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 */
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 rsnd_mod_write(mod, SSI_BUSIF_ADINR,
119 rsnd_get_adinr_bit(mod, io) |
120 rsnd_get_adinr_chan(mod, io));
121 rsnd_mod_write(mod, SSI_BUSIF_MODE, 1);
122 rsnd_mod_write(mod, SSI_BUSIF_DALIGN,
123 rsnd_get_dalign(mod, io));
129 static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
130 struct rsnd_dai_stream *io,
131 struct rsnd_priv *priv)
133 if (!rsnd_ssi_use_busif(io))
136 rsnd_mod_write(mod, SSI_CTRL, 0x1);
138 if (rsnd_ssi_multi_slaves_runtime(io))
139 rsnd_mod_write(mod, SSI_CONTROL, 0x1);
144 static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
145 struct rsnd_dai_stream *io,
146 struct rsnd_priv *priv)
148 if (!rsnd_ssi_use_busif(io))
151 rsnd_mod_write(mod, SSI_CTRL, 0);
153 if (rsnd_ssi_multi_slaves_runtime(io))
154 rsnd_mod_write(mod, SSI_CONTROL, 0);
159 static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = {
161 .init = rsnd_ssiu_init_gen2,
162 .start = rsnd_ssiu_start_gen2,
163 .stop = rsnd_ssiu_stop_gen2,
166 static struct rsnd_mod *rsnd_ssiu_mod_get(struct rsnd_priv *priv, int id)
168 if (WARN_ON(id < 0 || id >= rsnd_ssiu_nr(priv)))
171 return rsnd_mod_get((struct rsnd_ssiu *)(priv->ssiu) + id);
174 int rsnd_ssiu_attach(struct rsnd_dai_stream *io,
175 struct rsnd_mod *ssi_mod)
177 struct rsnd_priv *priv = rsnd_io_to_priv(io);
178 struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, rsnd_mod_id(ssi_mod));
180 rsnd_mod_confirm_ssi(ssi_mod);
182 return rsnd_dai_connect(mod, io, mod->type);
185 int rsnd_ssiu_probe(struct rsnd_priv *priv)
187 struct device *dev = rsnd_priv_to_dev(priv);
188 struct rsnd_ssiu *ssiu;
189 static struct rsnd_mod_ops *ops;
192 /* same number to SSI */
194 ssiu = devm_kzalloc(dev, sizeof(*ssiu) * nr, GFP_KERNEL);
201 if (rsnd_is_gen1(priv))
202 ops = &rsnd_ssiu_ops_gen1;
204 ops = &rsnd_ssiu_ops_gen2;
206 for_each_rsnd_ssiu(ssiu, priv, i) {
207 ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu),
208 ops, NULL, rsnd_mod_get_status,
217 void rsnd_ssiu_remove(struct rsnd_priv *priv)
219 struct rsnd_ssiu *ssiu;
222 for_each_rsnd_ssiu(ssiu, priv, i) {
223 rsnd_mod_quit(rsnd_mod_get(ssiu));