diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-03-18 15:03:21 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-24 08:26:32 +0100 |
| commit | 6b3bc8286529a78fa9befa329900f847ae02cc0c (patch) | |
| tree | 811730b4268861a8e45300da600f3051deb4ec9b /drivers/pps | |
| parent | pps: clients: gpio: Use struct device pointer directly (diff) | |
| download | linux-dev-6b3bc8286529a78fa9befa329900f847ae02cc0c.tar.xz linux-dev-6b3bc8286529a78fa9befa329900f847ae02cc0c.zip | |
pps: clients: gpio: Rearrange optional stuff in pps_gpio_setup()
Rearrange optional stuff in pps_gpio_setup() so it will go after mandatory one
and with reduced indentation. This will increase readability of the sources.
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210318130321.24227-7-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pps')
| -rw-r--r-- | drivers/pps/clients/pps-gpio.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c index b097da5a659a..35799e6401c9 100644 --- a/drivers/pps/clients/pps-gpio.c +++ b/drivers/pps/clients/pps-gpio.c @@ -110,28 +110,31 @@ static int pps_gpio_setup(struct device *dev) return dev_err_probe(dev, PTR_ERR(data->gpio_pin), "failed to request PPS GPIO\n"); + data->assert_falling_edge = + device_property_read_bool(dev, "assert-falling-edge"); + data->echo_pin = devm_gpiod_get_optional(dev, "echo", GPIOD_OUT_LOW); if (IS_ERR(data->echo_pin)) return dev_err_probe(dev, PTR_ERR(data->echo_pin), "failed to request ECHO GPIO\n"); - if (data->echo_pin) { - ret = device_property_read_u32(dev, "echo-active-ms", &value); - if (ret) { - dev_err(dev, "failed to get echo-active-ms from FW\n"); - return ret; - } - data->echo_active_ms = value; - /* sanity check on echo_active_ms */ - if (!data->echo_active_ms || data->echo_active_ms > 999) { - dev_err(dev, "echo-active-ms: %u - bad value from FW\n", - data->echo_active_ms); - return -EINVAL; - } + if (!data->echo_pin) + return 0; + + ret = device_property_read_u32(dev, "echo-active-ms", &value); + if (ret) { + dev_err(dev, "failed to get echo-active-ms from FW\n"); + return ret; } - data->assert_falling_edge = - device_property_read_bool(dev, "assert-falling-edge"); + /* sanity check on echo_active_ms */ + if (!value || value > 999) { + dev_err(dev, "echo-active-ms: %u - bad value from FW\n", value); + return -EINVAL; + } + + data->echo_active_ms = value; + return 0; } |