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linux-sg2042/sound/soc/ux500/ux500_msp_dai.c

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/*
* Copyright (C) ST-Ericsson SA 2012
*
* Author: Ola Lilja <ola.o.lilja@stericsson.com>,
* Roger Nilsson <roger.xr.nilsson@stericsson.com>
* for ST-Ericsson.
*
* License terms:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <mach/hardware.h>
#include <mach/msp.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include "ux500_msp_i2s.h"
#include "ux500_msp_dai.h"
#include "ux500_pcm.h"
static int setup_pcm_multichan(struct snd_soc_dai *dai,
struct ux500_msp_config *msp_config)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
struct msp_multichannel_config *multi =
&msp_config->multichannel_config;
if (drvdata->slots > 1) {
msp_config->multichannel_configured = 1;
multi->tx_multichannel_enable = true;
multi->rx_multichannel_enable = true;
multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
multi->tx_channel_0_enable = drvdata->tx_mask;
multi->tx_channel_1_enable = 0;
multi->tx_channel_2_enable = 0;
multi->tx_channel_3_enable = 0;
multi->rx_channel_0_enable = drvdata->rx_mask;
multi->rx_channel_1_enable = 0;
multi->rx_channel_2_enable = 0;
multi->rx_channel_3_enable = 0;
dev_dbg(dai->dev,
"%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
__func__, drvdata->slots, multi->tx_channel_0_enable,
multi->rx_channel_0_enable);
}
return 0;
}
static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
struct msp_protdesc *prot_desc)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
switch (drvdata->slots) {
case 1:
switch (rate) {
case 8000:
prot_desc->frame_period =
FRAME_PER_SINGLE_SLOT_8_KHZ;
break;
case 16000:
prot_desc->frame_period =
FRAME_PER_SINGLE_SLOT_16_KHZ;
break;
case 44100:
prot_desc->frame_period =
FRAME_PER_SINGLE_SLOT_44_1_KHZ;
break;
case 48000:
prot_desc->frame_period =
FRAME_PER_SINGLE_SLOT_48_KHZ;
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported sample-rate (freq = %d)!\n",
__func__, rate);
return -EINVAL;
}
break;
case 2:
prot_desc->frame_period = FRAME_PER_2_SLOTS;
break;
case 8:
prot_desc->frame_period = FRAME_PER_8_SLOTS;
break;
case 16:
prot_desc->frame_period = FRAME_PER_16_SLOTS;
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported slot-count (slots = %d)!\n",
__func__, drvdata->slots);
return -EINVAL;
}
prot_desc->clocks_per_frame =
prot_desc->frame_period+1;
dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
__func__,
prot_desc->clocks_per_frame);
return 0;
}
static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
struct msp_protdesc *prot_desc)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
u32 frame_length = MSP_FRAME_LEN_1;
prot_desc->frame_width = 0;
switch (drvdata->slots) {
case 1:
frame_length = MSP_FRAME_LEN_1;
break;
case 2:
frame_length = MSP_FRAME_LEN_2;
break;
case 8:
frame_length = MSP_FRAME_LEN_8;
break;
case 16:
frame_length = MSP_FRAME_LEN_16;
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported slot-count (slots = %d)!\n",
__func__, drvdata->slots);
return -EINVAL;
}
prot_desc->tx_frame_len_1 = frame_length;
prot_desc->rx_frame_len_1 = frame_length;
prot_desc->tx_frame_len_2 = frame_length;
prot_desc->rx_frame_len_2 = frame_length;
prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
return setup_frameper(dai, rate, prot_desc);
}
static int setup_clocking(struct snd_soc_dai *dai,
unsigned int fmt,
struct ux500_msp_config *msp_config)
{
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_NB_IF:
msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT;
msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT;
break;
default:
dev_err(dai->dev,
"%s: Error: Unsopported inversion (fmt = 0x%x)!\n",
__func__, fmt);
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
dev_dbg(dai->dev, "%s: Codec is master.\n", __func__);
msp_config->iodelay = 0x20;
msp_config->rx_fsync_sel = 0;
msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT;
msp_config->tx_clk_sel = 0;
msp_config->rx_clk_sel = 0;
msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT;
break;
case SND_SOC_DAIFMT_CBS_CFS:
dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__);
msp_config->tx_clk_sel = TX_CLK_SEL_SRG;
msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG;
msp_config->rx_clk_sel = RX_CLK_SEL_SRG;
msp_config->rx_fsync_sel = RX_SYNC_SRG;
msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT;
break;
default:
dev_err(dai->dev, "%s: Error: Unsopported master (fmt = 0x%x)!\n",
__func__, fmt);
return -EINVAL;
}
return 0;
}
static int setup_pcm_protdesc(struct snd_soc_dai *dai,
unsigned int fmt,
struct msp_protdesc *prot_desc)
{
prot_desc->rx_phase_mode = MSP_SINGLE_PHASE;
prot_desc->tx_phase_mode = MSP_SINGLE_PHASE;
prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI);
prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT;
if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) {
dev_dbg(dai->dev, "%s: DSP_A.\n", __func__);
prot_desc->rx_clk_pol = MSP_RISING_EDGE;
prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
prot_desc->rx_data_delay = MSP_DELAY_1;
prot_desc->tx_data_delay = MSP_DELAY_1;
} else {
dev_dbg(dai->dev, "%s: DSP_B.\n", __func__);
prot_desc->rx_clk_pol = MSP_FALLING_EDGE;
prot_desc->tx_clk_pol = MSP_RISING_EDGE;
prot_desc->rx_data_delay = MSP_DELAY_0;
prot_desc->tx_data_delay = MSP_DELAY_0;
}
prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
return 0;
}
static int setup_i2s_protdesc(struct msp_protdesc *prot_desc)
{
prot_desc->rx_phase_mode = MSP_DUAL_PHASE;
prot_desc->tx_phase_mode = MSP_DUAL_PHASE;
prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO);
prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT;
prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1;
prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1;
prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1;
prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1;
prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
prot_desc->rx_clk_pol = MSP_RISING_EDGE;
prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
prot_desc->rx_data_delay = MSP_DELAY_0;
prot_desc->tx_data_delay = MSP_DELAY_0;
prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
return 0;
}
static int setup_msp_config(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai,
struct ux500_msp_config *msp_config)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
struct msp_protdesc *prot_desc = &msp_config->protdesc;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int fmt = drvdata->fmt;
int ret;
memset(msp_config, 0, sizeof(*msp_config));
msp_config->f_inputclk = drvdata->master_clk;
msp_config->tx_fifo_config = TX_FIFO_ENABLE;
msp_config->rx_fifo_config = RX_FIFO_ENABLE;
msp_config->def_elem_len = 1;
msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
MSP_DIR_TX : MSP_DIR_RX;
msp_config->data_size = MSP_DATA_BITS_32;
msp_config->frame_freq = runtime->rate;
dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n",
__func__, msp_config->f_inputclk, msp_config->frame_freq);
/* To avoid division by zero */
prot_desc->clocks_per_frame = 1;
dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__,
runtime->rate, runtime->channels);
switch (fmt &
(SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) {
case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
msp_config->default_protdesc = 1;
msp_config->protocol = MSP_I2S_PROTOCOL;
break;
case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
msp_config->data_size = MSP_DATA_BITS_16;
msp_config->protocol = MSP_I2S_PROTOCOL;
ret = setup_i2s_protdesc(prot_desc);
if (ret < 0)
return ret;
break;
case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
dev_dbg(dai->dev, "%s: PCM format.\n", __func__);
msp_config->data_size = MSP_DATA_BITS_16;
msp_config->protocol = MSP_PCM_PROTOCOL;
ret = setup_pcm_protdesc(dai, fmt, prot_desc);
if (ret < 0)
return ret;
ret = setup_pcm_multichan(dai, msp_config);
if (ret < 0)
return ret;
ret = setup_pcm_framing(dai, runtime->rate, prot_desc);
if (ret < 0)
return ret;
break;
default:
dev_err(dai->dev, "%s: Error: Unsopported format (%d)!\n",
__func__, fmt);
return -EINVAL;
}
return setup_clocking(dai, fmt, msp_config);
}
static int ux500_msp_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret = 0;
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
snd_pcm_stream_str(substream));
/* Enable regulator */
ret = regulator_enable(drvdata->reg_vape);
if (ret != 0) {
dev_err(drvdata->msp->dev,
"%s: Failed to enable regulator!\n", __func__);
return ret;
}
/* Prepare and enable clocks */
dev_dbg(dai->dev, "%s: Enabling MSP-clocks.\n", __func__);
ret = clk_prepare_enable(drvdata->pclk);
if (ret) {
dev_err(drvdata->msp->dev,
"%s: Failed to prepare/enable pclk!\n", __func__);
goto err_pclk;
}
ret = clk_prepare_enable(drvdata->clk);
if (ret) {
dev_err(drvdata->msp->dev,
"%s: Failed to prepare/enable clk!\n", __func__);
goto err_clk;
}
return ret;
err_clk:
clk_disable_unprepare(drvdata->pclk);
err_pclk:
regulator_disable(drvdata->reg_vape);
return ret;
}
static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret;
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
snd_pcm_stream_str(substream));
if (drvdata->vape_opp_constraint == 1) {
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
"ux500_msp_i2s", 50);
drvdata->vape_opp_constraint = 0;
}
if (ux500_msp_i2s_close(drvdata->msp,
is_playback ? MSP_DIR_TX : MSP_DIR_RX)) {
dev_err(dai->dev,
"%s: Error: MSP %d (%s): Unable to close i2s.\n",
__func__, dai->id, snd_pcm_stream_str(substream));
}
/* Disable and unprepare clocks */
clk_disable_unprepare(drvdata->clk);
clk_disable_unprepare(drvdata->pclk);
/* Disable regulator */
ret = regulator_disable(drvdata->reg_vape);
if (ret < 0)
dev_err(dai->dev,
"%s: ERROR: Failed to disable regulator (%d)!\n",
__func__, ret);
}
static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret = 0;
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
struct snd_pcm_runtime *runtime = substream->runtime;
struct ux500_msp_config msp_config;
dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__,
dai->id, snd_pcm_stream_str(substream), runtime->rate);
setup_msp_config(substream, dai, &msp_config);
ret = ux500_msp_i2s_open(drvdata->msp, &msp_config);
if (ret < 0) {
dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n",
__func__, ret);
return ret;
}
/* Set OPP-level */
if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) &&
(drvdata->msp->f_bitclk > 19200000)) {
/* If the bit-clock is higher than 19.2MHz, Vape should be
* run in 100% OPP. Only when bit-clock is used (MSP master) */
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
"ux500-msp-i2s", 100);
drvdata->vape_opp_constraint = 1;
} else {
prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
"ux500-msp-i2s", 50);
drvdata->vape_opp_constraint = 0;
}
return ret;
}
static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
unsigned int mask, slots_active;
struct snd_pcm_runtime *runtime = substream->runtime;
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
__func__, dai->id, snd_pcm_stream_str(substream));
switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_CHANNELS,
1, 2);
break;
case SND_SOC_DAIFMT_DSP_B:
case SND_SOC_DAIFMT_DSP_A:
mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
drvdata->tx_mask :
drvdata->rx_mask;
slots_active = hweight32(mask);
dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_CHANNELS,
slots_active, slots_active);
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
__func__, drvdata->fmt);
return -EINVAL;
}
return 0;
}
static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
SND_SOC_DAIFMT_MASTER_MASK)) {
case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
__func__, drvdata->fmt);
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
case SND_SOC_DAIFMT_NB_IF:
case SND_SOC_DAIFMT_IB_IF:
break;
default:
dev_err(dai->dev,
"%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
__func__, drvdata->fmt);
return -EINVAL;
}
drvdata->fmt = fmt;
return 0;
}
static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask,
unsigned int rx_mask,
int slots, int slot_width)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
unsigned int cap;
switch (slots) {
case 1:
cap = 0x01;
break;
case 2:
cap = 0x03;
break;
case 8:
cap = 0xFF;
break;
case 16:
cap = 0xFFFF;
break;
default:
dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
__func__, slots);
return -EINVAL;
}
drvdata->slots = slots;
if (!(slot_width == 16)) {
dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
__func__, slot_width);
return -EINVAL;
}
drvdata->slot_width = slot_width;
drvdata->tx_mask = tx_mask & cap;
drvdata->rx_mask = rx_mask & cap;
return 0;
}
static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
__func__, dai->id, clk_id, freq);
switch (clk_id) {
case UX500_MSP_MASTER_CLOCK:
drvdata->master_clk = freq;
break;
default:
dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
__func__, dai->id, clk_id);
return -EINVAL;
}
return 0;
}
static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
int ret = 0;
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
__func__, dai->id, snd_pcm_stream_str(substream),
(int)drvdata->msp->id, cmd);
ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
return ret;
}
static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
drvdata->playback_dma_data.dma_cfg = drvdata->msp->dma_cfg_tx;
drvdata->capture_dma_data.dma_cfg = drvdata->msp->dma_cfg_rx;
dai->playback_dma_data = &drvdata->playback_dma_data;
dai->capture_dma_data = &drvdata->capture_dma_data;
drvdata->playback_dma_data.data_size = drvdata->slot_width;
drvdata->capture_dma_data.data_size = drvdata->slot_width;
return 0;
}
static struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
{
.set_sysclk = ux500_msp_dai_set_dai_sysclk,
.set_fmt = ux500_msp_dai_set_dai_fmt,
.set_tdm_slot = ux500_msp_dai_set_tdm_slot,
.startup = ux500_msp_dai_startup,
.shutdown = ux500_msp_dai_shutdown,
.prepare = ux500_msp_dai_prepare,
.trigger = ux500_msp_dai_trigger,
.hw_params = ux500_msp_dai_hw_params,
}
};
static struct snd_soc_dai_driver ux500_msp_dai_drv[UX500_NBR_OF_DAI] = {
{
.name = "ux500-msp-i2s.0",
.probe = ux500_msp_dai_probe,
.id = 0,
.suspend = NULL,
.resume = NULL,
.playback = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.capture = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.ops = ux500_msp_dai_ops,
},
{
.name = "ux500-msp-i2s.1",
.probe = ux500_msp_dai_probe,
.id = 1,
.suspend = NULL,
.resume = NULL,
.playback = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.capture = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.ops = ux500_msp_dai_ops,
},
{
.name = "ux500-msp-i2s.2",
.id = 2,
.probe = ux500_msp_dai_probe,
.suspend = NULL,
.resume = NULL,
.playback = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.capture = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.ops = ux500_msp_dai_ops,
},
{
.name = "ux500-msp-i2s.3",
.probe = ux500_msp_dai_probe,
.id = 3,
.suspend = NULL,
.resume = NULL,
.playback = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.capture = {
.channels_min = UX500_MSP_MIN_CHANNELS,
.channels_max = UX500_MSP_MAX_CHANNELS,
.rates = UX500_I2S_RATES,
.formats = UX500_I2S_FORMATS,
},
.ops = ux500_msp_dai_ops,
},
};
static int ux500_msp_drv_probe(struct platform_device *pdev)
{
struct ux500_msp_i2s_drvdata *drvdata;
int ret = 0;
dev_dbg(&pdev->dev, "%s: Enter (pdev->name = %s).\n", __func__,
pdev->name);
drvdata = devm_kzalloc(&pdev->dev,
sizeof(struct ux500_msp_i2s_drvdata),
GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
drvdata->fmt = 0;
drvdata->slots = 1;
drvdata->tx_mask = 0x01;
drvdata->rx_mask = 0x01;
drvdata->slot_width = 16;
drvdata->master_clk = MSP_INPUT_FREQ_APB;
drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
if (IS_ERR(drvdata->reg_vape)) {
ret = (int)PTR_ERR(drvdata->reg_vape);
dev_err(&pdev->dev,
"%s: ERROR: Failed to get Vape supply (%d)!\n",
__func__, ret);
return ret;
}
prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
drvdata->pclk = clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(drvdata->pclk)) {
ret = (int)PTR_ERR(drvdata->pclk);
dev_err(&pdev->dev, "%s: ERROR: clk_get of pclk failed (%d)!\n",
__func__, ret);
goto err_pclk;
}
drvdata->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(drvdata->clk)) {
ret = (int)PTR_ERR(drvdata->clk);
dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n",
__func__, ret);
goto err_clk;
}
ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
pdev->dev.platform_data);
if (!drvdata->msp) {
dev_err(&pdev->dev,
"%s: ERROR: Failed to init MSP-struct (%d)!",
__func__, ret);
goto err_init_msp;
}
dev_set_drvdata(&pdev->dev, drvdata);
ret = snd_soc_register_dai(&pdev->dev,
&ux500_msp_dai_drv[drvdata->msp->id]);
if (ret < 0) {
dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
__func__, drvdata->msp->id);
goto err_init_msp;
}
ret = ux500_pcm_register_platform(pdev);
if (ret < 0) {
dev_err(&pdev->dev,
"Error: %s: Failed to register PCM platform device!\n",
__func__);
goto err_reg_plat;
}
return 0;
err_reg_plat:
snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(ux500_msp_dai_drv));
err_init_msp:
clk_put(drvdata->clk);
err_clk:
clk_put(drvdata->pclk);
err_pclk:
devm_regulator_put(drvdata->reg_vape);
return ret;
}
static int ux500_msp_drv_remove(struct platform_device *pdev)
{
struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
ux500_pcm_unregister_platform(pdev);
snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(ux500_msp_dai_drv));
devm_regulator_put(drvdata->reg_vape);
prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
clk_put(drvdata->clk);
clk_put(drvdata->pclk);
ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
return 0;
}
static const struct of_device_id ux500_msp_i2s_match[] = {
{ .compatible = "stericsson,ux500-msp-i2s", },
{},
};
static struct platform_driver msp_i2s_driver = {
.driver = {
.name = "ux500-msp-i2s",
.owner = THIS_MODULE,
.of_match_table = ux500_msp_i2s_match,
},
.probe = ux500_msp_drv_probe,
.remove = ux500_msp_drv_remove,
};
module_platform_driver(msp_i2s_driver);
MODULE_LICENSE("GPL v2");
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