linux-kernel - [PATCH next] i2c: i2c-hisi: Add support for initializing control module via DT

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Message-ID: <20220822010031.97769-1-chenweilong@huawei.com>
Date:   Mon, 22 Aug 2022 09:00:31 +0800
From:   Weilong Chen <chenweilong@...wei.com>
To:     <yangyicong@...ilicon.com>, <wsa@...nel.org>,
        <chenweilong@...wei.com>
CC:     <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH next] i2c: i2c-hisi: Add support for initializing control module via DT

The HiSilicon I2C controller can be used on embedded platform, which
boot from devicetree.

Signed-off-by: Weilong Chen <chenweilong@...wei.com>
---
 drivers/i2c/busses/Kconfig    |  2 +-
 drivers/i2c/busses/i2c-hisi.c | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 7284206b278b..6d0fdf48e97d 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -673,7 +673,7 @@ config I2C_HIGHLANDER
 
 config I2C_HISI
 	tristate "HiSilicon I2C controller"
-	depends on (ARM64 && ACPI) || COMPILE_TEST
+	depends on ARM64 || COMPILE_TEST
 	help
 	  Say Y here if you want to have Hisilicon I2C controller support
 	  available on the Kunpeng Server.
diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c
index 76c3d8f6fc3c..cba9a6830b23 100644
--- a/drivers/i2c/busses/i2c-hisi.c
+++ b/drivers/i2c/busses/i2c-hisi.c
@@ -16,6 +16,8 @@
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/units.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
 
 #define HISI_I2C_FRAME_CTRL		0x0000
 #define   HISI_I2C_FRAME_CTRL_SPEED_MODE	GENMASK(1, 0)
@@ -483,17 +485,26 @@ static int hisi_i2c_probe(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_ACPI
 static const struct acpi_device_id hisi_i2c_acpi_ids[] = {
 	{ "HISI03D1", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, hisi_i2c_acpi_ids);
+#endif
+
+static const struct of_device_id hisi_i2c_dts_ids[] = {
+	{ .compatible = "hisilicon,hisi-i2c", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hisi_i2c_dts_ids);
 
 static struct platform_driver hisi_i2c_driver = {
 	.probe		= hisi_i2c_probe,
 	.driver		= {
 		.name	= "hisi-i2c",
-		.acpi_match_table = hisi_i2c_acpi_ids,
+		.acpi_match_table = ACPI_PTR(hisi_i2c_acpi_ids),
+		.of_match_table = of_match_ptr(hisi_i2c_dts_ids),
 	},
 };
 module_platform_driver(hisi_i2c_driver);
-- 
2.31.GIT