824 lines
21 KiB
C
824 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright 2018 NXP
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <linux/kobject.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/sysfs.h>
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#include <linux/types.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include <sound/core.h>
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#include "fsl_micfil.h"
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#include "imx-pcm.h"
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#define FSL_MICFIL_RATES SNDRV_PCM_RATE_8000_48000
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#define FSL_MICFIL_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
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struct fsl_micfil {
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struct platform_device *pdev;
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struct regmap *regmap;
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const struct fsl_micfil_soc_data *soc;
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struct clk *mclk;
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struct snd_dmaengine_dai_dma_data dma_params_rx;
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unsigned int dataline;
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char name[32];
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int irq[MICFIL_IRQ_LINES];
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unsigned int mclk_streams;
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int quality; /*QUALITY 2-0 bits */
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bool slave_mode;
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int channel_gain[8];
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};
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struct fsl_micfil_soc_data {
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unsigned int fifos;
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unsigned int fifo_depth;
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unsigned int dataline;
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bool imx;
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};
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static struct fsl_micfil_soc_data fsl_micfil_imx8mm = {
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.imx = true,
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.fifos = 8,
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.fifo_depth = 8,
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.dataline = 0xf,
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};
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static const struct of_device_id fsl_micfil_dt_ids[] = {
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{ .compatible = "fsl,imx8mm-micfil", .data = &fsl_micfil_imx8mm },
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{}
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};
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MODULE_DEVICE_TABLE(of, fsl_micfil_dt_ids);
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/* Table 5. Quality Modes
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* Medium 0 0 0
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* High 0 0 1
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* Very Low 2 1 0 0
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* Very Low 1 1 0 1
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* Very Low 0 1 1 0
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* Low 1 1 1
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*/
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static const char * const micfil_quality_select_texts[] = {
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"Medium", "High",
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"N/A", "N/A",
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"VLow2", "VLow1",
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"VLow0", "Low",
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};
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static const struct soc_enum fsl_micfil_quality_enum =
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SOC_ENUM_SINGLE(REG_MICFIL_CTRL2,
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MICFIL_CTRL2_QSEL_SHIFT,
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ARRAY_SIZE(micfil_quality_select_texts),
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micfil_quality_select_texts);
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static DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0);
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static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
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SOC_SINGLE_SX_TLV("CH0 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(0), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH1 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(1), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH2 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(2), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH3 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(3), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH4 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(4), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH5 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(5), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH6 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(6), 0xF, 0x7, gain_tlv),
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SOC_SINGLE_SX_TLV("CH7 Volume", REG_MICFIL_OUT_CTRL,
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MICFIL_OUTGAIN_CHX_SHIFT(7), 0xF, 0x7, gain_tlv),
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SOC_ENUM_EXT("MICFIL Quality Select",
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fsl_micfil_quality_enum,
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snd_soc_get_enum_double, snd_soc_put_enum_double),
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};
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static inline int get_pdm_clk(struct fsl_micfil *micfil,
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unsigned int rate)
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{
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u32 ctrl2_reg;
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int qsel, osr;
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int bclk;
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regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
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osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK)
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>> MICFIL_CTRL2_CICOSR_SHIFT);
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regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
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qsel = ctrl2_reg & MICFIL_CTRL2_QSEL_MASK;
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switch (qsel) {
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case MICFIL_HIGH_QUALITY:
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bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */
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break;
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case MICFIL_MEDIUM_QUALITY:
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case MICFIL_VLOW0_QUALITY:
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bclk = rate * 4 * osr * 1; /* kfactor = 1 */
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break;
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case MICFIL_LOW_QUALITY:
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case MICFIL_VLOW1_QUALITY:
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bclk = rate * 2 * osr * 2; /* kfactor = 2 */
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break;
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case MICFIL_VLOW2_QUALITY:
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bclk = rate * osr * 4; /* kfactor = 4 */
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break;
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default:
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dev_err(&micfil->pdev->dev,
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"Please make sure you select a valid quality.\n");
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bclk = -1;
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break;
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}
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return bclk;
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}
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static inline int get_clk_div(struct fsl_micfil *micfil,
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unsigned int rate)
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{
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u32 ctrl2_reg;
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long mclk_rate;
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int clk_div;
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regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
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mclk_rate = clk_get_rate(micfil->mclk);
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clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2);
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return clk_div;
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}
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/* The SRES is a self-negated bit which provides the CPU with the
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* capability to initialize the PDM Interface module through the
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* slave-bus interface. This bit always reads as zero, and this
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* bit is only effective when MDIS is cleared
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*/
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static int fsl_micfil_reset(struct device *dev)
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{
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struct fsl_micfil *micfil = dev_get_drvdata(dev);
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int ret;
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ret = regmap_update_bits(micfil->regmap,
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REG_MICFIL_CTRL1,
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MICFIL_CTRL1_MDIS_MASK,
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0);
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if (ret) {
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dev_err(dev, "failed to clear MDIS bit %d\n", ret);
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return ret;
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}
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ret = regmap_update_bits(micfil->regmap,
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REG_MICFIL_CTRL1,
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MICFIL_CTRL1_SRES_MASK,
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MICFIL_CTRL1_SRES);
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if (ret) {
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dev_err(dev, "failed to reset MICFIL: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int fsl_micfil_set_mclk_rate(struct fsl_micfil *micfil,
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unsigned int freq)
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{
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struct device *dev = &micfil->pdev->dev;
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int ret;
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clk_disable_unprepare(micfil->mclk);
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ret = clk_set_rate(micfil->mclk, freq * 1024);
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if (ret)
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dev_warn(dev, "failed to set rate (%u): %d\n",
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freq * 1024, ret);
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clk_prepare_enable(micfil->mclk);
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return ret;
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}
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static int fsl_micfil_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
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if (!micfil) {
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dev_err(dai->dev,
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"micfil dai priv_data not set\n");
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return -EINVAL;
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}
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return 0;
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}
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static int fsl_micfil_trigger(struct snd_pcm_substream *substream, int cmd,
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struct snd_soc_dai *dai)
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{
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struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
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struct device *dev = &micfil->pdev->dev;
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int ret;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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ret = fsl_micfil_reset(dev);
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if (ret) {
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dev_err(dev, "failed to soft reset\n");
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return ret;
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}
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/* DMA Interrupt Selection - DISEL bits
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* 00 - DMA and IRQ disabled
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* 01 - DMA req enabled
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* 10 - IRQ enabled
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* 11 - reserved
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*/
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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MICFIL_CTRL1_DISEL_MASK,
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(1 << MICFIL_CTRL1_DISEL_SHIFT));
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if (ret) {
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dev_err(dev, "failed to update DISEL bits\n");
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return ret;
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}
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/* Enable the module */
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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MICFIL_CTRL1_PDMIEN_MASK,
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MICFIL_CTRL1_PDMIEN);
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if (ret) {
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dev_err(dev, "failed to enable the module\n");
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return ret;
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}
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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/* Disable the module */
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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MICFIL_CTRL1_PDMIEN_MASK,
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0);
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if (ret) {
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dev_err(dev, "failed to enable the module\n");
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return ret;
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}
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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MICFIL_CTRL1_DISEL_MASK,
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(0 << MICFIL_CTRL1_DISEL_SHIFT));
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if (ret) {
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dev_err(dev, "failed to update DISEL bits\n");
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return ret;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int fsl_set_clock_params(struct device *dev, unsigned int rate)
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{
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struct fsl_micfil *micfil = dev_get_drvdata(dev);
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int clk_div;
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int ret = 0;
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ret = fsl_micfil_set_mclk_rate(micfil, rate);
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if (ret < 0)
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dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
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clk_get_rate(micfil->mclk), rate);
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/* set CICOSR */
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ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
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MICFIL_CTRL2_CICOSR_MASK,
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MICFIL_CTRL2_OSR_DEFAULT);
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if (ret)
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dev_err(dev, "failed to set CICOSR in reg 0x%X\n",
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REG_MICFIL_CTRL2);
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/* set CLK_DIV */
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clk_div = get_clk_div(micfil, rate);
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if (clk_div < 0)
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ret = -EINVAL;
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ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
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MICFIL_CTRL2_CLKDIV_MASK, clk_div);
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if (ret)
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dev_err(dev, "failed to set CLKDIV in reg 0x%X\n",
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REG_MICFIL_CTRL2);
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return ret;
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}
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static int fsl_micfil_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 fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
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unsigned int channels = params_channels(params);
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unsigned int rate = params_rate(params);
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struct device *dev = &micfil->pdev->dev;
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int ret;
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/* 1. Disable the module */
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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MICFIL_CTRL1_PDMIEN_MASK, 0);
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if (ret) {
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dev_err(dev, "failed to disable the module\n");
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return ret;
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}
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/* enable channels */
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
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0xFF, ((1 << channels) - 1));
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if (ret) {
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dev_err(dev, "failed to enable channels %d, reg 0x%X\n", ret,
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REG_MICFIL_CTRL1);
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return ret;
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}
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ret = fsl_set_clock_params(dev, rate);
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if (ret < 0) {
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dev_err(dev, "Failed to set clock parameters [%d]\n", ret);
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return ret;
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}
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micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;
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return 0;
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}
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static int fsl_micfil_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
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unsigned int freq, int dir)
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{
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struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
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struct device *dev = &micfil->pdev->dev;
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int ret;
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if (!freq)
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return 0;
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ret = fsl_micfil_set_mclk_rate(micfil, freq);
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if (ret < 0)
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dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
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clk_get_rate(micfil->mclk), freq);
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return ret;
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}
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static struct snd_soc_dai_ops fsl_micfil_dai_ops = {
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.startup = fsl_micfil_startup,
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.trigger = fsl_micfil_trigger,
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.hw_params = fsl_micfil_hw_params,
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.set_sysclk = fsl_micfil_set_dai_sysclk,
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};
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static int fsl_micfil_dai_probe(struct snd_soc_dai *cpu_dai)
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{
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struct fsl_micfil *micfil = dev_get_drvdata(cpu_dai->dev);
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struct device *dev = cpu_dai->dev;
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unsigned int val;
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int ret;
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int i;
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/* set qsel to medium */
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
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MICFIL_CTRL2_QSEL_MASK, MICFIL_MEDIUM_QUALITY);
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if (ret) {
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dev_err(dev, "failed to set quality mode bits, reg 0x%X\n",
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REG_MICFIL_CTRL2);
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return ret;
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}
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/* set default gain to max_gain */
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regmap_write(micfil->regmap, REG_MICFIL_OUT_CTRL, 0x77777777);
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for (i = 0; i < 8; i++)
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micfil->channel_gain[i] = 0xF;
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snd_soc_dai_init_dma_data(cpu_dai, NULL,
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&micfil->dma_params_rx);
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/* FIFO Watermark Control - FIFOWMK*/
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val = MICFIL_FIFO_CTRL_FIFOWMK(micfil->soc->fifo_depth) - 1;
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ret = regmap_update_bits(micfil->regmap, REG_MICFIL_FIFO_CTRL,
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MICFIL_FIFO_CTRL_FIFOWMK_MASK,
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val);
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if (ret) {
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dev_err(dev, "failed to set FIFOWMK\n");
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return ret;
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}
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snd_soc_dai_set_drvdata(cpu_dai, micfil);
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return 0;
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}
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static struct snd_soc_dai_driver fsl_micfil_dai = {
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.probe = fsl_micfil_dai_probe,
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.capture = {
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.stream_name = "CPU-Capture",
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.channels_min = 1,
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.channels_max = 8,
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.rates = FSL_MICFIL_RATES,
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.formats = FSL_MICFIL_FORMATS,
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},
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.ops = &fsl_micfil_dai_ops,
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};
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static const struct snd_soc_component_driver fsl_micfil_component = {
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.name = "fsl-micfil-dai",
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.controls = fsl_micfil_snd_controls,
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.num_controls = ARRAY_SIZE(fsl_micfil_snd_controls),
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};
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/* REGMAP */
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static const struct reg_default fsl_micfil_reg_defaults[] = {
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{REG_MICFIL_CTRL1, 0x00000000},
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{REG_MICFIL_CTRL2, 0x00000000},
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{REG_MICFIL_STAT, 0x00000000},
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{REG_MICFIL_FIFO_CTRL, 0x00000007},
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{REG_MICFIL_FIFO_STAT, 0x00000000},
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{REG_MICFIL_DATACH0, 0x00000000},
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{REG_MICFIL_DATACH1, 0x00000000},
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{REG_MICFIL_DATACH2, 0x00000000},
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{REG_MICFIL_DATACH3, 0x00000000},
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{REG_MICFIL_DATACH4, 0x00000000},
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{REG_MICFIL_DATACH5, 0x00000000},
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{REG_MICFIL_DATACH6, 0x00000000},
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{REG_MICFIL_DATACH7, 0x00000000},
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{REG_MICFIL_DC_CTRL, 0x00000000},
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{REG_MICFIL_OUT_CTRL, 0x00000000},
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{REG_MICFIL_OUT_STAT, 0x00000000},
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{REG_MICFIL_VAD0_CTRL1, 0x00000000},
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{REG_MICFIL_VAD0_CTRL2, 0x000A0000},
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{REG_MICFIL_VAD0_STAT, 0x00000000},
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{REG_MICFIL_VAD0_SCONFIG, 0x00000000},
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{REG_MICFIL_VAD0_NCONFIG, 0x80000000},
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{REG_MICFIL_VAD0_NDATA, 0x00000000},
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{REG_MICFIL_VAD0_ZCD, 0x00000004},
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};
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static bool fsl_micfil_readable_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
|
|
case REG_MICFIL_CTRL1:
|
|
case REG_MICFIL_CTRL2:
|
|
case REG_MICFIL_STAT:
|
|
case REG_MICFIL_FIFO_CTRL:
|
|
case REG_MICFIL_FIFO_STAT:
|
|
case REG_MICFIL_DATACH0:
|
|
case REG_MICFIL_DATACH1:
|
|
case REG_MICFIL_DATACH2:
|
|
case REG_MICFIL_DATACH3:
|
|
case REG_MICFIL_DATACH4:
|
|
case REG_MICFIL_DATACH5:
|
|
case REG_MICFIL_DATACH6:
|
|
case REG_MICFIL_DATACH7:
|
|
case REG_MICFIL_DC_CTRL:
|
|
case REG_MICFIL_OUT_CTRL:
|
|
case REG_MICFIL_OUT_STAT:
|
|
case REG_MICFIL_VAD0_CTRL1:
|
|
case REG_MICFIL_VAD0_CTRL2:
|
|
case REG_MICFIL_VAD0_STAT:
|
|
case REG_MICFIL_VAD0_SCONFIG:
|
|
case REG_MICFIL_VAD0_NCONFIG:
|
|
case REG_MICFIL_VAD0_NDATA:
|
|
case REG_MICFIL_VAD0_ZCD:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool fsl_micfil_writeable_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case REG_MICFIL_CTRL1:
|
|
case REG_MICFIL_CTRL2:
|
|
case REG_MICFIL_STAT: /* Write 1 to Clear */
|
|
case REG_MICFIL_FIFO_CTRL:
|
|
case REG_MICFIL_FIFO_STAT: /* Write 1 to Clear */
|
|
case REG_MICFIL_DC_CTRL:
|
|
case REG_MICFIL_OUT_CTRL:
|
|
case REG_MICFIL_OUT_STAT: /* Write 1 to Clear */
|
|
case REG_MICFIL_VAD0_CTRL1:
|
|
case REG_MICFIL_VAD0_CTRL2:
|
|
case REG_MICFIL_VAD0_STAT: /* Write 1 to Clear */
|
|
case REG_MICFIL_VAD0_SCONFIG:
|
|
case REG_MICFIL_VAD0_NCONFIG:
|
|
case REG_MICFIL_VAD0_ZCD:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool fsl_micfil_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case REG_MICFIL_STAT:
|
|
case REG_MICFIL_DATACH0:
|
|
case REG_MICFIL_DATACH1:
|
|
case REG_MICFIL_DATACH2:
|
|
case REG_MICFIL_DATACH3:
|
|
case REG_MICFIL_DATACH4:
|
|
case REG_MICFIL_DATACH5:
|
|
case REG_MICFIL_DATACH6:
|
|
case REG_MICFIL_DATACH7:
|
|
case REG_MICFIL_VAD0_STAT:
|
|
case REG_MICFIL_VAD0_NDATA:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const struct regmap_config fsl_micfil_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
|
|
.max_register = REG_MICFIL_VAD0_ZCD,
|
|
.reg_defaults = fsl_micfil_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(fsl_micfil_reg_defaults),
|
|
.readable_reg = fsl_micfil_readable_reg,
|
|
.volatile_reg = fsl_micfil_volatile_reg,
|
|
.writeable_reg = fsl_micfil_writeable_reg,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
/* END OF REGMAP */
|
|
|
|
static irqreturn_t micfil_isr(int irq, void *devid)
|
|
{
|
|
struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
|
|
struct platform_device *pdev = micfil->pdev;
|
|
u32 stat_reg;
|
|
u32 fifo_stat_reg;
|
|
u32 ctrl1_reg;
|
|
bool dma_enabled;
|
|
int i;
|
|
|
|
regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
|
|
regmap_read(micfil->regmap, REG_MICFIL_CTRL1, &ctrl1_reg);
|
|
regmap_read(micfil->regmap, REG_MICFIL_FIFO_STAT, &fifo_stat_reg);
|
|
|
|
dma_enabled = MICFIL_DMA_ENABLED(ctrl1_reg);
|
|
|
|
/* Channel 0-7 Output Data Flags */
|
|
for (i = 0; i < MICFIL_OUTPUT_CHANNELS; i++) {
|
|
if (stat_reg & MICFIL_STAT_CHXF_MASK(i))
|
|
dev_dbg(&pdev->dev,
|
|
"Data available in Data Channel %d\n", i);
|
|
/* if DMA is not enabled, field must be written with 1
|
|
* to clear
|
|
*/
|
|
if (!dma_enabled)
|
|
regmap_write_bits(micfil->regmap,
|
|
REG_MICFIL_STAT,
|
|
MICFIL_STAT_CHXF_MASK(i),
|
|
1);
|
|
}
|
|
|
|
for (i = 0; i < MICFIL_FIFO_NUM; i++) {
|
|
if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_OVER_MASK(i))
|
|
dev_dbg(&pdev->dev,
|
|
"FIFO Overflow Exception flag for channel %d\n",
|
|
i);
|
|
|
|
if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_UNDER_MASK(i))
|
|
dev_dbg(&pdev->dev,
|
|
"FIFO Underflow Exception flag for channel %d\n",
|
|
i);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t micfil_err_isr(int irq, void *devid)
|
|
{
|
|
struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
|
|
struct platform_device *pdev = micfil->pdev;
|
|
u32 stat_reg;
|
|
|
|
regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
|
|
|
|
if (stat_reg & MICFIL_STAT_BSY_FIL_MASK)
|
|
dev_dbg(&pdev->dev, "isr: Decimation Filter is running\n");
|
|
|
|
if (stat_reg & MICFIL_STAT_FIR_RDY_MASK)
|
|
dev_dbg(&pdev->dev, "isr: FIR Filter Data ready\n");
|
|
|
|
if (stat_reg & MICFIL_STAT_LOWFREQF_MASK) {
|
|
dev_dbg(&pdev->dev, "isr: ipg_clk_app is too low\n");
|
|
regmap_write_bits(micfil->regmap, REG_MICFIL_STAT,
|
|
MICFIL_STAT_LOWFREQF_MASK, 1);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int fsl_micfil_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
const struct of_device_id *of_id;
|
|
struct fsl_micfil *micfil;
|
|
struct resource *res;
|
|
void __iomem *regs;
|
|
int ret, i;
|
|
unsigned long irqflag = 0;
|
|
|
|
micfil = devm_kzalloc(&pdev->dev, sizeof(*micfil), GFP_KERNEL);
|
|
if (!micfil)
|
|
return -ENOMEM;
|
|
|
|
micfil->pdev = pdev;
|
|
strncpy(micfil->name, np->name, sizeof(micfil->name) - 1);
|
|
|
|
of_id = of_match_device(fsl_micfil_dt_ids, &pdev->dev);
|
|
if (!of_id || !of_id->data)
|
|
return -EINVAL;
|
|
|
|
micfil->soc = of_id->data;
|
|
|
|
/* ipg_clk is used to control the registers
|
|
* ipg_clk_app is used to operate the filter
|
|
*/
|
|
micfil->mclk = devm_clk_get(&pdev->dev, "ipg_clk_app");
|
|
if (IS_ERR(micfil->mclk)) {
|
|
dev_err(&pdev->dev, "failed to get core clock: %ld\n",
|
|
PTR_ERR(micfil->mclk));
|
|
return PTR_ERR(micfil->mclk);
|
|
}
|
|
|
|
/* init regmap */
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(regs))
|
|
return PTR_ERR(regs);
|
|
|
|
micfil->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
|
|
"ipg_clk",
|
|
regs,
|
|
&fsl_micfil_regmap_config);
|
|
if (IS_ERR(micfil->regmap)) {
|
|
dev_err(&pdev->dev, "failed to init MICFIL regmap: %ld\n",
|
|
PTR_ERR(micfil->regmap));
|
|
return PTR_ERR(micfil->regmap);
|
|
}
|
|
|
|
/* dataline mask for RX */
|
|
ret = of_property_read_u32_index(np,
|
|
"fsl,dataline",
|
|
0,
|
|
&micfil->dataline);
|
|
if (ret)
|
|
micfil->dataline = 1;
|
|
|
|
if (micfil->dataline & ~micfil->soc->dataline) {
|
|
dev_err(&pdev->dev, "dataline setting error, Mask is 0x%X\n",
|
|
micfil->soc->dataline);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* get IRQs */
|
|
for (i = 0; i < MICFIL_IRQ_LINES; i++) {
|
|
micfil->irq[i] = platform_get_irq(pdev, i);
|
|
dev_err(&pdev->dev, "GET IRQ: %d\n", micfil->irq[i]);
|
|
if (micfil->irq[i] < 0) {
|
|
dev_err(&pdev->dev, "no irq for node %s\n", pdev->name);
|
|
return micfil->irq[i];
|
|
}
|
|
}
|
|
|
|
if (of_property_read_bool(np, "fsl,shared-interrupt"))
|
|
irqflag = IRQF_SHARED;
|
|
|
|
/* Digital Microphone interface interrupt - IRQ 109 */
|
|
ret = devm_request_irq(&pdev->dev, micfil->irq[0],
|
|
micfil_isr, irqflag,
|
|
micfil->name, micfil);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to claim mic interface irq %u\n",
|
|
micfil->irq[0]);
|
|
return ret;
|
|
}
|
|
|
|
/* Digital Microphone interface error interrupt - IRQ 110 */
|
|
ret = devm_request_irq(&pdev->dev, micfil->irq[1],
|
|
micfil_err_isr, irqflag,
|
|
micfil->name, micfil);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to claim mic interface error irq %u\n",
|
|
micfil->irq[1]);
|
|
return ret;
|
|
}
|
|
|
|
micfil->dma_params_rx.chan_name = "rx";
|
|
micfil->dma_params_rx.addr = res->start + REG_MICFIL_DATACH0;
|
|
micfil->dma_params_rx.maxburst = MICFIL_DMA_MAXBURST_RX;
|
|
|
|
|
|
platform_set_drvdata(pdev, micfil);
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_micfil_component,
|
|
&fsl_micfil_dai, 1);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register component %s\n",
|
|
fsl_micfil_component.name);
|
|
return ret;
|
|
}
|
|
|
|
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "failed to pcm register\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
|
|
{
|
|
struct fsl_micfil *micfil = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(micfil->regmap, true);
|
|
|
|
clk_disable_unprepare(micfil->mclk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused fsl_micfil_runtime_resume(struct device *dev)
|
|
{
|
|
struct fsl_micfil *micfil = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(micfil->mclk);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
regcache_cache_only(micfil->regmap, false);
|
|
regcache_mark_dirty(micfil->regmap);
|
|
regcache_sync(micfil->regmap);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM*/
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int __maybe_unused fsl_micfil_suspend(struct device *dev)
|
|
{
|
|
pm_runtime_force_suspend(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused fsl_micfil_resume(struct device *dev)
|
|
{
|
|
pm_runtime_force_resume(dev);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static const struct dev_pm_ops fsl_micfil_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(fsl_micfil_runtime_suspend,
|
|
fsl_micfil_runtime_resume,
|
|
NULL)
|
|
SET_SYSTEM_SLEEP_PM_OPS(fsl_micfil_suspend,
|
|
fsl_micfil_resume)
|
|
};
|
|
|
|
static struct platform_driver fsl_micfil_driver = {
|
|
.probe = fsl_micfil_probe,
|
|
.driver = {
|
|
.name = "fsl-micfil-dai",
|
|
.pm = &fsl_micfil_pm_ops,
|
|
.of_match_table = fsl_micfil_dt_ids,
|
|
},
|
|
};
|
|
module_platform_driver(fsl_micfil_driver);
|
|
|
|
MODULE_AUTHOR("Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>");
|
|
MODULE_DESCRIPTION("NXP PDM Microphone Interface (MICFIL) driver");
|
|
MODULE_LICENSE("GPL v2");
|