soc/amd/common/block/gpio: add API for gpio override table
This function adds support for gpio_configure_pads_with_override which: 1. Takes as input two GPIO tables -- base config table and override config table 2. Configures each pad in base config by first checking if there is a config available for the pad in override config table. If yes, then uses the one from override config table. Else, uses the base config to configure the pad. BUG=b:153456574 TEST=Build and boot dalboz BRANCH=none Signed-off-by: peichao.wang <peichao.wang@bitland.corp-partner.google.com> Change-Id: I07bfe82827d1f7aea9fcc96574d6deab9e91d503 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2153423 Reviewed-by: Furquan Shaikh <furquan@chromium.org> Commit-Queue: Furquan Shaikh <furquan@chromium.org> Tested-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41576 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
parent
30ce0f383f
commit
712311f56e
|
@ -294,3 +294,36 @@ int gpio_interrupt_status(gpio_t gpio)
|
|||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function checks to see if there is an override config present for the
|
||||
* provided pad_config. If no override config is present, then the input config
|
||||
* is returned. Else, it returns the override config.
|
||||
*/
|
||||
static const struct soc_amd_gpio *gpio_get_config(const struct soc_amd_gpio *c,
|
||||
const struct soc_amd_gpio *override_cfg_table,
|
||||
size_t num)
|
||||
{
|
||||
size_t i;
|
||||
if (override_cfg_table == NULL)
|
||||
return c;
|
||||
for (i = 0; i < num; i++) {
|
||||
if (c->gpio == override_cfg_table[i].gpio)
|
||||
return override_cfg_table + i;
|
||||
}
|
||||
return c;
|
||||
}
|
||||
void gpio_configure_pads_with_override(const struct soc_amd_gpio *base_cfg,
|
||||
size_t base_num_pads,
|
||||
const struct soc_amd_gpio *override_cfg,
|
||||
size_t override_num_pads)
|
||||
{
|
||||
size_t i;
|
||||
const struct soc_amd_gpio *c;
|
||||
|
||||
for (i = 0; i < base_num_pads; i++) {
|
||||
c = gpio_get_config(base_cfg + i, override_cfg,
|
||||
override_num_pads);
|
||||
program_gpios(c, 1);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -276,6 +276,21 @@ enum {
|
|||
|
||||
typedef uint32_t gpio_t;
|
||||
|
||||
/*
|
||||
* gpio_configure_pads_with_override accepts as input two GPIO tables:
|
||||
* 1. Base config
|
||||
* 2. Override config
|
||||
*
|
||||
* This function configures raw pads in base config and applies override in
|
||||
* override config if any. Thus, for every GPIO_x in base config, this function
|
||||
* looks up the GPIO in override config and if it is present there, then applies
|
||||
* the configuration from override config.
|
||||
*/
|
||||
void gpio_configure_pads_with_override(const struct soc_amd_gpio *base_cfg,
|
||||
size_t base_num_pads,
|
||||
const struct soc_amd_gpio *override_cfg,
|
||||
size_t override_num_pads);
|
||||
|
||||
/* Get the address of the control register of a particular pin */
|
||||
uintptr_t gpio_get_address(gpio_t gpio_num);
|
||||
|
||||
|
|
Loading…
Reference in New Issue