From: codekipper@gmail.com
To: maxime.ripard@free-electrons.com, wens@csie.org,
linux-sunxi@googlegroups.com
Cc: alsa-devel@alsa-project.org, Marcus Cooper <codekipper@gmail.com>,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
be17068@iperbole.bo.it, broonie@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 13/15] ASoC: sun4i-i2s: Add multichannel functionality
Date: Wed, 14 Aug 2019 08:08:52 +0200 [thread overview]
Message-ID: <20190814060854.26345-14-codekipper@gmail.com> (raw)
In-Reply-To: <20190814060854.26345-1-codekipper@gmail.com>
From: Marcus Cooper <codekipper@gmail.com>
The i2s block can be used to pass PCM data over multiple channels
and is sometimes used for the audio side of an HDMI connection.
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
---
sound/soc/sunxi/sun4i-i2s.c | 93 +++++++++++++++++++++++++------------
1 file changed, 63 insertions(+), 30 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index a020c3b372a8..a71969167053 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -617,41 +617,74 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
int lines;
channels = params_channels(params);
- if (channels != 2) {
- dev_err(dai->dev, "Unsupported number of channels: %d\n",
- channels);
- return -EINVAL;
- }
-
- lines = (channels + 1) / 2;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ if ((channels > dai->driver->playback.channels_max) ||
+ (channels < dai->driver->playback.channels_min)) {
+ dev_err(dai->dev, "Unsupported number of channels: %d\n",
+ channels);
+ return -EINVAL;
+ }
- /* Enable the required output lines */
- regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
- SUN4I_I2S_CTRL_SDO_EN_MASK,
- SUN4I_I2S_CTRL_SDO_EN(lines));
-
- if (i2s->variant->has_chcfg) {
- regmap_update_bits(i2s->regmap, SUN8I_I2S_CHAN_CFG_REG,
- SUN8I_I2S_CHAN_CFG_TX_SLOT_NUM_MASK,
- SUN8I_I2S_CHAN_CFG_TX_SLOT_NUM(channels));
- regmap_update_bits(i2s->regmap, SUN8I_I2S_CHAN_CFG_REG,
- SUN8I_I2S_CHAN_CFG_RX_SLOT_NUM_MASK,
- SUN8I_I2S_CHAN_CFG_RX_SLOT_NUM(channels));
- }
+ lines = (channels + 1) / 2;
- /* Map the channels for playback and capture */
- i2s->variant->set_txchanmap(i2s, 0, 0x76543210);
- i2s->variant->set_rxchanmap(i2s, 0x00003210);
+ /* Enable the required output lines */
+ regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
+ SUN4I_I2S_CTRL_SDO_EN_MASK,
+ SUN4I_I2S_CTRL_SDO_EN(lines));
+
+ i2s->variant->set_txchanmap(i2s, 0, 0x10);
+ i2s->variant->set_txchansel(i2s, 0, channels > 1 ? 2:1);
+
+ if (i2s->variant->set_txchanen)
+ i2s->variant->set_txchanen(i2s, 0, 2);
+
+ if (i2s->variant->has_chcfg) {
+ regmap_update_bits(i2s->regmap, SUN8I_I2S_CHAN_CFG_REG,
+ SUN8I_I2S_CHAN_CFG_TX_SLOT_NUM_MASK,
+ SUN8I_I2S_CHAN_CFG_TX_SLOT_NUM(channels));
+
+ if (channels > 2) {
+ i2s->variant->set_txchanmap(i2s, 1, 0x32);
+ i2s->variant->set_txchanoffset(i2s, 1);
+ i2s->variant->set_txchansel(i2s, 1,
+ channels > 3 ? 2:1);
+ i2s->variant->set_txchanen(i2s, 1, 2);
+ }
+ if (channels > 4) {
+ i2s->variant->set_txchanmap(i2s, 2, 0x54);
+ i2s->variant->set_txchanoffset(i2s, 2);
+ i2s->variant->set_txchansel(i2s, 2,
+ channels > 5 ? 2:1);
+ i2s->variant->set_txchanen(i2s, 2, 2);
+ }
+ if (channels > 6) {
+ i2s->variant->set_txchanmap(i2s, 3, 0x76);
+ i2s->variant->set_txchanoffset(i2s, 3);
+ i2s->variant->set_txchansel(i2s, 3,
+ channels > 6 ? 2:1);
+ i2s->variant->set_txchanen(i2s, 3, 2);
+ }
+ }
+ } else {
+ if ((channels > dai->driver->capture.channels_max) ||
+ (channels < dai->driver->capture.channels_min)) {
+ dev_err(dai->dev, "Unsupported number of channels: %d\n",
+ channels);
+ return -EINVAL;
+ }
- /* Configure the channels */
- i2s->variant->set_txchansel(i2s, 0, channels);
- i2s->variant->set_rxchansel(i2s, channels);
+ /* Map the channels for capture */
+ i2s->variant->set_rxchanmap(i2s, 0x10);
+ i2s->variant->set_rxchansel(i2s, channels);
- if (i2s->variant->set_txchanen)
- i2s->variant->set_txchanen(i2s, 0, channels);
+ if (i2s->variant->set_rxchanen)
+ i2s->variant->set_rxchanen(i2s, channels);
- if (i2s->variant->set_rxchanen)
- i2s->variant->set_rxchanen(i2s, channels);
+ if (i2s->variant->has_chcfg)
+ regmap_update_bits(i2s->regmap, SUN8I_I2S_CHAN_CFG_REG,
+ SUN8I_I2S_CHAN_CFG_RX_SLOT_NUM_MASK,
+ SUN8I_I2S_CHAN_CFG_RX_SLOT_NUM(channels));
+ }
switch (params_physical_width(params)) {
case 16:
--
2.22.0
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next prev parent reply other threads:[~2019-08-14 6:13 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-14 6:08 [PATCH v5 00/15] ASoC: sun4i-i2s: Updates to the driver codekipper
2019-08-14 6:08 ` [PATCH v5 01/15] ASoC: sun4i-i2s: Add regmap field to sign extend sample codekipper
2019-08-14 6:43 ` Maxime Ripard
2019-08-14 11:24 ` Code Kipper
2019-08-14 6:08 ` [PATCH v5 02/15] ASoC: sun4i-i2s: Add set_tdm_slot functionality codekipper
2019-08-14 7:09 ` Maxime Ripard
2019-08-16 6:27 ` Code Kipper
2019-08-14 9:30 ` Mark Brown
2019-08-16 6:22 ` Code Kipper
2019-08-14 6:08 ` [PATCH v5 03/15] ASoC: sun4i-i2s: Correct divider calculations codekipper
2019-08-14 7:13 ` Maxime Ripard
2019-08-14 9:31 ` Mark Brown
2019-08-14 6:08 ` [PATCH v5 04/15] ASoC: sun4i-i2s: Support more formats on newer SoCs codekipper
2019-08-14 7:16 ` Maxime Ripard
2019-08-14 11:23 ` Code Kipper
2019-08-14 6:08 ` [PATCH v5 05/15] ASoC: sun4i-i2s: Add functions for RX and TX channel offsets codekipper
2019-08-14 6:08 ` [PATCH v5 06/15] ASoC: sun4i-i2s: Add functions for RX and TX channel enables codekipper
2019-08-14 6:08 ` [PATCH v5 07/15] ASoC: sun4i-i2s: Add functions for RX and TX channel selects codekipper
2019-08-14 6:08 ` [PATCH v5 08/15] ASoC: sun4i-i2s: Add functions for channel mapping codekipper
2019-08-14 6:08 ` [PATCH v5 09/15] clk: sunxi-ng: h6: Allow I2S to change parent rate codekipper
2019-08-21 4:07 ` [linux-sunxi] " Chen-Yu Tsai
2019-08-21 5:52 ` Code Kipper
2019-08-21 6:01 ` Chen-Yu Tsai
2019-08-21 9:19 ` Code Kipper
2019-08-21 9:35 ` [linux-sunxi] " Chen-Yu Tsai
2019-08-14 6:08 ` [PATCH v5 10/15] dt-bindings: ASoC: sun4i-i2s: Add H6 compatible codekipper
2019-08-14 6:08 ` [PATCH v5 11/15] ASoC: sun4i-i2s: Add support for H6 I2S codekipper
2019-08-14 7:57 ` Jernej Škrabec
2019-08-14 11:08 ` Code Kipper
2019-08-14 6:08 ` [PATCH v5 12/15] ASoC: sun4i-i2s: Add multi-lane functionality codekipper
2019-08-14 7:20 ` Maxime Ripard
2019-08-14 11:16 ` Code Kipper
2019-08-14 8:27 ` [linux-sunxi] " Jernej Škrabec
2019-08-14 6:08 ` codekipper [this message]
2019-08-14 6:08 ` [PATCH v5 14/15] ASoc: sun4i-i2s: Add 20, 24 and 32 bit support codekipper
2019-08-14 8:28 ` [linux-sunxi] " Jernej Škrabec
2019-08-14 9:03 ` Code Kipper
2019-08-14 6:08 ` [PATCH v5 15/15] ASoC: sun4i-i2s: Adjust regmap settings codekipper
2019-08-14 7:20 ` Maxime Ripard
2019-08-14 11:31 ` [linux-sunxi] " Jernej Škrabec
2019-08-14 8:37 ` [linux-sunxi] " Jernej Škrabec
2019-08-14 9:02 ` Code Kipper
2019-08-14 11:31 ` Chen-Yu Tsai
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