apq8096.c

  1// SPDX-License-Identifier: GPL-2.0
  2// Copyright (c) 2018, Linaro Limited
  3
  4#include <linux/mod_devicetable.h>
  5#include <linux/module.h>
  6#include <linux/platform_device.h>
  7#include <sound/soc.h>
  8#include <sound/soc-dapm.h>
  9#include <sound/pcm.h>
 10#include "common.h"
 11
 12#define SLIM_MAX_TX_PORTS 16
 13#define SLIM_MAX_RX_PORTS 16
 14#define WCD9335_DEFAULT_MCLK_RATE	9600000
 15
 16static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 17				      struct snd_pcm_hw_params *params)
 18{
 19	struct snd_interval *rate = hw_param_interval(params,
 20					SNDRV_PCM_HW_PARAM_RATE);
 21	struct snd_interval *channels = hw_param_interval(params,
 22					SNDRV_PCM_HW_PARAM_CHANNELS);
 23
 24	rate->min = rate->max = 48000;
 25	channels->min = channels->max = 2;
 26
 27	return 0;
 28}
 29
 30static int msm_snd_hw_params(struct snd_pcm_substream *substream,
 31			     struct snd_pcm_hw_params *params)
 32{
 33	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 34	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 35	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 36	u32 rx_ch[SLIM_MAX_RX_PORTS], tx_ch[SLIM_MAX_TX_PORTS];
 37	u32 rx_ch_cnt = 0, tx_ch_cnt = 0;
 38	int ret = 0;
 39
 40	ret = snd_soc_dai_get_channel_map(codec_dai,
 41				&tx_ch_cnt, tx_ch, &rx_ch_cnt, rx_ch);
 42	if (ret != 0 && ret != -ENOTSUPP) {
 43		pr_err("failed to get codec chan map, err:%d\n", ret);
 44		goto end;
 45	} else if (ret == -ENOTSUPP) {
 46		return 0;
 47	}
 48
 49	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 50		ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
 51						  rx_ch_cnt, rx_ch);
 52	else
 53		ret = snd_soc_dai_set_channel_map(cpu_dai, tx_ch_cnt, tx_ch,
 54						  0, NULL);
 55	if (ret != 0 && ret != -ENOTSUPP)
 56		pr_err("Failed to set cpu chan map, err:%d\n", ret);
 57	else if (ret == -ENOTSUPP)
 58		ret = 0;
 59end:
 60	return ret;
 61}
 62
 63static const struct snd_soc_ops apq8096_ops = {
 64	.hw_params = msm_snd_hw_params,
 65};
 66
 67static int apq8096_init(struct snd_soc_pcm_runtime *rtd)
 68{
 69	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 70
 71	/*
 72	 * Codec SLIMBUS configuration
 73	 * RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8, RX9, RX10, RX11, RX12, RX13
 74	 * TX1, TX2, TX3, TX4, TX5, TX6, TX7, TX8, TX9, TX10, TX11, TX12, TX13
 75	 * TX14, TX15, TX16
 76	 */
 77	unsigned int rx_ch[SLIM_MAX_RX_PORTS] = {144, 145, 146, 147, 148, 149,
 78					150, 151, 152, 153, 154, 155, 156};
 79	unsigned int tx_ch[SLIM_MAX_TX_PORTS] = {128, 129, 130, 131, 132, 133,
 80					    134, 135, 136, 137, 138, 139,
 81					    140, 141, 142, 143};
 82
 83	snd_soc_dai_set_channel_map(codec_dai, ARRAY_SIZE(tx_ch),
 84					tx_ch, ARRAY_SIZE(rx_ch), rx_ch);
 85
 86	snd_soc_dai_set_sysclk(codec_dai, 0, WCD9335_DEFAULT_MCLK_RATE,
 87				SNDRV_PCM_STREAM_PLAYBACK);
 88
 89	return 0;
 90}
 91
 92static void apq8096_add_be_ops(struct snd_soc_card *card)
 93{
 94	struct snd_soc_dai_link *link;
 95	int i;
 96
 97	for_each_card_prelinks(card, i, link) {
 98		if (link->no_pcm == 1) {
 99			link->be_hw_params_fixup = apq8096_be_hw_params_fixup;
100			link->init = apq8096_init;
101			link->ops = &apq8096_ops;
102		}
103	}
104}
105
106static int apq8096_platform_probe(struct platform_device *pdev)
107{
108	struct snd_soc_card *card;
109	struct device *dev = &pdev->dev;
110	int ret;
111
112	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
113	if (!card)
114		return -ENOMEM;
115
116	card->driver_name = "apq8096";
117	card->dev = dev;
118	card->owner = THIS_MODULE;
119	dev_set_drvdata(dev, card);
120	ret = qcom_snd_parse_of(card);
121	if (ret)
122		return ret;
123
124	apq8096_add_be_ops(card);
125	return devm_snd_soc_register_card(dev, card);
126}
127
128static const struct of_device_id msm_snd_apq8096_dt_match[] = {
129	{.compatible = "qcom,apq8096-sndcard"},
130	{}
131};
132
133MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
134
135static struct platform_driver msm_snd_apq8096_driver = {
136	.probe  = apq8096_platform_probe,
137	.driver = {
138		.name = "msm-snd-apq8096",
139		.of_match_table = msm_snd_apq8096_dt_match,
140	},
141};
142module_platform_driver(msm_snd_apq8096_driver);
143MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
144MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
145MODULE_LICENSE("GPL");