1 // SPDX-License-Identifier: GPL-2.0-only
3  * omap-usb-tll.c - The USB TLL driver for OMAP EHCI & OHCI
5  * Copyright (C) 2012-2013 Texas Instruments Incorporated - https://www.ti.com
19 #include <linux/platform_data/usb-omap.h>
22 #include "omap-usb.h"
48 #define	OMAP_TLL_CHANNEL_CONF(num)			(0x040 + 0x004 * num)  argument
71 #define	OMAP_TLL_ULPI_FUNCTION_CTRL(num)		(0x804 + 0x100 * num)  argument
72 #define	OMAP_TLL_ULPI_INTERFACE_CTRL(num)		(0x807 + 0x100 * num)  argument
73 #define	OMAP_TLL_ULPI_OTG_CTRL(num)			(0x80A + 0x100 * num)  argument
74 #define	OMAP_TLL_ULPI_INT_EN_RISE(num)			(0x80D + 0x100 * num)  argument
75 #define	OMAP_TLL_ULPI_INT_EN_FALL(num)			(0x810 + 0x100 * num)  argument
76 #define	OMAP_TLL_ULPI_INT_STATUS(num)			(0x813 + 0x100 * num)  argument
77 #define	OMAP_TLL_ULPI_INT_LATCH(num)			(0x814 + 0x100 * num)  argument
78 #define	OMAP_TLL_ULPI_DEBUG(num)			(0x815 + 0x100 * num)  argument
79 #define	OMAP_TLL_ULPI_SCRATCH_REGISTER(num)		(0x816 + 0x100 * num)  argument
87 /* Values of USBTLL_REVISION - Note: these are not given in the TRM */
101 	int		nch;		/* num. of channels */
105 /*-------------------------------------------------------------------------*/
111 /*-------------------------------------------------------------------------*/
128 /*-------------------------------------------------------------------------*/
151  * convert the port-mode enum to a value we can use in the FSLSMODE
194  * usbtll_omap_probe - initialize TI-based HCDs
202 	struct device				*dev =  &pdev->dev;  in usbtll_omap_probe()
228 		dev_dbg(dev, "rev 0x%x not recognized, assuming %d channels\n",  in usbtll_omap_probe()
237 		return -ENOMEM;  in usbtll_omap_probe()
240 	tll->base = base;  in usbtll_omap_probe()
241 	tll->nch = nch;  in usbtll_omap_probe()
249 		tll->ch_clk[i] = clk_get(dev, clkname);  in usbtll_omap_probe()
251 		if (IS_ERR(tll->ch_clk[i]))  in usbtll_omap_probe()
254 			clk_prepare(tll->ch_clk[i]);  in usbtll_omap_probe()
267  * usbtll_omap_remove - shutdown processing for UHH & TLL HCDs
281 	for (i = 0; i < tll->nch; i++) {  in usbtll_omap_remove()
282 		if (!IS_ERR(tll->ch_clk[i])) {  in usbtll_omap_remove()
283 			clk_unprepare(tll->ch_clk[i]);  in usbtll_omap_remove()
284 			clk_put(tll->ch_clk[i]);  in usbtll_omap_remove()
288 	pm_runtime_disable(&pdev->dev);  in usbtll_omap_remove()
293 	{ .compatible = "ti,usbhs-tll" },
316 		return -ENODEV;  in omap_tll_init()
323 	for (i = 0; i < tll->nch; i++)  in omap_tll_init()
324 		needs_tll |= omap_usb_mode_needs_tll(pdata->port_mode[i]);  in omap_tll_init()
327 		void __iomem *base = tll->base;  in omap_tll_init()
338 		/* Enable channels now */  in omap_tll_init()
339 		for (i = 0; i < tll->nch; i++) {  in omap_tll_init()
342 			if (is_ohci_port(pdata->port_mode[i])) {  in omap_tll_init()
343 				reg |= ohci_omap3_fslsmode(pdata->port_mode[i])  in omap_tll_init()
346 			} else if (pdata->port_mode[i] ==  in omap_tll_init()
356 			} else if (pdata->port_mode[i] ==  in omap_tll_init()
390 		return -ENODEV;  in omap_tll_enable()
397 	for (i = 0; i < tll->nch; i++) {  in omap_tll_enable()
398 		if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {  in omap_tll_enable()
401 			if (IS_ERR(tll->ch_clk[i]))  in omap_tll_enable()
404 			r = clk_enable(tll->ch_clk[i]);  in omap_tll_enable()
424 		return -ENODEV;  in omap_tll_disable()
429 	for (i = 0; i < tll->nch; i++) {  in omap_tll_disable()
430 		if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {  in omap_tll_disable()
431 			if (!IS_ERR(tll->ch_clk[i]))  in omap_tll_disable()
432 				clk_disable(tll->ch_clk[i]);  in omap_tll_disable()