Commit e155e388 authored Apr 03, 2019 by Wolfram Sang Committed by Wolfram Sang Apr 16, 2019

i2c: gpio: flag atomic capability if possible



If switching GPIOs does not sleep, then we can support atomic transfers.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

parent 8927fbf4

drivers/i2c/busses/i2c-gpio.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -413,6 +413,8 @@ static int i2c_gpio_probe(struct platform_device *pdev)

		if (gpiod_cansleep(priv->sda) \|\| gpiod_cansleep(priv->scl))
		dev_warn(dev, "Slow GPIO pins might wreak havoc into I2C/SMBus bus timing");
		else
		bit_data->can_do_atomic = true;

		bit_data->setsda = i2c_gpio_setsda_val;
		bit_data->setscl = i2c_gpio_setscl_val;

Admin message