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-rw-r--r--src/soc/intel/apollolake/gpio.c48
-rw-r--r--src/soc/intel/apollolake/include/soc/gpio.h2
-rw-r--r--src/soc/intel/apollolake/include/soc/gpio_defs.h2
3 files changed, 52 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/gpio.c b/src/soc/intel/apollolake/gpio.c
index 3a7be07d0d..06db8c965a 100644
--- a/src/soc/intel/apollolake/gpio.c
+++ b/src/soc/intel/apollolake/gpio.c
@@ -16,6 +16,7 @@
*/
#include <assert.h>
+#include <gpio.h>
#include <soc/gpio.h>
#include <soc/iosf.h>
@@ -66,3 +67,50 @@ void gpio_configure_pads(const struct pad_config *cfg, size_t num_pads)
for (i = 0; i < num_pads; i++)
gpio_configure_pad(cfg + i);
}
+
+void gpio_input_pulldown(gpio_t gpio)
+{
+ struct pad_config cfg = PAD_CFG_GPI(gpio, DN_5K, DEEP);
+ gpio_configure_pad(&cfg);
+}
+
+void gpio_input_pullup(gpio_t gpio)
+{
+ struct pad_config cfg = PAD_CFG_GPI(gpio, UP_5K, DEEP);
+ gpio_configure_pad(&cfg);
+}
+
+void gpio_input(gpio_t gpio)
+{
+ struct pad_config cfg = PAD_CFG_GPI(gpio, NONE, DEEP);
+ gpio_configure_pad(&cfg);
+}
+
+void gpio_output(gpio_t gpio, int value)
+{
+ struct pad_config cfg = PAD_CFG_GPO(gpio, value, DEEP);
+ gpio_configure_pad(&cfg);
+}
+
+int gpio_get(gpio_t gpio_num)
+{
+ uint32_t reg;
+ const struct pad_community *comm = gpio_get_community(gpio_num);
+ uint16_t config_offset = PAD_CFG_OFFSET(gpio_num - comm->first_pad);
+
+ reg = iosf_read(comm->port, config_offset);
+
+ return !!(reg & PAD_CFG0_RX_STATE);
+}
+
+void gpio_set(gpio_t gpio_num, int value)
+{
+ uint32_t reg;
+ const struct pad_community *comm = gpio_get_community(gpio_num);
+ uint16_t config_offset = PAD_CFG_OFFSET(gpio_num - comm->first_pad);
+
+ reg = iosf_read(comm->port, config_offset);
+ reg &= ~PAD_CFG0_TX_STATE;
+ reg |= !!value & PAD_CFG0_TX_STATE;
+ iosf_write(comm->port, config_offset, reg);
+}
diff --git a/src/soc/intel/apollolake/include/soc/gpio.h b/src/soc/intel/apollolake/include/soc/gpio.h
index 7a254752f4..4d9973c21c 100644
--- a/src/soc/intel/apollolake/include/soc/gpio.h
+++ b/src/soc/intel/apollolake/include/soc/gpio.h
@@ -21,6 +21,8 @@
#include <types.h>
#include <soc/gpio_defs.h>
+typedef uint32_t gpio_t;
+
#define PAD_FUNC(value) PAD_CFG0_MODE_##value
#define PAD_RESET(value) PAD_CFG0_RESET_##value
#define PAD_PULL(value) PAD_CFG1_PULL_##value
diff --git a/src/soc/intel/apollolake/include/soc/gpio_defs.h b/src/soc/intel/apollolake/include/soc/gpio_defs.h
index 1d7e74a99c..30c4bdb272 100644
--- a/src/soc/intel/apollolake/include/soc/gpio_defs.h
+++ b/src/soc/intel/apollolake/include/soc/gpio_defs.h
@@ -23,6 +23,8 @@
#ifndef _SOC_APOLLOLAKE_GPIO_DEFS_H_
#define _SOC_APOLLOLAKE_GPIO_DEFS_H_
+#define PAD_CFG0_TX_STATE (1 << 0)
+#define PAD_CFG0_RX_STATE (1 << 1)
#define PAD_CFG0_TX_DISABLE (1 << 8)
#define PAD_CFG0_RX_DISABLE (1 << 9)
#define PAD_CFG0_MODE_MASK (7 << 10)