Merge tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There are no big surprising changes in this cycle, yet not too boring,
  either. The biggest change from diffstat POV is the removal of the
  legacy OSS driver codes that have been already disabled for a long
  time. This will bring a few trivial merge conflicts.

  As new features in ASoC side, there are two things: a new AC97 bus
  implementation and AMD Stony platform support. Both include the
  relevant changes shared with other subsystems, e.g. AC97 MFD changes
  and DRM AMD changes.

  Some other highlighted topics are:

   - A bunch of USB-audio drivers got the hardening against the
     malicious device accesses with a new helper code for endpoint
     sanity check

   - Lots of cleanups for ASoC Intel platform code, including support
     for their open source audio firmware

   - Continued ASoC core componentization works

   - Support for scaling MCLK with sample rate in ASoC simple-card

   - Stabler PCM hot-unplug capability, especially for ASoC usages"

* tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (302 commits)
  Documentation: sound: hd-audio: notes.rst
  ASoC: bcm2835: Support left/right justified and DSP modes
  ASoC: bcm2835: Enforce full symmetry
  ASoC: bcm2835: Support additional samplerates up to 384kHz
  ASoC: bcm2835: Add support for TDM modes
  ASoC: add mclk-fs support to audio graph card
  ASoC: add mclk-fs to audio graph card binding
  ASoC: rt5514: work around link error
  ASoC: rt5514: mark PM functions as __maybe_unused
  ASoC: rt5663: Check the JD status in the button pushing
  ASoC: amd: Modified DMA transfer Mechanism for Playback
  ASoC: rt5645: Wait for 400msec before concluding on value of RT5645_VENDOR_ID2
  ASoC: sun4i-codec: fixed 32bit audio capture support for H3/H2+
  ASoC: da7213: add support for DSP modes
  ASoC: sun8i-codec: Add a comment on the LRCK inversion
  ASoC: sun8i-codec: Set the BCLK divider
  ASoC: rt5663: Delay and retry reading rt5663 ID register
  ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds
  ASoC: cs42l56: Fix reset GPIO name in example DT binding
  ASoC: rt5514-spi: check irq status to schedule data copy in resume function
  ...

1 files changed, 152 insertions, 6 deletions

diff --git a/sound/soc/sh/rcar/mix.c b/sound/soc/sh/rcar/mix.c
index 6c4826c189a4..7998380766f6 100644
--- a/sound/soc/sh/rcar/mix.c
+++ b/sound/soc/sh/rcar/mix.c
@@ -7,6 +7,33 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
+/*
+ *		    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
@@ -14,8 +41,27 @@
 
 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)					\
@@ -36,26 +82,43 @@ static void rsnd_mix_halt(struct rsnd_mod *mod)
 	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)
 {
-	rsnd_mod_write(mod, MIX_MDBAR, 0);
-	rsnd_mod_write(mod, MIX_MDBBR, 0);
-	rsnd_mod_write(mod, MIX_MDBCR, 0);
-	rsnd_mod_write(mod, MIX_MDBDR, 0);
+	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, 0);
-	rsnd_mod_write(mod, MIX_MVPDR, 0);
+	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);
@@ -109,11 +172,94 @@ static int rsnd_mix_quit(struct rsnd_mod *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;
+}
+
 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,
 };
 
 struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)