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Subject[PATCH 12/12] i2c: gpio: flag atomic capability if possible
Date
If switching GPIOs does not sleep, then we can support atomic transfers.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/i2c/busses/i2c-gpio.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
index bba5c4627de3..9684a0ac2a6d 100644
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -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;
--
2.11.0
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