diff options
| author | David Huang <david.huang@quanta.corp-partner.google.com> | 2020-03-24 15:21:41 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-26 11:04:46 +0000 |
| commit | a88bd6dd2ce985f15cee44e95562639a4112f283 (patch) | |
| tree | dd8f39f37585d5da510399411d445f33197930e9 /board/ezkinil/board.c | |
| parent | c266c3c4429bddc7ce54c5a389c51b941ed1e1c4 (diff) | |
| download | chrome-ec-a88bd6dd2ce985f15cee44e95562639a4112f283.tar.gz | |
Ezkinil: Add FSUSB42UMX driver
Add FSUSB42UMX support. This chip is used as SBU mux of usb
c0 port.
BUG=none
BRANCH=ezkinil
TEST=make buildall -j
Signed-off-by: David Huang <david.huang@quanta.corp-partner.google.com>
Change-Id: I566723de6b996652dc611262b609c08fe0d4b124
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2115906
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Diffstat (limited to 'board/ezkinil/board.c')
| -rw-r--r-- | board/ezkinil/board.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/board/ezkinil/board.c b/board/ezkinil/board.c index 9dbf2fbb34..7a23f5cde3 100644 --- a/board/ezkinil/board.c +++ b/board/ezkinil/board.c @@ -168,6 +168,37 @@ const struct mft_t mft_channels[] = { }; BUILD_ASSERT(ARRAY_SIZE(mft_channels) == MFT_CH_COUNT); +/* + * USB C0 port SBU mux use standalone FSUSB42UMX + * chip and it need a board specific driver. + * Overall, it will use chained mux framework. + */ +static int fsusb42umx_set_mux(const struct usb_mux *me, mux_state_t mux_state) +{ + if (mux_state & USB_PD_MUX_POLARITY_INVERTED) + ioex_set_level(IOEX_USB_C0_SBU_FLIP, 1); + else + ioex_set_level(IOEX_USB_C0_SBU_FLIP, 0); + return EC_SUCCESS; +} +/* + * .init is not necessary here because it has nothing + * to do. Primary mux will handle mux state so .get is + * not needed as well. usb_mux.c can handle the situation + * properly. + */ +const struct usb_mux_driver usbc0_sbu_mux_driver = { + .set = fsusb42umx_set_mux, +}; +/* + * Since FSUSB42UMX is not a i2c device, .i2c_port and + * .i2c_addr_flags are not required here. + */ +const struct usb_mux usbc0_sbu_mux = { + .usb_port = USBC_PORT_C0, + .driver = &usbc0_sbu_mux_driver, +}; + /***************************************************************************** * USB-C MUX/Retimer dynamic configuration */ @@ -208,7 +239,11 @@ DECLARE_HOOK(HOOK_INIT, setup_mux, HOOK_PRIO_DEFAULT); struct usb_mux usb_muxes[] = { [USBC_PORT_C0] = { - /* USB-C0 does not have a retimer/mux */ + .usb_port = USBC_PORT_C0, + .i2c_port = I2C_PORT_USB_AP_MUX, + .i2c_addr_flags = AMD_FP5_MUX_I2C_ADDR_FLAGS, + .driver = &amd_fp5_usb_mux_driver, + .next_mux = &usbc0_sbu_mux, }, [USBC_PORT_C1] = { /* Filled in dynamically at startup */ |