diff options
| author | Prashant Malani <pmalani@chromium.org> | 2023-05-08 18:34:27 +0000 |
|---|---|---|
| committer | Prashant Malani <pmalani@chromium.org> | 2023-05-11 21:17:53 +0000 |
| commit | c9f9c6c875d14a107dabcf4579fcab95ed30af31 (patch) | |
| tree | 4423be6e3021d6805d91cf065b695e5065fd5dac /drivers/platform/chrome | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
| download | lwn-c9f9c6c875d14a107dabcf4579fcab95ed30af31.tar.gz lwn-c9f9c6c875d14a107dabcf4579fcab95ed30af31.zip | |
platform/chrome: cros_typec_switch: Add Pin D support
The ChromeOS EC's mux interface allows us to specify whether the port
should be configured for Pin Assignment D in DisplayPort alternate mode
(i.e 2 lanes USB + 2 lanes DP). Update the function that determines mux
state to account for Pin Assignment D and return the appropriate mux
setting.
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230508183428.1893357-1-pmalani@chromium.org
Diffstat (limited to 'drivers/platform/chrome')
| -rw-r--r-- | drivers/platform/chrome/cros_typec_switch.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/platform/chrome/cros_typec_switch.c b/drivers/platform/chrome/cros_typec_switch.c index 752720483753..0eefdcf14d63 100644 --- a/drivers/platform/chrome/cros_typec_switch.c +++ b/drivers/platform/chrome/cros_typec_switch.c @@ -51,13 +51,18 @@ static int cros_typec_cmd_mux_set(struct cros_typec_switch_data *sdata, int port static int cros_typec_get_mux_state(unsigned long mode, struct typec_altmode *alt) { int ret = -EOPNOTSUPP; + u8 pin_assign; - if (mode == TYPEC_STATE_SAFE) + if (mode == TYPEC_STATE_SAFE) { ret = USB_PD_MUX_SAFE_MODE; - else if (mode == TYPEC_STATE_USB) + } else if (mode == TYPEC_STATE_USB) { ret = USB_PD_MUX_USB_ENABLED; - else if (alt && alt->svid == USB_TYPEC_DP_SID) + } else if (alt && alt->svid == USB_TYPEC_DP_SID) { ret = USB_PD_MUX_DP_ENABLED; + pin_assign = mode - TYPEC_STATE_MODAL; + if (pin_assign & DP_PIN_ASSIGN_D) + ret |= USB_PD_MUX_USB_ENABLED; + } return ret; } |