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