197fb5e8dSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2af5adf12SKenneth Westfield /* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. 3af5adf12SKenneth Westfield * 4af5adf12SKenneth Westfield * max98357a.c -- MAX98357A ALSA SoC Codec driver 5af5adf12SKenneth Westfield */ 6af5adf12SKenneth Westfield 75c27087eSRohit Ainapure #include <linux/acpi.h> 8128f825aSTzung-Bi Shih #include <linux/delay.h> 908d0a55cSKenneth Westfield #include <linux/device.h> 1008d0a55cSKenneth Westfield #include <linux/err.h> 11af5adf12SKenneth Westfield #include <linux/gpio.h> 125c8be987SVincent Stehlé #include <linux/gpio/consumer.h> 1308d0a55cSKenneth Westfield #include <linux/kernel.h> 1408d0a55cSKenneth Westfield #include <linux/mod_devicetable.h> 1508d0a55cSKenneth Westfield #include <linux/module.h> 1608d0a55cSKenneth Westfield #include <linux/of.h> 1708d0a55cSKenneth Westfield #include <linux/platform_device.h> 1808d0a55cSKenneth Westfield #include <sound/pcm.h> 19af5adf12SKenneth Westfield #include <sound/soc.h> 2008d0a55cSKenneth Westfield #include <sound/soc-dai.h> 2108d0a55cSKenneth Westfield #include <sound/soc-dapm.h> 22af5adf12SKenneth Westfield 23cec5b01fSMac Chiang struct max98357a_priv { 24cec5b01fSMac Chiang struct gpio_desc *sdmode; 25cec5b01fSMac Chiang unsigned int sdmode_delay; 26cec5b01fSMac Chiang }; 27cec5b01fSMac Chiang 28128f825aSTzung-Bi Shih static int max98357a_sdmode_event(struct snd_soc_dapm_widget *w, 29128f825aSTzung-Bi Shih struct snd_kcontrol *kcontrol, int event) 30af5adf12SKenneth Westfield { 31128f825aSTzung-Bi Shih struct snd_soc_component *component = 32128f825aSTzung-Bi Shih snd_soc_dapm_to_component(w->dapm); 33128f825aSTzung-Bi Shih struct max98357a_priv *max98357a = 34128f825aSTzung-Bi Shih snd_soc_component_get_drvdata(component); 35af5adf12SKenneth Westfield 36cec5b01fSMac Chiang if (!max98357a->sdmode) 375119222fSAnatol Pomozov return 0; 385119222fSAnatol Pomozov 39128f825aSTzung-Bi Shih if (event & SND_SOC_DAPM_POST_PMU) { 40128f825aSTzung-Bi Shih msleep(max98357a->sdmode_delay); 416cd249cfSTzung-Bi Shih gpiod_set_value(max98357a->sdmode, 1); 42128f825aSTzung-Bi Shih dev_dbg(component->dev, "set sdmode to 1"); 43128f825aSTzung-Bi Shih } else if (event & SND_SOC_DAPM_PRE_PMD) { 44cec5b01fSMac Chiang gpiod_set_value(max98357a->sdmode, 0); 45128f825aSTzung-Bi Shih dev_dbg(component->dev, "set sdmode to 0"); 46af5adf12SKenneth Westfield } 47af5adf12SKenneth Westfield 48af5adf12SKenneth Westfield return 0; 49af5adf12SKenneth Westfield } 50af5adf12SKenneth Westfield 51af5adf12SKenneth Westfield static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = { 52af5adf12SKenneth Westfield SND_SOC_DAPM_OUTPUT("Speaker"), 53128f825aSTzung-Bi Shih SND_SOC_DAPM_OUT_DRV_E("SD_MODE", SND_SOC_NOPM, 0, 0, NULL, 0, 54128f825aSTzung-Bi Shih max98357a_sdmode_event, 55128f825aSTzung-Bi Shih SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 56af5adf12SKenneth Westfield }; 57af5adf12SKenneth Westfield 58af5adf12SKenneth Westfield static const struct snd_soc_dapm_route max98357a_dapm_routes[] = { 59128f825aSTzung-Bi Shih {"SD_MODE", NULL, "HiFi Playback"}, 60128f825aSTzung-Bi Shih {"Speaker", NULL, "SD_MODE"}, 61af5adf12SKenneth Westfield }; 62af5adf12SKenneth Westfield 634b51e9f1SKuninori Morimoto static const struct snd_soc_component_driver max98357a_component_driver = { 64af5adf12SKenneth Westfield .dapm_widgets = max98357a_dapm_widgets, 65af5adf12SKenneth Westfield .num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets), 66af5adf12SKenneth Westfield .dapm_routes = max98357a_dapm_routes, 67af5adf12SKenneth Westfield .num_dapm_routes = ARRAY_SIZE(max98357a_dapm_routes), 684b51e9f1SKuninori Morimoto .idle_bias_on = 1, 694b51e9f1SKuninori Morimoto .use_pmdown_time = 1, 704b51e9f1SKuninori Morimoto .endianness = 1, 714b51e9f1SKuninori Morimoto .non_legacy_dai_naming = 1, 72af5adf12SKenneth Westfield }; 73af5adf12SKenneth Westfield 74af5adf12SKenneth Westfield static struct snd_soc_dai_driver max98357a_dai_driver = { 7592b2ad2cSKenneth Westfield .name = "HiFi", 76af5adf12SKenneth Westfield .playback = { 7792b2ad2cSKenneth Westfield .stream_name = "HiFi Playback", 78af5adf12SKenneth Westfield .formats = SNDRV_PCM_FMTBIT_S16 | 79af5adf12SKenneth Westfield SNDRV_PCM_FMTBIT_S24 | 80af5adf12SKenneth Westfield SNDRV_PCM_FMTBIT_S32, 81af5adf12SKenneth Westfield .rates = SNDRV_PCM_RATE_8000 | 82af5adf12SKenneth Westfield SNDRV_PCM_RATE_16000 | 83fdf34366SJerome Brunet SNDRV_PCM_RATE_32000 | 84fdf34366SJerome Brunet SNDRV_PCM_RATE_44100 | 85af5adf12SKenneth Westfield SNDRV_PCM_RATE_48000 | 86fdf34366SJerome Brunet SNDRV_PCM_RATE_88200 | 87af5adf12SKenneth Westfield SNDRV_PCM_RATE_96000, 88af5adf12SKenneth Westfield .rate_min = 8000, 89af5adf12SKenneth Westfield .rate_max = 96000, 90af5adf12SKenneth Westfield .channels_min = 1, 91af5adf12SKenneth Westfield .channels_max = 2, 92af5adf12SKenneth Westfield }, 93af5adf12SKenneth Westfield }; 94af5adf12SKenneth Westfield 95af5adf12SKenneth Westfield static int max98357a_platform_probe(struct platform_device *pdev) 96af5adf12SKenneth Westfield { 97cec5b01fSMac Chiang struct max98357a_priv *max98357a; 98cec5b01fSMac Chiang int ret; 99bcd93822STzung-Bi Shih 100cec5b01fSMac Chiang max98357a = devm_kzalloc(&pdev->dev, sizeof(*max98357a), GFP_KERNEL); 101cec5b01fSMac Chiang if (!max98357a) 102cec5b01fSMac Chiang return -ENOMEM; 103cec5b01fSMac Chiang 104cec5b01fSMac Chiang max98357a->sdmode = devm_gpiod_get_optional(&pdev->dev, 105bcd93822STzung-Bi Shih "sdmode", GPIOD_OUT_LOW); 106cec5b01fSMac Chiang if (IS_ERR(max98357a->sdmode)) 107cec5b01fSMac Chiang return PTR_ERR(max98357a->sdmode); 108cec5b01fSMac Chiang 109cec5b01fSMac Chiang ret = device_property_read_u32(&pdev->dev, "sdmode-delay", 110cec5b01fSMac Chiang &max98357a->sdmode_delay); 111cec5b01fSMac Chiang if (ret) { 112cec5b01fSMac Chiang max98357a->sdmode_delay = 0; 113cec5b01fSMac Chiang dev_dbg(&pdev->dev, 1146cd249cfSTzung-Bi Shih "no optional property 'sdmode-delay' found, " 1156cd249cfSTzung-Bi Shih "default: no delay\n"); 116cec5b01fSMac Chiang } 117cec5b01fSMac Chiang 118cec5b01fSMac Chiang dev_set_drvdata(&pdev->dev, max98357a); 119cec5b01fSMac Chiang 1204b51e9f1SKuninori Morimoto return devm_snd_soc_register_component(&pdev->dev, 1214b51e9f1SKuninori Morimoto &max98357a_component_driver, 122af5adf12SKenneth Westfield &max98357a_dai_driver, 1); 123af5adf12SKenneth Westfield } 124af5adf12SKenneth Westfield 125af5adf12SKenneth Westfield #ifdef CONFIG_OF 126af5adf12SKenneth Westfield static const struct of_device_id max98357a_device_id[] = { 1277ff5eabcSKenneth Westfield { .compatible = "maxim,max98357a" }, 1283aad07b8STzung-Bi Shih { .compatible = "maxim,max98360a" }, 129af5adf12SKenneth Westfield {} 130af5adf12SKenneth Westfield }; 1313efa130dSMark Brown MODULE_DEVICE_TABLE(of, max98357a_device_id); 132af5adf12SKenneth Westfield #endif 133af5adf12SKenneth Westfield 1345c27087eSRohit Ainapure #ifdef CONFIG_ACPI 1355c27087eSRohit Ainapure static const struct acpi_device_id max98357a_acpi_match[] = { 1365c27087eSRohit Ainapure { "MX98357A", 0 }, 1371a0f2433SYong Zhi { "MX98360A", 0 }, 1385c27087eSRohit Ainapure {}, 1395c27087eSRohit Ainapure }; 1405c27087eSRohit Ainapure MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match); 1415c27087eSRohit Ainapure #endif 1425c27087eSRohit Ainapure 143af5adf12SKenneth Westfield static struct platform_driver max98357a_platform_driver = { 144af5adf12SKenneth Westfield .driver = { 1457ff5eabcSKenneth Westfield .name = "max98357a", 146af5adf12SKenneth Westfield .of_match_table = of_match_ptr(max98357a_device_id), 1475c27087eSRohit Ainapure .acpi_match_table = ACPI_PTR(max98357a_acpi_match), 148af5adf12SKenneth Westfield }, 149af5adf12SKenneth Westfield .probe = max98357a_platform_probe, 150af5adf12SKenneth Westfield }; 151af5adf12SKenneth Westfield module_platform_driver(max98357a_platform_driver); 152af5adf12SKenneth Westfield 153af5adf12SKenneth Westfield MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver"); 154af5adf12SKenneth Westfield MODULE_LICENSE("GPL v2"); 155