diff options
| author | Julius Werner <jwerner@chromium.org> | 2018-08-02 11:45:07 -0700 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2018-08-03 18:10:02 +0000 |
| commit | 0a0340e42e461a6e34a2e99304792f0ecac07bcb (patch) | |
| tree | d49be7f0f37c051b6aed0b80e1664ee5e0b7f80f /src/lib | |
| parent | 62431a72246977a3f95257d6e791aedd020523a9 (diff) | |
gpio: Change gpio_baseX_value() function return types to unsigned
This patch changes the return type of gpio_base2_value() and related
functions from int to uint32_t. This makes more sense now that
board_id() and related functions (which are the primary use case) also
return that type. It's unlikely that we'll ever read a strapping of 32
GPIOs in a row, but if we did, we'd probably want to treat it as
unsigned.
Change-Id: I8fb7e3a7c76cb886aed40d0ada1f545180e43117
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/27809
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/gpio.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/src/lib/gpio.c b/src/lib/gpio.c index b52d7b0c5f..0656dfb870 100644 --- a/src/lib/gpio.c +++ b/src/lib/gpio.c @@ -20,9 +20,10 @@ #include <delay.h> #include <gpio.h> -static int _gpio_base2_value(const gpio_t gpio[], int num_gpio) +static uint32_t _gpio_base2_value(const gpio_t gpio[], int num_gpio) { - int i, result = 0; + uint32_t result = 0; + int i; /* Wait until signals become stable */ udelay(10); @@ -33,7 +34,7 @@ static int _gpio_base2_value(const gpio_t gpio[], int num_gpio) return result; } -int gpio_base2_value(const gpio_t gpio[], int num_gpio) +uint32_t gpio_base2_value(const gpio_t gpio[], int num_gpio) { int i; @@ -43,7 +44,7 @@ int gpio_base2_value(const gpio_t gpio[], int num_gpio) return _gpio_base2_value(gpio, num_gpio); } -int gpio_pulldown_base2_value(const gpio_t gpio[], int num_gpio) +uint32_t gpio_pulldown_base2_value(const gpio_t gpio[], int num_gpio) { int i; @@ -53,7 +54,7 @@ int gpio_pulldown_base2_value(const gpio_t gpio[], int num_gpio) return _gpio_base2_value(gpio, num_gpio); } -int gpio_pullup_base2_value(const gpio_t gpio[], int num_gpio) +uint32_t gpio_pullup_base2_value(const gpio_t gpio[], int num_gpio) { int i; @@ -63,7 +64,7 @@ int gpio_pullup_base2_value(const gpio_t gpio[], int num_gpio) return _gpio_base2_value(gpio, num_gpio); } -int _gpio_base3_value(const gpio_t gpio[], int num_gpio, int binary_first) +uint32_t _gpio_base3_value(const gpio_t gpio[], int num_gpio, int binary_first) { /* * GPIOs which are tied to stronger external pull up or pull down @@ -75,11 +76,11 @@ int _gpio_base3_value(const gpio_t gpio[], int num_gpio, int binary_first) */ static const char tristate_char[] = {[0] = '0', [1] = '1', [Z] = 'Z'}; - int temp; - int index; - int result = 0; + uint32_t result = 0; int has_z = 0; int binary_below = 0; + int index; + int temp; char value[32]; assert(num_gpio <= 32); |