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i2c: pca-platform: unconditionally use devm_gpiod_get_optional 

Allow for the reset-gpios property to be defined in the device tree
or via a GPIO lookup table.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Chris Packham 2017-07-05 22:13:56 +12:00 committed by Wolfram Sang
parent df0d32348a
commit 0678326175
1 changed files with 4 additions and 17 deletions
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21
drivers/i2c/busses/i2c-pca-platform.c
View File

@ -173,33 +173,20 @@ static int i2c_pca_pf_probe(struct platform_device *pdev)
i2c->adap.dev.parent = &pdev->dev;
i2c->adap.dev.of_node = np;
i2c->gpio = devm_gpiod_get_optional(&pdev->dev, "reset-gpios", GPIOD_OUT_LOW);
if (IS_ERR(i2c->gpio))
return PTR_ERR(i2c->gpio);
if (platform_data) {
i2c->adap.timeout = platform_data->timeout;
i2c->algo_data.i2c_clock = platform_data->i2c_clock_speed;
if (gpio_is_valid(platform_data->gpio)) {
ret = devm_gpio_request_one(&pdev->dev,
platform_data->gpio,
GPIOF_ACTIVE_LOW,
i2c->adap.name);
if (ret == 0) {
i2c->gpio = gpio_to_desc(platform_data->gpio);
gpiod_direction_output(i2c->gpio, 0);
} else {
dev_warn(&pdev->dev, "Registering gpio failed!\n");
i2c->gpio = NULL;
}
}
} else if (np) {
i2c->adap.timeout = HZ;
i2c->gpio = devm_gpiod_get_optional(&pdev->dev, "reset-gpios", GPIOD_OUT_LOW);
if (IS_ERR(i2c->gpio))
return PTR_ERR(i2c->gpio);
of_property_read_u32_index(np, "clock-frequency", 0,
&i2c->algo_data.i2c_clock);
} else {
i2c->adap.timeout = HZ;
i2c->algo_data.i2c_clock = 59000;
i2c->gpio = NULL;
}
i2c->algo_data.data = i2c;