linux-kernel - [PATCH] mfd: intel_soc_pmic_crc: Add support for non ACPI instantiated i2c

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Message-ID: <20241025083712.15070-1-hdegoede@redhat.com>
Date: Fri, 25 Oct 2024 10:37:12 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Andy Shevchenko <andy@...nel.org>,
	Lee Jones <lee@...nel.org>
Cc: Hans de Goede <hdegoede@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mfd: intel_soc_pmic_crc: Add support for non ACPI instantiated i2c_client

On some x86 Bay Trail tablets which shipped with Android as factory OS,
the DSDT is so broken that the PMIC needs to be manually instantiated by
the special x86-android-tablets.ko "fixup" driver for cases like this.

Add an i2c_device_id table so that the driver can match on manually
instantiated i2c_client-s (which lack an ACPI fwnode to match on).

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 drivers/mfd/intel_soc_pmic_crc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mfd/intel_soc_pmic_crc.c b/drivers/mfd/intel_soc_pmic_crc.c
index 876d017f74fe..ba22458ccb84 100644
--- a/drivers/mfd/intel_soc_pmic_crc.c
+++ b/drivers/mfd/intel_soc_pmic_crc.c
@@ -259,12 +259,19 @@ static const struct acpi_device_id crystal_cove_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, crystal_cove_acpi_match);
 
+static const struct i2c_device_id crystal_cove_i2c_match[] = {
+	{ "intel-crystal-cove" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, crystal_cove_i2c_match);
+
 static struct i2c_driver crystal_cove_i2c_driver = {
 	.driver = {
 		.name = "crystal_cove_i2c",
 		.pm = pm_sleep_ptr(&crystal_cove_pm_ops),
 		.acpi_match_table = crystal_cove_acpi_match,
 	},
+	.id_table = crystal_cove_i2c_match,
 	.probe = crystal_cove_i2c_probe,
 	.remove = crystal_cove_i2c_remove,
 	.shutdown = crystal_cove_shutdown,
-- 
2.47.0