// SPDX-License-Identifier: GPL-2.0
//
// soc-dai.c
//
// Copyright (C) 2019 Renesas Electronics Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//
#include <sound/soc.h>
#include <sound/soc-dai.h>
/**
* snd_soc_dai_set_sysclk - configure DAI system or master clock.
* @dai: DAI
* @clk_id: DAI specific clock ID
* @freq: new clock frequency in Hz
* @dir: new clock direction - input/output.
*
* Configures the DAI master (MCLK) or system (SYSCLK) clocking.
*/
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
if (dai->driver->ops->set_sysclk)
return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
freq, dir);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
/**
* snd_soc_dai_set_clkdiv - configure DAI clock dividers.
* @dai: DAI
* @div_id: DAI specific clock divider ID
* @div: new clock divisor.
*
* Configures the clock dividers. This is used to derive the best DAI bit and
* frame clocks from the system or master clock. It's best to set the DAI bit
* and frame clocks as low as possible to save system power.
*/
int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
int div_id, int div)
{
if (dai->driver->ops->set_clkdiv)
return dai->driver->ops->set_clkdiv(dai, div_id, div);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
/**
* snd_soc_dai_set_pll - configure DAI PLL.
* @dai: DAI
* @pll_id: DAI specific PLL ID
* @source: DAI specific source for the PLL
* @freq_in: PLL input clock frequency in Hz
* @freq_out: requested PLL output clock frequency in Hz
*
* Configures and enables PLL to generate output clock based on input clock.
*/
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out)
{
if (dai->driver->ops->set_pll)
return dai->driver->ops->set_pll(dai, pll_id, source,
freq_in, freq_out);
return snd_soc_component_set_pll(dai->component, pll_id, source,
freq_in, freq_out);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
/**
* snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
* @dai: DAI
* @ratio: Ratio of BCLK to Sample rate.
*
* Configures the DAI for a preset BCLK to sample rate ratio.
*/
int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
{
if (dai->driver->ops->set_bclk_ratio)
return dai->driver->ops->set_bclk_ratio(dai, ratio);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
/**
* snd_soc_dai_set_fmt - configure DAI hardware audio format.
* @dai: DAI
* @fmt: SND_SOC_DAIFMT_* format value.
*
* Configures the DAI hardware format and clocking.
*/
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
if (dai->driver->ops->set_fmt == NULL)
return -ENOTSUPP;
return dai->driver->ops->set_fmt(dai, fmt);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
/**
* snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
* @slots: Number of slots in use.
* @tx_mask: bitmask representing active TX slots.
* @rx_mask: bitmask representing active RX slots.
*
* Generates the TDM tx and rx slot default masks for DAI.
*/
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
unsigned int *tx_mask,
unsigned int *rx_mask)
{
if (*tx_mask || *rx_mask)
return 0;
if (!slots)
return -EINVAL;
*tx_mask = (1 << slots) - 1;
*rx_mask = (1 << slots) - 1;
return 0;
}
/**
* snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
* @dai: The DAI to configure
* @tx_mask: bitmask representing active TX slots.
* @rx_mask: bitmask representing active RX slots.
* @slots: Number of slots in use.
* @slot_width: Width in bits for each slot.
*
* This function configures the specified DAI for TDM operation. @slot contains
* the total number of slots of the TDM stream and @slot_with the width of each
* slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
* active slots of the TDM stream for the specified DAI, i.e. which slots the
* DAI should write to or read from. If a bit is set the corresponding slot is
* active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
* the first slot, bit 1 to the second slot and so on. The first active slot
* maps to the first channel of the DAI, the second active slot to the second
* channel and so on.
*
* TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
* @rx_mask and @slot_width will be ignored.
*
* Returns 0 on success, a negative error code otherwise.
*/
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width)
{
if (dai->driver->ops->xlate_tdm_slot_mask)
dai->driver->ops->xlate_tdm_slot_mask(slots,
&tx_mask, &rx_mask);
else
snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
dai->tx_mask = tx_mask;
dai->rx_mask = rx_mask;
if (dai->driver->ops->set_tdm_slot)
return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
slots, slot_width);
else
return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
/**
* snd_soc_dai_set_channel_map - configure DAI audio channel map
* @dai: DAI
* @tx_num: how many TX channels
* @tx_slot: pointer to an array which imply the TX slot number channel
* 0~num-1 uses
* @rx_num: how many RX channels
* @rx_slot: pointer to an array which imply the RX slot number channel
* 0~num-1 uses
*
* configure the relationship between channel number and TDM slot number.
*/
int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot)
{
if (dai->driver->ops->set_channel_map)
return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
rx_num, rx_slot);
else
return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
/**
* snd_soc_dai_get_channel_map - Get DAI audio channel map
* @dai: DAI
* @tx_num: how many TX channels
* @tx_slot: pointer to an array which imply the TX slot number channel
* 0~num-1 uses
* @rx_num: how many RX channels
* @rx_slot: pointer to an array which imply the RX slot number channel
* 0~num-1 uses
*/
int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
unsigned int *tx_num, unsigned int *tx_slot,
unsigned int *rx_num, unsigned int *rx_slot)
{
if (dai->driver->ops->get_channel_map)
return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
rx_num, rx_slot);
else
return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
/**
* snd_soc_dai_set_tristate - configure DAI system or master clock.
* @dai: DAI
* @tristate: tristate enable
*
* Tristates the DAI so that others can use it.
*/
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
{
if (dai->driver->ops->set_tristate)
return dai->driver->ops->set_tristate(dai, tristate);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
/**
* snd_soc_dai_digital_mute - configure DAI system or master clock.
* @dai: DAI
* @mute: mute enable
* @direction: stream to mute
*
* Mutes the DAI DAC.
*/
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
int direction)
{
if (dai->driver->ops->mute_stream)
return dai->driver->ops->mute_stream(dai, mute, direction);
else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
dai->driver->ops->digital_mute)
return dai->driver->ops->digital_mute(dai, mute);
else
return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
int snd_soc_dai_hw_params(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
int ret;
/* perform any topology hw_params fixups before DAI */
if (rtd->dai_link->be_hw_params_fixup) {
ret = rtd->dai_link->be_hw_params_fixup(rtd, params);
if (ret < 0) {
dev_err(rtd->dev,
"ASoC: hw_params topology fixup failed %d\n",
ret);
return ret;
}
}
if (dai->driver->ops->hw_params) {
ret = dai->driver->ops->hw_params(substream, params, dai);
if (ret < 0) {
dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n",
dai->name, ret);
return ret;
}
}
return 0;
}
void snd_soc_dai_hw_free(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream)
{
if (dai->driver->ops->hw_free)
dai->driver->ops->hw_free(substream, dai);
}
