tegra_hdaudio.c revision 1.1.2.4
1 /* $NetBSD: tegra_hdaudio.c,v 1.1.2.4 2015/09/22 12:05:38 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "locators.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: tegra_hdaudio.c,v 1.1.2.4 2015/09/22 12:05:38 skrll Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/device.h> 37 #include <sys/intr.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 41 #include <dev/hdaudio/hdaudioreg.h> 42 #include <dev/hdaudio/hdaudiovar.h> 43 44 #include <arm/nvidia/tegra_var.h> 45 #include <arm/nvidia/tegra_pmcreg.h> 46 #include <arm/nvidia/tegra_hdaudioreg.h> 47 48 #define TEGRA_HDAUDIO_OFFSET 0x8000 49 50 #define TEGRA_HDA_IFPS_BAR0_REG 0x0080 51 #define TEGRA_HDA_IFPS_CONFIG_REG 0x0180 52 #define TEGRA_HDA_IFPS_INTR_REG 0x0188 53 #define TEGRA_HDA_CFG_CMD_REG 0x1004 54 #define TEGRA_HDA_CFG_BAR0_REG 0x1010 55 56 static int tegra_hdaudio_match(device_t, cfdata_t, void *); 57 static void tegra_hdaudio_attach(device_t, device_t, void *); 58 static int tegra_hdaudio_detach(device_t, int); 59 static int tegra_hdaudio_rescan(device_t, const char *, const int *); 60 static void tegra_hdaudio_childdet(device_t, device_t); 61 62 static int tegra_hdaudio_intr(void *); 63 64 struct tegra_hdaudio_softc { 65 struct hdaudio_softc sc; 66 bus_space_tag_t sc_bst; 67 bus_space_handle_t sc_bsh; 68 void *sc_ih; 69 }; 70 71 static void tegra_hdaudio_init(struct tegra_hdaudio_softc *); 72 73 CFATTACH_DECL2_NEW(tegra_hdaudio, sizeof(struct tegra_hdaudio_softc), 74 tegra_hdaudio_match, tegra_hdaudio_attach, tegra_hdaudio_detach, NULL, 75 tegra_hdaudio_rescan, tegra_hdaudio_childdet); 76 77 static int 78 tegra_hdaudio_match(device_t parent, cfdata_t cf, void *aux) 79 { 80 return 1; 81 } 82 83 static void 84 tegra_hdaudio_attach(device_t parent, device_t self, void *aux) 85 { 86 struct tegra_hdaudio_softc * const sc = device_private(self); 87 struct tegraio_attach_args * const tio = aux; 88 const struct tegra_locators * const loc = &tio->tio_loc; 89 90 sc->sc_bst = tio->tio_bst; 91 bus_space_subregion(tio->tio_bst, tio->tio_bsh, 92 loc->loc_offset, loc->loc_size, &sc->sc_bsh); 93 94 sc->sc.sc_memt = tio->tio_bst; 95 bus_space_subregion(tio->tio_bst, tio->tio_bsh, 96 loc->loc_offset + TEGRA_HDAUDIO_OFFSET, 97 loc->loc_size - TEGRA_HDAUDIO_OFFSET, &sc->sc.sc_memh); 98 sc->sc.sc_memvalid = true; 99 sc->sc.sc_dmat = tio->tio_dmat; 100 sc->sc.sc_flags = HDAUDIO_FLAG_NO_STREAM_RESET; 101 102 aprint_naive("\n"); 103 aprint_normal(": HDA\n"); 104 105 sc->sc_ih = intr_establish(loc->loc_intr, IPL_AUDIO, IST_LEVEL, 106 tegra_hdaudio_intr, sc); 107 if (sc->sc_ih == NULL) { 108 aprint_error_dev(self, "couldn't establish interrupt %d\n", 109 loc->loc_intr); 110 return; 111 } 112 aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr); 113 114 tegra_pmc_power(PMC_PARTID_DISB, true); 115 tegra_car_periph_hda_enable(); 116 tegra_hdaudio_init(sc); 117 118 hdaudio_attach(self, &sc->sc); 119 } 120 121 static void 122 tegra_hdaudio_init(struct tegra_hdaudio_softc *sc) 123 { 124 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_CONFIG_REG, 125 TEGRA_HDA_IFPS_CONFIG_FPCI_EN, 0); 126 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_CMD_REG, 127 TEGRA_HDA_CFG_CMD_ENABLE_SERR | 128 TEGRA_HDA_CFG_CMD_BUS_MASTER | 129 TEGRA_HDA_CFG_CMD_MEM_SPACE | 130 TEGRA_HDA_CFG_CMD_IO_SPACE, 131 TEGRA_HDA_CFG_CMD_DISABLE_INTR); 132 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 133 0xffffffff); 134 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 135 0x00004000); 136 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_BAR0_REG, 137 TEGRA_HDA_CFG_BAR0_START); 138 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_INTR_REG, 139 TEGRA_HDA_IFPS_INTR_EN, 0); 140 } 141 142 static int 143 tegra_hdaudio_detach(device_t self, int flags) 144 { 145 struct tegra_hdaudio_softc * const sc = device_private(self); 146 147 hdaudio_detach(&sc->sc, flags); 148 149 if (sc->sc_ih) { 150 intr_disestablish(sc->sc_ih); 151 sc->sc_ih = NULL; 152 } 153 154 sc->sc.sc_memvalid = false; 155 156 return 0; 157 } 158 159 static int 160 tegra_hdaudio_rescan(device_t self, const char *ifattr, const int *locs) 161 { 162 struct tegra_hdaudio_softc * const sc = device_private(self); 163 164 return hdaudio_rescan(&sc->sc, ifattr, locs); 165 } 166 167 static void 168 tegra_hdaudio_childdet(device_t self, device_t child) 169 { 170 struct tegra_hdaudio_softc * const sc = device_private(self); 171 172 hdaudio_childdet(&sc->sc, child); 173 } 174 175 static int 176 tegra_hdaudio_intr(void *priv) 177 { 178 struct tegra_hdaudio_softc * const sc = priv; 179 180 return hdaudio_intr(&sc->sc); 181 } 182
Indexes created Fri Oct 31 11:10:07 GMT 2025