linux-kernel - [PATCH v2 2/2] mfd: intel_soc_pmic_crc: Add support for non ACPI instantiated i2c

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Message-ID: <20241104150655.41402-3-hdegoede@redhat.com>
Date: Mon,  4 Nov 2024 16:06:55 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Lee Jones <lee@...nel.org>,
	Andy Shevchenko <andy@...nel.org>
Cc: Hans de Goede <hdegoede@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] 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>
---
Changes in v2:
- Use "intel_soc_pmic_crc" as i2c_device_id.name
---
 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 663a9e93ce87..879fbf5cd162 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_soc_pmic_crc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, crystal_cove_i2c_match);
+
 static struct i2c_driver crystal_cove_i2c_driver = {
 	.driver = {
 		.name = "intel_soc_pmic_crc",
 		.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