From e6a5f608e197b9b31eb30b84bf3359123c1e58ac Mon Sep 17 00:00:00 2001 From: Vaibhav Shankar Date: Mon, 29 Aug 2016 14:03:38 -0700 Subject: 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 Reviewed-on: https://review.coreboot.org/16349 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/apollolake/gpio.c | 10 ++++++++++ src/soc/intel/apollolake/include/soc/gpio.h | 2 ++ src/soc/intel/apollolake/include/soc/iosf.h | 13 ++++++++----- 3 files changed, 20 insertions(+), 5 deletions(-) (limited to 'src') 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_ */ -- cgit v1.2.3