diff options
Diffstat (limited to 'sound/soc/fsl/fsl_micfil.c')
-rw-r--r-- | sound/soc/fsl/fsl_micfil.c | 382 |
1 files changed, 144 insertions, 238 deletions
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c index 9f90989ac59a..7b88d52f27de 100644 --- a/sound/soc/fsl/fsl_micfil.c +++ b/sound/soc/fsl/fsl_micfil.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright 2018 NXP +#include <linux/bitfield.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/interrupt.h> @@ -15,6 +16,7 @@ #include <linux/regmap.h> #include <linux/sysfs.h> #include <linux/types.h> +#include <linux/dma/imx-dma.h> #include <sound/dmaengine_pcm.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -22,10 +24,17 @@ #include <sound/core.h> #include "fsl_micfil.h" -#include "imx-pcm.h" -#define FSL_MICFIL_RATES SNDRV_PCM_RATE_8000_48000 -#define FSL_MICFIL_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) +#define MICFIL_OSR_DEFAULT 16 + +enum quality { + QUALITY_HIGH, + QUALITY_MEDIUM, + QUALITY_LOW, + QUALITY_VLOW0, + QUALITY_VLOW1, + QUALITY_VLOW2, +}; struct fsl_micfil { struct platform_device *pdev; @@ -34,13 +43,11 @@ struct fsl_micfil { struct clk *busclk; struct clk *mclk; struct snd_dmaengine_dai_dma_data dma_params_rx; + struct sdma_peripheral_config sdmacfg; unsigned int dataline; char name[32]; int irq[MICFIL_IRQ_LINES]; - unsigned int mclk_streams; - int quality; /*QUALITY 2-0 bits */ - bool slave_mode; - int channel_gain[8]; + enum quality quality; }; struct fsl_micfil_soc_data { @@ -48,6 +55,7 @@ struct fsl_micfil_soc_data { unsigned int fifo_depth; unsigned int dataline; bool imx; + u64 formats; }; static struct fsl_micfil_soc_data fsl_micfil_imx8mm = { @@ -55,37 +63,91 @@ static struct fsl_micfil_soc_data fsl_micfil_imx8mm = { .fifos = 8, .fifo_depth = 8, .dataline = 0xf, + .formats = SNDRV_PCM_FMTBIT_S16_LE, +}; + +static struct fsl_micfil_soc_data fsl_micfil_imx8mp = { + .imx = true, + .fifos = 8, + .fifo_depth = 32, + .dataline = 0xf, + .formats = SNDRV_PCM_FMTBIT_S32_LE, }; static const struct of_device_id fsl_micfil_dt_ids[] = { { .compatible = "fsl,imx8mm-micfil", .data = &fsl_micfil_imx8mm }, + { .compatible = "fsl,imx8mp-micfil", .data = &fsl_micfil_imx8mp }, {} }; MODULE_DEVICE_TABLE(of, fsl_micfil_dt_ids); -/* Table 5. Quality Modes - * Medium 0 0 0 - * High 0 0 1 - * Very Low 2 1 0 0 - * Very Low 1 1 0 1 - * Very Low 0 1 1 0 - * Low 1 1 1 - */ static const char * const micfil_quality_select_texts[] = { - "Medium", "High", - "N/A", "N/A", - "VLow2", "VLow1", - "VLow0", "Low", + [QUALITY_HIGH] = "High", + [QUALITY_MEDIUM] = "Medium", + [QUALITY_LOW] = "Low", + [QUALITY_VLOW0] = "VLow0", + [QUALITY_VLOW1] = "Vlow1", + [QUALITY_VLOW2] = "Vlow2", }; static const struct soc_enum fsl_micfil_quality_enum = - SOC_ENUM_SINGLE(REG_MICFIL_CTRL2, - MICFIL_CTRL2_QSEL_SHIFT, - ARRAY_SIZE(micfil_quality_select_texts), - micfil_quality_select_texts); + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_quality_select_texts), + micfil_quality_select_texts); static DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0); +static int micfil_set_quality(struct fsl_micfil *micfil) +{ + u32 qsel; + + switch (micfil->quality) { + case QUALITY_HIGH: + qsel = MICFIL_QSEL_HIGH_QUALITY; + break; + case QUALITY_MEDIUM: + qsel = MICFIL_QSEL_MEDIUM_QUALITY; + break; + case QUALITY_LOW: + qsel = MICFIL_QSEL_LOW_QUALITY; + break; + case QUALITY_VLOW0: + qsel = MICFIL_QSEL_VLOW0_QUALITY; + break; + case QUALITY_VLOW1: + qsel = MICFIL_QSEL_VLOW1_QUALITY; + break; + case QUALITY_VLOW2: + qsel = MICFIL_QSEL_VLOW2_QUALITY; + break; + } + + return regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2, + MICFIL_CTRL2_QSEL, + FIELD_PREP(MICFIL_CTRL2_QSEL, qsel)); +} + +static int micfil_quality_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol); + struct fsl_micfil *micfil = snd_soc_component_get_drvdata(cmpnt); + + ucontrol->value.integer.value[0] = micfil->quality; + + return 0; +} + +static int micfil_quality_set(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol); + struct fsl_micfil *micfil = snd_soc_component_get_drvdata(cmpnt); + + micfil->quality = ucontrol->value.integer.value[0]; + + return micfil_set_quality(micfil); +} + static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = { SOC_SINGLE_SX_TLV("CH0 Volume", REG_MICFIL_OUT_CTRL, MICFIL_OUTGAIN_CHX_SHIFT(0), 0xF, 0x7, gain_tlv), @@ -105,64 +167,9 @@ static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = { MICFIL_OUTGAIN_CHX_SHIFT(7), 0xF, 0x7, gain_tlv), SOC_ENUM_EXT("MICFIL Quality Select", fsl_micfil_quality_enum, - snd_soc_get_enum_double, snd_soc_put_enum_double), + micfil_quality_get, micfil_quality_set), }; -static inline int get_pdm_clk(struct fsl_micfil *micfil, - unsigned int rate) -{ - u32 ctrl2_reg; - int qsel, osr; - int bclk; - - regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg); - osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK) - >> MICFIL_CTRL2_CICOSR_SHIFT); - - regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg); - qsel = ctrl2_reg & MICFIL_CTRL2_QSEL_MASK; - - switch (qsel) { - case MICFIL_HIGH_QUALITY: - bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */ - break; - case MICFIL_MEDIUM_QUALITY: - case MICFIL_VLOW0_QUALITY: - bclk = rate * 4 * osr * 1; /* kfactor = 1 */ - break; - case MICFIL_LOW_QUALITY: - case MICFIL_VLOW1_QUALITY: - bclk = rate * 2 * osr * 2; /* kfactor = 2 */ - break; - case MICFIL_VLOW2_QUALITY: - bclk = rate * osr * 4; /* kfactor = 4 */ - break; - default: - dev_err(&micfil->pdev->dev, - "Please make sure you select a valid quality.\n"); - bclk = -1; - break; - } - - return bclk; -} - -static inline int get_clk_div(struct fsl_micfil *micfil, - unsigned int rate) -{ - u32 ctrl2_reg; - long mclk_rate; - int clk_div; - - regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg); - - mclk_rate = clk_get_rate(micfil->mclk); - - clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2); - - return clk_div; -} - /* The SRES is a self-negated bit which provides the CPU with the * capability to initialize the PDM Interface module through the * slave-bus interface. This bit always reads as zero, and this @@ -173,45 +180,19 @@ static int fsl_micfil_reset(struct device *dev) struct fsl_micfil *micfil = dev_get_drvdata(dev); int ret; - ret = regmap_update_bits(micfil->regmap, - REG_MICFIL_CTRL1, - MICFIL_CTRL1_MDIS_MASK, - 0); - if (ret) { - dev_err(dev, "failed to clear MDIS bit %d\n", ret); + ret = regmap_clear_bits(micfil->regmap, REG_MICFIL_CTRL1, + MICFIL_CTRL1_MDIS); + if (ret) return ret; - } - ret = regmap_update_bits(micfil->regmap, - REG_MICFIL_CTRL1, - MICFIL_CTRL1_SRES_MASK, - MICFIL_CTRL1_SRES); - if (ret) { - dev_err(dev, "failed to reset MICFIL: %d\n", ret); + ret = regmap_set_bits(micfil->regmap, REG_MICFIL_CTRL1, + MICFIL_CTRL1_SRES); + if (ret) return ret; - } return 0; } -static int fsl_micfil_set_mclk_rate(struct fsl_micfil *micfil, - unsigned int freq) -{ - struct device *dev = &micfil->pdev->dev; - int ret; - - clk_disable_unprepare(micfil->mclk); - - ret = clk_set_rate(micfil->mclk, freq * 1024); - if (ret) - dev_warn(dev, "failed to set rate (%u): %d\n", - freq * 1024, ret); - - clk_prepare_enable(micfil->mclk); - - return ret; -} - static int fsl_micfil_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -249,42 +230,32 @@ static int fsl_micfil_trigger(struct snd_pcm_substream *substream, int cmd, * 11 - reserved */ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, - MICFIL_CTRL1_DISEL_MASK, - (1 << MICFIL_CTRL1_DISEL_SHIFT)); - if (ret) { - dev_err(dev, "failed to update DISEL bits\n"); + MICFIL_CTRL1_DISEL, + FIELD_PREP(MICFIL_CTRL1_DISEL, MICFIL_CTRL1_DISEL_DMA)); + if (ret) return ret; - } /* Enable the module */ - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, - MICFIL_CTRL1_PDMIEN_MASK, - MICFIL_CTRL1_PDMIEN); - if (ret) { - dev_err(dev, "failed to enable the module\n"); + ret = regmap_set_bits(micfil->regmap, REG_MICFIL_CTRL1, + MICFIL_CTRL1_PDMIEN); + if (ret) return ret; - } break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* Disable the module */ - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, - MICFIL_CTRL1_PDMIEN_MASK, - 0); - if (ret) { - dev_err(dev, "failed to enable the module\n"); + ret = regmap_clear_bits(micfil->regmap, REG_MICFIL_CTRL1, + MICFIL_CTRL1_PDMIEN); + if (ret) return ret; - } ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, - MICFIL_CTRL1_DISEL_MASK, - (0 << MICFIL_CTRL1_DISEL_SHIFT)); - if (ret) { - dev_err(dev, "failed to update DISEL bits\n"); + MICFIL_CTRL1_DISEL, + FIELD_PREP(MICFIL_CTRL1_DISEL, MICFIL_CTRL1_DISEL_DISABLE)); + if (ret) return ret; - } break; default: return -EINVAL; @@ -292,39 +263,6 @@ static int fsl_micfil_trigger(struct snd_pcm_substream *substream, int cmd, return 0; } -static int fsl_set_clock_params(struct device *dev, unsigned int rate) -{ - struct fsl_micfil *micfil = dev_get_drvdata(dev); - int clk_div; - int ret; - - ret = fsl_micfil_set_mclk_rate(micfil, rate); - if (ret < 0) - dev_err(dev, "failed to set mclk[%lu] to rate %u\n", - clk_get_rate(micfil->mclk), rate); - - /* set CICOSR */ - ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2, - MICFIL_CTRL2_CICOSR_MASK, - MICFIL_CTRL2_OSR_DEFAULT); - if (ret) - dev_err(dev, "failed to set CICOSR in reg 0x%X\n", - REG_MICFIL_CTRL2); - - /* set CLK_DIV */ - clk_div = get_clk_div(micfil, rate); - if (clk_div < 0) - ret = -EINVAL; - - ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2, - MICFIL_CTRL2_CLKDIV_MASK, clk_div); - if (ret) - dev_err(dev, "failed to set CLKDIV in reg 0x%X\n", - REG_MICFIL_CTRL2); - - return ret; -} - static int fsl_micfil_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) @@ -332,97 +270,69 @@ static int fsl_micfil_hw_params(struct snd_pcm_substream *substream, struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai); unsigned int channels = params_channels(params); unsigned int rate = params_rate(params); - struct device *dev = &micfil->pdev->dev; + int clk_div = 8; + int osr = MICFIL_OSR_DEFAULT; int ret; /* 1. Disable the module */ - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, - MICFIL_CTRL1_PDMIEN_MASK, 0); - if (ret) { - dev_err(dev, "failed to disable the module\n"); + ret = regmap_clear_bits(micfil->regmap, REG_MICFIL_CTRL1, + MICFIL_CTRL1_PDMIEN); + if (ret) return ret; - } /* enable channels */ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1, 0xFF, ((1 << channels) - 1)); - if (ret) { - dev_err(dev, "failed to enable channels %d, reg 0x%X\n", ret, - REG_MICFIL_CTRL1); + if (ret) return ret; - } - ret = fsl_set_clock_params(dev, rate); - if (ret < 0) { - dev_err(dev, "Failed to set clock parameters [%d]\n", ret); + ret = clk_set_rate(micfil->mclk, rate * clk_div * osr * 8); + if (ret) + return ret; + + ret = micfil_set_quality(micfil); + if (ret) return ret; - } + ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2, + MICFIL_CTRL2_CLKDIV | MICFIL_CTRL2_CICOSR, + FIELD_PREP(MICFIL_CTRL2_CLKDIV, clk_div) | + FIELD_PREP(MICFIL_CTRL2_CICOSR, 16 - osr)); + + micfil->dma_params_rx.peripheral_config = &micfil->sdmacfg; + micfil->dma_params_rx.peripheral_size = sizeof(micfil->sdmacfg); + micfil->sdmacfg.n_fifos_src = channels; + micfil->sdmacfg.sw_done = true; micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX; return 0; } -static int fsl_micfil_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, - unsigned int freq, int dir) -{ - struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai); - struct device *dev = &micfil->pdev->dev; - - int ret; - - if (!freq) - return 0; - - ret = fsl_micfil_set_mclk_rate(micfil, freq); - if (ret < 0) - dev_err(dev, "failed to set mclk[%lu] to rate %u\n", - clk_get_rate(micfil->mclk), freq); - - return ret; -} - static const struct snd_soc_dai_ops fsl_micfil_dai_ops = { .startup = fsl_micfil_startup, .trigger = fsl_micfil_trigger, .hw_params = fsl_micfil_hw_params, - .set_sysclk = fsl_micfil_set_dai_sysclk, }; static int fsl_micfil_dai_probe(struct snd_soc_dai *cpu_dai) { struct fsl_micfil *micfil = dev_get_drvdata(cpu_dai->dev); - struct device *dev = cpu_dai->dev; - unsigned int val; int ret; - int i; - /* set qsel to medium */ - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2, - MICFIL_CTRL2_QSEL_MASK, MICFIL_MEDIUM_QUALITY); - if (ret) { - dev_err(dev, "failed to set quality mode bits, reg 0x%X\n", - REG_MICFIL_CTRL2); - return ret; - } + micfil->quality = QUALITY_MEDIUM; /* set default gain to max_gain */ regmap_write(micfil->regmap, REG_MICFIL_OUT_CTRL, 0x77777777); - for (i = 0; i < 8; i++) - micfil->channel_gain[i] = 0xF; snd_soc_dai_init_dma_data(cpu_dai, NULL, &micfil->dma_params_rx); /* FIFO Watermark Control - FIFOWMK*/ - val = MICFIL_FIFO_CTRL_FIFOWMK(micfil->soc->fifo_depth) - 1; ret = regmap_update_bits(micfil->regmap, REG_MICFIL_FIFO_CTRL, - MICFIL_FIFO_CTRL_FIFOWMK_MASK, - val); - if (ret) { - dev_err(dev, "failed to set FIFOWMK\n"); + MICFIL_FIFO_CTRL_FIFOWMK, + FIELD_PREP(MICFIL_FIFO_CTRL_FIFOWMK, micfil->soc->fifo_depth - 1)); + if (ret) return ret; - } return 0; } @@ -433,8 +343,8 @@ static struct snd_soc_dai_driver fsl_micfil_dai = { .stream_name = "CPU-Capture", .channels_min = 1, .channels_max = 8, - .rates = FSL_MICFIL_RATES, - .formats = FSL_MICFIL_FORMATS, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &fsl_micfil_dai_ops, }; @@ -578,11 +488,11 @@ static irqreturn_t micfil_isr(int irq, void *devid) 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); + dma_enabled = FIELD_GET(MICFIL_CTRL1_DISEL, ctrl1_reg) == MICFIL_CTRL1_DISEL_DMA; /* Channel 0-7 Output Data Flags */ for (i = 0; i < MICFIL_OUTPUT_CHANNELS; i++) { - if (stat_reg & MICFIL_STAT_CHXF_MASK(i)) + if (stat_reg & MICFIL_STAT_CHXF(i)) dev_dbg(&pdev->dev, "Data available in Data Channel %d\n", i); /* if DMA is not enabled, field must be written with 1 @@ -591,17 +501,17 @@ static irqreturn_t micfil_isr(int irq, void *devid) if (!dma_enabled) regmap_write_bits(micfil->regmap, REG_MICFIL_STAT, - MICFIL_STAT_CHXF_MASK(i), + MICFIL_STAT_CHXF(i), 1); } for (i = 0; i < MICFIL_FIFO_NUM; i++) { - if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_OVER_MASK(i)) + if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_OVER(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)) + if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_UNDER(i)) dev_dbg(&pdev->dev, "FIFO Underflow Exception flag for channel %d\n", i); @@ -618,16 +528,16 @@ static irqreturn_t micfil_err_isr(int irq, void *devid) regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg); - if (stat_reg & MICFIL_STAT_BSY_FIL_MASK) + if (stat_reg & MICFIL_STAT_BSY_FIL) dev_dbg(&pdev->dev, "isr: Decimation Filter is running\n"); - if (stat_reg & MICFIL_STAT_FIR_RDY_MASK) + if (stat_reg & MICFIL_STAT_FIR_RDY) dev_dbg(&pdev->dev, "isr: FIR Filter Data ready\n"); - if (stat_reg & MICFIL_STAT_LOWFREQF_MASK) { + if (stat_reg & MICFIL_STAT_LOWFREQF) { 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); + MICFIL_STAT_LOWFREQF, 1); } return IRQ_HANDLED; @@ -640,7 +550,6 @@ static int fsl_micfil_probe(struct platform_device *pdev) struct resource *res; void __iomem *regs; int ret, i; - unsigned long irqflag = 0; micfil = devm_kzalloc(&pdev->dev, sizeof(*micfil), GFP_KERNEL); if (!micfil) @@ -699,17 +608,13 @@ static int fsl_micfil_probe(struct platform_device *pdev) /* 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) return micfil->irq[i]; } - if (of_property_read_bool(np, "fsl,shared-interrupt")) - irqflag = IRQF_SHARED; - /* Digital Microphone interface interrupt */ ret = devm_request_irq(&pdev->dev, micfil->irq[0], - micfil_isr, irqflag, + micfil_isr, IRQF_SHARED, micfil->name, micfil); if (ret) { dev_err(&pdev->dev, "failed to claim mic interface irq %u\n", @@ -719,7 +624,7 @@ static int fsl_micfil_probe(struct platform_device *pdev) /* Digital Microphone interface error interrupt */ ret = devm_request_irq(&pdev->dev, micfil->irq[1], - micfil_err_isr, irqflag, + micfil_err_isr, IRQF_SHARED, micfil->name, micfil); if (ret) { dev_err(&pdev->dev, "failed to claim mic interface error irq %u\n", @@ -731,7 +636,6 @@ static int fsl_micfil_probe(struct platform_device *pdev) 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); @@ -747,6 +651,8 @@ static int fsl_micfil_probe(struct platform_device *pdev) return ret; } + fsl_micfil_dai.capture.formats = micfil->soc->formats; + ret = devm_snd_soc_register_component(&pdev->dev, &fsl_micfil_component, &fsl_micfil_dai, 1); if (ret) { |