ASoC: tegra: use regmap more directly
Stop open-coding the caching of the ctrl registers; instead, use
regmap_update_bits() to update parts of the register from different
places. The removal of the open-coded cache will allow controls to be
created which touch registers, which will be necessary if any of these
modules are converted to CODECs.
Get rid of tegra*_read/write; just call regmap_read/write directly.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 2327f62..b68e27a 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -44,18 +44,6 @@
#define DRV_NAME "tegra30-i2s"
-static inline void tegra30_i2s_write(struct tegra30_i2s *i2s, u32 reg, u32 val)
-{
- regmap_write(i2s->regmap, reg, val);
-}
-
-static inline u32 tegra30_i2s_read(struct tegra30_i2s *i2s, u32 reg)
-{
- u32 val;
- regmap_read(i2s->regmap, reg, &val);
- return val;
-}
-
static int tegra30_i2s_runtime_suspend(struct device *dev)
{
struct tegra30_i2s *i2s = dev_get_drvdata(dev);
@@ -128,6 +116,7 @@
unsigned int fmt)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+ unsigned int mask, val;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
@@ -136,10 +125,10 @@
return -EINVAL;
}
- i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_MASTER_ENABLE;
+ mask = TEGRA30_I2S_CTRL_MASTER_ENABLE;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_MASTER_ENABLE;
+ val = TEGRA30_I2S_CTRL_MASTER_ENABLE;
break;
case SND_SOC_DAIFMT_CBM_CFM:
break;
@@ -147,33 +136,37 @@
return -EINVAL;
}
- i2s->reg_ctrl &= ~(TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK |
- TEGRA30_I2S_CTRL_LRCK_MASK);
+ mask |= TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK |
+ TEGRA30_I2S_CTRL_LRCK_MASK;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
+ val |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
+ val |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_DSP_B:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_R_LOW;
+ val |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
+ val |= TEGRA30_I2S_CTRL_LRCK_R_LOW;
break;
case SND_SOC_DAIFMT_I2S:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
+ val |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
+ val |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_RIGHT_J:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
+ val |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
+ val |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_LEFT_J:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
+ val |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
+ val |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
default:
return -EINVAL;
}
+ pm_runtime_get_sync(dai->dev);
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL, mask, val);
+ pm_runtime_put(dai->dev);
+
return 0;
}
@@ -183,22 +176,24 @@
{
struct device *dev = dai->dev;
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
- u32 val;
+ unsigned int mask, val, reg;
int ret, sample_size, srate, i2sclock, bitcnt;
if (params_channels(params) != 2)
return -EINVAL;
- i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_BIT_SIZE_MASK;
+ mask = TEGRA30_I2S_CTRL_BIT_SIZE_MASK;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_BIT_SIZE_16;
+ val = TEGRA30_I2S_CTRL_BIT_SIZE_16;
sample_size = 16;
break;
default:
return -EINVAL;
}
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL, mask, val);
+
srate = params_rate(params);
/* Final "* 2" required by Tegra hardware */
@@ -219,7 +214,7 @@
if (i2sclock % (2 * srate))
val |= TEGRA30_I2S_TIMING_NON_SYM_ENABLE;
- tegra30_i2s_write(i2s, TEGRA30_I2S_TIMING, val);
+ regmap_write(i2s->regmap, TEGRA30_I2S_TIMING, val);
val = (0 << TEGRA30_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT) |
(1 << TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT) |
@@ -229,15 +224,17 @@
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
val |= TEGRA30_AUDIOCIF_CTRL_DIRECTION_RX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CIF_RX_CTRL, val);
+ reg = TEGRA30_I2S_CIF_RX_CTRL;
} else {
val |= TEGRA30_AUDIOCIF_CTRL_DIRECTION_TX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CIF_TX_CTRL, val);
+ reg = TEGRA30_I2S_CIF_RX_CTRL;
}
+ regmap_write(i2s->regmap, reg, val);
+
val = (1 << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT) |
(1 << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT);
- tegra30_i2s_write(i2s, TEGRA30_I2S_OFFSET, val);
+ regmap_write(i2s->regmap, TEGRA30_I2S_OFFSET, val);
return 0;
}
@@ -245,29 +242,31 @@
static void tegra30_i2s_start_playback(struct tegra30_i2s *i2s)
{
tegra30_ahub_enable_tx_fifo(i2s->playback_fifo_cif);
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_XFER_EN_TX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL,
+ TEGRA30_I2S_CTRL_XFER_EN_TX,
+ TEGRA30_I2S_CTRL_XFER_EN_TX);
}
static void tegra30_i2s_stop_playback(struct tegra30_i2s *i2s)
{
tegra30_ahub_disable_tx_fifo(i2s->playback_fifo_cif);
- i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_TX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL,
+ TEGRA30_I2S_CTRL_XFER_EN_TX, 0);
}
static void tegra30_i2s_start_capture(struct tegra30_i2s *i2s)
{
tegra30_ahub_enable_rx_fifo(i2s->capture_fifo_cif);
- i2s->reg_ctrl |= TEGRA30_I2S_CTRL_XFER_EN_RX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL,
+ TEGRA30_I2S_CTRL_XFER_EN_RX,
+ TEGRA30_I2S_CTRL_XFER_EN_RX);
}
static void tegra30_i2s_stop_capture(struct tegra30_i2s *i2s)
{
tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif);
- i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_RX;
- tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
+ regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL,
+ TEGRA30_I2S_CTRL_XFER_EN_RX, 0);
}
static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd,