/* $NetBSD: ti_usb.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_usb.c,v 1.1.2.2 2019/11/27 13:46:44 martin Exp $"); #include #include #include #include #include #include #include #include #define UHH_SYSCONFIG 0x10 #define UHH_SYSCONFIG_MIDLEMODE_MASK 0x00003000 #define UHH_SYSCONFIG_MIDLEMODE_SMARTSTANDBY 0x00002000 #define UHH_SYSCONFIG_CLOCKACTIVITY 0x00000100 #define UHH_SYSCONFIG_SIDLEMODE_MASK 0x00000018 #define UHH_SYSCONFIG_SIDLEMODE_SMARTIDLE 0x00000008 #define UHH_SYSCONFIG_ENAWAKEUP 0x00000004 #define UHH_SYSCONFIG_SOFTRESET 0x00000002 #define UHH_SYSCONFIG_AUTOIDLE 0x00000001 #define UHH_HOSTCONFIG 0x40 #define UHH_HOSTCONFIG_APP_START_CLK __BIT(31) #define UHH_HOSTCONFIG_P3_MODE __BITS(21,20) #define UHH_HOSTCONFIG_P2_MODE __BITS(19,18) #define UHH_HOSTCONFIG_P1_MODE __BITS(17,16) #define UHH_HOSTCONFIG_PMODE_ULPI_PHY 0 #define UHH_HOSTCONFIG_PMODE_UTMI 1 #define UHH_HOSTCONFIG_PMODE_HSIC 3 #define UHH_HOSTCONFIG_P3_ULPI_BYPASS __BIT(12) #define UHH_HOSTCONFIG_P2_ULPI_BYPASS __BIT(11) #define UHH_HOSTCONFIG_P3_CONNECT_STATUS __BIT(10) #define UHH_HOSTCONFIG_P2_CONNECT_STATUS __BIT(9) #define UHH_HOSTCONFIG_P1_CONNECT_STATUS __BIT(8) #define UHH_HOSTCONFIG_ENA_INCR_ALIGN __BIT(5) #define UHH_HOSTCONFIG_ENA_INCR16 __BIT(4) #define UHH_HOSTCONFIG_ENA_INCR8 __BIT(3) #define UHH_HOSTCONFIG_ENA_INCR4 __BIT(2) #define UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN __BIT(1) #define UHH_HOSTCONFIG_P1_ULPI_BYPASS __BIT(0) extern void tl_usbtll_enable_port(u_int); static const char * const compatible[] = { "ti,usbhs-host", NULL }; #define TI_USB_NPORTS 3 enum { CONNECT_STATUS, ULPI_BYPASS, TI_USB_NBITS }; static const uint32_t ti_usb_portbits[TI_USB_NPORTS][TI_USB_NBITS] = { [0] = { [CONNECT_STATUS] = UHH_HOSTCONFIG_P1_CONNECT_STATUS, [ULPI_BYPASS] = UHH_HOSTCONFIG_P1_ULPI_BYPASS, }, [1] = { [CONNECT_STATUS] = UHH_HOSTCONFIG_P2_CONNECT_STATUS, [ULPI_BYPASS] = UHH_HOSTCONFIG_P2_ULPI_BYPASS, }, [2] = { [CONNECT_STATUS] = UHH_HOSTCONFIG_P3_CONNECT_STATUS, [ULPI_BYPASS] = UHH_HOSTCONFIG_P3_ULPI_BYPASS, }, }; enum { PORT_UNUSED, PORT_EHCI_PHY, PORT_EHCI_TLL, PORT_EHCI_HSIC, }; struct ti_usb_softc { device_t sc_dev; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; u_int sc_portmode[TI_USB_NPORTS]; }; static int ti_usb_match(device_t, cfdata_t, void *); static void ti_usb_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(ti_usb, sizeof(struct ti_usb_softc), ti_usb_match, ti_usb_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 void ti_usb_init(struct ti_usb_softc *sc) { uint32_t val; int port; val = RD4(sc, UHH_SYSCONFIG); val &= ~(UHH_SYSCONFIG_SIDLEMODE_MASK|UHH_SYSCONFIG_MIDLEMODE_MASK); val |= UHH_SYSCONFIG_MIDLEMODE_SMARTSTANDBY; val |= UHH_SYSCONFIG_CLOCKACTIVITY; val |= UHH_SYSCONFIG_SIDLEMODE_SMARTIDLE; val |= UHH_SYSCONFIG_ENAWAKEUP; val &= ~UHH_SYSCONFIG_AUTOIDLE; WR4(sc, UHH_SYSCONFIG, val); val = RD4(sc, UHH_SYSCONFIG); val = RD4(sc, UHH_HOSTCONFIG); val |= UHH_HOSTCONFIG_ENA_INCR16; val |= UHH_HOSTCONFIG_ENA_INCR8; val |= UHH_HOSTCONFIG_ENA_INCR4; val |= UHH_HOSTCONFIG_APP_START_CLK; val &= ~UHH_HOSTCONFIG_ENA_INCR_ALIGN; for (port = 0; port < TI_USB_NPORTS; port++) { if (sc->sc_portmode[port] == PORT_UNUSED) val &= ~ti_usb_portbits[port][CONNECT_STATUS]; if (sc->sc_portmode[port] == PORT_EHCI_PHY) val &= ~ti_usb_portbits[port][ULPI_BYPASS]; else val |= ti_usb_portbits[port][ULPI_BYPASS]; } WR4(sc, UHH_HOSTCONFIG, val); } static int ti_usb_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_usb_attach(device_t parent, device_t self, void *aux) { struct ti_usb_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; char propname[16]; const char *portmode; int port; 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; } for (port = 0; port < TI_USB_NPORTS; port++) { snprintf(propname, sizeof(propname), "port%d-mode", port + 1); portmode = fdtbus_get_string(phandle, propname); if (portmode == NULL) continue; if (strcmp(portmode, "ehci-phy") == 0) sc->sc_portmode[port] = PORT_EHCI_PHY; else if (strcmp(portmode, "ehci-tll") == 0) sc->sc_portmode[port] = PORT_EHCI_TLL; else if (strcmp(portmode, "ehci-hsic") == 0) sc->sc_portmode[port] = PORT_EHCI_HSIC; if (sc->sc_portmode[port] != PORT_UNUSED) tl_usbtll_enable_port(port); } aprint_naive("\n"); aprint_normal(": OMAP HS USB Host\n"); ti_usb_init(sc); fdt_add_bus(self, phandle, faa); }