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_of_node(priv) \
28 of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc")
30 #define rsnd_mod_to_dvc(_mod) \
31 container_of((_mod), struct rsnd_dvc, mod)
33 #define for_each_rsnd_dvc(pos, priv, i) \
35 ((i) < rsnd_dvc_nr(priv)) && \
36 ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
39 static const char * const dvc_ramp_rate
[] = {
40 "128 dB/1 step", /* 00000 */
41 "64 dB/1 step", /* 00001 */
42 "32 dB/1 step", /* 00010 */
43 "16 dB/1 step", /* 00011 */
44 "8 dB/1 step", /* 00100 */
45 "4 dB/1 step", /* 00101 */
46 "2 dB/1 step", /* 00110 */
47 "1 dB/1 step", /* 00111 */
48 "0.5 dB/1 step", /* 01000 */
49 "0.25 dB/1 step", /* 01001 */
50 "0.125 dB/1 step", /* 01010 */
51 "0.125 dB/2 steps", /* 01011 */
52 "0.125 dB/4 steps", /* 01100 */
53 "0.125 dB/8 steps", /* 01101 */
54 "0.125 dB/16 steps", /* 01110 */
55 "0.125 dB/32 steps", /* 01111 */
56 "0.125 dB/64 steps", /* 10000 */
57 "0.125 dB/128 steps", /* 10001 */
58 "0.125 dB/256 steps", /* 10010 */
59 "0.125 dB/512 steps", /* 10011 */
60 "0.125 dB/1024 steps", /* 10100 */
61 "0.125 dB/2048 steps", /* 10101 */
62 "0.125 dB/4096 steps", /* 10110 */
63 "0.125 dB/8192 steps", /* 10111 */
66 static void rsnd_dvc_volume_update(struct rsnd_mod
*mod
)
68 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
69 u32 val
[RSND_DVC_CHANNELS
];
74 for (i
= 0; i
< dvc
->mute
.cfg
.size
; i
++)
75 mute
|= (!!dvc
->mute
.cfg
.val
[i
]) << i
;
77 /* Disable DVC Register access */
78 rsnd_mod_write(mod
, DVC_DVUER
, 0);
84 /* Digital Volume Max */
85 for (i
= 0; i
< RSND_DVC_CHANNELS
; i
++)
86 val
[i
] = dvc
->volume
.cfg
.max
;
88 rsnd_mod_write(mod
, DVC_VRCTR
, 0xff);
89 rsnd_mod_write(mod
, DVC_VRPDR
, dvc
->rup
.val
<< 8 |
93 * use scale-downed Digital Volume
97 rsnd_mod_write(mod
, DVC_VRDBR
,
98 0x3ff - (dvc
->volume
.val
[0] >> 13));
101 for (i
= 0; i
< RSND_DVC_CHANNELS
; i
++)
102 val
[i
] = dvc
->volume
.val
[i
];
105 /* Enable Digital Volume */
107 rsnd_mod_write(mod
, DVC_VOL0R
, val
[0]);
108 rsnd_mod_write(mod
, DVC_VOL1R
, val
[1]);
113 rsnd_mod_write(mod
, DVC_ZCMCR
, mute
);
116 rsnd_mod_write(mod
, DVC_DVUCR
, dvucr
);
118 /* Enable DVC Register access */
119 rsnd_mod_write(mod
, DVC_DVUER
, 1);
122 static int rsnd_dvc_remove_gen2(struct rsnd_mod
*mod
,
123 struct rsnd_priv
*priv
)
125 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
127 rsnd_kctrl_remove(dvc
->volume
);
128 rsnd_kctrl_remove(dvc
->mute
);
129 rsnd_kctrl_remove(dvc
->ren
);
130 rsnd_kctrl_remove(dvc
->rup
);
131 rsnd_kctrl_remove(dvc
->rdown
);
136 static int rsnd_dvc_init(struct rsnd_mod
*dvc_mod
,
137 struct rsnd_priv
*priv
)
139 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(dvc_mod
);
140 struct rsnd_mod
*src_mod
= rsnd_io_to_mod_src(io
);
141 struct device
*dev
= rsnd_priv_to_dev(priv
);
142 int dvc_id
= rsnd_mod_id(dvc_mod
);
143 int src_id
= rsnd_mod_id(src_mod
);
153 if (src_id
>= ARRAY_SIZE(route
)) {
154 dev_err(dev
, "DVC%d isn't connected to SRC%d\n", dvc_id
, src_id
);
158 rsnd_mod_hw_start(dvc_mod
);
162 * it doesn't support CTU/MIX
164 rsnd_mod_write(dvc_mod
, CMD_ROUTE_SLCT
, route
[src_id
]);
166 rsnd_mod_write(dvc_mod
, DVC_SWRSR
, 0);
167 rsnd_mod_write(dvc_mod
, DVC_SWRSR
, 1);
169 rsnd_mod_write(dvc_mod
, DVC_DVUIR
, 1);
171 rsnd_mod_write(dvc_mod
, DVC_ADINR
, rsnd_get_adinr(dvc_mod
));
174 rsnd_dvc_volume_update(dvc_mod
);
176 rsnd_mod_write(dvc_mod
, DVC_DVUIR
, 0);
178 rsnd_adg_set_cmd_timsel_gen2(dvc_mod
, io
);
183 static int rsnd_dvc_quit(struct rsnd_mod
*mod
,
184 struct rsnd_priv
*priv
)
186 rsnd_mod_hw_stop(mod
);
191 static int rsnd_dvc_start(struct rsnd_mod
*mod
,
192 struct rsnd_priv
*priv
)
194 rsnd_mod_write(mod
, CMD_CTRL
, 0x10);
199 static int rsnd_dvc_stop(struct rsnd_mod
*mod
,
200 struct rsnd_priv
*priv
)
202 rsnd_mod_write(mod
, CMD_CTRL
, 0);
207 static int rsnd_dvc_pcm_new(struct rsnd_mod
*mod
,
208 struct snd_soc_pcm_runtime
*rtd
)
210 struct rsnd_dai_stream
*io
= rsnd_mod_to_io(mod
);
211 struct rsnd_dvc
*dvc
= rsnd_mod_to_dvc(mod
);
212 int is_play
= rsnd_io_is_play(io
);
216 ret
= rsnd_kctrl_new_m(mod
, rtd
,
218 "DVC Out Playback Volume" : "DVC In Capture Volume",
219 rsnd_dvc_volume_update
,
220 &dvc
->volume
, 0x00800000 - 1);
225 ret
= rsnd_kctrl_new_m(mod
, rtd
,
227 "DVC Out Mute Switch" : "DVC In Mute Switch",
228 rsnd_dvc_volume_update
,
234 ret
= rsnd_kctrl_new_s(mod
, rtd
,
236 "DVC Out Ramp Switch" : "DVC In Ramp Switch",
237 rsnd_dvc_volume_update
,
242 ret
= rsnd_kctrl_new_e(mod
, rtd
,
244 "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
246 rsnd_dvc_volume_update
,
247 dvc_ramp_rate
, ARRAY_SIZE(dvc_ramp_rate
));
251 ret
= rsnd_kctrl_new_e(mod
, rtd
,
253 "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
255 rsnd_dvc_volume_update
,
256 dvc_ramp_rate
, ARRAY_SIZE(dvc_ramp_rate
));
264 static struct dma_chan
*rsnd_dvc_dma_req(struct rsnd_mod
*mod
)
266 struct rsnd_priv
*priv
= rsnd_mod_to_priv(mod
);
268 return rsnd_dma_request_channel(rsnd_dvc_of_node(priv
),
272 static struct rsnd_mod_ops rsnd_dvc_ops
= {
274 .dma_req
= rsnd_dvc_dma_req
,
275 .remove
= rsnd_dvc_remove_gen2
,
276 .init
= rsnd_dvc_init
,
277 .quit
= rsnd_dvc_quit
,
278 .start
= rsnd_dvc_start
,
279 .stop
= rsnd_dvc_stop
,
280 .pcm_new
= rsnd_dvc_pcm_new
,
283 struct rsnd_mod
*rsnd_dvc_mod_get(struct rsnd_priv
*priv
, int id
)
285 if (WARN_ON(id
< 0 || id
>= rsnd_dvc_nr(priv
)))
288 return &((struct rsnd_dvc
*)(priv
->dvc
) + id
)->mod
;
291 static void rsnd_of_parse_dvc(struct platform_device
*pdev
,
292 const struct rsnd_of_data
*of_data
,
293 struct rsnd_priv
*priv
)
295 struct device_node
*node
;
296 struct rsnd_dvc_platform_info
*dvc_info
;
297 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
298 struct device
*dev
= &pdev
->dev
;
304 node
= of_get_child_by_name(dev
->of_node
, "rcar_sound,dvc");
308 nr
= of_get_child_count(node
);
310 goto rsnd_of_parse_dvc_end
;
312 dvc_info
= devm_kzalloc(dev
,
313 sizeof(struct rsnd_dvc_platform_info
) * nr
,
316 dev_err(dev
, "dvc info allocation error\n");
317 goto rsnd_of_parse_dvc_end
;
320 info
->dvc_info
= dvc_info
;
321 info
->dvc_info_nr
= nr
;
323 rsnd_of_parse_dvc_end
:
327 int rsnd_dvc_probe(struct platform_device
*pdev
,
328 const struct rsnd_of_data
*of_data
,
329 struct rsnd_priv
*priv
)
331 struct rcar_snd_info
*info
= rsnd_priv_to_info(priv
);
332 struct device
*dev
= rsnd_priv_to_dev(priv
);
333 struct rsnd_dvc
*dvc
;
335 char name
[RSND_DVC_NAME_SIZE
];
338 rsnd_of_parse_dvc(pdev
, of_data
, priv
);
340 nr
= info
->dvc_info_nr
;
344 /* This driver doesn't support Gen1 at this point */
345 if (rsnd_is_gen1(priv
)) {
346 dev_warn(dev
, "CMD is not supported on Gen1\n");
350 dvc
= devm_kzalloc(dev
, sizeof(*dvc
) * nr
, GFP_KERNEL
);
352 dev_err(dev
, "CMD allocate failed\n");
359 for_each_rsnd_dvc(dvc
, priv
, i
) {
360 snprintf(name
, RSND_DVC_NAME_SIZE
, "%s.%d",
363 clk
= devm_clk_get(dev
, name
);
367 dvc
->info
= &info
->dvc_info
[i
];
369 ret
= rsnd_mod_init(priv
, &dvc
->mod
, &rsnd_dvc_ops
,
370 clk
, RSND_MOD_DVC
, i
);
378 void rsnd_dvc_remove(struct platform_device
*pdev
,
379 struct rsnd_priv
*priv
)
381 struct rsnd_dvc
*dvc
;
384 for_each_rsnd_dvc(dvc
, priv
, i
) {
385 rsnd_mod_quit(&dvc
->mod
);