cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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apq8096.c (3911B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2018, Linaro Limited
      3
      4#include <linux/module.h>
      5#include <linux/platform_device.h>
      6#include <linux/of_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 = asoc_substream_to_rtd(substream);
     34	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
     35	struct snd_soc_dai *cpu_dai = asoc_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 = asoc_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->dev = dev;
    117	card->owner = THIS_MODULE;
    118	dev_set_drvdata(dev, card);
    119	ret = qcom_snd_parse_of(card);
    120	if (ret)
    121		return ret;
    122
    123	apq8096_add_be_ops(card);
    124	return devm_snd_soc_register_card(dev, card);
    125}
    126
    127static const struct of_device_id msm_snd_apq8096_dt_match[] = {
    128	{.compatible = "qcom,apq8096-sndcard"},
    129	{}
    130};
    131
    132MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
    133
    134static struct platform_driver msm_snd_apq8096_driver = {
    135	.probe  = apq8096_platform_probe,
    136	.driver = {
    137		.name = "msm-snd-apq8096",
    138		.of_match_table = msm_snd_apq8096_dt_match,
    139	},
    140};
    141module_platform_driver(msm_snd_apq8096_driver);
    142MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
    143MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
    144MODULE_LICENSE("GPL v2");