/*- * Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org> * Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca> * 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 THE 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 THE 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 <sys/cdefs.h> __FBSDID("$FreeBSD$"); /* * HDMI core module */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/bus.h> #include <sys/rman.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> #include <machine/bus.h> #include <dev/extres/clk/clk.h> #include <dev/videomode/videomode.h> #include <dev/videomode/edidvar.h> #include <dev/hdmi/dwc_hdmi.h> #include "hdmi_if.h" struct dwc_hdmi_fdt_softc { struct dwc_hdmi_softc base; clk_t clk_hdmi; clk_t clk_ahb; phandle_t i2c_xref; }; static struct ofw_compat_data compat_data[] = { { "synopsys,dwc-hdmi", 1 }, { NULL, 0 } }; static device_t dwc_hdmi_fdt_get_i2c_dev(device_t dev) { struct dwc_hdmi_fdt_softc *sc; sc = device_get_softc(dev); if (sc->i2c_xref == 0) return (NULL); return (OF_device_from_xref(sc->i2c_xref)); } static int dwc_hdmi_fdt_detach(device_t dev) { struct dwc_hdmi_fdt_softc *sc; sc = device_get_softc(dev); if (sc->clk_ahb != NULL) clk_release(sc->clk_ahb); if (sc->clk_hdmi != NULL) clk_release(sc->clk_hdmi); if (sc->base.sc_mem_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->base.sc_mem_rid, sc->base.sc_mem_res); return (0); } static int dwc_hdmi_fdt_attach(device_t dev) { struct dwc_hdmi_fdt_softc *sc; phandle_t node, i2c_xref; uint32_t freq; int err; sc = device_get_softc(dev); sc->base.sc_dev = dev; sc->base.sc_get_i2c_dev = dwc_hdmi_fdt_get_i2c_dev; err = 0; /* Allocate memory resources. */ sc->base.sc_mem_rid = 0; sc->base.sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->base.sc_mem_rid, RF_ACTIVE); if (sc->base.sc_mem_res == NULL) { device_printf(dev, "Cannot allocate memory resources\n"); err = ENXIO; goto out; } node = ofw_bus_get_node(dev); if (OF_getencprop(node, "ddc", &i2c_xref, sizeof(i2c_xref)) == -1) sc->i2c_xref = 0; else sc->i2c_xref = i2c_xref; if (OF_getencprop(node, "reg-shift", &sc->base.sc_reg_shift, sizeof(sc->base.sc_reg_shift)) <= 0) sc->base.sc_reg_shift = 0; if (clk_get_by_ofw_name(dev, 0, "hdmi", &sc->clk_hdmi) != 0 || clk_get_by_ofw_name(dev, 0, "ahb", &sc->clk_ahb) != 0) { device_printf(dev, "Cannot get clocks\n"); err = ENXIO; goto out; } if (OF_getencprop(node, "clock-frequency", &freq, sizeof(freq)) > 0) { err = clk_set_freq(sc->clk_hdmi, freq, CLK_SET_ROUND_DOWN); if (err != 0) { device_printf(dev, "Cannot set HDMI clock frequency to %u Hz\n", freq); goto out; } } else device_printf(dev, "HDMI clock frequency not specified\n"); if (clk_enable(sc->clk_hdmi) != 0) { device_printf(dev, "Cannot enable HDMI clock\n"); err = ENXIO; goto out; } if (clk_enable(sc->clk_ahb) != 0) { device_printf(dev, "Cannot enable AHB clock\n"); err = ENXIO; goto out; } return (dwc_hdmi_init(dev)); out: dwc_hdmi_fdt_detach(dev); return (err); } static int dwc_hdmi_fdt_probe(device_t dev) { if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "Synopsys DesignWare HDMI Controller"); return (BUS_PROBE_DEFAULT); } static device_method_t dwc_hdmi_fdt_methods[] = { /* Device interface */ DEVMETHOD(device_probe, dwc_hdmi_fdt_probe), DEVMETHOD(device_attach, dwc_hdmi_fdt_attach), DEVMETHOD(device_detach, dwc_hdmi_fdt_detach), /* HDMI methods */ DEVMETHOD(hdmi_get_edid, dwc_hdmi_get_edid), DEVMETHOD(hdmi_set_videomode, dwc_hdmi_set_videomode), DEVMETHOD_END }; static driver_t dwc_hdmi_fdt_driver = { "dwc_hdmi", dwc_hdmi_fdt_methods, sizeof(struct dwc_hdmi_fdt_softc) }; static devclass_t dwc_hdmi_fdt_devclass; DRIVER_MODULE(dwc_hdmi_fdt, simplebus, dwc_hdmi_fdt_driver, dwc_hdmi_fdt_devclass, 0, 0);