[PATCH next v4 1/2] i2c: hisi: Add initial device tree support

Weilong Chen
2022-09-09T07:51:29Z

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

Signed-off-by: Weilong Chen <chenweilong@huawei.com>
---
drivers/i2c/busses/Kconfig | 2 +-
drivers/i2c/busses/i2c-hisi.c | 19 ++++++++++++++++++-
2 files changed, 19 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..7a77f306d05f 100644
--- a/drivers/i2c/busses/i2c-hisi.c
+++ b/drivers/i2c/busses/i2c-hisi.c
@@ -5,6 +5,9 @@
* Copyright (c) 2021 HiSilicon Technologies Co., Ltd.
*/

+#ifdef CONFIG_ACPI
+#include <linux/acpi.h>
+#endif
#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/completion.h>
@@ -13,6 +16,9 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
+#ifdef CONFIG_OF
+#include <linux/of.h>
+#endif
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/units.h>
@@ -483,17 +489,28 @@ 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
+
+#ifdef CONFIG_OF
+static const struct of_device_id hisi_i2c_dts_ids[] = {
+ { .compatible = "hisilicon,hisi-i2c", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, hisi_i2c_dts_ids);
+#endif

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