/* $NetBSD: tegra_hdaudio.c,v 1.15 2021/01/27 03:10:19 thorpej Exp $ */ /*- * Copyright (c) 2015 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: tegra_hdaudio.c,v 1.15 2021/01/27 03:10:19 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #define TEGRA_HDAUDIO_OFFSET 0x8000 #define TEGRA_HDA_IFPS_BAR0_REG 0x0080 #define TEGRA_HDA_IFPS_CONFIG_REG 0x0180 #define TEGRA_HDA_IFPS_INTR_REG 0x0188 #define TEGRA_HDA_CFG_CMD_REG 0x1004 #define TEGRA_HDA_CFG_BAR0_REG 0x1010 static int tegra_hdaudio_match(device_t, cfdata_t, void *); static void tegra_hdaudio_attach(device_t, device_t, void *); static int tegra_hdaudio_detach(device_t, int); static int tegra_hdaudio_rescan(device_t, const char *, const int *); static void tegra_hdaudio_childdet(device_t, device_t); static int tegra_hdaudio_intr(void *); struct tegra_hdaudio_softc { struct hdaudio_softc sc; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; void *sc_ih; int sc_phandle; struct clk *sc_clk_hda; struct clk *sc_clk_hda2hdmi; struct clk *sc_clk_hda2codec_2x; struct fdtbus_reset *sc_rst_hda; struct fdtbus_reset *sc_rst_hda2hdmi; struct fdtbus_reset *sc_rst_hda2codec_2x; }; static int tegra_hdaudio_init_clocks(struct tegra_hdaudio_softc *); static void tegra_hdaudio_init(struct tegra_hdaudio_softc *); CFATTACH_DECL2_NEW(tegra_hdaudio, sizeof(struct tegra_hdaudio_softc), tegra_hdaudio_match, tegra_hdaudio_attach, tegra_hdaudio_detach, NULL, tegra_hdaudio_rescan, tegra_hdaudio_childdet); static const struct device_compatible_entry compat_data[] = { { .compat = "nvidia,tegra210-hda" }, { .compat = "nvidia,tegra124-hda" }, DEVICE_COMPAT_EOL }; static int tegra_hdaudio_match(device_t parent, cfdata_t cf, void *aux) { struct fdt_attach_args * const faa = aux; return of_compatible_match(faa->faa_phandle, compat_data); } static void tegra_hdaudio_attach(device_t parent, device_t self, void *aux) { struct tegra_hdaudio_softc * const sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; char intrstr[128]; bus_addr_t addr; bus_size_t size; int error; if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } sc->sc_clk_hda = fdtbus_clock_get(phandle, "hda"); if (sc->sc_clk_hda == NULL) { aprint_error(": couldn't get clock hda\n"); return; } sc->sc_clk_hda2hdmi = fdtbus_clock_get(phandle, "hda2hdmi"); if (sc->sc_clk_hda2hdmi == NULL) { aprint_error(": couldn't get clock hda2hdmi\n"); return; } sc->sc_clk_hda2codec_2x = fdtbus_clock_get(phandle, "hda2codec_2x"); if (sc->sc_clk_hda2codec_2x == NULL) { aprint_error(": couldn't get clock hda2codec_2x\n"); return; } sc->sc_rst_hda = fdtbus_reset_get(phandle, "hda"); if (sc->sc_rst_hda == NULL) { aprint_error(": couldn't get reset hda\n"); return; } sc->sc_rst_hda2hdmi = fdtbus_reset_get(phandle, "hda2hdmi"); if (sc->sc_rst_hda2hdmi == NULL) { aprint_error(": couldn't get reset hda2hdmi\n"); return; } sc->sc_rst_hda2codec_2x = fdtbus_reset_get(phandle, "hda2codec_2x"); if (sc->sc_rst_hda2codec_2x == NULL) { aprint_error(": couldn't get reset hda2codec_2x\n"); return; } sc->sc_phandle = phandle; sc->sc_bst = faa->faa_bst; error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh); if (error) { aprint_error(": couldn't map %#" PRIxBUSADDR ": %d", addr, error); return; } sc->sc.sc_dev = self; sc->sc.sc_memt = faa->faa_bst; bus_space_subregion(sc->sc.sc_memt, sc->sc_bsh, TEGRA_HDAUDIO_OFFSET, size - TEGRA_HDAUDIO_OFFSET, &sc->sc.sc_memh); sc->sc.sc_memvalid = true; sc->sc.sc_dmat = faa->faa_dmat; sc->sc.sc_flags = HDAUDIO_FLAG_32BIT; aprint_naive("\n"); aprint_normal(": HDA\n"); if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { aprint_error_dev(self, "failed to decode interrupt\n"); return; } sc->sc_ih = fdtbus_intr_establish_xname(phandle, 0, IPL_AUDIO, 0, tegra_hdaudio_intr, sc, device_xname(self)); if (sc->sc_ih == NULL) { aprint_error_dev(self, "couldn't establish interrupt on %s\n", intrstr); return; } aprint_normal_dev(self, "interrupting on %s\n", intrstr); tegra_pmc_power(PMC_PARTID_DISB, true); if (tegra_hdaudio_init_clocks(sc) != 0) return; tegra_hdaudio_init(sc); hdaudio_attach(self, &sc->sc); } static int tegra_hdaudio_init_clocks(struct tegra_hdaudio_softc *sc) { device_t self = sc->sc.sc_dev; int error; /* Assert resets */ fdtbus_reset_assert(sc->sc_rst_hda); fdtbus_reset_assert(sc->sc_rst_hda2hdmi); fdtbus_reset_assert(sc->sc_rst_hda2codec_2x); /* Set hda to 48MHz and enable it */ error = clk_set_rate(sc->sc_clk_hda, 48000000); if (error) { aprint_error_dev(self, "couldn't set hda frequency: %d\n", error); return error; } error = clk_enable(sc->sc_clk_hda); if (error) { aprint_error_dev(self, "couldn't enable clock hda: %d\n", error); return error; } /* Enable hda2hdmi clock */ error = clk_enable(sc->sc_clk_hda2hdmi); if (error) { aprint_error_dev(self, "couldn't enable clock hda2hdmi: %d\n", error); return error; } /* Set hda2codec_2x to 48MHz and enable it */ error = clk_set_rate(sc->sc_clk_hda2codec_2x, 48000000); if (error) { aprint_error_dev(self, "couldn't set clock hda2codec_2x frequency: %d\n", error); return error; } error = clk_enable(sc->sc_clk_hda2codec_2x); if (error) { aprint_error_dev(self, "couldn't enable clock hda2codec_2x: %d\n", error); return error; } /* De-assert resets */ fdtbus_reset_deassert(sc->sc_rst_hda); fdtbus_reset_deassert(sc->sc_rst_hda2hdmi); fdtbus_reset_deassert(sc->sc_rst_hda2codec_2x); return 0; } static void tegra_hdaudio_init(struct tegra_hdaudio_softc *sc) { tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_CONFIG_REG, TEGRA_HDA_IFPS_CONFIG_FPCI_EN, 0); tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_CMD_REG, TEGRA_HDA_CFG_CMD_ENABLE_SERR | TEGRA_HDA_CFG_CMD_BUS_MASTER | TEGRA_HDA_CFG_CMD_MEM_SPACE | TEGRA_HDA_CFG_CMD_IO_SPACE, TEGRA_HDA_CFG_CMD_DISABLE_INTR); bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 0xffffffff); bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 0x00004000); bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_BAR0_REG, TEGRA_HDA_CFG_BAR0_START); tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_INTR_REG, TEGRA_HDA_IFPS_INTR_EN, 0); } static int tegra_hdaudio_detach(device_t self, int flags) { struct tegra_hdaudio_softc * const sc = device_private(self); hdaudio_detach(&sc->sc, flags); if (sc->sc_ih) { fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih); sc->sc_ih = NULL; } sc->sc.sc_memvalid = false; return 0; } static int tegra_hdaudio_rescan(device_t self, const char *ifattr, const int *locs) { struct tegra_hdaudio_softc * const sc = device_private(self); return hdaudio_rescan(&sc->sc, ifattr, locs); } static void tegra_hdaudio_childdet(device_t self, device_t child) { struct tegra_hdaudio_softc * const sc = device_private(self); hdaudio_childdet(&sc->sc, child); } static int tegra_hdaudio_intr(void *priv) { struct tegra_hdaudio_softc * const sc = priv; return hdaudio_intr(&sc->sc); }