^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * storm.c -- ALSA SoC machine driver for QTi ipq806x-based Storm board
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <sound/pcm_params.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <sound/soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define STORM_SYSCLK_MULT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int storm_ops_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct snd_pcm_hw_params *params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct snd_soc_card *card = soc_runtime->card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) snd_pcm_format_t format = params_format(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) unsigned int rate = params_rate(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned int sysclk_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int bitwidth, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) bitwidth = snd_pcm_format_width(format);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) if (bitwidth < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) dev_err(card->dev, "invalid bit width given: %d\n", bitwidth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return bitwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * as the CPU DAI is the I2S bus master and no system clock is needed by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * the MAX98357a DAC, simply set the system clock to be a constant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * multiple of the bit clock for the clock divider
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) sysclk_freq = rate * bitwidth * 2 * STORM_SYSCLK_MULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(soc_runtime, 0), 0, sysclk_freq, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) dev_err(card->dev, "error setting sysclk to %u: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) sysclk_freq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static const struct snd_soc_ops storm_soc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .hw_params = storm_ops_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) SND_SOC_DAILINK_DEFS(hifi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) DAILINK_COMP_ARRAY(COMP_EMPTY()),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) DAILINK_COMP_ARRAY(COMP_EMPTY()));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static struct snd_soc_dai_link storm_dai_link = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .name = "Primary",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .stream_name = "Primary",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .ops = &storm_soc_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) SND_SOC_DAILINK_REG(hifi),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int storm_parse_of(struct snd_soc_card *card)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct snd_soc_dai_link *dai_link = card->dai_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct device_node *np = card->dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) dai_link->cpus->of_node = of_parse_phandle(np, "cpu", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (!dai_link->cpus->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dev_err(card->dev, "error getting cpu phandle\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) dai_link->platforms->of_node = dai_link->cpus->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) dai_link->codecs->of_node = of_parse_phandle(np, "codec", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!dai_link->codecs->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) dev_err(card->dev, "error getting codec phandle\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int storm_platform_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct snd_soc_card *card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!card)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) card->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) card->owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ret = snd_soc_of_parse_card_name(card, "qcom,model");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) dev_err(&pdev->dev, "error parsing card name: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) card->dai_link = &storm_dai_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) card->num_links = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ret = storm_parse_of(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) dev_err(&pdev->dev, "error resolving dai links: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ret = devm_snd_soc_register_card(&pdev->dev, card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) dev_err(&pdev->dev, "error registering soundcard: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static const struct of_device_id storm_device_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) { .compatible = "google,storm-audio" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) MODULE_DEVICE_TABLE(of, storm_device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static struct platform_driver storm_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .name = "storm-audio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .of_match_table =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) of_match_ptr(storm_device_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .probe = storm_platform_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) module_platform_driver(storm_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) MODULE_DESCRIPTION("QTi IPQ806x-based Storm Machine Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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