/*- * Copyright (c) 2015 Oleksandr Tymoshenko * Copyright (c) 2011 Ben Gray . * 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. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 #include #include #include #include #include #include #include #include #include #include /* * USB Host Module */ /* UHH */ #define OMAP_USBHOST_UHH_REVISION 0x0000 #define OMAP_USBHOST_UHH_SYSCONFIG 0x0010 #define OMAP_USBHOST_UHH_SYSSTATUS 0x0014 #define OMAP_USBHOST_UHH_HOSTCONFIG 0x0040 #define OMAP_USBHOST_UHH_DEBUG_CSR 0x0044 /* UHH Register Set */ #define UHH_SYSCONFIG_MIDLEMODE_MASK (3UL << 12) #define UHH_SYSCONFIG_MIDLEMODE_SMARTSTANDBY (2UL << 12) #define UHH_SYSCONFIG_MIDLEMODE_NOSTANDBY (1UL << 12) #define UHH_SYSCONFIG_MIDLEMODE_FORCESTANDBY (0UL << 12) #define UHH_SYSCONFIG_CLOCKACTIVITY (1UL << 8) #define UHH_SYSCONFIG_SIDLEMODE_MASK (3UL << 3) #define UHH_SYSCONFIG_SIDLEMODE_SMARTIDLE (2UL << 3) #define UHH_SYSCONFIG_SIDLEMODE_NOIDLE (1UL << 3) #define UHH_SYSCONFIG_SIDLEMODE_FORCEIDLE (0UL << 3) #define UHH_SYSCONFIG_ENAWAKEUP (1UL << 2) #define UHH_SYSCONFIG_SOFTRESET (1UL << 1) #define UHH_SYSCONFIG_AUTOIDLE (1UL << 0) #define UHH_HOSTCONFIG_APP_START_CLK (1UL << 31) #define UHH_HOSTCONFIG_P3_CONNECT_STATUS (1UL << 10) #define UHH_HOSTCONFIG_P2_CONNECT_STATUS (1UL << 9) #define UHH_HOSTCONFIG_P1_CONNECT_STATUS (1UL << 8) #define UHH_HOSTCONFIG_ENA_INCR_ALIGN (1UL << 5) #define UHH_HOSTCONFIG_ENA_INCR16 (1UL << 4) #define UHH_HOSTCONFIG_ENA_INCR8 (1UL << 3) #define UHH_HOSTCONFIG_ENA_INCR4 (1UL << 2) #define UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN (1UL << 1) #define UHH_HOSTCONFIG_P1_ULPI_BYPASS (1UL << 0) /* The following are on rev2 (OMAP44xx) of the EHCI only */ #define UHH_SYSCONFIG_IDLEMODE_MASK (3UL << 2) #define UHH_SYSCONFIG_IDLEMODE_NOIDLE (1UL << 2) #define UHH_SYSCONFIG_STANDBYMODE_MASK (3UL << 4) #define UHH_SYSCONFIG_STANDBYMODE_NOSTDBY (1UL << 4) #define UHH_HOSTCONFIG_P1_MODE_MASK (3UL << 16) #define UHH_HOSTCONFIG_P1_MODE_ULPI_PHY (0UL << 16) #define UHH_HOSTCONFIG_P1_MODE_UTMI_PHY (1UL << 16) #define UHH_HOSTCONFIG_P1_MODE_HSIC (3UL << 16) #define UHH_HOSTCONFIG_P2_MODE_MASK (3UL << 18) #define UHH_HOSTCONFIG_P2_MODE_ULPI_PHY (0UL << 18) #define UHH_HOSTCONFIG_P2_MODE_UTMI_PHY (1UL << 18) #define UHH_HOSTCONFIG_P2_MODE_HSIC (3UL << 18) /* * Values of UHH_REVISION - Note: these are not given in the TRM but taken * from the linux OMAP EHCI driver (thanks guys). It has been verified on * a Panda and Beagle board. */ #define OMAP_UHH_REV1 0x00000010 /* OMAP3 */ #define OMAP_UHH_REV2 0x50700100 /* OMAP4 */ struct omap_uhh_softc { struct simplebus_softc simplebus_sc; device_t sc_dev; /* UHH register set */ struct resource* uhh_mem_res; /* The revision of the HS USB HOST read from UHH_REVISION */ uint32_t uhh_rev; /* The following details are provided by conf hints */ int port_mode[3]; }; static device_attach_t omap_uhh_attach; static device_detach_t omap_uhh_detach; static inline uint32_t omap_uhh_read_4(struct omap_uhh_softc *sc, bus_size_t off) { return bus_read_4(sc->uhh_mem_res, off); } static inline void omap_uhh_write_4(struct omap_uhh_softc *sc, bus_size_t off, uint32_t val) { bus_write_4(sc->uhh_mem_res, off, val); } static int omap_uhh_init(struct omap_uhh_softc *isc) { uint8_t tll_ch_mask; uint32_t reg; int i; /* Enable Clocks for high speed USBHOST */ ti_sysc_clock_enable(device_get_parent(isc->sc_dev)); /* Read the UHH revision */ isc->uhh_rev = omap_uhh_read_4(isc, OMAP_USBHOST_UHH_REVISION); device_printf(isc->sc_dev, "UHH revision 0x%08x\n", isc->uhh_rev); /* FIXME */ #if 0 if (isc->uhh_rev == OMAP_UHH_REV2) { /* For OMAP44xx devices you have to enable the per-port clocks: * PHY_MODE - External ULPI clock * TTL_MODE - Internal UTMI clock * HSIC_MODE - Internal 480Mhz and 60Mhz clocks */ switch(isc->port_mode[0]) { case EHCI_HCD_OMAP_MODE_UNKNOWN: break; case EHCI_HCD_OMAP_MODE_PHY: if (ti_prcm_clk_set_source(USBP1_PHY_CLK, EXT_CLK)) device_printf(isc->sc_dev, "failed to set clock source for port 0\n"); if (ti_prcm_clk_enable(USBP1_PHY_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP1_PHY_CLK source for port 0\n"); break; case EHCI_HCD_OMAP_MODE_TLL: if (ti_prcm_clk_enable(USBP1_UTMI_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP1_PHY_CLK source for port 0\n"); break; case EHCI_HCD_OMAP_MODE_HSIC: if (ti_prcm_clk_enable(USBP1_HSIC_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP1_PHY_CLK source for port 0\n"); break; default: device_printf(isc->sc_dev, "unknown port mode %d for port 0\n", isc->port_mode[0]); } switch(isc->port_mode[1]) { case EHCI_HCD_OMAP_MODE_UNKNOWN: break; case EHCI_HCD_OMAP_MODE_PHY: if (ti_prcm_clk_set_source(USBP2_PHY_CLK, EXT_CLK)) device_printf(isc->sc_dev, "failed to set clock source for port 0\n"); if (ti_prcm_clk_enable(USBP2_PHY_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP2_PHY_CLK source for port 1\n"); break; case EHCI_HCD_OMAP_MODE_TLL: if (ti_prcm_clk_enable(USBP2_UTMI_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP2_UTMI_CLK source for port 1\n"); break; case EHCI_HCD_OMAP_MODE_HSIC: if (ti_prcm_clk_enable(USBP2_HSIC_CLK)) device_printf(isc->sc_dev, "failed to set clock USBP2_HSIC_CLK source for port 1\n"); break; default: device_printf(isc->sc_dev, "unknown port mode %d for port 1\n", isc->port_mode[1]); } } #endif /* Put UHH in SmartIdle/SmartStandby mode */ reg = omap_uhh_read_4(isc, OMAP_USBHOST_UHH_SYSCONFIG); if (isc->uhh_rev == OMAP_UHH_REV1) { reg &= ~(UHH_SYSCONFIG_SIDLEMODE_MASK | UHH_SYSCONFIG_MIDLEMODE_MASK); reg |= (UHH_SYSCONFIG_ENAWAKEUP | UHH_SYSCONFIG_AUTOIDLE | UHH_SYSCONFIG_CLOCKACTIVITY | UHH_SYSCONFIG_SIDLEMODE_SMARTIDLE | UHH_SYSCONFIG_MIDLEMODE_SMARTSTANDBY); } else if (isc->uhh_rev == OMAP_UHH_REV2) { reg &= ~UHH_SYSCONFIG_IDLEMODE_MASK; reg |= UHH_SYSCONFIG_IDLEMODE_NOIDLE; reg &= ~UHH_SYSCONFIG_STANDBYMODE_MASK; reg |= UHH_SYSCONFIG_STANDBYMODE_NOSTDBY; } omap_uhh_write_4(isc, OMAP_USBHOST_UHH_SYSCONFIG, reg); device_printf(isc->sc_dev, "OMAP_UHH_SYSCONFIG: 0x%08x\n", reg); reg = omap_uhh_read_4(isc, OMAP_USBHOST_UHH_HOSTCONFIG); /* Setup ULPI bypass and burst configurations */ reg |= (UHH_HOSTCONFIG_ENA_INCR4 | UHH_HOSTCONFIG_ENA_INCR8 | UHH_HOSTCONFIG_ENA_INCR16); reg &= ~UHH_HOSTCONFIG_ENA_INCR_ALIGN; if (isc->uhh_rev == OMAP_UHH_REV1) { if (isc->port_mode[0] == EHCI_HCD_OMAP_MODE_UNKNOWN) reg &= ~UHH_HOSTCONFIG_P1_CONNECT_STATUS; if (isc->port_mode[1] == EHCI_HCD_OMAP_MODE_UNKNOWN) reg &= ~UHH_HOSTCONFIG_P2_CONNECT_STATUS; if (isc->port_mode[2] == EHCI_HCD_OMAP_MODE_UNKNOWN) reg &= ~UHH_HOSTCONFIG_P3_CONNECT_STATUS; /* Bypass the TLL module for PHY mode operation */ if ((isc->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) || (isc->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) || (isc->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY)) reg &= ~UHH_HOSTCONFIG_P1_ULPI_BYPASS; else reg |= UHH_HOSTCONFIG_P1_ULPI_BYPASS; } else if (isc->uhh_rev == OMAP_UHH_REV2) { reg |= UHH_HOSTCONFIG_APP_START_CLK; /* Clear port mode fields for PHY mode*/ reg &= ~UHH_HOSTCONFIG_P1_MODE_MASK; reg &= ~UHH_HOSTCONFIG_P2_MODE_MASK; if (isc->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) reg |= UHH_HOSTCONFIG_P1_MODE_UTMI_PHY; else if (isc->port_mode[0] == EHCI_HCD_OMAP_MODE_HSIC) reg |= UHH_HOSTCONFIG_P1_MODE_HSIC; if (isc->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) reg |= UHH_HOSTCONFIG_P2_MODE_UTMI_PHY; else if (isc->port_mode[1] == EHCI_HCD_OMAP_MODE_HSIC) reg |= UHH_HOSTCONFIG_P2_MODE_HSIC; } omap_uhh_write_4(isc, OMAP_USBHOST_UHH_HOSTCONFIG, reg); device_printf(isc->sc_dev, "UHH setup done, uhh_hostconfig=0x%08x\n", reg); /* I found the code and comments in the Linux EHCI driver - thanks guys :) * * "An undocumented "feature" in the OMAP3 EHCI controller, causes suspended * ports to be taken out of suspend when the USBCMD.Run/Stop bit is cleared * (for example when we do omap_uhh_bus_suspend). This breaks suspend-resume if * the root-hub is allowed to suspend. Writing 1 to this undocumented * register bit disables this feature and restores normal behavior." */ #if 0 omap_uhh_write_4(isc, OMAP_USBHOST_INSNREG04, OMAP_USBHOST_INSNREG04_DISABLE_UNSUSPEND); #endif tll_ch_mask = 0; for (i = 0; i < OMAP_HS_USB_PORTS; i++) { if (isc->port_mode[i] == EHCI_HCD_OMAP_MODE_TLL) tll_ch_mask |= (1 << i); } if (tll_ch_mask) omap_tll_utmi_enable(tll_ch_mask); return(0); } /** * omap_uhh_fini - shutdown the EHCI controller * @isc: omap ehci device context * * * * LOCKING: * none * * RETURNS: * 0 on success, a negative error code on failure. */ static void omap_uhh_fini(struct omap_uhh_softc *isc) { unsigned long timeout; device_printf(isc->sc_dev, "Stopping TI EHCI USB Controller\n"); /* Set the timeout */ if (hz < 10) timeout = 1; else timeout = (100 * hz) / 1000; /* Reset the UHH, OHCI and EHCI modules */ omap_uhh_write_4(isc, OMAP_USBHOST_UHH_SYSCONFIG, 0x0002); while ((omap_uhh_read_4(isc, OMAP_USBHOST_UHH_SYSSTATUS) & 0x07) == 0x00) { /* Sleep for a tick */ pause("USBRESET", 1); if (timeout-- == 0) { device_printf(isc->sc_dev, "operation timed out\n"); break; } } /* Disable functional and interface clocks for the TLL and HOST modules */ ti_sysc_clock_disable(device_get_parent(isc->sc_dev)); device_printf(isc->sc_dev, "Clock to USB host has been disabled\n"); } int omap_usb_port_mode(device_t dev, int port) { struct omap_uhh_softc *isc; isc = device_get_softc(dev); if ((port < 0) || (port >= OMAP_HS_USB_PORTS)) return (-1); return isc->port_mode[port]; } static int omap_uhh_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_is_compatible(dev, "ti,usbhs-host")) return (ENXIO); device_set_desc(dev, "TI OMAP USB 2.0 Host module"); return (BUS_PROBE_DEFAULT); } static int omap_uhh_attach(device_t dev) { struct omap_uhh_softc *isc = device_get_softc(dev); int err; int rid; int i; phandle_t node; char propname[16]; char *mode; /* save the device */ isc->sc_dev = dev; /* Allocate resource for the UHH register set */ rid = 0; isc->uhh_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (!isc->uhh_mem_res) { device_printf(dev, "Error: Could not map UHH memory\n"); goto error; } node = ofw_bus_get_node(dev); if (node == -1) goto error; /* Get port modes from FDT */ for (i = 0; i < OMAP_HS_USB_PORTS; i++) { isc->port_mode[i] = EHCI_HCD_OMAP_MODE_UNKNOWN; snprintf(propname, sizeof(propname), "port%d-mode", i+1); if (OF_getprop_alloc(node, propname, (void**)&mode) <= 0) continue; if (strcmp(mode, "ehci-phy") == 0) isc->port_mode[i] = EHCI_HCD_OMAP_MODE_PHY; else if (strcmp(mode, "ehci-tll") == 0) isc->port_mode[i] = EHCI_HCD_OMAP_MODE_TLL; else if (strcmp(mode, "ehci-hsic") == 0) isc->port_mode[i] = EHCI_HCD_OMAP_MODE_HSIC; } /* Initialise the ECHI registers */ err = omap_uhh_init(isc); if (err) { device_printf(dev, "Error: could not setup OMAP EHCI, %d\n", err); goto error; } simplebus_init(dev, node); /* * Allow devices to identify. */ bus_generic_probe(dev); /* * Now walk the OFW tree and attach top-level devices. */ for (node = OF_child(node); node > 0; node = OF_peer(node)) simplebus_add_device(dev, node, 0, NULL, -1, NULL); return (bus_generic_attach(dev)); error: omap_uhh_detach(dev); return (ENXIO); } static int omap_uhh_detach(device_t dev) { struct omap_uhh_softc *isc = device_get_softc(dev); /* during module unload there are lots of children leftover */ device_delete_children(dev); if (isc->uhh_mem_res) { bus_release_resource(dev, SYS_RES_MEMORY, 0, isc->uhh_mem_res); isc->uhh_mem_res = NULL; } omap_uhh_fini(isc); return (0); } static device_method_t omap_uhh_methods[] = { /* Device interface */ DEVMETHOD(device_probe, omap_uhh_probe), DEVMETHOD(device_attach, omap_uhh_attach), DEVMETHOD(device_detach, omap_uhh_detach), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; DEFINE_CLASS_1(omap_uhh, omap_uhh_driver, omap_uhh_methods, sizeof(struct omap_uhh_softc), simplebus_driver); DRIVER_MODULE(omap_uhh, simplebus, omap_uhh_driver, 0, 0);