349 lines
11 KiB
C
349 lines
11 KiB
C
// 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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/* This driver implements the frontend capture DAI of AXG based SoCs */
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#include <linux/clk.h>
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#include <linux/regmap.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include "axg-fifo.h"
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#define CTRL0_TODDR_SEL_RESAMPLE BIT(30)
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#define CTRL0_TODDR_EXT_SIGNED BIT(29)
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#define CTRL0_TODDR_PP_MODE BIT(28)
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#define CTRL0_TODDR_SYNC_CH BIT(27)
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#define CTRL0_TODDR_TYPE_MASK GENMASK(15, 13)
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#define CTRL0_TODDR_TYPE(x) ((x) << 13)
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#define CTRL0_TODDR_MSB_POS_MASK GENMASK(12, 8)
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#define CTRL0_TODDR_MSB_POS(x) ((x) << 8)
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#define CTRL0_TODDR_LSB_POS_MASK GENMASK(7, 3)
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#define CTRL0_TODDR_LSB_POS(x) ((x) << 3)
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#define CTRL1_TODDR_FORCE_FINISH BIT(25)
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#define CTRL1_SEL_SHIFT 28
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#define TODDR_MSB_POS 31
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static int axg_toddr_pcm_new(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_dai *dai)
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{
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return axg_fifo_pcm_new(rtd, SNDRV_PCM_STREAM_CAPTURE);
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}
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static int g12a_toddr_dai_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
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/* Reset the write pointer to the FIFO_INIT_ADDR */
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regmap_update_bits(fifo->map, FIFO_CTRL1,
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CTRL1_TODDR_FORCE_FINISH, 0);
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regmap_update_bits(fifo->map, FIFO_CTRL1,
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CTRL1_TODDR_FORCE_FINISH, CTRL1_TODDR_FORCE_FINISH);
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regmap_update_bits(fifo->map, FIFO_CTRL1,
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CTRL1_TODDR_FORCE_FINISH, 0);
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return 0;
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}
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static int axg_toddr_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
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unsigned int type, width;
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switch (params_physical_width(params)) {
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case 8:
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type = 0; /* 8 samples of 8 bits */
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break;
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case 16:
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type = 2; /* 4 samples of 16 bits - right justified */
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break;
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case 32:
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type = 4; /* 2 samples of 32 bits - right justified */
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break;
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default:
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return -EINVAL;
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}
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width = params_width(params);
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regmap_update_bits(fifo->map, FIFO_CTRL0,
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CTRL0_TODDR_TYPE_MASK |
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CTRL0_TODDR_MSB_POS_MASK |
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CTRL0_TODDR_LSB_POS_MASK,
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CTRL0_TODDR_TYPE(type) |
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CTRL0_TODDR_MSB_POS(TODDR_MSB_POS) |
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CTRL0_TODDR_LSB_POS(TODDR_MSB_POS - (width - 1)));
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return 0;
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}
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static int axg_toddr_dai_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
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int ret;
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/* Enable pclk to access registers and clock the fifo ip */
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ret = clk_prepare_enable(fifo->pclk);
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if (ret)
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return ret;
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/* Select orginal data - resampling not supported ATM */
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regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_SEL_RESAMPLE, 0);
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/* Only signed format are supported ATM */
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regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_EXT_SIGNED,
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CTRL0_TODDR_EXT_SIGNED);
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/* Apply single buffer mode to the interface */
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regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_PP_MODE, 0);
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return 0;
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}
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static void axg_toddr_dai_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
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clk_disable_unprepare(fifo->pclk);
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}
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static const struct snd_soc_dai_ops axg_toddr_ops = {
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.hw_params = axg_toddr_dai_hw_params,
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.startup = axg_toddr_dai_startup,
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.shutdown = axg_toddr_dai_shutdown,
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};
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static struct snd_soc_dai_driver axg_toddr_dai_drv = {
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.name = "TODDR",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = AXG_FIFO_CH_MAX,
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.rates = AXG_FIFO_RATES,
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.formats = AXG_FIFO_FORMATS,
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},
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.ops = &axg_toddr_ops,
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.pcm_new = axg_toddr_pcm_new,
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};
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static const char * const axg_toddr_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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};
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static SOC_ENUM_SINGLE_DECL(axg_toddr_sel_enum, FIFO_CTRL0, CTRL0_SEL_SHIFT,
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axg_toddr_sel_texts);
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static const struct snd_kcontrol_new axg_toddr_in_mux =
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SOC_DAPM_ENUM("Input Source", axg_toddr_sel_enum);
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static const struct snd_soc_dapm_widget axg_toddr_dapm_widgets[] = {
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SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_toddr_in_mux),
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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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};
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static const struct snd_soc_dapm_route axg_toddr_dapm_routes[] = {
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{ "Capture", NULL, "SRC SEL" },
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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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};
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static const struct snd_soc_component_driver axg_toddr_component_drv = {
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.dapm_widgets = axg_toddr_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(axg_toddr_dapm_widgets),
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.dapm_routes = axg_toddr_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(axg_toddr_dapm_routes),
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.open = axg_fifo_pcm_open,
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.close = axg_fifo_pcm_close,
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.hw_params = axg_fifo_pcm_hw_params,
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.hw_free = axg_fifo_pcm_hw_free,
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.pointer = axg_fifo_pcm_pointer,
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.trigger = axg_fifo_pcm_trigger,
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};
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static const struct axg_fifo_match_data axg_toddr_match_data = {
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.field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23),
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.component_drv = &axg_toddr_component_drv,
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.dai_drv = &axg_toddr_dai_drv
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};
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static int g12a_toddr_dai_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
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int ret;
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ret = axg_toddr_dai_startup(substream, dai);
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if (ret)
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return ret;
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/*
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* Make sure the first channel ends up in the at beginning of the output
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* As weird as it looks, without this the first channel may be misplaced
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* in memory, with a random shift of 2 channels.
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*/
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regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_TODDR_SYNC_CH,
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CTRL0_TODDR_SYNC_CH);
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return 0;
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}
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static const struct snd_soc_dai_ops g12a_toddr_ops = {
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.prepare = g12a_toddr_dai_prepare,
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.hw_params = axg_toddr_dai_hw_params,
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.startup = g12a_toddr_dai_startup,
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.shutdown = axg_toddr_dai_shutdown,
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};
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static struct snd_soc_dai_driver g12a_toddr_dai_drv = {
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.name = "TODDR",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = AXG_FIFO_CH_MAX,
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.rates = AXG_FIFO_RATES,
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.formats = AXG_FIFO_FORMATS,
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},
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.ops = &g12a_toddr_ops,
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.pcm_new = axg_toddr_pcm_new,
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};
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static const struct snd_soc_component_driver g12a_toddr_component_drv = {
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.dapm_widgets = axg_toddr_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(axg_toddr_dapm_widgets),
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.dapm_routes = axg_toddr_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(axg_toddr_dapm_routes),
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.open = axg_fifo_pcm_open,
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.close = axg_fifo_pcm_close,
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.hw_params = g12a_fifo_pcm_hw_params,
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.hw_free = axg_fifo_pcm_hw_free,
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.pointer = axg_fifo_pcm_pointer,
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.trigger = axg_fifo_pcm_trigger,
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};
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static const struct axg_fifo_match_data g12a_toddr_match_data = {
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.field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23),
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.component_drv = &g12a_toddr_component_drv,
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.dai_drv = &g12a_toddr_dai_drv
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};
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static const char * const sm1_toddr_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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static SOC_ENUM_SINGLE_DECL(sm1_toddr_sel_enum, FIFO_CTRL1, CTRL1_SEL_SHIFT,
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sm1_toddr_sel_texts);
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static const struct snd_kcontrol_new sm1_toddr_in_mux =
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SOC_DAPM_ENUM("Input Source", sm1_toddr_sel_enum);
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static const struct snd_soc_dapm_widget sm1_toddr_dapm_widgets[] = {
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SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &sm1_toddr_in_mux),
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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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};
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static const struct snd_soc_dapm_route sm1_toddr_dapm_routes[] = {
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{ "Capture", NULL, "SRC SEL" },
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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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};
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static const struct snd_soc_component_driver sm1_toddr_component_drv = {
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.dapm_widgets = sm1_toddr_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(sm1_toddr_dapm_widgets),
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.dapm_routes = sm1_toddr_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(sm1_toddr_dapm_routes),
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.open = axg_fifo_pcm_open,
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.close = axg_fifo_pcm_close,
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.hw_params = g12a_fifo_pcm_hw_params,
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.hw_free = axg_fifo_pcm_hw_free,
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.pointer = axg_fifo_pcm_pointer,
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.trigger = axg_fifo_pcm_trigger,
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};
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static const struct axg_fifo_match_data sm1_toddr_match_data = {
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.field_threshold = REG_FIELD(FIFO_CTRL1, 12, 23),
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.component_drv = &sm1_toddr_component_drv,
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.dai_drv = &g12a_toddr_dai_drv
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};
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static const struct of_device_id axg_toddr_of_match[] = {
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{
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.compatible = "amlogic,axg-toddr",
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.data = &axg_toddr_match_data,
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}, {
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.compatible = "amlogic,g12a-toddr",
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.data = &g12a_toddr_match_data,
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}, {
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.compatible = "amlogic,sm1-toddr",
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.data = &sm1_toddr_match_data,
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}, {}
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};
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MODULE_DEVICE_TABLE(of, axg_toddr_of_match);
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static struct platform_driver axg_toddr_pdrv = {
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.probe = axg_fifo_probe,
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.driver = {
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.name = "axg-toddr",
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.of_match_table = axg_toddr_of_match,
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},
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};
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module_platform_driver(axg_toddr_pdrv);
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MODULE_DESCRIPTION("Amlogic AXG capture fifo driver");
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MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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MODULE_LICENSE("GPL v2");
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