diff mbox series

iio: magnetometer: ak8975: Convert enum->pointer for data in the match tables

Message ID 20230816184015.12420-1-biju.das.jz@bp.renesas.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series iio: magnetometer: ak8975: Convert enum->pointer for data in the match tables | expand

Commit Message

Biju Das Aug. 16, 2023, 6:40 p.m. UTC
Convert enum->pointer for data in the match tables to simplify the probe()
by replacing device_get_match_data() and i2c_client_get_device_id by
i2c_get_match_data() as we have similar I2C, ACPI and DT matching table.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
Note:
 * This patch is only compile tested.
---
 drivers/iio/magnetometer/ak8975.c | 75 +++++++++++++------------------
 1 file changed, 30 insertions(+), 45 deletions(-)

Comments

Andy Shevchenko Aug. 17, 2023, 10:26 a.m. UTC | #1
On Wed, Aug 16, 2023 at 07:40:15PM +0100, Biju Das wrote:
> Convert enum->pointer for data in the match tables to simplify the probe()
> by replacing device_get_match_data() and i2c_client_get_device_id by
> i2c_get_match_data() as we have similar I2C, ACPI and DT matching table.

...

>  static const struct acpi_device_id ak_acpi_match[] = {
> +	{"AK8975", (kernel_ulong_t)&ak_def_array[AK8975] },
> +	{"AK8963", (kernel_ulong_t)&ak_def_array[AK8963] },
> +	{"INVN6500", (kernel_ulong_t)&ak_def_array[AK8963] },
> +	{"AK009911", (kernel_ulong_t)&ak_def_array[AK09911] },
> +	{"AK09911", (kernel_ulong_t)&ak_def_array[AK09911] },
> +	{"AKM9911", (kernel_ulong_t)&ak_def_array[AK09911] },
> +	{"AK09912", (kernel_ulong_t)&ak_def_array[AK09912] },

Please, sort them by HID. ACPI has no issues (as I learnt about OF) with
the ordering of IDs.

>  	{ }
>  };

...

> -	{"AK8963", AK8963},

> +	{"AK8963", (kernel_ulong_t)&ak_def_array[AK8963] },

Seems the wrong ID to begin with.

I would suggest to drop it in a separate patch.

...

>  static const struct of_device_id ak8975_of_match[] = {
> +	{ .compatible = "asahi-kasei,ak8975", .data = &ak_def_array[AK8975] },
> +	{ .compatible = "ak8975", .data = &ak_def_array[AK8975] },
> +	{ .compatible = "asahi-kasei,ak8963", .data = &ak_def_array[AK8963] },
> +	{ .compatible = "ak8963", .data = &ak_def_array[AK8963] },
> +	{ .compatible = "asahi-kasei,ak09911", .data = &ak_def_array[AK09911] },
> +	{ .compatible = "ak09911", .data = &ak_def_array[AK09911] },
> +	{ .compatible = "asahi-kasei,ak09912", .data = &ak_def_array[AK09912] },
> +	{ .compatible = "ak09912", .data = &ak_def_array[AK09912] },
> +	{ .compatible = "asahi-kasei,ak09916", .data = &ak_def_array[AK09916] },
> +	{ .compatible = "ak09916", .data = &ak_def_array[AK09916] },

Maybe the asashi being grouped it won't regress...

	{ .compatible = "asahi-kasei,ak8975", .data = &ak_def_array[AK8975] },
	{ .compatible = "asahi-kasei,ak8963", .data = &ak_def_array[AK8963] },
	{ .compatible = "asahi-kasei,ak09911", .data = &ak_def_array[AK09911] },
	{ .compatible = "asahi-kasei,ak09912", .data = &ak_def_array[AK09912] },
	{ .compatible = "asahi-kasei,ak09916", .data = &ak_def_array[AK09916] },
	{ .compatible = "ak8975", .data = &ak_def_array[AK8975] },
	{ .compatible = "ak8963", .data = &ak_def_array[AK8963] },
	{ .compatible = "ak09911", .data = &ak_def_array[AK09911] },
	{ .compatible = "ak09912", .data = &ak_def_array[AK09912] },
	{ .compatible = "ak09916", .data = &ak_def_array[AK09916] },

>  	{}
>  };
diff mbox series

Patch

diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index eb706d0bf70b..104798549de1 100644
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -813,13 +813,13 @@  static const struct iio_info ak8975_info = {
 };
 
 static const struct acpi_device_id ak_acpi_match[] = {
-	{"AK8975", AK8975},
-	{"AK8963", AK8963},
-	{"INVN6500", AK8963},
-	{"AK009911", AK09911},
-	{"AK09911", AK09911},
-	{"AKM9911", AK09911},
-	{"AK09912", AK09912},
+	{"AK8975", (kernel_ulong_t)&ak_def_array[AK8975] },
+	{"AK8963", (kernel_ulong_t)&ak_def_array[AK8963] },
+	{"INVN6500", (kernel_ulong_t)&ak_def_array[AK8963] },
+	{"AK009911", (kernel_ulong_t)&ak_def_array[AK09911] },
+	{"AK09911", (kernel_ulong_t)&ak_def_array[AK09911] },
+	{"AKM9911", (kernel_ulong_t)&ak_def_array[AK09911] },
+	{"AK09912", (kernel_ulong_t)&ak_def_array[AK09912] },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, ak_acpi_match);
@@ -883,10 +883,7 @@  static int ak8975_probe(struct i2c_client *client)
 	struct iio_dev *indio_dev;
 	struct gpio_desc *eoc_gpiod;
 	struct gpio_desc *reset_gpiod;
-	const void *match;
-	unsigned int i;
 	int err;
-	enum asahi_compass_chipset chipset;
 	const char *name = NULL;
 
 	/*
@@ -928,27 +925,15 @@  static int ak8975_probe(struct i2c_client *client)
 		return err;
 
 	/* id will be NULL when enumerated via ACPI */
-	match = device_get_match_data(&client->dev);
-	if (match) {
-		chipset = (uintptr_t)match;
-		name = dev_name(&client->dev);
-	} else if (id) {
-		chipset = (enum asahi_compass_chipset)(id->driver_data);
-		name = id->name;
-	} else
-		return -ENOSYS;
-
-	for (i = 0; i < ARRAY_SIZE(ak_def_array); i++)
-		if (ak_def_array[i].type == chipset)
-			break;
-
-	if (i == ARRAY_SIZE(ak_def_array)) {
-		dev_err(&client->dev, "AKM device type unsupported: %d\n",
-			chipset);
+	data->def = i2c_get_match_data(client);
+	if (!data->def)
 		return -ENODEV;
-	}
 
-	data->def = &ak_def_array[i];
+	/* If enumerated via firmware node, fix the ABI */
+	if (dev_fwnode(&client->dev))
+		name = dev_name(&client->dev);
+	else
+		name = id->name;
 
 	/* Fetch the regulators */
 	data->vdd = devm_regulator_get(&client->dev, "vdd");
@@ -1077,28 +1062,28 @@  static DEFINE_RUNTIME_DEV_PM_OPS(ak8975_dev_pm_ops, ak8975_runtime_suspend,
 				 ak8975_runtime_resume, NULL);
 
 static const struct i2c_device_id ak8975_id[] = {
-	{"ak8975", AK8975},
-	{"ak8963", AK8963},
-	{"AK8963", AK8963},
-	{"ak09911", AK09911},
-	{"ak09912", AK09912},
-	{"ak09916", AK09916},
+	{"ak8975", (kernel_ulong_t)&ak_def_array[AK8975] },
+	{"ak8963", (kernel_ulong_t)&ak_def_array[AK8963] },
+	{"AK8963", (kernel_ulong_t)&ak_def_array[AK8963] },
+	{"ak09911", (kernel_ulong_t)&ak_def_array[AK09911] },
+	{"ak09912", (kernel_ulong_t)&ak_def_array[AK09912] },
+	{"ak09916", (kernel_ulong_t)&ak_def_array[AK09916] },
 	{}
 };
 
 MODULE_DEVICE_TABLE(i2c, ak8975_id);
 
 static const struct of_device_id ak8975_of_match[] = {
-	{ .compatible = "asahi-kasei,ak8975", },
-	{ .compatible = "ak8975", },
-	{ .compatible = "asahi-kasei,ak8963", },
-	{ .compatible = "ak8963", },
-	{ .compatible = "asahi-kasei,ak09911", },
-	{ .compatible = "ak09911", },
-	{ .compatible = "asahi-kasei,ak09912", },
-	{ .compatible = "ak09912", },
-	{ .compatible = "asahi-kasei,ak09916", },
-	{ .compatible = "ak09916", },
+	{ .compatible = "asahi-kasei,ak8975", .data = &ak_def_array[AK8975] },
+	{ .compatible = "ak8975", .data = &ak_def_array[AK8975] },
+	{ .compatible = "asahi-kasei,ak8963", .data = &ak_def_array[AK8963] },
+	{ .compatible = "ak8963", .data = &ak_def_array[AK8963] },
+	{ .compatible = "asahi-kasei,ak09911", .data = &ak_def_array[AK09911] },
+	{ .compatible = "ak09911", .data = &ak_def_array[AK09911] },
+	{ .compatible = "asahi-kasei,ak09912", .data = &ak_def_array[AK09912] },
+	{ .compatible = "ak09912", .data = &ak_def_array[AK09912] },
+	{ .compatible = "asahi-kasei,ak09916", .data = &ak_def_array[AK09916] },
+	{ .compatible = "ak09916", .data = &ak_def_array[AK09916] },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ak8975_of_match);