tegra_hdaudio.c revision 1.5
1 /* $NetBSD: tegra_hdaudio.c,v 1.5 2015/12/13 17:39:19 jmcneill 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 <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: tegra_hdaudio.c,v 1.5 2015/12/13 17:39:19 jmcneill Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/device.h> 35 #include <sys/intr.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 39 #include <dev/hdaudio/hdaudioreg.h> 40 #include <dev/hdaudio/hdaudiovar.h> 41 42 #include <arm/nvidia/tegra_var.h> 43 #include <arm/nvidia/tegra_pmcreg.h> 44 #include <arm/nvidia/tegra_hdaudioreg.h> 45 46 #include <dev/fdt/fdtvar.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 int sc_phandle; 70 }; 71 72 static void tegra_hdaudio_init(struct tegra_hdaudio_softc *); 73 74 CFATTACH_DECL2_NEW(tegra_hdaudio, sizeof(struct tegra_hdaudio_softc), 75 tegra_hdaudio_match, tegra_hdaudio_attach, tegra_hdaudio_detach, NULL, 76 tegra_hdaudio_rescan, tegra_hdaudio_childdet); 77 78 static int 79 tegra_hdaudio_match(device_t parent, cfdata_t cf, void *aux) 80 { 81 const char * const compatible[] = { "nvidia,tegra124-hda", NULL }; 82 struct fdt_attach_args * const faa = aux; 83 84 return of_match_compatible(faa->faa_phandle, compatible); 85 } 86 87 static void 88 tegra_hdaudio_attach(device_t parent, device_t self, void *aux) 89 { 90 struct tegra_hdaudio_softc * const sc = device_private(self); 91 struct fdt_attach_args * const faa = aux; 92 char intrstr[128]; 93 bus_addr_t addr; 94 bus_size_t size; 95 int error; 96 97 if (fdtbus_get_reg(faa->faa_phandle, 0, &addr, &size) != 0) { 98 aprint_error(": couldn't get registers\n"); 99 return; 100 } 101 102 sc->sc_phandle = faa->faa_phandle; 103 sc->sc_bst = faa->faa_bst; 104 error = bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh); 105 if (error) { 106 aprint_error(": couldn't map %#llx: %d", (uint64_t)addr, error); 107 return; 108 } 109 110 sc->sc.sc_memt = faa->faa_bst; 111 bus_space_subregion(sc->sc.sc_memt, sc->sc_bsh, TEGRA_HDAUDIO_OFFSET, 112 size - TEGRA_HDAUDIO_OFFSET, &sc->sc.sc_memh); 113 sc->sc.sc_memvalid = true; 114 sc->sc.sc_dmat = faa->faa_dmat; 115 sc->sc.sc_flags = HDAUDIO_FLAG_NO_STREAM_RESET; 116 117 aprint_naive("\n"); 118 aprint_normal(": HDA\n"); 119 120 if (!fdtbus_intr_str(faa->faa_phandle, 0, intrstr, sizeof(intrstr))) { 121 aprint_error_dev(self, "failed to decode interrupt\n"); 122 return; 123 } 124 125 sc->sc_ih = fdtbus_intr_establish(faa->faa_phandle, 0, IPL_AUDIO, 0, 126 tegra_hdaudio_intr, sc); 127 if (sc->sc_ih == NULL) { 128 aprint_error_dev(self, "couldn't establish interrupt on %s\n", 129 intrstr); 130 return; 131 } 132 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 133 134 tegra_pmc_power(PMC_PARTID_DISB, true); 135 tegra_car_periph_hda_enable(); 136 tegra_hdaudio_init(sc); 137 138 hdaudio_attach(self, &sc->sc); 139 } 140 141 static void 142 tegra_hdaudio_init(struct tegra_hdaudio_softc *sc) 143 { 144 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_CONFIG_REG, 145 TEGRA_HDA_IFPS_CONFIG_FPCI_EN, 0); 146 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_CMD_REG, 147 TEGRA_HDA_CFG_CMD_ENABLE_SERR | 148 TEGRA_HDA_CFG_CMD_BUS_MASTER | 149 TEGRA_HDA_CFG_CMD_MEM_SPACE | 150 TEGRA_HDA_CFG_CMD_IO_SPACE, 151 TEGRA_HDA_CFG_CMD_DISABLE_INTR); 152 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 153 0xffffffff); 154 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_CFG_BAR0_REG, 155 0x00004000); 156 bus_space_write_4(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_BAR0_REG, 157 TEGRA_HDA_CFG_BAR0_START); 158 tegra_reg_set_clear(sc->sc_bst, sc->sc_bsh, TEGRA_HDA_IFPS_INTR_REG, 159 TEGRA_HDA_IFPS_INTR_EN, 0); 160 } 161 162 static int 163 tegra_hdaudio_detach(device_t self, int flags) 164 { 165 struct tegra_hdaudio_softc * const sc = device_private(self); 166 167 hdaudio_detach(&sc->sc, flags); 168 169 if (sc->sc_ih) { 170 fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih); 171 sc->sc_ih = NULL; 172 } 173 174 sc->sc.sc_memvalid = false; 175 176 return 0; 177 } 178 179 static int 180 tegra_hdaudio_rescan(device_t self, const char *ifattr, const int *locs) 181 { 182 struct tegra_hdaudio_softc * const sc = device_private(self); 183 184 return hdaudio_rescan(&sc->sc, ifattr, locs); 185 } 186 187 static void 188 tegra_hdaudio_childdet(device_t self, device_t child) 189 { 190 struct tegra_hdaudio_softc * const sc = device_private(self); 191 192 hdaudio_childdet(&sc->sc, child); 193 } 194 195 static int 196 tegra_hdaudio_intr(void *priv) 197 { 198 struct tegra_hdaudio_softc * const sc = priv; 199 200 return hdaudio_intr(&sc->sc); 201 } 202
Indexes created Tue Sep 30 07:10:03 GMT 2025