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);
43 rsnd_mod_write(mod, SSI_SYS_STATUS0, 0xf << (id * 4));
44 rsnd_mod_write(mod, SSI_SYS_STATUS2, 0xf << (id * 4));
45 rsnd_mod_write(mod, SSI_SYS_STATUS4, 0xf << (id * 4));
46 rsnd_mod_write(mod, SSI_SYS_STATUS6, 0xf << (id * 4));
49 rsnd_mod_write(mod, SSI_SYS_STATUS1, 0xf << 4);
50 rsnd_mod_write(mod, SSI_SYS_STATUS3, 0xf << 4);
51 rsnd_mod_write(mod, SSI_SYS_STATUS5, 0xf << 4);
52 rsnd_mod_write(mod, SSI_SYS_STATUS7, 0xf << 4);
59 rsnd_mod_bset(mod, SSI_MODE0, (1 << id), !use_busif << id);
64 mask1 = (1 << 4) | (1 << 20); /* mask sync bit */
65 mask2 = (1 << 4); /* mask sync bit */
67 if (rsnd_ssi_is_pin_sharing(io)) {
84 mask1 |= 0x3 << shift;
85 val1 = rsnd_rdai_is_clk_master(rdai) ?
86 0x2 << shift : 0x1 << shift;
88 } else if (multi_ssi_slaves) {
93 switch (multi_ssi_slaves) {
94 case 0x0206: /* SSI0/1/2/9 */
95 val2 = (1 << 4) | /* SSI0129 sync */
96 (rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1);
98 case 0x0006: /* SSI0/1/2 */
99 val1 = rsnd_rdai_is_clk_master(rdai) ?
102 if (!val2) /* SSI012 sync */
107 rsnd_mod_bset(mod, SSI_MODE1, mask1, val1);
108 rsnd_mod_bset(mod, SSI_MODE2, mask2, val2);
113 static struct rsnd_mod_ops rsnd_ssiu_ops_gen1 = {
115 .init = rsnd_ssiu_init,
118 static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
119 struct rsnd_dai_stream *io,
120 struct rsnd_priv *priv)
124 ret = rsnd_ssiu_init(mod, io, priv);
128 if (rsnd_runtime_is_ssi_tdm(io)) {
132 * rsnd_ssi_config_init()
134 rsnd_mod_write(mod, SSI_MODE, 0x1);
137 if (rsnd_ssi_use_busif(io)) {
138 rsnd_mod_write(mod, SSI_BUSIF_ADINR,
139 rsnd_get_adinr_bit(mod, io) |
140 (rsnd_io_is_play(io) ?
141 rsnd_runtime_channel_after_ctu(io) :
142 rsnd_runtime_channel_original(io)));
143 rsnd_mod_write(mod, SSI_BUSIF_MODE, 1);
144 rsnd_mod_write(mod, SSI_BUSIF_DALIGN,
145 rsnd_get_dalign(mod, io));
151 static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
152 struct rsnd_dai_stream *io,
153 struct rsnd_priv *priv)
155 if (!rsnd_ssi_use_busif(io))
158 rsnd_mod_write(mod, SSI_CTRL, 0x1);
160 if (rsnd_ssi_multi_slaves_runtime(io))
161 rsnd_mod_write(mod, SSI_CONTROL, 0x1);
166 static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
167 struct rsnd_dai_stream *io,
168 struct rsnd_priv *priv)
170 if (!rsnd_ssi_use_busif(io))
173 rsnd_mod_write(mod, SSI_CTRL, 0);
175 if (rsnd_ssi_multi_slaves_runtime(io))
176 rsnd_mod_write(mod, SSI_CONTROL, 0);
181 static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = {
183 .init = rsnd_ssiu_init_gen2,
184 .start = rsnd_ssiu_start_gen2,
185 .stop = rsnd_ssiu_stop_gen2,
188 static struct rsnd_mod *rsnd_ssiu_mod_get(struct rsnd_priv *priv, int id)
190 if (WARN_ON(id < 0 || id >= rsnd_ssiu_nr(priv)))
193 return rsnd_mod_get((struct rsnd_ssiu *)(priv->ssiu) + id);
196 int rsnd_ssiu_attach(struct rsnd_dai_stream *io,
197 struct rsnd_mod *ssi_mod)
199 struct rsnd_priv *priv = rsnd_io_to_priv(io);
200 struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, rsnd_mod_id(ssi_mod));
202 rsnd_mod_confirm_ssi(ssi_mod);
204 return rsnd_dai_connect(mod, io, mod->type);
207 int rsnd_ssiu_probe(struct rsnd_priv *priv)
209 struct device *dev = rsnd_priv_to_dev(priv);
210 struct rsnd_ssiu *ssiu;
211 static struct rsnd_mod_ops *ops;
214 /* same number to SSI */
216 ssiu = devm_kzalloc(dev, sizeof(*ssiu) * nr, GFP_KERNEL);
223 if (rsnd_is_gen1(priv))
224 ops = &rsnd_ssiu_ops_gen1;
226 ops = &rsnd_ssiu_ops_gen2;
228 for_each_rsnd_ssiu(ssiu, priv, i) {
229 ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu),
230 ops, NULL, rsnd_mod_get_status,
239 void rsnd_ssiu_remove(struct rsnd_priv *priv)
241 struct rsnd_ssiu *ssiu;
244 for_each_rsnd_ssiu(ssiu, priv, i) {
245 rsnd_mod_quit(rsnd_mod_get(ssiu));