Merge "ASoC: ep92: Add external mclk support" (44743947) · Commits · e / devices / android_kernel_oneplus_sm7250

asoc/codecs/ep92/ep92.c

+127 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
		* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
		*/

		#include <linux/init.h>
		@@ -44,6 +44,61 @@ static const unsigned int ep92_dsd_freq_table[4] = {
		64, 128, 256, 0
		};

		/* EP92 register default values */
		static struct reg_default ep92_reg_defaults[] = {
		{EP92_BI_VENDOR_ID_0, 0x17},
		{EP92_BI_VENDOR_ID_1, 0x7A},
		{EP92_BI_DEVICE_ID_0, 0x94},
		{EP92_BI_DEVICE_ID_1, 0xA3},
		{EP92_BI_VERSION_NUM, 0x10},
		{EP92_BI_VERSION_YEAR, 0x09},
		{EP92_BI_VERSION_MONTH, 0x07},
		{EP92_BI_VERSION_DATE, 0x06},
		{EP92_BI_GENERAL_INFO_0, 0x00},
		{EP92_BI_GENERAL_INFO_1, 0x00},
		{EP92_BI_GENERAL_INFO_2, 0x00},
		{EP92_BI_GENERAL_INFO_3, 0x00},
		{EP92_BI_GENERAL_INFO_4, 0x00},
		{EP92_BI_GENERAL_INFO_5, 0x00},
		{EP92_BI_GENERAL_INFO_6, 0x00},
		{EP92_ISP_MODE_ENTER_ISP, 0x00},
		{EP92_GENERAL_CONTROL_0, 0x20},
		{EP92_GENERAL_CONTROL_1, 0x00},
		{EP92_GENERAL_CONTROL_2, 0x00},
		{EP92_GENERAL_CONTROL_3, 0x10},
		{EP92_GENERAL_CONTROL_4, 0x00},
		{EP92_CEC_EVENT_CODE, 0x00},
		{EP92_CEC_EVENT_PARAM_1, 0x00},
		{EP92_CEC_EVENT_PARAM_2, 0x00},
		{EP92_CEC_EVENT_PARAM_3, 0x00},
		{EP92_CEC_EVENT_PARAM_4, 0x00},
		{EP92_AUDIO_INFO_SYSTEM_STATUS_0, 0x00},
		{EP92_AUDIO_INFO_SYSTEM_STATUS_1, 0x00},
		{EP92_AUDIO_INFO_AUDIO_STATUS, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_0, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_1, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_2, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_3, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_4, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_0, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_1, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_2, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_3, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_4, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_5, 0x00},
		{EP92_OTHER_PACKETS_HDMI_VS_0, 0x00},
		{EP92_OTHER_PACKETS_HDMI_VS_1, 0x00},
		{EP92_OTHER_PACKETS_ACP_PACKET, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_0, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_1, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_2, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_3, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_4, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_0, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_1, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_2, 0x00},
		};

		static bool ep92_volatile_register(struct device *dev, unsigned int reg)
		{
		/* do not cache register state in regmap */
		@@ -115,6 +170,77 @@ struct ep92_pdata {
		#endif /* CONFIG_DEBUG_FS */
		};

		struct ep92_mclk_cfg_info {
		uint32_t in_sample_rate;
		uint32_t out_mclk_freq;
		uint8_t mul_val;
		};

		#define EP92_MCLK_MUL_512 0x3
		#define EP92_MCLK_MUL_384 0x2
		#define EP92_MCLK_MUL_256 0x1
		#define EP92_MCLK_MUL_128 0x0
		#define EP92_MCLK_MUL_MASK 0x3

		/**
		* ep92_set_ext_mclk - Configure the mclk based on sample freq
		*
		* @codec: handle pointer to ep92 codec
		* @mclk_freq: mclk frequency to be set
		*
		* Returns 0 for success or appropriate negative error code
		*/
		int ep92_set_ext_mclk(struct snd_soc_codec *codec, uint32_t mclk_freq)
		{
		unsigned int samp_freq = 0;
		struct ep92_pdata *ep92 = NULL;
		uint8_t value = 0;
		int ret = 0;

		if (!codec)
		return -EINVAL;

		ep92 = snd_soc_codec_get_drvdata(codec);

		samp_freq = ep92_samp_freq_table[(ep92->ai.audio_status) &
		EP92_AI_RATE_MASK];

		if (!mclk_freq \|\| (mclk_freq % samp_freq)) {
		pr_err("%s incompatbile mclk:%u and sample freq:%u\n",
		__func__, mclk_freq, samp_freq);
		return -EINVAL;
		}

		switch (mclk_freq / samp_freq) {
		case 512:
		value = EP92_MCLK_MUL_512;
		break;
		case 384:
		value = EP92_MCLK_MUL_384;
		break;
		case 256:
		value = EP92_MCLK_MUL_256;
		break;
		case 128:
		value = EP92_MCLK_MUL_128;
		break;
		default:
		dev_err(codec->dev, "unsupported mclk:%u for sample freq:%u\n",
		mclk_freq, samp_freq);
		return -EINVAL;
		}

		pr_debug("%s mclk:%u, in sample freq:%u, write reg:0x%02x val:0x%02x\n",
		__func__, mclk_freq, samp_freq,
		EP92_GENERAL_CONTROL_2, EP92_MCLK_MUL_MASK & value);

		ret = snd_soc_update_bits(codec, EP92_GENERAL_CONTROL_2,
		EP92_MCLK_MUL_MASK, value);

		return (((ret == 0) \|\| (ret == 1)) ? 0 : ret);
		}
		EXPORT_SYMBOL(ep92_set_ext_mclk);

		#if IS_ENABLED(CONFIG_DEBUG_FS)
		static int debugfs_codec_open_op(struct inode inode, struct file file)
		{

asoc/codecs/ep92/ep92.h

+3 −58

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0-only */
		/*
		* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
		* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
		*/

		#ifndef __EP92_H__
		@@ -69,63 +69,6 @@

		#define EP92_MAX_REGISTER_ADDR EP92_OTHER_PACKETS_GC_PACKET_2


		/* EP92 register default values */
		static struct reg_default ep92_reg_defaults[] = {
		{EP92_BI_VENDOR_ID_0, 0x17},
		{EP92_BI_VENDOR_ID_1, 0x7A},
		{EP92_BI_DEVICE_ID_0, 0x94},
		{EP92_BI_DEVICE_ID_1, 0xA3},
		{EP92_BI_VERSION_NUM, 0x10},
		{EP92_BI_VERSION_YEAR, 0x09},
		{EP92_BI_VERSION_MONTH, 0x07},
		{EP92_BI_VERSION_DATE, 0x06},
		{EP92_BI_GENERAL_INFO_0, 0x00},
		{EP92_BI_GENERAL_INFO_1, 0x00},
		{EP92_BI_GENERAL_INFO_2, 0x00},
		{EP92_BI_GENERAL_INFO_3, 0x00},
		{EP92_BI_GENERAL_INFO_4, 0x00},
		{EP92_BI_GENERAL_INFO_5, 0x00},
		{EP92_BI_GENERAL_INFO_6, 0x00},
		{EP92_ISP_MODE_ENTER_ISP, 0x00},
		{EP92_GENERAL_CONTROL_0, 0x20},
		{EP92_GENERAL_CONTROL_1, 0x00},
		{EP92_GENERAL_CONTROL_2, 0x00},
		{EP92_GENERAL_CONTROL_3, 0x10},
		{EP92_GENERAL_CONTROL_4, 0x00},
		{EP92_CEC_EVENT_CODE, 0x00},
		{EP92_CEC_EVENT_PARAM_1, 0x00},
		{EP92_CEC_EVENT_PARAM_2, 0x00},
		{EP92_CEC_EVENT_PARAM_3, 0x00},
		{EP92_CEC_EVENT_PARAM_4, 0x00},
		{EP92_AUDIO_INFO_SYSTEM_STATUS_0, 0x00},
		{EP92_AUDIO_INFO_SYSTEM_STATUS_1, 0x00},
		{EP92_AUDIO_INFO_AUDIO_STATUS, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_0, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_1, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_2, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_3, 0x00},
		{EP92_AUDIO_INFO_CHANNEL_STATUS_4, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_0, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_1, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_2, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_3, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_4, 0x00},
		{EP92_AUDIO_INFO_ADO_INFO_FRAME_5, 0x00},
		{EP92_OTHER_PACKETS_HDMI_VS_0, 0x00},
		{EP92_OTHER_PACKETS_HDMI_VS_1, 0x00},
		{EP92_OTHER_PACKETS_ACP_PACKET, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_0, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_1, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_2, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_3, 0x00},
		{EP92_OTHER_PACKETS_AVI_INFO_FRAME_4, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_0, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_1, 0x00},
		{EP92_OTHER_PACKETS_GC_PACKET_2, 0x00},
		};


		/* shift/masks for register bits
		* GI = General Info
		* GC = General Control
		@@ -211,4 +154,6 @@ enum {
		EP92_KCTL_MAX
		};

		int ep92_set_ext_mclk(struct snd_soc_codec *codec, uint32_t mclk_freq);

		#endif /* __EP92_H__ */