linux-kernel - [PATCH v3 07/11] ASoC: sun4i-i2s: Add mclk enable regmap field

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Message-Id: <20170812110059.5115-8-codekipper@gmail.com>
Date:   Sat, 12 Aug 2017 13:00:55 +0200
From:   codekipper@...il.com
To:     maxime.ripard@...e-electrons.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
        lgirdwood@...il.com, broonie@...nel.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        be17068@...rbole.bo.it, Marcus Cooper <codekipper@...il.com>
Subject: [PATCH v3 07/11] ASoC: sun4i-i2s: Add mclk enable regmap field

From: Marcus Cooper <codekipper@...il.com>

The location of the mclk output enable bit is different on newer
SoCs. Use a regmap field to enable it.

Signed-off-by: Marcus Cooper <codekipper@...il.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index a389cdf8c4dc..33af99076d62 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -101,6 +101,7 @@
  * @mclk_offset: Value by which mclkdiv needs to be adjusted.
  * @bclk_offset: Value by which bclkdiv needs to be adjusted.
  * @fmt_offset: Value by which wss and sr needs to be adjusted.
+ * @field_clkdiv_mclk_en: regmap field to enable mclk output.
  * @field_fmt_wss: regmap field to set word select size.
  * @field_fmt_sr: regmap field to set sample resolution.
  * @field_fmt_bclk: regmap field to set clk polarity.
@@ -119,6 +120,7 @@ struct sun4i_i2s_quirks {
 	unsigned int			fmt_offset;
 
 	/* Register fields for i2s */
+	struct reg_field		field_clkdiv_mclk_en;
 	struct reg_field		field_fmt_wss;
 	struct reg_field		field_fmt_sr;
 	struct reg_field		field_fmt_bclk;
@@ -141,6 +143,7 @@ struct sun4i_i2s {
 	struct snd_dmaengine_dai_dma_data	playback_dma_data;
 
 	/* Register fields for i2s */
+	struct regmap_field	*field_clkdiv_mclk_en;
 	struct regmap_field	*field_fmt_wss;
 	struct regmap_field	*field_fmt_sr;
 	struct regmap_field	*field_fmt_bclk;
@@ -283,8 +286,9 @@ static int sun4i_i2s_set_clk_rate(struct sun4i_i2s *i2s,
 
 	regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
 		     SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
-		     SUN4I_I2S_CLK_DIV_MCLK(mclk_div) |
-		     SUN4I_I2S_CLK_DIV_MCLK_EN);
+		     SUN4I_I2S_CLK_DIV_MCLK(mclk_div));
+
+	regmap_field_write(i2s->field_clkdiv_mclk_en, 1);
 
 	return 0;
 }
@@ -713,6 +717,7 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
 	.has_reset		= false,
 	.reg_offset_txdata	= SUN4I_I2S_FIFO_TX_REG,
 	.sun4i_i2s_regmap	= &sun4i_i2s_regmap_config,
+	.field_clkdiv_mclk_en	= REG_FIELD(SUN4I_I2S_CLK_DIV_REG, 7, 7),
 	.field_fmt_wss		= REG_FIELD(SUN4I_I2S_FMT0_REG, 2, 3),
 	.field_fmt_sr		= REG_FIELD(SUN4I_I2S_FMT0_REG, 4, 5),
 	.field_fmt_bclk		= REG_FIELD(SUN4I_I2S_FMT0_REG, 6, 6),
@@ -727,6 +732,7 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
 	.has_reset		= true,
 	.reg_offset_txdata	= SUN4I_I2S_FIFO_TX_REG,
 	.sun4i_i2s_regmap	= &sun4i_i2s_regmap_config,
+	.field_clkdiv_mclk_en	= REG_FIELD(SUN4I_I2S_CLK_DIV_REG, 7, 7),
 	.field_fmt_wss		= REG_FIELD(SUN4I_I2S_FMT0_REG, 2, 3),
 	.field_fmt_sr		= REG_FIELD(SUN4I_I2S_FMT0_REG, 4, 5),
 	.field_fmt_bclk		= REG_FIELD(SUN4I_I2S_FMT0_REG, 6, 6),
@@ -742,10 +748,17 @@ static int sun4i_i2s_init_regmap_fields(struct device *dev,
 {
 	int ret;
 
-	i2s->field_txchanmap =
+	i2s->field_clkdiv_mclk_en =
 		devm_regmap_field_alloc(dev, i2s->regmap,
-					i2s->variant->field_txchanmap);
-	ret = PTR_ERR_OR_ZERO(i2s->field_txchanmap);
+					i2s->variant->field_clkdiv_mclk_en);
+	ret = PTR_ERR_OR_ZERO(i2s->field_clkdiv_mclk_en);
+
+	if (!ret) {
+		i2s->field_txchanmap =
+			devm_regmap_field_alloc(dev, i2s->regmap,
+						i2s->variant->field_txchanmap);
+		ret = PTR_ERR_OR_ZERO(i2s->field_txchanmap);
+	}
 
 	if (!ret) {
 		i2s->field_rxchanmap =
-- 
2.14.1