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linux-stable/sound/soc/hisilicon/hi6210-i2s.c
Takashi Sakamoto 2a54e845f6 ASoC: hisilicon: localize functions without external linkage 
A driver for hi6210 sound interface on hi6220 boards includes some
functions which has no external linkage. These functions should have
static qualifier.

This commit adds the qualifier to localize the functions. This issue is
detected by sparse:

hi6210-i2s.c💯5: warning: symbol 'hi6210_i2s_startup' was not declared. Should it be static?
hi6210-i2s.c:178:6: warning: symbol 'hi6210_i2s_shutdown' was not declared. Should it be static?
hi6210-i2s.c:527:27: warning: symbol 'hi6210_i2s_dai_init' was not declared. Should it be static?

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14 19:00:18 +09:00

619 lines
16 KiB
C
Raw Blame History

/*
* linux/sound/soc/m8m/hi6210_i2s.c - I2S IP driver
*
* Copyright (C) 2015 Linaro, Ltd
* Author: Andy Green <andy.green@linaro.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* This driver only deals with S2 interface (BT)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/jiffies.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <linux/interrupt.h>
#include <linux/reset.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/mfd/syscon.h>
#include <linux/reset-controller.h>
#include <linux/clk.h>
#include "hi6210-i2s.h"
struct hi6210_i2s {
struct device *dev;
struct reset_control *rc;
struct clk *clk[8];
int clocks;
struct snd_soc_dai_driver dai;
void __iomem *base;
struct regmap *sysctrl;
phys_addr_t base_phys;
struct snd_dmaengine_dai_dma_data dma_data[2];
int clk_rate;
spinlock_t lock;
int rate;
int format;
u8 bits;
u8 channels;
u8 id;
u8 channel_length;
u8 use;
u32 master:1;
u32 status:1;
};
#define SC_PERIPH_CLKEN1 0x210
#define SC_PERIPH_CLKDIS1 0x214
#define SC_PERIPH_CLKEN3 0x230
#define SC_PERIPH_CLKDIS3 0x234
#define SC_PERIPH_CLKEN12 0x270
#define SC_PERIPH_CLKDIS12 0x274
#define SC_PERIPH_RSTEN1 0x310
#define SC_PERIPH_RSTDIS1 0x314
#define SC_PERIPH_RSTSTAT1 0x318
#define SC_PERIPH_RSTEN2 0x320
#define SC_PERIPH_RSTDIS2 0x324
#define SC_PERIPH_RSTSTAT2 0x328
#define SOC_PMCTRL_BBPPLLALIAS 0x48
enum {
CLK_DACODEC,
CLK_I2S_BASE,
};
static inline void hi6210_write_reg(struct hi6210_i2s *i2s, int reg, u32 val)
{
writel(val, i2s->base + reg);
}
static inline u32 hi6210_read_reg(struct hi6210_i2s *i2s, int reg)
{
return readl(i2s->base + reg);
}
static int hi6210_i2s_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
int ret, n;
u32 val;
/* deassert reset on ABB */
regmap_read(i2s->sysctrl, SC_PERIPH_RSTSTAT2, &val);
if (val & BIT(4))
regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS2, BIT(4));
for (n = 0; n < i2s->clocks; n++) {
ret = clk_prepare_enable(i2s->clk[n]);
if (ret) {
while (n--)
clk_disable_unprepare(i2s->clk[n]);
return ret;
}
}
ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000);
if (ret) {
dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n",
__func__, ret);
return ret;
}
/* enable clock before frequency division */
regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN12, BIT(9));
/* enable codec working clock / == "codec bus clock" */
regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN1, BIT(5));
/* deassert reset on codec / interface clock / working clock */
regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS1, BIT(5));
/* not interested in i2s irqs */
val = hi6210_read_reg(i2s, HII2S_CODEC_IRQ_MASK);
val |= 0x3f;
hi6210_write_reg(i2s, HII2S_CODEC_IRQ_MASK, val);
/* reset the stereo downlink fifo */
val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
val |= (BIT(5) | BIT(4));
hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
val &= ~(BIT(5) | BIT(4));
hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
val &= ~(HII2S_SW_RST_N__ST_DL_WORDLEN_MASK <<
HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
val |= (HII2S_BITS_16 << HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
val = hi6210_read_reg(i2s, HII2S_MISC_CFG);
/* mux 11/12 = APB not i2s */
val &= ~HII2S_MISC_CFG__ST_DL_TEST_SEL;
/* BT R ch 0 = mixer op of DACR ch */
val &= ~HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
val &= ~HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
val |= HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
/* BT L ch = 1 = mux 7 = "mixer output of DACL */
val |= HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
hi6210_write_reg(i2s, HII2S_MISC_CFG, val);
val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
val |= HII2S_SW_RST_N__SW_RST_N;
hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
return 0;
}
static void hi6210_i2s_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
int n;
for (n = 0; n < i2s->clocks; n++)
clk_disable_unprepare(i2s->clk[n]);
regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
}
static void hi6210_i2s_txctrl(struct snd_soc_dai *cpu_dai, int on)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
u32 val;
spin_lock(&i2s->lock);
if (on) {
/* enable S2 TX */
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val |= HII2S_I2S_CFG__S2_IF_TX_EN;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
} else {
/* disable S2 TX */
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~HII2S_I2S_CFG__S2_IF_TX_EN;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
}
spin_unlock(&i2s->lock);
}
static void hi6210_i2s_rxctrl(struct snd_soc_dai *cpu_dai, int on)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
u32 val;
spin_lock(&i2s->lock);
if (on) {
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val |= HII2S_I2S_CFG__S2_IF_RX_EN;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
} else {
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~HII2S_I2S_CFG__S2_IF_RX_EN;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
}
spin_unlock(&i2s->lock);
}
static int hi6210_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
/*
* We don't actually set the hardware until the hw_params
* call, but we need to validate the user input here.
*/
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_RIGHT_J:
break;
default:
return -EINVAL;
}
i2s->format = fmt;
i2s->master = (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) ==
SND_SOC_DAIFMT_CBS_CFS;
return 0;
}
static int hi6210_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
u32 bits = 0, rate = 0, signed_data = 0, fmt = 0;
u32 val;
struct snd_dmaengine_dai_dma_data *dma_data;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_U16_LE:
signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
/* fallthru */
case SNDRV_PCM_FORMAT_S16_LE:
bits = HII2S_BITS_16;
break;
case SNDRV_PCM_FORMAT_U24_LE:
signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
/* fallthru */
case SNDRV_PCM_FORMAT_S24_LE:
bits = HII2S_BITS_24;
break;
default:
dev_err(cpu_dai->dev, "Bad format\n");
return -EINVAL;
}
switch (params_rate(params)) {
case 8000:
rate = HII2S_FS_RATE_8KHZ;
break;
case 16000:
rate = HII2S_FS_RATE_16KHZ;
break;
case 32000:
rate = HII2S_FS_RATE_32KHZ;
break;
case 48000:
rate = HII2S_FS_RATE_48KHZ;
break;
case 96000:
rate = HII2S_FS_RATE_96KHZ;
break;
case 192000:
rate = HII2S_FS_RATE_192KHZ;
break;
default:
dev_err(cpu_dai->dev, "Bad rate: %d\n", params_rate(params));
return -EINVAL;
}
if (!(params_channels(params))) {
dev_err(cpu_dai->dev, "Bad channels\n");
return -EINVAL;
}
dma_data = snd_soc_dai_get_dma_data(cpu_dai, substream);
switch (bits) {
case HII2S_BITS_24:
i2s->bits = 32;
dma_data->addr_width = 3;
break;
default:
i2s->bits = 16;
dma_data->addr_width = 2;
break;
}
i2s->rate = params_rate(params);
i2s->channels = params_channels(params);
i2s->channel_length = i2s->channels * i2s->bits;
val = hi6210_read_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG);
val &= ~((HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_MASK <<
HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_MASK <<
HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_MASK <<
HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
(HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_MASK <<
HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
val |= ((16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
(30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
(16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
(30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
hi6210_write_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG, val);
val = hi6210_read_reg(i2s, HII2S_IF_CLK_EN_CFG);
val |= (BIT(19) | BIT(18) | BIT(17) |
HII2S_IF_CLK_EN_CFG__S2_IF_CLK_EN |
HII2S_IF_CLK_EN_CFG__S2_OL_MIXER_EN |
HII2S_IF_CLK_EN_CFG__S2_OL_SRC_EN |
HII2S_IF_CLK_EN_CFG__ST_DL_R_EN |
HII2S_IF_CLK_EN_CFG__ST_DL_L_EN);
hi6210_write_reg(i2s, HII2S_IF_CLK_EN_CFG, val);
val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG);
val &= ~(HII2S_DIG_FILTER_CLK_EN_CFG__DACR_SDM_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACR_HBF2I_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACR_AGC_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACL_SDM_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACL_HBF2I_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACL_AGC_EN);
val |= (HII2S_DIG_FILTER_CLK_EN_CFG__DACR_MIXER_EN |
HII2S_DIG_FILTER_CLK_EN_CFG__DACL_MIXER_EN);
hi6210_write_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG, val);
val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG);
val &= ~(HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN2_MUTE |
HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN2_MUTE);
hi6210_write_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG, val);
val = hi6210_read_reg(i2s, HII2S_MUX_TOP_MODULE_CFG);
val &= ~(HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN1_MUTE |
HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN2_MUTE |
HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN1_MUTE |
HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN2_MUTE);
hi6210_write_reg(i2s, HII2S_MUX_TOP_MODULE_CFG, val);
switch (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
i2s->master = false;
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val |= HII2S_I2S_CFG__S2_MST_SLV;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
break;
case SND_SOC_DAIFMT_CBS_CFS:
i2s->master = true;
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~HII2S_I2S_CFG__S2_MST_SLV;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
break;
default:
WARN_ONCE(1, "Invalid i2s->fmt MASTER_MASK. This shouldn't happen\n");
return -EINVAL;
}
switch (i2s->format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
fmt = HII2S_FORMAT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
fmt = HII2S_FORMAT_LEFT_JUST;
break;
case SND_SOC_DAIFMT_RIGHT_J:
fmt = HII2S_FORMAT_RIGHT_JUST;
break;
default:
WARN_ONCE(1, "Invalid i2s->fmt FORMAT_MASK. This shouldn't happen\n");
return -EINVAL;
}
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~(HII2S_I2S_CFG__S2_FUNC_MODE_MASK <<
HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT);
val |= fmt << HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
val = hi6210_read_reg(i2s, HII2S_CLK_SEL);
val &= ~(HII2S_CLK_SEL__I2S_BT_FM_SEL | /* BT gets the I2S */
HII2S_CLK_SEL__EXT_12_288MHZ_SEL);
hi6210_write_reg(i2s, HII2S_CLK_SEL, val);
dma_data->maxburst = 2;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dma_data->addr = i2s->base_phys + HII2S_ST_DL_CHANNEL;
else
dma_data->addr = i2s->base_phys + HII2S_STEREO_UPLINK_CHANNEL;
switch (i2s->channels) {
case 1:
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val |= HII2S_I2S_CFG__S2_FRAME_MODE;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
break;
default:
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~HII2S_I2S_CFG__S2_FRAME_MODE;
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
break;
}
/* clear loopback, set signed type and word length */
val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
val &= ~HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
val &= ~(HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_MASK <<
HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
val &= ~(HII2S_I2S_CFG__S2_DIRECT_LOOP_MASK <<
HII2S_I2S_CFG__S2_DIRECT_LOOP_SHIFT);
val |= signed_data;
val |= (bits << HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
if (!i2s->master)
return 0;
/* set DAC and related units to correct rate */
val = hi6210_read_reg(i2s, HII2S_FS_CFG);
val &= ~(HII2S_FS_CFG__FS_S2_MASK << HII2S_FS_CFG__FS_S2_SHIFT);
val &= ~(HII2S_FS_CFG__FS_DACLR_MASK << HII2S_FS_CFG__FS_DACLR_SHIFT);
val &= ~(HII2S_FS_CFG__FS_ST_DL_R_MASK <<
HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
val &= ~(HII2S_FS_CFG__FS_ST_DL_L_MASK <<
HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
val |= (rate << HII2S_FS_CFG__FS_S2_SHIFT);
val |= (rate << HII2S_FS_CFG__FS_DACLR_SHIFT);
val |= (rate << HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
val |= (rate << HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
hi6210_write_reg(i2s, HII2S_FS_CFG, val);
return 0;
}
static int hi6210_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *cpu_dai)
{
pr_debug("%s\n", __func__);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
hi6210_i2s_rxctrl(cpu_dai, 1);
else
hi6210_i2s_txctrl(cpu_dai, 1);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
hi6210_i2s_rxctrl(cpu_dai, 0);
else
hi6210_i2s_txctrl(cpu_dai, 0);
break;
default:
dev_err(cpu_dai->dev, "uknown cmd\n");
return -EINVAL;
}
return 0;
}
static int hi6210_i2s_dai_probe(struct snd_soc_dai *dai)
{
struct hi6210_i2s *i2s = snd_soc_dai_get_drvdata(dai);
snd_soc_dai_init_dma_data(dai,
&i2s->dma_data[SNDRV_PCM_STREAM_PLAYBACK],
&i2s->dma_data[SNDRV_PCM_STREAM_CAPTURE]);
return 0;
}
static struct snd_soc_dai_ops hi6210_i2s_dai_ops = {
.trigger = hi6210_i2s_trigger,
.hw_params = hi6210_i2s_hw_params,
.set_fmt = hi6210_i2s_set_fmt,
.startup = hi6210_i2s_startup,
.shutdown = hi6210_i2s_shutdown,
};
static const struct snd_soc_dai_driver hi6210_i2s_dai_init = {
.probe = hi6210_i2s_dai_probe,
.playback = {
.channels_min = 2,
.channels_max = 2,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_U16_LE,
.rates = SNDRV_PCM_RATE_48000,
},
.capture = {
.channels_min = 2,
.channels_max = 2,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_U16_LE,
.rates = SNDRV_PCM_RATE_48000,
},
.ops = &hi6210_i2s_dai_ops,
};
static const struct snd_soc_component_driver hi6210_i2s_i2s_comp = {
.name = "hi6210_i2s-i2s",
};
static int hi6210_i2s_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct hi6210_i2s *i2s;
struct resource *res;
int ret;
i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
if (!i2s)
return -ENOMEM;
i2s->dev = dev;
spin_lock_init(&i2s->lock);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
i2s->base = devm_ioremap_resource(dev, res);
if (IS_ERR(i2s->base))
return PTR_ERR(i2s->base);
i2s->base_phys = (phys_addr_t)res->start;
i2s->dai = hi6210_i2s_dai_init;
dev_set_drvdata(&pdev->dev, i2s);
i2s->sysctrl = syscon_regmap_lookup_by_phandle(node,
"hisilicon,sysctrl-syscon");
if (IS_ERR(i2s->sysctrl))
return PTR_ERR(i2s->sysctrl);
i2s->clk[CLK_DACODEC] = devm_clk_get(&pdev->dev, "dacodec");
if (IS_ERR_OR_NULL(i2s->clk[CLK_DACODEC]))
return PTR_ERR(i2s->clk[CLK_DACODEC]);
i2s->clocks++;
i2s->clk[CLK_I2S_BASE] = devm_clk_get(&pdev->dev, "i2s-base");
if (IS_ERR_OR_NULL(i2s->clk[CLK_I2S_BASE]))
return PTR_ERR(i2s->clk[CLK_I2S_BASE]);
i2s->clocks++;
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (ret)
return ret;
ret = devm_snd_soc_register_component(&pdev->dev, &hi6210_i2s_i2s_comp,
&i2s->dai, 1);
return ret;
}
static const struct of_device_id hi6210_i2s_dt_ids[] = {
{ .compatible = "hisilicon,hi6210-i2s" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, hi6210_i2s_dt_ids);
static struct platform_driver hi6210_i2s_driver = {
.probe = hi6210_i2s_probe,
.driver = {
.name = "hi6210_i2s",
.of_match_table = hi6210_i2s_dt_ids,
},
};
module_platform_driver(hi6210_i2s_driver);
MODULE_DESCRIPTION("Hisilicon HI6210 I2S driver");
MODULE_AUTHOR("Andy Green <andy.green@linaro.org>");
MODULE_LICENSE("GPL");
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