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> 808d0a55cSKenneth Westfield #include <linux/device.h> 908d0a55cSKenneth Westfield #include <linux/err.h> 10af5adf12SKenneth Westfield #include <linux/gpio.h> 115c8be987SVincent Stehlé #include <linux/gpio/consumer.h> 1208d0a55cSKenneth Westfield #include <linux/kernel.h> 1308d0a55cSKenneth Westfield #include <linux/mod_devicetable.h> 1408d0a55cSKenneth Westfield #include <linux/module.h> 1508d0a55cSKenneth Westfield #include <linux/of.h> 1608d0a55cSKenneth Westfield #include <linux/platform_device.h> 1708d0a55cSKenneth Westfield #include <sound/pcm.h> 18af5adf12SKenneth Westfield #include <sound/soc.h> 1908d0a55cSKenneth Westfield #include <sound/soc-dai.h> 2008d0a55cSKenneth Westfield #include <sound/soc-dapm.h> 21af5adf12SKenneth Westfield 22cec5b01fSMac Chiang struct max98357a_priv { 23cec5b01fSMac Chiang struct gpio_desc *sdmode; 24cec5b01fSMac Chiang unsigned int sdmode_delay; 25cec5b01fSMac Chiang }; 26cec5b01fSMac Chiang 27af5adf12SKenneth Westfield static int max98357a_daiops_trigger(struct snd_pcm_substream *substream, 28af5adf12SKenneth Westfield int cmd, struct snd_soc_dai *dai) 29af5adf12SKenneth Westfield { 30cec5b01fSMac Chiang struct max98357a_priv *max98357a = snd_soc_dai_get_drvdata(dai); 31af5adf12SKenneth Westfield 32cec5b01fSMac Chiang if (!max98357a->sdmode) 335119222fSAnatol Pomozov return 0; 345119222fSAnatol Pomozov 35af5adf12SKenneth Westfield switch (cmd) { 36af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_START: 37af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_RESUME: 38af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 396cd249cfSTzung-Bi Shih mdelay(max98357a->sdmode_delay); 406cd249cfSTzung-Bi Shih gpiod_set_value(max98357a->sdmode, 1); 41af5adf12SKenneth Westfield break; 42af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_STOP: 43af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_SUSPEND: 44af5adf12SKenneth Westfield case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 45cec5b01fSMac Chiang gpiod_set_value(max98357a->sdmode, 0); 46af5adf12SKenneth Westfield break; 47af5adf12SKenneth Westfield } 48af5adf12SKenneth Westfield 49af5adf12SKenneth Westfield return 0; 50af5adf12SKenneth Westfield } 51af5adf12SKenneth Westfield 52af5adf12SKenneth Westfield static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = { 53af5adf12SKenneth Westfield SND_SOC_DAPM_OUTPUT("Speaker"), 54af5adf12SKenneth Westfield }; 55af5adf12SKenneth Westfield 56af5adf12SKenneth Westfield static const struct snd_soc_dapm_route max98357a_dapm_routes[] = { 57508e6195SAnatol Pomozov {"Speaker", NULL, "HiFi Playback"}, 58af5adf12SKenneth Westfield }; 59af5adf12SKenneth Westfield 604b51e9f1SKuninori Morimoto static const struct snd_soc_component_driver max98357a_component_driver = { 61af5adf12SKenneth Westfield .dapm_widgets = max98357a_dapm_widgets, 62af5adf12SKenneth Westfield .num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets), 63af5adf12SKenneth Westfield .dapm_routes = max98357a_dapm_routes, 64af5adf12SKenneth Westfield .num_dapm_routes = ARRAY_SIZE(max98357a_dapm_routes), 654b51e9f1SKuninori Morimoto .idle_bias_on = 1, 664b51e9f1SKuninori Morimoto .use_pmdown_time = 1, 674b51e9f1SKuninori Morimoto .endianness = 1, 684b51e9f1SKuninori Morimoto .non_legacy_dai_naming = 1, 69af5adf12SKenneth Westfield }; 70af5adf12SKenneth Westfield 7164793047SAxel Lin static const struct snd_soc_dai_ops max98357a_dai_ops = { 72af5adf12SKenneth Westfield .trigger = max98357a_daiops_trigger, 73af5adf12SKenneth Westfield }; 74af5adf12SKenneth Westfield 75af5adf12SKenneth Westfield static struct snd_soc_dai_driver max98357a_dai_driver = { 7692b2ad2cSKenneth Westfield .name = "HiFi", 77af5adf12SKenneth Westfield .playback = { 7892b2ad2cSKenneth Westfield .stream_name = "HiFi Playback", 79af5adf12SKenneth Westfield .formats = SNDRV_PCM_FMTBIT_S16 | 80af5adf12SKenneth Westfield SNDRV_PCM_FMTBIT_S24 | 81af5adf12SKenneth Westfield SNDRV_PCM_FMTBIT_S32, 82af5adf12SKenneth Westfield .rates = SNDRV_PCM_RATE_8000 | 83af5adf12SKenneth Westfield SNDRV_PCM_RATE_16000 | 84fdf34366SJerome Brunet SNDRV_PCM_RATE_32000 | 85fdf34366SJerome Brunet SNDRV_PCM_RATE_44100 | 86af5adf12SKenneth Westfield SNDRV_PCM_RATE_48000 | 87fdf34366SJerome Brunet SNDRV_PCM_RATE_88200 | 88af5adf12SKenneth Westfield SNDRV_PCM_RATE_96000, 89af5adf12SKenneth Westfield .rate_min = 8000, 90af5adf12SKenneth Westfield .rate_max = 96000, 91af5adf12SKenneth Westfield .channels_min = 1, 92af5adf12SKenneth Westfield .channels_max = 2, 93af5adf12SKenneth Westfield }, 94af5adf12SKenneth Westfield .ops = &max98357a_dai_ops, 95af5adf12SKenneth Westfield }; 96af5adf12SKenneth Westfield 97af5adf12SKenneth Westfield static int max98357a_platform_probe(struct platform_device *pdev) 98af5adf12SKenneth Westfield { 99cec5b01fSMac Chiang struct max98357a_priv *max98357a; 100cec5b01fSMac Chiang int ret; 101bcd93822STzung-Bi Shih 102cec5b01fSMac Chiang max98357a = devm_kzalloc(&pdev->dev, sizeof(*max98357a), GFP_KERNEL); 103cec5b01fSMac Chiang if (!max98357a) 104cec5b01fSMac Chiang return -ENOMEM; 105cec5b01fSMac Chiang 106cec5b01fSMac Chiang max98357a->sdmode = devm_gpiod_get_optional(&pdev->dev, 107bcd93822STzung-Bi Shih "sdmode", GPIOD_OUT_LOW); 108cec5b01fSMac Chiang if (IS_ERR(max98357a->sdmode)) 109cec5b01fSMac Chiang return PTR_ERR(max98357a->sdmode); 110cec5b01fSMac Chiang 111cec5b01fSMac Chiang ret = device_property_read_u32(&pdev->dev, "sdmode-delay", 112cec5b01fSMac Chiang &max98357a->sdmode_delay); 113cec5b01fSMac Chiang if (ret) { 114cec5b01fSMac Chiang max98357a->sdmode_delay = 0; 115cec5b01fSMac Chiang dev_dbg(&pdev->dev, 1166cd249cfSTzung-Bi Shih "no optional property 'sdmode-delay' found, " 1176cd249cfSTzung-Bi Shih "default: no delay\n"); 118cec5b01fSMac Chiang } 119cec5b01fSMac Chiang 120cec5b01fSMac Chiang dev_set_drvdata(&pdev->dev, max98357a); 121cec5b01fSMac Chiang 1224b51e9f1SKuninori Morimoto return devm_snd_soc_register_component(&pdev->dev, 1234b51e9f1SKuninori Morimoto &max98357a_component_driver, 124af5adf12SKenneth Westfield &max98357a_dai_driver, 1); 125af5adf12SKenneth Westfield } 126af5adf12SKenneth Westfield 127af5adf12SKenneth Westfield #ifdef CONFIG_OF 128af5adf12SKenneth Westfield static const struct of_device_id max98357a_device_id[] = { 1297ff5eabcSKenneth Westfield { .compatible = "maxim,max98357a" }, 130af5adf12SKenneth Westfield {} 131af5adf12SKenneth Westfield }; 1323efa130dSMark Brown MODULE_DEVICE_TABLE(of, max98357a_device_id); 133af5adf12SKenneth Westfield #endif 134af5adf12SKenneth Westfield 1355c27087eSRohit Ainapure #ifdef CONFIG_ACPI 1365c27087eSRohit Ainapure static const struct acpi_device_id max98357a_acpi_match[] = { 1375c27087eSRohit Ainapure { "MX98357A", 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