Shorten the private data structure to save some wrapped lines.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 456 +++++++++++++++++++++++------------------------- 1 file changed, 220 insertions(+), 236 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index c350117..84d2f7e 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -185,7 +185,7 @@ struct fsl_ssi_soc_data { };

/** - * fsl_ssi_private: per-SSI private data + * fsl_ssi: per-SSI private data * * @reg: Pointer to the regmap registers * @irq: IRQ of this SSI @@ -224,7 +224,7 @@ struct fsl_ssi_soc_data { * @dma_maxburst: max number of words to transfer in one go. So far, * this is always the same as fifo_watermark. */ -struct fsl_ssi_private { +struct fsl_ssi { struct regmap *regs; int irq; struct snd_soc_dai_driver cpu_dai_drv; @@ -325,21 +325,21 @@ static const struct of_device_id fsl_ssi_ids[] = { }; MODULE_DEVICE_TABLE(of, fsl_ssi_ids);

-static bool fsl_ssi_is_ac97(struct fsl_ssi_private *ssi_private) +static bool fsl_ssi_is_ac97(struct fsl_ssi *ssi) { - return (ssi_private->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) == + return (ssi->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_AC97; }

-static bool fsl_ssi_is_i2s_master(struct fsl_ssi_private *ssi_private) +static bool fsl_ssi_is_i2s_master(struct fsl_ssi *ssi) { - return (ssi_private->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == + return (ssi->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBS_CFS; }

-static bool fsl_ssi_is_i2s_cbm_cfs(struct fsl_ssi_private *ssi_private) +static bool fsl_ssi_is_i2s_cbm_cfs(struct fsl_ssi *ssi) { - return (ssi_private->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == + return (ssi->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFS; } /** @@ -352,12 +352,12 @@ static bool fsl_ssi_is_i2s_cbm_cfs(struct fsl_ssi_private *ssi_private) * This interrupt handler is used only to gather statistics. * * @irq: IRQ of the SSI device - * @dev_id: pointer to the ssi_private structure for this SSI device + * @dev_id: pointer to the fsl_ssi structure for this SSI device */ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) { - struct fsl_ssi_private *ssi_private = dev_id; - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = dev_id; + struct regmap *regs = ssi->regs; __be32 sisr; __be32 sisr2;

@@ -367,12 +367,12 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) */ regmap_read(regs, CCSR_SSI_SISR, &sisr);

- sisr2 = sisr & ssi_private->soc->sisr_write_mask; + sisr2 = sisr & ssi->soc->sisr_write_mask; /* Clear the bits that we set */ if (sisr2) regmap_write(regs, CCSR_SSI_SISR, sisr2);

- fsl_ssi_dbg_isr(&ssi_private->dbg_stats, sisr); + fsl_ssi_dbg_isr(&ssi->dbg_stats, sisr);

return IRQ_HANDLED; } @@ -380,11 +380,10 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) /* * Enable/Disable all rx/tx config flags at once. */ -static void fsl_ssi_rxtx_config(struct fsl_ssi_private *ssi_private, - bool enable) +static void fsl_ssi_rxtx_config(struct fsl_ssi *ssi, bool enable) { - struct regmap *regs = ssi_private->regs; - struct fsl_ssi_rxtx_reg_val *vals = &ssi_private->rxtx_reg_val; + struct regmap *regs = ssi->regs; + struct fsl_ssi_rxtx_reg_val *vals = &ssi->rxtx_reg_val;

if (enable) { regmap_update_bits(regs, CCSR_SSI_SIER, @@ -414,14 +413,13 @@ static void fsl_ssi_rxtx_config(struct fsl_ssi_private *ssi_private, * Note: The SOR is not documented in recent IMX datasheet, but * is described in IMX51 reference manual at section 56.3.3.15. */ -static void fsl_ssi_fifo_clear(struct fsl_ssi_private *ssi_private, - bool is_rx) +static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) { if (is_rx) { - regmap_update_bits(ssi_private->regs, CCSR_SSI_SOR, + regmap_update_bits(ssi->regs, CCSR_SSI_SOR, CCSR_SSI_SOR_RX_CLR, CCSR_SSI_SOR_RX_CLR); } else { - regmap_update_bits(ssi_private->regs, CCSR_SSI_SOR, + regmap_update_bits(ssi->regs, CCSR_SSI_SOR, CCSR_SSI_SOR_TX_CLR, CCSR_SSI_SOR_TX_CLR); } } @@ -448,12 +446,12 @@ static void fsl_ssi_fifo_clear(struct fsl_ssi_private *ssi_private,

/* * Enable/Disable a ssi configuration. You have to pass either - * ssi_private->rxtx_reg_val.rx or tx as vals parameter. + * ssi->rxtx_reg_val.rx or tx as vals parameter. */ -static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, +static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, struct fsl_ssi_reg_val *vals) { - struct regmap *regs = ssi_private->regs; + struct regmap *regs = ssi->regs; struct fsl_ssi_reg_val *avals; int nr_active_streams; u32 scr_val; @@ -471,10 +469,10 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable,

/* Find the other direction values rx or tx which we do not want to * modify */ - if (&ssi_private->rxtx_reg_val.rx == vals) - avals = &ssi_private->rxtx_reg_val.tx; + if (&ssi->rxtx_reg_val.rx == vals) + avals = &ssi->rxtx_reg_val.tx; else - avals = &ssi_private->rxtx_reg_val.rx; + avals = &ssi->rxtx_reg_val.rx;

/* If vals should be disabled, start with disabling the unit */ if (!enable) { @@ -488,10 +486,10 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, * reconfiguration, so we have to enable all necessary flags at once * even if we do not use them later (capture and playback configuration) */ - if (ssi_private->soc->offline_config) { + if (ssi->soc->offline_config) { if ((enable && !nr_active_streams) || (!enable && !keep_active)) - fsl_ssi_rxtx_config(ssi_private, enable); + fsl_ssi_rxtx_config(ssi, enable);

goto config_done; } @@ -501,7 +499,7 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, * (online configuration) */ if (enable) { - fsl_ssi_fifo_clear(ssi_private, vals->scr & CCSR_SSI_SCR_RE); + fsl_ssi_fifo_clear(ssi, vals->scr & CCSR_SSI_SCR_RE);

regmap_update_bits(regs, CCSR_SSI_SRCR, vals->srcr, vals->srcr); regmap_update_bits(regs, CCSR_SSI_STCR, vals->stcr, vals->stcr); @@ -536,7 +534,7 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, config_done: /* Enabling of subunits is done after configuration */ if (enable) { - if (ssi_private->use_dma && (vals->scr & CCSR_SSI_SCR_TE)) { + if (ssi->use_dma && (vals->scr & CCSR_SSI_SCR_TE)) { /* * Be sure the Tx FIFO is filled when TE is set. * Otherwise, there are some chances to start the @@ -563,7 +561,7 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, break; } if (i == max_loop) { - dev_err(ssi_private->dev, + dev_err(ssi->dev, "Timeout waiting TX FIFO filling\n"); } } @@ -572,17 +570,17 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable, }

-static void fsl_ssi_rx_config(struct fsl_ssi_private *ssi_private, bool enable) +static void fsl_ssi_rx_config(struct fsl_ssi *ssi, bool enable) { - fsl_ssi_config(ssi_private, enable, &ssi_private->rxtx_reg_val.rx); + fsl_ssi_config(ssi, enable, &ssi->rxtx_reg_val.rx); }

-static void fsl_ssi_tx_ac97_saccst_setup(struct fsl_ssi_private *ssi_private) +static void fsl_ssi_tx_ac97_saccst_setup(struct fsl_ssi *ssi) { - struct regmap *regs = ssi_private->regs; + struct regmap *regs = ssi->regs;

/* no SACC{ST,EN,DIS} regs on imx21-class SSI */ - if (!ssi_private->soc->imx21regs) { + if (!ssi->soc->imx21regs) { /* * Note that these below aren't just normal registers. * They are a way to disable or enable bits in SACCST @@ -601,7 +599,7 @@ static void fsl_ssi_tx_ac97_saccst_setup(struct fsl_ssi_private *ssi_private) } }

-static void fsl_ssi_tx_config(struct fsl_ssi_private *ssi_private, bool enable) +static void fsl_ssi_tx_config(struct fsl_ssi *ssi, bool enable) { /* * Why are we setting up SACCST everytime we are starting a @@ -622,10 +620,10 @@ static void fsl_ssi_tx_config(struct fsl_ssi_private *ssi_private, bool enable) * untrustworthy let's play safe here and make sure that no extra * slots are enabled every time a playback is started. */ - if (enable && fsl_ssi_is_ac97(ssi_private)) - fsl_ssi_tx_ac97_saccst_setup(ssi_private); + if (enable && fsl_ssi_is_ac97(ssi)) + fsl_ssi_tx_ac97_saccst_setup(ssi);

- fsl_ssi_config(ssi_private, enable, &ssi_private->rxtx_reg_val.tx); + fsl_ssi_config(ssi, enable, &ssi->rxtx_reg_val.tx); }

/* @@ -633,9 +631,9 @@ static void fsl_ssi_tx_config(struct fsl_ssi_private *ssi_private, bool enable) * be used later in fsl_ssi_config to setup the streams without the need to * check for all different SSI modes. */ -static void fsl_ssi_setup_reg_vals(struct fsl_ssi_private *ssi_private) +static void fsl_ssi_setup_reg_vals(struct fsl_ssi *ssi) { - struct fsl_ssi_rxtx_reg_val *reg = &ssi_private->rxtx_reg_val; + struct fsl_ssi_rxtx_reg_val *reg = &ssi->rxtx_reg_val;

reg->rx.sier = CCSR_SSI_SIER_RFF0_EN; reg->rx.srcr = CCSR_SSI_SRCR_RFEN0; @@ -644,12 +642,12 @@ static void fsl_ssi_setup_reg_vals(struct fsl_ssi_private *ssi_private) reg->tx.stcr = CCSR_SSI_STCR_TFEN0; reg->tx.scr = 0;

- if (!fsl_ssi_is_ac97(ssi_private)) { + if (!fsl_ssi_is_ac97(ssi)) { reg->rx.scr = CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_RE; reg->tx.scr = CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_TE; }

- if (ssi_private->use_dma) { + if (ssi->use_dma) { reg->rx.sier |= CCSR_SSI_SIER_RDMAE; reg->tx.sier |= CCSR_SSI_SIER_TDMAE; } else { @@ -661,9 +659,9 @@ static void fsl_ssi_setup_reg_vals(struct fsl_ssi_private *ssi_private) reg->tx.sier |= FSLSSI_SIER_DBG_TX_FLAGS; }

-static void fsl_ssi_setup_ac97(struct fsl_ssi_private *ssi_private) +static void fsl_ssi_setup_ac97(struct fsl_ssi *ssi) { - struct regmap *regs = ssi_private->regs; + struct regmap *regs = ssi->regs;

/* * Setup the clock control register @@ -702,11 +700,10 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = - snd_soc_dai_get_drvdata(rtd->cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai); int ret;

- ret = clk_prepare_enable(ssi_private->clk); + ret = clk_prepare_enable(ssi->clk); if (ret) return ret;

@@ -715,7 +712,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, * task from fifo0, fifo1 would be neglected at the end of each * period. But SSI would still access fifo1 with an invalid data. */ - if (ssi_private->use_dual_fifo) + if (ssi->use_dual_fifo) snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2);

@@ -730,10 +727,9 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = - snd_soc_dai_get_drvdata(rtd->cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai);

- clk_disable_unprepare(ssi_private->clk); + clk_disable_unprepare(ssi->clk);

}

@@ -750,9 +746,9 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai, struct snd_pcm_hw_params *hw_params) { - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai); - struct regmap *regs = ssi_private->regs; - int synchronous = ssi_private->cpu_dai_drv.symmetric_rates, ret; + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct regmap *regs = ssi->regs; + int synchronous = ssi->cpu_dai_drv.symmetric_rates, ret; u32 pm = 999, div2, psr, stccr, mask, afreq, factor, i; unsigned long clkrate, baudrate, tmprate; unsigned int slots = params_channels(hw_params); @@ -762,29 +758,29 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, bool baudclk_is_used;

/* Override slots and slot_width if being specifically set... */ - if (ssi_private->slots) - slots = ssi_private->slots; + if (ssi->slots) + slots = ssi->slots; /* ...but keep 32 bits if slots is 2 -- I2S Master mode */ - if (ssi_private->slot_width && slots != 2) - slot_width = ssi_private->slot_width; + if (ssi->slot_width && slots != 2) + slot_width = ssi->slot_width;

/* Generate bit clock based on the slot number and slot width */ freq = slots * slot_width * params_rate(hw_params);

/* Don't apply it to any non-baudclk circumstance */ - if (IS_ERR(ssi_private->baudclk)) + if (IS_ERR(ssi->baudclk)) return -EINVAL;

/* * Hardware limitation: The bclk rate must be * never greater than 1/5 IPG clock rate */ - if (freq * 5 > clk_get_rate(ssi_private->clk)) { + if (freq * 5 > clk_get_rate(ssi->clk)) { dev_err(cpu_dai->dev, "bitclk > ipgclk/5\n"); return -EINVAL; }

- baudclk_is_used = ssi_private->baudclk_streams & ~(BIT(substream->stream)); + baudclk_is_used = ssi->baudclk_streams & ~(BIT(substream->stream));

/* It should be already enough to divide clock by setting pm alone */ psr = 0; @@ -796,9 +792,9 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, tmprate = freq * factor * (i + 1);

if (baudclk_is_used) - clkrate = clk_get_rate(ssi_private->baudclk); + clkrate = clk_get_rate(ssi->baudclk); else - clkrate = clk_round_rate(ssi_private->baudclk, tmprate); + clkrate = clk_round_rate(ssi->baudclk, tmprate);

clkrate /= factor; afreq = clkrate / (i + 1); @@ -844,7 +840,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, regmap_update_bits(regs, CCSR_SSI_SRCCR, mask, stccr);

if (!baudclk_is_used) { - ret = clk_set_rate(ssi_private->baudclk, baudrate); + ret = clk_set_rate(ssi->baudclk, baudrate); if (ret) { dev_err(cpu_dai->dev, "failed to set baudclk rate\n"); return -EINVAL; @@ -870,8 +866,8 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *cpu_dai) { - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai); - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct regmap *regs = ssi->regs; unsigned int channels = params_channels(hw_params); unsigned int sample_size = params_width(hw_params); u32 wl = CCSR_SSI_SxCCR_WL(sample_size); @@ -886,35 +882,35 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, * If we're in synchronous mode, and the SSI is already enabled, * then STCCR is already set properly. */ - if (enabled && ssi_private->cpu_dai_drv.symmetric_rates) + if (enabled && ssi->cpu_dai_drv.symmetric_rates) return 0;

- if (fsl_ssi_is_i2s_master(ssi_private)) { + if (fsl_ssi_is_i2s_master(ssi)) { ret = fsl_ssi_set_bclk(substream, cpu_dai, hw_params); if (ret) return ret;

/* Do not enable the clock if it is already enabled */ - if (!(ssi_private->baudclk_streams & BIT(substream->stream))) { - ret = clk_prepare_enable(ssi_private->baudclk); + if (!(ssi->baudclk_streams & BIT(substream->stream))) { + ret = clk_prepare_enable(ssi->baudclk); if (ret) return ret;

- ssi_private->baudclk_streams |= BIT(substream->stream); + ssi->baudclk_streams |= BIT(substream->stream); } }

- if (!fsl_ssi_is_ac97(ssi_private)) { + if (!fsl_ssi_is_ac97(ssi)) { u8 i2smode; /* * Switch to normal net mode in order to have a frame sync * signal every 32 bits instead of 16 bits */ - if (fsl_ssi_is_i2s_cbm_cfs(ssi_private) && sample_size == 16) + if (fsl_ssi_is_i2s_cbm_cfs(ssi) && sample_size == 16) i2smode = CCSR_SSI_SCR_I2S_MODE_NORMAL | CCSR_SSI_SCR_NET; else - i2smode = ssi_private->i2s_mode; + i2smode = ssi->i2s_mode;

regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_NET | CCSR_SSI_SCR_I2S_MODE_MASK, @@ -933,7 +929,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream,

/* In synchronous mode, the SSI uses STCCR for capture */ if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK) || - ssi_private->cpu_dai_drv.symmetric_rates) + ssi->cpu_dai_drv.symmetric_rates) regmap_update_bits(regs, CCSR_SSI_STCCR, CCSR_SSI_SxCCR_WL_MASK, wl); else @@ -947,34 +943,32 @@ static int fsl_ssi_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = - snd_soc_dai_get_drvdata(rtd->cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai);

- if (fsl_ssi_is_i2s_master(ssi_private) && - ssi_private->baudclk_streams & BIT(substream->stream)) { - clk_disable_unprepare(ssi_private->baudclk); - ssi_private->baudclk_streams &= ~BIT(substream->stream); + if (fsl_ssi_is_i2s_master(ssi) && + ssi->baudclk_streams & BIT(substream->stream)) { + clk_disable_unprepare(ssi->baudclk); + ssi->baudclk_streams &= ~BIT(substream->stream); }

return 0; }

static int _fsl_ssi_set_dai_fmt(struct device *dev, - struct fsl_ssi_private *ssi_private, - unsigned int fmt) + struct fsl_ssi *ssi, unsigned int fmt) { - struct regmap *regs = ssi_private->regs; + struct regmap *regs = ssi->regs; u32 strcr = 0, stcr, srcr, scr, mask; u8 wm;

- ssi_private->dai_fmt = fmt; + ssi->dai_fmt = fmt;

- if (fsl_ssi_is_i2s_master(ssi_private) && IS_ERR(ssi_private->baudclk)) { + if (fsl_ssi_is_i2s_master(ssi) && IS_ERR(ssi->baudclk)) { dev_err(dev, "baudclk is missing which is necessary for master mode\n"); return -EINVAL; }

- fsl_ssi_setup_reg_vals(ssi_private); + fsl_ssi_setup_reg_vals(ssi);

regmap_read(regs, CCSR_SSI_SCR, &scr); scr &= ~(CCSR_SSI_SCR_SYN | CCSR_SSI_SCR_I2S_MODE_MASK); @@ -988,7 +982,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, stcr &= ~mask; srcr &= ~mask;

- ssi_private->i2s_mode = CCSR_SSI_SCR_NET; + ssi->i2s_mode = CCSR_SSI_SCR_NET; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: regmap_update_bits(regs, CCSR_SSI_STCCR, @@ -1000,10 +994,10 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFS: case SND_SOC_DAIFMT_CBS_CFS: - ssi_private->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_MASTER; + ssi->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_MASTER; break; case SND_SOC_DAIFMT_CBM_CFM: - ssi_private->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_SLAVE; + ssi->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_SLAVE; break; default: return -EINVAL; @@ -1028,12 +1022,12 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, CCSR_SSI_STCR_TXBIT0; break; case SND_SOC_DAIFMT_AC97: - ssi_private->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_NORMAL; + ssi->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_NORMAL; break; default: return -EINVAL; } - scr |= ssi_private->i2s_mode; + scr |= ssi->i2s_mode;

/* DAI clock inversion */ switch (fmt & SND_SOC_DAIFMT_INV_MASK) { @@ -1072,15 +1066,14 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, scr &= ~CCSR_SSI_SCR_SYS_CLK_EN; break; default: - if (!fsl_ssi_is_ac97(ssi_private)) + if (!fsl_ssi_is_ac97(ssi)) return -EINVAL; }

stcr |= strcr; srcr |= strcr;

- if (ssi_private->cpu_dai_drv.symmetric_rates - || fsl_ssi_is_ac97(ssi_private)) { + if (ssi->cpu_dai_drv.symmetric_rates || fsl_ssi_is_ac97(ssi)) { /* Need to clear RXDIR when using SYNC or AC97 mode */ srcr &= ~CCSR_SSI_SRCR_RXDIR; scr |= CCSR_SSI_SCR_SYN; @@ -1090,13 +1083,13 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, regmap_write(regs, CCSR_SSI_SRCR, srcr); regmap_write(regs, CCSR_SSI_SCR, scr);

- wm = ssi_private->fifo_watermark; + wm = ssi->fifo_watermark;

regmap_write(regs, CCSR_SSI_SFCSR, CCSR_SSI_SFCSR_TFWM0(wm) | CCSR_SSI_SFCSR_RFWM0(wm) | CCSR_SSI_SFCSR_TFWM1(wm) | CCSR_SSI_SFCSR_RFWM1(wm));

- if (ssi_private->use_dual_fifo) { + if (ssi->use_dual_fifo) { regmap_update_bits(regs, CCSR_SSI_SRCR, CCSR_SSI_SRCR_RFEN1, CCSR_SSI_SRCR_RFEN1); regmap_update_bits(regs, CCSR_SSI_STCR, CCSR_SSI_STCR_TFEN1, @@ -1106,7 +1099,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, }

if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_AC97) - fsl_ssi_setup_ac97(ssi_private); + fsl_ssi_setup_ac97(ssi);

return 0;

@@ -1117,12 +1110,12 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, */ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai);

- if (fsl_ssi_is_ac97(ssi_private)) + if (fsl_ssi_is_ac97(ssi)) return 0;

- return _fsl_ssi_set_dai_fmt(cpu_dai->dev, ssi_private, fmt); + return _fsl_ssi_set_dai_fmt(cpu_dai->dev, ssi, fmt); }

/** @@ -1133,8 +1126,8 @@ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, u32 rx_mask, int slots, int slot_width) { - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai); - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct regmap *regs = ssi->regs; u32 val;

/* The word length should be 8, 10, 12, 16, 18, 20, 22 or 24 */ @@ -1169,8 +1162,8 @@ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,

regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_SSIEN, val);

- ssi_private->slot_width = slot_width; - ssi_private->slots = slots; + ssi->slot_width = slot_width; + ssi->slots = slots;

return 0; } @@ -1188,33 +1181,33 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai); - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai); + struct regmap *regs = ssi->regs;

switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - fsl_ssi_tx_config(ssi_private, true); + fsl_ssi_tx_config(ssi, true); else - fsl_ssi_rx_config(ssi_private, true); + fsl_ssi_rx_config(ssi, true); break;

case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - fsl_ssi_tx_config(ssi_private, false); + fsl_ssi_tx_config(ssi, false); else - fsl_ssi_rx_config(ssi_private, false); + fsl_ssi_rx_config(ssi, false); break;

default: return -EINVAL; }

- if (fsl_ssi_is_ac97(ssi_private)) { + if (fsl_ssi_is_ac97(ssi)) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_write(regs, CCSR_SSI_SOR, CCSR_SSI_SOR_TX_CLR); else @@ -1226,11 +1219,11 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd,

static int fsl_ssi_dai_probe(struct snd_soc_dai *dai) { - struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai);

- if (ssi_private->soc->imx && ssi_private->use_dma) { - dai->playback_dma_data = &ssi_private->dma_params_tx; - dai->capture_dma_data = &ssi_private->dma_params_rx; + if (ssi->soc->imx && ssi->use_dma) { + dai->playback_dma_data = &ssi->dma_params_tx; + dai->capture_dma_data = &ssi->dma_params_rx; }

return 0; @@ -1292,7 +1285,7 @@ static struct snd_soc_dai_driver fsl_ssi_ac97_dai = { };

-static struct fsl_ssi_private *fsl_ac97_data; +static struct fsl_ssi *fsl_ac97_data;

static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) @@ -1383,24 +1376,24 @@ static void make_lowercase(char *s) }

static int fsl_ssi_imx_probe(struct platform_device *pdev, - struct fsl_ssi_private *ssi_private, void __iomem *iomem) + struct fsl_ssi *ssi, void __iomem *iomem) { struct device_node *np = pdev->dev.of_node; u32 dmas[4]; int ret;

- if (ssi_private->has_ipg_clk_name) - ssi_private->clk = devm_clk_get(&pdev->dev, "ipg"); + if (ssi->has_ipg_clk_name) + ssi->clk = devm_clk_get(&pdev->dev, "ipg"); else - ssi_private->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(ssi_private->clk)) { - ret = PTR_ERR(ssi_private->clk); + ssi->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(ssi->clk)) { + ret = PTR_ERR(ssi->clk); dev_err(&pdev->dev, "could not get clock: %d\n", ret); return ret; }

- if (!ssi_private->has_ipg_clk_name) { - ret = clk_prepare_enable(ssi_private->clk); + if (!ssi->has_ipg_clk_name) { + ret = clk_prepare_enable(ssi->clk); if (ret) { dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret); return ret; @@ -1410,27 +1403,27 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, /* For those SLAVE implementations, we ignore non-baudclk cases * and, instead, abandon MASTER mode that needs baud clock. */ - ssi_private->baudclk = devm_clk_get(&pdev->dev, "baud"); - if (IS_ERR(ssi_private->baudclk)) + ssi->baudclk = devm_clk_get(&pdev->dev, "baud"); + if (IS_ERR(ssi->baudclk)) dev_dbg(&pdev->dev, "could not get baud clock: %ld\n", - PTR_ERR(ssi_private->baudclk)); + PTR_ERR(ssi->baudclk));

- ssi_private->dma_params_tx.maxburst = ssi_private->dma_maxburst; - ssi_private->dma_params_rx.maxburst = ssi_private->dma_maxburst; - ssi_private->dma_params_tx.addr = ssi_private->ssi_phys + CCSR_SSI_STX0; - ssi_private->dma_params_rx.addr = ssi_private->ssi_phys + CCSR_SSI_SRX0; + ssi->dma_params_tx.maxburst = ssi->dma_maxburst; + ssi->dma_params_rx.maxburst = ssi->dma_maxburst; + ssi->dma_params_tx.addr = ssi->ssi_phys + CCSR_SSI_STX0; + ssi->dma_params_rx.addr = ssi->ssi_phys + CCSR_SSI_SRX0;

ret = of_property_read_u32_array(np, "dmas", dmas, 4); - if (ssi_private->use_dma && !ret && dmas[2] == IMX_DMATYPE_SSI_DUAL) { - ssi_private->use_dual_fifo = true; + if (ssi->use_dma && !ret && dmas[2] == IMX_DMATYPE_SSI_DUAL) { + ssi->use_dual_fifo = true; /* When using dual fifo mode, we need to keep watermark * as even numbers due to dma script limitation. */ - ssi_private->dma_params_tx.maxburst &= ~0x1; - ssi_private->dma_params_rx.maxburst &= ~0x1; + ssi->dma_params_tx.maxburst &= ~0x1; + ssi->dma_params_rx.maxburst &= ~0x1; }

- if (!ssi_private->use_dma) { + if (!ssi->use_dma) {

/* * Some boards use an incompatible codec. To get it @@ -1439,14 +1432,12 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, * situation. */

- ssi_private->fiq_params.irq = ssi_private->irq; - ssi_private->fiq_params.base = iomem; - ssi_private->fiq_params.dma_params_rx = - &ssi_private->dma_params_rx; - ssi_private->fiq_params.dma_params_tx = - &ssi_private->dma_params_tx; + ssi->fiq_params.irq = ssi->irq; + ssi->fiq_params.base = iomem; + ssi->fiq_params.dma_params_rx = &ssi->dma_params_rx; + ssi->fiq_params.dma_params_tx = &ssi->dma_params_tx;

- ret = imx_pcm_fiq_init(pdev, &ssi_private->fiq_params); + ret = imx_pcm_fiq_init(pdev, &ssi->fiq_params); if (ret) goto error_pcm; } else { @@ -1459,23 +1450,23 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev,

error_pcm:

- if (!ssi_private->has_ipg_clk_name) - clk_disable_unprepare(ssi_private->clk); + if (!ssi->has_ipg_clk_name) + clk_disable_unprepare(ssi->clk); return ret; }

static void fsl_ssi_imx_clean(struct platform_device *pdev, - struct fsl_ssi_private *ssi_private) + struct fsl_ssi *ssi) { - if (!ssi_private->use_dma) + if (!ssi->use_dma) imx_pcm_fiq_exit(pdev); - if (!ssi_private->has_ipg_clk_name) - clk_disable_unprepare(ssi_private->clk); + if (!ssi->has_ipg_clk_name) + clk_disable_unprepare(ssi->clk); }

static int fsl_ssi_probe(struct platform_device *pdev) { - struct fsl_ssi_private *ssi_private; + struct fsl_ssi *ssi; int ret = 0; struct device_node *np = pdev->dev.of_node; const struct of_device_id *of_id; @@ -1490,42 +1481,41 @@ static int fsl_ssi_probe(struct platform_device *pdev) if (!of_id || !of_id->data) return -EINVAL;

- ssi_private = devm_kzalloc(&pdev->dev, sizeof(*ssi_private), + ssi = devm_kzalloc(&pdev->dev, sizeof(*ssi), GFP_KERNEL); - if (!ssi_private) + if (!ssi) return -ENOMEM;

- ssi_private->soc = of_id->data; - ssi_private->dev = &pdev->dev; + ssi->soc = of_id->data; + ssi->dev = &pdev->dev;

sprop = of_get_property(np, "fsl,mode", NULL); if (sprop) { if (!strcmp(sprop, "ac97-slave")) - ssi_private->dai_fmt = SND_SOC_DAIFMT_AC97; + ssi->dai_fmt = SND_SOC_DAIFMT_AC97; }

- ssi_private->use_dma = !of_property_read_bool(np, - "fsl,fiq-stream-filter"); + ssi->use_dma = !of_property_read_bool(np, "fsl,fiq-stream-filter");

- if (fsl_ssi_is_ac97(ssi_private)) { - memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_ac97_dai, + if (fsl_ssi_is_ac97(ssi)) { + memcpy(&ssi->cpu_dai_drv, &fsl_ssi_ac97_dai, sizeof(fsl_ssi_ac97_dai));

- fsl_ac97_data = ssi_private; + fsl_ac97_data = ssi; } else { /* Initialize this copy of the CPU DAI driver structure */ - memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_dai_template, + memcpy(&ssi->cpu_dai_drv, &fsl_ssi_dai_template, sizeof(fsl_ssi_dai_template)); } - ssi_private->cpu_dai_drv.name = dev_name(&pdev->dev); + ssi->cpu_dai_drv.name = dev_name(&pdev->dev);

res = platform_get_resource(pdev, IORESOURCE_MEM, 0); iomem = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(iomem)) return PTR_ERR(iomem); - ssi_private->ssi_phys = res->start; + ssi->ssi_phys = res->start;

- if (ssi_private->soc->imx21regs) { + if (ssi->soc->imx21regs) { /* * According to datasheet imx21-class SSI * don't have SACC{ST,EN,DIS} regs. @@ -1537,42 +1527,42 @@ static int fsl_ssi_probe(struct platform_device *pdev)

ret = of_property_match_string(np, "clock-names", "ipg"); if (ret < 0) { - ssi_private->has_ipg_clk_name = false; - ssi_private->regs = devm_regmap_init_mmio(&pdev->dev, iomem, + ssi->has_ipg_clk_name = false; + ssi->regs = devm_regmap_init_mmio(&pdev->dev, iomem, &regconfig); } else { - ssi_private->has_ipg_clk_name = true; - ssi_private->regs = devm_regmap_init_mmio_clk(&pdev->dev, + ssi->has_ipg_clk_name = true; + ssi->regs = devm_regmap_init_mmio_clk(&pdev->dev, "ipg", iomem, &regconfig); } - if (IS_ERR(ssi_private->regs)) { + if (IS_ERR(ssi->regs)) { dev_err(&pdev->dev, "Failed to init register map\n"); - return PTR_ERR(ssi_private->regs); + return PTR_ERR(ssi->regs); }

- ssi_private->irq = platform_get_irq(pdev, 0); - if (ssi_private->irq < 0) { + ssi->irq = platform_get_irq(pdev, 0); + if (ssi->irq < 0) { dev_err(&pdev->dev, "no irq for node %s\n", pdev->name); - return ssi_private->irq; + return ssi->irq; }

/* Are the RX and the TX clocks locked? */ if (!of_find_property(np, "fsl,ssi-asynchronous", NULL)) { - if (!fsl_ssi_is_ac97(ssi_private)) { - ssi_private->cpu_dai_drv.symmetric_rates = 1; - ssi_private->cpu_dai_drv.symmetric_samplebits = 1; + if (!fsl_ssi_is_ac97(ssi)) { + ssi->cpu_dai_drv.symmetric_rates = 1; + ssi->cpu_dai_drv.symmetric_samplebits = 1; }

- ssi_private->cpu_dai_drv.symmetric_channels = 1; + ssi->cpu_dai_drv.symmetric_channels = 1; }

/* Determine the FIFO depth. */ iprop = of_get_property(np, "fsl,fifo-depth", NULL); if (iprop) - ssi_private->fifo_depth = be32_to_cpup(iprop); + ssi->fifo_depth = be32_to_cpup(iprop); else /* Older 8610 DTs didn't have the fifo-depth property */ - ssi_private->fifo_depth = 8; + ssi->fifo_depth = 8;

/* * Set the watermark for transmit FIFO 0 and receive FIFO 0. We don't @@ -1589,7 +1579,7 @@ static int fsl_ssi_probe(struct platform_device *pdev) * fiq it is probably better to use the biggest possible watermark * size. */ - switch (ssi_private->fifo_depth) { + switch (ssi->fifo_depth) { case 15: /* * 2 samples is not enough when running at high data @@ -1598,8 +1588,8 @@ static int fsl_ssi_probe(struct platform_device *pdev) * for the DMA to fill the FIFO before it's over/under * run. */ - ssi_private->fifo_watermark = 8; - ssi_private->dma_maxburst = 8; + ssi->fifo_watermark = 8; + ssi->dma_maxburst = 8; break; case 8: default: @@ -1610,21 +1600,21 @@ static int fsl_ssi_probe(struct platform_device *pdev) * I suspect this could be changed to be something to * leave some more space in the fifo. */ - ssi_private->fifo_watermark = ssi_private->fifo_depth - 2; - ssi_private->dma_maxburst = ssi_private->fifo_depth - 2; + ssi->fifo_watermark = ssi->fifo_depth - 2; + ssi->dma_maxburst = ssi->fifo_depth - 2; break; }

- dev_set_drvdata(&pdev->dev, ssi_private); + dev_set_drvdata(&pdev->dev, ssi);

- if (ssi_private->soc->imx) { - ret = fsl_ssi_imx_probe(pdev, ssi_private, iomem); + if (ssi->soc->imx) { + ret = fsl_ssi_imx_probe(pdev, ssi, iomem); if (ret) return ret; }

- if (fsl_ssi_is_ac97(ssi_private)) { - mutex_init(&ssi_private->ac97_reg_lock); + if (fsl_ssi_is_ac97(ssi)) { + mutex_init(&ssi->ac97_reg_lock); ret = snd_soc_set_ac97_ops_of_reset(&fsl_ssi_ac97_ops, pdev); if (ret) { dev_err(&pdev->dev, "could not set AC'97 ops\n"); @@ -1633,24 +1623,24 @@ static int fsl_ssi_probe(struct platform_device *pdev) }

ret = devm_snd_soc_register_component(&pdev->dev, &fsl_ssi_component, - &ssi_private->cpu_dai_drv, 1); + &ssi->cpu_dai_drv, 1); if (ret) { dev_err(&pdev->dev, "failed to register DAI: %d\n", ret); goto error_asoc_register; }

- if (ssi_private->use_dma) { - ret = devm_request_irq(&pdev->dev, ssi_private->irq, + if (ssi->use_dma) { + ret = devm_request_irq(&pdev->dev, ssi->irq, fsl_ssi_isr, 0, dev_name(&pdev->dev), - ssi_private); + ssi); if (ret < 0) { dev_err(&pdev->dev, "could not claim irq %u\n", - ssi_private->irq); + ssi->irq); goto error_asoc_register; } }

- ret = fsl_ssi_debugfs_create(&ssi_private->dbg_stats, &pdev->dev); + ret = fsl_ssi_debugfs_create(&ssi->dbg_stats, &pdev->dev); if (ret) goto error_asoc_register;

@@ -1675,20 +1665,18 @@ static int fsl_ssi_probe(struct platform_device *pdev) snprintf(name, sizeof(name), "snd-soc-%s", sprop); make_lowercase(name);

- ssi_private->pdev = - platform_device_register_data(&pdev->dev, name, 0, NULL, 0); - if (IS_ERR(ssi_private->pdev)) { - ret = PTR_ERR(ssi_private->pdev); + ssi->pdev = platform_device_register_data(&pdev->dev, name, 0, NULL, 0); + if (IS_ERR(ssi->pdev)) { + ret = PTR_ERR(ssi->pdev); dev_err(&pdev->dev, "failed to register platform: %d\n", ret); goto error_sound_card; }

done: - if (ssi_private->dai_fmt) - _fsl_ssi_set_dai_fmt(&pdev->dev, ssi_private, - ssi_private->dai_fmt); + if (ssi->dai_fmt) + _fsl_ssi_set_dai_fmt(&pdev->dev, ssi, ssi->dai_fmt);

- if (fsl_ssi_is_ac97(ssi_private)) { + if (fsl_ssi_is_ac97(ssi)) { u32 ssi_idx;

ret = of_property_read_u32(np, "cell-index", &ssi_idx); @@ -1697,11 +1685,10 @@ static int fsl_ssi_probe(struct platform_device *pdev) goto error_sound_card; }

- ssi_private->pdev = - platform_device_register_data(NULL, + ssi->pdev = platform_device_register_data(NULL, "ac97-codec", ssi_idx, NULL, 0); - if (IS_ERR(ssi_private->pdev)) { - ret = PTR_ERR(ssi_private->pdev); + if (IS_ERR(ssi->pdev)) { + ret = PTR_ERR(ssi->pdev); dev_err(&pdev->dev, "failed to register AC97 codec platform: %d\n", ret); @@ -1712,37 +1699,37 @@ static int fsl_ssi_probe(struct platform_device *pdev) return 0;

error_sound_card: - fsl_ssi_debugfs_remove(&ssi_private->dbg_stats); + fsl_ssi_debugfs_remove(&ssi->dbg_stats);

error_asoc_register: - if (fsl_ssi_is_ac97(ssi_private)) + if (fsl_ssi_is_ac97(ssi)) snd_soc_set_ac97_ops(NULL);

error_ac97_ops: - if (fsl_ssi_is_ac97(ssi_private)) - mutex_destroy(&ssi_private->ac97_reg_lock); + if (fsl_ssi_is_ac97(ssi)) + mutex_destroy(&ssi->ac97_reg_lock);

- if (ssi_private->soc->imx) - fsl_ssi_imx_clean(pdev, ssi_private); + if (ssi->soc->imx) + fsl_ssi_imx_clean(pdev, ssi);

return ret; }

static int fsl_ssi_remove(struct platform_device *pdev) { - struct fsl_ssi_private *ssi_private = dev_get_drvdata(&pdev->dev); + struct fsl_ssi *ssi = dev_get_drvdata(&pdev->dev);

- fsl_ssi_debugfs_remove(&ssi_private->dbg_stats); + fsl_ssi_debugfs_remove(&ssi->dbg_stats);

- if (ssi_private->pdev) - platform_device_unregister(ssi_private->pdev); + if (ssi->pdev) + platform_device_unregister(ssi->pdev);

- if (ssi_private->soc->imx) - fsl_ssi_imx_clean(pdev, ssi_private); + if (ssi->soc->imx) + fsl_ssi_imx_clean(pdev, ssi);

- if (fsl_ssi_is_ac97(ssi_private)) { + if (fsl_ssi_is_ac97(ssi)) { snd_soc_set_ac97_ops(NULL); - mutex_destroy(&ssi_private->ac97_reg_lock); + mutex_destroy(&ssi->ac97_reg_lock); }

return 0; @@ -1751,13 +1738,11 @@ static int fsl_ssi_remove(struct platform_device *pdev) #ifdef CONFIG_PM_SLEEP static int fsl_ssi_suspend(struct device *dev) { - struct fsl_ssi_private *ssi_private = dev_get_drvdata(dev); - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = dev_get_drvdata(dev); + struct regmap *regs = ssi->regs;

- regmap_read(regs, CCSR_SSI_SFCSR, - &ssi_private->regcache_sfcsr); - regmap_read(regs, CCSR_SSI_SACNT, - &ssi_private->regcache_sacnt); + regmap_read(regs, CCSR_SSI_SFCSR, &ssi->regcache_sfcsr); + regmap_read(regs, CCSR_SSI_SACNT, &ssi->regcache_sacnt);

regcache_cache_only(regs, true); regcache_mark_dirty(regs); @@ -1767,17 +1752,16 @@ static int fsl_ssi_suspend(struct device *dev)

static int fsl_ssi_resume(struct device *dev) { - struct fsl_ssi_private *ssi_private = dev_get_drvdata(dev); - struct regmap *regs = ssi_private->regs; + struct fsl_ssi *ssi = dev_get_drvdata(dev); + struct regmap *regs = ssi->regs;

regcache_cache_only(regs, false);

regmap_update_bits(regs, CCSR_SSI_SFCSR, CCSR_SSI_SFCSR_RFWM1_MASK | CCSR_SSI_SFCSR_TFWM1_MASK | CCSR_SSI_SFCSR_RFWM0_MASK | CCSR_SSI_SFCSR_TFWM0_MASK, - ssi_private->regcache_sfcsr); - regmap_write(regs, CCSR_SSI_SACNT, - ssi_private->regcache_sacnt); + ssi->regcache_sfcsr); + regmap_write(regs, CCSR_SSI_SACNT, ssi->regcache_sacnt);

return regcache_sync(regs); }

This patch refines the comments by: 1) Removing all out-of-date comments 2) Removing all not-so-useful comments 3) Unifying the styles of all comments 4) Simplifying over-descriptive comments 5) Adding comments to improve code readablity 6) Moving all register related comments to fsl_ssi.h 7) Adding comments to all register and field defines

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com ---

Changelog v1->v2 * Added some new comments at "SoC specific data" to be more precise. * Revised one comment in fsl_ssi_config(). * Revised the comment of fsl_ssi_setup_reg_vals(). * Added one comment for AC97 in fsl_ssi_setup_reg_vals(). * Revised the comment of fsl_ssi_hw_params() to be more precise. * Added some comments in _fsl_ssi_set_dai_fmt() to help understand the formats. * Added one comment in fsl_ssi_set_dai_fmt() to state why AC97 needs to bypass it. * Revised comments in fsl_ssi_set_dai_tdm_slot() to be more precise. * Revised comments around dual FIFO code in fsl_ssi_imx_probe() to be more precise.

sound/soc/fsl/fsl_ssi.c | 376 ++++++++++++++------------------------------ sound/soc/fsl/fsl_ssi.h | 67 +++++++- sound/soc/fsl/fsl_ssi_dbg.c | 12 +- 3 files changed, 188 insertions(+), 267 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index e903c92..796a7ea 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -187,42 +187,48 @@ struct fsl_ssi_soc_data { /** * fsl_ssi: per-SSI private data * - * @reg: Pointer to the regmap registers + * @regs: Pointer to the regmap registers * @irq: IRQ of this SSI * @cpu_dai_drv: CPU DAI driver for this device * * @dai_fmt: DAI configuration this device is currently used with - * @i2s_mode: i2s and network mode configuration of the device. Is used to - * switch between normal and i2s/network mode - * mode depending on the number of channels + * @i2s_mode: I2S and Network mode configuration of SCR register * @use_dma: DMA is used or FIQ with stream filter - * @use_dual_fifo: DMA with support for both FIFOs used - * @fifo_deph: Depth of the SSI FIFOs - * @slot_width: width of each DAI slot - * @slots: number of slots - * @rxtx_reg_val: Specific register settings for receive/transmit configuration + * @use_dual_fifo: DMA with support for dual FIFO mode + * @has_ipg_clk_name: If "ipg" is in the clock name list of device tree + * @fifo_depth: Depth of the SSI FIFOs + * @slot_width: Width of each DAI slot + * @slots: Number of slots + * @rxtx_reg_val: Specific RX/TX register settings * - * @clk: SSI clock - * @baudclk: SSI baud clock for master mode + * @clk: Clock source to access register + * @baudclk: Clock source to generate bit and frame-sync clocks * @baudclk_streams: Active streams that are using baudclk * + * @regcache_sfcsr: Cache sfcsr register value during suspend and resume + * @regcache_sacnt: Cache sacnt register value during suspend and resume + * * @dma_params_tx: DMA transmit parameters * @dma_params_rx: DMA receive parameters * @ssi_phys: physical address of the SSI registers * * @fiq_params: FIQ stream filtering parameters * - * @pdev: Pointer to pdev used for deprecated fsl-ssi sound card + * @pdev: Pointer to pdev when using fsl-ssi as sound card (ppc only) + * TODO: Should be replaced with simple-sound-card * * @dbg_stats: Debugging statistics * * @soc: SoC specific data + * @dev: Pointer to &pdev->dev + * + * @fifo_watermark: The FIFO watermark setting. Notifies DMA when there are + * @fifo_watermark or fewer words in TX fifo or + * @fifo_watermark or more empty words in RX fifo. + * @dma_maxburst: Max number of words to transfer in one go. So far, + * this is always the same as fifo_watermark. * - * @fifo_watermark: the FIFO watermark setting. Notifies DMA when - * there are @fifo_watermark or fewer words in TX fifo or - * @fifo_watermark or more empty words in RX fifo. - * @dma_maxburst: max number of words to transfer in one go. So far, - * this is always the same as fifo_watermark. + * @ac97_reg_lock: Mutex lock to serialize AC97 register access operations */ struct fsl_ssi { struct regmap *regs; @@ -243,20 +249,15 @@ struct fsl_ssi { struct clk *baudclk; unsigned int baudclk_streams;

- /* regcache for volatile regs */ u32 regcache_sfcsr; u32 regcache_sacnt;

- /* DMA params */ struct snd_dmaengine_dai_dma_data dma_params_tx; struct snd_dmaengine_dai_dma_data dma_params_rx; dma_addr_t ssi_phys;

- /* params for non-dma FIQ stream filtered mode */ struct imx_pcm_fiq_params fiq_params;

- /* Used when using fsl-ssi as sound-card. This is only used by ppc and - * should be replaced with simple-sound-card. */ struct platform_device *pdev;

struct fsl_ssi_dbg dbg_stats; @@ -271,19 +272,19 @@ struct fsl_ssi { };

/* - * imx51 and later SoCs have a slightly different IP that allows the - * SSI configuration while the SSI unit is running. - * - * More important, it is necessary on those SoCs to configure the - * sperate TX/RX DMA bits just before starting the stream - * (fsl_ssi_trigger). The SDMA unit has to be configured before fsl_ssi - * sends any DMA requests to the SDMA unit, otherwise it is not defined - * how the SDMA unit handles the DMA request. + * SoC specific data * - * SDMA units are present on devices starting at imx35 but the imx35 - * reference manual states that the DMA bits should not be changed - * while the SSI unit is running (SSIEN). So we support the necessary - * online configuration of fsl-ssi starting at imx51. + * Notes: + * 1) SSI in earlier SoCS has crtical bits in control registers that + * cannot be changed after SSI starts running -- a software reset + * (set SSIEN to 0) is required to change their values. So adding + * an offline_config flag for these SoCs. + * 2) SDMA is available since imx35. However, imx35 does not support + * DMA bits changing when SSI is running, so set offline_config. + * 3) imx51 and later versions support register configurations when + * SSI is running (SSIEN); For these versions, DMA needs to be + * configured before SSI sends DMA request to avoid an undefined + * DMA request on the SDMA side. */

static struct fsl_ssi_soc_data fsl_ssi_mpc8610 = { @@ -342,18 +343,7 @@ static bool fsl_ssi_is_i2s_cbm_cfs(struct fsl_ssi *ssi) return (ssi->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFS; } -/** - * fsl_ssi_isr: SSI interrupt handler - * - * Although it's possible to use the interrupt handler to send and receive - * data to/from the SSI, we use the DMA instead. Programming is more - * complicated, but the performance is much better. - * - * This interrupt handler is used only to gather statistics. - * - * @irq: IRQ of the SSI device - * @dev_id: pointer to the fsl_ssi structure for this SSI device - */ + static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) { struct fsl_ssi *ssi = dev_id; @@ -361,10 +351,6 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) __be32 sisr; __be32 sisr2;

- /* We got an interrupt, so read the status register to see what we - were interrupted for. We mask it with the Interrupt Enable register - so that we only check for events that we're interested in. - */ regmap_read(regs, CCSR_SSI_SISR, &sisr);

sisr2 = sisr & ssi->soc->sisr_write_mask; @@ -377,8 +363,8 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) return IRQ_HANDLED; }

-/* - * Enable/Disable all rx/tx config flags at once. +/** + * Enable or disable all rx/tx config flags at once */ static void fsl_ssi_rxtx_config(struct fsl_ssi *ssi, bool enable) { @@ -405,13 +391,8 @@ static void fsl_ssi_rxtx_config(struct fsl_ssi *ssi, bool enable) } }

-/* - * Clear RX or TX FIFO to remove samples from the previous - * stream session which may be still present in the FIFO and - * may introduce bad samples and/or channel slipping. - * - * Note: The SOR is not documented in recent IMX datasheet, but - * is described in IMX51 reference manual at section 56.3.3.15. +/** + * Clear remaining data in the FIFO to avoid dirty data or channel slipping */ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) { @@ -424,7 +405,7 @@ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) } }

-/* +/** * Calculate the bits that have to be disabled for the current stream that is * getting disabled. This keeps the bits enabled that are necessary for the * second stream to work if 'stream_active' is true. @@ -444,9 +425,8 @@ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) ((vals_disable) & \ ((vals_disable) ^ ((vals_stream) * (u32)!!(stream_active))))

-/* - * Enable/Disable a ssi configuration. You have to pass either - * ssi->rxtx_reg_val.rx or tx as vals parameter. +/** + * Enable or disable SSI configuration. */ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, struct fsl_ssi_reg_val *vals) @@ -467,24 +447,23 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, else keep_active = 0;

- /* Find the other direction values rx or tx which we do not want to - * modify */ + /* Get the opposite direction to keep its values untouched */ if (&ssi->rxtx_reg_val.rx == vals) avals = &ssi->rxtx_reg_val.tx; else avals = &ssi->rxtx_reg_val.rx;

- /* If vals should be disabled, start with disabling the unit */ if (!enable) { + /* Exclude necessary bits for the opposite stream */ u32 scr = fsl_ssi_disable_val(vals->scr, avals->scr, keep_active); + /* Safely disable SCR register for the stream */ regmap_update_bits(regs, CCSR_SSI_SCR, scr, 0); }

/* - * We are running on a SoC which does not support online SSI - * reconfiguration, so we have to enable all necessary flags at once - * even if we do not use them later (capture and playback configuration) + * Online configuration is not supported + * Enable or Disable all necessary bits at once */ if (ssi->soc->offline_config) { if ((enable && !nr_active_streams) || @@ -494,10 +473,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, goto config_done; }

- /* - * Configure single direction units while the SSI unit is running - * (online configuration) - */ + /* Online configure single direction while SSI is running */ if (enable) { fsl_ssi_fifo_clear(ssi, vals->scr & CCSR_SSI_SCR_RE);

@@ -509,16 +485,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, u32 srcr; u32 stcr;

- /* - * Disabling the necessary flags for one of rx/tx while the - * other stream is active is a little bit more difficult. We - * have to disable only those flags that differ between both - * streams (rx XOR tx) and that are set in the stream that is - * disabled now. Otherwise we could alter flags of the other - * stream - */ - - /* These assignments are simply vals without bits set in avals*/ + /* Exclude necessary bits for the opposite stream */ sier = fsl_ssi_disable_val(vals->sier, avals->sier, keep_active); srcr = fsl_ssi_disable_val(vals->srcr, avals->srcr, @@ -526,6 +493,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, stcr = fsl_ssi_disable_val(vals->stcr, avals->stcr, keep_active);

+ /* Safely disable other control registers for the stream */ regmap_update_bits(regs, CCSR_SSI_SRCR, srcr, 0); regmap_update_bits(regs, CCSR_SSI_STCR, stcr, 0); regmap_update_bits(regs, CCSR_SSI_SIER, sier, 0); @@ -534,26 +502,17 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, config_done: /* Enabling of subunits is done after configuration */ if (enable) { + /* Start DMA before setting TE to avoid underrun */ + /* TODO: FIQ cases might also need this upon testing */ if (ssi->use_dma && (vals->scr & CCSR_SSI_SCR_TE)) { - /* - * Be sure the Tx FIFO is filled when TE is set. - * Otherwise, there are some chances to start the - * playback with some void samples inserted first, - * generating a channel slip. - * - * First, SSIEN must be set, to let the FIFO be filled. - * - * Notes: - * - Limit this fix to the DMA case until FIQ cases can - * be tested. - * - Limit the length of the busy loop to not lock the - * system too long, even if 1-2 loops are sufficient - * in general. - */ int i; int max_loop = 100; + + /* Enable SSI first to send TX DMA request */ regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_SSIEN, CCSR_SSI_SCR_SSIEN); + + /* Wait until TX FIFO not empty -- DMA working */ for (i = 0; i < max_loop; i++) { u32 sfcsr; regmap_read(regs, CCSR_SSI_SFCSR, &sfcsr); @@ -565,6 +524,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, "Timeout waiting TX FIFO filling\n"); } } + /* Enable all remaining bits */ regmap_update_bits(regs, CCSR_SSI_SCR, vals->scr, vals->scr); } } @@ -581,20 +541,9 @@ static void fsl_ssi_tx_ac97_saccst_setup(struct fsl_ssi *ssi)

/* no SACC{ST,EN,DIS} regs on imx21-class SSI */ if (!ssi->soc->imx21regs) { - /* - * Note that these below aren't just normal registers. - * They are a way to disable or enable bits in SACCST - * register: - * - writing a '1' bit at some position in SACCEN sets the - * relevant bit in SACCST, - * - writing a '1' bit at some position in SACCDIS unsets - * the relevant bit in SACCST register. - * - * The two writes below first disable all channels slots, - * then enable just slots 3 & 4 ("PCM Playback Left Channel" - * and "PCM Playback Right Channel"). - */ + /* Disable all channel slots */ regmap_write(regs, CCSR_SSI_SACCDIS, 0xff); + /* Enable slots 3 & 4 -- PCM Playback Left & Right channels */ regmap_write(regs, CCSR_SSI_SACCEN, 0x300); } } @@ -602,23 +551,11 @@ static void fsl_ssi_tx_ac97_saccst_setup(struct fsl_ssi *ssi) static void fsl_ssi_tx_config(struct fsl_ssi *ssi, bool enable) { /* - * Why are we setting up SACCST everytime we are starting a - * playback? - * Some CODECs (like VT1613 CODEC on UDOO board) like to - * (sometimes) set extra bits in their SLOTREQ requests. - * When a bit is set in a SLOTREQ request then SSI sets the - * relevant bit in SACCST automatically (it is enough if a bit was - * set in a SLOTREQ just once, bits in SACCST are 'sticky'). - * If an extra slot gets enabled that's a disaster for playback - * because some of normal left or right channel samples are - * redirected instead to this extra slot. + * SACCST might be modified via AC Link by a CODEC if it sends + * extra bits in their SLOTREQ requests, which'll accidentally + * send valid data to slots other than normal playback slots. * - * A workaround implemented in fsl-asoc-card of setting an - * appropriate CODEC register so that slots 3 & 4 (the normal - * stereo playback slots) are used for S/PDIF seems to mostly fix - * this issue on the UDOO board but since this CODEC is so - * untrustworthy let's play safe here and make sure that no extra - * slots are enabled every time a playback is started. + * To be safe, configure SACCST right before TX starts. */ if (enable && fsl_ssi_is_ac97(ssi)) fsl_ssi_tx_ac97_saccst_setup(ssi); @@ -626,10 +563,8 @@ static void fsl_ssi_tx_config(struct fsl_ssi *ssi, bool enable) fsl_ssi_config(ssi, enable, &ssi->rxtx_reg_val.tx); }

-/* - * Setup rx/tx register values used to enable/disable the streams. These will - * be used later in fsl_ssi_config to setup the streams without the need to - * check for all different SSI modes. +/** + * Cache critical bits of SIER, SRCR, STCR and SCR to later set them safely */ static void fsl_ssi_setup_reg_vals(struct fsl_ssi *ssi) { @@ -642,6 +577,7 @@ static void fsl_ssi_setup_reg_vals(struct fsl_ssi *ssi) reg->tx.stcr = CCSR_SSI_STCR_TFEN0; reg->tx.scr = 0;

+ /* AC97 has already enabled SSIEN, RE and TE, so ignore them */ if (!fsl_ssi_is_ac97(ssi)) { reg->rx.scr = CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_RE; reg->tx.scr = CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_TE; @@ -663,24 +599,17 @@ static void fsl_ssi_setup_ac97(struct fsl_ssi *ssi) { struct regmap *regs = ssi->regs;

- /* - * Setup the clock control register - */ + /* Setup the clock control register */ regmap_write(regs, CCSR_SSI_STCCR, CCSR_SSI_SxCCR_WL(17) | CCSR_SSI_SxCCR_DC(13)); regmap_write(regs, CCSR_SSI_SRCCR, CCSR_SSI_SxCCR_WL(17) | CCSR_SSI_SxCCR_DC(13));

- /* - * Enable AC97 mode and startup the SSI - */ + /* Enable AC97 mode and startup the SSI */ regmap_write(regs, CCSR_SSI_SACNT, CCSR_SSI_SACNT_AC97EN | CCSR_SSI_SACNT_FV);

- /* - * Enable SSI, Transmit and Receive. AC97 has to communicate with the - * codec before a stream is started. - */ + /* AC97 has to communicate with codec before starting a stream */ regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_TE | CCSR_SSI_SCR_RE, CCSR_SSI_SCR_SSIEN | CCSR_SSI_SCR_TE | CCSR_SSI_SCR_RE); @@ -688,14 +617,6 @@ static void fsl_ssi_setup_ac97(struct fsl_ssi *ssi) regmap_write(regs, CCSR_SSI_SOR, CCSR_SSI_SOR_WAIT(3)); }

-/** - * fsl_ssi_startup: create a new substream - * - * This is the first function called when a stream is opened. - * - * If this is the first stream open, then grab the IRQ and program most of - * the SSI registers. - */ static int fsl_ssi_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -707,7 +628,8 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, if (ret) return ret;

- /* When using dual fifo mode, it is safer to ensure an even period + /* + * When using dual fifo mode, it is safer to ensure an even period * size. If appearing to an odd number while DMA always starts its * task from fifo0, fifo1 would be neglected at the end of each * period. But SSI would still access fifo1 with an invalid data. @@ -719,10 +641,6 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, return 0; }

-/** - * fsl_ssi_shutdown: shutdown the SSI - * - */ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -734,7 +652,7 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, }

/** - * fsl_ssi_set_bclk - configure Digital Audio Interface bit clock + * Configure Digital Audio Interface bit clock * * Note: This function can be only called when using SSI as DAI master * @@ -851,17 +769,15 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, }

/** - * fsl_ssi_hw_params - program the sample size - * - * Most of the SSI registers have been programmed in the startup function, - * but the word length must be programmed here. Unfortunately, programming - * the SxCCR.WL bits requires the SSI to be temporarily disabled. This can - * cause a problem with supporting simultaneous playback and capture. If - * the SSI is already playing a stream, then that stream may be temporarily - * stopped when you start capture. + * Configure SSI based on PCM hardware parameters * - * Note: The SxCCR.DC and SxCCR.PM bits are only used if the SSI is the - * clock master. + * Notes: + * 1) SxCCR.WL bits are critical bits that require SSI to be temporarily + * disabled on offline_config SoCs. Even for online configurable SoCs + * running in synchronous mode (both TX and RX use STCCR), it is not + * safe to re-configure them when both two streams start running. + * 2) SxCCR.PM, SxCCR.DIV2 and SxCCR.PSR bits will be configured in the + * fsl_ssi_set_bclk() if SSI is the DAI clock master. */ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *cpu_dai) @@ -878,10 +794,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, regmap_read(regs, CCSR_SSI_SCR, &scr_val); enabled = scr_val & CCSR_SSI_SCR_SSIEN;

- /* - * If we're in synchronous mode, and the SSI is already enabled, - * then STCCR is already set properly. - */ + /* To support simultaneous TX and RX, bypass it if SSI is enabled */ if (enabled && ssi->cpu_dai_drv.symmetric_rates) return 0;

@@ -902,10 +815,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream,

if (!fsl_ssi_is_ac97(ssi)) { u8 i2smode; - /* - * Switch to normal net mode in order to have a frame sync - * signal every 32 bits instead of 16 bits - */ + /* Normal + Network mode to send 16-bit data in 32-bit frames */ if (fsl_ssi_is_i2s_cbm_cfs(ssi) && sample_size == 16) i2smode = CCSR_SSI_SCR_I2S_MODE_NORMAL | CCSR_SSI_SCR_NET; @@ -917,16 +827,6 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, channels == 1 ? 0 : i2smode); }

- /* - * FIXME: The documentation says that SxCCR[WL] should not be - * modified while the SSI is enabled. The only time this can - * happen is if we're trying to do simultaneous playback and - * capture in asynchronous mode. Unfortunately, I have been enable - * to get that to work at all on the P1022DS. Therefore, we don't - * bother to disable/enable the SSI when setting SxCCR[WL], because - * the SSI will stop anyway. Maybe one day, this will get fixed. - */ - /* In synchronous mode, the SSI uses STCCR for capture */ if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK) || ssi->cpu_dai_drv.symmetric_rates) @@ -972,6 +872,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev,

regmap_read(regs, CCSR_SSI_SCR, &scr); scr &= ~(CCSR_SSI_SCR_SYN | CCSR_SSI_SCR_I2S_MODE_MASK); + /* Synchronize frame sync clock for TE to avoid data slipping */ scr |= CCSR_SSI_SCR_SYNC_TX_FS;

mask = CCSR_SSI_STCR_TXBIT0 | CCSR_SSI_STCR_TFDIR | CCSR_SSI_STCR_TXDIR | @@ -982,6 +883,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, stcr &= ~mask; srcr &= ~mask;

+ /* Use Network mode as default */ ssi->i2s_mode = CCSR_SSI_SCR_NET; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: @@ -1022,6 +924,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, CCSR_SSI_STCR_TXBIT0; break; case SND_SOC_DAIFMT_AC97: + /* Data on falling edge of bclk, frame high, 1clk before data */ ssi->i2s_mode |= CCSR_SSI_SCR_I2S_MODE_NORMAL; break; default: @@ -1054,13 +957,16 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, /* DAI clock master masks */ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: + /* Output bit and frame sync clocks */ strcr |= CCSR_SSI_STCR_TFDIR | CCSR_SSI_STCR_TXDIR; scr |= CCSR_SSI_SCR_SYS_CLK_EN; break; case SND_SOC_DAIFMT_CBM_CFM: + /* Input bit or frame sync clocks */ scr &= ~CCSR_SSI_SCR_SYS_CLK_EN; break; case SND_SOC_DAIFMT_CBM_CFS: + /* Input bit clock but output frame sync clock */ strcr &= ~CCSR_SSI_STCR_TXDIR; strcr |= CCSR_SSI_STCR_TFDIR; scr &= ~CCSR_SSI_SCR_SYS_CLK_EN; @@ -1073,8 +979,8 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, stcr |= strcr; srcr |= strcr;

+ /* Set SYN mode and clear RXDIR bit when using SYN or AC97 mode */ if (ssi->cpu_dai_drv.symmetric_rates || fsl_ssi_is_ac97(ssi)) { - /* Need to clear RXDIR when using SYNC or AC97 mode */ srcr &= ~CCSR_SSI_SRCR_RXDIR; scr |= CCSR_SSI_SCR_SYN; } @@ -1106,12 +1012,13 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, }

/** - * fsl_ssi_set_dai_fmt - configure Digital Audio Interface Format. + * Configure Digital Audio Interface (DAI) Format */ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai);

+ /* AC97 configured DAIFMT earlier in the probe() */ if (fsl_ssi_is_ac97(ssi)) return 0;

@@ -1119,9 +1026,7 @@ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) }

/** - * fsl_ssi_set_dai_tdm_slot - set TDM slot number - * - * Note: This function can be only called when using SSI as DAI master + * Set TDM slot number and slot width */ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, u32 rx_mask, int slots, int slot_width) @@ -1149,17 +1054,17 @@ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, regmap_update_bits(regs, CCSR_SSI_SRCCR, CCSR_SSI_SxCCR_DC_MASK, CCSR_SSI_SxCCR_DC(slots));

- /* The register SxMSKs needs SSI to provide essential clock due to - * hardware design. So we here temporarily enable SSI to set them. - */ + /* Save SSIEN bit of the SCR register */ regmap_read(regs, CCSR_SSI_SCR, &val); val &= CCSR_SSI_SCR_SSIEN; + /* Temporarily enable SSI to allow SxMSKs to be configurable */ regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_SSIEN, CCSR_SSI_SCR_SSIEN);

regmap_write(regs, CCSR_SSI_STMSK, ~tx_mask); regmap_write(regs, CCSR_SSI_SRMSK, ~rx_mask);

+ /* Restore the value of SSIEN bit */ regmap_update_bits(regs, CCSR_SSI_SCR, CCSR_SSI_SCR_SSIEN, val);

ssi->slot_width = slot_width; @@ -1169,13 +1074,7 @@ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, }

/** - * fsl_ssi_trigger: start and stop the DMA transfer. - * - * This function is called by ALSA to start, stop, pause, and resume the DMA - * transfer of data. - * - * The DMA channel is in external master start and pause mode, which - * means the SSI completely controls the flow of data. + * Start or stop SSI and corresponding DMA transaction. */ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) @@ -1207,6 +1106,7 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd, return -EINVAL; }

+ /* Clear corresponding FIFO */ if (fsl_ssi_is_ac97(ssi)) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_write(regs, CCSR_SSI_SOR, CCSR_SSI_SOR_TX_CLR); @@ -1239,7 +1139,6 @@ static const struct snd_soc_dai_ops fsl_ssi_dai_ops = { .trigger = fsl_ssi_trigger, };

-/* Template for the CPU dai driver structure */ static struct snd_soc_dai_driver fsl_ssi_dai_template = { .probe = fsl_ssi_dai_probe, .playback = { @@ -1383,6 +1282,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, u32 dmas[4]; int ret;

+ /* Backward compatible for a DT without ipg clock name assigned */ if (ssi->has_ipg_clk_name) ssi->clk = devm_clk_get(dev, "ipg"); else @@ -1393,6 +1293,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, return ret; }

+ /* Enable the clock since regmap will not handle it in this case */ if (!ssi->has_ipg_clk_name) { ret = clk_prepare_enable(ssi->clk); if (ret) { @@ -1401,9 +1302,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, } }

- /* For those SLAVE implementations, we ignore non-baudclk cases - * and, instead, abandon MASTER mode that needs baud clock. - */ + /* Do not error out for slave cases that live without a baud clock */ ssi->baudclk = devm_clk_get(dev, "baud"); if (IS_ERR(ssi->baudclk)) dev_dbg(dev, "could not get baud clock: %ld\n", @@ -1414,25 +1313,20 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, ssi->dma_params_tx.addr = ssi->ssi_phys + CCSR_SSI_STX0; ssi->dma_params_rx.addr = ssi->ssi_phys + CCSR_SSI_SRX0;

+ /* Set to dual FIFO mode according to the SDMA sciprt */ ret = of_property_read_u32_array(np, "dmas", dmas, 4); if (ssi->use_dma && !ret && dmas[2] == IMX_DMATYPE_SSI_DUAL) { ssi->use_dual_fifo = true; - /* When using dual fifo mode, we need to keep watermark - * as even numbers due to dma script limitation. + /* + * Use even numbers to avoid channel swap due to SDMA + * script design */ ssi->dma_params_tx.maxburst &= ~0x1; ssi->dma_params_rx.maxburst &= ~0x1; }

if (!ssi->use_dma) { - - /* - * Some boards use an incompatible codec. To get it - * working, we are using imx-fiq-pcm-audio, that - * can handle those codecs. DMA is not possible in this - * situation. - */ - + /* Use imx-fiq-pcm-audio for codec incompatible with DMA */ ssi->fiq_params.irq = ssi->irq; ssi->fiq_params.base = iomem; ssi->fiq_params.dma_params_rx = &ssi->dma_params_rx; @@ -1490,12 +1384,14 @@ static int fsl_ssi_probe(struct platform_device *pdev) ssi->soc = of_id->data; ssi->dev = dev;

+ /* Check if being used in AC97 mode */ sprop = of_get_property(np, "fsl,mode", NULL); if (sprop) { if (!strcmp(sprop, "ac97-slave")) ssi->dai_fmt = SND_SOC_DAIFMT_AC97; }

+ /* Select DMA or FIQ */ ssi->use_dma = !of_property_read_bool(np, "fsl,fiq-stream-filter");

if (fsl_ssi_is_ac97(ssi)) { @@ -1504,7 +1400,6 @@ static int fsl_ssi_probe(struct platform_device *pdev)

fsl_ac97_data = ssi; } else { - /* Initialize this copy of the CPU DAI driver structure */ memcpy(&ssi->cpu_dai_drv, &fsl_ssi_dai_template, sizeof(fsl_ssi_dai_template)); } @@ -1517,10 +1412,7 @@ static int fsl_ssi_probe(struct platform_device *pdev) ssi->ssi_phys = res->start;

if (ssi->soc->imx21regs) { - /* - * According to datasheet imx21-class SSI - * don't have SACC{ST,EN,DIS} regs. - */ + /* No SACC{ST,EN,DIS} regs in imx21-class SSI */ regconfig.max_register = CCSR_SSI_SRMSK; regconfig.num_reg_defaults_raw = CCSR_SSI_SRMSK / sizeof(uint32_t) + 1; @@ -1546,7 +1438,7 @@ static int fsl_ssi_probe(struct platform_device *pdev) return ssi->irq; }

- /* Are the RX and the TX clocks locked? */ + /* Set software limitations for synchronous mode */ if (!of_find_property(np, "fsl,ssi-asynchronous", NULL)) { if (!fsl_ssi_is_ac97(ssi)) { ssi->cpu_dai_drv.symmetric_rates = 1; @@ -1556,50 +1448,28 @@ static int fsl_ssi_probe(struct platform_device *pdev) ssi->cpu_dai_drv.symmetric_channels = 1; }

- /* Determine the FIFO depth. */ + /* Fetch FIFO depth; Set to 8 for older DT without this property */ iprop = of_get_property(np, "fsl,fifo-depth", NULL); if (iprop) ssi->fifo_depth = be32_to_cpup(iprop); else - /* Older 8610 DTs didn't have the fifo-depth property */ ssi->fifo_depth = 8;

/* - * Set the watermark for transmit FIFO 0 and receive FIFO 0. We don't - * use FIFO 1 but set the watermark appropriately nontheless. - * We program the transmit water to signal a DMA transfer - * if there are N elements left in the FIFO. For chips with 15-deep - * FIFOs, set watermark to 8. This allows the SSI to operate at a - * high data rate without channel slipping. Behavior is unchanged - * for the older chips with a fifo depth of only 8. A value of 4 - * might be appropriate for the older chips, but is left at - * fifo_depth-2 until sombody has a chance to test. + * Configure TX and RX DMA watermarks. * - * We set the watermark on the same level as the DMA burstsize. For - * fiq it is probably better to use the biggest possible watermark - * size. + * Values should be tested to avoid FIFO under/over run. Set maxburst + * to fifo_watermark to maxiumize DMA transaction to reduce overhead. */ switch (ssi->fifo_depth) { case 15: - /* - * 2 samples is not enough when running at high data - * rates (like 48kHz @ 16 bits/channel, 16 channels) - * 8 seems to split things evenly and leave enough time - * for the DMA to fill the FIFO before it's over/under - * run. - */ + /* Tested with cases running at 48kHz @ 16 bits x 16 channels */ ssi->fifo_watermark = 8; ssi->dma_maxburst = 8; break; case 8: default: - /* - * maintain old behavior for older chips. - * Keeping it the same because I don't have an older - * board to test with. - * I suspect this could be changed to be something to - * leave some more space in the fifo. - */ + /* Use old watermark configurations for older chips */ ssi->fifo_watermark = ssi->fifo_depth - 2; ssi->dma_maxburst = ssi->fifo_depth - 2; break; @@ -1642,18 +1512,14 @@ static int fsl_ssi_probe(struct platform_device *pdev) if (ret) goto error_asoc_register;

- /* - * If codec-handle property is missing from SSI node, we assume - * that the machine driver uses new binding which does not require - * SSI driver to trigger machine driver's probe. - */ + /* Bypass it if using newer DT bindings of ASoC machine drivers */ if (!of_get_property(np, "codec-handle", NULL)) goto done;

- /* Trigger the machine driver's probe function. The platform driver - * name of the machine driver is taken from /compatible property of the - * device tree. We also pass the address of the CPU DAI driver - * structure. + /* + * Backward compatible for older bindings by manually triggering the + * machine driver's probe(). Use /compatible property, including the + * address of CPU DAI driver structure, as the name of machine driver. */ sprop = of_get_property(of_find_node_by_path("/"), "compatible", NULL); /* Sometimes the compatible name has a "fsl," prefix, so we strip it. */ diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 5065105..1ad3bde 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -1,5 +1,5 @@ /* - * fsl_ssi.h - ALSA SSI interface for the Freescale MPC8610 SoC + * fsl_ssi.h - ALSA SSI interface for the Freescale MPC8610 and i.MX SoC * * Author: Timur Tabi timur@freescale.com * @@ -12,31 +12,75 @@ #ifndef _MPC8610_I2S_H #define _MPC8610_I2S_H

-/* SSI registers */ +/* -- SSI Register Map -- */ + +/* SSI Transmit Data Register 0 */ #define CCSR_SSI_STX0 0x00 +/* SSI Transmit Data Register 1 */ #define CCSR_SSI_STX1 0x04 +/* SSI Receive Data Register 0 */ #define CCSR_SSI_SRX0 0x08 +/* SSI Receive Data Register 1 */ #define CCSR_SSI_SRX1 0x0c +/* SSI Control Register */ #define CCSR_SSI_SCR 0x10 +/* SSI Interrupt Status Register */ #define CCSR_SSI_SISR 0x14 +/* SSI Interrupt Enable Register */ #define CCSR_SSI_SIER 0x18 +/* SSI Transmit Configuration Register */ #define CCSR_SSI_STCR 0x1c +/* SSI Receive Configuration Register */ #define CCSR_SSI_SRCR 0x20 +/* SSI Transmit Clock Control Register */ #define CCSR_SSI_STCCR 0x24 +/* SSI Receive Clock Control Register */ #define CCSR_SSI_SRCCR 0x28 +/* SSI FIFO Control/Status Register */ #define CCSR_SSI_SFCSR 0x2c +/* + * SSI Test Register (Intended for debugging purposes only) + * + * Note: STR is not documented in recent IMX datasheet, but + * is described in IMX51 reference manual at section 56.3.3.14 + */ #define CCSR_SSI_STR 0x30 +/* + * SSI Option Register (Intended for internal use only) + * + * Note: SOR is not documented in recent IMX datasheet, but + * is described in IMX51 reference manual at section 56.3.3.15 + */ #define CCSR_SSI_SOR 0x34 +/* SSI AC97 Control Register */ #define CCSR_SSI_SACNT 0x38 +/* SSI AC97 Command Address Register */ #define CCSR_SSI_SACADD 0x3c +/* SSI AC97 Command Data Register */ #define CCSR_SSI_SACDAT 0x40 +/* SSI AC97 Tag Register */ #define CCSR_SSI_SATAG 0x44 +/* SSI Transmit Time Slot Mask Register */ #define CCSR_SSI_STMSK 0x48 +/* SSI Receive Time Slot Mask Register */ #define CCSR_SSI_SRMSK 0x4c +/* + * SSI AC97 Channel Status Register + * + * The status could be changed by: + * 1) Writing a '1' bit at some position in SACCEN sets relevant bit in SACCST + * 2) Writing a '1' bit at some position in SACCDIS unsets the relevant bit + * 3) Receivng a '1' in SLOTREQ bit from external CODEC via AC Link + */ #define CCSR_SSI_SACCST 0x50 +/* SSI AC97 Channel Enable Register -- Set bits in SACCST */ #define CCSR_SSI_SACCEN 0x54 +/* SSI AC97 Channel Disable Register -- Clear bits in SACCST */ #define CCSR_SSI_SACCDIS 0x58

+/* -- SSI Register Field Maps -- */ + +/* SSI Control Register -- CCSR_SSI_SCR 0x10 */ #define CCSR_SSI_SCR_SYNC_TX_FS 0x00001000 #define CCSR_SSI_SCR_RFR_CLK_DIS 0x00000800 #define CCSR_SSI_SCR_TFR_CLK_DIS 0x00000400 @@ -52,6 +96,7 @@ #define CCSR_SSI_SCR_TE 0x00000002 #define CCSR_SSI_SCR_SSIEN 0x00000001

+/* SSI Interrupt Status Register -- CCSR_SSI_SISR 0x14 */ #define CCSR_SSI_SISR_RFRC 0x01000000 #define CCSR_SSI_SISR_TFRC 0x00800000 #define CCSR_SSI_SISR_CMDAU 0x00040000 @@ -74,6 +119,7 @@ #define CCSR_SSI_SISR_TFE1 0x00000002 #define CCSR_SSI_SISR_TFE0 0x00000001

+/* SSI Interrupt Enable Register -- CCSR_SSI_SIER 0x18 */ #define CCSR_SSI_SIER_RFRC_EN 0x01000000 #define CCSR_SSI_SIER_TFRC_EN 0x00800000 #define CCSR_SSI_SIER_RDMAE 0x00400000 @@ -100,6 +146,7 @@ #define CCSR_SSI_SIER_TFE1_EN 0x00000002 #define CCSR_SSI_SIER_TFE0_EN 0x00000001

+/* SSI Transmit Configuration Register -- CCSR_SSI_STCR 0x1C */ #define CCSR_SSI_STCR_TXBIT0 0x00000200 #define CCSR_SSI_STCR_TFEN1 0x00000100 #define CCSR_SSI_STCR_TFEN0 0x00000080 @@ -111,6 +158,7 @@ #define CCSR_SSI_STCR_TFSL 0x00000002 #define CCSR_SSI_STCR_TEFS 0x00000001

+/* SSI Receive Configuration Register -- CCSR_SSI_SRCR 0x20 */ #define CCSR_SSI_SRCR_RXEXT 0x00000400 #define CCSR_SSI_SRCR_RXBIT0 0x00000200 #define CCSR_SSI_SRCR_RFEN1 0x00000100 @@ -123,7 +171,10 @@ #define CCSR_SSI_SRCR_RFSL 0x00000002 #define CCSR_SSI_SRCR_REFS 0x00000001

-/* STCCR and SRCCR */ +/* + * SSI Transmit Clock Control Register -- CCSR_SSI_STCCR 0x24 + * SSI Receive Clock Control Register -- CCSR_SSI_SRCCR 0x28 + */ #define CCSR_SSI_SxCCR_DIV2_SHIFT 18 #define CCSR_SSI_SxCCR_DIV2 0x00040000 #define CCSR_SSI_SxCCR_PSR_SHIFT 17 @@ -142,9 +193,10 @@ ((((x) - 1) << CCSR_SSI_SxCCR_PM_SHIFT) & CCSR_SSI_SxCCR_PM_MASK)

/* - * The xFCNT bits are read-only, and the xFWM bits are read/write. Use the - * CCSR_SSI_SFCSR_xFCNTy() macros to read the FIFO counters, and use the - * CCSR_SSI_SFCSR_xFWMy() macros to set the watermarks. + * SSI FIFO Control/Status Register -- CCSR_SSI_SFCSR 0x2c + * + * Tx or Rx FIFO Counter -- CCSR_SSI_SFCSR_xFCNTy Read-Only + * Tx or Rx FIFO Watermarks -- CCSR_SSI_SFCSR_xFWMy Read/Write */ #define CCSR_SSI_SFCSR_RFCNT1_SHIFT 28 #define CCSR_SSI_SFCSR_RFCNT1_MASK 0xF0000000 @@ -179,6 +231,7 @@ #define CCSR_SSI_SFCSR_TFWM0(x) \ (((x) << CCSR_SSI_SFCSR_TFWM0_SHIFT) & CCSR_SSI_SFCSR_TFWM0_MASK)

+/* SSI Test Register -- CCSR_SSI_STR 0x30 */ #define CCSR_SSI_STR_TEST 0x00008000 #define CCSR_SSI_STR_RCK2TCK 0x00004000 #define CCSR_SSI_STR_RFS2TFS 0x00002000 @@ -188,6 +241,7 @@ #define CCSR_SSI_STR_TFS2RFS 0x00000020 #define CCSR_SSI_STR_TXSTATE(x) ((x) & 0x1F)

+/* SSI Option Register -- CCSR_SSI_SOR 0x34 */ #define CCSR_SSI_SOR_CLKOFF 0x00000040 #define CCSR_SSI_SOR_RX_CLR 0x00000020 #define CCSR_SSI_SOR_TX_CLR 0x00000010 @@ -197,6 +251,7 @@ #define CCSR_SSI_SOR_WAIT(x) (((x) & 3) << CCSR_SSI_SOR_WAIT_SHIFT) #define CCSR_SSI_SOR_SYNRST 0x00000001

+/* SSI AC97 Control Register -- CCSR_SSI_SACNT 0x38 */ #define CCSR_SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5) #define CCSR_SSI_SACNT_WR 0x00000010 #define CCSR_SSI_SACNT_RD 0x00000008 diff --git a/sound/soc/fsl/fsl_ssi_dbg.c b/sound/soc/fsl/fsl_ssi_dbg.c index 5469ffb..9c7fa6c 100644 --- a/sound/soc/fsl/fsl_ssi_dbg.c +++ b/sound/soc/fsl/fsl_ssi_dbg.c @@ -82,9 +82,10 @@ void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr) dbg->stats.tfe0++; }

-/* Show the statistics of a flag only if its interrupt is enabled. The - * compiler will optimze this code to a no-op if the interrupt is not - * enabled. +/** + * Show the statistics of a flag only if its interrupt is enabled + * + * Compilers will optimze it to a no-op if the interrupt is disabled */ #define SIER_SHOW(flag, name) \ do { \ @@ -94,10 +95,9 @@ void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr)

/** - * fsl_sysfs_ssi_show: display SSI statistics + * Display the statistics for the current SSI device * - * Display the statistics for the current SSI device. To avoid confusion, - * we only show those counts that are enabled. + * To avoid confusion, only show those counts that are enabled */ static int fsl_ssi_stats_show(struct seq_file *s, void *unused) {

This patch just simply unifies the coding style.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com ---

Changelog v1->v2 * Added two missing indentation changes * Removed two extra blank lines.

sound/soc/fsl/fsl_ssi.c | 239 +++++++++++++++++++++----------------------- sound/soc/fsl/fsl_ssi.h | 2 +- sound/soc/fsl/fsl_ssi_dbg.c | 3 +- 3 files changed, 118 insertions(+), 126 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 8b5407d..9a3db08 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -69,21 +69,35 @@ * samples will be written to STX properly. */ #ifdef __BIG_ENDIAN -#define FSLSSI_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ - SNDRV_PCM_FMTBIT_S18_3BE | SNDRV_PCM_FMTBIT_S20_3BE | \ - SNDRV_PCM_FMTBIT_S24_3BE | SNDRV_PCM_FMTBIT_S24_BE) +#define FSLSSI_I2S_FORMATS \ + (SNDRV_PCM_FMTBIT_S8 | \ + SNDRV_PCM_FMTBIT_S16_BE | \ + SNDRV_PCM_FMTBIT_S18_3BE | \ + SNDRV_PCM_FMTBIT_S20_3BE | \ + SNDRV_PCM_FMTBIT_S24_3BE | \ + SNDRV_PCM_FMTBIT_S24_BE) #else -#define FSLSSI_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \ - SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S20_3LE | \ - SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) +#define FSLSSI_I2S_FORMATS \ + (SNDRV_PCM_FMTBIT_S8 | \ + SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S18_3LE | \ + SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_3LE | \ + SNDRV_PCM_FMTBIT_S24_LE) #endif

-#define FSLSSI_SIER_DBG_RX_FLAGS (SSI_SIER_RFF0_EN | \ - SSI_SIER_RLS_EN | SSI_SIER_RFS_EN | \ - SSI_SIER_ROE0_EN | SSI_SIER_RFRC_EN) -#define FSLSSI_SIER_DBG_TX_FLAGS (SSI_SIER_TFE0_EN | \ - SSI_SIER_TLS_EN | SSI_SIER_TFS_EN | \ - SSI_SIER_TUE0_EN | SSI_SIER_TFRC_EN) +#define FSLSSI_SIER_DBG_RX_FLAGS \ + (SSI_SIER_RFF0_EN | \ + SSI_SIER_RLS_EN | \ + SSI_SIER_RFS_EN | \ + SSI_SIER_ROE0_EN | \ + SSI_SIER_RFRC_EN) +#define FSLSSI_SIER_DBG_TX_FLAGS \ + (SSI_SIER_TFE0_EN | \ + SSI_SIER_TLS_EN | \ + SSI_SIER_TFS_EN | \ + SSI_SIER_TUE0_EN | \ + SSI_SIER_TFRC_EN)

enum fsl_ssi_type { FSL_SSI_MCP8610, @@ -291,8 +305,8 @@ static struct fsl_ssi_soc_data fsl_ssi_mpc8610 = { .imx = false, .offline_config = true, .sisr_write_mask = SSI_SISR_RFRC | SSI_SISR_TFRC | - SSI_SISR_ROE0 | SSI_SISR_ROE1 | - SSI_SISR_TUE0 | SSI_SISR_TUE1, + SSI_SISR_ROE0 | SSI_SISR_ROE1 | + SSI_SISR_TUE0 | SSI_SISR_TUE1, };

static struct fsl_ssi_soc_data fsl_ssi_imx21 = { @@ -306,15 +320,15 @@ static struct fsl_ssi_soc_data fsl_ssi_imx35 = { .imx = true, .offline_config = true, .sisr_write_mask = SSI_SISR_RFRC | SSI_SISR_TFRC | - SSI_SISR_ROE0 | SSI_SISR_ROE1 | - SSI_SISR_TUE0 | SSI_SISR_TUE1, + SSI_SISR_ROE0 | SSI_SISR_ROE1 | + SSI_SISR_TUE0 | SSI_SISR_TUE1, };

static struct fsl_ssi_soc_data fsl_ssi_imx51 = { .imx = true, .offline_config = false, .sisr_write_mask = SSI_SISR_ROE0 | SSI_SISR_ROE1 | - SSI_SISR_TUE0 | SSI_SISR_TUE1, + SSI_SISR_TUE0 | SSI_SISR_TUE1, };

static const struct of_device_id fsl_ssi_ids[] = { @@ -373,21 +387,21 @@ static void fsl_ssi_rxtx_config(struct fsl_ssi *ssi, bool enable)

if (enable) { regmap_update_bits(regs, REG_SSI_SIER, - vals->rx.sier | vals->tx.sier, - vals->rx.sier | vals->tx.sier); + vals->rx.sier | vals->tx.sier, + vals->rx.sier | vals->tx.sier); regmap_update_bits(regs, REG_SSI_SRCR, - vals->rx.srcr | vals->tx.srcr, - vals->rx.srcr | vals->tx.srcr); + vals->rx.srcr | vals->tx.srcr, + vals->rx.srcr | vals->tx.srcr); regmap_update_bits(regs, REG_SSI_STCR, - vals->rx.stcr | vals->tx.stcr, - vals->rx.stcr | vals->tx.stcr); + vals->rx.stcr | vals->tx.stcr, + vals->rx.stcr | vals->tx.stcr); } else { regmap_update_bits(regs, REG_SSI_SRCR, - vals->rx.srcr | vals->tx.srcr, 0); + vals->rx.srcr | vals->tx.srcr, 0); regmap_update_bits(regs, REG_SSI_STCR, - vals->rx.stcr | vals->tx.stcr, 0); + vals->rx.stcr | vals->tx.stcr, 0); regmap_update_bits(regs, REG_SSI_SIER, - vals->rx.sier | vals->tx.sier, 0); + vals->rx.sier | vals->tx.sier, 0); } }

@@ -398,10 +412,10 @@ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) { if (is_rx) { regmap_update_bits(ssi->regs, REG_SSI_SOR, - SSI_SOR_RX_CLR, SSI_SOR_RX_CLR); + SSI_SOR_RX_CLR, SSI_SOR_RX_CLR); } else { regmap_update_bits(ssi->regs, REG_SSI_SOR, - SSI_SOR_TX_CLR, SSI_SOR_TX_CLR); + SSI_SOR_TX_CLR, SSI_SOR_TX_CLR); } }

@@ -429,7 +443,7 @@ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) * Enable or disable SSI configuration. */ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, - struct fsl_ssi_reg_val *vals) + struct fsl_ssi_reg_val *vals) { struct regmap *regs = ssi->regs; struct fsl_ssi_reg_val *avals; @@ -439,8 +453,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable,

regmap_read(regs, REG_SSI_SCR, &scr_val);

- nr_active_streams = !!(scr_val & SSI_SCR_TE) + - !!(scr_val & SSI_SCR_RE); + nr_active_streams = !!(scr_val & SSI_SCR_TE) + !!(scr_val & SSI_SCR_RE);

if (nr_active_streams - 1 > 0) keep_active = 1; @@ -456,7 +469,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, if (!enable) { /* Exclude necessary bits for the opposite stream */ u32 scr = fsl_ssi_disable_val(vals->scr, avals->scr, - keep_active); + keep_active); /* Safely disable SCR register for the stream */ regmap_update_bits(regs, REG_SSI_SCR, scr, 0); } @@ -466,8 +479,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, * Enable or Disable all necessary bits at once */ if (ssi->soc->offline_config) { - if ((enable && !nr_active_streams) || - (!enable && !keep_active)) + if ((enable && !nr_active_streams) || (!enable && !keep_active)) fsl_ssi_rxtx_config(ssi, enable);

goto config_done; @@ -487,11 +499,11 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable,

/* Exclude necessary bits for the opposite stream */ sier = fsl_ssi_disable_val(vals->sier, avals->sier, - keep_active); + keep_active); srcr = fsl_ssi_disable_val(vals->srcr, avals->srcr, - keep_active); + keep_active); stcr = fsl_ssi_disable_val(vals->stcr, avals->stcr, - keep_active); + keep_active);

/* Safely disable other control registers for the stream */ regmap_update_bits(regs, REG_SSI_SRCR, srcr, 0); @@ -510,7 +522,7 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable,

/* Enable SSI first to send TX DMA request */ regmap_update_bits(regs, REG_SSI_SCR, - SSI_SCR_SSIEN, SSI_SCR_SSIEN); + SSI_SCR_SSIEN, SSI_SCR_SSIEN);

/* Wait until TX FIFO not empty -- DMA working */ for (i = 0; i < max_loop; i++) { @@ -529,7 +541,6 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, } }

- static void fsl_ssi_rx_config(struct fsl_ssi *ssi, bool enable) { fsl_ssi_config(ssi, enable, &ssi->rxtx_reg_val.rx); @@ -600,19 +611,16 @@ static void fsl_ssi_setup_ac97(struct fsl_ssi *ssi) struct regmap *regs = ssi->regs;

/* Setup the clock control register */ - regmap_write(regs, REG_SSI_STCCR, - SSI_SxCCR_WL(17) | SSI_SxCCR_DC(13)); - regmap_write(regs, REG_SSI_SRCCR, - SSI_SxCCR_WL(17) | SSI_SxCCR_DC(13)); + regmap_write(regs, REG_SSI_STCCR, SSI_SxCCR_WL(17) | SSI_SxCCR_DC(13)); + regmap_write(regs, REG_SSI_SRCCR, SSI_SxCCR_WL(17) | SSI_SxCCR_DC(13));

/* Enable AC97 mode and startup the SSI */ - regmap_write(regs, REG_SSI_SACNT, - SSI_SACNT_AC97EN | SSI_SACNT_FV); + regmap_write(regs, REG_SSI_SACNT, SSI_SACNT_AC97EN | SSI_SACNT_FV);

/* AC97 has to communicate with codec before starting a stream */ regmap_update_bits(regs, REG_SSI_SCR, - SSI_SCR_SSIEN | SSI_SCR_TE | SSI_SCR_RE, - SSI_SCR_SSIEN | SSI_SCR_TE | SSI_SCR_RE); + SSI_SCR_SSIEN | SSI_SCR_TE | SSI_SCR_RE, + SSI_SCR_SSIEN | SSI_SCR_TE | SSI_SCR_RE);

regmap_write(regs, REG_SSI_SOR, SSI_SOR_WAIT(3)); } @@ -636,19 +644,18 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, */ if (ssi->use_dual_fifo) snd_pcm_hw_constraint_step(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2); + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2);

return 0; }

static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) + struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai);

clk_disable_unprepare(ssi->clk); - }

/** @@ -661,8 +668,8 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, * (In 2-channel I2S Master mode, slot_width is fixed 32) */ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, - struct snd_soc_dai *cpu_dai, - struct snd_pcm_hw_params *hw_params) + struct snd_soc_dai *cpu_dai, + struct snd_pcm_hw_params *hw_params) { struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); struct regmap *regs = ssi->regs; @@ -749,8 +756,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream,

stccr = SSI_SxCCR_PM(pm + 1) | (div2 ? SSI_SxCCR_DIV2 : 0) | (psr ? SSI_SxCCR_PSR : 0); - mask = SSI_SxCCR_PM_MASK | SSI_SxCCR_DIV2 | - SSI_SxCCR_PSR; + mask = SSI_SxCCR_PM_MASK | SSI_SxCCR_DIV2 | SSI_SxCCR_PSR;

if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK || synchronous) regmap_update_bits(regs, REG_SSI_STCCR, mask, stccr); @@ -780,7 +786,8 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, * fsl_ssi_set_bclk() if SSI is the DAI clock master. */ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *cpu_dai) + struct snd_pcm_hw_params *hw_params, + struct snd_soc_dai *cpu_dai) { struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); struct regmap *regs = ssi->regs; @@ -817,36 +824,33 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, u8 i2smode; /* Normal + Network mode to send 16-bit data in 32-bit frames */ if (fsl_ssi_is_i2s_cbm_cfs(ssi) && sample_size == 16) - i2smode = SSI_SCR_I2S_MODE_NORMAL | - SSI_SCR_NET; + i2smode = SSI_SCR_I2S_MODE_NORMAL | SSI_SCR_NET; else i2smode = ssi->i2s_mode;

regmap_update_bits(regs, REG_SSI_SCR, - SSI_SCR_NET | SSI_SCR_I2S_MODE_MASK, - channels == 1 ? 0 : i2smode); + SSI_SCR_NET | SSI_SCR_I2S_MODE_MASK, + channels == 1 ? 0 : i2smode); }

/* In synchronous mode, the SSI uses STCCR for capture */ if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK) || ssi->cpu_dai_drv.symmetric_rates) - regmap_update_bits(regs, REG_SSI_STCCR, SSI_SxCCR_WL_MASK, - wl); + regmap_update_bits(regs, REG_SSI_STCCR, SSI_SxCCR_WL_MASK, wl); else - regmap_update_bits(regs, REG_SSI_SRCCR, SSI_SxCCR_WL_MASK, - wl); + regmap_update_bits(regs, REG_SSI_SRCCR, SSI_SxCCR_WL_MASK, wl);

return 0; }

static int fsl_ssi_hw_free(struct snd_pcm_substream *substream, - struct snd_soc_dai *cpu_dai) + struct snd_soc_dai *cpu_dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai);

if (fsl_ssi_is_i2s_master(ssi) && - ssi->baudclk_streams & BIT(substream->stream)) { + ssi->baudclk_streams & BIT(substream->stream)) { clk_disable_unprepare(ssi->baudclk); ssi->baudclk_streams &= ~BIT(substream->stream); } @@ -876,8 +880,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, scr |= SSI_SCR_SYNC_TX_FS;

mask = SSI_STCR_TXBIT0 | SSI_STCR_TFDIR | SSI_STCR_TXDIR | - SSI_STCR_TSCKP | SSI_STCR_TFSI | SSI_STCR_TFSL | - SSI_STCR_TEFS; + SSI_STCR_TSCKP | SSI_STCR_TFSI | SSI_STCR_TFSL | SSI_STCR_TEFS; regmap_read(regs, REG_SSI_STCR, &stcr); regmap_read(regs, REG_SSI_SRCR, &srcr); stcr &= ~mask; @@ -888,11 +891,9 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: regmap_update_bits(regs, REG_SSI_STCCR, - SSI_SxCCR_DC_MASK, - SSI_SxCCR_DC(2)); + SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(2)); regmap_update_bits(regs, REG_SSI_SRCCR, - SSI_SxCCR_DC_MASK, - SSI_SxCCR_DC(2)); + SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(2)); switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFS: case SND_SOC_DAIFMT_CBS_CFS: @@ -907,7 +908,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev,

/* Data on rising edge of bclk, frame low, 1clk before data */ strcr |= SSI_STCR_TFSI | SSI_STCR_TSCKP | - SSI_STCR_TXBIT0 | SSI_STCR_TEFS; + SSI_STCR_TXBIT0 | SSI_STCR_TEFS; break; case SND_SOC_DAIFMT_LEFT_J: /* Data on rising edge of bclk, frame high */ @@ -916,12 +917,11 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, case SND_SOC_DAIFMT_DSP_A: /* Data on rising edge of bclk, frame high, 1clk before data */ strcr |= SSI_STCR_TFSL | SSI_STCR_TSCKP | - SSI_STCR_TXBIT0 | SSI_STCR_TEFS; + SSI_STCR_TXBIT0 | SSI_STCR_TEFS; break; case SND_SOC_DAIFMT_DSP_B: /* Data on rising edge of bclk, frame high */ - strcr |= SSI_STCR_TFSL | SSI_STCR_TSCKP | - SSI_STCR_TXBIT0; + strcr |= SSI_STCR_TFSL | SSI_STCR_TSCKP | SSI_STCR_TXBIT0; break; case SND_SOC_DAIFMT_AC97: /* Data on falling edge of bclk, frame high, 1clk before data */ @@ -992,23 +992,22 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, wm = ssi->fifo_watermark;

regmap_write(regs, REG_SSI_SFCSR, - SSI_SFCSR_TFWM0(wm) | SSI_SFCSR_RFWM0(wm) | - SSI_SFCSR_TFWM1(wm) | SSI_SFCSR_RFWM1(wm)); + SSI_SFCSR_TFWM0(wm) | SSI_SFCSR_RFWM0(wm) | + SSI_SFCSR_TFWM1(wm) | SSI_SFCSR_RFWM1(wm));

if (ssi->use_dual_fifo) { - regmap_update_bits(regs, REG_SSI_SRCR, SSI_SRCR_RFEN1, - SSI_SRCR_RFEN1); - regmap_update_bits(regs, REG_SSI_STCR, SSI_STCR_TFEN1, - SSI_STCR_TFEN1); - regmap_update_bits(regs, REG_SSI_SCR, SSI_SCR_TCH_EN, - SSI_SCR_TCH_EN); + regmap_update_bits(regs, REG_SSI_SRCR, + SSI_SRCR_RFEN1, SSI_SRCR_RFEN1); + regmap_update_bits(regs, REG_SSI_STCR, + SSI_STCR_TFEN1, SSI_STCR_TFEN1); + regmap_update_bits(regs, REG_SSI_SCR, + SSI_SCR_TCH_EN, SSI_SCR_TCH_EN); }

if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_AC97) fsl_ssi_setup_ac97(ssi);

return 0; - }

/** @@ -1029,7 +1028,7 @@ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) * Set TDM slot number and slot width */ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, - u32 rx_mask, int slots, int slot_width) + u32 rx_mask, int slots, int slot_width) { struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); struct regmap *regs = ssi->regs; @@ -1049,17 +1048,16 @@ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, return -EINVAL; }

- regmap_update_bits(regs, REG_SSI_STCCR, SSI_SxCCR_DC_MASK, - SSI_SxCCR_DC(slots)); - regmap_update_bits(regs, REG_SSI_SRCCR, SSI_SxCCR_DC_MASK, - SSI_SxCCR_DC(slots)); + regmap_update_bits(regs, REG_SSI_STCCR, + SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(slots)); + regmap_update_bits(regs, REG_SSI_SRCCR, + SSI_SxCCR_DC_MASK, SSI_SxCCR_DC(slots));

/* Save SSIEN bit of the SCR register */ regmap_read(regs, REG_SSI_SCR, &val); val &= SSI_SCR_SSIEN; /* Temporarily enable SSI to allow SxMSKs to be configurable */ - regmap_update_bits(regs, REG_SSI_SCR, SSI_SCR_SSIEN, - SSI_SCR_SSIEN); + regmap_update_bits(regs, REG_SSI_SCR, SSI_SCR_SSIEN, SSI_SCR_SSIEN);

regmap_write(regs, REG_SSI_STMSK, ~tx_mask); regmap_write(regs, REG_SSI_SRMSK, ~rx_mask); @@ -1130,13 +1128,13 @@ static int fsl_ssi_dai_probe(struct snd_soc_dai *dai) }

static const struct snd_soc_dai_ops fsl_ssi_dai_ops = { - .startup = fsl_ssi_startup, - .shutdown = fsl_ssi_shutdown, - .hw_params = fsl_ssi_hw_params, - .hw_free = fsl_ssi_hw_free, - .set_fmt = fsl_ssi_set_dai_fmt, - .set_tdm_slot = fsl_ssi_set_dai_tdm_slot, - .trigger = fsl_ssi_trigger, + .startup = fsl_ssi_startup, + .shutdown = fsl_ssi_shutdown, + .hw_params = fsl_ssi_hw_params, + .hw_free = fsl_ssi_hw_free, + .set_fmt = fsl_ssi_set_dai_fmt, + .set_tdm_slot = fsl_ssi_set_dai_tdm_slot, + .trigger = fsl_ssi_trigger, };

static struct snd_soc_dai_driver fsl_ssi_dai_template = { @@ -1159,7 +1157,7 @@ static struct snd_soc_dai_driver fsl_ssi_dai_template = { };

static const struct snd_soc_component_driver fsl_ssi_component = { - .name = "fsl-ssi", + .name = "fsl-ssi", };

static struct snd_soc_dai_driver fsl_ssi_ac97_dai = { @@ -1183,11 +1181,10 @@ static struct snd_soc_dai_driver fsl_ssi_ac97_dai = { .ops = &fsl_ssi_dai_ops, };

- static struct fsl_ssi *fsl_ac97_data;

static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, - unsigned short val) + unsigned short val) { struct regmap *regs = fsl_ac97_data->regs; unsigned int lreg; @@ -1212,8 +1209,8 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, lval = val << 4; regmap_write(regs, REG_SSI_SACDAT, lval);

- regmap_update_bits(regs, REG_SSI_SACNT, SSI_SACNT_RDWR_MASK, - SSI_SACNT_WR); + regmap_update_bits(regs, REG_SSI_SACNT, + SSI_SACNT_RDWR_MASK, SSI_SACNT_WR); udelay(100);

clk_disable_unprepare(fsl_ac97_data->clk); @@ -1223,10 +1220,9 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, }

static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97, - unsigned short reg) + unsigned short reg) { struct regmap *regs = fsl_ac97_data->regs; - unsigned short val = 0; u32 reg_val; unsigned int lreg; @@ -1236,15 +1232,14 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,

ret = clk_prepare_enable(fsl_ac97_data->clk); if (ret) { - pr_err("ac97 read clk_prepare_enable failed: %d\n", - ret); + pr_err("ac97 read clk_prepare_enable failed: %d\n", ret); goto ret_unlock; }

lreg = (reg & 0x7f) << 12; regmap_write(regs, REG_SSI_SACADD, lreg); - regmap_update_bits(regs, REG_SSI_SACNT, SSI_SACNT_RDWR_MASK, - SSI_SACNT_RD); + regmap_update_bits(regs, REG_SSI_SACNT, + SSI_SACNT_RDWR_MASK, SSI_SACNT_RD);

udelay(100);

@@ -1259,8 +1254,8 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97, }

static struct snd_ac97_bus_ops fsl_ssi_ac97_ops = { - .read = fsl_ssi_ac97_read, - .write = fsl_ssi_ac97_write, + .read = fsl_ssi_ac97_read, + .write = fsl_ssi_ac97_write, };

/** @@ -1275,7 +1270,7 @@ static void make_lowercase(char *s) }

static int fsl_ssi_imx_probe(struct platform_device *pdev, - struct fsl_ssi *ssi, void __iomem *iomem) + struct fsl_ssi *ssi, void __iomem *iomem) { struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; @@ -1344,14 +1339,13 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, return 0;

error_pcm: - if (!ssi->has_ipg_clk_name) clk_disable_unprepare(ssi->clk); + return ret; }

-static void fsl_ssi_imx_clean(struct platform_device *pdev, - struct fsl_ssi *ssi) +static void fsl_ssi_imx_clean(struct platform_device *pdev, struct fsl_ssi *ssi) { if (!ssi->use_dma) imx_pcm_fiq_exit(pdev); @@ -1396,8 +1390,7 @@ static int fsl_ssi_probe(struct platform_device *pdev)

if (fsl_ssi_is_ac97(ssi)) { memcpy(&ssi->cpu_dai_drv, &fsl_ssi_ac97_dai, - sizeof(fsl_ssi_ac97_dai)); - + sizeof(fsl_ssi_ac97_dai)); fsl_ac97_data = ssi; } else { memcpy(&ssi->cpu_dai_drv, &fsl_ssi_dai_template, @@ -1549,8 +1542,8 @@ static int fsl_ssi_probe(struct platform_device *pdev) goto error_sound_card; }

- ssi->pdev = platform_device_register_data(NULL, - "ac97-codec", ssi_idx, NULL, 0); + ssi->pdev = platform_device_register_data(NULL, "ac97-codec", + ssi_idx, NULL, 0); if (IS_ERR(ssi->pdev)) { ret = PTR_ERR(ssi->pdev); dev_err(dev, @@ -1564,11 +1557,9 @@ static int fsl_ssi_probe(struct platform_device *pdev)

error_sound_card: fsl_ssi_debugfs_remove(&ssi->dbg_stats); - error_asoc_register: if (fsl_ssi_is_ac97(ssi)) snd_soc_set_ac97_ops(NULL); - error_ac97_ops: if (fsl_ssi_is_ac97(ssi)) mutex_destroy(&ssi->ac97_reg_lock); @@ -1622,9 +1613,9 @@ static int fsl_ssi_resume(struct device *dev) regcache_cache_only(regs, false);

regmap_update_bits(regs, REG_SSI_SFCSR, - SSI_SFCSR_RFWM1_MASK | SSI_SFCSR_TFWM1_MASK | - SSI_SFCSR_RFWM0_MASK | SSI_SFCSR_TFWM0_MASK, - ssi->regcache_sfcsr); + SSI_SFCSR_RFWM1_MASK | SSI_SFCSR_TFWM1_MASK | + SSI_SFCSR_RFWM0_MASK | SSI_SFCSR_TFWM0_MASK, + ssi->regcache_sfcsr); regmap_write(regs, REG_SSI_SACNT, ssi->regcache_sacnt);

return regcache_sync(regs); diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index cdcf3d2..fe38e69 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -310,7 +310,7 @@ static inline void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *stats, u32 sisr) }

static inline int fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, - struct device *dev) + struct device *dev) { return 0; } diff --git a/sound/soc/fsl/fsl_ssi_dbg.c b/sound/soc/fsl/fsl_ssi_dbg.c index 50b0cab..0dc71df 100644 --- a/sound/soc/fsl/fsl_ssi_dbg.c +++ b/sound/soc/fsl/fsl_ssi_dbg.c @@ -147,7 +147,8 @@ int fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev) return -ENOMEM;

ssi_dbg->dbg_stats = debugfs_create_file("stats", S_IRUGO, - ssi_dbg->dbg_dir, ssi_dbg, &fsl_ssi_stats_ops); + ssi_dbg->dbg_dir, ssi_dbg, + &fsl_ssi_stats_ops); if (!ssi_dbg->dbg_stats) { debugfs_remove(ssi_dbg->dbg_dir); return -ENOMEM;

Shortens the variable name to save space, useful for dev_err outputs.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index d3bb662..69fa86d 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -668,10 +668,10 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, * (In 2-channel I2S Master mode, slot_width is fixed 32) */ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, - struct snd_soc_dai *cpu_dai, + struct snd_soc_dai *dai, struct snd_pcm_hw_params *hw_params) { - struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); struct regmap *regs = ssi->regs; int synchronous = ssi->cpu_dai_drv.symmetric_rates, ret; u32 pm = 999, div2, psr, stccr, mask, afreq, factor, i; @@ -701,7 +701,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, * never greater than 1/5 IPG clock rate */ if (freq * 5 > clk_get_rate(ssi->clk)) { - dev_err(cpu_dai->dev, "bitclk > ipgclk / 5\n"); + dev_err(dai->dev, "bitclk > ipgclk / 5\n"); return -EINVAL; }

@@ -750,7 +750,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream,

/* No proper pm found if it is still remaining the initial value */ if (pm == 999) { - dev_err(cpu_dai->dev, "failed to handle the required sysclk\n"); + dev_err(dai->dev, "failed to handle the required sysclk\n"); return -EINVAL; }

@@ -766,7 +766,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, if (!baudclk_is_used) { ret = clk_set_rate(ssi->baudclk, baudrate); if (ret) { - dev_err(cpu_dai->dev, "failed to set baudclk rate\n"); + dev_err(dai->dev, "failed to set baudclk rate\n"); return -EINVAL; } } @@ -787,9 +787,9 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, */ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params, - struct snd_soc_dai *cpu_dai) + struct snd_soc_dai *dai) { - struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); struct regmap *regs = ssi->regs; unsigned int channels = params_channels(hw_params); unsigned int sample_size = params_width(hw_params); @@ -806,7 +806,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, return 0;

if (fsl_ssi_is_i2s_master(ssi)) { - ret = fsl_ssi_set_bclk(substream, cpu_dai, hw_params); + ret = fsl_ssi_set_bclk(substream, dai, hw_params); if (ret) return ret;

@@ -844,7 +844,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, }

static int fsl_ssi_hw_free(struct snd_pcm_substream *substream, - struct snd_soc_dai *cpu_dai) + struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(rtd->cpu_dai); @@ -1013,30 +1013,30 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, /** * Configure Digital Audio Interface (DAI) Format */ -static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) +static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { - struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai);

/* AC97 configured DAIFMT earlier in the probe() */ if (fsl_ssi_is_ac97(ssi)) return 0;

- return _fsl_ssi_set_dai_fmt(cpu_dai->dev, ssi, fmt); + return _fsl_ssi_set_dai_fmt(dai->dev, ssi, fmt); }

/** * Set TDM slot number and slot width */ -static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, +static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask, u32 rx_mask, int slots, int slot_width) { - struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); + struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); struct regmap *regs = ssi->regs; u32 val;

/* The word length should be 8, 10, 12, 16, 18, 20, 22 or 24 */ if (slot_width & 1 || slot_width < 8 || slot_width > 24) { - dev_err(cpu_dai->dev, "invalid slot width: %d\n", slot_width); + dev_err(dai->dev, "invalid slot width: %d\n", slot_width); return -EINVAL; }

@@ -1044,7 +1044,7 @@ static int fsl_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, regmap_read(regs, REG_SSI_SCR, &val); val &= SSI_SCR_I2S_MODE_MASK | SSI_SCR_NET; if (val && slots < 2) { - dev_err(cpu_dai->dev, "slot number should be >= 2 in I2S or NET\n"); + dev_err(dai->dev, "slot number should be >= 2 in I2S or NET\n"); return -EINVAL; }

Simplify the variable name. This reduces one over-80-character line.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 69fa86d..7fcc6bd 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -448,12 +448,12 @@ static void fsl_ssi_config(struct fsl_ssi *ssi, bool enable, struct regmap *regs = ssi->regs; struct fsl_ssi_reg_val *avals; int nr_active_streams; - u32 scr_val; + u32 scr; int keep_active;

- regmap_read(regs, REG_SSI_SCR, &scr_val); + regmap_read(regs, REG_SSI_SCR, &scr);

- nr_active_streams = !!(scr_val & SSI_SCR_TE) + !!(scr_val & SSI_SCR_RE); + nr_active_streams = !!(scr & SSI_SCR_TE) + !!(scr & SSI_SCR_RE);

if (nr_active_streams - 1 > 0) keep_active = 1; @@ -795,11 +795,11 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, unsigned int sample_size = params_width(hw_params); u32 wl = SSI_SxCCR_WL(sample_size); int ret; - u32 scr_val; + u32 scr; int enabled;

- regmap_read(regs, REG_SSI_SCR, &scr_val); - enabled = scr_val & SSI_SCR_SSIEN; + regmap_read(regs, REG_SSI_SCR, &scr); + enabled = scr & SSI_SCR_SSIEN;

/* To support simultaneous TX and RX, bypass it if SSI is enabled */ if (enabled && ssi->cpu_dai_drv.symmetric_rates)

Since this i2smode also includes the setting of Network mode, it should have it in the name. This patch also adds its MASK define.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 24 ++++++++++++------------ sound/soc/fsl/fsl_ssi.h | 1 + 2 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 7a8a768..dd091eb 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -201,7 +201,7 @@ struct fsl_ssi_soc_data { * @cpu_dai_drv: CPU DAI driver for this device * * @dai_fmt: DAI configuration this device is currently used with - * @i2s_mode: I2S and Network mode configuration of SCR register + * @i2s_net: I2S and Network mode configurations of SCR register * @use_dma: DMA is used or FIQ with stream filter * @use_dual_fifo: DMA with support for dual FIFO mode * @has_ipg_clk_name: If "ipg" is in the clock name list of device tree @@ -245,7 +245,7 @@ struct fsl_ssi { struct snd_soc_dai_driver cpu_dai_drv;

unsigned int dai_fmt; - u8 i2s_mode; + u8 i2s_net; bool use_dma; bool use_dual_fifo; bool has_ipg_clk_name; @@ -816,16 +816,16 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, }

if (!fsl_ssi_is_ac97(ssi)) { - u8 i2smode; + u8 i2s_net; /* Normal + Network mode to send 16-bit data in 32-bit frames */ if (fsl_ssi_is_i2s_cbm_cfs(ssi) && sample_size == 16) - i2smode = SSI_SCR_I2S_MODE_NORMAL | SSI_SCR_NET; + i2s_net = SSI_SCR_I2S_MODE_NORMAL | SSI_SCR_NET; else - i2smode = ssi->i2s_mode; + i2s_net = ssi->i2s_net;

regmap_update_bits(regs, REG_SSI_SCR, - SSI_SCR_NET | SSI_SCR_I2S_MODE_MASK, - channels == 1 ? 0 : i2smode); + SSI_SCR_I2S_NET_MASK, + channels == 1 ? 0 : i2s_net); }

/* In synchronous mode, the SSI uses STCCR for capture */ @@ -882,7 +882,7 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, srcr &= ~mask;

/* Use Network mode as default */ - ssi->i2s_mode = SSI_SCR_NET; + ssi->i2s_net = SSI_SCR_NET; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: regmap_update_bits(regs, REG_SSI_STCCR, @@ -892,10 +892,10 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFS: case SND_SOC_DAIFMT_CBS_CFS: - ssi->i2s_mode |= SSI_SCR_I2S_MODE_MASTER; + ssi->i2s_net |= SSI_SCR_I2S_MODE_MASTER; break; case SND_SOC_DAIFMT_CBM_CFM: - ssi->i2s_mode |= SSI_SCR_I2S_MODE_SLAVE; + ssi->i2s_net |= SSI_SCR_I2S_MODE_SLAVE; break; default: return -EINVAL; @@ -920,12 +920,12 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, break; case SND_SOC_DAIFMT_AC97: /* Data on falling edge of bclk, frame high, 1clk before data */ - ssi->i2s_mode |= SSI_SCR_I2S_MODE_NORMAL; + ssi->i2s_net |= SSI_SCR_I2S_MODE_NORMAL; break; default: return -EINVAL; } - scr |= ssi->i2s_mode; + scr |= ssi->i2s_net;

/* DAI clock inversion */ switch (fmt & SND_SOC_DAIFMT_INV_MASK) { diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 52b88f1..b610087 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -95,6 +95,7 @@ #define SSI_SCR_I2S_MODE_SLAVE 0x00000040 #define SSI_SCR_SYN 0x00000010 #define SSI_SCR_NET 0x00000008 +#define SSI_SCR_I2S_NET_MASK (SSI_SCR_NET | SSI_SCR_I2S_MODE_MASK) #define SSI_SCR_RE 0x00000004 #define SSI_SCR_TE 0x00000002 #define SSI_SCR_SSIEN 0x00000001

Some regmap code looks redudant. So simplify it.

Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 27 +++++++++++---------------- sound/soc/fsl/fsl_ssi.h | 4 ++++ 2 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index dd091eb..5b4fa43 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -405,13 +405,10 @@ static void fsl_ssi_rxtx_config(struct fsl_ssi *ssi, bool enable) */ static void fsl_ssi_fifo_clear(struct fsl_ssi *ssi, bool is_rx) { - if (is_rx) { - regmap_update_bits(ssi->regs, REG_SSI_SOR, - SSI_SOR_RX_CLR, SSI_SOR_RX_CLR); - } else { - regmap_update_bits(ssi->regs, REG_SSI_SOR, - SSI_SOR_TX_CLR, SSI_SOR_TX_CLR); - } + bool tx = !is_rx; + + regmap_update_bits(ssi->regs, REG_SSI_SOR, + SSI_SOR_xX_CLR(tx), SSI_SOR_xX_CLR(tx)); }

/** @@ -666,6 +663,7 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, struct snd_soc_dai *dai, struct snd_pcm_hw_params *hw_params) { + bool tx2, tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); struct regmap *regs = ssi->regs; int synchronous = ssi->cpu_dai_drv.symmetric_rates, ret; @@ -753,10 +751,9 @@ static int fsl_ssi_set_bclk(struct snd_pcm_substream *substream, (psr ? SSI_SxCCR_PSR : 0); mask = SSI_SxCCR_PM_MASK | SSI_SxCCR_DIV2 | SSI_SxCCR_PSR;

- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK || synchronous) - regmap_update_bits(regs, REG_SSI_STCCR, mask, stccr); - else - regmap_update_bits(regs, REG_SSI_SRCCR, mask, stccr); + /* STCCR is used for RX in synchronous mode */ + tx2 = tx || synchronous; + regmap_update_bits(regs, REG_SSI_SxCCR(tx2), mask, stccr);

if (!baudclk_is_used) { ret = clk_set_rate(ssi->baudclk, baudrate); @@ -784,6 +781,7 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai) { + bool tx2, tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); struct regmap *regs = ssi->regs; unsigned int channels = params_channels(hw_params); @@ -829,11 +827,8 @@ static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, }

/* In synchronous mode, the SSI uses STCCR for capture */ - if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK) || - ssi->cpu_dai_drv.symmetric_rates) - regmap_update_bits(regs, REG_SSI_STCCR, SSI_SxCCR_WL_MASK, wl); - else - regmap_update_bits(regs, REG_SSI_SRCCR, SSI_SxCCR_WL_MASK, wl); + tx2 = tx || ssi->cpu_dai_drv.symmetric_rates; + regmap_update_bits(regs, REG_SSI_SxCCR(tx2), SSI_SxCCR_WL_MASK, wl);

return 0; } diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index b610087..de2fdc5 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -35,10 +35,12 @@ #define REG_SSI_STCR 0x1c /* SSI Receive Configuration Register */ #define REG_SSI_SRCR 0x20 +#define REG_SSI_SxCR(tx) ((tx) ? REG_SSI_STCR : REG_SSI_SRCR) /* SSI Transmit Clock Control Register */ #define REG_SSI_STCCR 0x24 /* SSI Receive Clock Control Register */ #define REG_SSI_SRCCR 0x28 +#define REG_SSI_SxCCR(tx) ((tx) ? REG_SSI_STCCR : REG_SSI_SRCCR) /* SSI FIFO Control/Status Register */ #define REG_SSI_SFCSR 0x2c /* @@ -67,6 +69,7 @@ #define REG_SSI_STMSK 0x48 /* SSI Receive Time Slot Mask Register */ #define REG_SSI_SRMSK 0x4c +#define REG_SSI_SxMSK(tx) ((tx) ? REG_SSI_STMSK : REG_SSI_SRMSK) /* * SSI AC97 Channel Status Register * @@ -249,6 +252,7 @@ #define SSI_SOR_CLKOFF 0x00000040 #define SSI_SOR_RX_CLR 0x00000020 #define SSI_SOR_TX_CLR 0x00000010 +#define SSI_SOR_xX_CLR(tx) ((tx) ? SSI_SOR_TX_CLR : SSI_SOR_RX_CLR) #define SSI_SOR_INIT 0x00000008 #define SSI_SOR_WAIT_SHIFT 1 #define SSI_SOR_WAIT_MASK 0x00000006