/* $NetBSD: ti_usbtll.c,v 1.1.2.2 2019/11/27 13:46:44 martin Exp $ */ /*- * Copyright (c) 2019 Jared McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ti_usbtll.c,v 1.1.2.2 2019/11/27 13:46:44 martin Exp $"); #include #include #include #include #include #include #include #include #define USBTLL_SYSCONFIG 0x10 #define USBTLL_SYSCONFIG_CLOCKACTIVITY 0x00000100 #define USBTLL_SYSCONFIG_SIDLEMODE 0x00000018 #define USBTLL_SYSCONFIG_ENAWAKEUP 0x00000004 #define USBTLL_SYSCONFIG_SOFTRESET 0x00000002 #define USBTLL_SYSCONFIG_AUTOIDLE 0x00000001 #define USBTLL_SYSSTATUS 0x14 #define USBTLL_SYSSTATUS_RESETDONE 0x00000001 #define USBTLL_SHARED_CONF 0x30 #define USBTLL_SHARED_CONF_USB_90D_DDR_EN 0x00000040 #define USBTLL_SHARED_CONF_USB_180D_SDR_EN 0x00000020 #define USBTLL_SHARED_CONF_USB_DIVRATIO 0x0000001c #define USBTLL_SHARED_CONF_FCLK_REQ 0x00000002 #define USBTLL_SHARED_CONF_FCLK_IS_ON 0x00000001 #define USBTLL_CHANNEL_CONF(i) (0x40 + (0x04 * (i))) #define USBTLL_CHANNEL_CONF_FSLSLINESTATE 0x30000000 #define USBTLL_CHANNEL_CONF_FSLSMODE 0x0f000000 #define USBTLL_CHANNEL_CONF_TESTTXSE0 0x00100000 #define USBTLL_CHANNEL_CONF_TESTTXDAT 0x00080000 #define USBTLL_CHANNEL_CONF_TESTTXEN 0x00040000 #define USBTLL_CHANNEL_CONF_TESTEN 0x00020000 #define USBTLL_CHANNEL_CONF_DRVVBUS 0x00010000 #define USBTLL_CHANNEL_CONF_CHRGVBUS 0x00008000 #define USBTLL_CHANNEL_CONF_ULPINOBITSTUFF 0x00000800 #define USBTLL_CHANNEL_CONF_ULPIAUTOIDLE 0x00000400 #define USBTLL_CHANNEL_CONF_UTMIAUTOIDLE 0x00000200 #define USBTLL_CHANNEL_CONF_ULPIDDRMODE 0x00000100 #define USBTLL_CHANNEL_CONF_ULPIOUTCLKMODE 0x00000080 #define USBTLL_CHANNEL_CONF_TLLFULLSPEED 0x00000040 #define USBTLL_CHANNEL_CONF_TLLCONNECT 0x00000020 #define USBTLL_CHANNEL_CONF_TLLATTACH 0x00000010 #define USBTLL_CHANNEL_CONF_UTMIISADEV 0x00000008 #define USBTLL_CHANNEL_CONF_CHANMODE 0x00000006 #define USBTLL_CHANNEL_CONF_CHANEN 0x00000001 static const char * const compatible[] = { "ti,usbhs-tll", NULL }; struct ti_usbtll_softc { device_t sc_dev; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; }; static int ti_usbtll_match(device_t, cfdata_t, void *); static void ti_usbtll_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(ti_usbtll, sizeof(struct ti_usbtll_softc), ti_usbtll_match, ti_usbtll_attach, NULL, NULL); #define RD4(sc, reg) \ bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) #define WR4(sc, reg, val) \ bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) static struct ti_usbtll_softc *ti_usbtll_sc = NULL; void tl_usbtll_enable_port(u_int); void tl_usbtll_enable_port(u_int port) { struct ti_usbtll_softc *sc = ti_usbtll_sc; uint32_t val; if (sc == NULL) { printf("%s: driver not loaded\n", __func__); return; } val = RD4(sc, USBTLL_CHANNEL_CONF(port)); val &= ~(USBTLL_CHANNEL_CONF_ULPINOBITSTUFF| USBTLL_CHANNEL_CONF_ULPIAUTOIDLE| USBTLL_CHANNEL_CONF_ULPIDDRMODE); val |= USBTLL_CHANNEL_CONF_CHANEN; WR4(sc, USBTLL_CHANNEL_CONF(port), val); } static void ti_usbtll_reset(struct ti_usbtll_softc *sc) { uint32_t val; int retry = 5000; WR4(sc, USBTLL_SYSCONFIG, USBTLL_SYSCONFIG_SOFTRESET); do { val = RD4(sc, USBTLL_SYSSTATUS); if (val & USBTLL_SYSSTATUS_RESETDONE) break; delay(10); } while (--retry > 0); if (retry == 0) aprint_error_dev(sc->sc_dev, "reset timeout\n"); } static void ti_usbtll_init(struct ti_usbtll_softc *sc) { uint32_t val; ti_usbtll_reset(sc); val = USBTLL_SYSCONFIG_ENAWAKEUP | USBTLL_SYSCONFIG_AUTOIDLE | USBTLL_SYSCONFIG_SIDLEMODE | USBTLL_SYSCONFIG_CLOCKACTIVITY; WR4(sc, USBTLL_SYSCONFIG, val); val = RD4(sc, USBTLL_SHARED_CONF); val |= (USBTLL_SHARED_CONF_FCLK_IS_ON | (1 << 2)); val &= ~USBTLL_SHARED_CONF_USB_90D_DDR_EN; val &= ~USBTLL_SHARED_CONF_USB_180D_SDR_EN; WR4(sc, USBTLL_SHARED_CONF, val); } static int ti_usbtll_match(device_t parent, cfdata_t match, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void ti_usbtll_attach(device_t parent, device_t self, void *aux) { struct ti_usbtll_softc *sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; bus_addr_t addr; bus_size_t size; if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } if (ti_prcm_enable_hwmod(phandle, 0) != 0) { aprint_error(": couldn't enable module\n"); return; } sc->sc_dev = self; sc->sc_bst = faa->faa_bst; if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) { aprint_error(": couldn't map registers\n"); return; } aprint_naive("\n"); aprint_normal(": OMAP HS USB Host TLL\n"); ti_usbtll_init(sc); if (ti_usbtll_sc == NULL) ti_usbtll_sc = sc; }