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authorVaibhav Shankar <vaibhav.shankar@intel.com>2016-08-29 14:03:38 -0700
committerMartin Roth <martinroth@google.com>2016-09-09 23:51:01 +0200
commite6a5f608e197b9b31eb30b84bf3359123c1e58ac (patch)
tree8e8ca527f33d874d4b21da7b95cd4ff9eb103ace /src/soc/intel/apollolake
parent6e4204a0d196615ebb19d6f03f2eff2307bd6380 (diff)
soc/intel/apollolake: Add functions to calculate GPIO address
Provide iosf and GPIO functions for GPIO address calculation. BUG=chrome-os-partner:55877 Change-Id: I6eaa1fcecf5970b365e3418541c75b9866959f7e Signed-off-by: Vaibhav Shankar <vaibhav.shankar@intel.com> Reviewed-on: https://review.coreboot.org/16349 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/intel/apollolake')
-rw-r--r--src/soc/intel/apollolake/gpio.c10
-rw-r--r--src/soc/intel/apollolake/include/soc/gpio.h2
-rw-r--r--src/soc/intel/apollolake/include/soc/iosf.h13
3 files changed, 20 insertions, 5 deletions
diff --git a/src/soc/intel/apollolake/gpio.c b/src/soc/intel/apollolake/gpio.c
index e56f147b5a..4731d56f85 100644
--- a/src/soc/intel/apollolake/gpio.c
+++ b/src/soc/intel/apollolake/gpio.c
@@ -177,6 +177,16 @@ void gpio_configure_pads(const struct pad_config *cfg, size_t num_pads)
gpio_configure_pad(cfg + i);
}
+void * gpio_dwx_address(const uint16_t pad)
+{
+ /* Calculate Address of DW0 register for given GPIO
+ * pad - GPIO number
+ * returns - address of GPIO
+ */
+ const struct pad_community *comm = gpio_get_community(pad);
+ return iosf_address(comm->port, PAD_CFG_OFFSET(pad - comm->first_pad));
+}
+
void gpio_input_pulldown(gpio_t gpio)
{
struct pad_config cfg = PAD_CFG_GPI(gpio, DN_20K, DEEP);
diff --git a/src/soc/intel/apollolake/include/soc/gpio.h b/src/soc/intel/apollolake/include/soc/gpio.h
index 00894448c8..473044aa59 100644
--- a/src/soc/intel/apollolake/include/soc/gpio.h
+++ b/src/soc/intel/apollolake/include/soc/gpio.h
@@ -160,6 +160,8 @@ struct pad_config {
void gpio_configure_pad(const struct pad_config *cfg);
void gpio_configure_pads(const struct pad_config *cfg, size_t num_pads);
+/* Calculate GPIO DW0 address */
+void * gpio_dwx_address(const uint16_t pad);
/*
* Set the GPIO groups for the GPE blocks. The values from PMC register GPE_CFG
* are passed which is then mapped to proper groups for MISCCFG. This basically
diff --git a/src/soc/intel/apollolake/include/soc/iosf.h b/src/soc/intel/apollolake/include/soc/iosf.h
index ae3e8ec88a..f82c967c49 100644
--- a/src/soc/intel/apollolake/include/soc/iosf.h
+++ b/src/soc/intel/apollolake/include/soc/iosf.h
@@ -24,16 +24,19 @@
#define RTC_CONFIG 0x3400
#define RTC_CONFIG_UCMOS_ENABLE (1 << 2)
+static inline void * iosf_address(uint16_t port, uint16_t reg)
+{
+ uintptr_t addr = (CONFIG_IOSF_BASE_ADDRESS | (port << 16) | (reg & ~3));
+ return (void *)addr;
+}
+
inline static void iosf_write(uint16_t port, uint16_t reg, uint32_t val)
{
- uintptr_t base = CONFIG_IOSF_BASE_ADDRESS | (port << 16) | (reg & ~3);
- write32((void *)base, val);
+ write32(iosf_address(port, reg), val);
}
inline static uint32_t iosf_read(uint16_t port, uint16_t reg)
{
- uintptr_t base = CONFIG_IOSF_BASE_ADDRESS | (port << 16) | (reg & ~3);
- return read32((void *)base);
+ return read32(iosf_address(port, reg));
}
-
#endif /* _SOC_APOLLOLAKE_IOSF_H_ */