ASoC: rockchip: Add machine driver for cdn DP

Change-Id: Id5fe7eee2bf1e73103d71f61a2b98aeaf0ea48b1
Signed-off-by: Chris Zhong <zyw@rock-chips.com>

diff --git a/Documentation/devicetree/bindings/sound/rockchip-cdndp.txt b/Documentation/devicetree/bindings/sound/rockchip-cdndp.txt
new file mode 100644 (file)
index 0000000..8e032d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip-cdndp.txt
@@ -0,0 +1,15 @@
+ROCKCHIP with DP via I2S
+
+Required properties:
+- compatible: "rockchip,cdndp-sound"
+- rockchip,cpu: The phandle of the Rockchip I2S controller controller that's
+  connected to the codec
+- rockchip,codec: The phandle of the the DP encoder node
+
+Example:
+
+sound {
+       compatible = "rockchip,cdndp-sound";
+       rockchip,cpu = <&i2s2>;
+       rockchip,codec = <&cdn_dp>;
+};

diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 6f874e1a721b5541c36feaface2befab13e26942..8e68a5d859f235b2dd928d24ffdca9c3e62190e9 100644 (file)
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -50,3 +50,11 @@ config SND_SOC_ROCKCHIP_RT5645
        help
          Say Y or M here if you want to add support for SoC audio on Rockchip
          boards using the RT5645/RT5650 codec, such as Veyron.
+
+config SND_SOC_ROCKCHIP_CDNDP
+       tristate "ASoC support for Rockchip CDN DP common codec"
+       depends on SND_SOC_ROCKCHIP && CLKDEV_LOOKUP
+       select SND_SOC_ROCKCHIP_I2S
+       help
+         Say Y or M here if you want to add support for SoC audio on Rockchip
+         boards using CDN DP, such as RK3399 boards.

diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile
index 38a83ed4be5ea0fdb8e6953e05da097eae6c6fbc..17d084b36fa4ce8a7dfe975b2d02b8eac4481e64 100644 (file)
--- a/sound/soc/rockchip/Makefile
+++ b/sound/soc/rockchip/Makefile
@@ -8,7 +8,9 @@ obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o
 snd-soc-rockchip-da7219-objs := rockchip_da7219.o
 snd-soc-rockchip-max98090-objs := rockchip_max98090.o
 snd-soc-rockchip-rt5645-objs := rockchip_rt5645.o
+snd-soc-rockchip-cdndp-objs := rockchip_cdndp.o
 
 obj-$(CONFIG_SND_SOC_ROCKCHIP_DA7219) += snd-soc-rockchip-da7219.o
 obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o
 obj-$(CONFIG_SND_SOC_ROCKCHIP_RT5645) += snd-soc-rockchip-rt5645.o
+obj-$(CONFIG_SND_SOC_ROCKCHIP_CDNDP) += snd-soc-rockchip-cdndp.o

diff --git a/sound/soc/rockchip/rockchip_cdndp.c b/sound/soc/rockchip/rockchip_cdndp.c
new file mode 100644 (file)
index 0000000..7c0222a
--- /dev/null
+++ b/sound/soc/rockchip/rockchip_cdndp.c
@@ -0,0 +1,161 @@
+/*
+ * Rockchip machine ASoC driver for boards using CDN DP
+ *
+ * Copyright (c) 2016, ROCKCHIP CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <sound/jack.h>
+#include <sound/hdmi-codec.h>
+#include <sound/soc.h>
+
+#define DRV_NAME "rockchip-cdndp-sound"
+
+static int rockchip_sound_cdndp_hw_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;
+       struct snd_soc_dai *codec_dai = rtd->codec_dai;
+       int mclk, ret;
+
+       /* in bypass mode, the mclk has to be one of the frequencies below */
+       switch (params_rate(params)) {
+       case 8000:
+       case 16000:
+       case 24000:
+       case 32000:
+       case 48000:
+       case 64000:
+       case 96000:
+               mclk = 12288000;
+               break;
+       case 11025:
+       case 22050:
+       case 44100:
+       case 88200:
+               mclk = 11289600;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+                                    SND_SOC_CLOCK_OUT);
+       if (ret < 0) {
+               dev_err(codec_dai->dev, "Can't set cpu clock out %d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+static struct snd_soc_jack cdn_dp_card_jack;
+
+static int rockchip_sound_cdndp_init(struct snd_soc_pcm_runtime *runtime)
+{
+       struct snd_soc_card *card = runtime->card;
+       struct snd_soc_codec *codec = runtime->codec;
+       int ret;
+
+       /* enable jack detection */
+       ret = snd_soc_card_jack_new(card, "DP Jack", SND_JACK_LINEOUT,
+                                   &cdn_dp_card_jack, NULL, 0);
+       if (ret) {
+               dev_err(card->dev, "Can't create DP Jack %d\n", ret);
+               return ret;
+       }
+
+       return hdmi_codec_set_jack_detect(codec, &cdn_dp_card_jack);
+}
+
+static struct snd_soc_ops rockchip_sound_cdndp_ops = {
+       .hw_params = rockchip_sound_cdndp_hw_params,
+};
+
+static struct snd_soc_dai_link cdndp_dailink = {
+       .name = "DP",
+       .stream_name = "DP PCM",
+       .codec_dai_name = "i2s-hifi",
+       .init = rockchip_sound_cdndp_init,
+       .ops = &rockchip_sound_cdndp_ops,
+       .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                  SND_SOC_DAIFMT_CBS_CFS,
+};
+
+static struct snd_soc_card rockchip_sound_card = {
+       .name = "rockchip-cdndp-sound",
+       .owner = THIS_MODULE,
+       .dai_link = &cdndp_dailink,
+       .num_links = 1,
+};
+
+static int rockchip_sound_probe(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = &rockchip_sound_card;
+       struct device_node *cpu_node;
+       int ret;
+
+       cpu_node = of_parse_phandle(pdev->dev.of_node, "rockchip,cpu", 0);
+       if (!cpu_node) {
+               dev_err(&pdev->dev, "Property 'rockchip,cpu' missing or invalid\n");
+               return -EINVAL;
+       }
+
+       cdndp_dailink.platform_of_node = cpu_node;
+       cdndp_dailink.cpu_of_node = cpu_node;
+
+       cdndp_dailink.codec_of_node = of_parse_phandle(pdev->dev.of_node,
+                                                          "rockchip,codec", 0);
+       if (!cdndp_dailink.codec_of_node) {
+               dev_err(&pdev->dev, "Property 'rockchip,codec' invalid\n");
+               return -EINVAL;
+       }
+
+       card->dev = &pdev->dev;
+       platform_set_drvdata(pdev, card);
+
+       ret = devm_snd_soc_register_card(&pdev->dev, card);
+       if (ret)
+               dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+                       __func__, ret);
+
+       return ret;
+}
+
+static const struct of_device_id rockchip_sound_of_match[] = {
+       { .compatible = "rockchip,cdndp-sound", },
+       {},
+};
+
+static struct platform_driver rockchip_sound_driver = {
+       .probe = rockchip_sound_probe,
+       .driver = {
+               .name = DRV_NAME,
+               .of_match_table = rockchip_sound_of_match,
+#ifdef CONFIG_PM
+               .pm = &snd_soc_pm_ops,
+#endif
+       },
+};
+
+module_platform_driver(rockchip_sound_driver);
+
+MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip CDN DP Machine Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);