linux-kernel - [PATCH 10/20] hda: cs35l41: Add Boost type flag

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Date:   Thu, 3 Mar 2022 17:30:49 +0000
From:   Lucas Tanure <tanureal@...nsource.cirrus.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: [PATCH 10/20] hda: cs35l41: Add Boost type flag

Replace vspk_always_on by a enum that better
characterizes the system, as there is 3 types
of boost hardware.

Signed-off-by: Lucas Tanure <tanureal@...nsource.cirrus.com>
---
 include/sound/cs35l41.h     |  9 ++++++--
 sound/pci/hda/cs35l41_hda.c | 43 +++++++++++++++++++++----------------
 2 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/include/sound/cs35l41.h b/include/sound/cs35l41.h
index e3ec0f422fff..fbf38f32e36d 100644
--- a/include/sound/cs35l41.h
+++ b/include/sound/cs35l41.h
@@ -725,6 +725,12 @@
 #define CS35L41_SPI_MAX_FREQ		4000000
 #define CS35L41_REGSTRIDE		4
 
+enum cs35l41_boost_type {
+	CS35L41_INT_BOOST,
+	CS35L41_EXT_BOOST,
+	CS35L41_EXT_BOOST_NO_VSPK_SWITCH,
+};
+
 enum cs35l41_clk_ids {
 	CS35L41_CLKID_SCLK = 0,
 	CS35L41_CLKID_LRCLK = 1,
@@ -762,8 +768,7 @@ struct cs35l41_hw_cfg {
 	struct cs35l41_gpio_cfg gpio2;
 	unsigned int spk_pos;
 
-	/* Don't put the AMP in reset if VSPK can not be turned off */
-	bool vspk_always_on;
+	enum cs35l41_boost_type bst_type;
 };
 
 struct cs35l41_otp_packed_element_t {
diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 4c99dcac2dd7..17660ce71f93 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -210,20 +210,30 @@ static const struct component_ops cs35l41_hda_comp_ops = {
 static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41)
 {
 	struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
-	bool internal_boost = false;
 	int ret;
 
 	if (!cs35l41->hw_cfg.valid)
 		return -EINVAL;
 
-	if (hw_cfg->vspk_always_on) {
+	switch (hw_cfg->bst_type) {
+	case CS35L41_INT_BOOST:
+		cs35l41->reg_seq = &cs35l41_hda_reg_seq_int_bst;
+		ret = cs35l41_boost_config(cs35l41->dev, cs35l41->regmap,
+					   hw_cfg->bst_ind, hw_cfg->bst_cap, hw_cfg->bst_ipk);
+		if (ret)
+			return ret;
+		break;
+	case CS35L41_EXT_BOOST:
+		cs35l41->reg_seq = &cs35l41_hda_reg_seq_ext_bst;
+		break;
+	case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
 		cs35l41->reg_seq = &cs35l41_hda_reg_seq_no_bst;
-		return 0;
+		break;
+	default:
+		dev_err(cs35l41->dev, "Boost type %d not supported\n", hw_cfg->bst_type);
+		return -EINVAL;
 	}
 
-	if (hw_cfg->bst_ind > 0 || hw_cfg->bst_cap > 0 || hw_cfg->bst_ipk > 0)
-		internal_boost = true;
-
 	if (hw_cfg->gpio1.valid) {
 		switch (hw_cfg->gpio1.func) {
 		case CS35L41_NOT_USED:
@@ -256,16 +266,6 @@ static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41)
 
 	cs35l41_gpio_config(cs35l41->regmap, hw_cfg);
 
-	if (internal_boost) {
-		cs35l41->reg_seq = &cs35l41_hda_reg_seq_int_bst;
-		ret = cs35l41_boost_config(cs35l41->dev, cs35l41->regmap,
-					   hw_cfg->bst_ind, hw_cfg->bst_cap, hw_cfg->bst_ipk);
-		if (ret)
-			return ret;
-	} else {
-		cs35l41->reg_seq = &cs35l41_hda_reg_seq_ext_bst;
-	}
-
 	return cs35l41_hda_channel_map(cs35l41->dev, 0, NULL, 1, &hw_cfg->spk_pos);
 }
 
@@ -363,6 +363,11 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
 	else
 		hw_cfg->bst_cap = -1;
 
+	if (hw_cfg->bst_ind > 0 || hw_cfg->bst_cap > 0 || hw_cfg->bst_ipk > 0)
+		hw_cfg->bst_type = CS35L41_INT_BOOST;
+	else
+		hw_cfg->bst_type = CS35L41_EXT_BOOST;
+
 	hw_cfg->valid = true;
 	put_device(physdev);
 
@@ -388,7 +393,7 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
 	/* check I2C address to assign the index */
 	cs35l41->index = id == 0x40 ? 0 : 1;
 	cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
-	cs35l41->hw_cfg.vspk_always_on = true;
+	cs35l41->hw_cfg.bst_type = CS35L41_EXT_BOOST_NO_VSPK_SWITCH;
 	cs35l41->hw_cfg.valid = true;
 	put_device(physdev);
 
@@ -515,7 +520,7 @@ int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int i
 	return 0;
 
 err:
-	if (!cs35l41->hw_cfg.vspk_always_on)
+	if (cs35l41->hw_cfg.bst_type != CS35L41_EXT_BOOST_NO_VSPK_SWITCH)
 		gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
 	gpiod_put(cs35l41->reset_gpio);
 
@@ -529,7 +534,7 @@ void cs35l41_hda_remove(struct device *dev)
 
 	component_del(cs35l41->dev, &cs35l41_hda_comp_ops);
 
-	if (!cs35l41->hw_cfg.vspk_always_on)
+	if (cs35l41->hw_cfg.bst_type != CS35L41_EXT_BOOST_NO_VSPK_SWITCH)
 		gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
 	gpiod_put(cs35l41->reset_gpio);
 }
-- 
2.35.1