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(&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);