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authorMåns Rullgård <mans@mansr.com>2015-12-15 22:27:57 +0000
committerStefano Babic <sbabic@denx.de>2016-01-07 17:54:16 +0100
commit88f91d1375aaf4d21d77a2f2daa351dea9132a58 (patch)
tree773d349d3cbd8d2abea662bda72a4d026281bed7 /drivers
parentfcbe8c56743a1f8ec397a71d5a932faee920bc8a (diff)
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gpio: mxs: add name_to_gpio() function
Override the default name_to_gpio() function with one that accepts strings of the form bank:pin. If a colon is present in the provided name, it behaves like the default version. This lets the "gpio" command work with sane names rather than requiring the user to enter the bank/pin composite in decimal. Signed-off-by: Mans Rullgard <mans@mansr.com> Reviewed-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/mxs_gpio.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpio/mxs_gpio.c b/drivers/gpio/mxs_gpio.c
index da0199b..b54a10b 100644
--- a/drivers/gpio/mxs_gpio.c
+++ b/drivers/gpio/mxs_gpio.c
@@ -114,3 +114,18 @@ int gpio_free(unsigned gpio)
{
return 0;
}
+
+int name_to_gpio(const char *name)
+{
+ unsigned bank, pin;
+ char *end;
+
+ bank = simple_strtoul(name, &end, 10);
+
+ if (!*end || *end != ':')
+ return bank;
+
+ pin = simple_strtoul(end + 1, NULL, 10);
+
+ return (bank << MXS_PAD_BANK_SHIFT) | (pin << MXS_PAD_PIN_SHIFT);
+}