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Message-Id: <1462373686-21794-2-git-send-email-john@metanate.com>
Date: Wed, 4 May 2016 15:54:46 +0100
From: John Keeping <john@...anate.com>
To: alsa-devel@...a-project.org
Cc: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
Heiko Stuebner <heiko@...ech.de>,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
Enric Balletbo Serra <eballetbo@...il.com>,
John Keeping <john@...anate.com>
Subject: [PATCH 2/2] Revert "ASoC: rockchip: i2s: separate capture and playback"
This reverts commit eba65d179c1149cf79e68608d452631f33d7f017.
This broke audio on Veyron Jerry Chromebooks and I now cannot reproduce
the problem I was trying to fix even with this commit reverted, so it
seems that this was completely the wrong thing to do.
Reported-by: Enric Balletbo Serra <eballetbo@...il.com>
Signed-off-by: John Keeping <john@...anate.com>
---
sound/soc/rockchip/rockchip_i2s.c | 72 ++++++++++++++++++++++-----------------
1 file changed, 40 insertions(+), 32 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 34743ec61c49..574c6af28c06 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -82,8 +82,8 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
regmap_update_bits(i2s->regmap, I2S_XFER,
- I2S_XFER_TXS_START,
- I2S_XFER_TXS_START);
+ I2S_XFER_TXS_START | I2S_XFER_RXS_START,
+ I2S_XFER_TXS_START | I2S_XFER_RXS_START);
i2s->tx_start = true;
} else {
@@ -92,23 +92,27 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
- regmap_update_bits(i2s->regmap, I2S_XFER,
- I2S_XFER_TXS_START,
- I2S_XFER_TXS_STOP);
-
- regmap_update_bits(i2s->regmap, I2S_CLR,
- I2S_CLR_TXC,
- I2S_CLR_TXC);
+ if (!i2s->rx_start) {
+ regmap_update_bits(i2s->regmap, I2S_XFER,
+ I2S_XFER_TXS_START |
+ I2S_XFER_RXS_START,
+ I2S_XFER_TXS_STOP |
+ I2S_XFER_RXS_STOP);
- regmap_read(i2s->regmap, I2S_CLR, &val);
+ regmap_update_bits(i2s->regmap, I2S_CLR,
+ I2S_CLR_TXC | I2S_CLR_RXC,
+ I2S_CLR_TXC | I2S_CLR_RXC);
- /* Should wait for clear operation to finish */
- while (val & I2S_CLR_TXC) {
regmap_read(i2s->regmap, I2S_CLR, &val);
- retry--;
- if (!retry) {
- dev_warn(i2s->dev, "fail to clear\n");
- break;
+
+ /* Should wait for clear operation to finish */
+ while (val) {
+ regmap_read(i2s->regmap, I2S_CLR, &val);
+ retry--;
+ if (!retry) {
+ dev_warn(i2s->dev, "fail to clear\n");
+ break;
+ }
}
}
}
@@ -124,8 +128,8 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE);
regmap_update_bits(i2s->regmap, I2S_XFER,
- I2S_XFER_RXS_START,
- I2S_XFER_RXS_START);
+ I2S_XFER_TXS_START | I2S_XFER_RXS_START,
+ I2S_XFER_TXS_START | I2S_XFER_RXS_START);
i2s->rx_start = true;
} else {
@@ -134,23 +138,27 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE);
- regmap_update_bits(i2s->regmap, I2S_XFER,
- I2S_XFER_RXS_START,
- I2S_XFER_RXS_STOP);
-
- regmap_update_bits(i2s->regmap, I2S_CLR,
- I2S_CLR_RXC,
- I2S_CLR_RXC);
+ if (!i2s->tx_start) {
+ regmap_update_bits(i2s->regmap, I2S_XFER,
+ I2S_XFER_TXS_START |
+ I2S_XFER_RXS_START,
+ I2S_XFER_TXS_STOP |
+ I2S_XFER_RXS_STOP);
- regmap_read(i2s->regmap, I2S_CLR, &val);
+ regmap_update_bits(i2s->regmap, I2S_CLR,
+ I2S_CLR_TXC | I2S_CLR_RXC,
+ I2S_CLR_TXC | I2S_CLR_RXC);
- /* Should wait for clear operation to finish */
- while (val & I2S_CLR_RXC) {
regmap_read(i2s->regmap, I2S_CLR, &val);
- retry--;
- if (!retry) {
- dev_warn(i2s->dev, "fail to clear\n");
- break;
+
+ /* Should wait for clear operation to finish */
+ while (val) {
+ regmap_read(i2s->regmap, I2S_CLR, &val);
+ retry--;
+ if (!retry) {
+ dev_warn(i2s->dev, "fail to clear\n");
+ break;
+ }
}
}
}
--
2.8.0.rc4.238.g874082a
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