2 * Renesas R-Car DVC support
4 * Copyright (C) 2014 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
13 #define RSND_DVC_NAME_SIZE 16
15 #define DVC_NAME "dvc"
18 struct rsnd_dvc_platform_info
*info
; /* rcar_snd.h */
20 struct rsnd_kctrl_cfg_m volume
;
21 struct rsnd_kctrl_cfg_m mute
;
22 struct rsnd_kctrl_cfg_s ren
; /* Ramp Enable */
23 struct rsnd_kctrl_cfg_s rup
; /* Ramp Rate Up */
24 struct rsnd_kctrl_cfg_s rdown
; /* Ramp Rate Down */
27 #define rsnd_dvc_nr(priv) ((priv)->dvc_nr)
28 #define rsnd_dvc_of_node(priv) \
29 of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc")
31 #define rsnd_mod_to_dvc(_mod) \
32 container_of((_mod), struct rsnd_dvc, mod)
34 #define for_each_rsnd_dvc(pos, priv, i) \
36 ((i) < rsnd_dvc_nr(priv)) && \
37 ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
40 static const char * const dvc_ramp_rate
[] = {
41 "128 dB/1 step", /* 00000 */
42 "64 dB/1 step", /* 00001 */
43 "32 dB/1 step", /* 00010 */
44 "16 dB/1 step", /* 00011 */
45 "8 dB/1 step", /* 00100 */
46 "4 dB/1 step", /* 00101 */
47 "2 dB/1 step", /* 00110 */
48 "1 dB/1 step", /* 00111 */
49 "0.5 dB/1 step", /* 01000 */
50 "0.25 dB/1 step", /* 01001 */
51 "0.125 dB/1 step", /* 01010 */
52 "0.125 dB/2 steps", /* 01011 */
53 "0.125 dB/4 steps", /* 01100 */
54 "0.125 dB/8 steps", /* 01101 */
55 "0.125 dB/16 steps", /* 01110 */
56 "0.125 dB/32 steps", /* 01111 */
57 "0.125 dB/64 steps", /* 10000 */
58 "0.125 dB/128 steps", /* 10001 */
59 "0.125 dB/256 steps", /* 10010 */
60 "0.125 dB/512 steps", /* 10011 */
61 "0.125 dB/1024 steps", /* 10100 */
62 "0.125 dB/2048 steps", /* 10101 */
63 "0.125 dB/4096 steps", /* 10110 */
64 "0.125 dB/8192 steps", /* 10111 */
67 static void rsnd_dvc_soft_reset(struct rsnd_mod
*mod
)
69 rsnd_mod_write(mod
, DVC_SWRSR
, 0);
70 rsnd_mod_write(mod
, DVC_SWRSR
, 1);
73 #define rsnd_dvc_initialize_lock(mod) __rsnd_dvc_initialize_lock(mod, 1)
74 #define rsnd_dvc_initialize_unlock(mod) __rsnd_dvc_initialize_lock(mod, 0)
75 static void __rsnd_dvc_initialize_lock(struct rsnd_mod
*mod
, u32 enable
)
77 rsnd_mod_write(mod
, DVC_DVUIR
, enable
);
80 static void rsnd_dvc_volume_update(struct rsnd_dai_stream
*io
,
83 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
84 u32 val
[RSND_DVC_CHANNELS
];
89 for (i
= 0; i
< dvc
->mute
.cfg
.size
; i
++)
90 mute
|= (!!dvc
->mute
.cfg
.val
[i
]) << i
;
92 /* Disable DVC Register access */
93 rsnd_mod_write(mod
, DVC_DVUER
, 0);
99 /* Digital Volume Max */
100 for (i
= 0; i
< RSND_DVC_CHANNELS
; i
++)
101 val
[i
] = dvc
->volume
.cfg
.max
;
103 rsnd_mod_write(mod
, DVC_VRCTR
, 0xff);
104 rsnd_mod_write(mod
, DVC_VRPDR
, dvc
->rup
.val
<< 8 |
108 * use scale-downed Digital Volume
112 rsnd_mod_write(mod
, DVC_VRDBR
,
113 0x3ff - (dvc
->volume
.val
[0] >> 13));
116 for (i
= 0; i
< RSND_DVC_CHANNELS
; i
++)
117 val
[i
] = dvc
->volume
.val
[i
];
120 /* Enable Digital Volume */
122 rsnd_mod_write(mod
, DVC_VOL0R
, val
[0]);
123 rsnd_mod_write(mod
, DVC_VOL1R
, val
[1]);
128 rsnd_mod_write(mod
, DVC_ZCMCR
, mute
);
131 rsnd_mod_write(mod
, DVC_DVUCR
, dvucr
);
133 /* Enable DVC Register access */
134 rsnd_mod_write(mod
, DVC_DVUER
, 1);
137 static int rsnd_dvc_remove_gen2(struct rsnd_mod
*mod
,
138 struct rsnd_dai_stream
*io
,
139 struct rsnd_priv
*priv
)
141 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
143 rsnd_kctrl_remove(dvc
->volume
);
144 rsnd_kctrl_remove(dvc
->mute
);
145 rsnd_kctrl_remove(dvc
->ren
);
146 rsnd_kctrl_remove(dvc
->rup
);
147 rsnd_kctrl_remove(dvc
->rdown
);
152 static int rsnd_dvc_init(struct rsnd_mod
*mod
,
153 struct rsnd_dai_stream
*io
,
154 struct rsnd_priv
*priv
)
156 rsnd_mod_power_on(mod
);
158 rsnd_dvc_soft_reset(mod
);
160 rsnd_dvc_initialize_lock(mod
);
162 rsnd_path_parse(priv
, io
);
164 rsnd_mod_write(mod
, DVC_ADINR
, rsnd_get_adinr_bit(mod
, io
));
167 rsnd_dvc_volume_update(io
, mod
);
169 rsnd_adg_set_cmd_timsel_gen2(mod
, io
);
174 static int rsnd_dvc_quit(struct rsnd_mod
*mod
,
175 struct rsnd_dai_stream
*io
,
176 struct rsnd_priv
*priv
)
178 rsnd_mod_power_off(mod
);
183 static int rsnd_dvc_start(struct rsnd_mod
*mod
,
184 struct rsnd_dai_stream
*io
,
185 struct rsnd_priv
*priv
)
187 rsnd_dvc_initialize_unlock(mod
);
189 rsnd_mod_write(mod
, CMD_CTRL
, 0x10);
194 static int rsnd_dvc_stop(struct rsnd_mod
*mod
,
195 struct rsnd_dai_stream
*io
,
196 struct rsnd_priv
*priv
)
198 rsnd_mod_write(mod
, CMD_CTRL
, 0);
203 static int rsnd_dvc_pcm_new(struct rsnd_mod
*mod
,
204 struct rsnd_dai_stream
*io
,
205 struct snd_soc_pcm_runtime
*rtd
)
207 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
208 int is_play
= rsnd_io_is_play(io
);
212 ret
= rsnd_kctrl_new_m(mod
, io
, rtd
,
214 "DVC Out Playback Volume" : "DVC In Capture Volume",
215 rsnd_dvc_volume_update
,
216 &dvc
->volume
, 0x00800000 - 1);
221 ret
= rsnd_kctrl_new_m(mod
, io
, rtd
,
223 "DVC Out Mute Switch" : "DVC In Mute Switch",
224 rsnd_dvc_volume_update
,
230 ret
= rsnd_kctrl_new_s(mod
, io
, rtd
,
232 "DVC Out Ramp Switch" : "DVC In Ramp Switch",
233 rsnd_dvc_volume_update
,
238 ret
= rsnd_kctrl_new_e(mod
, io
, rtd
,
240 "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
242 rsnd_dvc_volume_update
,
243 dvc_ramp_rate
, ARRAY_SIZE(dvc_ramp_rate
));
247 ret
= rsnd_kctrl_new_e(mod
, io
, rtd
,
249 "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
251 rsnd_dvc_volume_update
,
252 dvc_ramp_rate
, ARRAY_SIZE(dvc_ramp_rate
));
260 static struct dma_chan
*rsnd_dvc_dma_req(struct rsnd_dai_stream
*io
,
261 struct rsnd_mod
*mod
)
263 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
265 return rsnd_dma_request_channel(rsnd_dvc_of_node(priv
),
269 static struct rsnd_mod_ops rsnd_dvc_ops
= {
271 .dma_req
= rsnd_dvc_dma_req
,
272 .remove
= rsnd_dvc_remove_gen2
,
273 .init
= rsnd_dvc_init
,
274 .quit
= rsnd_dvc_quit
,
275 .start
= rsnd_dvc_start
,
276 .stop
= rsnd_dvc_stop
,
277 .pcm_new
= rsnd_dvc_pcm_new
,
280 struct rsnd_mod
*rsnd_dvc_mod_get(struct rsnd_priv
*priv
, int id
)
282 if (WARN_ON(id
< 0 || id
>= rsnd_dvc_nr(priv
)))
285 return rsnd_mod_get((struct rsnd_dvc
*)(priv
->dvc
) + id
);
288 static void rsnd_of_parse_dvc(struct platform_device
*pdev
,
289 const struct rsnd_of_data
*of_data
,
290 struct rsnd_priv
*priv
)
292 struct device_node
*node
;
293 struct rsnd_dvc_platform_info
*dvc_info
;
294 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
295 struct device
*dev
= &pdev
->dev
;
301 node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dvc");
305 nr
= of_get_child_count(node
);
307 goto rsnd_of_parse_dvc_end
;
309 dvc_info
= devm_kzalloc(dev
,
310 sizeof(struct rsnd_dvc_platform_info
) * nr
,
313 dev_err(dev
, "dvc info allocation error\n");
314 goto rsnd_of_parse_dvc_end
;
317 info
->dvc_info
= dvc_info
;
318 info
->dvc_info_nr
= nr
;
320 rsnd_of_parse_dvc_end
:
324 int rsnd_dvc_probe(struct platform_device
*pdev
,
325 const struct rsnd_of_data
*of_data
,
326 struct rsnd_priv
*priv
)
328 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
329 struct device
*dev
= rsnd_priv_to_dev(priv
);
330 struct rsnd_dvc
*dvc
;
332 char name
[RSND_DVC_NAME_SIZE
];
335 /* This driver doesn't support Gen1 at this point */
336 if (rsnd_is_gen1(priv
))
339 rsnd_of_parse_dvc(pdev
, of_data
, priv
);
341 nr
= info
->dvc_info_nr
;
345 dvc
= devm_kzalloc(dev
, sizeof(*dvc
) * nr
, GFP_KERNEL
);
352 for_each_rsnd_dvc(dvc
, priv
, i
) {
353 snprintf(name
, RSND_DVC_NAME_SIZE
, "%s.%d",
356 clk
= devm_clk_get(dev
, name
);
360 dvc
->info
= &info
->dvc_info
[i
];
362 ret
= rsnd_mod_init(priv
, rsnd_mod_get(dvc
), &rsnd_dvc_ops
,
363 clk
, RSND_MOD_DVC
, i
);
371 void rsnd_dvc_remove(struct platform_device
*pdev
,
372 struct rsnd_priv
*priv
)
374 struct rsnd_dvc
*dvc
;
377 for_each_rsnd_dvc(dvc
, priv
, i
) {
378 rsnd_mod_quit(rsnd_mod_get(dvc
));