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@@ -0,0 +1,259 @@
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+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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+//
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+// Copyright (c) 2018 BayLibre, SAS.
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+// Author: Jerome Brunet <jbrunet@baylibre.com>
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+
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+#include <linux/module.h>
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+#include <linux/of_platform.h>
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+#include <linux/regmap.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dai.h>
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+
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+#include "axg-tdm-formatter.h"
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+
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+#define TDMOUT_CTRL0 0x00
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+#define TDMOUT_CTRL0_BITNUM_MASK GENMASK(4, 0)
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+#define TDMOUT_CTRL0_BITNUM(x) ((x) << 0)
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+#define TDMOUT_CTRL0_SLOTNUM_MASK GENMASK(9, 5)
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+#define TDMOUT_CTRL0_SLOTNUM(x) ((x) << 5)
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+#define TDMOUT_CTRL0_INIT_BITNUM_MASK GENMASK(19, 15)
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+#define TDMOUT_CTRL0_INIT_BITNUM(x) ((x) << 15)
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+#define TDMOUT_CTRL0_ENABLE BIT(31)
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+#define TDMOUT_CTRL0_RST_OUT BIT(29)
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+#define TDMOUT_CTRL0_RST_IN BIT(28)
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+#define TDMOUT_CTRL1 0x04
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+#define TDMOUT_CTRL1_TYPE_MASK GENMASK(6, 4)
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+#define TDMOUT_CTRL1_TYPE(x) ((x) << 4)
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+#define TDMOUT_CTRL1_MSB_POS_MASK GENMASK(12, 8)
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+#define TDMOUT_CTRL1_MSB_POS(x) ((x) << 8)
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+#define TDMOUT_CTRL1_SEL_SHIFT 24
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+#define TDMOUT_CTRL1_GAIN_EN 26
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+#define TDMOUT_CTRL1_WS_INV BIT(28)
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+#define TDMOUT_SWAP 0x08
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+#define TDMOUT_MASK0 0x0c
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+#define TDMOUT_MASK1 0x10
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+#define TDMOUT_MASK2 0x14
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+#define TDMOUT_MASK3 0x18
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+#define TDMOUT_STAT 0x1c
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+#define TDMOUT_GAIN0 0x20
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+#define TDMOUT_GAIN1 0x24
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+#define TDMOUT_MUTE_VAL 0x28
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+#define TDMOUT_MUTE0 0x2c
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+#define TDMOUT_MUTE1 0x30
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+#define TDMOUT_MUTE2 0x34
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+#define TDMOUT_MUTE3 0x38
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+#define TDMOUT_MASK_VAL 0x3c
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+
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+static const struct regmap_config axg_tdmout_regmap_cfg = {
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+ .reg_bits = 32,
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+ .val_bits = 32,
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+ .reg_stride = 4,
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+ .max_register = TDMOUT_MASK_VAL,
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+};
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+
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+static const struct snd_kcontrol_new axg_tdmout_controls[] = {
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+ SOC_DOUBLE("Lane 0 Volume", TDMOUT_GAIN0, 0, 8, 255, 0),
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+ SOC_DOUBLE("Lane 1 Volume", TDMOUT_GAIN0, 16, 24, 255, 0),
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+ SOC_DOUBLE("Lane 2 Volume", TDMOUT_GAIN1, 0, 8, 255, 0),
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+ SOC_DOUBLE("Lane 3 Volume", TDMOUT_GAIN1, 16, 24, 255, 0),
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+ SOC_SINGLE("Gain Enable Switch", TDMOUT_CTRL1,
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+ TDMOUT_CTRL1_GAIN_EN, 1, 0),
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+};
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+
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+static const char * const tdmout_sel_texts[] = {
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+ "IN 0", "IN 1", "IN 2",
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+};
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+
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+static SOC_ENUM_SINGLE_DECL(axg_tdmout_sel_enum, TDMOUT_CTRL1,
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+ TDMOUT_CTRL1_SEL_SHIFT, tdmout_sel_texts);
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+
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+static const struct snd_kcontrol_new axg_tdmout_in_mux =
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+ SOC_DAPM_ENUM("Input Source", axg_tdmout_sel_enum);
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+
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+static struct snd_soc_dai *
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+axg_tdmout_get_be(struct snd_soc_dapm_widget *w)
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+{
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+ struct snd_soc_dapm_path *p = NULL;
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+ struct snd_soc_dai *be;
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+
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+ snd_soc_dapm_widget_for_each_sink_path(w, p) {
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+ if (!p->connect)
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+ continue;
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+
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+ if (p->sink->id == snd_soc_dapm_dai_in)
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+ return (struct snd_soc_dai *)p->sink->priv;
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+
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+ be = axg_tdmout_get_be(p->sink);
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+ if (be)
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+ return be;
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+ }
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+
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+ return NULL;
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+}
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+
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+static struct axg_tdm_stream *
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+axg_tdmout_get_tdm_stream(struct snd_soc_dapm_widget *w)
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+{
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+ struct snd_soc_dai *be = axg_tdmout_get_be(w);
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+
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+ if (!be)
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+ return NULL;
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+
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+ return be->playback_dma_data;
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+}
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+
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+static void axg_tdmout_enable(struct regmap *map)
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+{
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+ /* Apply both reset */
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+ regmap_update_bits(map, TDMOUT_CTRL0,
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+ TDMOUT_CTRL0_RST_OUT | TDMOUT_CTRL0_RST_IN, 0);
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+
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+ /* Clear out reset before in reset */
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+ regmap_update_bits(map, TDMOUT_CTRL0,
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+ TDMOUT_CTRL0_RST_OUT, TDMOUT_CTRL0_RST_OUT);
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+ regmap_update_bits(map, TDMOUT_CTRL0,
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+ TDMOUT_CTRL0_RST_IN, TDMOUT_CTRL0_RST_IN);
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+
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+ /* Actually enable tdmout */
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+ regmap_update_bits(map, TDMOUT_CTRL0,
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+ TDMOUT_CTRL0_ENABLE, TDMOUT_CTRL0_ENABLE);
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+}
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+
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+static void axg_tdmout_disable(struct regmap *map)
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+{
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+ regmap_update_bits(map, TDMOUT_CTRL0, TDMOUT_CTRL0_ENABLE, 0);
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+}
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+
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+static int axg_tdmout_prepare(struct regmap *map, struct axg_tdm_stream *ts)
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+{
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+ unsigned int val = 0;
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+
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+ /* Set the stream skew */
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+ switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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+ case SND_SOC_DAIFMT_I2S:
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+ case SND_SOC_DAIFMT_DSP_A:
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+ val |= TDMOUT_CTRL0_INIT_BITNUM(1);
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+ break;
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+
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+ case SND_SOC_DAIFMT_LEFT_J:
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+ case SND_SOC_DAIFMT_RIGHT_J:
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+ case SND_SOC_DAIFMT_DSP_B:
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+ val |= TDMOUT_CTRL0_INIT_BITNUM(2);
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+ break;
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+
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+ default:
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+ pr_err("Unsupported format: %u\n",
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+ ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK);
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+ return -EINVAL;
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+ }
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+
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+ /* Set the slot width */
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+ val |= TDMOUT_CTRL0_BITNUM(ts->iface->slot_width - 1);
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+
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+ /* Set the slot number */
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+ val |= TDMOUT_CTRL0_SLOTNUM(ts->iface->slots - 1);
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+
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+ regmap_update_bits(map, TDMOUT_CTRL0,
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+ TDMOUT_CTRL0_INIT_BITNUM_MASK |
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+ TDMOUT_CTRL0_BITNUM_MASK |
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+ TDMOUT_CTRL0_SLOTNUM_MASK, val);
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+
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+ /* Set the sample width */
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+ val = TDMOUT_CTRL1_MSB_POS(ts->width - 1);
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+
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+ /* FIFO data are arranged in chunks of 64bits */
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+ switch (ts->physical_width) {
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+ case 8:
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+ /* 8 samples of 8 bits */
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+ val |= TDMOUT_CTRL1_TYPE(0);
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+ break;
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+ case 16:
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+ /* 4 samples of 16 bits - right justified */
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+ val |= TDMOUT_CTRL1_TYPE(2);
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+ break;
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+ case 32:
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+ /* 2 samples of 32 bits - right justified */
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+ val |= TDMOUT_CTRL1_TYPE(4);
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+ break;
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+ default:
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+ pr_err("Unsupported physical width: %u\n",
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+ ts->physical_width);
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+ return -EINVAL;
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+ }
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+
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+ /* If the sample clock is inverted, invert it back for the formatter */
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+ if (axg_tdm_lrclk_invert(ts->iface->fmt))
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+ val |= TDMOUT_CTRL1_WS_INV;
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+
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+ regmap_update_bits(map, TDMOUT_CTRL1,
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+ (TDMOUT_CTRL1_TYPE_MASK | TDMOUT_CTRL1_MSB_POS_MASK |
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+ TDMOUT_CTRL1_WS_INV), val);
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+
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+ /* Set static swap mask configuration */
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+ regmap_write(map, TDMOUT_SWAP, 0x76543210);
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+
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+ return axg_tdm_formatter_set_channel_masks(map, ts, TDMOUT_MASK0);
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+}
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+
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+static const struct snd_soc_dapm_widget axg_tdmout_dapm_widgets[] = {
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+ SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0),
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+ SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0),
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+ SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0),
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+ SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmout_in_mux),
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+ SND_SOC_DAPM_PGA_E("ENC", SND_SOC_NOPM, 0, 0, NULL, 0,
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+ axg_tdm_formatter_event,
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+ (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)),
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+ SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
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+};
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+
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+static const struct snd_soc_dapm_route axg_tdmout_dapm_routes[] = {
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+ { "SRC SEL", "IN 0", "IN 0" },
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+ { "SRC SEL", "IN 1", "IN 1" },
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+ { "SRC SEL", "IN 2", "IN 2" },
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+ { "ENC", NULL, "SRC SEL" },
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+ { "OUT", NULL, "ENC" },
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+};
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+
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+static const struct snd_soc_component_driver axg_tdmout_component_drv = {
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+ .controls = axg_tdmout_controls,
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+ .num_controls = ARRAY_SIZE(axg_tdmout_controls),
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+ .dapm_widgets = axg_tdmout_dapm_widgets,
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+ .num_dapm_widgets = ARRAY_SIZE(axg_tdmout_dapm_widgets),
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+ .dapm_routes = axg_tdmout_dapm_routes,
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+ .num_dapm_routes = ARRAY_SIZE(axg_tdmout_dapm_routes),
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+};
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+
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+static const struct axg_tdm_formatter_ops axg_tdmout_ops = {
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+ .get_stream = axg_tdmout_get_tdm_stream,
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+ .prepare = axg_tdmout_prepare,
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+ .enable = axg_tdmout_enable,
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+ .disable = axg_tdmout_disable,
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+};
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+
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+static const struct axg_tdm_formatter_driver axg_tdmout_drv = {
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+ .component_drv = &axg_tdmout_component_drv,
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+ .regmap_cfg = &axg_tdmout_regmap_cfg,
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+ .ops = &axg_tdmout_ops,
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+ .invert_sclk = true,
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+};
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+
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+static const struct of_device_id axg_tdmout_of_match[] = {
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+ {
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+ .compatible = "amlogic,axg-tdmout",
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+ .data = &axg_tdmout_drv,
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+ }, {}
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+};
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+MODULE_DEVICE_TABLE(of, axg_tdmout_of_match);
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+
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+static struct platform_driver axg_tdmout_pdrv = {
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+ .probe = axg_tdm_formatter_probe,
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+ .driver = {
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+ .name = "axg-tdmout",
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+ .of_match_table = axg_tdmout_of_match,
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+ },
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+};
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+module_platform_driver(axg_tdmout_pdrv);
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+
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+MODULE_DESCRIPTION("Amlogic AXG TDM output formatter driver");
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+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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+MODULE_LICENSE("GPL v2");
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