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From:   Lucas Tanure <tanureal@opensource.cirrus.com>
To:     Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
CC:     <alsa-devel@alsa-project.org>, <patches@opensource.cirrus.com>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Lucas Tanure <tanureal@opensource.cirrus.com>
Subject: [PATCH v2 17/20] hda: cs35l41: Handle all external boost setups the same way
Date:   Fri, 4 Mar 2022 15:07:18 +0000
Message-ID: <20220304150721.3802-18-tanureal@opensource.cirrus.com>
In-Reply-To: <20220304150721.3802-1-tanureal@opensource.cirrus.com>
References: <20220304150721.3802-1-tanureal@opensource.cirrus.com>
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Precedence: bulk

Regmap sequences for external boost with or without the GPIO1
as VSPK switch are almost the same.
Unify them and use the GPIO1 VSPK switch to handle the difference.

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
---
 sound/pci/hda/cs35l41_hda.c | 60 +++++++++++++++----------------------
 1 file changed, 24 insertions(+), 36 deletions(-)

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index fda4af323c32..2ae074c8613e 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -32,33 +32,9 @@ static const struct reg_sequence cs35l41_hda_mute[] = {
 	{ CS35L41_AMP_DIG_VOL_CTRL,	0x0000A678 }, // AMP_VOL_PCM Mute
 };
 
-// only on amps where GPIO1 is used to control ext. VSPK switch
-static const struct reg_sequence cs35l41_start_ext_vspk[] = {
+static const struct reg_sequence cs35l41_safe_to_reset[] = {
 	{ 0x00000040,			0x00000055 },
 	{ 0x00000040,			0x000000AA },
-	{ 0x00007438,			0x00585941 },
-	{ 0x00007414,			0x08C82222 },
-	{ 0x0000742C,			0x00000009 },
-	{ 0x00011008,			0x00008001 },
-	{ 0x0000742C,			0x0000000F },
-	{ 0x0000742C,			0x00000079 },
-	{ 0x00007438,			0x00585941 },
-	{ CS35L41_PWR_CTRL1,		0x00000001, 3000}, // set GLOBAL_EN = 1
-	{ 0x0000742C,			0x000000F9 },
-	{ 0x00007438,			0x00580941 },
-	{ 0x00000040,			0x000000CC },
-	{ 0x00000040,			0x00000033 },
-};
-
-//only on amps where GPIO1 is used to control ext. VSPK switch
-static const struct reg_sequence cs35l41_stop_ext_vspk[] = {
-	{ 0x00000040,			0x00000055 },
-	{ 0x00000040,			0x000000AA },
-	{ 0x00007438,			0x00585941 },
-	{ 0x00002014,			0x00000000, 3000}, // set GLOBAL_EN = 0
-	{ 0x0000742C,			0x00000009 },
-	{ 0x00007438,			0x00580941 },
-	{ 0x00011008,			0x00000001 },
 	{ 0x0000393C,			0x000000C0, 6000},
 	{ 0x0000393C,			0x00000000 },
 	{ 0x00007414,			0x00C82222 },
@@ -73,7 +49,7 @@ static const struct reg_sequence cs35l41_safe_to_active[] = {
 	{ 0x0000742C,			0x0000000F },
 	{ 0x0000742C,			0x00000079 },
 	{ 0x00007438,			0x00585941 },
-	{ CS35L41_PWR_CTRL1,		0x00000001, 2000 }, // GLOBAL_EN = 1
+	{ CS35L41_PWR_CTRL1,		0x00000001, 3000 }, // GLOBAL_EN = 1
 	{ 0x0000742C,			0x000000F9 },
 	{ 0x00007438,			0x00580941 },
 	{ 0x00000040,			0x000000CC },
@@ -85,7 +61,7 @@ static const struct reg_sequence cs35l41_active_to_safe[] = {
 	{ 0x00000040,			0x000000AA },
 	{ 0x00007438,			0x00585941 },
 	{ CS35L41_PWR_CTRL1,		0x00000000 },
-	{ 0x0000742C,			0x00000009, 2000 },
+	{ 0x0000742C,			0x00000009, 3000 },
 	{ 0x00007438,			0x00580941 },
 	{ 0x00000040,			0x000000CC },
 	{ 0x00000040,			0x00000033 },
@@ -101,6 +77,21 @@ static const struct reg_sequence cs35l41_reset_to_safe[] = {
 	{ 0x00000040,			0x00000033 },
 };
 
+static bool cs35l41_hda_safe_reset(struct cs35l41_hda *cs35l41)
+{
+	switch (cs35l41->hw_cfg.bst_type) {
+	case CS35L41_EXT_BOOST:
+		regmap_write(cs35l41->regmap, CS35L41_GPIO1_CTRL1, 0x00000001);
+		regmap_multi_reg_write(cs35l41->regmap, cs35l41_safe_to_reset,
+				       ARRAY_SIZE(cs35l41_safe_to_reset));
+		return true;
+	case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
+		return false;
+	default:
+		return true;
+	}
+};
+
 static int cs35l41_hda_global_enable(struct cs35l41_hda *cs35l41, int enable)
 {
 	int ret;
@@ -113,13 +104,6 @@ static int cs35l41_hda_global_enable(struct cs35l41_hda *cs35l41, int enable)
 		usleep_range(3000, 3100);
 		break;
 	case CS35L41_EXT_BOOST:
-		if (enable)
-			ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41_start_ext_vspk,
-						     ARRAY_SIZE(cs35l41_start_ext_vspk));
-		else
-			ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41_stop_ext_vspk,
-						     ARRAY_SIZE(cs35l41_stop_ext_vspk));
-		break;
 	case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
 		if (enable)
 			ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41_safe_to_active,
@@ -147,6 +131,8 @@ static void cs35l41_hda_playback_hook(struct device *dev, int action)
 		regmap_multi_reg_write(reg, cs35l41_hda_config, ARRAY_SIZE(cs35l41_hda_config));
 		ret = regmap_update_bits(reg, CS35L41_PWR_CTRL2,
 					 CS35L41_AMP_EN_MASK, 1 << CS35L41_AMP_EN_SHIFT);
+		if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
+			regmap_write(reg, CS35L41_GPIO1_CTRL1, 0x00008001);
 		break;
 	case HDA_GEN_PCM_ACT_PREPARE:
 		ret = cs35l41_hda_global_enable(cs35l41, 1);
@@ -158,6 +144,8 @@ static void cs35l41_hda_playback_hook(struct device *dev, int action)
 	case HDA_GEN_PCM_ACT_CLOSE:
 		ret = regmap_update_bits(reg, CS35L41_PWR_CTRL2,
 					 CS35L41_AMP_EN_MASK, 0 << CS35L41_AMP_EN_SHIFT);
+		if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
+			regmap_write(reg, CS35L41_GPIO1_CTRL1, 0x00000001);
 		break;
 	default:
 		dev_warn(cs35l41->dev, "Playback action not supported: %d\n", action);
@@ -517,7 +505,7 @@ int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int i
 	return 0;
 
 err:
-	if (cs35l41->hw_cfg.bst_type != CS35L41_EXT_BOOST_NO_VSPK_SWITCH)
+	if (cs35l41_hda_safe_reset(cs35l41))
 		gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
 	gpiod_put(cs35l41->reset_gpio);
 
@@ -531,7 +519,7 @@ void cs35l41_hda_remove(struct device *dev)
 
 	component_del(cs35l41->dev, &cs35l41_hda_comp_ops);
 
-	if (cs35l41->hw_cfg.bst_type != CS35L41_EXT_BOOST_NO_VSPK_SWITCH)
+	if (cs35l41_hda_safe_reset(cs35l41))
 		gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
 	gpiod_put(cs35l41->reset_gpio);
 }
-- 
2.35.1