linux-kernel - [PATCH AUTOSEL 4.9 01/14] ASoC: wm8804: Add ACPI support

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Message-Id: <20181005161704.20704-1-sashal@kernel.org>
Date:   Fri,  5 Oct 2018 12:16:51 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.9 01/14] ASoC: wm8804: Add ACPI support

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

[ Upstream commit 960cdd50ca9fdfeb82c2757107bcb7f93c8d7d41 ]

HID made of either Wolfson/CirrusLogic PCI ID + 8804 identifier.

This helps enumerate the HifiBerry Digi+ HAT boards on the Up2 platform.

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

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 sound/soc/codecs/wm8804-i2c.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8804-i2c.c b/sound/soc/codecs/wm8804-i2c.c
index f27464c2c5ba..79541960f45d 100644
--- a/sound/soc/codecs/wm8804-i2c.c
+++ b/sound/soc/codecs/wm8804-i2c.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/i2c.h>
+#include <linux/acpi.h>
 
 #include "wm8804.h"
 
@@ -40,17 +41,29 @@ static const struct i2c_device_id wm8804_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
 
+#if defined(CONFIG_OF)
 static const struct of_device_id wm8804_of_match[] = {
 	{ .compatible = "wlf,wm8804", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, wm8804_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id wm8804_acpi_match[] = {
+	{ "1AEC8804", 0 }, /* Wolfson PCI ID + part ID */
+	{ "10138804", 0 }, /* Cirrus Logic PCI ID + part ID */
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, wm8804_acpi_match);
+#endif
 
 static struct i2c_driver wm8804_i2c_driver = {
 	.driver = {
 		.name = "wm8804",
 		.pm = &wm8804_pm,
-		.of_match_table = wm8804_of_match,
+		.of_match_table = of_match_ptr(wm8804_of_match),
+		.acpi_match_table = ACPI_PTR(wm8804_acpi_match),
 	},
 	.probe = wm8804_i2c_probe,
 	.remove = wm8804_i2c_remove,
-- 
2.17.1