--- /dev/null
+/*
+ * Freescale ESAI ALSA SoC Digital Audio Interface (DAI) driver
+ *
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/dmaengine.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm_params.h>
+
+#include "fsl_esai.h"
+#include "imx-pcm.h"
+
+#define FSL_ESAI_RATES SNDRV_PCM_RATE_8000_192000
+#define FSL_ESAI_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+/**
+ * fsl_esai: ESAI private data
+ *
+ * @dma_params_rx: DMA parameters for receive channel
+ * @dma_params_tx: DMA parameters for transmit channel
+ * @pdev: platform device pointer
+ * @regmap: regmap handler
+ * @coreclk: clock source to access register
+ * @extalclk: esai clock source to derive HCK, SCK and FS
+ * @fsysclk: system clock source to derive HCK, SCK and FS
+ * @fifo_depth: depth of tx/rx FIFO
+ * @slot_width: width of each DAI slot
+ * @hck_rate: clock rate of desired HCKx clock
+ * @sck_div: if using PSR/PM dividers for SCKx clock
+ * @slave_mode: if fully using DAI slave mode
+ * @synchronous: if using tx/rx synchronous mode
+ * @name: driver name
+ */
+struct fsl_esai {
+ struct snd_dmaengine_dai_dma_data dma_params_rx;
+ struct snd_dmaengine_dai_dma_data dma_params_tx;
+ struct platform_device *pdev;
+ struct regmap *regmap;
+ struct clk *coreclk;
+ struct clk *extalclk;
+ struct clk *fsysclk;
+ u32 fifo_depth;
+ u32 slot_width;
+ u32 hck_rate[2];
+ bool sck_div[2];
+ bool slave_mode;
+ bool synchronous;
+ char name[32];
+};
+
+static irqreturn_t esai_isr(int irq, void *devid)
+{
+ struct fsl_esai *esai_priv = (struct fsl_esai *)devid;
+ struct platform_device *pdev = esai_priv->pdev;
+ u32 esr;
+
+ regmap_read(esai_priv->regmap, REG_ESAI_ESR, &esr);
+
+ if (esr & ESAI_ESR_TINIT_MASK)
+ dev_dbg(&pdev->dev, "isr: Transmition Initialized\n");
+
+ if (esr & ESAI_ESR_RFF_MASK)
+ dev_warn(&pdev->dev, "isr: Receiving overrun\n");
+
+ if (esr & ESAI_ESR_TFE_MASK)
+ dev_warn(&pdev->dev, "isr: Transmition underrun\n");
+
+ if (esr & ESAI_ESR_TLS_MASK)
+ dev_dbg(&pdev->dev, "isr: Just transmitted the last slot\n");
+
+ if (esr & ESAI_ESR_TDE_MASK)
+ dev_dbg(&pdev->dev, "isr: Transmition data exception\n");
+
+ if (esr & ESAI_ESR_TED_MASK)
+ dev_dbg(&pdev->dev, "isr: Transmitting even slots\n");
+
+ if (esr & ESAI_ESR_TD_MASK)
+ dev_dbg(&pdev->dev, "isr: Transmitting data\n");
+
+ if (esr & ESAI_ESR_RLS_MASK)
+ dev_dbg(&pdev->dev, "isr: Just received the last slot\n");
+
+ if (esr & ESAI_ESR_RDE_MASK)
+ dev_dbg(&pdev->dev, "isr: Receiving data exception\n");
+
+ if (esr & ESAI_ESR_RED_MASK)
+ dev_dbg(&pdev->dev, "isr: Receiving even slots\n");
+
+ if (esr & ESAI_ESR_RD_MASK)
+ dev_dbg(&pdev->dev, "isr: Receiving data\n");
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * This function is used to calculate the divisors of psr, pm, fp and it is
+ * supposed to be called in set_dai_sysclk() and set_bclk().
+ *
+ * @ratio: desired overall ratio for the paticipating dividers
+ * @usefp: for HCK setting, there is no need to set fp divider
+ * @fp: bypass other dividers by setting fp directly if fp != 0
+ * @tx: current setting is for playback or capture
+ */
+static int fsl_esai_divisor_cal(struct snd_soc_dai *dai, bool tx, u32 ratio,
+ bool usefp, u32 fp)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ u32 psr, pm = 999, maxfp, prod, sub, savesub, i, j;
+
+ maxfp = usefp ? 16 : 1;
+
+ if (usefp && fp)
+ goto out_fp;
+
+ if (ratio > 2 * 8 * 256 * maxfp || ratio < 2) {
+ dev_err(dai->dev, "the ratio is out of range (2 ~ %d)\n",
+ 2 * 8 * 256 * maxfp);
+ return -EINVAL;
+ } else if (ratio % 2) {
+ dev_err(dai->dev, "the raio must be even if using upper divider\n");
+ return -EINVAL;
+ }
+
+ ratio /= 2;
+
+ psr = ratio <= 256 * maxfp ? ESAI_xCCR_xPSR_BYPASS : ESAI_xCCR_xPSR_DIV8;
+
+ /* Set the max fluctuation -- 0.1% of the max devisor */
+ savesub = (psr ? 1 : 8) * 256 * maxfp / 1000;
+
+ /* Find the best value for PM */
+ for (i = 1; i <= 256; i++) {
+ for (j = 1; j <= maxfp; j++) {
+ /* PSR (1 or 8) * PM (1 ~ 256) * FP (1 ~ 16) */
+ prod = (psr ? 1 : 8) * i * j;
+
+ if (prod == ratio)
+ sub = 0;
+ else if (prod / ratio == 1)
+ sub = prod - ratio;
+ else if (ratio / prod == 1)
+ sub = ratio - prod;
+ else
+ continue;
+
+ /* Calculate the fraction */
+ sub = sub * 1000 / ratio;
+ if (sub < savesub) {
+ savesub = sub;
+ pm = i;
+ fp = j;
+ }
+
+ /* We are lucky */
+ if (savesub == 0)
+ goto out;
+ }
+ }
+
+ if (pm == 999) {
+ dev_err(dai->dev, "failed to calculate proper divisors\n");
+ return -EINVAL;
+ }
+
+out:
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCCR(tx),
+ ESAI_xCCR_xPSR_MASK | ESAI_xCCR_xPM_MASK,
+ psr | ESAI_xCCR_xPM(pm));
+
+out_fp:
+ /* Bypass fp if not being required */
+ if (maxfp <= 1)
+ return 0;
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCCR(tx),
+ ESAI_xCCR_xFP_MASK, ESAI_xCCR_xFP(fp));
+
+ return 0;
+}
+
+/**
+ * This function mainly configures the clock frequency of MCLK (HCKT/HCKR)
+ *
+ * @Parameters:
+ * clk_id: The clock source of HCKT/HCKR
+ * (Input from outside; output from inside, FSYS or EXTAL)
+ * freq: The required clock rate of HCKT/HCKR
+ * dir: The clock direction of HCKT/HCKR
+ *
+ * Note: If the direction is input, we do not care about clk_id.
+ */
+static int fsl_esai_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ struct clk *clksrc = esai_priv->extalclk;
+ bool tx = clk_id <= ESAI_HCKT_EXTAL;
+ bool in = dir == SND_SOC_CLOCK_IN;
+ u32 ret, ratio, ecr = 0;
+ unsigned long clk_rate;
+
+ /* sck_div can be only bypassed if ETO/ERO=0 and SNC_SOC_CLOCK_OUT */
+ esai_priv->sck_div[tx] = true;
+
+ /* Set the direction of HCKT/HCKR pins */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCCR(tx),
+ ESAI_xCCR_xHCKD, in ? 0 : ESAI_xCCR_xHCKD);
+
+ if (in)
+ goto out;
+
+ switch (clk_id) {
+ case ESAI_HCKT_FSYS:
+ case ESAI_HCKR_FSYS:
+ clksrc = esai_priv->fsysclk;
+ break;
+ case ESAI_HCKT_EXTAL:
+ ecr |= ESAI_ECR_ETI;
+ case ESAI_HCKR_EXTAL:
+ ecr |= ESAI_ECR_ERI;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (IS_ERR(clksrc)) {
+ dev_err(dai->dev, "no assigned %s clock\n",
+ clk_id % 2 ? "extal" : "fsys");
+ return PTR_ERR(clksrc);
+ }
+ clk_rate = clk_get_rate(clksrc);
+
+ ratio = clk_rate / freq;
+ if (ratio * freq > clk_rate)
+ ret = ratio * freq - clk_rate;
+ else if (ratio * freq < clk_rate)
+ ret = clk_rate - ratio * freq;
+ else
+ ret = 0;
+
+ /* Block if clock source can not be divided into the required rate */
+ if (ret != 0 && clk_rate / ret < 1000) {
+ dev_err(dai->dev, "failed to derive required HCK%c rate\n",
+ tx ? 'T' : 'R');
+ return -EINVAL;
+ }
+
+ if (ratio == 1) {
+ /* Bypass all the dividers if not being needed */
+ ecr |= tx ? ESAI_ECR_ETO : ESAI_ECR_ERO;
+ goto out;
+ }
+
+ ret = fsl_esai_divisor_cal(dai, tx, ratio, false, 0);
+ if (ret)
+ return ret;
+
+ esai_priv->sck_div[tx] = false;
+
+out:
+ esai_priv->hck_rate[tx] = freq;
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_ECR,
+ tx ? ESAI_ECR_ETI | ESAI_ECR_ETO :
+ ESAI_ECR_ERI | ESAI_ECR_ERO, ecr);
+
+ return 0;
+}
+
+/**
+ * This function configures the related dividers according to the bclk rate
+ */
+static int fsl_esai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ u32 hck_rate = esai_priv->hck_rate[tx];
+ u32 sub, ratio = hck_rate / freq;
+
+ /* Don't apply for fully slave mode*/
+ if (esai_priv->slave_mode)
+ return 0;
+
+ if (ratio * freq > hck_rate)
+ sub = ratio * freq - hck_rate;
+ else if (ratio * freq < hck_rate)
+ sub = hck_rate - ratio * freq;
+ else
+ sub = 0;
+
+ /* Block if clock source can not be divided into the required rate */
+ if (sub != 0 && hck_rate / sub < 1000) {
+ dev_err(dai->dev, "failed to derive required SCK%c rate\n",
+ tx ? 'T' : 'R');
+ return -EINVAL;
+ }
+
+ if (esai_priv->sck_div[tx] && (ratio > 16 || ratio == 0)) {
+ dev_err(dai->dev, "the ratio is out of range (1 ~ 16)\n");
+ return -EINVAL;
+ }
+
+ return fsl_esai_divisor_cal(dai, tx, ratio, true,
+ esai_priv->sck_div[tx] ? 0 : ratio);
+}
+
+static int fsl_esai_set_dai_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask,
+ u32 rx_mask, int slots, int slot_width)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TCCR,
+ ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(slots));
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TSMA,
+ ESAI_xSMA_xS_MASK, ESAI_xSMA_xS(tx_mask));
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TSMB,
+ ESAI_xSMA_xS_MASK, ESAI_xSMB_xS(tx_mask));
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RCCR,
+ ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(slots));
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RSMA,
+ ESAI_xSMA_xS_MASK, ESAI_xSMA_xS(rx_mask));
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RSMB,
+ ESAI_xSMA_xS_MASK, ESAI_xSMB_xS(rx_mask));
+
+ esai_priv->slot_width = slot_width;
+
+ return 0;
+}
+
+static int fsl_esai_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ u32 xcr = 0, xccr = 0, mask;
+
+ /* DAI mode */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ /* Data on rising edge of bclk, frame low, 1clk before data */
+ xcr |= ESAI_xCR_xFSR;
+ xccr |= ESAI_xCCR_xFSP | ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ /* Data on rising edge of bclk, frame high */
+ xccr |= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ /* Data on rising edge of bclk, frame high, right aligned */
+ xccr |= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP | ESAI_xCR_xWA;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ /* Data on rising edge of bclk, frame high, 1clk before data */
+ xcr |= ESAI_xCR_xFSL | ESAI_xCR_xFSR;
+ xccr |= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ /* Data on rising edge of bclk, frame high */
+ xcr |= ESAI_xCR_xFSL;
+ xccr |= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* DAI clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ /* Nothing to do for both normal cases */
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ /* Invert bit clock */
+ xccr ^= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ /* Invert frame clock */
+ xccr ^= ESAI_xCCR_xFSP;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ /* Invert both clocks */
+ xccr ^= ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP | ESAI_xCCR_xFSP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ esai_priv->slave_mode = false;
+
+ /* DAI clock master masks */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ esai_priv->slave_mode = true;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM:
+ xccr |= ESAI_xCCR_xCKD;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS:
+ xccr |= ESAI_xCCR_xFSD;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ xccr |= ESAI_xCCR_xFSD | ESAI_xCCR_xCKD;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mask = ESAI_xCR_xFSL | ESAI_xCR_xFSR;
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TCR, mask, xcr);
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RCR, mask, xcr);
+
+ mask = ESAI_xCCR_xCKP | ESAI_xCCR_xHCKP | ESAI_xCCR_xFSP |
+ ESAI_xCCR_xFSD | ESAI_xCCR_xCKD | ESAI_xCR_xWA;
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TCCR, mask, xccr);
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RCCR, mask, xccr);
+
+ return 0;
+}
+
+static int fsl_esai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+
+ /*
+ * Some platforms might use the same bit to gate all three or two of
+ * clocks, so keep all clocks open/close at the same time for safety
+ */
+ clk_prepare_enable(esai_priv->coreclk);
+ if (!IS_ERR(esai_priv->extalclk))
+ clk_prepare_enable(esai_priv->extalclk);
+ if (!IS_ERR(esai_priv->fsysclk))
+ clk_prepare_enable(esai_priv->fsysclk);
+
+ if (!dai->active) {
+ /* Reset Port C */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_PRRC,
+ ESAI_PRRC_PDC_MASK, ESAI_PRRC_PDC(ESAI_GPIO));
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_PCRC,
+ ESAI_PCRC_PC_MASK, ESAI_PCRC_PC(ESAI_GPIO));
+
+ /* Set synchronous mode */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_SAICR,
+ ESAI_SAICR_SYNC, esai_priv->synchronous ?
+ ESAI_SAICR_SYNC : 0);
+
+ /* Set a default slot number -- 2 */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_TCCR,
+ ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(2));
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_RCCR,
+ ESAI_xCCR_xDC_MASK, ESAI_xCCR_xDC(2));
+ }
+
+ return 0;
+}
+
+static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ u32 width = snd_pcm_format_width(params_format(params));
+ u32 channels = params_channels(params);
+ u32 bclk, mask, val, ret;
+
+ bclk = params_rate(params) * esai_priv->slot_width * 2;
+
+ ret = fsl_esai_set_bclk(dai, tx, bclk);
+ if (ret)
+ return ret;
+
+ /* Use Normal mode to support monaural audio */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
+ ESAI_xCR_xMOD_MASK, params_channels(params) > 1 ?
+ ESAI_xCR_xMOD_NETWORK : 0);
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx),
+ ESAI_xFCR_xFR_MASK, ESAI_xFCR_xFR);
+
+ mask = ESAI_xFCR_xFR_MASK | ESAI_xFCR_xWA_MASK | ESAI_xFCR_xFWM_MASK |
+ (tx ? ESAI_xFCR_TE_MASK | ESAI_xFCR_TIEN : ESAI_xFCR_RE_MASK);
+ val = ESAI_xFCR_xWA(width) | ESAI_xFCR_xFWM(esai_priv->fifo_depth) |
+ (tx ? ESAI_xFCR_TE(channels) | ESAI_xFCR_TIEN : ESAI_xFCR_RE(channels));
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx), mask, val);
+
+ mask = ESAI_xCR_xSWS_MASK | (tx ? ESAI_xCR_PADC : 0);
+ val = ESAI_xCR_xSWS(esai_priv->slot_width, width) | (tx ? ESAI_xCR_PADC : 0);
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx), mask, val);
+
+ return 0;
+}
+
+static void fsl_esai_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+
+ if (!IS_ERR(esai_priv->fsysclk))
+ clk_disable_unprepare(esai_priv->fsysclk);
+ if (!IS_ERR(esai_priv->extalclk))
+ clk_disable_unprepare(esai_priv->extalclk);
+ clk_disable_unprepare(esai_priv->coreclk);
+}
+
+static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ u8 i, channels = substream->runtime->channels;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx),
+ ESAI_xFCR_xFEN_MASK, ESAI_xFCR_xFEN);
+
+ /* Write initial words reqiured by ESAI as normal procedure */
+ for (i = 0; tx && i < channels; i++)
+ regmap_write(esai_priv->regmap, REG_ESAI_ETDR, 0x0);
+
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
+ tx ? ESAI_xCR_TE_MASK : ESAI_xCR_RE_MASK,
+ tx ? ESAI_xCR_TE(channels) : ESAI_xCR_RE(channels));
+ break;
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
+ tx ? ESAI_xCR_TE_MASK : ESAI_xCR_RE_MASK, 0);
+
+ /* Disable and reset FIFO */
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx),
+ ESAI_xFCR_xFR | ESAI_xFCR_xFEN, ESAI_xFCR_xFR);
+ regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx),
+ ESAI_xFCR_xFR, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops fsl_esai_dai_ops = {
+ .startup = fsl_esai_startup,
+ .shutdown = fsl_esai_shutdown,
+ .trigger = fsl_esai_trigger,
+ .hw_params = fsl_esai_hw_params,
+ .set_sysclk = fsl_esai_set_dai_sysclk,
+ .set_fmt = fsl_esai_set_dai_fmt,
+ .set_tdm_slot = fsl_esai_set_dai_tdm_slot,
+};
+
+static int fsl_esai_dai_probe(struct snd_soc_dai *dai)
+{
+ struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, &esai_priv->dma_params_tx,
+ &esai_priv->dma_params_rx);
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver fsl_esai_dai = {
+ .probe = fsl_esai_dai_probe,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 12,
+ .rates = FSL_ESAI_RATES,
+ .formats = FSL_ESAI_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = FSL_ESAI_RATES,
+ .formats = FSL_ESAI_FORMATS,
+ },
+ .ops = &fsl_esai_dai_ops,
+};
+
+static const struct snd_soc_component_driver fsl_esai_component = {
+ .name = "fsl-esai",
+};
+
+static bool fsl_esai_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case REG_ESAI_ERDR:
+ case REG_ESAI_ECR:
+ case REG_ESAI_ESR:
+ case REG_ESAI_TFCR:
+ case REG_ESAI_TFSR:
+ case REG_ESAI_RFCR:
+ case REG_ESAI_RFSR:
+ case REG_ESAI_RX0:
+ case REG_ESAI_RX1:
+ case REG_ESAI_RX2:
+ case REG_ESAI_RX3:
+ case REG_ESAI_SAISR:
+ case REG_ESAI_SAICR:
+ case REG_ESAI_TCR:
+ case REG_ESAI_TCCR:
+ case REG_ESAI_RCR:
+ case REG_ESAI_RCCR:
+ case REG_ESAI_TSMA:
+ case REG_ESAI_TSMB:
+ case REG_ESAI_RSMA:
+ case REG_ESAI_RSMB:
+ case REG_ESAI_PRRC:
+ case REG_ESAI_PCRC:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool fsl_esai_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case REG_ESAI_ETDR:
+ case REG_ESAI_ECR:
+ case REG_ESAI_TFCR:
+ case REG_ESAI_RFCR:
+ case REG_ESAI_TX0:
+ case REG_ESAI_TX1:
+ case REG_ESAI_TX2:
+ case REG_ESAI_TX3:
+ case REG_ESAI_TX4:
+ case REG_ESAI_TX5:
+ case REG_ESAI_TSR:
+ case REG_ESAI_SAICR:
+ case REG_ESAI_TCR:
+ case REG_ESAI_TCCR:
+ case REG_ESAI_RCR:
+ case REG_ESAI_RCCR:
+ case REG_ESAI_TSMA:
+ case REG_ESAI_TSMB:
+ case REG_ESAI_RSMA:
+ case REG_ESAI_RSMB:
+ case REG_ESAI_PRRC:
+ case REG_ESAI_PCRC:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config fsl_esai_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+
+ .max_register = REG_ESAI_PCRC,
+ .readable_reg = fsl_esai_readable_reg,
+ .writeable_reg = fsl_esai_writeable_reg,
+};
+
+static int fsl_esai_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct fsl_esai *esai_priv;
+ struct resource *res;
+ const uint32_t *iprop;
+ void __iomem *regs;
+ int irq, ret;
+
+ esai_priv = devm_kzalloc(&pdev->dev, sizeof(*esai_priv), GFP_KERNEL);
+ if (!esai_priv)
+ return -ENOMEM;
+
+ esai_priv->pdev = pdev;
+ strcpy(esai_priv->name, np->name);
+
+ /* Get the addresses and IRQ */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ esai_priv->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
+ "core", regs, &fsl_esai_regmap_config);
+ if (IS_ERR(esai_priv->regmap)) {
+ dev_err(&pdev->dev, "failed to init regmap: %ld\n",
+ PTR_ERR(esai_priv->regmap));
+ return PTR_ERR(esai_priv->regmap);
+ }
+
+ esai_priv->coreclk = devm_clk_get(&pdev->dev, "core");
+ if (IS_ERR(esai_priv->coreclk)) {
+ dev_err(&pdev->dev, "failed to get core clock: %ld\n",
+ PTR_ERR(esai_priv->coreclk));
+ return PTR_ERR(esai_priv->coreclk);
+ }
+
+ esai_priv->extalclk = devm_clk_get(&pdev->dev, "extal");
+ if (IS_ERR(esai_priv->extalclk))
+ dev_warn(&pdev->dev, "failed to get extal clock: %ld\n",
+ PTR_ERR(esai_priv->extalclk));
+
+ esai_priv->fsysclk = devm_clk_get(&pdev->dev, "fsys");
+ if (IS_ERR(esai_priv->fsysclk))
+ dev_warn(&pdev->dev, "failed to get fsys clock: %ld\n",
+ PTR_ERR(esai_priv->fsysclk));
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no irq for node %s\n", np->full_name);
+ return irq;
+ }
+
+ ret = devm_request_irq(&pdev->dev, irq, esai_isr, 0,
+ esai_priv->name, esai_priv);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim irq %u\n", irq);
+ return ret;
+ }
+
+ /* Set a default slot size */
+ esai_priv->slot_width = 32;
+
+ /* Set a default master/slave state */
+ esai_priv->slave_mode = true;
+
+ /* Determine the FIFO depth */
+ iprop = of_get_property(np, "fsl,fifo-depth", NULL);
+ if (iprop)
+ esai_priv->fifo_depth = be32_to_cpup(iprop);
+ else
+ esai_priv->fifo_depth = 64;
+
+ esai_priv->dma_params_tx.maxburst = 16;
+ esai_priv->dma_params_rx.maxburst = 16;
+ esai_priv->dma_params_tx.addr = res->start + REG_ESAI_ETDR;
+ esai_priv->dma_params_rx.addr = res->start + REG_ESAI_ERDR;
+
+ esai_priv->synchronous =
+ of_property_read_bool(np, "fsl,esai-synchronous");
+
+ /* Implement full symmetry for synchronous mode */
+ if (esai_priv->synchronous) {
+ fsl_esai_dai.symmetric_rates = 1;
+ fsl_esai_dai.symmetric_channels = 1;
+ fsl_esai_dai.symmetric_samplebits = 1;
+ }
+
+ dev_set_drvdata(&pdev->dev, esai_priv);
+
+ /* Reset ESAI unit */
+ ret = regmap_write(esai_priv->regmap, REG_ESAI_ECR, ESAI_ECR_ERST);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to reset ESAI: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * We need to enable ESAI so as to access some of its registers.
+ * Otherwise, we would fail to dump regmap from user space.
+ */
+ ret = regmap_write(esai_priv->regmap, REG_ESAI_ECR, ESAI_ECR_ESAIEN);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable ESAI: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_snd_soc_register_component(&pdev->dev, &fsl_esai_component,
+ &fsl_esai_dai, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register DAI: %d\n", ret);
+ return ret;
+ }
+
+ ret = imx_pcm_dma_init(pdev);
+ if (ret)
+ dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
+
+ return ret;
+}
+
+static const struct of_device_id fsl_esai_dt_ids[] = {
+ { .compatible = "fsl,imx35-esai", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_esai_dt_ids);
+
+static struct platform_driver fsl_esai_driver = {
+ .probe = fsl_esai_probe,
+ .driver = {
+ .name = "fsl-esai-dai",
+ .owner = THIS_MODULE,
+ .of_match_table = fsl_esai_dt_ids,
+ },
+};
+
+module_platform_driver(fsl_esai_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale ESAI CPU DAI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:fsl-esai-dai");
--- /dev/null
+/*
+ * fsl_esai.h - ALSA ESAI interface for the Freescale i.MX SoC
+ *
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ *
+ * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef _FSL_ESAI_DAI_H
+#define _FSL_ESAI_DAI_H
+
+/* ESAI Register Map */
+#define REG_ESAI_ETDR 0x00
+#define REG_ESAI_ERDR 0x04
+#define REG_ESAI_ECR 0x08
+#define REG_ESAI_ESR 0x0C
+#define REG_ESAI_TFCR 0x10
+#define REG_ESAI_TFSR 0x14
+#define REG_ESAI_RFCR 0x18
+#define REG_ESAI_RFSR 0x1C
+#define REG_ESAI_xFCR(tx) (tx ? REG_ESAI_TFCR : REG_ESAI_RFCR)
+#define REG_ESAI_xFSR(tx) (tx ? REG_ESAI_TFSR : REG_ESAI_RFSR)
+#define REG_ESAI_TX0 0x80
+#define REG_ESAI_TX1 0x84
+#define REG_ESAI_TX2 0x88
+#define REG_ESAI_TX3 0x8C
+#define REG_ESAI_TX4 0x90
+#define REG_ESAI_TX5 0x94
+#define REG_ESAI_TSR 0x98
+#define REG_ESAI_RX0 0xA0
+#define REG_ESAI_RX1 0xA4
+#define REG_ESAI_RX2 0xA8
+#define REG_ESAI_RX3 0xAC
+#define REG_ESAI_SAISR 0xCC
+#define REG_ESAI_SAICR 0xD0
+#define REG_ESAI_TCR 0xD4
+#define REG_ESAI_TCCR 0xD8
+#define REG_ESAI_RCR 0xDC
+#define REG_ESAI_RCCR 0xE0
+#define REG_ESAI_xCR(tx) (tx ? REG_ESAI_TCR : REG_ESAI_RCR)
+#define REG_ESAI_xCCR(tx) (tx ? REG_ESAI_TCCR : REG_ESAI_RCCR)
+#define REG_ESAI_TSMA 0xE4
+#define REG_ESAI_TSMB 0xE8
+#define REG_ESAI_RSMA 0xEC
+#define REG_ESAI_RSMB 0xF0
+#define REG_ESAI_xSMA(tx) (tx ? REG_ESAI_TSMA : REG_ESAI_RSMA)
+#define REG_ESAI_xSMB(tx) (tx ? REG_ESAI_TSMB : REG_ESAI_RSMB)
+#define REG_ESAI_PRRC 0xF8
+#define REG_ESAI_PCRC 0xFC
+
+/* ESAI Control Register -- REG_ESAI_ECR 0x8 */
+#define ESAI_ECR_ETI_SHIFT 19
+#define ESAI_ECR_ETI_MASK (1 << ESAI_ECR_ETI_SHIFT)
+#define ESAI_ECR_ETI (1 << ESAI_ECR_ETI_SHIFT)
+#define ESAI_ECR_ETO_SHIFT 18
+#define ESAI_ECR_ETO_MASK (1 << ESAI_ECR_ETO_SHIFT)
+#define ESAI_ECR_ETO (1 << ESAI_ECR_ETO_SHIFT)
+#define ESAI_ECR_ERI_SHIFT 17
+#define ESAI_ECR_ERI_MASK (1 << ESAI_ECR_ERI_SHIFT)
+#define ESAI_ECR_ERI (1 << ESAI_ECR_ERI_SHIFT)
+#define ESAI_ECR_ERO_SHIFT 16
+#define ESAI_ECR_ERO_MASK (1 << ESAI_ECR_ERO_SHIFT)
+#define ESAI_ECR_ERO (1 << ESAI_ECR_ERO_SHIFT)
+#define ESAI_ECR_ERST_SHIFT 1
+#define ESAI_ECR_ERST_MASK (1 << ESAI_ECR_ERST_SHIFT)
+#define ESAI_ECR_ERST (1 << ESAI_ECR_ERST_SHIFT)
+#define ESAI_ECR_ESAIEN_SHIFT 0
+#define ESAI_ECR_ESAIEN_MASK (1 << ESAI_ECR_ESAIEN_SHIFT)
+#define ESAI_ECR_ESAIEN (1 << ESAI_ECR_ESAIEN_SHIFT)
+
+/* ESAI Status Register -- REG_ESAI_ESR 0xC */
+#define ESAI_ESR_TINIT_SHIFT 10
+#define ESAI_ESR_TINIT_MASK (1 << ESAI_ESR_TINIT_SHIFT)
+#define ESAI_ESR_TINIT (1 << ESAI_ESR_TINIT_SHIFT)
+#define ESAI_ESR_RFF_SHIFT 9
+#define ESAI_ESR_RFF_MASK (1 << ESAI_ESR_RFF_SHIFT)
+#define ESAI_ESR_RFF (1 << ESAI_ESR_RFF_SHIFT)
+#define ESAI_ESR_TFE_SHIFT 8
+#define ESAI_ESR_TFE_MASK (1 << ESAI_ESR_TFE_SHIFT)
+#define ESAI_ESR_TFE (1 << ESAI_ESR_TFE_SHIFT)
+#define ESAI_ESR_TLS_SHIFT 7
+#define ESAI_ESR_TLS_MASK (1 << ESAI_ESR_TLS_SHIFT)
+#define ESAI_ESR_TLS (1 << ESAI_ESR_TLS_SHIFT)
+#define ESAI_ESR_TDE_SHIFT 6
+#define ESAI_ESR_TDE_MASK (1 << ESAI_ESR_TDE_SHIFT)
+#define ESAI_ESR_TDE (1 << ESAI_ESR_TDE_SHIFT)
+#define ESAI_ESR_TED_SHIFT 5
+#define ESAI_ESR_TED_MASK (1 << ESAI_ESR_TED_SHIFT)
+#define ESAI_ESR_TED (1 << ESAI_ESR_TED_SHIFT)
+#define ESAI_ESR_TD_SHIFT 4
+#define ESAI_ESR_TD_MASK (1 << ESAI_ESR_TD_SHIFT)
+#define ESAI_ESR_TD (1 << ESAI_ESR_TD_SHIFT)
+#define ESAI_ESR_RLS_SHIFT 3
+#define ESAI_ESR_RLS_MASK (1 << ESAI_ESR_RLS_SHIFT)
+#define ESAI_ESR_RLS (1 << ESAI_ESR_RLS_SHIFT)
+#define ESAI_ESR_RDE_SHIFT 2
+#define ESAI_ESR_RDE_MASK (1 << ESAI_ESR_RDE_SHIFT)
+#define ESAI_ESR_RDE (1 << ESAI_ESR_RDE_SHIFT)
+#define ESAI_ESR_RED_SHIFT 1
+#define ESAI_ESR_RED_MASK (1 << ESAI_ESR_RED_SHIFT)
+#define ESAI_ESR_RED (1 << ESAI_ESR_RED_SHIFT)
+#define ESAI_ESR_RD_SHIFT 0
+#define ESAI_ESR_RD_MASK (1 << ESAI_ESR_RD_SHIFT)
+#define ESAI_ESR_RD (1 << ESAI_ESR_RD_SHIFT)
+
+/*
+ * Transmit FIFO Configuration Register -- REG_ESAI_TFCR 0x10
+ * Receive FIFO Configuration Register -- REG_ESAI_RFCR 0x18
+ */
+#define ESAI_xFCR_TIEN_SHIFT 19
+#define ESAI_xFCR_TIEN_MASK (1 << ESAI_xFCR_TIEN_SHIFT)
+#define ESAI_xFCR_TIEN (1 << ESAI_xFCR_TIEN_SHIFT)
+#define ESAI_xFCR_REXT_SHIFT 19
+#define ESAI_xFCR_REXT_MASK (1 << ESAI_xFCR_REXT_SHIFT)
+#define ESAI_xFCR_REXT (1 << ESAI_xFCR_REXT_SHIFT)
+#define ESAI_xFCR_xWA_SHIFT 16
+#define ESAI_xFCR_xWA_WIDTH 3
+#define ESAI_xFCR_xWA_MASK (((1 << ESAI_xFCR_xWA_WIDTH) - 1) << ESAI_xFCR_xWA_SHIFT)
+#define ESAI_xFCR_xWA(v) (((8 - ((v) >> 2)) << ESAI_xFCR_xWA_SHIFT) & ESAI_xFCR_xWA_MASK)
+#define ESAI_xFCR_xFWM_SHIFT 8
+#define ESAI_xFCR_xFWM_WIDTH 8
+#define ESAI_xFCR_xFWM_MASK (((1 << ESAI_xFCR_xFWM_WIDTH) - 1) << ESAI_xFCR_xFWM_SHIFT)
+#define ESAI_xFCR_xFWM(v) ((((v) - 1) << ESAI_xFCR_xFWM_SHIFT) & ESAI_xFCR_xFWM_MASK)
+#define ESAI_xFCR_xE_SHIFT 2
+#define ESAI_xFCR_TE_WIDTH 6
+#define ESAI_xFCR_RE_WIDTH 4
+#define ESAI_xFCR_TE_MASK (((1 << ESAI_xFCR_TE_WIDTH) - 1) << ESAI_xFCR_xE_SHIFT)
+#define ESAI_xFCR_RE_MASK (((1 << ESAI_xFCR_RE_WIDTH) - 1) << ESAI_xFCR_xE_SHIFT)
+#define ESAI_xFCR_TE(x) ((ESAI_xFCR_TE_MASK >> (ESAI_xFCR_TE_WIDTH - ((x + 1) >> 1))) & ESAI_xFCR_TE_MASK)
+#define ESAI_xFCR_RE(x) ((ESAI_xFCR_RE_MASK >> (ESAI_xFCR_RE_WIDTH - ((x + 1) >> 1))) & ESAI_xFCR_RE_MASK)
+#define ESAI_xFCR_xFR_SHIFT 1
+#define ESAI_xFCR_xFR_MASK (1 << ESAI_xFCR_xFR_SHIFT)
+#define ESAI_xFCR_xFR (1 << ESAI_xFCR_xFR_SHIFT)
+#define ESAI_xFCR_xFEN_SHIFT 0
+#define ESAI_xFCR_xFEN_MASK (1 << ESAI_xFCR_xFEN_SHIFT)
+#define ESAI_xFCR_xFEN (1 << ESAI_xFCR_xFEN_SHIFT)
+
+/*
+ * Transmit FIFO Status Register -- REG_ESAI_TFSR 0x14
+ * Receive FIFO Status Register --REG_ESAI_RFSR 0x1C
+ */
+#define ESAI_xFSR_NTFO_SHIFT 12
+#define ESAI_xFSR_NRFI_SHIFT 12
+#define ESAI_xFSR_NTFI_SHIFT 8
+#define ESAI_xFSR_NRFO_SHIFT 8
+#define ESAI_xFSR_NTFx_WIDTH 3
+#define ESAI_xFSR_NRFx_WIDTH 2
+#define ESAI_xFSR_NTFO_MASK (((1 << ESAI_xFSR_NTFx_WIDTH) - 1) << ESAI_xFSR_NTFO_SHIFT)
+#define ESAI_xFSR_NTFI_MASK (((1 << ESAI_xFSR_NTFx_WIDTH) - 1) << ESAI_xFSR_NTFI_SHIFT)
+#define ESAI_xFSR_NRFO_MASK (((1 << ESAI_xFSR_NRFx_WIDTH) - 1) << ESAI_xFSR_NRFO_SHIFT)
+#define ESAI_xFSR_NRFI_MASK (((1 << ESAI_xFSR_NRFx_WIDTH) - 1) << ESAI_xFSR_NRFI_SHIFT)
+#define ESAI_xFSR_xFCNT_SHIFT 0
+#define ESAI_xFSR_xFCNT_WIDTH 8
+#define ESAI_xFSR_xFCNT_MASK (((1 << ESAI_xFSR_xFCNT_WIDTH) - 1) << ESAI_xFSR_xFCNT_SHIFT)
+
+/* ESAI Transmit Slot Register -- REG_ESAI_TSR 0x98 */
+#define ESAI_TSR_SHIFT 0
+#define ESAI_TSR_WIDTH 24
+#define ESAI_TSR_MASK (((1 << ESAI_TSR_WIDTH) - 1) << ESAI_TSR_SHIFT)
+
+/* Serial Audio Interface Status Register -- REG_ESAI_SAISR 0xCC */
+#define ESAI_SAISR_TODFE_SHIFT 17
+#define ESAI_SAISR_TODFE_MASK (1 << ESAI_SAISR_TODFE_SHIFT)
+#define ESAI_SAISR_TODFE (1 << ESAI_SAISR_TODFE_SHIFT)
+#define ESAI_SAISR_TEDE_SHIFT 16
+#define ESAI_SAISR_TEDE_MASK (1 << ESAI_SAISR_TEDE_SHIFT)
+#define ESAI_SAISR_TEDE (1 << ESAI_SAISR_TEDE_SHIFT)
+#define ESAI_SAISR_TDE_SHIFT 15
+#define ESAI_SAISR_TDE_MASK (1 << ESAI_SAISR_TDE_SHIFT)
+#define ESAI_SAISR_TDE (1 << ESAI_SAISR_TDE_SHIFT)
+#define ESAI_SAISR_TUE_SHIFT 14
+#define ESAI_SAISR_TUE_MASK (1 << ESAI_SAISR_TUE_SHIFT)
+#define ESAI_SAISR_TUE (1 << ESAI_SAISR_TUE_SHIFT)
+#define ESAI_SAISR_TFS_SHIFT 13
+#define ESAI_SAISR_TFS_MASK (1 << ESAI_SAISR_TFS_SHIFT)
+#define ESAI_SAISR_TFS (1 << ESAI_SAISR_TFS_SHIFT)
+#define ESAI_SAISR_RODF_SHIFT 10
+#define ESAI_SAISR_RODF_MASK (1 << ESAI_SAISR_RODF_SHIFT)
+#define ESAI_SAISR_RODF (1 << ESAI_SAISR_RODF_SHIFT)
+#define ESAI_SAISR_REDF_SHIFT 9
+#define ESAI_SAISR_REDF_MASK (1 << ESAI_SAISR_REDF_SHIFT)
+#define ESAI_SAISR_REDF (1 << ESAI_SAISR_REDF_SHIFT)
+#define ESAI_SAISR_RDF_SHIFT 8
+#define ESAI_SAISR_RDF_MASK (1 << ESAI_SAISR_RDF_SHIFT)
+#define ESAI_SAISR_RDF (1 << ESAI_SAISR_RDF_SHIFT)
+#define ESAI_SAISR_ROE_SHIFT 7
+#define ESAI_SAISR_ROE_MASK (1 << ESAI_SAISR_ROE_SHIFT)
+#define ESAI_SAISR_ROE (1 << ESAI_SAISR_ROE_SHIFT)
+#define ESAI_SAISR_RFS_SHIFT 6
+#define ESAI_SAISR_RFS_MASK (1 << ESAI_SAISR_RFS_SHIFT)
+#define ESAI_SAISR_RFS (1 << ESAI_SAISR_RFS_SHIFT)
+#define ESAI_SAISR_IF2_SHIFT 2
+#define ESAI_SAISR_IF2_MASK (1 << ESAI_SAISR_IF2_SHIFT)
+#define ESAI_SAISR_IF2 (1 << ESAI_SAISR_IF2_SHIFT)
+#define ESAI_SAISR_IF1_SHIFT 1
+#define ESAI_SAISR_IF1_MASK (1 << ESAI_SAISR_IF1_SHIFT)
+#define ESAI_SAISR_IF1 (1 << ESAI_SAISR_IF1_SHIFT)
+#define ESAI_SAISR_IF0_SHIFT 0
+#define ESAI_SAISR_IF0_MASK (1 << ESAI_SAISR_IF0_SHIFT)
+#define ESAI_SAISR_IF0 (1 << ESAI_SAISR_IF0_SHIFT)
+
+/* Serial Audio Interface Control Register -- REG_ESAI_SAICR 0xD0 */
+#define ESAI_SAICR_ALC_SHIFT 8
+#define ESAI_SAICR_ALC_MASK (1 << ESAI_SAICR_ALC_SHIFT)
+#define ESAI_SAICR_ALC (1 << ESAI_SAICR_ALC_SHIFT)
+#define ESAI_SAICR_TEBE_SHIFT 7
+#define ESAI_SAICR_TEBE_MASK (1 << ESAI_SAICR_TEBE_SHIFT)
+#define ESAI_SAICR_TEBE (1 << ESAI_SAICR_TEBE_SHIFT)
+#define ESAI_SAICR_SYNC_SHIFT 6
+#define ESAI_SAICR_SYNC_MASK (1 << ESAI_SAICR_SYNC_SHIFT)
+#define ESAI_SAICR_SYNC (1 << ESAI_SAICR_SYNC_SHIFT)
+#define ESAI_SAICR_OF2_SHIFT 2
+#define ESAI_SAICR_OF2_MASK (1 << ESAI_SAICR_OF2_SHIFT)
+#define ESAI_SAICR_OF2 (1 << ESAI_SAICR_OF2_SHIFT)
+#define ESAI_SAICR_OF1_SHIFT 1
+#define ESAI_SAICR_OF1_MASK (1 << ESAI_SAICR_OF1_SHIFT)
+#define ESAI_SAICR_OF1 (1 << ESAI_SAICR_OF1_SHIFT)
+#define ESAI_SAICR_OF0_SHIFT 0
+#define ESAI_SAICR_OF0_MASK (1 << ESAI_SAICR_OF0_SHIFT)
+#define ESAI_SAICR_OF0 (1 << ESAI_SAICR_OF0_SHIFT)
+
+/*
+ * Transmit Control Register -- REG_ESAI_TCR 0xD4
+ * Receive Control Register -- REG_ESAI_RCR 0xDC
+ */
+#define ESAI_xCR_xLIE_SHIFT 23
+#define ESAI_xCR_xLIE_MASK (1 << ESAI_xCR_xLIE_SHIFT)
+#define ESAI_xCR_xLIE (1 << ESAI_xCR_xLIE_SHIFT)
+#define ESAI_xCR_xIE_SHIFT 22
+#define ESAI_xCR_xIE_MASK (1 << ESAI_xCR_xIE_SHIFT)
+#define ESAI_xCR_xIE (1 << ESAI_xCR_xIE_SHIFT)
+#define ESAI_xCR_xEDIE_SHIFT 21
+#define ESAI_xCR_xEDIE_MASK (1 << ESAI_xCR_xEDIE_SHIFT)
+#define ESAI_xCR_xEDIE (1 << ESAI_xCR_xEDIE_SHIFT)
+#define ESAI_xCR_xEIE_SHIFT 20
+#define ESAI_xCR_xEIE_MASK (1 << ESAI_xCR_xEIE_SHIFT)
+#define ESAI_xCR_xEIE (1 << ESAI_xCR_xEIE_SHIFT)
+#define ESAI_xCR_xPR_SHIFT 19
+#define ESAI_xCR_xPR_MASK (1 << ESAI_xCR_xPR_SHIFT)
+#define ESAI_xCR_xPR (1 << ESAI_xCR_xPR_SHIFT)
+#define ESAI_xCR_PADC_SHIFT 17
+#define ESAI_xCR_PADC_MASK (1 << ESAI_xCR_PADC_SHIFT)
+#define ESAI_xCR_PADC (1 << ESAI_xCR_PADC_SHIFT)
+#define ESAI_xCR_xFSR_SHIFT 16
+#define ESAI_xCR_xFSR_MASK (1 << ESAI_xCR_xFSR_SHIFT)
+#define ESAI_xCR_xFSR (1 << ESAI_xCR_xFSR_SHIFT)
+#define ESAI_xCR_xFSL_SHIFT 15
+#define ESAI_xCR_xFSL_MASK (1 << ESAI_xCR_xFSL_SHIFT)
+#define ESAI_xCR_xFSL (1 << ESAI_xCR_xFSL_SHIFT)
+#define ESAI_xCR_xSWS_SHIFT 10
+#define ESAI_xCR_xSWS_WIDTH 5
+#define ESAI_xCR_xSWS_MASK (((1 << ESAI_xCR_xSWS_WIDTH) - 1) << ESAI_xCR_xSWS_SHIFT)
+#define ESAI_xCR_xSWS(s, w) ((w < 24 ? (s - w + ((w - 8) >> 2)) : (s < 32 ? 0x1e : 0x1f)) << ESAI_xCR_xSWS_SHIFT)
+#define ESAI_xCR_xMOD_SHIFT 8
+#define ESAI_xCR_xMOD_WIDTH 2
+#define ESAI_xCR_xMOD_MASK (((1 << ESAI_xCR_xMOD_WIDTH) - 1) << ESAI_xCR_xMOD_SHIFT)
+#define ESAI_xCR_xMOD_ONDEMAND (0x1 << ESAI_xCR_xMOD_SHIFT)
+#define ESAI_xCR_xMOD_NETWORK (0x1 << ESAI_xCR_xMOD_SHIFT)
+#define ESAI_xCR_xMOD_AC97 (0x3 << ESAI_xCR_xMOD_SHIFT)
+#define ESAI_xCR_xWA_SHIFT 7
+#define ESAI_xCR_xWA_MASK (1 << ESAI_xCR_xWA_SHIFT)
+#define ESAI_xCR_xWA (1 << ESAI_xCR_xWA_SHIFT)
+#define ESAI_xCR_xSHFD_SHIFT 6
+#define ESAI_xCR_xSHFD_MASK (1 << ESAI_xCR_xSHFD_SHIFT)
+#define ESAI_xCR_xSHFD (1 << ESAI_xCR_xSHFD_SHIFT)
+#define ESAI_xCR_xE_SHIFT 0
+#define ESAI_xCR_TE_WIDTH 6
+#define ESAI_xCR_RE_WIDTH 4
+#define ESAI_xCR_TE_MASK (((1 << ESAI_xCR_TE_WIDTH) - 1) << ESAI_xCR_xE_SHIFT)
+#define ESAI_xCR_RE_MASK (((1 << ESAI_xCR_RE_WIDTH) - 1) << ESAI_xCR_xE_SHIFT)
+#define ESAI_xCR_TE(x) ((ESAI_xCR_TE_MASK >> (ESAI_xCR_TE_WIDTH - ((x + 1) >> 1))) & ESAI_xCR_TE_MASK)
+#define ESAI_xCR_RE(x) ((ESAI_xCR_RE_MASK >> (ESAI_xCR_RE_WIDTH - ((x + 1) >> 1))) & ESAI_xCR_RE_MASK)
+
+/*
+ * Transmit Clock Control Register -- REG_ESAI_TCCR 0xD8
+ * Receive Clock Control Register -- REG_ESAI_RCCR 0xE0
+ */
+#define ESAI_xCCR_xHCKD_SHIFT 23
+#define ESAI_xCCR_xHCKD_MASK (1 << ESAI_xCCR_xHCKD_SHIFT)
+#define ESAI_xCCR_xHCKD (1 << ESAI_xCCR_xHCKD_SHIFT)
+#define ESAI_xCCR_xFSD_SHIFT 22
+#define ESAI_xCCR_xFSD_MASK (1 << ESAI_xCCR_xFSD_SHIFT)
+#define ESAI_xCCR_xFSD (1 << ESAI_xCCR_xFSD_SHIFT)
+#define ESAI_xCCR_xCKD_SHIFT 21
+#define ESAI_xCCR_xCKD_MASK (1 << ESAI_xCCR_xCKD_SHIFT)
+#define ESAI_xCCR_xCKD (1 << ESAI_xCCR_xCKD_SHIFT)
+#define ESAI_xCCR_xHCKP_SHIFT 20
+#define ESAI_xCCR_xHCKP_MASK (1 << ESAI_xCCR_xHCKP_SHIFT)
+#define ESAI_xCCR_xHCKP (1 << ESAI_xCCR_xHCKP_SHIFT)
+#define ESAI_xCCR_xFSP_SHIFT 19
+#define ESAI_xCCR_xFSP_MASK (1 << ESAI_xCCR_xFSP_SHIFT)
+#define ESAI_xCCR_xFSP (1 << ESAI_xCCR_xFSP_SHIFT)
+#define ESAI_xCCR_xCKP_SHIFT 18
+#define ESAI_xCCR_xCKP_MASK (1 << ESAI_xCCR_xCKP_SHIFT)
+#define ESAI_xCCR_xCKP (1 << ESAI_xCCR_xCKP_SHIFT)
+#define ESAI_xCCR_xFP_SHIFT 14
+#define ESAI_xCCR_xFP_WIDTH 4
+#define ESAI_xCCR_xFP_MASK (((1 << ESAI_xCCR_xFP_WIDTH) - 1) << ESAI_xCCR_xFP_SHIFT)
+#define ESAI_xCCR_xFP(v) ((((v) - 1) << ESAI_xCCR_xFP_SHIFT) & ESAI_xCCR_xFP_MASK)
+#define ESAI_xCCR_xDC_SHIFT 9
+#define ESAI_xCCR_xDC_WIDTH 4
+#define ESAI_xCCR_xDC_MASK (((1 << ESAI_xCCR_xDC_WIDTH) - 1) << ESAI_xCCR_xDC_SHIFT)
+#define ESAI_xCCR_xDC(v) ((((v) - 1) << ESAI_xCCR_xDC_SHIFT) & ESAI_xCCR_xDC_MASK)
+#define ESAI_xCCR_xPSR_SHIFT 8
+#define ESAI_xCCR_xPSR_MASK (1 << ESAI_xCCR_xPSR_SHIFT)
+#define ESAI_xCCR_xPSR_BYPASS (1 << ESAI_xCCR_xPSR_SHIFT)
+#define ESAI_xCCR_xPSR_DIV8 (0 << ESAI_xCCR_xPSR_SHIFT)
+#define ESAI_xCCR_xPM_SHIFT 0
+#define ESAI_xCCR_xPM_WIDTH 8
+#define ESAI_xCCR_xPM_MASK (((1 << ESAI_xCCR_xPM_WIDTH) - 1) << ESAI_xCCR_xPM_SHIFT)
+#define ESAI_xCCR_xPM(v) ((((v) - 1) << ESAI_xCCR_xPM_SHIFT) & ESAI_xCCR_xPM_MASK)
+
+/* Transmit Slot Mask Register A/B -- REG_ESAI_TSMA/B 0xE4 ~ 0xF0 */
+#define ESAI_xSMA_xS_SHIFT 0
+#define ESAI_xSMA_xS_WIDTH 16
+#define ESAI_xSMA_xS_MASK (((1 << ESAI_xSMA_xS_WIDTH) - 1) << ESAI_xSMA_xS_SHIFT)
+#define ESAI_xSMA_xS(v) ((v) & ESAI_xSMA_xS_MASK)
+#define ESAI_xSMB_xS_SHIFT 0
+#define ESAI_xSMB_xS_WIDTH 16
+#define ESAI_xSMB_xS_MASK (((1 << ESAI_xSMB_xS_WIDTH) - 1) << ESAI_xSMB_xS_SHIFT)
+#define ESAI_xSMB_xS(v) (((v) >> ESAI_xSMA_xS_WIDTH) & ESAI_xSMA_xS_MASK)
+
+/* Port C Direction Register -- REG_ESAI_PRRC 0xF8 */
+#define ESAI_PRRC_PDC_SHIFT 0
+#define ESAI_PRRC_PDC_WIDTH 12
+#define ESAI_PRRC_PDC_MASK (((1 << ESAI_PRRC_PDC_WIDTH) - 1) << ESAI_PRRC_PDC_SHIFT)
+#define ESAI_PRRC_PDC(v) ((v) & ESAI_PRRC_PDC_MASK)
+
+/* Port C Control Register -- REG_ESAI_PCRC 0xFC */
+#define ESAI_PCRC_PC_SHIFT 0
+#define ESAI_PCRC_PC_WIDTH 12
+#define ESAI_PCRC_PC_MASK (((1 << ESAI_PCRC_PC_WIDTH) - 1) << ESAI_PCRC_PC_SHIFT)
+#define ESAI_PCRC_PC(v) ((v) & ESAI_PCRC_PC_MASK)
+
+#define ESAI_GPIO 0xfff
+
+/* ESAI clock source */
+#define ESAI_HCKT_FSYS 0
+#define ESAI_HCKT_EXTAL 1
+#define ESAI_HCKR_FSYS 2
+#define ESAI_HCKR_EXTAL 3
+
+/* ESAI clock divider */
+#define ESAI_TX_DIV_PSR 0
+#define ESAI_TX_DIV_PM 1
+#define ESAI_TX_DIV_FP 2
+#define ESAI_RX_DIV_PSR 3
+#define ESAI_RX_DIV_PM 4
+#define ESAI_RX_DIV_FP 5
+#endif /* _FSL_ESAI_DAI_H */
projects / platform / kernel / linux-stable.git / commitdiff