Re: [PATCH v3 4/5] gpio: gpio-aspeed-sgpio: Add set_config function
From: Andy Shevchenko <hidden>
Date: 2021-06-03 11:08:55
Also in:
linux-aspeed, linux-devicetree, linux-gpio, lkml
On Thu, Jun 3, 2021 at 1:20 PM Steven Lee [off-list ref] wrote:
AST SoC supports *retain pin state* function when wdt reset. The patch adds set_config function for handling sgpio reset tolerance register.
...
+static int aspeed_sgpio_set_config(struct gpio_chip *chip, unsigned int offset,
+ unsigned long config)
+{
+ unsigned long param = pinconf_to_config_param(config);
+ u32 arg = pinconf_to_config_argument(config);
+
+ if (param == PIN_CONFIG_PERSIST_STATE)
+ return aspeed_sgpio_reset_tolerance(chip, offset, arg);+ else
Redundant.
+ return -EOPNOTSUPP;
IIRC we are using ENOTSUPP internally in the kernel. YEs, checkpatch warning may be ignored.
+}
-- With Best Regards, Andy Shevchenko _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel