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Subject[PATCHv1 6/8] ASoC: fsl: add SGT15000 based audio machine driver.
Date
This is the SGTl5000 codec based audio driver supported with both
playback and capture dai link implemention.

This implementation is only compatible with device tree definition.

Signed-off-by: Alison Wang <b18965@freescale.com
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
---
sound/soc/fsl/Kconfig | 10 +++
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/fsl-sgtl5000.c | 208 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 220 insertions(+)
create mode 100644 sound/soc/fsl/fsl-sgtl5000.c

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index a49b386..3fbbbf2 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -220,4 +220,14 @@ config SND_SOC_FSL_PCM
tristate
select SND_SOC_GENERIC_DMAENGINE_PCM

+config SND_SOC_FSL_SGTL5000
+ tristate "SoC Audio support for FSL boards with sgtl5000"
+ depends on OF && I2C
+ select SND_SOC_FSL_SAI
+ select SND_SOC_FSL_PCM
+ select SND_SOC_SGTL5000
+ help
+ Say Y if you want to add support for SoC audio on an FSL board with
+ a sgtl5000 codec.
+
endif # SND_FSL_SOC
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index 865ac23..e8bf0bd 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -58,6 +58,8 @@ obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o
# FSL ARM SAI/SGT15000 Platform Support
snd-soc-fsl-sai-objs := fsl-sai.o
snd-soc-fsl-pcm-objs := fsl-pcm-dma.o
+snd-soc-fsl-sgtl5000-objs := fsl-sgtl5000.o

obj-$(CONFIG_SND_SOC_FSL_SAI) += snd-soc-fsl-sai.o
obj-$(CONFIG_SND_SOC_FSL_PCM) += snd-soc-fsl-pcm.o
+obj-$(CONFIG_SND_SOC_FSL_SGTL5000) += snd-soc-fsl-sgtl5000.o
diff --git a/sound/soc/fsl/fsl-sgtl5000.c b/sound/soc/fsl/fsl-sgtl5000.c
new file mode 100644
index 0000000..bab85ec
--- /dev/null
+++ b/sound/soc/fsl/fsl-sgtl5000.c
@@ -0,0 +1,208 @@
+/*
+ * Freeacale ALSA SoC Audio using SGT1500 as codec.
+ *
+ * Copyright 2012-2013 Freescale Semiconductor, Inc.
+ *
+ * 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:
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/i2c.h>
+#include <linux/clk.h>
+
+#include "../codecs/sgtl5000.h"
+#include "fsl-sai.h"
+
+static unsigned int sysclk_rate;
+
+static int fsl_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret;
+ struct device *dev = rtd->card->dev;
+
+ ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
+ sysclk_rate, SND_SOC_CLOCK_IN);
+ if (ret) {
+ dev_err(dev, "could not set codec driver clock params :%d\n",
+ ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, FSL_SAI_CLK_BUS,
+ sysclk_rate, SND_SOC_CLOCK_OUT);
+ if (ret) {
+ dev_err(dev, "could not set cpu dai driver clock params :%d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sgtl5000_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ unsigned int channels = params_channels(params);
+
+ /* TODO: The SAI driver should figure this out for us */
+ switch (channels) {
+ case 2:
+ snd_soc_dai_set_tdm_slot(cpu_dai, 0xfffffffc, 0xfffffffc, 2, 0);
+ break;
+ case 1:
+ snd_soc_dai_set_tdm_slot(cpu_dai, 0xfffffffe, 0xfffffffe, 1, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops fsl_sgtl5000_hifi_ops = {
+ .hw_params = sgtl5000_params,
+};
+
+static struct snd_soc_dai_link fsl_sgtl5000_dai = {
+ .name = "HiFi",
+ .stream_name = "HiFi",
+ .codec_dai_name = "sgtl5000",
+ .init = &fsl_sgtl5000_dai_init,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &fsl_sgtl5000_hifi_ops,
+};
+
+static const struct snd_soc_dapm_widget fsl_sgtl5000_dapm_widgets[] = {
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+ SND_SOC_DAPM_LINE("Line In Jack", NULL),
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Line Out Jack", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static struct snd_soc_card fsl_sgt1500_card = {
+ .owner = THIS_MODULE,
+ .num_links = 1,
+ .dai_link = &fsl_sgtl5000_dai,
+ .dapm_widgets = fsl_sgtl5000_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(fsl_sgtl5000_dapm_widgets),
+};
+
+static int fsl_sgtl5000_parse_dt(struct platform_device *pdev)
+{
+ int ret;
+ struct device_node *sai_np, *codec_np;
+ struct clk *codec_clk;
+ struct i2c_client *codec_dev;
+ struct device_node *np = pdev->dev.of_node;
+
+ ret = snd_soc_of_parse_card_name(&fsl_sgt1500_card, "model");
+ if (ret)
+ return ret;
+
+ ret = snd_soc_of_parse_audio_routing(&fsl_sgt1500_card,
+ "audio-routing");
+ if (ret)
+ return ret;
+
+ sai_np = of_parse_phandle(np, "saif-controller", 0);
+ if (!sai_np) {
+ dev_err(&pdev->dev, "\"saif-controller\" phandle missing or "
+ "invalid\n");
+ return -EINVAL;
+ }
+ fsl_sgtl5000_dai.cpu_of_node = sai_np;
+ fsl_sgtl5000_dai.platform_of_node = sai_np;
+
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+ if (!codec_np) {
+ dev_err(&pdev->dev, "\"audio-codec\" phandle missing or "
+ "invalid\n");
+ ret = -EINVAL;
+ goto sai_np_fail;
+ }
+ fsl_sgtl5000_dai.codec_of_node = codec_np;
+
+ 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 = PTR_ERR(codec_dev);
+ goto codec_np_fail;
+ }
+
+ codec_clk = devm_clk_get(&codec_dev->dev, NULL);
+ if (IS_ERR(codec_clk)) {
+ dev_err(&pdev->dev, "failed to get codec clock\n");
+ ret = PTR_ERR(codec_clk);
+ goto codec_np_fail;
+ }
+
+ sysclk_rate = clk_get_rate(codec_clk);
+
+codec_np_fail:
+ of_node_put(codec_np);
+sai_np_fail:
+ of_node_put(sai_np);
+
+ return ret;
+}
+
+static int fsl_sgtl5000_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ fsl_sgt1500_card.dev = &pdev->dev;
+
+ ret = fsl_sgtl5000_parse_dt(pdev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "parse sgtl5000 device tree failed :%d\n",
+ ret);
+ return ret;
+ }
+
+ ret = snd_soc_register_card(&fsl_sgt1500_card);
+ if (ret) {
+ dev_err(&pdev->dev, "register soc sound card failed :%d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int fsl_sgtl5000_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_card(&fsl_sgt1500_card);
+
+ return 0;
+}
+
+static const struct of_device_id fsl_sgtl5000_dt_ids[] = {
+ { .compatible = "fsl,vf610-sgtl5000", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, fsl_sgtl5000_dt_ids);
+
+static struct platform_driver fsl_sgtl5000_driver = {
+ .driver = {
+ .name = "fsl-sgtl5000",
+ .owner = THIS_MODULE,
+ .of_match_table = fsl_sgtl5000_dt_ids,
+ },
+ .probe = fsl_sgtl5000_probe,
+ .remove = fsl_sgtl5000_remove,
+};
+module_platform_driver(fsl_sgtl5000_driver);
+
+MODULE_AUTHOR("Xiubo Li <Li.Xiubo@freescale.com>");
+MODULE_DESCRIPTION("Freescale SGTL5000 ASoC driver");
+MODULE_LICENSE("GPL");
--
1.8.0



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