new file mode 100644
@@ -0,0 +1,23 @@
+Audio complex for Eukrea boards with tlv320aic23 codec.
+
+Required properties:
+- compatible : "eukrea,eukrea-tlv320"
+- model : The user-visible name of this sound complex.
+- ssi-controller : The phandle of the SSI controller.
+- audio-codec : The phandle of the tlv320aic23 audio codec.
+- mux-int-port : The internal port of the i.MX audio muxer (AUDMUX).
+- mux-ext-port : The external port of the i.MX audio muxer.
+
+Note: The AUDMUX port numbering should start at 1, which is consistent with
+hardware manual.
+
+Example:
+
+ sound {
+ compatible = "eukrea,eukrea-tlv320";
+ model = "imx51-eukrea-tlv320aic23";
+ ssi-controller = <&ssi2>;
+ fsl,audio-codec = <&tlv320aic23>;
+ mux-int-port = <2>;
+ mux-ext-port = <3>;
+ };
@@ -161,12 +161,15 @@ config SND_SOC_EUKREA_TLV320
depends on MACH_EUKREA_MBIMX27_BASEBOARD \
|| MACH_EUKREA_MBIMXSD25_BASEBOARD \
|| MACH_EUKREA_MBIMXSD35_BASEBOARD \
- || MACH_EUKREA_MBIMXSD51_BASEBOARD
+ || MACH_EUKREA_MBIMXSD51_BASEBOARD \
+ || OF
depends on I2C
select SND_SOC_TLV320AIC23
select SND_SOC_IMX_PCM_FIQ
select SND_SOC_IMX_AUDMUX
select SND_SOC_IMX_SSI
+ select SND_SOC_FSL_SSI
+ select SND_SOC_IMX_PCM_DMA
help
Enable I2S based access to the TLV320AIC23B codec attached
to the SSI interface
@@ -17,6 +17,8 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <sound/core.h>
@@ -26,24 +28,33 @@
#include "../codecs/tlv320aic23.h"
#include "imx-ssi.h"
+#include "fsl_ssi.h"
#include "imx-audmux.h"
#define CODEC_CLOCK 12000000
+struct eukrea_tlv320 {
+ char of;
+};
+
static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct eukrea_tlv320 *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret;
- ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBM_CFM);
- if (ret) {
- pr_err("%s: failed set cpu dai format\n", __func__);
- return ret;
+ /* fsl_ssi lacks the set_fmt ops. */
+ if (!priv->of) {
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM);
+ if (ret) {
+ pr_err("%s: failed set cpu dai format\n", __func__);
+ return ret;
+ }
}
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
@@ -60,15 +71,18 @@ static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
pr_err("%s: failed setting codec sysclk\n", __func__);
return ret;
}
- snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
- ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
- SND_SOC_CLOCK_IN);
- if (ret) {
- pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
- return ret;
- }
+ /* fsl_ssi lacks the set_sysclk ops */
+ if (!priv->of) {
+ snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
+ ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
+ SND_SOC_CLOCK_IN);
+ if (ret) {
+ pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
+ return ret;
+ }
+ }
return 0;
}
@@ -80,7 +94,6 @@ static struct snd_soc_dai_link eukrea_tlv320_dai = {
.name = "tlv320aic23",
.stream_name = "TLV320AIC23",
.codec_dai_name = "tlv320aic23-hifi",
- .platform_name = "imx-ssi.0",
.codec_name = "tlv320aic23-codec.0-001a",
.cpu_dai_name = "imx-ssi.0",
.ops = &eukrea_tlv320_snd_ops,
@@ -97,8 +110,56 @@ static int eukrea_tlv320_probe(struct platform_device *pdev)
{
int ret;
int int_port = 0, ext_port;
+ struct platform_device *ssi_pdev;
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *ssi_np;
+ struct eukrea_tlv320 *priv;
+
+ priv = devm_kzalloc(&pdev->dev,
+ sizeof(struct eukrea_tlv320), GFP_KERNEL);
+ if (priv == NULL)
+ return -ENOMEM;
+
+ if (np) {
+ ssi_np = of_parse_phandle(pdev->dev.of_node,
+ "ssi-controller", 0);
+ ssi_pdev = of_find_device_by_node(ssi_np);
+ if (!ssi_pdev) {
+ dev_err(&pdev->dev, "ssi-controller missing or "
+ "invalid.\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ ret = of_property_read_u32(np, "mux-int-port", &int_port);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "mux-int-port missing or invalid\n");
+ return ret;
+ }
+ ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "mux-ext-port missing or invalid\n");
+ return ret;
+ }
+
+ /*
+ * The port numbering in the hardware manual starts at 1, while
+ * the audmux API expects it starts at 0.
+ */
+ int_port--;
+ ext_port--;
+
+ eukrea_tlv320_dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
+ eukrea_tlv320_dai.platform_of_node = ssi_np;
+ priv->of = 1;
+ } else {
+ eukrea_tlv320_dai.platform_name = "imx-ssi.0";
+ }
- if (machine_is_eukrea_cpuimx27()) {
+ if (machine_is_eukrea_cpuimx27() ||
+ of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
IMX_AUDMUX_V1_PCR_SYN |
IMX_AUDMUX_V1_PCR_TFSDIR |
@@ -115,8 +176,12 @@ static int eukrea_tlv320_probe(struct platform_device *pdev)
);
} else if (machine_is_eukrea_cpuimx25sd() ||
machine_is_eukrea_cpuimx35sd() ||
- machine_is_eukrea_cpuimx51sd()) {
- ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
+ machine_is_eukrea_cpuimx51sd() ||
+ of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
+ if (!np)
+ ext_port = machine_is_eukrea_cpuimx25sd() ?
+ 4 : 3;
+
imx_audmux_v2_configure_port(int_port,
IMX_AUDMUX_V2_PTCR_SYN |
IMX_AUDMUX_V2_PTCR_TFSDIR |
@@ -130,14 +195,29 @@ static int eukrea_tlv320_probe(struct platform_device *pdev)
IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
);
} else {
- /* return happy. We might run on a totally different machine */
- return 0;
+ if (np) {
+ /* The eukrea,eukrea-tlv320 driver was explicitely
+ * requested (through the device tree).
+ */
+ dev_err(&pdev->dev,
+ "Missing audmux DT node.\n");
+ return -ENODEV;
+ } else {
+ /* Return happy.
+ * We might run on a totally different machine.
+ */
+ return 0;
+ }
}
eukrea_tlv320.dev = &pdev->dev;
+ snd_soc_card_set_drvdata(&eukrea_tlv320, priv);
ret = snd_soc_register_card(&eukrea_tlv320);
+err:
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ if (np)
+ of_node_put(ssi_np);
return ret;
}
@@ -149,10 +229,17 @@ static int eukrea_tlv320_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id imx_tlv320_dt_ids[] = {
+ { .compatible = "eukrea,eukrea-tlv320"},
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
+
static struct platform_driver eukrea_tlv320_driver = {
.driver = {
.name = "eukrea_tlv320",
.owner = THIS_MODULE,
+ .of_match_table = imx_tlv320_dt_ids,
},
.probe = eukrea_tlv320_probe,
.remove = eukrea_tlv320_remove,};
Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: devicetree@vger.kernel.org Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: alsa-devel@alsa-project.org Cc: Sascha Hauer <kernel@pengutronix.de> Cc: linux-arm-kernel@lists.infradead.org Cc: Eric Bénard <eric@eukrea.com> Signed-off-by: Denis Carikli <denis@eukrea.com> --- .../devicetree/bindings/sound/eukrea-tlv320.txt | 23 ++++ sound/soc/fsl/Kconfig | 5 +- sound/soc/fsl/eukrea-tlv320.c | 125 +++++++++++++++++--- 3 files changed, 133 insertions(+), 20 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/eukrea-tlv320.txt