Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * sam9g20_wm8731  --  SoC audio for AT91SAM9G20-based
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * 			ATMEL AT91SAM9G20ek board.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *  Copyright (C) 2005 SAN People
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Copyright (C) 2008 Atmel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Based on ati_b1_wm8731.c by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * Frank Mandarino <fmandarino@endrelia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * Copyright 2006 Endrelia Technologies Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Based on corgi.c by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Copyright 2005 Wolfson Microelectronics PLC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * Copyright 2005 Openedhand Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/atmel-ssc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <sound/pcm_params.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <sound/soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include "../codecs/wm8731.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include "atmel-pcm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include "atmel_ssc_dai.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define MCLK_RATE 12000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  * As shipped the board does not have inputs.  However, it is relatively
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44)  * straightforward to modify the board to hook them up so support is left
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45)  * in the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #undef ENABLE_MIC_INPUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static struct clk *mclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) static int at91sam9g20ek_set_bias_level(struct snd_soc_card *card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 					struct snd_soc_dapm_context *dapm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 					enum snd_soc_bias_level level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	static int mclk_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	switch (level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	case SND_SOC_BIAS_ON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	case SND_SOC_BIAS_PREPARE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		if (!mclk_on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 			ret = clk_enable(mclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 			mclk_on = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	case SND_SOC_BIAS_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	case SND_SOC_BIAS_STANDBY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		if (mclk_on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			clk_disable(mclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		mclk_on = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static const struct snd_soc_dapm_widget at91sam9g20ek_dapm_widgets[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	SND_SOC_DAPM_MIC("Int Mic", NULL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static const struct snd_soc_dapm_route intercon[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	/* speaker connected to LHPOUT/RHPOUT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	{"Ext Spk", NULL, "LHPOUT"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	{"Ext Spk", NULL, "RHPOUT"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	/* mic is connected to Mic Jack, with WM8731 Mic Bias */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	{"MICIN", NULL, "Mic Bias"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	{"Mic Bias", NULL, "Int Mic"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95)  * Logic for a wm8731 as connected on a at91sam9g20ek board.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) static int at91sam9g20ek_wm8731_init(struct snd_soc_pcm_runtime *rtd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct device *dev = rtd->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	dev_dbg(dev, "%s called\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_MCLK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				     MCLK_RATE, SND_SOC_CLOCK_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		dev_err(dev, "Failed to set WM8731 SYSCLK: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #ifndef ENABLE_MIC_INPUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	snd_soc_dapm_nc_pin(&rtd->card->dapm, "Int Mic");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) SND_SOC_DAILINK_DEFS(pcm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	DAILINK_COMP_ARRAY(COMP_CPU("at91rm9200_ssc.0")),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	DAILINK_COMP_ARRAY(COMP_CODEC("wm8731.0-001b", "wm8731-hifi")),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	DAILINK_COMP_ARRAY(COMP_PLATFORM("at91rm9200_ssc.0")));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static struct snd_soc_dai_link at91sam9g20ek_dai = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	.name = "WM8731",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	.stream_name = "WM8731 PCM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	.init = at91sam9g20ek_wm8731_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		   SND_SOC_DAIFMT_CBM_CFM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	SND_SOC_DAILINK_REG(pcm),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static struct snd_soc_card snd_soc_at91sam9g20ek = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	.name = "AT91SAMG20-EK",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	.dai_link = &at91sam9g20ek_dai,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	.num_links = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	.set_bias_level = at91sam9g20ek_set_bias_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	.dapm_widgets = at91sam9g20ek_dapm_widgets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	.num_dapm_widgets = ARRAY_SIZE(at91sam9g20ek_dapm_widgets),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	.dapm_routes = intercon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	.num_dapm_routes = ARRAY_SIZE(intercon),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	.fully_routed = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	struct device_node *np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct device_node *codec_np, *cpu_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	struct clk *pllb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct snd_soc_card *card = &snd_soc_at91sam9g20ek;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	if (!np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	ret = atmel_ssc_set_audio(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		dev_err(&pdev->dev, "ssc channel is not valid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	 * Codec MCLK is supplied by PCK0 - set it up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	mclk = clk_get(NULL, "pck0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (IS_ERR(mclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		dev_err(&pdev->dev, "Failed to get MCLK\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		ret = PTR_ERR(mclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	pllb = clk_get(NULL, "pllb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	if (IS_ERR(pllb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		dev_err(&pdev->dev, "Failed to get PLLB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		ret = PTR_ERR(pllb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		goto err_mclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	ret = clk_set_parent(mclk, pllb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	clk_put(pllb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		dev_err(&pdev->dev, "Failed to set MCLK parent\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		goto err_mclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	clk_set_rate(mclk, MCLK_RATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	card->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	/* Parse device node info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	ret = snd_soc_of_parse_card_name(card, "atmel,model");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	ret = snd_soc_of_parse_audio_routing(card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		"atmel,audio-routing");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	/* Parse codec info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	at91sam9g20ek_dai.codecs->name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	codec_np = of_parse_phandle(np, "atmel,audio-codec", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	if (!codec_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		dev_err(&pdev->dev, "codec info missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	at91sam9g20ek_dai.codecs->of_node = codec_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	/* Parse dai and platform info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	at91sam9g20ek_dai.cpus->dai_name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	at91sam9g20ek_dai.platforms->name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (!cpu_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		dev_err(&pdev->dev, "dai and pcm info missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		of_node_put(codec_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	at91sam9g20ek_dai.cpus->of_node = cpu_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	at91sam9g20ek_dai.platforms->of_node = cpu_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	of_node_put(codec_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	of_node_put(cpu_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	ret = snd_soc_register_card(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		dev_err(&pdev->dev, "snd_soc_register_card() failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) err_mclk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	clk_put(mclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	mclk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	atmel_ssc_put_audio(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static int at91sam9g20ek_audio_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	struct snd_soc_card *card = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	clk_disable(mclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	mclk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	snd_soc_unregister_card(card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	atmel_ssc_put_audio(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static const struct of_device_id at91sam9g20ek_wm8731_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	{ .compatible = "atmel,at91sam9g20ek-wm8731-audio", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_DEVICE_TABLE(of, at91sam9g20ek_wm8731_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static struct platform_driver at91sam9g20ek_audio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		.name	= "at91sam9g20ek-audio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		.of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.probe	= at91sam9g20ek_audio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	.remove	= at91sam9g20ek_audio_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) module_platform_driver(at91sam9g20ek_audio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) /* Module information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) MODULE_DESCRIPTION("ALSA SoC AT91SAM9G20EK_WM8731");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) MODULE_ALIAS("platform:at91sam9g20ek-audio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) MODULE_LICENSE("GPL");