1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/dma-mapping.h>
18 #include "mtu3.h"
22 /* u2-port0 should be powered on and enabled; */
25 	void __iomem *ibase = ssusb->ippc_base;  in ssusb_check_clocks()
35 		dev_err(ssusb->dev, "clks of sts1 are not stable!\n");  in ssusb_check_clocks()
42 		dev_err(ssusb->dev, "mac2 clock is not stable\n");  in ssusb_check_clocks()
55 	if (!ssusb->is_host)  in wait_for_ip_sleep()
62 	ret = readl_poll_timeout(ssusb->ippc_base + U3D_SSUSB_IP_PW_STS1, value,  in wait_for_ip_sleep()
65 		dev_err(ssusb->dev, "ip sleep failed!!!\n");  in wait_for_ip_sleep()
66 		ret = -EBUSY;  in wait_for_ip_sleep()
80 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_init()
81 		ret = phy_init(ssusb->phys[i]);  in ssusb_phy_init()
88 	for (; i > 0; i--)  in ssusb_phy_init()
89 		phy_exit(ssusb->phys[i - 1]);  in ssusb_phy_init()
98 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_exit()
99 		phy_exit(ssusb->phys[i]);  in ssusb_phy_exit()
109 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_power_on()
110 		ret = phy_power_on(ssusb->phys[i]);  in ssusb_phy_power_on()
117 	for (; i > 0; i--)  in ssusb_phy_power_on()
118 		phy_power_off(ssusb->phys[i - 1]);  in ssusb_phy_power_on()
127 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_power_off()
128 		phy_power_off(ssusb->phys[i]);  in ssusb_phy_power_off()
135 	ret = regulator_enable(ssusb->vusb33);  in ssusb_rscs_init()
137 		dev_err(ssusb->dev, "failed to enable vusb33\n");  in ssusb_rscs_init()
141 	ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_init()
147 		dev_err(ssusb->dev, "failed to init phy\n");  in ssusb_rscs_init()
153 		dev_err(ssusb->dev, "failed to power on phy\n");  in ssusb_rscs_init()
162 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_init()
164 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_init()
171 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in ssusb_rscs_exit()
172 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_exit()
180 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
182 	mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
187 	 * power down device ip, otherwise ip-sleep will fail when working as  in ssusb_ip_sw_reset()
190 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);  in ssusb_ip_sw_reset()
195 	struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;  in ssusb_u3_drd_check()
201 	if (ssusb->u3p_dis_msk & BIT(0)) {  in ssusb_u3_drd_check()
202 		otg_sx->is_u3_drd = false;  in ssusb_u3_drd_check()
206 	value = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_DEV_CAP);  in ssusb_u3_drd_check()
209 	value = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_XHCI_CAP);  in ssusb_u3_drd_check()
212 	otg_sx->is_u3_drd = !!(dev_u3p_num && host_u3p_num);  in ssusb_u3_drd_check()
215 	dev_info(ssusb->dev, "usb3-drd: %d\n", otg_sx->is_u3_drd);  in ssusb_u3_drd_check()
220 	struct device_node *node = pdev->dev.of_node;  in get_ssusb_rscs()
221 	struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;  in get_ssusb_rscs()
222 	struct clk_bulk_data *clks = ssusb->clks;  in get_ssusb_rscs()
223 	struct device *dev = &pdev->dev;  in get_ssusb_rscs()
227 	ssusb->vusb33 = devm_regulator_get(dev, "vusb33");  in get_ssusb_rscs()
228 	if (IS_ERR(ssusb->vusb33)) {  in get_ssusb_rscs()
230 		return PTR_ERR(ssusb->vusb33);  in get_ssusb_rscs()
243 	ssusb->num_phys = of_count_phandle_with_args(node,  in get_ssusb_rscs()
244 			"phys", "#phy-cells");  in get_ssusb_rscs()
245 	if (ssusb->num_phys > 0) {  in get_ssusb_rscs()
246 		ssusb->phys = devm_kcalloc(dev, ssusb->num_phys,  in get_ssusb_rscs()
247 					sizeof(*ssusb->phys), GFP_KERNEL);  in get_ssusb_rscs()
248 		if (!ssusb->phys)  in get_ssusb_rscs()
249 			return -ENOMEM;  in get_ssusb_rscs()
251 		ssusb->num_phys = 0;  in get_ssusb_rscs()
254 	for (i = 0; i < ssusb->num_phys; i++) {  in get_ssusb_rscs()
255 		ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i);  in get_ssusb_rscs()
256 		if (IS_ERR(ssusb->phys[i])) {  in get_ssusb_rscs()
257 			dev_err(dev, "failed to get phy-%d\n", i);  in get_ssusb_rscs()
258 			return PTR_ERR(ssusb->phys[i]);  in get_ssusb_rscs()
262 	ssusb->ippc_base = devm_platform_ioremap_resource_byname(pdev, "ippc");  in get_ssusb_rscs()
263 	if (IS_ERR(ssusb->ippc_base))  in get_ssusb_rscs()
264 		return PTR_ERR(ssusb->ippc_base);  in get_ssusb_rscs()
266 	ssusb->wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup");  in get_ssusb_rscs()
267 	if (ssusb->wakeup_irq == -EPROBE_DEFER)  in get_ssusb_rscs()
268 		return ssusb->wakeup_irq;  in get_ssusb_rscs()
270 	ssusb->dr_mode = usb_get_dr_mode(dev);  in get_ssusb_rscs()
271 	if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN)  in get_ssusb_rscs()
272 		ssusb->dr_mode = USB_DR_MODE_OTG;  in get_ssusb_rscs()
274 	of_property_read_u32(node, "mediatek,u3p-dis-msk", &ssusb->u3p_dis_msk);  in get_ssusb_rscs()
276 	if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)  in get_ssusb_rscs()
287 	of_property_read_u32(node, "mediatek,u2p-dis-msk",  in get_ssusb_rscs()
288 			     &ssusb->u2p_dis_msk);  in get_ssusb_rscs()
290 	otg_sx->vbus = devm_regulator_get(dev, "vbus");  in get_ssusb_rscs()
291 	if (IS_ERR(otg_sx->vbus)) {  in get_ssusb_rscs()
293 		return PTR_ERR(otg_sx->vbus);  in get_ssusb_rscs()
296 	if (ssusb->dr_mode == USB_DR_MODE_HOST)  in get_ssusb_rscs()
299 	/* if dual-role mode is supported */  in get_ssusb_rscs()
300 	otg_sx->manual_drd_enabled =  in get_ssusb_rscs()
301 		of_property_read_bool(node, "enable-manual-drd");  in get_ssusb_rscs()
302 	otg_sx->role_sw_used = of_property_read_bool(node, "usb-role-switch");  in get_ssusb_rscs()
304 	/* can't disable port0 when use dual-role mode */  in get_ssusb_rscs()
305 	ssusb->u2p_dis_msk &= ~0x1;  in get_ssusb_rscs()
307 	if (otg_sx->role_sw_used || otg_sx->manual_drd_enabled)  in get_ssusb_rscs()
311 		otg_sx->edev = extcon_get_edev_by_phandle(ssusb->dev, 0);  in get_ssusb_rscs()
312 		if (IS_ERR(otg_sx->edev)) {  in get_ssusb_rscs()
313 			return dev_err_probe(dev, PTR_ERR(otg_sx->edev),  in get_ssusb_rscs()
319 	dev_info(dev, "dr_mode: %d, drd: %s\n", ssusb->dr_mode,  in get_ssusb_rscs()
320 		 otg_sx->manual_drd_enabled ? "manual" : "auto");  in get_ssusb_rscs()
322 		 ssusb->u2p_dis_msk, ssusb->u3p_dis_msk);  in get_ssusb_rscs()
329 	struct device_node *node = pdev->dev.of_node;  in mtu3_probe()
330 	struct device *dev = &pdev->dev;  in mtu3_probe()
332 	int ret = -ENOMEM;  in mtu3_probe()
337 		return -ENOMEM;  in mtu3_probe()
342 		return -ENOTSUPP;  in mtu3_probe()
346 	ssusb->dev = dev;  in mtu3_probe()
367 	if (ssusb->wakeup_irq > 0) {  in mtu3_probe()
368 		ret = dev_pm_set_dedicated_wake_irq_reverse(dev, ssusb->wakeup_irq);  in mtu3_probe()
370 			dev_err(dev, "failed to set wakeup irq %d\n", ssusb->wakeup_irq);  in mtu3_probe()
373 		dev_info(dev, "wakeup irq %d\n", ssusb->wakeup_irq);  in mtu3_probe()
386 		ssusb->dr_mode = USB_DR_MODE_HOST;  in mtu3_probe()
388 		ssusb->dr_mode = USB_DR_MODE_PERIPHERAL;  in mtu3_probe()
391 	ssusb->is_host = !(ssusb->dr_mode == USB_DR_MODE_PERIPHERAL);  in mtu3_probe()
393 	switch (ssusb->dr_mode) {  in mtu3_probe()
428 		dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode);  in mtu3_probe()
429 		ret = -EINVAL;  in mtu3_probe()
458 	pm_runtime_get_sync(&pdev->dev);  in mtu3_remove()
460 	switch (ssusb->dr_mode) {  in mtu3_remove()
486 	pm_runtime_disable(&pdev->dev);  in mtu3_remove()
487 	pm_runtime_put_noidle(&pdev->dev);  in mtu3_remove()
488 	pm_runtime_set_suspended(&pdev->dev);  in mtu3_remove()
493 	switch (ssusb->dr_mode) {  in resume_ip_and_ports()
501 		ssusb_host_resume(ssusb, !ssusb->is_host);  in resume_ip_and_ports()
502 		if (!ssusb->is_host)  in resume_ip_and_ports()
507 		return -EINVAL;  in resume_ip_and_ports()
520 	switch (ssusb->dr_mode) {  in mtu3_suspend_common()
531 		if (!ssusb->is_host) {  in mtu3_suspend_common()
539 		return -EINVAL;  in mtu3_suspend_common()
547 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in mtu3_suspend_common()
565 	ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks);  in mtu3_resume_common()
576 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);  in mtu3_resume_common()
616 	{.compatible = "mediatek,mt8173-mtu3",},
617 	{.compatible = "mediatek,mtu3",},