ASoC: rockchip: Add machine driver for RK3399 GRU Boards

Because we need to support the multiple codecs (MAX98357A/RT5514/DA7219)
on the RK3399 GRU boards, this patch can help us to support these codecs.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

4 files changed, 365 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
new file mode 100644
index 000000000000..f19b6c830a34
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
@@ -0,0 +1,15 @@
+ROCKCHIP with MAX98357A/RT5514/DA7219 codecs on GRU boards
+
+Required properties:
+- compatible: "rockchip,rk3399-gru-sound"
+- rockchip,cpu: The phandle of the Rockchip I2S controller that's
+  connected to the codecs
+- rockchip,codec: The phandle of the MAX98357A/RT5514/DA7219 codecs
+
+Example:
+
+sound {
+        compatible = "rockchip,rk3399-gru-sound";
+        rockchip,cpu = <&i2s0>;
+        rockchip,codec = <&max98357a &rt5514 &da7219>;
+};
diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index f1e0c703e0d2..6d3903284a07 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -41,3 +41,14 @@ 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_RK3399_GRU_SOUND
+        tristate "ASoC support multiple codecs for Rockchip RK3399 GRU boards"
+        depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB && CLKDEV_LOOKUP
+        select SND_SOC_ROCKCHIP_I2S
+        select SND_SOC_MAX98357A
+        select SND_SOC_RT5514
+        select SND_SOC_DA7219
+        help
+          Say Y or M here if you want to add support multiple codecs for SoC
+          audio on Rockchip RK3399 GRU boards.
diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile
index c0bf560125f3..84e5c7c700e7 100644
--- a/sound/soc/rockchip/Makefile
+++ b/sound/soc/rockchip/Makefile
@@ -7,6 +7,8 @@ obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o
 
 snd-soc-rockchip-max98090-objs := rockchip_max98090.o
 snd-soc-rockchip-rt5645-objs := rockchip_rt5645.o
+snd-soc-rk3399-gru-sound-objs := rk3399_gru_sound.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_RK3399_GRU_SOUND) += snd-soc-rk3399-gru-sound.o
diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
new file mode 100644
index 000000000000..9933703f7d44
--- /dev/null
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -0,0 +1,337 @@
+/*
+ * Rockchip machine ASoC driver for boards using MAX98357A/RT5514/DA7219
+ *
+ * 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/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/delay.h>
+#include <linux/spi/spi.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include "rockchip_i2s.h"
+#include "../codecs/da7219.h"
+#include "../codecs/da7219-aad.h"
+#include "../codecs/rt5514.h"
+
+#define DRV_NAME "rk3399-gru-sound"
+
+#define SOUND_FS        256
+
+static struct snd_soc_jack rockchip_sound_jack;
+
+static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = {
+        SND_SOC_DAPM_HP("Headphones", NULL),
+        SND_SOC_DAPM_SPK("Speakers", NULL),
+        SND_SOC_DAPM_MIC("Headset Mic", NULL),
+        SND_SOC_DAPM_MIC("Int Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route rockchip_dapm_routes[] = {
+        /* Input Lines */
+        {"MIC", NULL, "Headset Mic"},
+        {"DMIC1L", NULL, "Int Mic"},
+        {"DMIC1R", NULL, "Int Mic"},
+
+        /* Output Lines */
+        {"Headphones", NULL, "HPL"},
+        {"Headphones", NULL, "HPR"},
+        {"Speakers", NULL, "Speaker"},
+};
+
+static const struct snd_kcontrol_new rockchip_controls[] = {
+        SOC_DAPM_PIN_SWITCH("Headphones"),
+        SOC_DAPM_PIN_SWITCH("Speakers"),
+        SOC_DAPM_PIN_SWITCH("Headset Mic"),
+        SOC_DAPM_PIN_SWITCH("Int Mic"),
+};
+
+static int rockchip_sound_max98357a_hw_params(struct snd_pcm_substream *substream,
+                             struct snd_pcm_hw_params *params)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        unsigned int mclk;
+        int ret;
+
+        /* max98357a supports these sample rates */
+        switch (params_rate(params)) {
+        case 8000:
+        case 16000:
+        case 48000:
+        case 96000:
+                mclk = params_rate(params) * SOUND_FS;
+                break;
+        default:
+                dev_err(rtd->card->dev, "%s() doesn't support this sample rate: %d\n",
+                                __func__, params_rate(params));
+                return -EINVAL;
+        }
+
+        ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, 0);
+        if (ret) {
+                dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
+                                __func__, mclk, ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int rockchip_sound_rt5514_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;
+        unsigned int mclk;
+        int ret;
+
+        mclk = params_rate(params) * SOUND_FS;
+
+        ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+                                     SND_SOC_CLOCK_OUT);
+        if (ret < 0) {
+                dev_err(rtd->card->dev, "Can't set cpu clock out %d\n", ret);
+                return ret;
+        }
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, RT5514_SCLK_S_MCLK,
+                                     mclk, SND_SOC_CLOCK_IN);
+        if (ret) {
+                dev_err(rtd->card->dev, "%s() error setting sysclk to %u: %d\n",
+                                __func__, params_rate(params) * 512, ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int rockchip_sound_da7219_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;
+        }
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+                                     SND_SOC_CLOCK_IN);
+        if (ret < 0) {
+                dev_err(codec_dai->dev, "Can't set codec clock in %d\n", ret);
+                return ret;
+        }
+
+        ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
+        if (ret < 0) {
+                dev_err(codec_dai->dev, "Can't set pll sysclk mclk %d\n", ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_codec *codec = rtd->codec_dais[0]->codec;
+        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+        int ret;
+
+        /* We need default MCLK and PLL settings for the accessory detection */
+        ret = snd_soc_dai_set_sysclk(codec_dai, 0, 12288000,
+                                     SND_SOC_CLOCK_IN);
+        if (ret < 0) {
+                dev_err(codec_dai->dev, "Init can't set codec clock in %d\n", ret);
+                return ret;
+        }
+
+        ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
+        if (ret < 0) {
+                dev_err(codec_dai->dev, "Init can't set pll sysclk mclk %d\n", ret);
+                return ret;
+        }
+
+        /* Enable Headset and 4 Buttons Jack detection */
+        ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
+                                    SND_JACK_HEADSET | SND_JACK_LINEOUT |
+                                    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+                                    SND_JACK_BTN_2 | SND_JACK_BTN_3,
+                                    &rockchip_sound_jack, NULL, 0);
+
+        if (ret) {
+                dev_err(rtd->card->dev, "New Headset Jack failed! (%d)\n", ret);
+                return ret;
+        }
+
+        da7219_aad_jack_det(codec, &rockchip_sound_jack);
+
+        return 0;
+}
+
+static struct snd_soc_ops rockchip_sound_max98357a_ops = {
+        .hw_params = rockchip_sound_max98357a_hw_params,
+};
+
+static struct snd_soc_ops rockchip_sound_rt5514_ops = {
+        .hw_params = rockchip_sound_rt5514_hw_params,
+};
+
+static struct snd_soc_ops rockchip_sound_da7219_ops = {
+        .hw_params = rockchip_sound_da7219_hw_params,
+};
+
+enum {
+        DAILINK_MAX98357A,
+        DAILINK_RT5514,
+        DAILINK_DA7219,
+};
+
+static struct snd_soc_dai_link rockchip_dailinks[] = {
+        [DAILINK_MAX98357A] = {
+                .name = "MAX98357A",
+                .stream_name = "MAX98357A PCM",
+                .codec_dai_name = "HiFi",
+                .ops = &rockchip_sound_max98357a_ops,
+                /* set max98357a as slave */
+                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                        SND_SOC_DAIFMT_CBS_CFS,
+        },
+        [DAILINK_RT5514] = {
+                .name = "RT5514",
+                .stream_name = "RT5514 PCM",
+                .codec_dai_name = "rt5514-aif1",
+                .ops = &rockchip_sound_rt5514_ops,
+                /* set rt5514 as slave */
+                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                        SND_SOC_DAIFMT_CBS_CFS,
+        },
+        [DAILINK_DA7219] = {
+                .name = "DA7219",
+                .stream_name = "DA7219 PCM",
+                .codec_dai_name = "da7219-hifi",
+                .init = rockchip_sound_da7219_init,
+                .ops = &rockchip_sound_da7219_ops,
+                /* set da7219 as slave */
+                .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 = "rk3399-gru-sound",
+        .owner = THIS_MODULE,
+        .dai_link = rockchip_dailinks,
+        .num_links =  ARRAY_SIZE(rockchip_dailinks),
+        .dapm_widgets = rockchip_dapm_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
+        .dapm_routes = rockchip_dapm_routes,
+        .num_dapm_routes = ARRAY_SIZE(rockchip_dapm_routes),
+        .controls = rockchip_controls,
+        .num_controls = ARRAY_SIZE(rockchip_controls),
+};
+
+static int rockchip_sound_probe(struct platform_device *pdev)
+{
+        struct snd_soc_card *card = &rockchip_sound_card;
+        struct device_node *cpu_node;
+        int i, 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;
+        }
+
+        for (i = 0; i < card->num_links; i++) {
+                rockchip_dailinks[i].platform_of_node = cpu_node;
+                rockchip_dailinks[i].cpu_of_node = cpu_node;
+
+                rockchip_dailinks[i].codec_of_node =
+                        of_parse_phandle(pdev->dev.of_node, "rockchip,codec", i);
+                if (!rockchip_dailinks[i].codec_of_node) {
+                        dev_err(&pdev->dev,
+                                "Property[%d] 'rockchip,codec' missing or invalid\n", i);
+                        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,rk3399-gru-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("Xing Zheng <zhengxing@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);