ASoC: fsl: add imx-sgtl5000 machine driver

This is the initial imx-sgtl5000 machine driver support with only
playback dai link implemented.  More features can be added on top
of it later.

It's a device tree only machine driver working with fsl_ssi driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt b/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt
new file mode 100644 (file)
index 0000000..421a374
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt
@@ -0,0 +1,24 @@
+Freescale i.MX audio complex with SGTL5000 codec
+
+Required properties:
+- compatible : "fsl,imx-audio-sgtl5000"
+- model : The user-visible name of this sound complex
+- ssi-controller : The phandle of the i.MX SSI controller
+- audio-codec : The phandle of the SGTL5000 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 = "fsl,imx51-babbage-sgtl5000",
+                    "fsl,imx-audio-sgtl5000";
+       model = "imx51-babbage-sgtl5000";
+       ssi-controller = <&ssi1>;
+       audio-codec = <&sgtl5000>;
+       mux-int-port = <1>;
+       mux-ext-port = <3>;
+};

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 535ee73ecf1560dad6c3263ba26ccf292a5da92e..aa14fc9744cc3279a78c6619f4e544c20c28a147 100644 (file)
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -164,4 +164,16 @@ config SND_SOC_EUKREA_TLV320
          Enable I2S based access to the TLV320AIC23B codec attached
          to the SSI interface
 
+config SND_SOC_IMX_SGTL5000
+       tristate "SoC Audio support for i.MX boards with sgtl5000"
+       depends on OF && I2C
+       select SND_SOC_SGTL5000
+       select SND_SOC_IMX_PCM_DMA
+       select SND_SOC_IMX_AUDMUX
+       select SND_SOC_FSL_SSI
+       select SND_SOC_FSL_UTILS
+       help
+         Say Y if you want to add support for SoC audio on an i.MX board with
+         a sgtl5000 codec.
+
 endif # SND_IMX_SOC

diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index fbdbed0af9092a3e833f8b2f34e8eb3a5fc26a0e..638d3852601a93e7c1d95d82762a098731a74164 100644 (file)
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -40,8 +40,10 @@ snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
 snd-soc-phycore-ac97-objs := phycore-ac97.o
 snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
 snd-soc-wm1133-ev1-objs := wm1133-ev1.o
+snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
 
 obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
 obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
 obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
 obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
+obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o

diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c
new file mode 100644 (file)
index 0000000..3786b61
--- /dev/null
+++ b/sound/soc/fsl/imx-sgtl5000.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <sound/soc.h>
+
+#include "../codecs/sgtl5000.h"
+#include "imx-audmux.h"
+
+#define DAI_NAME_SIZE  32
+
+struct imx_sgtl5000_data {
+       struct snd_soc_dai_link dai;
+       struct snd_soc_card card;
+       char codec_dai_name[DAI_NAME_SIZE];
+       char platform_name[DAI_NAME_SIZE];
+       unsigned int clk_frequency;
+};
+
+static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+       struct imx_sgtl5000_data *data = container_of(rtd->card,
+                                       struct imx_sgtl5000_data, card);
+       struct device *dev = rtd->card->dev;
+       int ret;
+
+       ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
+                                    data->clk_frequency, SND_SOC_CLOCK_IN);
+       if (ret) {
+               dev_err(dev, "could not set codec driver clock params\n");
+               return ret;
+       }
+
+       return 0;
+}
+
+static int __devinit imx_sgtl5000_probe(struct platform_device *pdev)
+{
+       struct device_node *np = pdev->dev.of_node;
+       struct device_node *ssi_np, *codec_np;
+       struct platform_device *ssi_pdev;
+       struct imx_sgtl5000_data *data;
+       int int_port, ext_port;
+       int ret;
+
+       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--;
+       ret = imx_audmux_v2_configure_port(int_port,
+                       IMX_AUDMUX_V2_PTCR_SYN |
+                       IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
+                       IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+                       IMX_AUDMUX_V2_PTCR_TFSDIR |
+                       IMX_AUDMUX_V2_PTCR_TCLKDIR,
+                       IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
+       if (ret) {
+               dev_err(&pdev->dev, "audmux internal port setup failed\n");
+               return ret;
+       }
+       imx_audmux_v2_configure_port(ext_port,
+                       IMX_AUDMUX_V2_PTCR_SYN |
+                       IMX_AUDMUX_V2_PTCR_TCSEL(int_port),
+                       IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+       if (ret) {
+               dev_err(&pdev->dev, "audmux external port setup failed\n");
+               return ret;
+       }
+
+       ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
+       codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
+       if (!ssi_np || !codec_np) {
+               dev_err(&pdev->dev, "phandle missing or invalid\n");
+               return -EINVAL;
+       }
+
+       ssi_pdev = of_find_device_by_node(ssi_np);
+       if (!ssi_pdev) {
+               dev_err(&pdev->dev, "failed to find SSI platform device\n");
+               return -EINVAL;
+       }
+
+       data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
+
+       ret = of_property_read_u32(codec_np, "clock-frequency",
+                                  &data->clk_frequency);
+       if (ret) {
+               dev_err(&pdev->dev, "clock-frequency missing or invalid\n");
+               return ret;
+       }
+
+       data->dai.name = "HiFi";
+       data->dai.stream_name = "HiFi";
+       data->dai.codec_dai_name = "sgtl5000";
+       data->dai.codec_of_node = codec_np;
+       data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
+       data->dai.platform_name = "imx-pcm-audio";
+       data->dai.init = &imx_sgtl5000_dai_init;
+       data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                           SND_SOC_DAIFMT_CBM_CFM;
+
+       data->card.dev = &pdev->dev;
+       ret = snd_soc_of_parse_card_name(&data->card, "model");
+       if (ret)
+               return ret;
+       data->card.num_links = 1;
+       data->card.dai_link = &data->dai;
+
+       ret = snd_soc_register_card(&data->card);
+       if (ret) {
+               dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+               return ret;
+       }
+
+       platform_set_drvdata(pdev, data);
+       of_node_put(ssi_np);
+       of_node_put(codec_np);
+
+       return 0;
+}
+
+static int __devexit imx_sgtl5000_remove(struct platform_device *pdev)
+{
+       struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
+
+       snd_soc_unregister_card(&data->card);
+
+       return 0;
+}
+
+static const struct of_device_id imx_sgtl5000_dt_ids[] = {
+       { .compatible = "fsl,imx-audio-sgtl5000", },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
+
+static struct platform_driver imx_sgtl5000_driver = {
+       .driver = {
+               .name = "imx-sgtl5000",
+               .owner = THIS_MODULE,
+               .of_match_table = imx_sgtl5000_dt_ids,
+       },
+       .probe = imx_sgtl5000_probe,
+       .remove = __devexit_p(imx_sgtl5000_remove),
+};
+module_platform_driver(imx_sgtl5000_driver);
+
+MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
+MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-sgtl5000");