3  * (C) Copyright 2004-2008
11  * SPDX-License-Identifier:	GPL-2.0+
21 #include <asm/ehci-omap.h>
34 	rev = readl(&uhh->rev);  in omap_uhh_reset()
36 	/* Soft RESET */  in omap_uhh_reset()
37 	writel(OMAP_UHH_SYSCONFIG_SOFTRESET, &uhh->sysc);  in omap_uhh_reset()
41 		/* Wait for soft RESET to complete */  in omap_uhh_reset()
42 		while (!(readl(&uhh->syss) & 0x1)) {  in omap_uhh_reset()
44 				printf("%s: RESET timeout\n", __func__);  in omap_uhh_reset()
45 				return -1;  in omap_uhh_reset()
51 		/* Set No-Idle, No-Standby */  in omap_uhh_reset()
52 		writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc);  in omap_uhh_reset()
59 		/* Wait for soft RESET to complete */  in omap_uhh_reset()
60 		while ((readl(&uhh->sysc) & 0x1)) {  in omap_uhh_reset()
62 				printf("%s: RESET timeout\n", __func__);  in omap_uhh_reset()
63 				return -1;  in omap_uhh_reset()
69 		writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc);  in omap_uhh_reset()
80 	/* perform TLL soft reset, and wait until reset is complete */  in omap_ehci_tll_reset()
81 	writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, &usbtll->sysc);  in omap_ehci_tll_reset()
83 	/* Wait for TLL reset to complete */  in omap_ehci_tll_reset()
84 	while (!(readl(&usbtll->syss) & OMAP_USBTLL_SYSSTATUS_RESETDONE))  in omap_ehci_tll_reset()
87 			return -EL3RST;  in omap_ehci_tll_reset()
98 	reg = readl(&usbtll->channel_conf + port);  in omap_usbhs_hsic_init()
106 	writel(reg, &usbtll->channel_conf + port);  in omap_usbhs_hsic_init()
114 	ulpi_vp.viewport_addr = (u32)&ehci->insreg05_utmi_ulpi;  in omap_ehci_soft_phy_reset()
129 /* controls PHY(s) reset signal(s) */
130 static inline void omap_ehci_phy_reset(int on, int delay)  in omap_ehci_phy_reset()  argument
134 	 * Hold the PHY in RESET for enough time till  in omap_ehci_phy_reset()
137 	if (delay && !on)  in omap_ehci_phy_reset()
138 		udelay(delay);  in omap_ehci_phy_reset()
140 	gpio_request(CONFIG_OMAP_EHCI_PHY1_RESET_GPIO, "USB PHY1 reset");  in omap_ehci_phy_reset()
144 	gpio_request(CONFIG_OMAP_EHCI_PHY2_RESET_GPIO, "USB PHY2 reset");  in omap_ehci_phy_reset()
148 	gpio_request(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, "USB PHY3 reset");  in omap_ehci_phy_reset()
152 	/* Hold the PHY in RESET for enough time till DIR is high */  in omap_ehci_phy_reset()
154 	if (delay && on)  in omap_ehci_phy_reset()
155 		udelay(delay);  in omap_ehci_phy_reset()
158 #define omap_ehci_phy_reset(on, delay)	do {} while (0)  argument
161 /* Reset is needed otherwise the kernel-driver will throw an error. */
168 		return -1;  in omap_ehci_hcd_stop()
171 		return -1;  in omap_ehci_hcd_stop()
178  * Based on "drivers/usb/host/ehci-omap.c" from Linux 3.1
193 	/* Put the PHY in RESET */  in omap_ehci_hcd_init()
206 		OMAP_USBTLL_SYSCONFIG_CACTIVITY, &usbtll->sysc);  in omap_ehci_hcd_init()
209 	writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc);  in omap_ehci_hcd_init()
217 	rev = readl(&uhh->rev);  in omap_ehci_hcd_init()
219 		if (is_ehci_phy_mode(usbhs_pdata->port_mode[0]))  in omap_ehci_hcd_init()
224 		if (is_ehci_phy_mode(usbhs_pdata->port_mode[1]))  in omap_ehci_hcd_init()
229 		if (is_ehci_phy_mode(usbhs_pdata->port_mode[2]))  in omap_ehci_hcd_init()
240 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[0]))  in omap_ehci_hcd_init()
243 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[1]))  in omap_ehci_hcd_init()
256 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[0]))  in omap_ehci_hcd_init()
259 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[1]))  in omap_ehci_hcd_init()
262 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[2]))  in omap_ehci_hcd_init()
267 	writel(reg, &uhh->hostconfig);  in omap_ehci_hcd_init()
270 		if (is_ehci_hsic_mode(usbhs_pdata->port_mode[i]))  in omap_ehci_hcd_init()
280 	 * This breaks suspend-resume if the root-hub is allowed  in omap_ehci_hcd_init()
284 	writel(EHCI_INSNREG04_DISABLE_UNSUSPEND, &ehci->insreg04);  in omap_ehci_hcd_init()
287 		if (is_ehci_phy_mode(usbhs_pdata->port_mode[i]))  in omap_ehci_hcd_init()