Implement the above two functions. The format of input parameters is "x_y", where x is the bank number and y is the pin number in that bank.
Example: => gpio i 3_13 gpio: pin 3_13 (gpio 107) value is 0
Signed-off-by: Marek Vasut marex@denx.de Cc: Detlev Zundel dzu@denx.de Cc: Mike Frysinger vapier@gentoo.org Cc: Stefano Babic sbabic@denx.de --- drivers/gpio/mxs_gpio.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/drivers/gpio/mxs_gpio.c b/drivers/gpio/mxs_gpio.c index 38dbc81..988b105 100644 --- a/drivers/gpio/mxs_gpio.c +++ b/drivers/gpio/mxs_gpio.c @@ -130,3 +130,35 @@ int gpio_free(unsigned gpio) { return 0; } + +int gpio_from_string(const char *cname) +{ + char *name = (char *)cname; + char *bank, *pin, *endp; + int b, p; + + bank = strtok(name, "_"); + if (!bank) + return -1; + + pin = strtok(NULL, "_"); + if (!pin) + return -1; + + b = simple_strtol(bank, &endp, 10); + if (*endp != '\0') + return -1; + + p = simple_strtol(pin, &endp, 10); + if (*endp != '\0') + return -1; + + return MXS_IOMUX_PAD(b, p, 0, 0, 0, 0); +} + +int gpio_to_string(int gpio, char *buf, int buflen) +{ + int ret; + ret = snprintf(buf, buflen, "%i_%i", PAD_BANK(gpio), PAD_PIN(gpio)); + return ret < buflen; +}