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-rw-r--r--sound/soc/sh/rcar/mix.c360
1 files changed, 360 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/mix.c b/sound/soc/sh/rcar/mix.c
new file mode 100644
index 0000000000..1de0e08580
--- /dev/null
+++ b/sound/soc/sh/rcar/mix.c
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// mix.c
+//
+// Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+/*
+ * CTUn MIXn
+ * +------+ +------+
+ * [SRC3 / SRC6] -> |CTU n0| -> [MIX n0| ->
+ * [SRC4 / SRC9] -> |CTU n1| -> [MIX n1| ->
+ * [SRC0 / SRC1] -> |CTU n2| -> [MIX n2| ->
+ * [SRC2 / SRC5] -> |CTU n3| -> [MIX n3| ->
+ * +------+ +------+
+ *
+ * ex)
+ * DAI0 : playback = <&src0 &ctu02 &mix0 &dvc0 &ssi0>;
+ * DAI1 : playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
+ *
+ * MIX Volume
+ * amixer set "MIX",0 100% // DAI0 Volume
+ * amixer set "MIX",1 100% // DAI1 Volume
+ *
+ * Volume Ramp
+ * amixer set "MIX Ramp Up Rate" "0.125 dB/1 step"
+ * amixer set "MIX Ramp Down Rate" "4 dB/1 step"
+ * amixer set "MIX Ramp" on
+ * aplay xxx.wav &
+ * amixer set "MIX",0 80% // DAI0 Volume Down
+ * amixer set "MIX",1 100% // DAI1 Volume Up
+ */
+
+#include "rsnd.h"
+
+#define MIX_NAME_SIZE 16
+#define MIX_NAME "mix"
+
+struct rsnd_mix {
+ struct rsnd_mod mod;
+ struct rsnd_kctrl_cfg_s volumeA; /* MDBAR */
+ struct rsnd_kctrl_cfg_s volumeB; /* MDBBR */
+ struct rsnd_kctrl_cfg_s volumeC; /* MDBCR */
+ struct rsnd_kctrl_cfg_s volumeD; /* MDBDR */
+ struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
+ struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
+ struct rsnd_kctrl_cfg_s rdw; /* Ramp Rate Down */
+ u32 flags;
+};
+
+#define ONCE_KCTRL_INITIALIZED (1 << 0)
+#define HAS_VOLA (1 << 1)
+#define HAS_VOLB (1 << 2)
+#define HAS_VOLC (1 << 3)
+#define HAS_VOLD (1 << 4)
+
+#define VOL_MAX 0x3ff
+
+#define rsnd_mod_to_mix(_mod) \
+ container_of((_mod), struct rsnd_mix, mod)
+
+#define rsnd_mix_get(priv, id) ((struct rsnd_mix *)(priv->mix) + id)
+#define rsnd_mix_nr(priv) ((priv)->mix_nr)
+#define for_each_rsnd_mix(pos, priv, i) \
+ for ((i) = 0; \
+ ((i) < rsnd_mix_nr(priv)) && \
+ ((pos) = (struct rsnd_mix *)(priv)->mix + i); \
+ i++)
+
+static void rsnd_mix_activation(struct rsnd_mod *mod)
+{
+ rsnd_mod_write(mod, MIX_SWRSR, 0);
+ rsnd_mod_write(mod, MIX_SWRSR, 1);
+}
+
+static void rsnd_mix_halt(struct rsnd_mod *mod)
+{
+ rsnd_mod_write(mod, MIX_MIXIR, 1);
+ rsnd_mod_write(mod, MIX_SWRSR, 0);
+}
+
+#define rsnd_mix_get_vol(mix, X) \
+ rsnd_flags_has(mix, HAS_VOL##X) ? \
+ (VOL_MAX - rsnd_kctrl_vals(mix->volume##X)) : 0
+static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io,
+ struct rsnd_mod *mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
+ u32 volA = rsnd_mix_get_vol(mix, A);
+ u32 volB = rsnd_mix_get_vol(mix, B);
+ u32 volC = rsnd_mix_get_vol(mix, C);
+ u32 volD = rsnd_mix_get_vol(mix, D);
+
+ dev_dbg(dev, "MIX A/B/C/D = %02x/%02x/%02x/%02x\n",
+ volA, volB, volC, volD);
+
+ rsnd_mod_write(mod, MIX_MDBAR, volA);
+ rsnd_mod_write(mod, MIX_MDBBR, volB);
+ rsnd_mod_write(mod, MIX_MDBCR, volC);
+ rsnd_mod_write(mod, MIX_MDBDR, volD);
+}
+
+static void rsnd_mix_volume_init(struct rsnd_dai_stream *io,
+ struct rsnd_mod *mod)
+{
+ struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
+
+ rsnd_mod_write(mod, MIX_MIXIR, 1);
+
+ /* General Information */
+ rsnd_mod_write(mod, MIX_ADINR, rsnd_runtime_channel_after_ctu(io));
+
+ /* volume step */
+ rsnd_mod_write(mod, MIX_MIXMR, rsnd_kctrl_vals(mix->ren));
+ rsnd_mod_write(mod, MIX_MVPDR, rsnd_kctrl_vals(mix->rup) << 8 |
+ rsnd_kctrl_vals(mix->rdw));
+
+ /* common volume parameter */
+ rsnd_mix_volume_parameter(io, mod);
+
+ rsnd_mod_write(mod, MIX_MIXIR, 0);
+}
+
+static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
+ struct rsnd_mod *mod)
+{
+ /* Disable MIX dB setting */
+ rsnd_mod_write(mod, MIX_MDBER, 0);
+
+ /* common volume parameter */
+ rsnd_mix_volume_parameter(io, mod);
+
+ /* Enable MIX dB setting */
+ rsnd_mod_write(mod, MIX_MDBER, 1);
+}
+
+static int rsnd_mix_probe_(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
+{
+ return rsnd_cmd_attach(io, rsnd_mod_id(mod));
+}
+
+static int rsnd_mix_init(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
+{
+ int ret;
+
+ ret = rsnd_mod_power_on(mod);
+ if (ret < 0)
+ return ret;
+
+ rsnd_mix_activation(mod);
+
+ rsnd_mix_volume_init(io, mod);
+
+ rsnd_mix_volume_update(io, mod);
+
+ return 0;
+}
+
+static int rsnd_mix_quit(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct rsnd_priv *priv)
+{
+ rsnd_mix_halt(mod);
+
+ rsnd_mod_power_off(mod);
+
+ return 0;
+}
+
+static int rsnd_mix_pcm_new(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
+ struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
+ struct rsnd_kctrl_cfg_s *volume;
+ int ret;
+
+ switch (rsnd_mod_id(src_mod)) {
+ case 3:
+ case 6: /* MDBAR */
+ volume = &mix->volumeA;
+ rsnd_flags_set(mix, HAS_VOLA);
+ break;
+ case 4:
+ case 9: /* MDBBR */
+ volume = &mix->volumeB;
+ rsnd_flags_set(mix, HAS_VOLB);
+ break;
+ case 0:
+ case 1: /* MDBCR */
+ volume = &mix->volumeC;
+ rsnd_flags_set(mix, HAS_VOLC);
+ break;
+ case 2:
+ case 5: /* MDBDR */
+ volume = &mix->volumeD;
+ rsnd_flags_set(mix, HAS_VOLD);
+ break;
+ default:
+ dev_err(dev, "unknown SRC is connected\n");
+ return -EINVAL;
+ }
+
+ /* Volume */
+ ret = rsnd_kctrl_new_s(mod, io, rtd,
+ "MIX Playback Volume",
+ rsnd_kctrl_accept_anytime,
+ rsnd_mix_volume_update,
+ volume, VOL_MAX);
+ if (ret < 0)
+ return ret;
+ rsnd_kctrl_vals(*volume) = VOL_MAX;
+
+ if (rsnd_flags_has(mix, ONCE_KCTRL_INITIALIZED))
+ return ret;
+
+ /* Ramp */
+ ret = rsnd_kctrl_new_s(mod, io, rtd,
+ "MIX Ramp Switch",
+ rsnd_kctrl_accept_anytime,
+ rsnd_mix_volume_update,
+ &mix->ren, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_kctrl_new_e(mod, io, rtd,
+ "MIX Ramp Up Rate",
+ rsnd_kctrl_accept_anytime,
+ rsnd_mix_volume_update,
+ &mix->rup,
+ volume_ramp_rate,
+ VOLUME_RAMP_MAX_MIX);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_kctrl_new_e(mod, io, rtd,
+ "MIX Ramp Down Rate",
+ rsnd_kctrl_accept_anytime,
+ rsnd_mix_volume_update,
+ &mix->rdw,
+ volume_ramp_rate,
+ VOLUME_RAMP_MAX_MIX);
+
+ rsnd_flags_set(mix, ONCE_KCTRL_INITIALIZED);
+
+ return ret;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void rsnd_mix_debug_info(struct seq_file *m,
+ struct rsnd_dai_stream *io,
+ struct rsnd_mod *mod)
+{
+ rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
+ 0xd00 + rsnd_mod_id(mod) * 0x40, 0x30);
+}
+#define DEBUG_INFO .debug_info = rsnd_mix_debug_info
+#else
+#define DEBUG_INFO
+#endif
+
+static struct rsnd_mod_ops rsnd_mix_ops = {
+ .name = MIX_NAME,
+ .probe = rsnd_mix_probe_,
+ .init = rsnd_mix_init,
+ .quit = rsnd_mix_quit,
+ .pcm_new = rsnd_mix_pcm_new,
+ .get_status = rsnd_mod_get_status,
+ DEBUG_INFO
+};
+
+struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
+{
+ if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
+ id = 0;
+
+ return rsnd_mod_get(rsnd_mix_get(priv, id));
+}
+
+int rsnd_mix_probe(struct rsnd_priv *priv)
+{
+ struct device_node *node;
+ struct device_node *np;
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_mix *mix;
+ struct clk *clk;
+ char name[MIX_NAME_SIZE];
+ int i, nr, ret;
+
+ /* This driver doesn't support Gen1 at this point */
+ if (rsnd_is_gen1(priv))
+ return 0;
+
+ node = rsnd_mix_of_node(priv);
+ if (!node)
+ return 0; /* not used is not error */
+
+ nr = of_get_child_count(node);
+ if (!nr) {
+ ret = -EINVAL;
+ goto rsnd_mix_probe_done;
+ }
+
+ mix = devm_kcalloc(dev, nr, sizeof(*mix), GFP_KERNEL);
+ if (!mix) {
+ ret = -ENOMEM;
+ goto rsnd_mix_probe_done;
+ }
+
+ priv->mix_nr = nr;
+ priv->mix = mix;
+
+ i = 0;
+ ret = 0;
+ for_each_child_of_node(node, np) {
+ mix = rsnd_mix_get(priv, i);
+
+ snprintf(name, MIX_NAME_SIZE, "%s.%d",
+ MIX_NAME, i);
+
+ clk = devm_clk_get(dev, name);
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ of_node_put(np);
+ goto rsnd_mix_probe_done;
+ }
+
+ ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops,
+ clk, RSND_MOD_MIX, i);
+ if (ret) {
+ of_node_put(np);
+ goto rsnd_mix_probe_done;
+ }
+
+ i++;
+ }
+
+rsnd_mix_probe_done:
+ of_node_put(node);
+
+ return ret;
+}
+
+void rsnd_mix_remove(struct rsnd_priv *priv)
+{
+ struct rsnd_mix *mix;
+ int i;
+
+ for_each_rsnd_mix(mix, priv, i) {
+ rsnd_mod_quit(rsnd_mod_get(mix));
+ }
+}
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