linux-kernel - [PATCH] ASoC: wm8960: Add ACPI support

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Date:   Wed, 27 Apr 2022 22:29:16 +0100
From:   Nicola Lunghi <nick83ola@...il.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Nicola Lunghi <nick83ola@...il.com>,
        patches@...nsource.cirrus.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: wm8960: Add ACPI support

HID made of either Wolfson/CirrusLogic PCI ID + 8960 identifier

This helps enumerate the Waveshare WM8960 WM8960 Hi-Fi Sound
Card HAT on the Up2 platform.

The scripts at https://github.com/thesofproject/acpi-scripts
can be used to add the ACPI initrd overlay.

This commit is similar to the commit:
960cdd50ca9f ("ASoC: wm8804: Add ACPI support")

Signed-off-by: Nicola Lunghi <nick83ola@...il.com>
---
 sound/soc/codecs/wm8960.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index ca7660f4bb05..08c87ac16137 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -14,6 +14,7 @@
 #include <linux/pm.h>
 #include <linux/clk.h>
 #include <linux/i2c.h>
+#include <linux/acpi.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -1498,16 +1499,28 @@ static const struct i2c_device_id wm8960_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
 
+#if defined(CONFIG_OF)
 static const struct of_device_id wm8960_of_match[] = {
        { .compatible = "wlf,wm8960", },
        { }
 };
 MODULE_DEVICE_TABLE(of, wm8960_of_match);
+#endif
+
+#if defined(CONFIG_ACPI)
+static const struct acpi_device_id wm8960_acpi_match[] = {
+	{ "1AEC8960", 0 }, /* Wolfson PCI ID + part ID */
+	{ "10138960", 0 }, /* Cirrus Logic PCI ID + part ID */
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match);
+#endif
 
 static struct i2c_driver wm8960_i2c_driver = {
 	.driver = {
 		.name = "wm8960",
-		.of_match_table = wm8960_of_match,
+		.of_match_table = of_match_ptr(wm8960_of_match),
+		.acpi_match_table = ACPI_PTR(wm8960_acpi_match),
 	},
 	.probe =    wm8960_i2c_probe,
 	.remove =   wm8960_i2c_remove,
-- 
2.34.1