ASoC: qcom: add sdm845 sound card support

This patch adds sdm845 audio machine driver support.

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index 87838fa2799751bb3acbb99f15c96200b0285337..350730839c6fde587d9163268bd6d973d98f18db 100644 (file)
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -90,3 +90,11 @@ config SND_SOC_MSM8996
           Support for Qualcomm Technologies LPASS audio block in
           APQ8096 SoC-based systems.
           Say Y if you want to use audio device on this SoCs
+
+config SND_SOC_SDM845
+       tristate "SoC Machine driver for SDM845 boards"
+       select SND_SOC_QDSP6
+       help
+         To add support for audio on Qualcomm Technologies Inc.
+         SDM845 SoC-based systems.
+         Say Y if you want to use audio device on this SoCs.

diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
index fefecc0722653b851d03063a489c3ee99ec41fe4..f0e94d48ba9887b1f802aaf73a4f55158890b475 100644 (file)
--- a/sound/soc/qcom/Makefile
+++ b/sound/soc/qcom/Makefile
@@ -14,10 +14,12 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o
 snd-soc-storm-objs := storm.o
 snd-soc-apq8016-sbc-objs := apq8016_sbc.o
 snd-soc-apq8096-objs := apq8096.o common.o
+snd-soc-sdm845-objs := sdm845.o common.o
 
 obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
 obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o
 obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o
+obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o
 
 #DSP lib
 obj-$(CONFIG_SND_SOC_QDSP6) += qdsp6/

diff --git a/sound/soc/qcom/sdm845.c b/sound/soc/qcom/sdm845.c
new file mode 100644 (file)
index 0000000..bf4ec46
--- /dev/null
+++ b/sound/soc/qcom/sdm845.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/atomic.h>
+#include <linux/of_device.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <linux/soc/qcom/apr.h>
+#include "common.h"
+#include "qdsp6/q6afe.h"
+
+#define DEFAULT_SAMPLE_RATE_48K                48000
+#define DEFAULT_MCLK_RATE              24576000
+#define DEFAULT_BCLK_RATE              12288000
+
+struct sdm845_snd_data {
+       struct snd_soc_card *card;
+       uint32_t pri_mi2s_clk_count;
+       uint32_t quat_tdm_clk_count;
+};
+
+static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};
+
+static int sdm845_tdm_snd_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;
+       int ret = 0;
+       int channels, slot_width;
+
+       switch (params_format(params)) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               slot_width = 32;
+               break;
+       default:
+               dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
+                               __func__, params_format(params));
+               return -EINVAL;
+       }
+
+       channels = params_channels(params);
+       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+               ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
+                               8, slot_width);
+               if (ret < 0) {
+                       dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
+                                       __func__, ret);
+                       goto end;
+               }
+
+               ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
+                               channels, tdm_slot_offset);
+               if (ret < 0) {
+                       dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
+                                       __func__, ret);
+                       goto end;
+               }
+       } else {
+               ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
+                               8, slot_width);
+               if (ret < 0) {
+                       dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
+                                       __func__, ret);
+                       goto end;
+               }
+
+               ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
+                               tdm_slot_offset, 0, NULL);
+               if (ret < 0) {
+                       dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
+                                       __func__, ret);
+                       goto end;
+               }
+       }
+end:
+       return ret;
+}
+
+static int sdm845_snd_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;
+       int ret = 0;
+
+       switch (cpu_dai->id) {
+       case QUATERNARY_TDM_RX_0:
+       case QUATERNARY_TDM_TX_0:
+               ret = sdm845_tdm_snd_hw_params(substream, params);
+               break;
+       default:
+               pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
+               break;
+       }
+       return ret;
+}
+
+static int sdm845_snd_startup(struct snd_pcm_substream *substream)
+{
+       unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_card *card = rtd->card;
+       struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+       switch (cpu_dai->id) {
+       case PRIMARY_MI2S_RX:
+       case PRIMARY_MI2S_TX:
+               if (++(data->pri_mi2s_clk_count) == 1) {
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_MCLK_1,
+                               DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
+                               DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+               }
+               snd_soc_dai_set_fmt(cpu_dai, fmt);
+               break;
+
+       case QUATERNARY_TDM_RX_0:
+       case QUATERNARY_TDM_TX_0:
+               if (++(data->quat_tdm_clk_count) == 1) {
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
+                               DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+               }
+               break;
+
+       default:
+               pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
+               break;
+       }
+       return 0;
+}
+
+static void  sdm845_snd_shutdown(struct snd_pcm_substream *substream)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_card *card = rtd->card;
+       struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+       switch (cpu_dai->id) {
+       case PRIMARY_MI2S_RX:
+       case PRIMARY_MI2S_TX:
+               if (--(data->pri_mi2s_clk_count) == 0) {
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_MCLK_1,
+                               0, SNDRV_PCM_STREAM_PLAYBACK);
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
+                               0, SNDRV_PCM_STREAM_PLAYBACK);
+               };
+               break;
+
+       case QUATERNARY_TDM_RX_0:
+       case QUATERNARY_TDM_TX_0:
+               if (--(data->quat_tdm_clk_count) == 0) {
+                       snd_soc_dai_set_sysclk(cpu_dai,
+                               Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
+                               0, SNDRV_PCM_STREAM_PLAYBACK);
+               }
+               break;
+
+       default:
+               pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
+               break;
+       }
+}
+
+static struct snd_soc_ops sdm845_be_ops = {
+       .hw_params = sdm845_snd_hw_params,
+       .startup = sdm845_snd_startup,
+       .shutdown = sdm845_snd_shutdown,
+};
+
+static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+                               struct snd_pcm_hw_params *params)
+{
+       struct snd_interval *rate = hw_param_interval(params,
+                                       SNDRV_PCM_HW_PARAM_RATE);
+       struct snd_interval *channels = hw_param_interval(params,
+                                       SNDRV_PCM_HW_PARAM_CHANNELS);
+       struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+
+       rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
+       channels->min = channels->max = 2;
+       snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
+
+       return 0;
+}
+
+static void sdm845_add_be_ops(struct snd_soc_card *card)
+{
+       struct snd_soc_dai_link *link = card->dai_link;
+       int i, num_links = card->num_links;
+
+       for (i = 0; i < num_links; i++) {
+               if (link->no_pcm == 1) {
+                       link->ops = &sdm845_be_ops;
+                       link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
+               }
+               link++;
+       }
+}
+
+static int sdm845_snd_platform_probe(struct platform_device *pdev)
+{
+       struct snd_soc_card *card;
+       struct sdm845_snd_data *data;
+       struct device *dev = &pdev->dev;
+       int ret;
+
+       card = kzalloc(sizeof(*card), GFP_KERNEL);
+       if (!card)
+               return -ENOMEM;
+
+       /* Allocate the private data */
+       data = kzalloc(sizeof(*data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
+
+       card->dev = dev;
+       card->auto_bind = true;
+       dev_set_drvdata(dev, card);
+       ret = qcom_snd_parse_of(card);
+       if (ret) {
+               dev_err(dev, "Error parsing OF data\n");
+               goto parse_dt_fail;
+       }
+
+       data->card = card;
+       snd_soc_card_set_drvdata(card, data);
+
+       sdm845_add_be_ops(card);
+       ret = snd_soc_register_card(card);
+       if (ret) {
+               dev_err(dev, "Sound card registration failed\n");
+               goto register_card_fail;
+       }
+       return ret;
+
+register_card_fail:
+       kfree(card->dai_link);
+parse_dt_fail:
+       kfree(data);
+       kfree(card);
+       return ret;
+}
+
+static int sdm845_snd_platform_remove(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
+       struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
+
+       card->auto_bind = false;
+       snd_soc_unregister_card(card);
+       kfree(card->dai_link);
+       kfree(data);
+       kfree(card);
+       return 0;
+}
+
+static const struct of_device_id sdm845_snd_device_id[]  = {
+       { .compatible = "qcom,sdm845-sndcard" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);
+
+static struct platform_driver sdm845_snd_driver = {
+       .probe = sdm845_snd_platform_probe,
+       .remove = sdm845_snd_platform_remove,
+       .driver = {
+               .name = "msm-snd-sdm845",
+               .of_match_table = sdm845_snd_device_id,
+       },
+};
+module_platform_driver(sdm845_snd_driver);
+
+MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");