From: John Keeping <john@metanate.com>
To: linux-rockchip@lists.infradead.org
Cc: John Keeping <john@metanate.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>, Heiko Stuebner <heiko@sntech.de>,
alsa-devel@alsa-project.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] ASoC: rockchip: i2s: separate capture and playback
Date: Wed, 9 Dec 2015 10:32:26 +0000 [thread overview]
Message-ID: <1449657147-26959-1-git-send-email-john@metanate.com> (raw)
If we only clear the tx/rx state when both are disabled it is not
possible to start/stop one multiple times while the other is running.
Since the two are independently controlled, treat them as such and
remove the false dependency between capture and playback.
Signed-off-by: John Keeping <john@metanate.com>
---
sound/soc/rockchip/rockchip_i2s.c | 72 +++++++++++++++++----------------------
1 file changed, 32 insertions(+), 40 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 83b1b9c..acc6225 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_RXS_START,
- I2S_XFER_TXS_START | I2S_XFER_RXS_START);
+ I2S_XFER_TXS_START,
+ I2S_XFER_TXS_START);
i2s->tx_start = true;
} else {
@@ -92,27 +92,23 @@ 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);
- 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_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_RXC,
- I2S_CLR_TXC | I2S_CLR_RXC);
+ regmap_update_bits(i2s->regmap, I2S_CLR,
+ I2S_CLR_TXC,
+ I2S_CLR_TXC);
- regmap_read(i2s->regmap, I2S_CLR, &val);
+ regmap_read(i2s->regmap, I2S_CLR, &val);
- /* 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;
- }
+ /* 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;
}
}
}
@@ -128,8 +124,8 @@ 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_TXS_START | I2S_XFER_RXS_START,
- I2S_XFER_TXS_START | I2S_XFER_RXS_START);
+ I2S_XFER_RXS_START,
+ I2S_XFER_RXS_START);
i2s->rx_start = true;
} else {
@@ -138,27 +134,23 @@ 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);
- 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_update_bits(i2s->regmap, I2S_XFER,
+ I2S_XFER_RXS_START,
+ I2S_XFER_RXS_STOP);
- regmap_update_bits(i2s->regmap, I2S_CLR,
- I2S_CLR_TXC | I2S_CLR_RXC,
- I2S_CLR_TXC | I2S_CLR_RXC);
+ regmap_update_bits(i2s->regmap, I2S_CLR,
+ I2S_CLR_RXC,
+ I2S_CLR_RXC);
- regmap_read(i2s->regmap, I2S_CLR, &val);
+ regmap_read(i2s->regmap, I2S_CLR, &val);
- /* 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;
- }
+ /* 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;
}
}
}
--
2.6.3.462.gbe2c914
next reply other threads:[~2015-12-09 10:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-09 10:32 John Keeping [this message]
[not found] ` <1449657147-26959-1-git-send-email-john-HooS5bfzL4hWk0Htik3J/w@public.gmane.org>
2015-12-09 10:32 ` [PATCH 2/2] ASoC: rockchip: i2s: remove unused variables John Keeping
2015-12-09 20:44 ` Applied "ASoC: rockchip: i2s: remove unused variables" to the asoc tree Mark Brown
2015-12-09 20:44 ` Applied "ASoC: rockchip: i2s: separate capture and playback" " Mark Brown
2016-04-29 14:55 ` [PATCH 1/2] ASoC: rockchip: i2s: separate capture and playback Enric Balletbo Serra
2016-04-29 14:59 ` Enric Balletbo Serra
[not found] ` <CAFqH_52C4JKno4uyt54UdWKAJKM4FPGRiQaQQ9_H-Mz1Cr+Hqg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-30 7:00 ` John Keeping
2016-05-02 9:13 ` Enric Balletbo Serra
2016-05-03 4:12 ` sugar
2016-05-03 9:16 ` Enric Balletbo Serra
2016-05-03 9:43 ` [alsa-devel] " John Keeping
2016-05-03 10:21 ` Enric Balletbo Serra
2016-05-03 10:32 ` John Keeping
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