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-rw-r--r--Documentation/devicetree/bindings/sound/fsl-asoc-card.txt10
-rw-r--r--sound/soc/fsl/fsl-asoc-card.c140
2 files changed, 116 insertions, 34 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt
index a96774c194c8..ce55c0a6f757 100644
--- a/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt
+++ b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt
@@ -13,13 +13,15 @@ So having this generic sound card allows all Freescale SoC users to benefit
from the simplification of a new card support and the capability of the wide
sample rates support through ASRC.
-Note: The card is initially designed for those sound cards who use I2S and
- PCM DAI formats. However, it'll be also possible to support those non
- I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as long
- as the driver has been properly upgraded.
+Note: The card is initially designed for those sound cards who use AC'97, I2S
+ and PCM DAI formats. However, it'll be also possible to support those non
+ AC'97/I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as
+ long as the driver has been properly upgraded.
The compatible list for this generic sound card currently:
+ "fsl,imx-audio-ac97"
+
"fsl,imx-audio-cs42888"
"fsl,imx-audio-wm8962"
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index 5aeb6ed4827e..33628a09fcf5 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -14,6 +14,9 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of_platform.h>
+#if IS_ENABLED(CONFIG_SND_AC97_CODEC)
+#include <sound/ac97_codec.h>
+#endif
#include <sound/pcm_params.h>
#include <sound/soc.h>
@@ -115,6 +118,11 @@ static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
SND_SOC_DAPM_MIC("DMIC", NULL),
};
+static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
+{
+ return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
+}
+
static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
@@ -133,7 +141,9 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
* set_bias_level(), bypass the remaining settings in hw_params().
* Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS.
*/
- if (priv->card.set_bias_level && priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM)
+ if ((priv->card.set_bias_level &&
+ priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) ||
+ fsl_asoc_card_is_ac97(priv))
return 0;
/* Specific configurations of DAIs starts from here */
@@ -300,7 +310,7 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
ext_port--;
/*
- * Use asynchronous mode (6 wires) for all cases.
+ * Use asynchronous mode (6 wires) for all cases except AC97.
* If only 4 wires are needed, just set SSI into
* synchronous mode and enable 4 PADs in IOMUX.
*/
@@ -346,15 +356,30 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
IMX_AUDMUX_V2_PTCR_TCLKDIR;
break;
default:
- return -EINVAL;
+ if (!fsl_asoc_card_is_ac97(priv))
+ return -EINVAL;
+ }
+
+ if (fsl_asoc_card_is_ac97(priv)) {
+ int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
+ IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+ IMX_AUDMUX_V2_PTCR_TCLKDIR;
+ ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
+ IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
+ IMX_AUDMUX_V2_PTCR_TFSDIR;
}
/* Asynchronous mode can not be set along with RCLKDIR */
- ret = imx_audmux_v2_configure_port(int_port, 0,
- IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
- if (ret) {
- dev_err(dev, "audmux internal port setup failed\n");
- return ret;
+ if (!fsl_asoc_card_is_ac97(priv)) {
+ unsigned int pdcr =
+ IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
+
+ ret = imx_audmux_v2_configure_port(int_port, 0,
+ pdcr);
+ if (ret) {
+ dev_err(dev, "audmux internal port setup failed\n");
+ return ret;
+ }
}
ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
@@ -364,11 +389,16 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
return ret;
}
- ret = imx_audmux_v2_configure_port(ext_port, 0,
- IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
- if (ret) {
- dev_err(dev, "audmux external port setup failed\n");
- return ret;
+ if (!fsl_asoc_card_is_ac97(priv)) {
+ unsigned int pdcr =
+ IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
+
+ ret = imx_audmux_v2_configure_port(ext_port, 0,
+ pdcr);
+ if (ret) {
+ dev_err(dev, "audmux external port setup failed\n");
+ return ret;
+ }
}
ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
@@ -389,6 +419,23 @@ static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
struct device *dev = card->dev;
int ret;
+ if (fsl_asoc_card_is_ac97(priv)) {
+#if IS_ENABLED(CONFIG_SND_AC97_CODEC)
+ struct snd_soc_codec *codec = card->rtd[0].codec;
+ struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+
+ /*
+ * Use slots 3/4 for S/PDIF so SSI won't try to enable
+ * other slots and send some samples there
+ * due to SLOTREQ bits for S/PDIF received from codec
+ */
+ snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
+ AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
+#endif
+
+ return 0;
+ }
+
ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
if (ret) {
@@ -407,7 +454,6 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
struct platform_device *cpu_pdev;
struct fsl_asoc_card_priv *priv;
struct i2c_client *codec_dev;
- struct clk *codec_clk;
const char *codec_dai_name;
u32 width;
int ret;
@@ -420,9 +466,8 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
/* Give a chance to old DT binding */
if (!cpu_np)
cpu_np = of_parse_phandle(np, "ssi-controller", 0);
- codec_np = of_parse_phandle(np, "audio-codec", 0);
- if (!cpu_np || !codec_np) {
- dev_err(&pdev->dev, "phandle missing or invalid\n");
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
@@ -434,22 +479,24 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
goto fail;
}
- codec_dev = of_find_i2c_device_by_node(codec_np);
- if (!codec_dev) {
- dev_err(&pdev->dev, "failed to find codec platform device\n");
- ret = -EINVAL;
- goto fail;
- }
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+ if (codec_np)
+ codec_dev = of_find_i2c_device_by_node(codec_np);
+ else
+ codec_dev = NULL;
asrc_np = of_parse_phandle(np, "audio-asrc", 0);
if (asrc_np)
asrc_pdev = of_find_device_by_node(asrc_np);
/* Get the MCLK rate only, and leave it controlled by CODEC drivers */
- codec_clk = clk_get(&codec_dev->dev, NULL);
- if (!IS_ERR(codec_clk)) {
- priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
- clk_put(codec_clk);
+ if (codec_dev) {
+ struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
+
+ if (!IS_ERR(codec_clk)) {
+ priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
+ clk_put(codec_clk);
+ }
}
/* Default sample rate and format, will be updated in hw_params() */
@@ -486,11 +533,21 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
+ } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
+ codec_dai_name = "ac97-hifi";
+ priv->card.set_bias_level = NULL;
+ priv->dai_fmt = SND_SOC_DAIFMT_AC97;
} else {
dev_err(&pdev->dev, "unknown Device Tree compatible\n");
return -EINVAL;
}
+ if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
+ dev_err(&pdev->dev, "failed to find codec device\n");
+ ret = -EINVAL;
+ goto asrc_fail;
+ }
+
/* Common settings for corresponding Freescale CPU DAI driver */
if (strstr(cpu_np->name, "ssi")) {
/* Only SSI needs to configure AUDMUX */
@@ -507,7 +564,9 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
}
- sprintf(priv->name, "%s-audio", codec_dev->name);
+ snprintf(priv->name, sizeof(priv->name), "%s-audio",
+ fsl_asoc_card_is_ac97(priv) ? "ac97" :
+ codec_dev->name);
/* Initialize sound card */
priv->pdev = pdev;
@@ -531,8 +590,26 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
/* Normal DAI Link */
priv->dai_link[0].cpu_of_node = cpu_np;
- priv->dai_link[0].codec_of_node = codec_np;
priv->dai_link[0].codec_dai_name = codec_dai_name;
+
+ if (!fsl_asoc_card_is_ac97(priv))
+ priv->dai_link[0].codec_of_node = codec_np;
+ else {
+ u32 idx;
+
+ ret = of_property_read_u32(cpu_np, "cell-index", &idx);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "cannot get CPU index property\n");
+ goto asrc_fail;
+ }
+
+ priv->dai_link[0].codec_name =
+ devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "ac97-codec.%u",
+ (unsigned int)idx);
+ }
+
priv->dai_link[0].platform_of_node = cpu_np;
priv->dai_link[0].dai_fmt = priv->dai_fmt;
priv->card.num_links = 1;
@@ -543,6 +620,8 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->dai_link[1].platform_of_node = asrc_np;
priv->dai_link[2].codec_dai_name = codec_dai_name;
priv->dai_link[2].codec_of_node = codec_np;
+ priv->dai_link[2].codec_name =
+ priv->dai_link[0].codec_name;
priv->dai_link[2].cpu_of_node = cpu_np;
priv->dai_link[2].dai_fmt = priv->dai_fmt;
priv->card.num_links = 3;
@@ -578,14 +657,15 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
asrc_fail:
of_node_put(asrc_np);
-fail:
of_node_put(codec_np);
+fail:
of_node_put(cpu_np);
return ret;
}
static const struct of_device_id fsl_asoc_card_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-ac97", },
{ .compatible = "fsl,imx-audio-cs42888", },
{ .compatible = "fsl,imx-audio-sgtl5000", },
{ .compatible = "fsl,imx-audio-wm8962", },
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.