2 * Renesas R-Car SSIU support
4 * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #define SSIU_NAME "ssiu"
18 #define rsnd_ssiu_nr(priv) ((priv)->ssiu_nr)
19 #define for_each_rsnd_ssiu(pos, priv, i) \
21 (i < rsnd_ssiu_nr(priv)) && \
22 ((pos) = ((struct rsnd_ssiu *)(priv)->ssiu + i)); \
25 static int rsnd_ssiu_init(struct rsnd_mod *mod,
26 struct rsnd_dai_stream *io,
27 struct rsnd_priv *priv)
29 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
30 u32 multi_ssi_slaves = rsnd_ssi_multi_slaves_runtime(io);
31 int use_busif = rsnd_ssi_use_busif(io);
32 int id = rsnd_mod_id(mod);
39 rsnd_mod_bset(mod, SSI_MODE0, (1 << id), !use_busif << id);
44 mask1 = (1 << 4) | (1 << 20); /* mask sync bit */
45 mask2 = (1 << 4); /* mask sync bit */
49 * SSI8 pin is sharing with SSI7, nothing to do.
51 } else if (rsnd_ssi_is_pin_sharing(io)) {
68 mask1 |= 0x3 << shift;
69 val1 = rsnd_rdai_is_clk_master(rdai) ?
70 0x2 << shift : 0x1 << shift;
72 } else if (multi_ssi_slaves) {
77 switch (multi_ssi_slaves) {
78 case 0x0206: /* SSI0/1/2/9 */
79 val2 = (1 << 4) | /* SSI0129 sync */
80 (rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1);
82 case 0x0006: /* SSI0/1/2 */
83 val1 = rsnd_rdai_is_clk_master(rdai) ?
86 if (!val2) /* SSI012 sync */
91 rsnd_mod_bset(mod, SSI_MODE1, mask1, val1);
92 rsnd_mod_bset(mod, SSI_MODE2, mask2, val2);
97 static struct rsnd_mod_ops rsnd_ssiu_ops_gen1 = {
99 .init = rsnd_ssiu_init,
102 static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
103 struct rsnd_dai_stream *io,
104 struct rsnd_priv *priv)
108 ret = rsnd_ssiu_init(mod, io, priv);
112 if (rsnd_runtime_is_ssi_tdm(io)) {
116 * rsnd_ssi_config_init()
118 rsnd_mod_write(mod, SSI_MODE, 0x1);
121 if (rsnd_ssi_use_busif(io)) {
122 rsnd_mod_write(mod, SSI_BUSIF_ADINR,
123 rsnd_get_adinr_bit(mod, io) |
124 (rsnd_io_is_play(io) ?
125 rsnd_runtime_channel_after_ctu(io) :
126 rsnd_runtime_channel_original(io)));
127 rsnd_mod_write(mod, SSI_BUSIF_MODE, 1);
128 rsnd_mod_write(mod, SSI_BUSIF_DALIGN,
129 rsnd_get_dalign(mod, io));
135 static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
136 struct rsnd_dai_stream *io,
137 struct rsnd_priv *priv)
139 if (!rsnd_ssi_use_busif(io))
142 rsnd_mod_write(mod, SSI_CTRL, 0x1);
144 if (rsnd_ssi_multi_slaves_runtime(io))
145 rsnd_mod_write(mod, SSI_CONTROL, 0x1);
150 static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
151 struct rsnd_dai_stream *io,
152 struct rsnd_priv *priv)
154 if (!rsnd_ssi_use_busif(io))
157 rsnd_mod_write(mod, SSI_CTRL, 0);
159 if (rsnd_ssi_multi_slaves_runtime(io))
160 rsnd_mod_write(mod, SSI_CONTROL, 0);
165 static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = {
167 .init = rsnd_ssiu_init_gen2,
168 .start = rsnd_ssiu_start_gen2,
169 .stop = rsnd_ssiu_stop_gen2,
172 static struct rsnd_mod *rsnd_ssiu_mod_get(struct rsnd_priv *priv, int id)
174 if (WARN_ON(id < 0 || id >= rsnd_ssiu_nr(priv)))
177 return rsnd_mod_get((struct rsnd_ssiu *)(priv->ssiu) + id);
180 int rsnd_ssiu_attach(struct rsnd_dai_stream *io,
181 struct rsnd_mod *ssi_mod)
183 struct rsnd_priv *priv = rsnd_io_to_priv(io);
184 struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, rsnd_mod_id(ssi_mod));
186 rsnd_mod_confirm_ssi(ssi_mod);
188 return rsnd_dai_connect(mod, io, mod->type);
191 int rsnd_ssiu_probe(struct rsnd_priv *priv)
193 struct device *dev = rsnd_priv_to_dev(priv);
194 struct rsnd_ssiu *ssiu;
195 static struct rsnd_mod_ops *ops;
198 /* same number to SSI */
200 ssiu = devm_kzalloc(dev, sizeof(*ssiu) * nr, GFP_KERNEL);
207 if (rsnd_is_gen1(priv))
208 ops = &rsnd_ssiu_ops_gen1;
210 ops = &rsnd_ssiu_ops_gen2;
212 for_each_rsnd_ssiu(ssiu, priv, i) {
213 ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu),
214 ops, NULL, rsnd_mod_get_status,
223 void rsnd_ssiu_remove(struct rsnd_priv *priv)
225 struct rsnd_ssiu *ssiu;
228 for_each_rsnd_ssiu(ssiu, priv, i) {
229 rsnd_mod_quit(rsnd_mod_get(ssiu));