// SPDX-License-Identifier: GPL-2.0
//
// Freescale ASRC ALSA SoC Digital Audio Interface (DAI) driver
//
// Copyright (C) 2014 Freescale Semiconductor, Inc.
//
// Author: Nicolin Chen <nicoleotsuka@gmail.com>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_data/dma-imx.h>
#include <linux/pm_runtime.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
#include "fsl_asrc.h"
#define IDEAL_RATIO_DECIMAL_DEPTH 26
#define pair_err(fmt, ...) \
dev_err(&asrc->pdev->dev, "Pair %c: " fmt, 'A' + index, ##__VA_ARGS__)
#define pair_dbg(fmt, ...) \
dev_dbg(&asrc->pdev->dev, "Pair %c: " fmt, 'A' + index, ##__VA_ARGS__)
/* Corresponding to process_option */
static unsigned int supported_asrc_rate[] = {
5512, 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
64000, 88200, 96000, 128000, 176400, 192000,
};
static struct snd_pcm_hw_constraint_list fsl_asrc_rate_constraints = {
.count = ARRAY_SIZE(supported_asrc_rate),
.list = supported_asrc_rate,
};
/**
* The following tables map the relationship between asrc_inclk/asrc_outclk in
* fsl_asrc.h and the registers of ASRCSR
*/
static unsigned char input_clk_map_imx35[ASRC_CLK_MAP_LEN] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
};
static unsigned char output_clk_map_imx35[ASRC_CLK_MAP_LEN] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
};
/* i.MX53 uses the same map for input and output */
static unsigned char input_clk_map_imx53[ASRC_CLK_MAP_LEN] = {
/* 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xa 0xb 0xc 0xd 0xe 0xf */
0x0, 0x1, 0x2, 0x7, 0x4, 0x5, 0x6, 0x3, 0x8, 0x9, 0xa