diff options
| author | Scott Collyer <scollyer@google.com> | 2021-06-10 12:41:45 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-06-16 05:30:06 +0000 |
| commit | 4e5339a70b8109969aec6b9352ae81918fca62b7 (patch) | |
| tree | 83572ed0c7d5a16f202944da0219f2d50736f710 /driver/tcpm/ps8xxx.h | |
| parent | 1d1bb1f716e62d33fb06fcb6fd86c66c26792703 (diff) | |
| download | chrome-ec-4e5339a70b8109969aec6b9352ae81918fca62b7.tar.gz | |
ps8805: Add driver method to set/get GPIO signals
The PS8805 has 3 GPIO signals which can be controlled by the EC with
I2C register accesses. This CL adds functions to both set and get a
one of the 3 PS8805 GPIO signals.
BUG=b:159330563
BRANCH=quiche
TEST=verified on gingerbread that VBUS control is functioning.
Signed-off-by: Scott Collyer <scollyer@google.com>
Change-Id: I1ef688e713ea84d2b0c6a6c23385fe6afb4f96b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2953868
Commit-Queue: Scott Collyer <scollyer@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'driver/tcpm/ps8xxx.h')
| -rw-r--r-- | driver/tcpm/ps8xxx.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/driver/tcpm/ps8xxx.h b/driver/tcpm/ps8xxx.h index 1f3d2d9b88..514579ecca 100644 --- a/driver/tcpm/ps8xxx.h +++ b/driver/tcpm/ps8xxx.h @@ -58,4 +58,42 @@ /* Vendor defined registers */ #define PS8815_P1_REG_HW_REVISION 0xF0 +/* + * PS8805 GPIO control register. Note the device I2C address of 0x1A is + * independent of the ADDR pin on the chip, and not the same address being used + * for TCPCI functions. + */ +#define PS8805_VENDOR_DEFINED_I2C_ADDR 0x1A +#define PS8805_REG_GPIO_CONTROL 0x21 +#define PS8805_REG_GPIO_0 BIT(7) +#define PS8805_REG_GPIO_1 BIT(5) +#define PS8805_REG_GPIO_2 BIT(6) + +enum ps8805_gpio { + PS8805_GPIO_0, + PS8805_GPIO_1, + PS8805_GPIO_2, + PS8805_GPIO_NUM, +}; + +/** + * Set PS8805 gpio signal to desired level + * + * @param port: The Type-C port number. + * @param signal PS8805 gpio number (0, 1, or 2) + * @param level desired level + * @return EC_SUCCESS if I2C accesses are successful + */ +int ps8805_gpio_set_level(int port, enum ps8805_gpio signal, int level); + +/** + * Get PS8805 gpio signal value + * + * @param port: The Type-C port number. + * @param signal PS8805 gpio number (0, 1, or 2) + * @param pointer location to store gpio level + * @return EC_SUCCESS if I2C accesses are successful + */ +int ps8805_gpio_get_level(int port, enum ps8805_gpio signal, int *level); + #endif /* defined(__CROS_EC_USB_PD_TCPM_PS8XXX_H) */ |