1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/dma-mapping.h>
17 #include "mtu3.h"
21 /* u2-port0 should be powered on and enabled; */
24 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_check_clocks()
34 		dev_err(ssusb->dev, "clks of sts1 are not stable!\n");  in ssusb_check_clocks()
41 		dev_err(ssusb->dev, "mac2 clock is not stable\n");  in ssusb_check_clocks()
54 	if (!ssusb->is_host)  in wait_for_ip_sleep()
61 	ret = readl_poll_timeout(ssusb->ippc_base + U3D_SSUSB_IP_PW_STS1, value,  in wait_for_ip_sleep()
64 		dev_err(ssusb->dev, "ip sleep failed!!!\n");  in wait_for_ip_sleep()
65 		ret = -EBUSY;  in wait_for_ip_sleep()
79 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_init()
80 		ret = phy_init(ssusb->phys[i]);  in ssusb_phy_init()
87 	for (; i > 0; i--)  in ssusb_phy_init()
88 		phy_exit(ssusb->phys[i - 1]);  in ssusb_phy_init()
97 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_exit()
98 		phy_exit(ssusb->phys[i]);  in ssusb_phy_exit()
108 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_power_on()
109 		ret = phy_power_on(ssusb->phys[i]);  in ssusb_phy_power_on()
116 	for (; i > 0; i--)  in ssusb_phy_power_on()
117 		phy_power_off(ssusb->phys[i - 1]);  in ssusb_phy_power_on()
126 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_power_off()
127 		phy_power_off(ssusb->phys[i]);  in ssusb_phy_power_off()
134 	ret = regulator_enable(ssusb->vusb33);  in ssusb_rscs_init()
136 		dev_err(ssusb->dev, "failed to enable vusb33\n");  in ssusb_rscs_init()
140 	ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_init()
146 		dev_err(ssusb->dev, "failed to init phy\n");  in ssusb_rscs_init()
152 		dev_err(ssusb->dev, "failed to power on phy\n");  in ssusb_rscs_init()
161 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_init()
163 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_init()
170 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_exit()
171 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_exit()
179 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
181 	mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
186 	 * power down device ip, otherwise ip-sleep will fail when working as  in ssusb_ip_sw_reset()
189 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);  in ssusb_ip_sw_reset()
194 	struct device_node *node = pdev->dev.of_node;  in get_ssusb_rscs()
195 	struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;  in get_ssusb_rscs()
196 	struct clk_bulk_data *clks = ssusb->clks;  in get_ssusb_rscs()
197 	struct device *dev = &pdev->dev;  in get_ssusb_rscs()
201 	ssusb->vusb33 = devm_regulator_get(dev, "vusb33");  in get_ssusb_rscs()
202 	if (IS_ERR(ssusb->vusb33)) {  in get_ssusb_rscs()
204 		return PTR_ERR(ssusb->vusb33);  in get_ssusb_rscs()
215 	ssusb->num_phys = of_count_phandle_with_args(node,  in get_ssusb_rscs()
216 			"phys", "#phy-cells");  in get_ssusb_rscs()
217 	if (ssusb->num_phys > 0) {  in get_ssusb_rscs()
218 		ssusb->phys = devm_kcalloc(dev, ssusb->num_phys,  in get_ssusb_rscs()
219 					sizeof(*ssusb->phys), GFP_KERNEL);  in get_ssusb_rscs()
220 		if (!ssusb->phys)  in get_ssusb_rscs()
221 			return -ENOMEM;  in get_ssusb_rscs()
223 		ssusb->num_phys = 0;  in get_ssusb_rscs()
226 	for (i = 0; i < ssusb->num_phys; i++) {  in get_ssusb_rscs()
227 		ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i);  in get_ssusb_rscs()
228 		if (IS_ERR(ssusb->phys[i])) {  in get_ssusb_rscs()
229 			dev_err(dev, "failed to get phy-%d\n", i);  in get_ssusb_rscs()
230 			return PTR_ERR(ssusb->phys[i]);  in get_ssusb_rscs()
234 	ssusb->ippc_base = devm_platform_ioremap_resource_byname(pdev, "ippc");  in get_ssusb_rscs()
235 	if (IS_ERR(ssusb->ippc_base))  in get_ssusb_rscs()
236 		return PTR_ERR(ssusb->ippc_base);  in get_ssusb_rscs()
238 	ssusb->wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup");  in get_ssusb_rscs()
239 	if (ssusb->wakeup_irq == -EPROBE_DEFER)  in get_ssusb_rscs()
240 		return ssusb->wakeup_irq;  in get_ssusb_rscs()
242 	ssusb->dr_mode = usb_get_dr_mode(dev);  in get_ssusb_rscs()
243 	if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN)  in get_ssusb_rscs()
244 		ssusb->dr_mode = USB_DR_MODE_OTG;  in get_ssusb_rscs()
246 	if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)  in get_ssusb_rscs()
257 	of_property_read_u32(node, "mediatek,u3p-dis-msk",  in get_ssusb_rscs()
258 			     &ssusb->u3p_dis_msk);  in get_ssusb_rscs()
259 	of_property_read_u32(node, "mediatek,u2p-dis-msk",  in get_ssusb_rscs()
260 			     &ssusb->u2p_dis_msk);  in get_ssusb_rscs()
262 	otg_sx->vbus = devm_regulator_get(dev, "vbus");  in get_ssusb_rscs()
263 	if (IS_ERR(otg_sx->vbus)) {  in get_ssusb_rscs()
265 		return PTR_ERR(otg_sx->vbus);  in get_ssusb_rscs()
268 	if (ssusb->dr_mode == USB_DR_MODE_HOST)  in get_ssusb_rscs()
271 	/* if dual-role mode is supported */  in get_ssusb_rscs()
272 	otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");  in get_ssusb_rscs()
273 	otg_sx->manual_drd_enabled =  in get_ssusb_rscs()
274 		of_property_read_bool(node, "enable-manual-drd");  in get_ssusb_rscs()
275 	otg_sx->role_sw_used = of_property_read_bool(node, "usb-role-switch");  in get_ssusb_rscs()
277 	/* can't disable port0 when use dual-role mode */  in get_ssusb_rscs()
278 	ssusb->u2p_dis_msk &= ~0x1;  in get_ssusb_rscs()
280 	if (otg_sx->role_sw_used || otg_sx->manual_drd_enabled)  in get_ssusb_rscs()
284 		otg_sx->edev = extcon_get_edev_by_phandle(ssusb->dev, 0);  in get_ssusb_rscs()
285 		if (IS_ERR(otg_sx->edev)) {  in get_ssusb_rscs()
286 			return dev_err_probe(dev, PTR_ERR(otg_sx->edev),  in get_ssusb_rscs()
293 		 ssusb->dr_mode, otg_sx->is_u3_drd,  in get_ssusb_rscs()
294 		otg_sx->manual_drd_enabled ? "manual" : "auto");  in get_ssusb_rscs()
296 		 ssusb->u2p_dis_msk, ssusb->u3p_dis_msk);  in get_ssusb_rscs()
303 	struct device_node *node = pdev->dev.of_node;  in mtu3_probe()
304 	struct device *dev = &pdev->dev;  in mtu3_probe()
306 	int ret = -ENOMEM;  in mtu3_probe()
311 		return -ENOMEM;  in mtu3_probe()
316 		return -ENOTSUPP;  in mtu3_probe()
320 	ssusb->dev = dev;  in mtu3_probe()
339 	if (ssusb->wakeup_irq > 0) {  in mtu3_probe()
340 		ret = dev_pm_set_dedicated_wake_irq(dev, ssusb->wakeup_irq);  in mtu3_probe()
342 			dev_err(dev, "failed to set wakeup irq %d\n", ssusb->wakeup_irq);  in mtu3_probe()
345 		dev_info(dev, "wakeup irq %d\n", ssusb->wakeup_irq);  in mtu3_probe()
351 		ssusb->dr_mode = USB_DR_MODE_HOST;  in mtu3_probe()
353 		ssusb->dr_mode = USB_DR_MODE_PERIPHERAL;  in mtu3_probe()
356 	ssusb->is_host = !(ssusb->dr_mode == USB_DR_MODE_PERIPHERAL);  in mtu3_probe()
358 	switch (ssusb->dr_mode) {  in mtu3_probe()
393 		dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode);  in mtu3_probe()
394 		ret = -EINVAL;  in mtu3_probe()
423 	pm_runtime_get_sync(&pdev->dev);  in mtu3_remove()
425 	switch (ssusb->dr_mode) {  in mtu3_remove()
438 		return -EINVAL;  in mtu3_remove()
443 	pm_runtime_disable(&pdev->dev);  in mtu3_remove()
444 	pm_runtime_put_noidle(&pdev->dev);  in mtu3_remove()
445 	pm_runtime_set_suspended(&pdev->dev);  in mtu3_remove()
452 	switch (ssusb->dr_mode) {  in resume_ip_and_ports()
460 		ssusb_host_resume(ssusb, !ssusb->is_host);  in resume_ip_and_ports()
461 		if (!ssusb->is_host)  in resume_ip_and_ports()
466 		return -EINVAL;  in resume_ip_and_ports()
479 	switch (ssusb->dr_mode) {  in mtu3_suspend_common()
490 		if (!ssusb->is_host) {  in mtu3_suspend_common()
498 		return -EINVAL;  in mtu3_suspend_common()
506 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in mtu3_suspend_common()
524 	ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks);  in mtu3_resume_common()
535 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in mtu3_resume_common()
575 	{.compatible = "mediatek,mt8173-mtu3",},
576 	{.compatible = "mediatek,mtu3",},