From: Ben Dooks <ben.dooks@codethink.co.uk>
To: linux-tegra@vger.kernel.org, alsa-devel@alsa-project.org,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-kernel@lists.codethink.co.uk,
Ben Dooks <ben.dooks@codethink.co.uk>
Subject: [alsa-devel] [PATCH v4 6/7] ASoC: tegra: config fifos on hw_param changes
Date: Mon, 7 Oct 2019 16:31:35 +0100 [thread overview]
Message-ID: <20191007153136.4920-7-ben.dooks@codethink.co.uk> (raw)
In-Reply-To: <20191007153136.4920-1-ben.dooks@codethink.co.uk>
If the hw_params uses a different bit or channel count, then we
need to change both the I2S unit's CIF configuration as well as
the APBIF one.
To allow changing the APBIF, add a call to reconfigure the RX or
TX FIFO without changing the DMA or allocation, and get the I2S
driver to call it once the hw params have been calculate.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
sound/soc/tegra/tegra30_ahub.c | 115 ++++++++++++++++++---------------
sound/soc/tegra/tegra30_ahub.h | 5 ++
sound/soc/tegra/tegra30_i2s.c | 2 +
3 files changed, 69 insertions(+), 53 deletions(-)
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index 952381260dc3..24bc03428b45 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -84,12 +84,40 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
return 0;
}
+int tegra30_ahub_setup_rx_fifo(enum tegra30_ahub_rxcif rxcif,
+ struct tegra30_ahub_cif_conf *cif_conf)
+{
+ int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
+ u32 reg, val;
+
+ pm_runtime_get_sync(ahub->dev);
+
+ reg = TEGRA30_AHUB_CHANNEL_CTRL +
+ (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
+ val = tegra30_apbif_read(reg);
+ val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK |
+ TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_MASK);
+ val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT) |
+ TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_EN |
+ TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_16;
+ tegra30_apbif_write(reg, val);
+
+ cif_conf->direction = TEGRA30_AUDIOCIF_DIRECTION_RX;
+
+ reg = TEGRA30_AHUB_CIF_RX_CTRL +
+ (channel * TEGRA30_AHUB_CIF_RX_CTRL_STRIDE);
+ ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, cif_conf);
+
+ pm_runtime_put(ahub->dev);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra30_ahub_setup_rx_fifo);
+
int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
char *dmachan, int dmachan_len,
dma_addr_t *fiforeg)
{
int channel;
- u32 reg, val;
struct tegra30_ahub_cif_conf cif_conf;
channel = find_first_zero_bit(ahub->rx_usage,
@@ -104,37 +132,14 @@ int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_RXFIFO +
(channel * TEGRA30_AHUB_CHANNEL_RXFIFO_STRIDE);
- pm_runtime_get_sync(ahub->dev);
+ memset(&cif_conf, 0, sizeof(cif_conf));
- reg = TEGRA30_AHUB_CHANNEL_CTRL +
- (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
- val = tegra30_apbif_read(reg);
- val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK |
- TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_MASK);
- val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT) |
- TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_EN |
- TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_16;
- tegra30_apbif_write(reg, val);
-
- cif_conf.threshold = 0;
cif_conf.audio_channels = 2;
cif_conf.client_channels = 2;
cif_conf.audio_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.client_bits = TEGRA30_AUDIOCIF_BITS_16;
- cif_conf.expand = 0;
- cif_conf.stereo_conv = 0;
- cif_conf.replicate = 0;
- cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_RX;
- cif_conf.truncate = 0;
- cif_conf.mono_conv = 0;
-
- reg = TEGRA30_AHUB_CIF_RX_CTRL +
- (channel * TEGRA30_AHUB_CIF_RX_CTRL_STRIDE);
- ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
-
- pm_runtime_put(ahub->dev);
- return 0;
+ return tegra30_ahub_setup_rx_fifo(*rxcif, &cif_conf);
}
EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_rx_fifo);
@@ -186,12 +191,40 @@ int tegra30_ahub_free_rx_fifo(enum tegra30_ahub_rxcif rxcif)
}
EXPORT_SYMBOL_GPL(tegra30_ahub_free_rx_fifo);
+int tegra30_ahub_setup_tx_fifo(enum tegra30_ahub_txcif txcif,
+ struct tegra30_ahub_cif_conf *cif_conf)
+{
+ int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
+ u32 reg, val;
+
+ pm_runtime_get_sync(ahub->dev);
+
+ reg = TEGRA30_AHUB_CHANNEL_CTRL +
+ (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
+ val = tegra30_apbif_read(reg);
+ val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK |
+ TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_MASK);
+ val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT) |
+ TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_EN |
+ TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_16;
+ tegra30_apbif_write(reg, val);
+
+ cif_conf->direction = TEGRA30_AUDIOCIF_DIRECTION_TX;
+
+ reg = TEGRA30_AHUB_CIF_TX_CTRL +
+ (channel * TEGRA30_AHUB_CIF_TX_CTRL_STRIDE);
+ ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, cif_conf);
+
+ pm_runtime_put(ahub->dev);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra30_ahub_setup_tx_fifo);
+
int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
char *dmachan, int dmachan_len,
dma_addr_t *fiforeg)
{
int channel;
- u32 reg, val;
struct tegra30_ahub_cif_conf cif_conf;
channel = find_first_zero_bit(ahub->tx_usage,
@@ -206,37 +239,13 @@ int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_TXFIFO +
(channel * TEGRA30_AHUB_CHANNEL_TXFIFO_STRIDE);
- pm_runtime_get_sync(ahub->dev);
-
- reg = TEGRA30_AHUB_CHANNEL_CTRL +
- (channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
- val = tegra30_apbif_read(reg);
- val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK |
- TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_MASK);
- val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT) |
- TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_EN |
- TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_16;
- tegra30_apbif_write(reg, val);
-
- cif_conf.threshold = 0;
+ memset(&cif_conf, 0, sizeof(cif_conf));
cif_conf.audio_channels = 2;
cif_conf.client_channels = 2;
cif_conf.audio_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.client_bits = TEGRA30_AUDIOCIF_BITS_16;
- cif_conf.expand = 0;
- cif_conf.stereo_conv = 0;
- cif_conf.replicate = 0;
- cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_TX;
- cif_conf.truncate = 0;
- cif_conf.mono_conv = 0;
-
- reg = TEGRA30_AHUB_CIF_TX_CTRL +
- (channel * TEGRA30_AHUB_CIF_TX_CTRL_STRIDE);
- ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
- pm_runtime_put(ahub->dev);
-
- return 0;
+ return tegra30_ahub_setup_tx_fifo(*txcif, &cif_conf);
}
EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_tx_fifo);
diff --git a/sound/soc/tegra/tegra30_ahub.h b/sound/soc/tegra/tegra30_ahub.h
index 6889c5f23d02..26120aee64b3 100644
--- a/sound/soc/tegra/tegra30_ahub.h
+++ b/sound/soc/tegra/tegra30_ahub.h
@@ -490,6 +490,11 @@ void tegra30_ahub_set_cif(struct regmap *regmap, unsigned int reg,
void tegra124_ahub_set_cif(struct regmap *regmap, unsigned int reg,
struct tegra30_ahub_cif_conf *conf);
+extern int tegra30_ahub_setup_tx_fifo(enum tegra30_ahub_txcif txcif,
+ struct tegra30_ahub_cif_conf *cif_conf);
+extern int tegra30_ahub_setup_rx_fifo(enum tegra30_ahub_rxcif,
+ struct tegra30_ahub_cif_conf *cif_conf);
+
struct tegra30_ahub_soc_data {
u32 mod_list_mask;
void (*set_audio_cif)(struct regmap *regmap,
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 76fa3a086e56..a625b5c06789 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -201,9 +201,11 @@ static int tegra30_i2s_hw_params(struct snd_pcm_substream *substream,
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_RX;
+ tegra30_ahub_setup_tx_fifo(i2s->playback_fifo_cif, &cif_conf);
reg = TEGRA30_I2S_CIF_RX_CTRL;
} else {
cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_TX;
+ tegra30_ahub_setup_rx_fifo(i2s->capture_fifo_cif, &cif_conf);
reg = TEGRA30_I2S_CIF_TX_CTRL;
}
--
2.23.0
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next prev parent reply other threads:[~2019-10-07 15:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-07 15:31 [alsa-devel] tegra30 tdm support Ben Dooks
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 1/7] ASoC: tegra: add a TDM configuration callback Ben Dooks
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 2/7] ASoC: tegra: Allow 24bit and 32bit samples Ben Dooks
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 3/7] ASoC: tegra: i2s: Add support for more than 2 channels Ben Dooks
2019-10-08 15:29 ` Dmitry Osipenko
2019-10-17 16:23 ` Ben Dooks
2019-10-17 17:38 ` Dmitry Osipenko
2019-10-24 16:11 ` Jon Hunter
2019-11-05 11:58 ` Ben Dooks
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 4/7] ASoC: tegra: disable rx_fifo after disable stream Ben Dooks
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 5/7] ASoC: tegra: set i2s_offset to 0 for tdm Ben Dooks
2019-10-07 15:31 ` Ben Dooks [this message]
2019-10-07 15:31 ` [alsa-devel] [PATCH v4 7/7] ASoC: tegra: take packing settings from the audio cif_config Ben Dooks
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