Re: [PATCH v2 1/3] gpio: tps65215: Add TPS65215 to platform_device_id table

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On 1/4/25 12:21 PM, Roger Quadros wrote:


On 04/01/2025 00:54, Shree Ramamoorthy wrote:
Add platform_device_id struct and use the platform_get_device_id() output
to match which PMIC device is in use. With new name options, the gpio_chip
.label field is now assigned to the platform_device name match.

Remove MODULE_ALIAS since it is now generated by MODULE_DEVICE_TABLE.

Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@xxxxxx>
---
  drivers/gpio/gpio-tps65219.c | 17 ++++++++++++-----
  1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-tps65219.c b/drivers/gpio/gpio-tps65219.c
index 526640c39a11..7e03be0c7c92 100644
--- a/drivers/gpio/gpio-tps65219.c
+++ b/drivers/gpio/gpio-tps65219.c
@@ -1,8 +1,8 @@
  // SPDX-License-Identifier: GPL-2.0
  /*
- * GPIO driver for TI TPS65219 PMICs
+ * GPIO driver for TI TPS65215/TPS65219 PMICs
   *
- * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2024 Texas Instruments Incorporated - http://www.ti.com/
   */
#include <linux/bits.h>
@@ -141,7 +141,6 @@ static int tps65219_gpio_direction_output(struct gpio_chip *gc, unsigned int off
  }
static const struct gpio_chip tps65219_template_chip = {
-	.label			= "tps65219-gpio",
  	.owner			= THIS_MODULE,
  	.get_direction		= tps65219_gpio_get_direction,
  	.direction_input	= tps65219_gpio_direction_input,
@@ -164,20 +163,28 @@ static int tps65219_gpio_probe(struct platform_device *pdev)
gpio->tps = tps;
  	gpio->gpio_chip = tps65219_template_chip;
+	gpio->gpio_chip.label = dev_name(&pdev->dev);
  	gpio->gpio_chip.parent = tps->dev;
return devm_gpiochip_add_data(&pdev->dev, &gpio->gpio_chip, gpio);
  }
+static const struct platform_device_id tps6521x_gpio_id_table[] = {
+	{ "tps65215-gpio", TPS65215 },
+	{ "tps65219-gpio", TPS65219 },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, tps6521x_gpio_id_table);
+
  static struct platform_driver tps65219_gpio_driver = {
  	.driver = {
  		.name = "tps65219-gpio",
  	},
  	.probe = tps65219_gpio_probe,
+	.id_table = tps6521x_gpio_id_table,
  };
  module_platform_driver(tps65219_gpio_driver);
-MODULE_ALIAS("platform:tps65219-gpio");

Why do you drop the MODULE_ALIAS?
You can add multiple MODULE_ALIASES if needed.


The new MODULE_DEVICE_TABLE() above causes all the needed
module aliases to be made for us automatically.

  MODULE_AUTHOR("Jonathan Cormier <jcormier@xxxxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("TPS65219 GPIO driver");
+MODULE_DESCRIPTION("TPS65215/TPS65219 GPIO driver");

"TPS6521x GPIO driver"?

I also see a product named TPS65216.
By any chance can that be also supported by this driver?


That is kinda the issue with "x" in the name, TPS65216 might
need a different driver, in which case the x here would mislead
folks into thinking this driver covers the whole family.

Andrew

  MODULE_LICENSE("GPL");





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