ALSA: hda: cs35l41: Support systems with missing _DSD properties

Some systems using CS35L41 with HDA were released without some
required _DSD properties in ACPI. To support these special cases,
add an api to configure the correct properties for systems with
this issue.

This initial commit moves the no _DSD support for Lenovo
Legion Laptops (CLSA0100, CLSA0101) into a new framework which
can be extended to support additional laptops in the future.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230815161033.3519-1-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 15 insertions, 50 deletions

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 825e551be9bb..f9b77353c266 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -19,6 +19,7 @@
 #include "hda_component.h"
 #include "cs35l41_hda.h"
 #include "hda_cs_dsp_ctl.h"
+#include "cs35l41_hda_property.h"
 
 #define CS35L41_FIRMWARE_ROOT "cirrus/"
 #define CS35L41_PART "cs35l41"
@@ -1315,8 +1316,7 @@ static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41)
 	return cs35l41_hda_channel_map(cs35l41->dev, 0, NULL, 1, &hw_cfg->spk_pos);
 }
 
-static int cs35l41_get_speaker_id(struct device *dev, int amp_index,
-				  int num_amps, int fixed_gpio_id)
+int cs35l41_get_speaker_id(struct device *dev, int amp_index, int num_amps, int fixed_gpio_id)
 {
 	struct gpio_desc *speaker_id_desc;
 	int speaker_id = -ENODEV;
@@ -1370,49 +1370,6 @@ static int cs35l41_get_speaker_id(struct device *dev, int amp_index,
 	return speaker_id;
 }
 
-/*
- * Device CLSA010(0/1) doesn't have _DSD so a gpiod_get by the label reset won't work.
- * And devices created by serial-multi-instantiate don't have their device struct
- * pointing to the correct fwnode, so acpi_dev must be used here.
- * And devm functions expect that the device requesting the resource has the correct
- * fwnode.
- */
-static int cs35l41_no_acpi_dsd(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
-			       const char *hid)
-{
-	struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
-
-	/* check I2C address to assign the index */
-	cs35l41->index = id == 0x40 ? 0 : 1;
-	cs35l41->channel_index = 0;
-	cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
-	cs35l41->speaker_id = cs35l41_get_speaker_id(physdev, 0, 0, 2);
-	hw_cfg->spk_pos = cs35l41->index;
-	hw_cfg->gpio2.func = CS35L41_INTERRUPT;
-	hw_cfg->gpio2.valid = true;
-	hw_cfg->valid = true;
-
-	if (strncmp(hid, "CLSA0100", 8) == 0) {
-		hw_cfg->bst_type = CS35L41_EXT_BOOST_NO_VSPK_SWITCH;
-	} else if (strncmp(hid, "CLSA0101", 8) == 0) {
-		hw_cfg->bst_type = CS35L41_EXT_BOOST;
-		hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
-		hw_cfg->gpio1.valid = true;
-	} else {
-		/*
-		 * Note: CLSA010(0/1) are special cases which use a slightly different design.
-		 * All other HIDs e.g. CSC3551 require valid ACPI _DSD properties to be supported.
-		 */
-		dev_err(cs35l41->dev, "Error: ACPI _DSD Properties are missing for HID %s.\n", hid);
-		hw_cfg->valid = false;
-		hw_cfg->gpio1.valid = false;
-		hw_cfg->gpio2.valid = false;
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, int id)
 {
 	struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
@@ -1438,12 +1395,17 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
 		sub = NULL;
 	cs35l41->acpi_subsystem_id = sub;
 
+	ret = cs35l41_add_dsd_properties(cs35l41, physdev, id, hid);
+	if (!ret) {
+		dev_info(cs35l41->dev, "Using extra _DSD properties, bypassing _DSD in ACPI\n");
+		goto put_physdev;
+	}
+
 	property = "cirrus,dev-index";
 	ret = device_property_count_u32(physdev, property);
-	if (ret <= 0) {
-		ret = cs35l41_no_acpi_dsd(cs35l41, physdev, id, hid);
-		goto err_put_physdev;
-	}
+	if (ret <= 0)
+		goto err;
+
 	if (ret > ARRAY_SIZE(values)) {
 		ret = -EINVAL;
 		goto err;
@@ -1533,7 +1495,10 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i
 
 err:
 	dev_err(cs35l41->dev, "Failed property %s: %d\n", property, ret);
-err_put_physdev:
+	hw_cfg->valid = false;
+	hw_cfg->gpio1.valid = false;
+	hw_cfg->gpio2.valid = false;
+put_physdev:
 	put_device(physdev);
 
 	return ret;