1 // SPDX-License-Identifier: GPL-2.0
9 #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()
53 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_init()
54 		ret = phy_init(ssusb->phys[i]);  in ssusb_phy_init()
61 	for (; i > 0; i--)  in ssusb_phy_init()
62 		phy_exit(ssusb->phys[i - 1]);  in ssusb_phy_init()
71 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_exit()
72 		phy_exit(ssusb->phys[i]);  in ssusb_phy_exit()
82 	for (i = 0; i < ssusb->num_phys; i++) {  in ssusb_phy_power_on()
83 		ret = phy_power_on(ssusb->phys[i]);  in ssusb_phy_power_on()
90 	for (; i > 0; i--)  in ssusb_phy_power_on()
91 		phy_power_off(ssusb->phys[i - 1]);  in ssusb_phy_power_on()
100 	for (i = 0; i < ssusb->num_phys; i++)  in ssusb_phy_power_off()
101 		phy_power_off(ssusb->phys[i]);  in ssusb_phy_power_off()
108 	ret = clk_prepare_enable(ssusb->sys_clk);  in ssusb_clks_enable()
110 		dev_err(ssusb->dev, "failed to enable sys_clk\n");  in ssusb_clks_enable()
114 	ret = clk_prepare_enable(ssusb->ref_clk);  in ssusb_clks_enable()
116 		dev_err(ssusb->dev, "failed to enable ref_clk\n");  in ssusb_clks_enable()
120 	ret = clk_prepare_enable(ssusb->mcu_clk);  in ssusb_clks_enable()
122 		dev_err(ssusb->dev, "failed to enable mcu_clk\n");  in ssusb_clks_enable()
126 	ret = clk_prepare_enable(ssusb->dma_clk);  in ssusb_clks_enable()
128 		dev_err(ssusb->dev, "failed to enable dma_clk\n");  in ssusb_clks_enable()
135 	clk_disable_unprepare(ssusb->mcu_clk);  in ssusb_clks_enable()
137 	clk_disable_unprepare(ssusb->ref_clk);  in ssusb_clks_enable()
139 	clk_disable_unprepare(ssusb->sys_clk);  in ssusb_clks_enable()
146 	clk_disable_unprepare(ssusb->dma_clk);  in ssusb_clks_disable()
147 	clk_disable_unprepare(ssusb->mcu_clk);  in ssusb_clks_disable()
148 	clk_disable_unprepare(ssusb->ref_clk);  in ssusb_clks_disable()
149 	clk_disable_unprepare(ssusb->sys_clk);  in ssusb_clks_disable()
156 	ret = regulator_enable(ssusb->vusb33);  in ssusb_rscs_init()
158 		dev_err(ssusb->dev, "failed to enable vusb33\n");  in ssusb_rscs_init()
168 		dev_err(ssusb->dev, "failed to init phy\n");  in ssusb_rscs_init()
174 		dev_err(ssusb->dev, "failed to power on phy\n");  in ssusb_rscs_init()
185 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_init()
193 	regulator_disable(ssusb->vusb33);  in ssusb_rscs_exit()
201 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
203 	mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);  in ssusb_ip_sw_reset()
208 	 * power down device ip, otherwise ip-sleep will fail when working as  in ssusb_ip_sw_reset()
211 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);  in ssusb_ip_sw_reset()
216 	struct device_node *node = pdev->dev.of_node;  in get_ssusb_rscs()
217 	struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;  in get_ssusb_rscs()
218 	struct device *dev = &pdev->dev;  in get_ssusb_rscs()
222 	ssusb->vusb33 = devm_regulator_get(dev, "vusb33");  in get_ssusb_rscs()
223 	if (IS_ERR(ssusb->vusb33)) {  in get_ssusb_rscs()
225 		return PTR_ERR(ssusb->vusb33);  in get_ssusb_rscs()
228 	ssusb->sys_clk = devm_clk_get(dev, "sys_ck");  in get_ssusb_rscs()
229 	if (IS_ERR(ssusb->sys_clk)) {  in get_ssusb_rscs()
231 		return PTR_ERR(ssusb->sys_clk);  in get_ssusb_rscs()
234 	ssusb->ref_clk = devm_clk_get_optional(dev, "ref_ck");  in get_ssusb_rscs()
235 	if (IS_ERR(ssusb->ref_clk))  in get_ssusb_rscs()
236 		return PTR_ERR(ssusb->ref_clk);  in get_ssusb_rscs()
238 	ssusb->mcu_clk = devm_clk_get_optional(dev, "mcu_ck");  in get_ssusb_rscs()
239 	if (IS_ERR(ssusb->mcu_clk))  in get_ssusb_rscs()
240 		return PTR_ERR(ssusb->mcu_clk);  in get_ssusb_rscs()
242 	ssusb->dma_clk = devm_clk_get_optional(dev, "dma_ck");  in get_ssusb_rscs()
243 	if (IS_ERR(ssusb->dma_clk))  in get_ssusb_rscs()
244 		return PTR_ERR(ssusb->dma_clk);  in get_ssusb_rscs()
246 	ssusb->num_phys = of_count_phandle_with_args(node,  in get_ssusb_rscs()
247 			"phys", "#phy-cells");  in get_ssusb_rscs()
248 	if (ssusb->num_phys > 0) {  in get_ssusb_rscs()
249 		ssusb->phys = devm_kcalloc(dev, ssusb->num_phys,  in get_ssusb_rscs()
250 					sizeof(*ssusb->phys), GFP_KERNEL);  in get_ssusb_rscs()
251 		if (!ssusb->phys)  in get_ssusb_rscs()
252 			return -ENOMEM;  in get_ssusb_rscs()
254 		ssusb->num_phys = 0;  in get_ssusb_rscs()
257 	for (i = 0; i < ssusb->num_phys; i++) {  in get_ssusb_rscs()
258 		ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i);  in get_ssusb_rscs()
259 		if (IS_ERR(ssusb->phys[i])) {  in get_ssusb_rscs()
260 			dev_err(dev, "failed to get phy-%d\n", i);  in get_ssusb_rscs()
261 			return PTR_ERR(ssusb->phys[i]);  in get_ssusb_rscs()
265 	ssusb->ippc_base = devm_platform_ioremap_resource_byname(pdev, "ippc");  in get_ssusb_rscs()
266 	if (IS_ERR(ssusb->ippc_base))  in get_ssusb_rscs()
267 		return PTR_ERR(ssusb->ippc_base);  in get_ssusb_rscs()
269 	ssusb->dr_mode = usb_get_dr_mode(dev);  in get_ssusb_rscs()
270 	if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN)  in get_ssusb_rscs()
271 		ssusb->dr_mode = USB_DR_MODE_OTG;  in get_ssusb_rscs()
273 	if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)  in get_ssusb_rscs()
284 	of_property_read_u32(node, "mediatek,u3p-dis-msk",  in get_ssusb_rscs()
285 			     &ssusb->u3p_dis_msk);  in get_ssusb_rscs()
287 	otg_sx->vbus = devm_regulator_get(dev, "vbus");  in get_ssusb_rscs()
288 	if (IS_ERR(otg_sx->vbus)) {  in get_ssusb_rscs()
290 		return PTR_ERR(otg_sx->vbus);  in get_ssusb_rscs()
293 	if (ssusb->dr_mode == USB_DR_MODE_HOST)  in get_ssusb_rscs()
296 	/* if dual-role mode is supported */  in get_ssusb_rscs()
297 	otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");  in get_ssusb_rscs()
298 	otg_sx->manual_drd_enabled =  in get_ssusb_rscs()
299 		of_property_read_bool(node, "enable-manual-drd");  in get_ssusb_rscs()
300 	otg_sx->role_sw_used = of_property_read_bool(node, "usb-role-switch");  in get_ssusb_rscs()
302 	if (!otg_sx->role_sw_used && of_property_read_bool(node, "extcon")) {  in get_ssusb_rscs()
303 		otg_sx->edev = extcon_get_edev_by_phandle(ssusb->dev, 0);  in get_ssusb_rscs()
304 		if (IS_ERR(otg_sx->edev)) {  in get_ssusb_rscs()
305 			dev_err(ssusb->dev, "couldn't get extcon device\n");  in get_ssusb_rscs()
306 			return PTR_ERR(otg_sx->edev);  in get_ssusb_rscs()
312 		ssusb->dr_mode, otg_sx->is_u3_drd, ssusb->u3p_dis_msk,  in get_ssusb_rscs()
313 		otg_sx->manual_drd_enabled ? "manual" : "auto");  in get_ssusb_rscs()
320 	struct device_node *node = pdev->dev.of_node;  in mtu3_probe()
321 	struct device *dev = &pdev->dev;  in mtu3_probe()
323 	int ret = -ENOMEM;  in mtu3_probe()
328 		return -ENOMEM;  in mtu3_probe()
333 		return -ENOTSUPP;  in mtu3_probe()
337 	ssusb->dev = dev;  in mtu3_probe()
357 		ssusb->dr_mode = USB_DR_MODE_HOST;  in mtu3_probe()
359 		ssusb->dr_mode = USB_DR_MODE_PERIPHERAL;  in mtu3_probe()
362 	ssusb->is_host = !(ssusb->dr_mode == USB_DR_MODE_PERIPHERAL);  in mtu3_probe()
364 	switch (ssusb->dr_mode) {  in mtu3_probe()
399 		dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode);  in mtu3_probe()
400 		ret = -EINVAL;  in mtu3_probe()
424 	switch (ssusb->dr_mode) {  in mtu3_remove()
437 		return -EINVAL;  in mtu3_remove()
441 	pm_runtime_put_sync(&pdev->dev);  in mtu3_remove()
442 	pm_runtime_disable(&pdev->dev);  in mtu3_remove()
449  * when support dual-role mode, we reject suspend when
459 	if (!ssusb->is_host)  in mtu3_suspend()
477 	if (!ssusb->is_host)  in mtu3_resume()
508 	{.compatible = "mediatek,mt8173-mtu3",},
509 	{.compatible = "mediatek,mtu3",},