/* $NetBSD: sunxi_dwhdmi.c,v 1.3.6.2 2019/11/25 16:18:40 martin Exp $ */ /*- * Copyright (c) 2019 Jared D. 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. 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 ``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: sunxi_dwhdmi.c,v 1.3.6.2 2019/11/25 16:18:40 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include enum { DWHDMI_PORT_INPUT = 0, DWHDMI_PORT_OUTPUT = 1, }; static const char * const compatible[] = { "allwinner,sun8i-h3-dw-hdmi", "allwinner,sun50i-a64-dw-hdmi", NULL }; struct sunxi_dwhdmi_softc { struct dwhdmi_softc sc_base; int sc_phandle; struct fdtbus_phy *sc_phy; struct fdtbus_regulator *sc_regulator; struct clk *sc_clk; struct fdt_device_ports sc_ports; struct drm_display_mode sc_curmode; }; #define to_sunxi_dwhdmi_softc(x) container_of(x, struct sunxi_dwhdmi_softc, sc_base) static int sunxi_dwhdmi_ep_activate(device_t dev, struct fdt_endpoint *ep, bool activate) { struct sunxi_dwhdmi_softc * const sc = device_private(dev); struct fdt_endpoint *in_ep = fdt_endpoint_remote(ep); struct fdt_endpoint *out_ep, *out_rep; struct drm_encoder *encoder; struct drm_bridge *bridge; int error; if (!activate) return EINVAL; if (fdt_endpoint_port_index(ep) != DWHDMI_PORT_INPUT) return EINVAL; switch (fdt_endpoint_type(in_ep)) { case EP_DRM_ENCODER: encoder = fdt_endpoint_get_data(in_ep); break; case EP_DRM_BRIDGE: bridge = fdt_endpoint_get_data(in_ep); encoder = bridge->encoder; break; default: encoder = NULL; break; } if (encoder == NULL) return EINVAL; if (sc->sc_regulator != NULL) { error = fdtbus_regulator_enable(sc->sc_regulator); if (error != 0) { device_printf(dev, "couldn't enable supply\n"); return error; } } error = dwhdmi_bind(&sc->sc_base, encoder); if (error != 0) return error; out_ep = fdt_endpoint_get_from_index(&sc->sc_ports, DWHDMI_PORT_OUTPUT, 0); if (out_ep != NULL) { /* Ignore downstream connectors, we have our own. */ out_rep = fdt_endpoint_remote(out_ep); if (out_rep != NULL && fdt_endpoint_type(out_rep) == EP_DRM_CONNECTOR) return 0; error = fdt_endpoint_activate(out_ep, activate); if (error != 0) return error; } return 0; } static void * sunxi_dwhdmi_ep_get_data(device_t dev, struct fdt_endpoint *ep) { struct sunxi_dwhdmi_softc * const sc = device_private(dev); return &sc->sc_base.sc_bridge; } static enum drm_connector_status sunxi_dwhdmi_detect(struct dwhdmi_softc *dsc, bool force) { struct sunxi_dwhdmi_softc * const sc = to_sunxi_dwhdmi_softc(dsc); KASSERT(sc->sc_phy != NULL); if (sunxi_hdmiphy_detect(sc->sc_phy, force)) return connector_status_connected; else return connector_status_disconnected; } static void sunxi_dwhdmi_enable(struct dwhdmi_softc *dsc) { struct sunxi_dwhdmi_softc * const sc = to_sunxi_dwhdmi_softc(dsc); int error; KASSERT(sc->sc_phy != NULL); error = fdtbus_phy_enable(sc->sc_phy, true); if (error != 0) { device_printf(dsc->sc_dev, "failed to enable phy: %d\n", error); return; } error = sunxi_hdmiphy_config(sc->sc_phy, &sc->sc_curmode); if (error != 0) device_printf(dsc->sc_dev, "failed to configure phy: %d\n", error); } static void sunxi_dwhdmi_disable(struct dwhdmi_softc *dsc) { struct sunxi_dwhdmi_softc * const sc = to_sunxi_dwhdmi_softc(dsc); int error; KASSERT(sc->sc_phy != NULL); error = fdtbus_phy_enable(sc->sc_phy, false); if (error != 0) device_printf(dsc->sc_dev, "failed to disable phy\n"); } static void sunxi_dwhdmi_mode_set(struct dwhdmi_softc *dsc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct sunxi_dwhdmi_softc * const sc = to_sunxi_dwhdmi_softc(dsc); int error; if (sc->sc_clk != NULL) { error = clk_set_rate(sc->sc_clk, adjusted_mode->clock * 1000); if (error != 0) device_printf(sc->sc_base.sc_dev, "couldn't set pixel clock to %u Hz: %d\n", adjusted_mode->clock * 1000, error); } sc->sc_curmode = *adjusted_mode; } static audio_dai_tag_t sunxi_dwhdmi_dai_get_tag(device_t dev, const void *data, size_t len) { struct sunxi_dwhdmi_softc * const sc = device_private(dev); if (len != 4) return NULL; return &sc->sc_base.sc_dai; } static struct fdtbus_dai_controller_func sunxi_dwhdmi_dai_funcs = { .get_tag = sunxi_dwhdmi_dai_get_tag }; static int sunxi_dwhdmi_match(device_t parent, cfdata_t cf, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void sunxi_dwhdmi_attach(device_t parent, device_t self, void *aux) { struct sunxi_dwhdmi_softc * const sc = device_private(self); struct fdt_attach_args * const faa = aux; prop_dictionary_t prop = device_properties(self); const int phandle = faa->faa_phandle; struct clk *clk_iahb, *clk_isfr, *clk_tmds; struct fdtbus_reset *rst; bool is_disabled; bus_addr_t addr; bus_size_t size; if (prop_dictionary_get_bool(prop, "disabled", &is_disabled) && is_disabled) { aprint_naive("\n"); aprint_normal(": HDMI TX (disabled)\n"); return; } if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } clk_iahb = fdtbus_clock_get(phandle, "iahb"); if (clk_iahb == NULL || clk_enable(clk_iahb) != 0) { aprint_error(": couldn't enable iahb clock\n"); return; } clk_isfr = fdtbus_clock_get(phandle, "isfr"); if (clk_isfr == NULL || clk_enable(clk_isfr) != 0) { aprint_error(": couldn't enable isfr clock\n"); return; } clk_tmds = fdtbus_clock_get(phandle, "tmds"); if (clk_tmds == NULL || clk_enable(clk_tmds) != 0) { aprint_error(": couldn't enable tmds clock\n"); return; } sc->sc_base.sc_dev = self; sc->sc_base.sc_reg_width = 1; sc->sc_base.sc_bst = faa->faa_bst; if (bus_space_map(sc->sc_base.sc_bst, addr, size, 0, &sc->sc_base.sc_bsh) != 0) { aprint_error(": couldn't map registers\n"); return; } sc->sc_base.sc_detect = sunxi_dwhdmi_detect; sc->sc_base.sc_enable = sunxi_dwhdmi_enable; sc->sc_base.sc_disable = sunxi_dwhdmi_disable; sc->sc_base.sc_mode_set = sunxi_dwhdmi_mode_set; sc->sc_base.sc_scl_hcnt = 0xd8; sc->sc_base.sc_scl_lcnt = 0xfe; sc->sc_phandle = faa->faa_phandle; sc->sc_clk = clk_tmds; aprint_naive("\n"); aprint_normal(": HDMI TX\n"); sc->sc_regulator = fdtbus_regulator_acquire(sc->sc_phandle, "hvcc-supply"); sc->sc_phy = fdtbus_phy_get(sc->sc_phandle, "hdmi-phy"); if (sc->sc_phy == NULL) sc->sc_phy = fdtbus_phy_get(sc->sc_phandle, "phy"); if (sc->sc_phy == NULL) { device_printf(self, "couldn't find PHY\n"); return; } rst = fdtbus_reset_get(phandle, "ctrl"); if (rst == NULL || fdtbus_reset_deassert(rst) != 0) { aprint_error_dev(self, "couldn't de-assert reset\n"); return; } sunxi_hdmiphy_init(sc->sc_phy); if (dwhdmi_attach(&sc->sc_base) != 0) { aprint_error_dev(self, "failed to attach driver\n"); return; } sc->sc_ports.dp_ep_activate = sunxi_dwhdmi_ep_activate; sc->sc_ports.dp_ep_get_data = sunxi_dwhdmi_ep_get_data; fdt_ports_register(&sc->sc_ports, self, phandle, EP_DRM_BRIDGE); fdtbus_register_dai_controller(self, phandle, &sunxi_dwhdmi_dai_funcs); } CFATTACH_DECL_NEW(sunxi_dwhdmi, sizeof(struct sunxi_dwhdmi_softc), sunxi_dwhdmi_match, sunxi_dwhdmi_attach, NULL, NULL);