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@@ -0,0 +1,273 @@
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+/*
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+ * Renesas R-Car DVC support
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+ *
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+ * Copyright (C) 2014 Renesas Solutions Corp.
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+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+#include "rsnd.h"
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+
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+#define RSND_DVC_NAME_SIZE 16
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+#define RSND_DVC_VOLUME_MAX 100
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+#define RSND_DVC_VOLUME_NUM 2
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+struct rsnd_dvc {
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+ struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
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+ struct rsnd_mod mod;
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+ struct clk *clk;
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+ long volume[RSND_DVC_VOLUME_NUM];
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+};
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+
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+#define rsnd_mod_to_dvc(_mod) \
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+ container_of((_mod), struct rsnd_dvc, mod)
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+
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+#define for_each_rsnd_dvc(pos, priv, i) \
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+ for ((i) = 0; \
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+ ((i) < rsnd_dvc_nr(priv)) && \
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+ ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
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+ i++)
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+
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+static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
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+{
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+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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+ u32 max = (0x00800000 - 1);
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+ u32 vol[RSND_DVC_VOLUME_NUM];
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+ int i;
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+
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+ for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
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+ vol[i] = max / RSND_DVC_VOLUME_MAX * dvc->volume[i];
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+
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+ rsnd_mod_write(mod, DVC_VOL0R, vol[0]);
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+ rsnd_mod_write(mod, DVC_VOL1R, vol[1]);
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+}
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+
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+static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
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+ struct rsnd_dai *rdai)
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+{
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+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod);
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+ struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
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+ struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod);
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+ struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
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+ struct device *dev = rsnd_priv_to_dev(priv);
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+ int dvc_id = rsnd_mod_id(dvc_mod);
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+ int src_id = rsnd_mod_id(src_mod);
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+ u32 route[] = {
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+ [0] = 0x30000,
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+ [1] = 0x30001,
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+ [2] = 0x40000,
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+ [3] = 0x10000,
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+ [4] = 0x20000,
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+ [5] = 0x40100
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+ };
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+
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+ if (src_id >= ARRAY_SIZE(route)) {
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+ dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
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+ return -EINVAL;
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+ }
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+
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+ clk_prepare_enable(dvc->clk);
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+
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+ /*
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+ * fixme
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+ * it doesn't support CTU/MIX
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+ */
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+ rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
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+
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+ rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
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+ rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
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+
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+ rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
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+
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+ rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));
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+
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+ /* enable Volume */
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+ rsnd_mod_write(dvc_mod, DVC_DVUCR, 0x100);
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+
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+ /* ch0/ch1 Volume */
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+ rsnd_dvc_volume_update(dvc_mod);
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+
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+ rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);
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+
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+ rsnd_mod_write(dvc_mod, DVC_DVUER, 1);
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+
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+ rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io);
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_quit(struct rsnd_mod *mod,
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+ struct rsnd_dai *rdai)
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+{
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+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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+
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+ clk_disable_unprepare(dvc->clk);
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_start(struct rsnd_mod *mod,
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+ struct rsnd_dai *rdai)
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+{
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+ rsnd_mod_write(mod, CMD_CTRL, 0x10);
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_stop(struct rsnd_mod *mod,
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+ struct rsnd_dai *rdai)
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+{
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+ rsnd_mod_write(mod, CMD_CTRL, 0);
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_volume_info(struct snd_kcontrol *kctrl,
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+ struct snd_ctl_elem_info *uinfo)
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+{
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+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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+ uinfo->count = RSND_DVC_VOLUME_NUM;
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+ uinfo->value.integer.min = 0;
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+ uinfo->value.integer.max = RSND_DVC_VOLUME_MAX;
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_volume_get(struct snd_kcontrol *kctrl,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
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+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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+ int i;
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+
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+ for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
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+ ucontrol->value.integer.value[i] = dvc->volume[i];
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+
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+ return 0;
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+}
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+
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+static int rsnd_dvc_volume_put(struct snd_kcontrol *kctrl,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
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+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
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+ int i, change = 0;
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+
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+ for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) {
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+ if (ucontrol->value.integer.value[i] < 0 ||
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+ ucontrol->value.integer.value[i] > RSND_DVC_VOLUME_MAX)
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+ return -EINVAL;
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+
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+ change |= (ucontrol->value.integer.value[i] != dvc->volume[i]);
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+ }
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+
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+ if (change) {
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+ for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
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+ dvc->volume[i] = ucontrol->value.integer.value[i];
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+
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+ rsnd_dvc_volume_update(mod);
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+ }
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+
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+ return change;
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+}
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+
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+static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
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+ struct rsnd_dai *rdai,
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+ struct snd_soc_pcm_runtime *rtd)
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+{
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+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
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+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
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+ struct device *dev = rsnd_priv_to_dev(priv);
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+ struct snd_card *card = rtd->card->snd_card;
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+ struct snd_kcontrol *kctrl;
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+ static struct snd_kcontrol_new knew = {
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+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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+ .name = "Playback Volume",
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+ .info = rsnd_dvc_volume_info,
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+ .get = rsnd_dvc_volume_get,
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+ .put = rsnd_dvc_volume_put,
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+ };
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+ int ret;
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+
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+ if (!rsnd_dai_is_play(rdai, io)) {
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+ dev_err(dev, "DVC%d is connected to Capture DAI\n",
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+ rsnd_mod_id(mod));
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+ return -EINVAL;
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+ }
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+
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+ kctrl = snd_ctl_new1(&knew, mod);
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+ if (!kctrl)
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+ return -ENOMEM;
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+
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+ ret = snd_ctl_add(card, kctrl);
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+ if (ret < 0)
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+ return ret;
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+
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+ return 0;
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+}
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+
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+static struct rsnd_mod_ops rsnd_dvc_ops = {
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+ .name = "dvc (gen2)",
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+ .init = rsnd_dvc_init,
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+ .quit = rsnd_dvc_quit,
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+ .start = rsnd_dvc_start,
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+ .stop = rsnd_dvc_stop,
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+ .pcm_new = rsnd_dvc_pcm_new,
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+};
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+
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+struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
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+{
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+ if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
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+ id = 0;
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+
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+ return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
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+}
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+
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+int rsnd_dvc_probe(struct platform_device *pdev,
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+ const struct rsnd_of_data *of_data,
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+ struct rsnd_priv *priv)
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+{
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+ struct rcar_snd_info *info = rsnd_priv_to_info(priv);
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+ struct device *dev = rsnd_priv_to_dev(priv);
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+ struct rsnd_dvc *dvc;
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+ struct clk *clk;
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+ char name[RSND_DVC_NAME_SIZE];
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+ int i, nr;
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+
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+ nr = info->dvc_info_nr;
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+ if (!nr)
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+ return 0;
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+
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+ /* This driver doesn't support Gen1 at this point */
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+ if (rsnd_is_gen1(priv)) {
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+ dev_warn(dev, "CMD is not supported on Gen1\n");
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+ return -EINVAL;
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+ }
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+
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+ dvc = devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
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+ if (!dvc) {
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+ dev_err(dev, "CMD allocate failed\n");
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+ return -ENOMEM;
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+ }
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+
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+ priv->dvc_nr = nr;
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+ priv->dvc = dvc;
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+
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+ for_each_rsnd_dvc(dvc, priv, i) {
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+ snprintf(name, RSND_DVC_NAME_SIZE, "dvc.%d", i);
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+
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+ clk = devm_clk_get(dev, name);
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+ if (IS_ERR(clk))
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+ return PTR_ERR(clk);
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+
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+ dvc->info = &info->dvc_info[i];
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+ dvc->clk = clk;
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+
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+ rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i);
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+
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+ dev_dbg(dev, "CMD%d probed\n", i);
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+ }
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+
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+ return 0;
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+}
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Kuninori Morimoto