in ssusb_host_disable()
193 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_disable()
201 	/* power down host ip */  in ssusb_host_disable()
209 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_resume()
210 	int u3p_skip_msk = ssusb->u3p_dis_msk;  in ssusb_host_resume()
211 	int u2p_skip_msk = ssusb->u2p_dis_msk;  in ssusb_host_resume()
212 	int num_u3p = ssusb->u3_ports;  in ssusb_host_resume()
213 	int num_u2p = ssusb->u2_ports;  in ssusb_host_resume()
219 		if (ssusb->otg_switch.is_u3_drd)  in ssusb_host_resume()
223 	/* power on host ip */  in ssusb_host_resume()
226 	/* power on u3 ports except skipped ones */  in ssusb_host_resume()
236 	/* power on all u2 ports except skipped ones */  in ssusb_host_resume()
252 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_host_suspend()
253 	int num_u3p = ssusb->u3_ports;  in ssusb_host_suspend()
254 	int num_u2p = ssusb->u2_ports;  in ssusb_host_suspend()
258 	/* power down u3 ports except skipped ones */  in ssusb_host_suspend()
260 		if ((0x1 << i) & ssusb->u3p_dis_msk)  in ssusb_host_suspend()
268 	/* power down u2 ports except skipped ones */  in ssusb_host_suspend()
270 		if ((0x1 << i) & ssusb->u2p_dis_msk)  in ssusb_host_suspend()
278 	/* power down host ip */  in ssusb_host_suspend()
289 	 * power on host and power on/enable all ports  in ssusb_host_setup()
295 	/* if port0 supports dual-role, works as host mode by default */  in ssusb_host_setup()
296 	ssusb_set_vbus(&ssusb->otg_switch, 1);  in ssusb_host_setup()
301 	if (ssusb->is_host)  in ssusb_host_cleanup()
302 		ssusb_set_vbus(&ssusb->otg_switch, 0);  in ssusb_host_cleanup()
315 	struct device *parent_dev = ssusb->dev;  in ssusb_host_init()
334 	of_platform_depopulate(ssusb->dev);  in ssusb_host_exit()