]>
Commit | Line | Data |
---|---|---|
c7f69ab5 KM |
1 | /* |
2 | * Renesas R-Car SSIU support | |
3 | * | |
4 | * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
5 | * | |
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. | |
9 | */ | |
10 | #include "rsnd.h" | |
11 | ||
12 | #define SSIU_NAME "ssiu" | |
13 | ||
14 | struct rsnd_ssiu { | |
15 | struct rsnd_mod mod; | |
16 | }; | |
17 | ||
18 | #define rsnd_ssiu_nr(priv) ((priv)->ssiu_nr) | |
19 | #define for_each_rsnd_ssiu(pos, priv, i) \ | |
20 | for (i = 0; \ | |
21 | (i < rsnd_ssiu_nr(priv)) && \ | |
22 | ((pos) = ((struct rsnd_ssiu *)(priv)->ssiu + i)); \ | |
23 | i++) | |
24 | ||
25 | static int rsnd_ssiu_init(struct rsnd_mod *mod, | |
26 | struct rsnd_dai_stream *io, | |
27 | struct rsnd_priv *priv) | |
28 | { | |
29 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
4f5c634d | 30 | u32 multi_ssi_slaves = rsnd_ssi_multi_slaves_runtime(io); |
c7f69ab5 KM |
31 | int use_busif = rsnd_ssi_use_busif(io); |
32 | int id = rsnd_mod_id(mod); | |
b4c83b17 KM |
33 | u32 mask1, val1; |
34 | u32 mask2, val2; | |
c7f69ab5 | 35 | |
814efe3e KM |
36 | /* clear status */ |
37 | switch (id) { | |
38 | case 0: | |
39 | case 1: | |
40 | case 2: | |
41 | case 3: | |
42 | case 4: | |
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)); | |
47 | break; | |
48 | case 9: | |
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); | |
53 | break; | |
54 | } | |
55 | ||
c7f69ab5 KM |
56 | /* |
57 | * SSI_MODE0 | |
58 | */ | |
59 | rsnd_mod_bset(mod, SSI_MODE0, (1 << id), !use_busif << id); | |
60 | ||
61 | /* | |
62 | * SSI_MODE1 | |
63 | */ | |
b4c83b17 KM |
64 | mask1 = (1 << 4) | (1 << 20); /* mask sync bit */ |
65 | mask2 = (1 << 4); /* mask sync bit */ | |
66 | val1 = val2 = 0; | |
4b30eebf KM |
67 | if (id == 8) { |
68 | /* | |
69 | * SSI8 pin is sharing with SSI7, nothing to do. | |
70 | */ | |
71 | } else if (rsnd_ssi_is_pin_sharing(io)) { | |
c7f69ab5 KM |
72 | int shift = -1; |
73 | ||
74 | switch (id) { | |
75 | case 1: | |
76 | shift = 0; | |
77 | break; | |
78 | case 2: | |
79 | shift = 2; | |
80 | break; | |
81 | case 4: | |
82 | shift = 16; | |
83 | break; | |
b4c83b17 KM |
84 | default: |
85 | return -EINVAL; | |
c7f69ab5 KM |
86 | } |
87 | ||
b4c83b17 KM |
88 | mask1 |= 0x3 << shift; |
89 | val1 = rsnd_rdai_is_clk_master(rdai) ? | |
90 | 0x2 << shift : 0x1 << shift; | |
91 | ||
92 | } else if (multi_ssi_slaves) { | |
93 | ||
94 | mask2 |= 0x00000007; | |
95 | mask1 |= 0x0000000f; | |
96 | ||
97 | switch (multi_ssi_slaves) { | |
98 | case 0x0206: /* SSI0/1/2/9 */ | |
99 | val2 = (1 << 4) | /* SSI0129 sync */ | |
8012c983 | 100 | (rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1); |
b4c83b17 KM |
101 | /* fall through */ |
102 | case 0x0006: /* SSI0/1/2 */ | |
103 | val1 = rsnd_rdai_is_clk_master(rdai) ? | |
104 | 0xa : 0x5; | |
105 | ||
106 | if (!val2) /* SSI012 sync */ | |
107 | val1 |= (1 << 4); | |
108 | } | |
c7f69ab5 KM |
109 | } |
110 | ||
b4c83b17 KM |
111 | rsnd_mod_bset(mod, SSI_MODE1, mask1, val1); |
112 | rsnd_mod_bset(mod, SSI_MODE2, mask2, val2); | |
113 | ||
c7f69ab5 KM |
114 | return 0; |
115 | } | |
116 | ||
117 | static struct rsnd_mod_ops rsnd_ssiu_ops_gen1 = { | |
118 | .name = SSIU_NAME, | |
119 | .init = rsnd_ssiu_init, | |
120 | }; | |
121 | ||
122 | static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod, | |
123 | struct rsnd_dai_stream *io, | |
124 | struct rsnd_priv *priv) | |
125 | { | |
126 | int ret; | |
127 | ||
128 | ret = rsnd_ssiu_init(mod, io, priv); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
eed76bb8 | 132 | if (rsnd_runtime_is_ssi_tdm(io)) { |
186fadc1 KM |
133 | /* |
134 | * TDM Extend Mode | |
135 | * see | |
136 | * rsnd_ssi_config_init() | |
137 | */ | |
138 | rsnd_mod_write(mod, SSI_MODE, 0x1); | |
139 | } | |
140 | ||
c7f69ab5 | 141 | if (rsnd_ssi_use_busif(io)) { |
c7f69ab5 | 142 | rsnd_mod_write(mod, SSI_BUSIF_ADINR, |
c45f7263 | 143 | rsnd_get_adinr_bit(mod, io) | |
eed76bb8 KM |
144 | (rsnd_io_is_play(io) ? |
145 | rsnd_runtime_channel_after_ctu(io) : | |
146 | rsnd_runtime_channel_original(io))); | |
c7f69ab5 | 147 | rsnd_mod_write(mod, SSI_BUSIF_MODE, 1); |
135bb7d5 KM |
148 | rsnd_mod_write(mod, SSI_BUSIF_DALIGN, |
149 | rsnd_get_dalign(mod, io)); | |
c7f69ab5 KM |
150 | } |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
155 | static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod, | |
156 | struct rsnd_dai_stream *io, | |
157 | struct rsnd_priv *priv) | |
158 | { | |
b4c83b17 KM |
159 | if (!rsnd_ssi_use_busif(io)) |
160 | return 0; | |
161 | ||
162 | rsnd_mod_write(mod, SSI_CTRL, 0x1); | |
163 | ||
4f5c634d | 164 | if (rsnd_ssi_multi_slaves_runtime(io)) |
b4c83b17 | 165 | rsnd_mod_write(mod, SSI_CONTROL, 0x1); |
c7f69ab5 KM |
166 | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod, | |
171 | struct rsnd_dai_stream *io, | |
172 | struct rsnd_priv *priv) | |
173 | { | |
b4c83b17 KM |
174 | if (!rsnd_ssi_use_busif(io)) |
175 | return 0; | |
176 | ||
177 | rsnd_mod_write(mod, SSI_CTRL, 0); | |
178 | ||
4f5c634d | 179 | if (rsnd_ssi_multi_slaves_runtime(io)) |
b4c83b17 | 180 | rsnd_mod_write(mod, SSI_CONTROL, 0); |
c7f69ab5 KM |
181 | |
182 | return 0; | |
183 | } | |
184 | ||
185 | static struct rsnd_mod_ops rsnd_ssiu_ops_gen2 = { | |
186 | .name = SSIU_NAME, | |
187 | .init = rsnd_ssiu_init_gen2, | |
188 | .start = rsnd_ssiu_start_gen2, | |
189 | .stop = rsnd_ssiu_stop_gen2, | |
190 | }; | |
191 | ||
192 | static struct rsnd_mod *rsnd_ssiu_mod_get(struct rsnd_priv *priv, int id) | |
193 | { | |
194 | if (WARN_ON(id < 0 || id >= rsnd_ssiu_nr(priv))) | |
195 | id = 0; | |
196 | ||
197 | return rsnd_mod_get((struct rsnd_ssiu *)(priv->ssiu) + id); | |
198 | } | |
199 | ||
200 | int rsnd_ssiu_attach(struct rsnd_dai_stream *io, | |
201 | struct rsnd_mod *ssi_mod) | |
202 | { | |
203 | struct rsnd_priv *priv = rsnd_io_to_priv(io); | |
204 | struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, rsnd_mod_id(ssi_mod)); | |
205 | ||
206 | rsnd_mod_confirm_ssi(ssi_mod); | |
207 | ||
208 | return rsnd_dai_connect(mod, io, mod->type); | |
209 | } | |
210 | ||
2ea6b074 | 211 | int rsnd_ssiu_probe(struct rsnd_priv *priv) |
c7f69ab5 KM |
212 | { |
213 | struct device *dev = rsnd_priv_to_dev(priv); | |
214 | struct rsnd_ssiu *ssiu; | |
215 | static struct rsnd_mod_ops *ops; | |
216 | int i, nr, ret; | |
217 | ||
218 | /* same number to SSI */ | |
219 | nr = priv->ssi_nr; | |
220 | ssiu = devm_kzalloc(dev, sizeof(*ssiu) * nr, GFP_KERNEL); | |
221 | if (!ssiu) | |
222 | return -ENOMEM; | |
223 | ||
224 | priv->ssiu = ssiu; | |
225 | priv->ssiu_nr = nr; | |
226 | ||
227 | if (rsnd_is_gen1(priv)) | |
228 | ops = &rsnd_ssiu_ops_gen1; | |
229 | else | |
230 | ops = &rsnd_ssiu_ops_gen2; | |
231 | ||
232 | for_each_rsnd_ssiu(ssiu, priv, i) { | |
233 | ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu), | |
5ba17b42 KM |
234 | ops, NULL, rsnd_mod_get_status, |
235 | RSND_MOD_SSIU, i); | |
c7f69ab5 KM |
236 | if (ret) |
237 | return ret; | |
238 | } | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
2ea6b074 | 243 | void rsnd_ssiu_remove(struct rsnd_priv *priv) |
c7f69ab5 KM |
244 | { |
245 | struct rsnd_ssiu *ssiu; | |
246 | int i; | |
247 | ||
248 | for_each_rsnd_ssiu(ssiu, priv, i) { | |
249 | rsnd_mod_quit(rsnd_mod_get(ssiu)); | |
250 | } | |
251 | } |