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(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 */
47 if (rsnd_ssi_is_pin_sharing(io)) {
64 mask1 |= 0x3 << shift;
65 val1 = rsnd_rdai_is_clk_master(rdai) ?
66 0x2 << shift : 0x1 << shift;
68 } else if (multi_ssi_slaves) {
73 switch (multi_ssi_slaves) {
74 case 0x0206: /* SSI0/1/2/9 */
75 val2 = (1 << 4) | /* SSI0129 sync */
76 (rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1);
78 case 0x0006: /* SSI0/1/2 */
79 val1 = rsnd_rdai_is_clk_master(rdai) ?
82 if (!val2) /* SSI012 sync */
87 rsnd_mod_bset(mod, SSI_MODE1, mask1, val1);
88 rsnd_mod_bset(mod, SSI_MODE2, mask2, val2);
93 static struct rsnd_mod_ops rsnd_ssiu_ops_gen1 = {
95 .init = rsnd_ssiu_init,
98 static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
99 struct rsnd_dai_stream *io,
100 struct rsnd_priv *priv)
104 ret = rsnd_ssiu_init(mod, io, priv);
108 if (rsnd_get_slot_width(io) >= 6) {
112 * rsnd_ssi_config_init()
114 rsnd_mod_write(mod, SSI_MODE, 0x1);
117 if (rsnd_ssi_use_busif(io)) {
118 u32 val = rsnd_get_dalign(mod, io);
120 rsnd_mod_write(mod, SSI_BUSIF_ADINR,
121 rsnd_get_adinr_bit(mod, io) |
122 rsnd_get_adinr_chan(mod, io));
123 rsnd_mod_write(mod, SSI_BUSIF_MODE, 1);
124 rsnd_mod_write(mod, SSI_BUSIF_DALIGN, val);
130 static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
131 struct rsnd_dai_stream *io,
132 struct rsnd_priv *priv)
134 if (!rsnd_ssi_use_busif(io))
137 rsnd_mod_write(mod, SSI_CTRL, 0x1);
139 if (rsnd_ssi_multi_slaves(io))
140 rsnd_mod_write(mod, SSI_CONTROL, 0x1);
145 static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
146 struct rsnd_dai_stream *io,
147 struct rsnd_priv *priv)
149 if (!rsnd_ssi_use_busif(io))
152 rsnd_mod_write(mod, SSI_CTRL, 0);
154 if (rsnd_ssi_multi_slaves(io))
155 rsnd_mod_write(mod, SSI_CONTROL, 0);
160 static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = {
162 .init = rsnd_ssiu_init_gen2,
163 .start = rsnd_ssiu_start_gen2,
164 .stop = rsnd_ssiu_stop_gen2,
167 static struct rsnd_mod *rsnd_ssiu_mod_get(struct rsnd_priv *priv, int id)
169 if (WARN_ON(id < 0 || id >= rsnd_ssiu_nr(priv)))
172 return rsnd_mod_get((struct rsnd_ssiu *)(priv->ssiu) + id);
175 int rsnd_ssiu_attach(struct rsnd_dai_stream *io,
176 struct rsnd_mod *ssi_mod)
178 struct rsnd_priv *priv = rsnd_io_to_priv(io);
179 struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, rsnd_mod_id(ssi_mod));
181 rsnd_mod_confirm_ssi(ssi_mod);
183 return rsnd_dai_connect(mod, io, mod->type);
186 int rsnd_ssiu_probe(struct rsnd_priv *priv)
188 struct device *dev = rsnd_priv_to_dev(priv);
189 struct rsnd_ssiu *ssiu;
190 static struct rsnd_mod_ops *ops;
193 /* same number to SSI */
195 ssiu = devm_kzalloc(dev, sizeof(*ssiu) * nr, GFP_KERNEL);
202 if (rsnd_is_gen1(priv))
203 ops = &rsnd_ssiu_ops_gen1;
205 ops = &rsnd_ssiu_ops_gen2;
207 for_each_rsnd_ssiu(ssiu, priv, i) {
208 ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu),
209 ops, NULL, rsnd_mod_get_status,
218 void rsnd_ssiu_remove(struct rsnd_priv *priv)
220 struct rsnd_ssiu *ssiu;
223 for_each_rsnd_ssiu(ssiu, priv, i) {
224 rsnd_mod_quit(rsnd_mod_get(ssiu));