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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 v3 1/9] ASoC: sun4i-i2s: Adjust regmap settings
Date: Fri, 21 Dec 2018 16:21:02 +0100	[thread overview]
Message-ID: <20181221152110.17982-2-codekipper@gmail.com> (raw)
In-Reply-To: <20181221152110.17982-1-codekipper@gmail.com>

From: Marcus Cooper <codekipper@gmail.com>

Bypass the regmap cache when flushing the i2s FIFOs and modify the tables
to reflect this.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index d5ec1a20499d..64d073cb2aee 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -548,9 +548,11 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 static void sun4i_i2s_start_capture(struct sun4i_i2s *i2s)
 {
 	/* Flush RX FIFO */
+	regcache_cache_bypass(i2s->regmap, true);
 	regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
 			   SUN4I_I2S_FIFO_CTRL_FLUSH_RX,
 			   SUN4I_I2S_FIFO_CTRL_FLUSH_RX);
+	regcache_cache_bypass(i2s->regmap, false);
 
 	/* Clear RX counter */
 	regmap_write(i2s->regmap, SUN4I_I2S_RX_CNT_REG, 0);
@@ -569,9 +571,11 @@ static void sun4i_i2s_start_capture(struct sun4i_i2s *i2s)
 static void sun4i_i2s_start_playback(struct sun4i_i2s *i2s)
 {
 	/* Flush TX FIFO */
+	regcache_cache_bypass(i2s->regmap, true);
 	regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
 			   SUN4I_I2S_FIFO_CTRL_FLUSH_TX,
 			   SUN4I_I2S_FIFO_CTRL_FLUSH_TX);
+	regcache_cache_bypass(i2s->regmap, false);
 
 	/* Clear TX counter */
 	regmap_write(i2s->regmap, SUN4I_I2S_TX_CNT_REG, 0);
@@ -703,13 +707,7 @@ static const struct snd_soc_component_driver sun4i_i2s_component = {
 
 static bool sun4i_i2s_rd_reg(struct device *dev, unsigned int reg)
 {
-	switch (reg) {
-	case SUN4I_I2S_FIFO_TX_REG:
-		return false;
-
-	default:
-		return true;
-	}
+	return true;
 }
 
 static bool sun4i_i2s_wr_reg(struct device *dev, unsigned int reg)
@@ -728,6 +726,8 @@ static bool sun4i_i2s_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case SUN4I_I2S_FIFO_RX_REG:
+	case SUN4I_I2S_FIFO_TX_REG:
+	case SUN4I_I2S_FIFO_STA_REG:
 	case SUN4I_I2S_INT_STA_REG:
 	case SUN4I_I2S_RX_CNT_REG:
 	case SUN4I_I2S_TX_CNT_REG:
@@ -738,23 +738,12 @@ static bool sun4i_i2s_volatile_reg(struct device *dev, unsigned int reg)
 	}
 }
 
-static bool sun8i_i2s_rd_reg(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case SUN8I_I2S_FIFO_TX_REG:
-		return false;
-
-	default:
-		return true;
-	}
-}
-
 static bool sun8i_i2s_volatile_reg(struct device *dev, unsigned int reg)
 {
 	if (reg == SUN8I_I2S_INT_STA_REG)
 		return true;
 	if (reg == SUN8I_I2S_FIFO_TX_REG)
-		return false;
+		return true;
 
 	return sun4i_i2s_volatile_reg(dev, reg);
 }
@@ -809,7 +798,7 @@ static const struct regmap_config sun8i_i2s_regmap_config = {
 	.reg_defaults	= sun8i_i2s_reg_defaults,
 	.num_reg_defaults	= ARRAY_SIZE(sun8i_i2s_reg_defaults),
 	.writeable_reg	= sun4i_i2s_wr_reg,
-	.readable_reg	= sun8i_i2s_rd_reg,
+	.readable_reg	= sun4i_i2s_rd_reg,
 	.volatile_reg	= sun8i_i2s_volatile_reg,
 };
 
-- 
2.20.1


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  reply	other threads:[~2018-12-21 15:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-21 15:21 [PATCH v3 0/9] ASoC: sun4i-i2s: Updates to the driver codekipper
2018-12-21 15:21 ` codekipper [this message]
2018-12-21 16:44   ` [PATCH v3 1/9] ASoC: sun4i-i2s: Adjust regmap settings Chen-Yu Tsai
2018-12-22 22:12     ` [alsa-devel] " Jonas Karlman
2018-12-23  3:16       ` Chen-Yu Tsai
2019-01-09 18:49         ` Mark Brown
2019-01-09 18:46     ` Mark Brown
2018-12-21 15:21 ` [PATCH v3 2/9] ASoC: sun4i-i2s: Add regmap field to sign extend sample codekipper
2018-12-21 17:06   ` Chen-Yu Tsai
2018-12-21 15:21 ` [PATCH v3 3/9] ASoc: sun4i-i2s: Add 20, 24 and 32 bit support codekipper
2018-12-21 16:48   ` Chen-Yu Tsai
2018-12-21 17:15     ` Chen-Yu Tsai
2018-12-21 15:21 ` [PATCH v3 4/9] ASoC: sun4i-i2s: Fix offset mask codekipper
2018-12-21 16:54   ` Chen-Yu Tsai
2019-01-09 18:50     ` Mark Brown
2018-12-21 15:21 ` [PATCH v3 5/9] ASoC: sun4i-i2s: Correct divider calculations codekipper
2018-12-21 15:21 ` [PATCH v3 6/9] ASoC: sun4i-i2s: Add multi-lane functionality codekipper
2018-12-21 15:21 ` [PATCH v3 7/9] ASoC: sun4i-i2s: Do not divide clocks when slave codekipper
2018-12-21 15:21 ` [PATCH v3 8/9] ASoC: sun4i-i2s: Add set_tdm_slot functionality codekipper
2018-12-21 15:21 ` [PATCH v3 9/9] ASoC: sun4i-i2s: Add multichannel functionality codekipper

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