[alsa-devel] [PATCH v3 1/2] ASoC: fsl: Add S/PDIF CPU DAI driver
Nicolin Chen
b42378 at freescale.com
Mon Aug 5 09:29:40 CEST 2013
This patch add S/PDIF controller driver for Freescale SoC.
Signed-off-by: Nicolin Chen <b42378 at freescale.com>
---
.../devicetree/bindings/sound/fsl,spdif.txt | 62 +
sound/soc/fsl/Kconfig | 3 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/fsl_spdif.c | 1311 ++++++++++++++++++++
sound/soc/fsl/fsl_spdif.h | 227 ++++
5 files changed, 1605 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/fsl,spdif.txt
create mode 100644 sound/soc/fsl/fsl_spdif.c
create mode 100644 sound/soc/fsl/fsl_spdif.h
diff --git a/Documentation/devicetree/bindings/sound/fsl,spdif.txt b/Documentation/devicetree/bindings/sound/fsl,spdif.txt
new file mode 100644
index 0000000..8b1bfe2
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,spdif.txt
@@ -0,0 +1,62 @@
+Freescale Sony/Philips Digital Interface Format (S/PDIF) Controller
+
+The Freescale S/PDIF audio block is a stereo transceiver that allows the
+processor to receive and transmit digital audio via an coaxial cable or
+a fibre cable.
+
+Required properties:
+
+ - compatible : Compatible list, contains "fsl,fsl-spdif" or SoC specific
+ "fsl,imx6q-spdif", "fsl,imx6sl-spdif".
+
+ - reg : Offset and length of the register set for the device.
+
+ - interrupts : Should contain spdif interrupt.
+
+ - dmas : Generic dma devicetree binding as described in
+ Documentation/devicetree/bindings/dma/dma.txt.
+
+ - dma-names : Two dmas have to be defined, "tx" and "rx".
+
+ - clocks : (First) The phandle for the clock ID registered in clock tree.
+ There could be two clocks being set here, but only the first one, CORE
+ clock, is must.
+
+
+Optional properties:
+
+ - clocks : (Second) The phandle for the clock ID registered in clock tree.
+ There could be two clocks being set here, but the second one, TX clock is
+ optional. If absent, the TX clock will use CORE clock as default.
+
+ - clock-names : The names for the two clocks. It will be required only when
+ the second clock's present. If absent, the TX clock will use CORE clock as
+ default.
+
+ - tx-clk-source : The clock cources for Tx. Need to set this source according
+ to the SoC datasheet in SPDIF_STC section. If absent, the default source is
+ value 0x1 - CCM spdif0_clk_root input.
+
+ - rx-clk-source : The clock cource for Rx. Need to set this source according
+ to the SoC datasheet in SPDIF_SRPC section. If absent, the default source is
+ value 0x0 - if (DPLL Locked) SPDIF_RxClk else extal.
+
+
+Example:
+
+spdif: spdif at 02004000 {
+ compatible = "fsl,fsl-spdif";
+ reg = <0x02004000 0x4000>;
+ interrupts = <0 52 0x04>;
+ dmas = <&sdma 14 18 0>,
+ <&sdma 15 18 0>;
+ dma-names = "rx", "tx";
+
+ clocks = <&clks 197>, <&clks 197>;
+ clock-names = "core", "tx";
+
+ tx-clk-source = <0x1>;
+ rx-clk-source = <0x0>;
+
+ status = "okay";
+};
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index c26449b..74f533b 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -1,6 +1,9 @@
config SND_SOC_FSL_SSI
tristate
+config SND_SOC_FSL_SPDIF
+ tristate
+
config SND_SOC_FSL_UTILS
tristate
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index d4b4aa8..4b5970e 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -12,9 +12,11 @@ obj-$(CONFIG_SND_SOC_P1022_RDK) += snd-soc-p1022-rdk.o
# Freescale PowerPC SSI/DMA Platform Support
snd-soc-fsl-ssi-objs := fsl_ssi.o
+snd-soc-fsl-spdif-objs := fsl_spdif.o
snd-soc-fsl-utils-objs := fsl_utils.o
snd-soc-fsl-dma-objs := fsl_dma.o
obj-$(CONFIG_SND_SOC_FSL_SSI) += snd-soc-fsl-ssi.o
+obj-$(CONFIG_SND_SOC_FSL_SPDIF) += snd-soc-fsl-spdif.o
obj-$(CONFIG_SND_SOC_FSL_UTILS) += snd-soc-fsl-utils.o
obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
new file mode 100644
index 0000000..8865499
--- /dev/null
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -0,0 +1,1311 @@
+/*
+ * Freescale S/PDIF ALSA SoC Digital Audio Interface (DAI) driver
+ *
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * Based on stmp3xxx_spdif_dai.c
+ * Vladimir Barinov <vbarinov at embeddedalley.com>
+ * Copyright 2008 SigmaTel, Inc
+ * Copyright 2008 Embedded Alley Solutions, 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/module.h>
+#include <linux/clk.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+
+#include <sound/asoundef.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+#include "fsl_spdif.h"
+#include "imx-pcm.h"
+
+#define FSL_SPDIF_TXFIFO_WML 0x8
+#define FSL_SPDIF_RXFIFO_WML 0x8
+
+#define INTR_FOR_PLAYBACK (INT_TXFIFO_RESYNC)
+#define INTR_FOR_CAPTURE (INT_SYM_ERR | INT_BIT_ERR | INT_URX_FUL | INT_URX_OV|\
+ INT_QRX_FUL | INT_QRX_OV | INT_UQ_SYNC | INT_UQ_ERR |\
+ INT_RXFIFO_RESYNC | INT_LOSS_LOCK | INT_DPLL_LOCKED)
+
+enum fsl_spdif_type {
+ FSL_IMX6Q_SPDIF,
+ FSL_IMX6SL_SPDIF,
+};
+
+static struct platform_device_id fsl_spdif_devtype[] = {
+ {
+ .name = "imx6q-spdif",
+ .driver_data = FSL_IMX6Q_SPDIF,
+ },
+ {
+ .name = "imx6sl-spdif",
+ .driver_data = FSL_IMX6SL_SPDIF,
+ },
+};
+MODULE_DEVICE_TABLE(platform, fsl_spdif_devtype);
+
+static const struct of_device_id fsl_spdif_dt_ids[] = {
+ { .compatible = "fsl,fsl-spdif", .data = &fsl_spdif_devtype[FSL_IMX6Q_SPDIF], },
+ { .compatible = "fsl,imx6q-spdif", .data = &fsl_spdif_devtype[FSL_IMX6Q_SPDIF], },
+ { .compatible = "fsl,imx6dl-spdif", .data = &fsl_spdif_devtype[FSL_IMX6Q_SPDIF], },
+ { .compatible = "fsl,imx6sl-spdif", .data = &fsl_spdif_devtype[FSL_IMX6SL_SPDIF], },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_spdif_dt_ids);
+
+/* spdif_devtype indicates which module version is being used */
+static u8 spdif_devtype;
+
+/*
+ * SPDIF control structure
+ * Defines channel status, subcode and Q sub
+ */
+struct spdif_mixer_control {
+ /* spinlock to access control data */
+ spinlock_t ctl_lock;
+
+ /* IEC958 channel tx status bit */
+ unsigned char ch_status[4];
+
+ /* User bits */
+ unsigned char subcode[2 * SPDIF_UBITS_SIZE];
+
+ /* Q subcode part of user bits */
+ unsigned char qsub[2 * SPDIF_QSUB_SIZE];
+
+ /* buffer ptrs for writer */
+ u32 upos;
+ u32 qpos;
+
+ /* ready buffer index of the two buffers */
+ u32 ready_buf;
+};
+
+struct fsl_spdif_priv {
+ struct spdif_mixer_control fsl_spdif_control;
+ struct snd_soc_dai_driver cpu_dai_drv;
+ struct reg_spdif __iomem *spdif;
+ struct platform_device *pdev;
+ dma_addr_t spdif_phys;
+ atomic_t dpll_locked;
+ u32 irq;
+ u8 rxclk_src;
+ u8 txclk_src;
+ u8 txclk_div[SPDIF_TXRATE_MAX];
+ struct clk *txclk;
+ struct clk *coreclk;
+ struct snd_dmaengine_dai_dma_data dma_params_tx;
+ struct snd_dmaengine_dai_dma_data dma_params_rx;
+
+ char name[1];
+};
+
+
+/* All the registers of SPDIF are 24-bit implemented */
+static u32 spdif_read(u32 __iomem *addr)
+{
+ return __raw_readl(addr) & 0xffffff;
+}
+
+static void spdif_write(u32 __iomem *addr, u32 val)
+{
+ __raw_writel(val & 0xffffff, addr);
+}
+
+static void spdif_setbits(u32 __iomem *addr, u32 bits)
+{
+ u32 val;
+
+ val = spdif_read(addr);
+ val |= bits;
+ spdif_write(addr, val);
+}
+
+static void spdif_clrbits(u32 __iomem *addr, u32 bits)
+{
+ u32 val;
+
+ val = spdif_read(addr);
+ val &= ~bits;
+ spdif_write(addr, val);
+}
+
+static void spdif_setmask(u32 __iomem *addr, u32 mask, u32 bits)
+{
+ u32 val;
+
+ val = spdif_read(addr);
+ val = (val & ~mask) | (bits & mask);
+ spdif_write(addr, val);
+}
+
+#ifdef DEBUG
+static void dumpregs(struct fsl_spdif_priv *spdif_priv)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 val, i;
+
+ clk_enable(spdif_priv->coreclk);
+
+ /* Valid address set of SPDIF is {[0x0-0x38], 0x44, 0x50} */
+ for (i = 0 ; i <= 0x38 ; i += 4) {
+ val = spdif_read(&spdif->scr + i / 4);
+ dev_dbg(&pdev->dev, "REG 0x%02x = 0x%06x\n", i, val);
+ }
+
+ i = 0x44;
+ val = spdif_read(&spdif->scr + i / 4) & 0xffffff;
+ dev_dbg(&pdev->dev, "REG 0x%02x = 0x%06x\n", i, val);
+
+ i = 0x50;
+ val = spdif_read(&spdif->scr + i / 4) & 0xffffff;
+ dev_dbg(&pdev->dev, "REG 0x%02x = 0x%06x\n", i, val);
+
+ clk_disable(spdif_priv->coreclk);
+}
+#else
+static void dumpregs(struct fsl_spdif_priv *spdif_priv) {}
+#endif
+
+
+/* DPLL locked and lock loss interrupt handler */
+static void spdif_irq_dpll_lock(struct fsl_spdif_priv *spdif_priv)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 locked = spdif_read(&spdif->srpc) & SRPC_DPLL_LOCKED;
+
+ dev_dbg(&pdev->dev, "isr: Rx dpll %s \n",
+ locked ? "locked" : "loss lock");
+
+ atomic_set(&spdif_priv->dpll_locked, locked ? 1 : 0);
+}
+
+/* Receiver found illegal symbol interrupt handler */
+static void spdif_irq_sym_error(struct fsl_spdif_priv *spdif_priv)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+
+ dev_dbg(&pdev->dev, "isr: receiver found illegal symbol\n");
+
+ if (!atomic_read(&spdif_priv->dpll_locked)) {
+ /* dpll unlocked seems no audio stream */
+ spdif_clrbits(&spdif->sie, INT_SYM_ERR);
+ }
+}
+
+/* U/Q Channel receive register full */
+static void spdif_irq_uqrx_full(struct fsl_spdif_priv *spdif_priv, char name)
+{
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 *pos, size, val;
+ u32 __iomem *reg;
+
+ switch (name) {
+ case 'U':
+ pos = &ctrl->upos;
+ size = SPDIF_UBITS_SIZE;
+ reg = &spdif->sru;
+ break;
+ case 'Q':
+ pos = &ctrl->qpos;
+ size = SPDIF_QSUB_SIZE;
+ reg = &spdif->srq;
+ break;
+ default:
+ return;
+ }
+
+ dev_dbg(&pdev->dev, "isr: %c Channel receive register full\n", name);
+
+ if (*pos >= size * 2) {
+ *pos = 0;
+ } else if (unlikely((*pos % size) + 3 > size)) {
+ dev_err(&pdev->dev, "User bit receivce buffer overflow\n");
+ return;
+ }
+
+ val = spdif_read(reg);
+ ctrl->subcode[*pos++] = val >> 16;
+ ctrl->subcode[*pos++] = val >> 8;
+ ctrl->subcode[*pos++] = val;
+}
+
+/* U/Q Channel sync found */
+static void spdif_irq_uq_sync(struct fsl_spdif_priv *spdif_priv)
+{
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct platform_device *pdev = spdif_priv->pdev;
+
+ dev_dbg(&pdev->dev, "isr: U/Q Channel sync found\n");
+
+ /* U/Q buffer reset */
+ if (ctrl->qpos == 0)
+ return;
+
+ /* set ready to this buffer */
+ ctrl->ready_buf = (ctrl->qpos - 1) / SPDIF_QSUB_SIZE + 1;
+}
+
+/* U/Q Channel framing error */
+static void spdif_irq_uq_err(struct fsl_spdif_priv *spdif_priv)
+{
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 val;
+
+ dev_dbg(&pdev->dev, "isr: U/Q Channel framing error\n");
+
+ /* read U/Q data and do buffer reset */
+ val = spdif_read(&spdif->sru);
+ val = spdif_read(&spdif->srq);
+
+ /* drop this U/Q buffer */
+ ctrl->ready_buf = 0;
+ ctrl->upos = 0;
+ ctrl->qpos = 0;
+}
+
+/* Get spdif interrupt status and clear the interrupt */
+static u32 spdif_intr_status_clear(struct fsl_spdif_priv *spdif_priv)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 val = spdif_read(&spdif->sisc);
+
+ val &= spdif_read(&spdif->sie);
+ spdif_write(&spdif->sisc, val);
+
+ return val;
+}
+
+static irqreturn_t spdif_isr(int irq, void *devid)
+{
+ struct fsl_spdif_priv *spdif_priv = (struct fsl_spdif_priv *)devid;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 sis;
+
+ sis = spdif_intr_status_clear(spdif_priv);
+
+ if (sis & INT_DPLL_LOCKED)
+ spdif_irq_dpll_lock(spdif_priv);
+
+ if (sis & INT_TXFIFO_UNOV)
+ dev_dbg(&pdev->dev, "isr: Tx FIFO under/overrun\n");
+
+ if (sis & INT_TXFIFO_RESYNC)
+ dev_dbg(&pdev->dev, "isr: Tx FIFO resync\n");
+
+ if (sis & INT_CNEW)
+ dev_dbg(&pdev->dev, "isr: cstatus new\n");
+
+ if (sis & INT_VAL_NOGOOD)
+ dev_dbg(&pdev->dev, "isr: validity flag no good\n");
+
+ if (sis & INT_SYM_ERR)
+ spdif_irq_sym_error(spdif_priv);
+
+ if (sis & INT_BIT_ERR)
+ dev_dbg(&pdev->dev, "isr: receiver found parity bit error\n");
+
+ if (sis & INT_URX_FUL)
+ spdif_irq_uqrx_full(spdif_priv, 'U');
+
+ if (sis & INT_URX_OV)
+ dev_dbg(&pdev->dev, "isr: U Channel receive register overrun\n");
+
+ if (sis & INT_QRX_FUL)
+ spdif_irq_uqrx_full(spdif_priv, 'Q');
+
+ if (sis & INT_QRX_OV)
+ dev_dbg(&pdev->dev, "isr: Q Channel receive register overrun\n");
+
+ if (sis & INT_UQ_SYNC)
+ spdif_irq_uq_sync(spdif_priv);
+
+ if (sis & INT_UQ_ERR)
+ spdif_irq_uq_err(spdif_priv);
+
+ if (sis & INT_RXFIFO_UNOV)
+ dev_dbg(&pdev->dev, "isr: Rx FIFO under/overrun\n");
+
+ if (sis & INT_RXFIFO_RESYNC)
+ dev_dbg(&pdev->dev, "isr: Rx FIFO resync\n");
+
+ if (sis & INT_LOSS_LOCK)
+ spdif_irq_dpll_lock(spdif_priv);
+
+ /* FIXME: Write Tx FIFO to clear TxEm */
+ if (sis & INT_TX_EM)
+ dev_dbg(&pdev->dev, "isr: Tx FIFO empty\n");
+
+ /* FIXME: Read Rx FIFO to clear RxFIFOFul */
+ if (sis & INT_RXFIFO_FUL)
+ dev_dbg(&pdev->dev, "isr: Rx FIFO full\n");
+
+ return IRQ_HANDLED;
+}
+
+static void spdif_softreset(struct fsl_spdif_priv *spdif_priv)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ int cycle = 1000;
+
+ spdif_write(&spdif->scr, SCR_SOFT_RESET);
+
+ /* RESET bit would be cleared after finishing its reset procedure */
+ while ((spdif_read(&spdif->scr) & SCR_SOFT_RESET) && cycle--);
+}
+
+static void spdif_set_cstatus(struct spdif_mixer_control *ctrl,
+ u8 mask, u8 cstatus)
+{
+ ctrl->ch_status[3] &= ~mask;
+ ctrl->ch_status[3] |= cstatus & mask;
+}
+
+static u8 reverse_bits(u8 input)
+{
+ u8 i, output = 0;
+
+ for (i = 8 ; i > 0 ; i--) {
+ output <<= 1;
+ output |= input & 0x01;
+ input >>= 1;
+ }
+
+ return output;
+}
+
+static void spdif_write_channel_status(struct fsl_spdif_priv *spdif_priv)
+{
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 ch_status;
+
+ ch_status = (reverse_bits(ctrl->ch_status[0]) << 16) |
+ (reverse_bits(ctrl->ch_status[1]) << 8) |
+ reverse_bits(ctrl->ch_status[2]);
+ spdif_write(&spdif->stcsch, ch_status);
+
+ ch_status = reverse_bits(ctrl->ch_status[3]) << 16;
+ spdif_write(&spdif->stcscl, ch_status);
+
+ dev_dbg(&pdev->dev, "STCSCH: 0x%06x\n", spdif_read(&spdif->stcsch));
+ dev_dbg(&pdev->dev, "STCSCL: 0x%06x\n", spdif_read(&spdif->stcscl));
+}
+
+/*
+ * Check if the clock source setting cares about DPLL Locked condition
+ *
+ * The DPLL locked condition should depend on SoC design, being different
+ * between different spdif_devtype.
+ */
+static inline bool spdif_rxclk_lock_check(enum spdif_rxclk_src clksrc) {
+
+ switch (spdif_devtype) {
+ case FSL_IMX6Q_SPDIF:
+ if (clksrc <= SRPC_CLKSRC_4)
+ return true;
+ else if (clksrc <= SRPC_CLKSRC_9)
+ return false;
+ else if (clksrc <= SRPC_CLKSRC_11)
+ return true;
+ else
+ return false;
+ break;
+ case FSL_IMX6SL_SPDIF:
+ if (clksrc <= SRPC_CLKSRC_3)
+ return true;
+ else
+ return false;
+ break;
+ default:
+ return false;
+ }
+}
+
+/* Set SPDIF PhaseConfig register for rx clock */
+static int spdif_set_rx_clksrc(struct fsl_spdif_priv *spdif_priv,
+ enum spdif_gainsel gainsel, int dpll_locked)
+{
+ enum spdif_rxclk_src clksrc = spdif_priv->rxclk_src;
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+
+ if (clksrc >= SRPC_CLKSRC_MAX || gainsel >= GAINSEL_MULTI_MAX)
+ return -EINVAL;
+
+ if (!dpll_locked && spdif_rxclk_lock_check(clksrc))
+ clksrc += SRPC_CLKSRC_SEL_LOCKED;
+
+ spdif_setmask(&spdif->srpc, SRPC_CLKSRC_SEL_MASK | SRPC_GAINSEL_MASK,
+ SRPC_CLKSRC_SEL_SET(clksrc) | SRPC_GAINSEL_SET(gainsel));
+
+ return 0;
+}
+
+static int spdif_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ unsigned long rate_actual;
+
+ rate_actual = clk_round_rate(clk, rate);
+ clk_set_rate(clk, rate_actual);
+
+ return 0;
+}
+
+static int spdif_set_sample_rate(struct snd_pcm_substream *substream,
+ int sample_rate)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ unsigned long clk = -1, div = 1, csfs = 0;
+ u32 stc, mask;
+
+ switch (sample_rate) {
+ case 32000:
+ clk = spdif_priv->txclk_src;
+ div = spdif_priv->txclk_div[SPDIF_TXRATE_32000];
+ csfs = IEC958_AES3_CON_FS_32000;
+ break;
+ case 44100:
+ clk = spdif_priv->txclk_src;
+ div = spdif_priv->txclk_div[SPDIF_TXRATE_44100];
+ csfs = IEC958_AES3_CON_FS_44100;
+ break;
+ case 48000:
+ clk = spdif_priv->txclk_src;
+ div = spdif_priv->txclk_div[SPDIF_TXRATE_48000];
+ csfs = IEC958_AES3_CON_FS_48000;
+ break;
+ default:
+ dev_err(&pdev->dev, "unsupported samplerate %d\n", sample_rate);
+ return -EINVAL;
+ }
+
+ if (clk < 0) {
+ dev_err(&pdev->dev, "no defined %d clk src\n", sample_rate);
+ return -EINVAL;
+ }
+
+ /*
+ * The S/PDIF block needs a clock of 64 * fs * div. The S/PDIF block
+ * will divide by (div). So request 64 * fs * (div+1) which will
+ * get rounded.
+ */
+ spdif_clk_set_rate(spdif_priv->txclk, 64 * sample_rate * (div + 1));
+
+ dev_dbg(&pdev->dev, "expected clock rate = %d\n",
+ (int)(64 * sample_rate * div));
+ dev_dbg(&pdev->dev, "acutal clock rate = %d\n",
+ (int)clk_get_rate(spdif_priv->txclk));
+
+ /* set fs field in consumer channel status */
+ spdif_set_cstatus(ctrl, IEC958_AES3_CON_FS, csfs);
+
+ /* select clock source and divisor */
+ stc = STC_TXCLK_ALL_EN | STC_TXCLK_SRC_SET(clk) | STC_TXCLK_DIV(div);
+ mask = STC_TXCLK_ALL_EN_MASK | STC_TXCLK_SRC_MASK | STC_TXCLK_DIV_MASK;
+ spdif_setmask(&spdif->stc, mask, stc);
+
+ dev_dbg(&pdev->dev, "set sample rate to %d\n", sample_rate);
+
+ return 0;
+}
+
+int fsl_spdif_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 scr, mask;
+
+ clk_enable(spdif_priv->coreclk);
+ clk_enable(spdif_priv->txclk);
+
+ /* Reset module and interrupts only for first initialization */
+ if (!cpu_dai->active) {
+ spdif_softreset(spdif_priv);
+
+ /* disable all the interrupts */
+ spdif_clrbits(&spdif->sie, 0xffffff);
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ scr = SCR_TXFIFO_AUTOSYNC | SCR_TXFIFO_CTRL_NORMAL |
+ SCR_TXSEL_NORMAL | SCR_USRC_SEL_CHIP |
+ SCR_TXFIFO_FSEL_IF8;
+ mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK |
+ SCR_TXSEL_MASK | SCR_USRC_SEL_MASK |
+ SCR_TXFIFO_FSEL_MASK;
+ } else {
+ scr = SCR_RXFIFO_FSEL_IF8 | SCR_RXFIFO_AUTOSYNC;
+ mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK|
+ SCR_RXFIFO_CTL_MASK | SCR_RXFIFO_OFF_MASK;
+ }
+ spdif_setmask(&spdif->scr, mask, scr);
+
+ /* Power up SPDIF module */
+ spdif_clrbits(&spdif->scr, SCR_LOW_POWER);
+
+ return 0;
+}
+
+static void fsl_spdif_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 scr, mask;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ scr = 0;
+ mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK |
+ SCR_TXSEL_MASK | SCR_USRC_SEL_MASK |
+ SCR_TXFIFO_FSEL_MASK;
+ } else {
+ scr = SCR_RXFIFO_OFF | SCR_RXFIFO_CTL_ZERO;
+ mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK|
+ SCR_RXFIFO_CTL_MASK | SCR_RXFIFO_OFF_MASK;
+ }
+ spdif_setmask(&spdif->scr, mask, scr);
+
+ /* Power down SPDIF module only if tx&rx are both inactive */
+ if (!cpu_dai->active) {
+ spdif_intr_status_clear(spdif_priv);
+ spdif_setbits(&spdif->scr, SCR_LOW_POWER);
+ }
+
+ /* disable spdif clock */
+ clk_disable(spdif_priv->txclk);
+ clk_disable(spdif_priv->coreclk);
+}
+
+static int fsl_spdif_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u32 sample_rate = params_rate(params);
+ int ret = 0;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ ret = spdif_set_sample_rate(substream, sample_rate);
+ if (ret) {
+ dev_err(&pdev->dev, "%s: set sample rate failed: %d\n",
+ __func__, sample_rate);
+ return ret;
+ }
+ spdif_set_cstatus(ctrl, IEC958_AES3_CON_CLOCK,
+ IEC958_AES3_CON_CLOCK_1000PPM);
+ spdif_write_channel_status(spdif_priv);
+ } else {
+ /* setup rx clock source */
+ ret = spdif_set_rx_clksrc(spdif_priv, SPDIF_DEFAULT_GAINSEL, 1);
+ }
+
+ return ret;
+}
+
+static int fsl_spdif_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ int is_playack = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
+ u32 intr = is_playack ? INTR_FOR_PLAYBACK : INTR_FOR_CAPTURE;
+ u32 dmaen = is_playack ? SCR_DMA_TX_EN : SCR_DMA_RX_EN;;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ spdif_setbits(&spdif->sie, intr);
+ spdif_setbits(&spdif->scr, dmaen);
+ dumpregs(spdif_priv);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ spdif_clrbits(&spdif->scr, dmaen);
+ spdif_clrbits(&spdif->sie, intr);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct snd_soc_dai_ops fsl_spdif_dai_ops = {
+ .startup = fsl_spdif_startup,
+ .hw_params = fsl_spdif_hw_params,
+ .trigger = fsl_spdif_trigger,
+ .shutdown = fsl_spdif_shutdown,
+};
+
+
+/*
+ * ============================================
+ * FSL SPDIF IEC958 controller(mixer) functions
+ *
+ * Channel status get/put control
+ * User bit value get/put control
+ * Valid bit value get control
+ * DPLL lock status get control
+ * User bit sync mode selection control
+ * ============================================
+ */
+
+static int fsl_spdif_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+ uinfo->count = 1;
+
+ return 0;
+}
+
+static int fsl_spdif_pb_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *uvalue)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+
+ uvalue->value.iec958.status[0] = ctrl->ch_status[0];
+ uvalue->value.iec958.status[1] = ctrl->ch_status[1];
+ uvalue->value.iec958.status[2] = ctrl->ch_status[2];
+ uvalue->value.iec958.status[3] = ctrl->ch_status[3];
+
+ return 0;
+}
+
+static int fsl_spdif_pb_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *uvalue)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+
+ ctrl->ch_status[0] = uvalue->value.iec958.status[0];
+ ctrl->ch_status[1] = uvalue->value.iec958.status[1];
+ ctrl->ch_status[2] = uvalue->value.iec958.status[2];
+ ctrl->ch_status[3] = uvalue->value.iec958.status[3];
+
+ clk_enable(spdif_priv->coreclk);
+
+ spdif_write_channel_status(spdif_priv);
+
+ clk_disable(spdif_priv->coreclk);
+
+ return 0;
+}
+
+/* Get channel status from SPDIF_RX_CCHAN register */
+static int fsl_spdif_capture_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 cstatus;
+
+ clk_enable(spdif_priv->coreclk);
+
+ if (!(spdif_read(&spdif->sisc) & INT_CNEW)) {
+ clk_disable(spdif_priv->coreclk);
+ return -EAGAIN;
+ }
+
+ cstatus = spdif_read(&spdif->srcsch);
+ ucontrol->value.iec958.status[0] = (cstatus >> 16) & 0xFF;
+ ucontrol->value.iec958.status[1] = (cstatus >> 8) & 0xFF;
+ ucontrol->value.iec958.status[2] = cstatus & 0xFF;
+
+ cstatus = spdif_read(&spdif->srcscl);
+ ucontrol->value.iec958.status[3] = (cstatus >> 16) & 0xFF;
+ ucontrol->value.iec958.status[4] = (cstatus >> 8) & 0xFF;
+ ucontrol->value.iec958.status[5] = cstatus & 0xFF;
+
+ /* clear intr */
+ spdif_write(&spdif->sisc, INT_CNEW);
+
+ clk_disable(spdif_priv->coreclk);
+
+ return 0;
+}
+
+/*
+ * Get User bits (subcode) from chip value which readed out
+ * in UChannel register.
+ */
+static int fsl_spdif_subcode_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&ctrl->ctl_lock, flags);
+ if (ctrl->ready_buf) {
+ int idx = (ctrl->ready_buf - 1) * SPDIF_UBITS_SIZE;
+ memcpy(&ucontrol->value.iec958.subcode[0],
+ &ctrl->subcode[idx], SPDIF_UBITS_SIZE);
+ } else {
+ ret = -EAGAIN;
+ }
+ spin_unlock_irqrestore(&ctrl->ctl_lock, flags);
+
+ return ret;
+}
+
+/* Q-subcode infomation. The byte size is SPDIF_UBITS_SIZE/8 */
+static int fsl_spdif_qinfo(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+ uinfo->count = SPDIF_QSUB_SIZE;
+
+ return 0;
+}
+
+/* Get Q subcode from chip value which readed out in QChannel register */
+static int fsl_spdif_qget(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&ctrl->ctl_lock, flags);
+ if (ctrl->ready_buf) {
+ int idx = (ctrl->ready_buf - 1) * SPDIF_QSUB_SIZE;
+ memcpy(&ucontrol->value.bytes.data[0],
+ &ctrl->qsub[idx], SPDIF_QSUB_SIZE);
+ } else {
+ ret = -EAGAIN;
+ }
+ spin_unlock_irqrestore(&ctrl->ctl_lock, flags);
+
+ return ret;
+}
+
+/* Valid bit infomation */
+static int fsl_spdif_vbit_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+
+ return 0;
+}
+
+/* Get valid good bit from interrupt status register */
+static int fsl_spdif_vbit_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 int_val;
+
+ clk_enable(spdif_priv->coreclk);
+
+ int_val = spdif_read(&spdif->sisc);
+ ucontrol->value.integer.value[0] = (int_val & INT_VAL_NOGOOD) != 0;
+ spdif_write(&spdif->sisc, INT_VAL_NOGOOD);
+
+ clk_disable(spdif_priv->coreclk);
+
+ return 0;
+}
+
+/* DPLL lock infomation */
+static int fsl_spdif_rxrate_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 16000;
+ uinfo->value.integer.max = 96000;
+
+ return 0;
+}
+
+static u32 gainsel_multi[GAINSEL_MULTI_MAX] = {
+ 24, 16, 12, 8, 6, 4, 3,
+};
+
+/* Get RX data clock rate given the SPDIF bus_clk */
+static int spdif_get_rxclk_rate(struct fsl_spdif_priv *spdif_priv,
+ enum spdif_gainsel gainsel)
+{
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ struct platform_device *pdev = spdif_priv->pdev;
+ u64 tmpval64, freqmeas, phaseconf, busclk_freq = 0;
+ enum spdif_rxclk_src clksrc;
+
+ clk_enable(spdif_priv->coreclk);
+
+ freqmeas = spdif_read(&spdif->srfm);
+ phaseconf = spdif_read(&spdif->srpc);
+
+ clksrc = (phaseconf >> SRPC_CLKSRC_SEL_OFFSET) & 0xf;
+ if (spdif_rxclk_lock_check(clksrc) && (phaseconf & SRPC_DPLL_LOCKED)) {
+ /* get bus clock from system */
+ busclk_freq = clk_get_rate(spdif_priv->coreclk);
+ }
+
+ /* FreqMeas_CLK = (BUS_CLK * FreqMeas) / 2 ^ 10 / GAINSEL / 128 */
+ tmpval64 = (u64) busclk_freq * freqmeas;
+ do_div(tmpval64, gainsel_multi[gainsel] * 1024);
+ do_div(tmpval64, 128 * 1024);
+
+ dev_dbg(&pdev->dev, "FreqMeas: %d\n", (int)freqmeas);
+ dev_dbg(&pdev->dev, "BusclkFreq: %d\n", (int)busclk_freq);
+ dev_dbg(&pdev->dev, "RxRate: %d\n", (int)tmpval64);
+
+ clk_disable(spdif_priv->coreclk);
+
+ return (int)tmpval64;
+}
+
+/*
+ * Get DPLL lock or not info from stable interrupt status register.
+ * User application must use this control to get locked,
+ * then can do next PCM operation
+ */
+static int fsl_spdif_rxrate_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ int rate = spdif_get_rxclk_rate(spdif_priv, SPDIF_DEFAULT_GAINSEL);
+
+ if (atomic_read(&spdif_priv->dpll_locked))
+ ucontrol->value.integer.value[0] = rate;
+ else
+ ucontrol->value.integer.value[0] = 0;
+
+ return 0;
+}
+
+/* User bit sync mode info */
+static int fsl_spdif_usync_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+
+ return 0;
+}
+
+/*
+ * User bit sync mode:
+ * 1 CD User channel subcode
+ * 0 Non-CD data
+ */
+static int fsl_spdif_usync_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 int_val;
+
+ clk_enable(spdif_priv->coreclk);
+
+ int_val = spdif_read(&spdif->srcd);
+ ucontrol->value.integer.value[0] = (int_val & SRCD_CD_USER) != 0;
+
+ clk_disable(spdif_priv->coreclk);
+
+ return 0;
+}
+
+/*
+ * User bit sync mode:
+ * 1 CD User channel subcode
+ * 0 Non-CD data
+ */
+static int fsl_spdif_usync_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+ struct reg_spdif __iomem *spdif = spdif_priv->spdif;
+ u32 int_val = ucontrol->value.integer.value[0] << SRCD_CD_USER_OFFSET;
+
+ clk_enable(spdif_priv->coreclk);
+
+ spdif_setmask(&spdif->srcd, SRCD_CD_USER, int_val);
+
+ clk_disable(spdif_priv->coreclk);
+
+ return 0;
+}
+
+/* FSL SPDIF IEC958 controller defines */
+static struct snd_kcontrol_new fsl_spdif_ctrls[] = {
+ /* status cchanel controller */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_info,
+ .get = fsl_spdif_pb_get,
+ .put = fsl_spdif_pb_put,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_info,
+ .get = fsl_spdif_capture_get,
+ },
+ /* user bits controller */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "IEC958 Subcode Capture Default",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_info,
+ .get = fsl_spdif_subcode_get,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "IEC958 Q-subcode Capture Default",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_qinfo,
+ .get = fsl_spdif_qget,
+ },
+ /* valid bit error controller */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "IEC958 V-Bit Errors",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_vbit_info,
+ .get = fsl_spdif_vbit_get,
+ },
+ /* DPLL lock info get controller */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "RX Sample Rate",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_rxrate_info,
+ .get = fsl_spdif_rxrate_get,
+ },
+ /* User bit sync mode set/get controller */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "IEC958 USyncMode CDText",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = fsl_spdif_usync_info,
+ .get = fsl_spdif_usync_get,
+ .put = fsl_spdif_usync_put,
+ },
+};
+
+static int fsl_spdif_dai_probe(struct snd_soc_dai *dai)
+{
+ struct fsl_spdif_priv *spdif_private = snd_soc_dai_get_drvdata(dai);
+
+ dai->playback_dma_data = &spdif_private->dma_params_tx;
+ dai->capture_dma_data = &spdif_private->dma_params_rx;
+
+ snd_soc_add_dai_controls(dai, fsl_spdif_ctrls, ARRAY_SIZE(fsl_spdif_ctrls));
+
+ return 0;
+}
+
+struct snd_soc_dai_driver fsl_spdif_dai = {
+ .probe = &fsl_spdif_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = FSL_SPDIF_RATES_PLAYBACK,
+ .formats = FSL_SPDIF_FORMATS_PLAYBACK,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = FSL_SPDIF_RATES_CAPTURE,
+ .formats = FSL_SPDIF_FORMATS_CAPTURE,
+ },
+ .ops = &fsl_spdif_dai_ops,
+};
+
+static const struct snd_soc_component_driver fsl_spdif_component = {
+ .name = "fsl-spdif",
+};
+
+static void spdif_clk_cal_txdiv(struct fsl_spdif_priv *spdif_priv)
+{
+ struct platform_device *pdev = spdif_priv->pdev;
+ struct clk *clk = spdif_priv->coreclk;
+ u64 rate_ideal, rate_actual, sub, savesub;
+ u32 i, div, arate, rate[] = {32000, 44100, 48000};
+
+ for (i = 0; i < SPDIF_TXRATE_MAX; i++, savesub = 100000) {
+ for (div = 1; div <= 128; div++) {
+ rate_ideal = rate[i] * (div + 1) * 64;
+ rate_actual = clk_round_rate(clk, rate_ideal);
+
+ arate = rate_actual / 64;
+ arate /= div;
+ if (arate == rate[i]) {
+ savesub = 0;
+ spdif_priv->txclk_div[i] = div;
+ break;
+ } else if (arate / rate[i] == 1) {
+ sub = (arate - rate[i]) * 100000;
+ do_div(sub, rate[i]);
+ if (sub < savesub) {
+ savesub = sub;
+ spdif_priv->txclk_div[i] = div;
+ }
+ } else if (rate[i] / arate == 1) {
+ sub = (rate[i] - arate) * 100000;
+ do_div(sub, rate[i]);
+ if (sub < savesub) {
+ savesub = sub;
+ spdif_priv->txclk_div[i] = div;
+ }
+ }
+ }
+ dev_dbg(&pdev->dev, "calculated %dHz div: %d\n",
+ rate[i], spdif_priv->txclk_div[i]);
+ }
+}
+
+static int fsl_spdif_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *of_id =
+ of_match_device(fsl_spdif_dt_ids, &pdev->dev);
+ struct fsl_spdif_priv *spdif_priv;
+ struct spdif_mixer_control *ctrl;
+ struct device_node *np = pdev->dev.of_node;
+ struct resource res;
+ const char *p;
+ int ret = 0;
+
+ if (!of_device_is_available(np))
+ return -ENODEV;
+
+ /* The DAI name is the last part of the full name of the node. */
+ p = strrchr(np->full_name, '/') + 1;
+ spdif_priv = devm_kzalloc(&pdev->dev,
+ sizeof(struct fsl_spdif_priv) + strlen(p), GFP_KERNEL);
+ if (!spdif_priv) {
+ dev_err(&pdev->dev, "could not allocate DAI object\n");
+ return -ENOMEM;
+ }
+
+ strcpy(spdif_priv->name, p);
+
+ spdif_priv->pdev = pdev;
+
+ if (of_id)
+ pdev->id_entry = of_id->data;
+ spdif_devtype = pdev->id_entry->driver_data;
+
+ /* Initialize this copy of the CPU DAI driver structure */
+ memcpy(&spdif_priv->cpu_dai_drv, &fsl_spdif_dai, sizeof(fsl_spdif_dai));
+ spdif_priv->cpu_dai_drv.name = spdif_priv->name;
+
+ /* Get the addresses and IRQ */
+ ret = of_address_to_resource(np, 0, &res);
+ if (ret) {
+ dev_err(&pdev->dev, "could not determine device resources\n");
+ return ret;
+ }
+
+ spdif_priv->spdif = of_iomap(np, 0);
+ if (!spdif_priv->spdif) {
+ dev_err(&pdev->dev, "could not map device resources\n");
+ return ret;
+ }
+ spdif_priv->spdif_phys = res.start;
+
+ spdif_priv->irq = irq_of_parse_and_map(np, 0);
+ if (spdif_priv->irq == NO_IRQ) {
+ dev_err(&pdev->dev, "no irq for node %s\n", np->full_name);
+ ret = -ENXIO;
+ goto error_iomap;
+ }
+
+ /* The 'name' should not have any slashes in it. */
+ ret = devm_request_irq(&pdev->dev, spdif_priv->irq, spdif_isr, 0,
+ spdif_priv->name, spdif_priv);
+ if (ret) {
+ dev_err(&pdev->dev, "could not claim irq %u\n", spdif_priv->irq);
+ goto error_irqmap;
+ }
+
+ spdif_priv->coreclk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(spdif_priv->coreclk)) {
+ ret = PTR_ERR(spdif_priv->coreclk);
+ dev_err(&pdev->dev, "failed to get clock: %d\n", ret);
+ goto error_irqmap;
+ }
+
+ clk_prepare(spdif_priv->coreclk);
+
+ spdif_priv->txclk = devm_clk_get(&pdev->dev, "tx");
+ if (IS_ERR(spdif_priv->txclk)) {
+ /* Use coreclk as default txclk */
+ spdif_priv->txclk = spdif_priv->coreclk;
+ dev_warn(&pdev->dev, "using core clock as tx clk\n");
+ } else {
+ clk_prepare(spdif_priv->txclk);
+ }
+
+ ret = of_property_read_u8(pdev->dev.of_node,
+ "rx-clk-source", &spdif_priv->rxclk_src);
+ if (ret) {
+ dev_warn(&pdev->dev, "using default rx-clk-source\n");
+ spdif_priv->rxclk_src = DEFAULT_RXCLK_SRC;
+ }
+
+ ret = of_property_read_u8(pdev->dev.of_node,
+ "tx-clk-source", &spdif_priv->txclk_src);
+ if (ret) {
+ dev_warn(&pdev->dev, "using default tx-clk-source\n");
+ spdif_priv->txclk_src = DEFAULT_TXCLK_SRC;
+ }
+
+ spdif_clk_cal_txdiv(spdif_priv);
+
+ ctrl = &spdif_priv->fsl_spdif_control;
+ /* initial spinlock for control data */
+ spin_lock_init(&ctrl->ctl_lock);
+
+ /* init tx channel status default value */
+ ctrl->ch_status[0] =
+ IEC958_AES0_CON_NOT_COPYRIGHT | IEC958_AES0_CON_EMPHASIS_5015;
+ ctrl->ch_status[1] = IEC958_AES1_CON_DIGDIGCONV_ID;
+ ctrl->ch_status[2] = 0x00;
+ ctrl->ch_status[3] =
+ IEC958_AES3_CON_FS_44100 | IEC958_AES3_CON_CLOCK_1000PPM;
+
+ atomic_set(&spdif_priv->dpll_locked, 0);
+
+ spdif_priv->dma_params_tx.maxburst = FSL_SPDIF_TXFIFO_WML;
+ spdif_priv->dma_params_rx.maxburst = FSL_SPDIF_RXFIFO_WML;
+ spdif_priv->dma_params_tx.addr =
+ spdif_priv->spdif_phys + offsetof(struct reg_spdif, stl);
+ spdif_priv->dma_params_rx.addr =
+ spdif_priv->spdif_phys + offsetof(struct reg_spdif, srl);
+
+ /* Register with ASoC */
+ dev_set_drvdata(&pdev->dev, spdif_priv);
+
+ ret = snd_soc_register_component(&pdev->dev, &fsl_spdif_component,
+ &spdif_priv->cpu_dai_drv, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register DAI: %d\n", ret);
+ goto error_dev;
+ }
+
+ ret = imx_pcm_dma_init(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "imx_pcm_dma_init failed: %d\n", ret);
+ goto error_component;
+ }
+
+ return ret;
+
+error_component:
+ snd_soc_unregister_component(&pdev->dev);
+error_dev:
+ dev_set_drvdata(&pdev->dev, NULL);
+ if (spdif_priv->txclk != spdif_priv->coreclk) {
+ clk_unprepare(spdif_priv->txclk);
+ clk_put(spdif_priv->txclk);
+ }
+ clk_unprepare(spdif_priv->coreclk);
+ clk_put(spdif_priv->coreclk);
+error_irqmap:
+ irq_dispose_mapping(spdif_priv->irq);
+error_iomap:
+ iounmap(spdif_priv->spdif);
+
+ return ret;
+}
+
+static int fsl_spdif_remove(struct platform_device *pdev)
+{
+ struct fsl_spdif_priv *spdif_priv = platform_get_drvdata(pdev);
+
+ imx_pcm_dma_exit(pdev);
+ snd_soc_unregister_component(&pdev->dev);
+
+ if (spdif_priv->txclk != spdif_priv->coreclk) {
+ clk_unprepare(spdif_priv->txclk);
+ clk_put(spdif_priv->txclk);
+ }
+ clk_unprepare(spdif_priv->coreclk);
+ clk_put(spdif_priv->coreclk);
+
+ irq_dispose_mapping(spdif_priv->irq);
+ iounmap(spdif_priv->spdif);
+
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver fsl_spdif_driver = {
+ .driver = {
+ .name = "fsl-spdif-dai",
+ .owner = THIS_MODULE,
+ .of_match_table = fsl_spdif_dt_ids,
+ },
+ .probe = fsl_spdif_probe,
+ .remove = fsl_spdif_remove,
+};
+
+module_platform_driver(fsl_spdif_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale S/PDIF CPU DAI Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:fsl_spdif");
diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h
new file mode 100644
index 0000000..de8b383
--- /dev/null
+++ b/sound/soc/fsl/fsl_spdif.h
@@ -0,0 +1,227 @@
+/*
+ * fsl_spdif.h - ALSA S/PDIF interface for the Freescale i.MX SoC
+ *
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * Author: Nicolin Chen <b42378 at freescale.com>
+ *
+ * Based on fsl_ssi.h
+ * Author: Timur Tabi <timur at freescale.com>
+ * Copyright 2007-2008 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.
+ */
+
+#ifndef _FSL_SPDIF_DAI_H
+#define _FSL_SPDIF_DAI_H
+
+/* S/PDIF Register Map */
+struct reg_spdif {
+ __le32 scr; /* 0x.0000 - SPDIF Configuration Register */
+ __le32 srcd; /* 0x.0004 - CDText Control Register */
+ __le32 srpc; /* 0x.0008 - PhaseConfig Register */
+ __le32 sie; /* 0x.000C - InterruptEn Register */
+ __le32 sisc; /* 0x.0010 - InterruptStat(R)/Clear(W) Register */
+ __le32 srl; /* 0x.0014 - SPDIFRxLeft Register */
+ __le32 srr; /* 0x.0018 - SPDIFRxRight Register */
+ __le32 srcsch; /* 0x.001C - SPDIFRxCChannel_h Register */
+ __le32 srcscl; /* 0x.0020 - SPDIFRxCChannel_l Register */
+ __le32 sru; /* 0x.0024 - UchannelRx Register */
+ __le32 srq; /* 0x.0028 - QchannelRx Register */
+ __le32 stl; /* 0x.002C - SPDIFTxLeft Register */
+ __le32 str; /* 0x.0030 - SPDIFTxRight Register */
+ __le32 stcsch; /* 0x.0034 - SPDIFTxCChannelCons_h Register */
+ __le32 stcscl; /* 0x.0038 - SPDIFTxCChannelCons_l Register */
+ __le32 null1; /* 0x.003C - N/A */
+ __le32 null2; /* 0x.0040 - N/A */
+ __le32 srfm; /* 0x.0044 - FreqMeas Register */
+ __le32 null3; /* 0x.0048 - N/A */
+ __le32 null4; /* 0x.004C - N/A */
+ __le32 stc; /* 0x.0050 - SPDIFTxClk Register */
+};
+
+/* SPDIF Configuration register */
+#define SCR_RXFIFO_CTL_OFFSET 23
+#define SCR_RXFIFO_CTL_MASK (1 << SCR_RXFIFO_CTL_OFFSET)
+#define SCR_RXFIFO_CTL_ZERO (1 << SCR_RXFIFO_CTL_OFFSET)
+#define SCR_RXFIFO_OFF_OFFSET 22
+#define SCR_RXFIFO_OFF_MASK (1 << SCR_RXFIFO_OFF_OFFSET)
+#define SCR_RXFIFO_OFF (1 << SCR_RXFIFO_OFF_OFFSET)
+#define SCR_RXFIFO_RST_OFFSET 21
+#define SCR_RXFIFO_RST_MASK (1 << SCR_RXFIFO_RST_OFFSET)
+#define SCR_RXFIFO_RST (1 << SCR_RXFIFO_RST_OFFSET)
+#define SCR_RXFIFO_FSEL_OFFSET 19
+#define SCR_RXFIFO_FSEL_MASK (0x3 << SCR_RXFIFO_FSEL_OFFSET)
+#define SCR_RXFIFO_FSEL_IF0 (0x0 << SCR_RXFIFO_FSEL_OFFSET)
+#define SCR_RXFIFO_FSEL_IF4 (0x1 << SCR_RXFIFO_FSEL_OFFSET)
+#define SCR_RXFIFO_FSEL_IF8 (0x2 << SCR_RXFIFO_FSEL_OFFSET)
+#define SCR_RXFIFO_FSEL_IF12 (0x3 << SCR_RXFIFO_FSEL_OFFSET)
+#define SCR_RXFIFO_AUTOSYNC_OFFSET 18
+#define SCR_RXFIFO_AUTOSYNC_MASK (1 << SCR_RXFIFO_AUTOSYNC_OFFSET)
+#define SCR_RXFIFO_AUTOSYNC (1 << SCR_RXFIFO_AUTOSYNC_OFFSET)
+#define SCR_TXFIFO_AUTOSYNC_OFFSET 17
+#define SCR_TXFIFO_AUTOSYNC_MASK (1 << SCR_TXFIFO_AUTOSYNC_OFFSET)
+#define SCR_TXFIFO_AUTOSYNC (1 << SCR_TXFIFO_AUTOSYNC_OFFSET)
+#define SCR_TXFIFO_FSEL_OFFSET 15
+#define SCR_TXFIFO_FSEL_MASK (0x3 << SCR_TXFIFO_FSEL_OFFSET)
+#define SCR_TXFIFO_FSEL_IF0 (0x0 << SCR_TXFIFO_FSEL_OFFSET)
+#define SCR_TXFIFO_FSEL_IF4 (0x1 << SCR_TXFIFO_FSEL_OFFSET)
+#define SCR_TXFIFO_FSEL_IF8 (0x2 << SCR_TXFIFO_FSEL_OFFSET)
+#define SCR_TXFIFO_FSEL_IF12 (0x3 << SCR_TXFIFO_FSEL_OFFSET)
+#define SCR_LOW_POWER (1 << 13)
+#define SCR_SOFT_RESET (1 << 12)
+#define SCR_TXFIFO_CTRL_OFFSET 10
+#define SCR_TXFIFO_CTRL_MASK (0x3 << SCR_TXFIFO_CTRL_OFFSET)
+#define SCR_TXFIFO_CTRL_ZERO (0x0 << SCR_TXFIFO_CTRL_OFFSET)
+#define SCR_TXFIFO_CTRL_NORMAL (0x1 << SCR_TXFIFO_CTRL_OFFSET)
+#define SCR_TXFIFO_CTRL_ONESAMPLE (0x2 << SCR_TXFIFO_CTRL_OFFSET)
+#define SCR_DMA_RX_EN_OFFSET 9
+#define SCR_DMA_RX_EN_MASK (1 << SCR_DMA_RX_EN_OFFSET)
+#define SCR_DMA_RX_EN (1 << SCR_DMA_RX_EN_OFFSET)
+#define SCR_DMA_TX_EN_OFFSET 8
+#define SCR_DMA_TX_EN_MASK (1 << SCR_DMA_TX_EN_OFFSET)
+#define SCR_DMA_TX_EN (1 << SCR_DMA_TX_EN_OFFSET)
+#define SCR_VAL_OFFSET 5
+#define SCR_VAL_MASK (1 << SCR_VAL_OFFSET)
+#define SCR_VAL_CLEAR (1 << SCR_VAL_OFFSET)
+#define SCR_TXSEL_OFFSET 2
+#define SCR_TXSEL_MASK (0x7 << SCR_TXSEL_OFFSET)
+#define SCR_TXSEL_OFF (0 << SCR_TXSEL_OFFSET)
+#define SCR_TXSEL_RX (1 << SCR_TXSEL_OFFSET)
+#define SCR_TXSEL_NORMAL (0x5 << SCR_TXSEL_OFFSET)
+#define SCR_USRC_SEL_OFFSET 0x0
+#define SCR_USRC_SEL_MASK (0x3 << SCR_USRC_SEL_OFFSET)
+#define SCR_USRC_SEL_NONE (0x0 << SCR_USRC_SEL_OFFSET)
+#define SCR_USRC_SEL_RECV (0x1 << SCR_USRC_SEL_OFFSET)
+#define SCR_USRC_SEL_CHIP (0x3 << SCR_USRC_SEL_OFFSET)
+
+/* SPDIF CDText control */
+#define SRCD_CD_USER_OFFSET 1
+#define SRCD_CD_USER (1 << SRCD_CD_USER_OFFSET)
+
+/* SPDIF Phase Configuration register */
+#define SRPC_DPLL_LOCKED (1 << 6)
+#define SRPC_CLKSRC_SEL_OFFSET 7
+#define SRPC_CLKSRC_SEL_MASK (0xf << SRPC_CLKSRC_SEL_OFFSET)
+#define SRPC_CLKSRC_SEL_SET(x) ((x << SRPC_CLKSRC_SEL_OFFSET) & SRPC_CLKSRC_SEL_MASK)
+#define SRPC_CLKSRC_SEL_LOCKED 5
+#define SRPC_GAINSEL_OFFSET 3
+#define SRPC_GAINSEL_MASK (0x7 << SRPC_GAINSEL_OFFSET)
+#define SRPC_GAINSEL_SET(x) ((x << SRPC_GAINSEL_OFFSET) & SRPC_GAINSEL_MASK)
+
+/* SPDIF rx clock source */
+enum spdif_rxclk_src {
+ SRPC_CLKSRC_0 = 0,
+ SRPC_CLKSRC_1,
+ SRPC_CLKSRC_2,
+ SRPC_CLKSRC_3,
+ SRPC_CLKSRC_4,
+ SRPC_CLKSRC_5,
+ SRPC_CLKSRC_6,
+ SRPC_CLKSRC_7,
+ SRPC_CLKSRC_8,
+ SRPC_CLKSRC_9,
+ SRPC_CLKSRC_10,
+ SRPC_CLKSRC_11,
+ SRPC_CLKSRC_12,
+ SRPC_CLKSRC_13,
+ SRPC_CLKSRC_14,
+ SRPC_CLKSRC_15,
+};
+#define SRPC_CLKSRC_MAX (SRPC_CLKSRC_15 + 1)
+#define DEFAULT_RXCLK_SRC SRPC_CLKSRC_0
+
+enum spdif_gainsel {
+ GAINSEL_MULTI_24 = 0,
+ GAINSEL_MULTI_16,
+ GAINSEL_MULTI_12,
+ GAINSEL_MULTI_8,
+ GAINSEL_MULTI_6,
+ GAINSEL_MULTI_4,
+ GAINSEL_MULTI_3,
+};
+#define GAINSEL_MULTI_MAX (GAINSEL_MULTI_3 + 1)
+#define SPDIF_DEFAULT_GAINSEL GAINSEL_MULTI_8
+
+/* SPDIF interrupt mask define */
+#define INT_DPLL_LOCKED (1 << 20)
+#define INT_TXFIFO_UNOV (1 << 19)
+#define INT_TXFIFO_RESYNC (1 << 18)
+#define INT_CNEW (1 << 17)
+#define INT_VAL_NOGOOD (1 << 16)
+#define INT_SYM_ERR (1 << 15)
+#define INT_BIT_ERR (1 << 14)
+#define INT_URX_FUL (1 << 10)
+#define INT_URX_OV (1 << 9)
+#define INT_QRX_FUL (1 << 8)
+#define INT_QRX_OV (1 << 7)
+#define INT_UQ_SYNC (1 << 6)
+#define INT_UQ_ERR (1 << 5)
+#define INT_RXFIFO_UNOV (1 << 4)
+#define INT_RXFIFO_RESYNC (1 << 3)
+#define INT_LOSS_LOCK (1 << 2)
+#define INT_TX_EM (1 << 1)
+#define INT_RXFIFO_FUL (1 << 0)
+
+/* SPDIF Clock register */
+#define STC_SYSCLK_DIV_OFFSET 11
+#define STC_SYSCLK_DIV_MASK (0x1ff << STC_TXCLK_SRC_OFFSET)
+#define STC_SYSCLK_DIV(x) ((((x) - 1) << STC_TXCLK_DIV_OFFSET) & STC_SYSCLK_DIV_MASK)
+#define STC_TXCLK_SRC_OFFSET 8
+#define STC_TXCLK_SRC_MASK (0x7 << STC_TXCLK_SRC_OFFSET)
+#define STC_TXCLK_SRC_SET(x) ((x << STC_TXCLK_SRC_OFFSET) & STC_TXCLK_SRC_MASK)
+#define STC_TXCLK_ALL_EN_OFFSET 7
+#define STC_TXCLK_ALL_EN_MASK (1 << STC_TXCLK_ALL_EN_OFFSET)
+#define STC_TXCLK_ALL_EN (1 << STC_TXCLK_ALL_EN_OFFSET)
+#define STC_TXCLK_DIV_OFFSET 0
+#define STC_TXCLK_DIV_MASK (0x7ff << STC_TXCLK_DIV_OFFSET)
+#define STC_TXCLK_DIV(x) ((((x) - 1) << STC_TXCLK_DIV_OFFSET) & STC_TXCLK_DIV_MASK)
+
+/* SPDIF tx clksrc */
+enum spdif_txclk_src {
+ STC_TXCLK_SRC_0 = 0,
+ STC_TXCLK_SRC_1,
+ STC_TXCLK_SRC_2,
+ STC_TXCLK_SRC_3,
+ STC_TXCLK_SRC_4,
+ STC_TXCLK_SRC_5,
+ STC_TXCLK_SRC_6,
+ STC_TXCLK_SRC_7,
+};
+#define STC_TXCLK_SRC_MAX (STC_TXCLK_SRC_7 + 1)
+#define DEFAULT_TXCLK_SRC STC_TXCLK_SRC_1
+
+/* SPDIF tx rate */
+enum spdif_txrate {
+ SPDIF_TXRATE_32000 = 0,
+ SPDIF_TXRATE_44100,
+ SPDIF_TXRATE_48000,
+};
+#define SPDIF_TXRATE_MAX (SPDIF_TXRATE_48000 + 1)
+
+
+#define SPDIF_CSTATUS_BYTE 6
+#define SPDIF_UBITS_SIZE 96
+#define SPDIF_QSUB_SIZE (SPDIF_UBITS_SIZE / 8)
+
+
+#define FSL_SPDIF_RATES_PLAYBACK (SNDRV_PCM_RATE_32000 | \
+ SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000)
+
+#define FSL_SPDIF_RATES_CAPTURE (SNDRV_PCM_RATE_16000 | \
+ SNDRV_PCM_RATE_32000 | \
+ SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | \
+ SNDRV_PCM_RATE_64000 | \
+ SNDRV_PCM_RATE_96000)
+
+#define FSL_SPDIF_FORMATS_PLAYBACK (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+#define FSL_SPDIF_FORMATS_CAPTURE (SNDRV_PCM_FMTBIT_S24_LE)
+
+#endif /* _FSL_SPDIF_DAI_H */
--
1.7.1
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