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260 lines
7.5 KiB
260 lines
7.5 KiB
// 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 <[email protected]> |
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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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#include "axg-tdm-formatter.h" |
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#define TDMIN_CTRL 0x00 |
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#define TDMIN_CTRL_ENABLE BIT(31) |
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#define TDMIN_CTRL_I2S_MODE BIT(30) |
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#define TDMIN_CTRL_RST_OUT BIT(29) |
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#define TDMIN_CTRL_RST_IN BIT(28) |
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#define TDMIN_CTRL_WS_INV BIT(25) |
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#define TDMIN_CTRL_SEL_SHIFT 20 |
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#define TDMIN_CTRL_IN_BIT_SKEW_MASK GENMASK(18, 16) |
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#define TDMIN_CTRL_IN_BIT_SKEW(x) ((x) << 16) |
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#define TDMIN_CTRL_LSB_FIRST BIT(5) |
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#define TDMIN_CTRL_BITNUM_MASK GENMASK(4, 0) |
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#define TDMIN_CTRL_BITNUM(x) ((x) << 0) |
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#define TDMIN_SWAP 0x04 |
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#define TDMIN_MASK0 0x08 |
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#define TDMIN_MASK1 0x0c |
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#define TDMIN_MASK2 0x10 |
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#define TDMIN_MASK3 0x14 |
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#define TDMIN_STAT 0x18 |
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#define TDMIN_MUTE_VAL 0x1c |
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#define TDMIN_MUTE0 0x20 |
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#define TDMIN_MUTE1 0x24 |
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#define TDMIN_MUTE2 0x28 |
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#define TDMIN_MUTE3 0x2c |
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static const struct regmap_config axg_tdmin_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 = TDMIN_MUTE3, |
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}; |
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static const char * const axg_tdmin_sel_texts[] = { |
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"IN 0", "IN 1", "IN 2", "IN 3", "IN 4", "IN 5", "IN 6", "IN 7", |
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"IN 8", "IN 9", "IN 10", "IN 11", "IN 12", "IN 13", "IN 14", "IN 15", |
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}; |
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/* Change to special mux control to reset dapm */ |
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static SOC_ENUM_SINGLE_DECL(axg_tdmin_sel_enum, TDMIN_CTRL, |
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TDMIN_CTRL_SEL_SHIFT, axg_tdmin_sel_texts); |
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static const struct snd_kcontrol_new axg_tdmin_in_mux = |
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SOC_DAPM_ENUM("Input Source", axg_tdmin_sel_enum); |
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static struct snd_soc_dai * |
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axg_tdmin_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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snd_soc_dapm_widget_for_each_source_path(w, p) { |
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if (!p->connect) |
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continue; |
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if (p->source->id == snd_soc_dapm_dai_out) |
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return (struct snd_soc_dai *)p->source->priv; |
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be = axg_tdmin_get_be(p->source); |
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if (be) |
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return be; |
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} |
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return NULL; |
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} |
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static struct axg_tdm_stream * |
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axg_tdmin_get_tdm_stream(struct snd_soc_dapm_widget *w) |
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{ |
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struct snd_soc_dai *be = axg_tdmin_get_be(w); |
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if (!be) |
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return NULL; |
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return be->capture_dma_data; |
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} |
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static void axg_tdmin_enable(struct regmap *map) |
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{ |
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/* Apply both reset */ |
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regmap_update_bits(map, TDMIN_CTRL, |
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TDMIN_CTRL_RST_OUT | TDMIN_CTRL_RST_IN, 0); |
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/* Clear out reset before in reset */ |
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regmap_update_bits(map, TDMIN_CTRL, |
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TDMIN_CTRL_RST_OUT, TDMIN_CTRL_RST_OUT); |
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regmap_update_bits(map, TDMIN_CTRL, |
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TDMIN_CTRL_RST_IN, TDMIN_CTRL_RST_IN); |
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/* Actually enable tdmin */ |
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regmap_update_bits(map, TDMIN_CTRL, |
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TDMIN_CTRL_ENABLE, TDMIN_CTRL_ENABLE); |
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} |
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static void axg_tdmin_disable(struct regmap *map) |
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{ |
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regmap_update_bits(map, TDMIN_CTRL, TDMIN_CTRL_ENABLE, 0); |
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} |
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static int axg_tdmin_prepare(struct regmap *map, |
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const struct axg_tdm_formatter_hw *quirks, |
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struct axg_tdm_stream *ts) |
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{ |
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unsigned int val, skew = quirks->skew_offset; |
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/* Set 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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skew += 1; |
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break; |
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case SND_SOC_DAIFMT_LEFT_J: |
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case SND_SOC_DAIFMT_DSP_B: |
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break; |
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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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val = TDMIN_CTRL_IN_BIT_SKEW(skew); |
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/* Set stream format mode */ |
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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_LEFT_J: |
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case SND_SOC_DAIFMT_RIGHT_J: |
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val |= TDMIN_CTRL_I2S_MODE; |
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break; |
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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 |= TDMIN_CTRL_WS_INV; |
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/* Set the slot width */ |
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val |= TDMIN_CTRL_BITNUM(ts->iface->slot_width - 1); |
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/* |
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* The following also reset LSB_FIRST which result in the formatter |
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* placing the first bit received at bit 31 |
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*/ |
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regmap_update_bits(map, TDMIN_CTRL, |
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(TDMIN_CTRL_IN_BIT_SKEW_MASK | TDMIN_CTRL_WS_INV | |
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TDMIN_CTRL_I2S_MODE | TDMIN_CTRL_LSB_FIRST | |
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TDMIN_CTRL_BITNUM_MASK), val); |
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/* Set static swap mask configuration */ |
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regmap_write(map, TDMIN_SWAP, 0x76543210); |
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return axg_tdm_formatter_set_channel_masks(map, ts, TDMIN_MASK0); |
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} |
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static const struct snd_soc_dapm_widget axg_tdmin_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_AIF_IN("IN 3", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 4", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 5", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 6", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 7", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 8", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 9", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 10", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 11", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 12", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 13", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 14", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("IN 15", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmin_in_mux), |
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SND_SOC_DAPM_PGA_E("DEC", 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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static const struct snd_soc_dapm_route axg_tdmin_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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{ "SRC SEL", "IN 3", "IN 3" }, |
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{ "SRC SEL", "IN 4", "IN 4" }, |
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{ "SRC SEL", "IN 5", "IN 5" }, |
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{ "SRC SEL", "IN 6", "IN 6" }, |
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{ "SRC SEL", "IN 7", "IN 7" }, |
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{ "SRC SEL", "IN 8", "IN 8" }, |
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{ "SRC SEL", "IN 9", "IN 9" }, |
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{ "SRC SEL", "IN 10", "IN 10" }, |
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{ "SRC SEL", "IN 11", "IN 11" }, |
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{ "SRC SEL", "IN 12", "IN 12" }, |
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{ "SRC SEL", "IN 13", "IN 13" }, |
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{ "SRC SEL", "IN 14", "IN 14" }, |
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{ "SRC SEL", "IN 15", "IN 15" }, |
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{ "DEC", NULL, "SRC SEL" }, |
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{ "OUT", NULL, "DEC" }, |
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}; |
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static const struct snd_soc_component_driver axg_tdmin_component_drv = { |
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.dapm_widgets = axg_tdmin_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(axg_tdmin_dapm_widgets), |
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.dapm_routes = axg_tdmin_dapm_routes, |
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.num_dapm_routes = ARRAY_SIZE(axg_tdmin_dapm_routes), |
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}; |
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static const struct axg_tdm_formatter_ops axg_tdmin_ops = { |
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.get_stream = axg_tdmin_get_tdm_stream, |
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.prepare = axg_tdmin_prepare, |
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.enable = axg_tdmin_enable, |
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.disable = axg_tdmin_disable, |
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}; |
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static const struct axg_tdm_formatter_driver axg_tdmin_drv = { |
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.component_drv = &axg_tdmin_component_drv, |
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.regmap_cfg = &axg_tdmin_regmap_cfg, |
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.ops = &axg_tdmin_ops, |
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.quirks = &(const struct axg_tdm_formatter_hw) { |
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.skew_offset = 3, |
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}, |
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}; |
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static const struct of_device_id axg_tdmin_of_match[] = { |
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{ |
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.compatible = "amlogic,axg-tdmin", |
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.data = &axg_tdmin_drv, |
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}, { |
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.compatible = "amlogic,g12a-tdmin", |
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.data = &axg_tdmin_drv, |
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}, { |
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.compatible = "amlogic,sm1-tdmin", |
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.data = &axg_tdmin_drv, |
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}, {} |
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}; |
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MODULE_DEVICE_TABLE(of, axg_tdmin_of_match); |
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static struct platform_driver axg_tdmin_pdrv = { |
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.probe = axg_tdm_formatter_probe, |
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.driver = { |
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.name = "axg-tdmin", |
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.of_match_table = axg_tdmin_of_match, |
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}, |
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}; |
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module_platform_driver(axg_tdmin_pdrv); |
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MODULE_DESCRIPTION("Amlogic AXG TDM input formatter driver"); |
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MODULE_AUTHOR("Jerome Brunet <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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