501 lines
13 KiB
C
501 lines
13 KiB
C
/*
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* sound\soc\sunxi\sunxi_ahub_cpudai.c
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* (C) Copyright 2014-2018
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Wolfgang huang <huangjinhui@allwinnertech.com>
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*
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* some simple description for this code
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/dma/sunxi-dma.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include "sunxi-pcm.h"
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#include "sunxi_ahub.h"
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#define DRV_NAME "sunxi-ahub-cpudai"
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struct sunxi_ahub_cpudai_priv {
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unsigned int id;
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int karaoke_mode;
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struct regmap *regmap;
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struct sunxi_dma_params playback_dma_param;
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struct sunxi_dma_params capture_dma_param;
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};
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static int startup_playback_cnt;
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static int startup_capture_cnt;
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static int karaoke_cnt;
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int sunxi_ahub_cpudai_init(void)
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{
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startup_playback_cnt = 0;
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startup_capture_cnt = 0;
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karaoke_cnt = 0;
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return 0;
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}
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EXPORT_SYMBOL_GPL(sunxi_ahub_cpudai_init);
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static int sunxi_ahub_i2s_playback_route_enable(
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai)
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{
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int i, reg_bit;
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unsigned int reg_val;
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/* first check it's on karaoke mode? */
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reg_val = sunxi_ahub_read(SUNXI_AHUB_DAM_RX0_SRC(0));
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if (!reg_val) {
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reg_val = sunxi_ahub_read(
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SUNXI_AHUB_DAM_RX1_SRC(0));
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if (!reg_val)
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goto no_karaook_handle;
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}
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for (i = 0; i < 4; i++) {
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reg_val = sunxi_ahub_read(
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SUNXI_AHUB_I2S_RXCONT(i));
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if (reg_val & (1<<19)) {
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/* I2S0...HDMI...I2S2...CVBS... */
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reg_bit = 23 - i;
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/* setting the rst & gating register for I2S module */
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sunxi_ahub_update_bits(
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SUNXI_AHUB_RST,
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(1<<reg_bit), (1<<reg_bit));
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sunxi_ahub_update_bits(
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SUNXI_AHUB_GAT,
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(1<<reg_bit), (1<<reg_bit));
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sunxi_ahub_update_bits(
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SUNXI_AHUB_I2S_CTL(i),
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(1<<I2S_CTL_TXEN), (1<<I2S_CTL_TXEN));
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}
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}
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sunxi_ahub_cpudai->karaoke_mode = 1;
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karaoke_cnt++;
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return 0;
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no_karaook_handle:
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switch (sunxi_ahub_cpudai->id) {
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case 0:
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/* operation HDMI I2S module */
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S1_RST), (1<<I2S1_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S1_GAT), (1<<I2S1_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(1),
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(1<<I2S_CTL_TXEN), (1<<I2S_CTL_TXEN));
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break;
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case 1:
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/* operation CVBS module */
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S3_RST), (1<<I2S3_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S3_GAT), (1<<I2S3_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(3),
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(1<<I2S_CTL_TXEN), (1<<I2S_CTL_TXEN));
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break;
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case 2:
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/* operation I2S2 for bluetooth */
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S2_RST), (1<<I2S2_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S2_GAT), (1<<I2S2_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(2),
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(1<<I2S_CTL_TXEN), (1<<I2S_CTL_TXEN));
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break;
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default:
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break;
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}
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sunxi_ahub_cpudai->karaoke_mode = 0;
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return 0;
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}
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static int sunxi_ahub_i2s_playback_route_disable(
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai)
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{
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unsigned int reg_val;
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int i;
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if (sunxi_ahub_cpudai->karaoke_mode) {
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if (--karaoke_cnt == 0) {
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for (i = 0; i < 4; i++) {
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reg_val = sunxi_ahub_read(
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SUNXI_AHUB_I2S_CTL(i));
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if (reg_val & (1 << I2S_CTL_TXEN))
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/* I2S0...HDMI...I2S2...CVBS... */
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sunxi_ahub_update_bits(
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SUNXI_AHUB_I2S_CTL(i),
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(1<<I2S_CTL_TXEN),
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(0<<I2S_CTL_TXEN));
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}
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}
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} else {
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switch (sunxi_ahub_cpudai->id) {
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case 0:
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/* operation HDMI I2S module */
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(1),
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(1<<I2S_CTL_TXEN), (0<<I2S_CTL_TXEN));
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break;
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case 1:
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/* operation CVBS module */
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(3),
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(1<<I2S_CTL_TXEN), (0<<I2S_CTL_TXEN));
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break;
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case 2:
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/* operation I2S2 for bluetooth */
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(2),
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(1<<I2S_CTL_TXEN), (0<<I2S_CTL_TXEN));
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break;
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default:
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break;
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}
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}
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return 0;
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}
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static int sunxi_ahub_i2s_capture_route_enable(
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai)
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{
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int i2s0_cap_bit = 27;
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/* HDMI just for support debug */
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int i2s1_cap_bit = 26;
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int i2s2_cap_bit = 25;
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int i2s3_cap_bit = 23;
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unsigned int reg_val;
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reg_val = sunxi_ahub_read(
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SUNXI_AHUB_APBIF_RXFIFO_CONT(sunxi_ahub_cpudai->id));
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if (reg_val == (1<<i2s0_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S0_RST), (1<<I2S0_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S0_GAT), (1<<I2S0_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(0),
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(1<<I2S_CTL_RXEN), (1<<I2S_CTL_RXEN));
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}
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if (reg_val == (1 << i2s1_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1 << I2S1_RST), (1 << I2S1_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1 << I2S1_GAT), (1 << I2S1_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(1),
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(1 << I2S_CTL_RXEN), (1 << I2S_CTL_RXEN));
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}
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if (reg_val == (1<<i2s2_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S2_RST), (1<<I2S2_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S2_GAT), (1<<I2S2_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(2),
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(1<<I2S_CTL_RXEN), (1<<I2S_CTL_RXEN));
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}
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if (reg_val == (1<<i2s3_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_RST,
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(1<<I2S3_RST), (1<<I2S3_RST));
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sunxi_ahub_update_bits(SUNXI_AHUB_GAT,
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(1<<I2S3_GAT), (1<<I2S3_GAT));
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(3),
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(1<<I2S_CTL_RXEN), (1<<I2S_CTL_RXEN));
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}
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return 0;
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}
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static int sunxi_ahub_i2s_capture_route_disable(
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai)
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{
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int i2s0_cap_bit = 27;
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/* HDMI just for support debug */
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int i2s1_cap_bit = 26;
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int i2s2_cap_bit = 25;
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int i2s3_cap_bit = 23;
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unsigned int reg_val;
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reg_val = sunxi_ahub_read(
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SUNXI_AHUB_APBIF_RXFIFO_CONT(sunxi_ahub_cpudai->id));
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if (reg_val == (1<<i2s0_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(0),
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(1<<I2S_CTL_RXEN), (0<<I2S_CTL_RXEN));
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}
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if (reg_val == (1 << i2s1_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(1),
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(1 << I2S_CTL_RXEN), (0 << I2S_CTL_RXEN));
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}
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if (reg_val == (1<<i2s2_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(2),
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(1<<I2S_CTL_RXEN), (0<<I2S_CTL_RXEN));
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}
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if (reg_val == (1<<i2s3_cap_bit)) {
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sunxi_ahub_update_bits(SUNXI_AHUB_I2S_CTL(3),
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(1<<I2S_CTL_RXEN), (0<<I2S_CTL_RXEN));
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}
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return 0;
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}
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static int sunxi_ahub_cpudai_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai =
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snd_soc_dai_get_drvdata(dai);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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snd_soc_dai_set_dma_data(dai, substream,
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&sunxi_ahub_cpudai->playback_dma_param);
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else
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snd_soc_dai_set_dma_data(dai, substream,
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&sunxi_ahub_cpudai->capture_dma_param);
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return 0;
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}
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static int sunxi_ahub_cpudai_trigger(struct snd_pcm_substream *substream,
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int cmd, struct snd_soc_dai *dai)
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{
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai =
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snd_soc_dai_get_drvdata(dai);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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if (startup_playback_cnt++ == 0)
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sunxi_ahub_i2s_playback_route_enable(
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sunxi_ahub_cpudai);
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mdelay(1);
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_TX_CTL(sunxi_ahub_cpudai->id),
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(1<<APBIF_TX_START), (1<<APBIF_TX_START));
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_TX_IRQ_CTL(
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sunxi_ahub_cpudai->id),
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(1<<APBIF_TX_DRQ), (1<<APBIF_TX_DRQ));
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if (startup_playback_cnt++ > 1)
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sunxi_ahub_i2s_playback_route_enable(
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sunxi_ahub_cpudai);
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} else {
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if (startup_capture_cnt++ == 0) {
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_RX_CTL(
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sunxi_ahub_cpudai->id),
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(1<<APBIF_RX_START),
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(1<<APBIF_RX_START));
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_RX_IRQ_CTL(
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sunxi_ahub_cpudai->id),
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(1<<APBIF_RX_DRQ),
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(1<<APBIF_RX_DRQ));
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}
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if (startup_capture_cnt++ > 0)
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sunxi_ahub_i2s_capture_route_enable(
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sunxi_ahub_cpudai);
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}
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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sunxi_ahub_i2s_playback_route_disable(
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sunxi_ahub_cpudai);
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_TX_IRQ_CTL(
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sunxi_ahub_cpudai->id),
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(1<<APBIF_TX_DRQ), (0<<APBIF_TX_DRQ));
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mdelay(2);
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sunxi_ahub_update_bits(
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SUNXI_AHUB_APBIF_TX_CTL(sunxi_ahub_cpudai->id),
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(1<<APBIF_TX_START), (0<<APBIF_TX_START));
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} else {
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sunxi_ahub_i2s_capture_route_disable(
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sunxi_ahub_cpudai);
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static struct snd_soc_dai_ops sunxi_ahub_cpudai_dai_ops = {
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.startup = sunxi_ahub_cpudai_startup,
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.trigger = sunxi_ahub_cpudai_trigger,
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};
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static struct snd_soc_dai_driver sunxi_ahub_cpudai_dai = {
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.playback = {
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.channels_min = 1,
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.channels_max = 16,
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.rates = SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE
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| SNDRV_PCM_FMTBIT_S32_LE,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 16,
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.rates = SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE
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| SNDRV_PCM_FMTBIT_S32_LE,
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},
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.ops = &sunxi_ahub_cpudai_dai_ops,
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};
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static const struct snd_soc_component_driver sunxi_ahub_cpudai_component = {
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.name = DRV_NAME,
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};
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static const struct of_device_id sunxi_ahub_cpudai_of_match[] = {
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{ .compatible = "allwinner,sunxi-ahub-cpudai", },
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{},
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};
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static int sunxi_ahub_cpudai_dev_probe(struct platform_device *pdev)
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{
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struct resource res;
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struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai;
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struct device_node *np = pdev->dev.of_node;
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unsigned int temp_val;
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int ret;
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sunxi_ahub_cpudai = devm_kzalloc(&pdev->dev,
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sizeof(struct sunxi_ahub_cpudai_priv), GFP_KERNEL);
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if (!sunxi_ahub_cpudai) {
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dev_err(&pdev->dev, "Can't allocate sunxi_cpudai\n");
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ret = -ENOMEM;
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goto err_node_put;
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}
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dev_set_drvdata(&pdev->dev, sunxi_ahub_cpudai);
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ret = of_property_read_u32(np, "id", &temp_val);
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if (ret < 0) {
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dev_err(&pdev->dev, "id configuration missing or invalid\n");
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goto err_devm_kfree;
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} else {
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sunxi_ahub_cpudai->id = temp_val;
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}
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ret = of_address_to_resource(np, 0, &res);
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if (ret) {
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dev_err(&pdev->dev, "Can't parse device node resource\n");
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ret = -ENODEV;
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goto err_devm_kfree;
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}
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switch (sunxi_ahub_cpudai->id) {
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case 0:
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sunxi_ahub_cpudai->playback_dma_param.dma_drq_type_num =
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DRQDST_AHUB0_TX;
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sunxi_ahub_cpudai->capture_dma_param.dma_drq_type_num =
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DRQSRC_AHUB0_RX;
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break;
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case 1:
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sunxi_ahub_cpudai->playback_dma_param.dma_drq_type_num =
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DRQDST_AHUB1_TX;
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sunxi_ahub_cpudai->capture_dma_param.dma_drq_type_num =
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DRQSRC_AHUB1_RX;
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break;
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case 2:
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sunxi_ahub_cpudai->playback_dma_param.dma_drq_type_num =
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DRQDST_AHUB2_TX;
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sunxi_ahub_cpudai->capture_dma_param.dma_drq_type_num =
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DRQSRC_AHUB2_RX;
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break;
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default:
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dev_err(&pdev->dev, "ahub cpudai id invalid\n");
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ret = -EINVAL;
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|
goto err_devm_kfree;
|
|
}
|
|
sunxi_ahub_cpudai->playback_dma_param.dma_addr =
|
|
res.start + SUNXI_AHUB_APBIF_TXFIFO(sunxi_ahub_cpudai->id);
|
|
sunxi_ahub_cpudai->playback_dma_param.dst_maxburst = 4;
|
|
sunxi_ahub_cpudai->playback_dma_param.src_maxburst = 4;
|
|
|
|
sunxi_ahub_cpudai->capture_dma_param.dma_addr =
|
|
res.start + SUNXI_AHUB_APBIF_RXFIFO(sunxi_ahub_cpudai->id);
|
|
sunxi_ahub_cpudai->capture_dma_param.src_maxburst = 4;
|
|
sunxi_ahub_cpudai->capture_dma_param.dst_maxburst = 4;
|
|
|
|
sunxi_ahub_cpudai->regmap = sunxi_ahub_regmap_init(pdev);
|
|
if (!sunxi_ahub_cpudai->regmap) {
|
|
dev_err(&pdev->dev, "regmap not init ok\n");
|
|
ret = -ENOMEM;
|
|
goto err_devm_kfree;
|
|
}
|
|
sunxi_ahub_cpudai_init();
|
|
|
|
ret = snd_soc_register_component(&pdev->dev,
|
|
&sunxi_ahub_cpudai_component,
|
|
&sunxi_ahub_cpudai_dai, 1);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
|
|
ret = -EBUSY;
|
|
goto err_devm_kfree;
|
|
}
|
|
|
|
ret = asoc_dma_platform_register(&pdev->dev,
|
|
SND_DMAENGINE_PCM_FLAG_NO_DT);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
|
|
goto err_unregister_component;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_unregister_component:
|
|
snd_soc_unregister_component(&pdev->dev);
|
|
err_devm_kfree:
|
|
devm_kfree(&pdev->dev, sunxi_ahub_cpudai);
|
|
err_node_put:
|
|
of_node_put(np);
|
|
return ret;
|
|
}
|
|
|
|
static int __exit sunxi_ahub_cpudai_dev_remove(struct platform_device *pdev)
|
|
{
|
|
struct sunxi_ahub_cpudai_priv *sunxi_ahub_cpudai =
|
|
dev_get_drvdata(&pdev->dev);
|
|
|
|
snd_soc_unregister_component(&pdev->dev);
|
|
devm_kfree(&pdev->dev, sunxi_ahub_cpudai);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver sunxi_ahub_cpudai_driver = {
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = sunxi_ahub_cpudai_of_match,
|
|
},
|
|
.probe = sunxi_ahub_cpudai_dev_probe,
|
|
.remove = __exit_p(sunxi_ahub_cpudai_dev_remove),
|
|
};
|
|
|
|
module_platform_driver(sunxi_ahub_cpudai_driver);
|
|
|
|
MODULE_AUTHOR("wolfgang huang <huangjinhui@allwinnertech.com>");
|
|
MODULE_DESCRIPTION("SUNXI Audio Hub cpudai ASoC Interface");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|