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 rsnd_mod *src = rsnd_io_to_mod_src(io); 33 struct device *dev = rsnd_priv_to_dev(priv); 34 u32 data; 35 36 if (!mix && !dvc) 37 return 0; 38 39 if (mix) { 40 struct rsnd_dai *rdai; 41 int i; 42 u32 path[] = { 43 [0] = 0, 44 [1] = 1 << 0, 45 [2] = 0, 46 [3] = 0, 47 [4] = 0, 48 [5] = 1 << 8 49 }; 50 51 /* 52 * it is assuming that integrater is well understanding about 53 * data path. Here doesn't check impossible connection, 54 * like src2 + src5 55 */ 56 data = 0; 57 for_each_rsnd_dai(rdai, priv, i) { 58 io = &rdai->playback; 59 if (mix == rsnd_io_to_mod_mix(io)) 60 data |= path[rsnd_mod_id(src)]; 61 62 io = &rdai->capture; 63 if (mix == rsnd_io_to_mod_mix(io)) 64 data |= path[rsnd_mod_id(src)]; 65 } 66 67 } else { 68 u32 path[] = { 69 [0] = 0x30000, 70 [1] = 0x30001, 71 [2] = 0x40000, 72 [3] = 0x10000, 73 [4] = 0x20000, 74 [5] = 0x40100 75 }; 76 77 data = path[rsnd_mod_id(src)]; 78 } 79 80 dev_dbg(dev, "ctu/mix path = 0x%08x", data); 81 82 rsnd_mod_write(mod, CMD_ROUTE_SLCT, data); 83 rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io)); 84 85 rsnd_adg_set_cmd_timsel_gen2(mod, io); 86 87 return 0; 88 } 89 90 static int rsnd_cmd_start(struct rsnd_mod *mod, 91 struct rsnd_dai_stream *io, 92 struct rsnd_priv *priv) 93 { 94 rsnd_mod_write(mod, CMD_CTRL, 0x10); 95 96 return 0; 97 } 98 99 static int rsnd_cmd_stop(struct rsnd_mod *mod, 100 struct rsnd_dai_stream *io, 101 struct rsnd_priv *priv) 102 { 103 rsnd_mod_write(mod, CMD_CTRL, 0); 104 105 return 0; 106 } 107 108 static struct rsnd_mod_ops rsnd_cmd_ops = { 109 .name = CMD_NAME, 110 .init = rsnd_cmd_init, 111 .start = rsnd_cmd_start, 112 .stop = rsnd_cmd_stop, 113 }; 114 115 int rsnd_cmd_attach(struct rsnd_dai_stream *io, int id) 116 { 117 struct rsnd_priv *priv = rsnd_io_to_priv(io); 118 struct rsnd_mod *mod = rsnd_cmd_mod_get(priv, id); 119 120 return rsnd_dai_connect(mod, io, mod->type); 121 } 122 123 struct rsnd_mod *rsnd_cmd_mod_get(struct rsnd_priv *priv, int id) 124 { 125 if (WARN_ON(id < 0 || id >= rsnd_cmd_nr(priv))) 126 id = 0; 127 128 return rsnd_mod_get((struct rsnd_cmd *)(priv->cmd) + id); 129 } 130 131 int rsnd_cmd_probe(struct rsnd_priv *priv) 132 { 133 struct device *dev = rsnd_priv_to_dev(priv); 134 struct rsnd_cmd *cmd; 135 int i, nr, ret; 136 137 /* This driver doesn't support Gen1 at this point */ 138 if (rsnd_is_gen1(priv)) 139 return 0; 140 141 /* same number as DVC */ 142 nr = priv->dvc_nr; 143 if (!nr) 144 return 0; 145 146 cmd = devm_kzalloc(dev, sizeof(*cmd) * nr, GFP_KERNEL); 147 if (!cmd) 148 return -ENOMEM; 149 150 priv->cmd_nr = nr; 151 priv->cmd = cmd; 152 153 for_each_rsnd_cmd(cmd, priv, i) { 154 ret = rsnd_mod_init(priv, rsnd_mod_get(cmd), 155 &rsnd_cmd_ops, NULL, RSND_MOD_CMD, i); 156 if (ret) 157 return ret; 158 } 159 160 return 0; 161 } 162 163 void rsnd_cmd_remove(struct rsnd_priv *priv) 164 { 165 struct rsnd_cmd *cmd; 166 int i; 167 168 for_each_rsnd_cmd(cmd, priv, i) { 169 rsnd_mod_quit(rsnd_mod_get(cmd)); 170 } 171 } 172