diff options
| author | Shaunak Saha <shaunak.saha@intel.com> | 2016-07-24 20:50:12 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-08-10 21:10:59 +0200 |
| commit | 09115a92f6ac6123a6f1ed435c05fe60dc01d58c (patch) | |
| tree | 9c6b16087c872cb140c5b447c33ebae3a78e2e23 /src/soc/intel/apollolake/include/soc/gpio.h | |
| parent | a46ee4d34d6b7ce7d47882779c7fb36270ccbda1 (diff) | |
| download | coreboot-09115a92f6ac6123a6f1ed435c05fe60dc01d58c.tar.xz | |
soc/apollolake: add GPIO SMI support
GPIOs which trigger SMIs set the GPIO_SMI_STS status bits in SMI_STS
register. This patch also sets the SMI_EN bit in enable register for
each community based on GPIOROUTSMI bit in gpio pad. When SMI on a
gpio happens status needs to be gathered on gpio number which is done
by reading the GPI_SMI_STS and GPI_SMI_EN registers.
BUG=chrome-os-partner:54977
TEST=When system is in firmware mode executing the command
lidclose from ec console shuts down the system.
Change-Id: Id89a526106d1989c2bd3416ab81913e6cf743d17
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/15833
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/soc/intel/apollolake/include/soc/gpio.h')
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/gpio.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/include/soc/gpio.h b/src/soc/intel/apollolake/include/soc/gpio.h index 8ef74bb70a..00894448c8 100644 --- a/src/soc/intel/apollolake/include/soc/gpio.h +++ b/src/soc/intel/apollolake/include/soc/gpio.h @@ -25,6 +25,25 @@ typedef uint32_t gpio_t; +/* + * Structure to represent GPI status for GPE and SMI. Use helper + * functions for interrogating particular GPIs. Here the number of + * array elements is total number of groups that can be present in all + * the communities. + */ +struct gpi_status { + uint32_t grp[NUM_GPI_STATUS_REGS]; +}; + +/* + * Clear GPI SMI status and fill in the structure representing enabled + * and set status. + */ +void gpi_clear_get_smi_status(struct gpi_status *sts); + +/* Return 1 if gpio is set in the gpi_status struct. Otherwise 0. */ +int gpi_status_get(const struct gpi_status *sts, gpio_t gpi); + #define PAD_FUNC(value) PAD_CFG0_MODE_##value #define PAD_RESET(value) PAD_CFG0_RESET_##value #define PAD_PULL(value) PAD_CFG1_PULL_##value |