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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | // SPDX-License-Identifier: GPL-2.0 // // Renesas R-Car CMD support // // Copyright (C) 2015 Renesas Solutions Corp. // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> #include "rsnd.h" struct rsnd_cmd { struct rsnd_mod mod; }; #define CMD_NAME "cmd" #define rsnd_cmd_nr(priv) ((priv)->cmd_nr) #define for_each_rsnd_cmd(pos, priv, i) \ for ((i) = 0; \ ((i) < rsnd_cmd_nr(priv)) && \ ((pos) = (struct rsnd_cmd *)(priv)->cmd + i); \ i++) static int rsnd_cmd_init(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) { struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); struct rsnd_mod *mix = rsnd_io_to_mod_mix(io); struct device *dev = rsnd_priv_to_dev(priv); u32 data; static const u32 path[] = { [1] = 1 << 0, [5] = 1 << 8, [6] = 1 << 12, [9] = 1 << 15, }; if (!mix && !dvc) return 0; if (ARRAY_SIZE(path) < rsnd_mod_id(mod) + 1) return -ENXIO; if (mix) { struct rsnd_dai *rdai; int i; /* * it is assuming that integrater is well understanding about * data path. Here doesn't check impossible connection, * like src2 + src5 */ data = 0; for_each_rsnd_dai(rdai, priv, i) { struct rsnd_dai_stream *tio = &rdai->playback; struct rsnd_mod *src = rsnd_io_to_mod_src(tio); if (mix == rsnd_io_to_mod_mix(tio)) data |= path[rsnd_mod_id(src)]; tio = &rdai->capture; src = rsnd_io_to_mod_src(tio); if (mix == rsnd_io_to_mod_mix(tio)) data |= path[rsnd_mod_id(src)]; } } else { struct rsnd_mod *src = rsnd_io_to_mod_src(io); static const u8 cmd_case[] = { [0] = 0x3, [1] = 0x3, [2] = 0x4, [3] = 0x1, [4] = 0x2, [5] = 0x4, [6] = 0x1, [9] = 0x2, }; if (unlikely(!src)) return -EIO; data = path[rsnd_mod_id(src)] | cmd_case[rsnd_mod_id(src)] << 16; } dev_dbg(dev, "ctu/mix path = 0x%08x\n", data); rsnd_mod_write(mod, CMD_ROUTE_SLCT, data); rsnd_mod_write(mod, CMD_BUSIF_MODE, rsnd_get_busif_shift(io, mod) | 1); rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io)); rsnd_adg_set_cmd_timsel_gen2(mod, io); return 0; } static int rsnd_cmd_start(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) { rsnd_mod_write(mod, CMD_CTRL, 0x10); return 0; } static int rsnd_cmd_stop(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) { rsnd_mod_write(mod, CMD_CTRL, 0); return 0; } #ifdef CONFIG_DEBUG_FS static void rsnd_cmd_debug_info(struct seq_file *m, struct rsnd_dai_stream *io, struct rsnd_mod *mod) { rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU, 0x180 + rsnd_mod_id_raw(mod) * 0x20, 0x30); } #define DEBUG_INFO .debug_info = rsnd_cmd_debug_info #else #define DEBUG_INFO #endif static struct rsnd_mod_ops rsnd_cmd_ops = { .name = CMD_NAME, .init = rsnd_cmd_init, .start = rsnd_cmd_start, .stop = rsnd_cmd_stop, .get_status = rsnd_mod_get_status, DEBUG_INFO }; static struct rsnd_mod *rsnd_cmd_mod_get(struct rsnd_priv *priv, int id) { if (WARN_ON(id < 0 || id >= rsnd_cmd_nr(priv))) id = 0; return rsnd_mod_get((struct rsnd_cmd *)(priv->cmd) + id); } int rsnd_cmd_attach(struct rsnd_dai_stream *io, int id) { struct rsnd_priv *priv = rsnd_io_to_priv(io); struct rsnd_mod *mod = rsnd_cmd_mod_get(priv, id); return rsnd_dai_connect(mod, io, mod->type); } int rsnd_cmd_probe(struct rsnd_priv *priv) { struct device *dev = rsnd_priv_to_dev(priv); struct rsnd_cmd *cmd; int i, nr; /* This driver doesn't support Gen1 at this point */ if (rsnd_is_gen1(priv)) return 0; /* same number as DVC */ nr = priv->dvc_nr; if (!nr) return 0; cmd = devm_kcalloc(dev, nr, sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; priv->cmd_nr = nr; priv->cmd = cmd; for_each_rsnd_cmd(cmd, priv, i) { int ret = rsnd_mod_init(priv, rsnd_mod_get(cmd), &rsnd_cmd_ops, NULL, RSND_MOD_CMD, i); if (ret) return ret; } return 0; } void rsnd_cmd_remove(struct rsnd_priv *priv) { struct rsnd_cmd *cmd; int i; for_each_rsnd_cmd(cmd, priv, i) { rsnd_mod_quit(rsnd_mod_get(cmd)); } } |