[PATCH 2/4] platform/chrome: cros_ec_typec: Get mux state inside configure_mux

Prashant Malani
2022-02-07T21:41:14Z

Move the function which gets current mux state inside the
cros_typec_configure_mux() function. It is better to group those
bits of functionality together, and it makes it easier to move around
cros_typec_configure_mux() later.

While we are doing this, also inline the cros_typec_get_mux_info() inside
of cros_typec_configure_mux().

Signed-off-by: Prashant Malani <pmalani@chromium.org>
---
drivers/platform/chrome/cros_ec_typec.c | 55 +++++++++++--------------
1 file changed, 23 insertions(+), 32 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index 445da4f122e7..671d3569faf6 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -513,27 +513,38 @@ static int cros_typec_enable_usb4(struct cros_typec_data *typec,
}

static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
- uint8_t mux_flags,
struct ec_response_usb_pd_control_v2 *pd_ctrl)
{
struct cros_typec_port *port = typec->ports[port_num];
+ struct ec_response_usb_pd_mux_info mux_resp;
+ struct ec_params_usb_pd_mux_info req = {
+ .port = port_num,
+ };
struct ec_params_usb_pd_mux_ack mux_ack;
enum typec_orientation orientation;
int ret = 0;

+ ret = cros_ec_command(typec->ec, 0, EC_CMD_USB_PD_MUX_INFO,
+ &req, sizeof(req), &mux_resp, sizeof(mux_resp));
+ if (ret < 0) {
+ dev_warn(typec->dev, "Failed to get mux info for port: %d, err = %d\n",
+ port_num, ret);
+ return ret;
+ }
+
/* No change needs to be made, let's exit early. */
- if (port->mux_flags == mux_flags && port->role == pd_ctrl->role)
+ if (port->mux_flags == mux_resp.flags && port->role == pd_ctrl->role)
return 0;

- port->mux_flags = mux_flags;
+ port->mux_flags = mux_resp.flags;
port->role = pd_ctrl->role;

- if (mux_flags == USB_PD_MUX_NONE) {
+ if (port->mux_flags == USB_PD_MUX_NONE) {
ret = cros_typec_usb_disconnect_state(port);
goto mux_ack;
}

- if (mux_flags & USB_PD_MUX_POLARITY_INVERTED)
+ if (port->mux_flags & USB_PD_MUX_POLARITY_INVERTED)
orientation = TYPEC_ORIENTATION_REVERSE;
else
orientation = TYPEC_ORIENTATION_NORMAL;
@@ -548,22 +559,22 @@ static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
if (ret)
return ret;

- if (mux_flags & USB_PD_MUX_USB4_ENABLED) {
+ if (port->mux_flags & USB_PD_MUX_USB4_ENABLED) {
ret = cros_typec_enable_usb4(typec, port_num, pd_ctrl);
- } else if (mux_flags & USB_PD_MUX_TBT_COMPAT_ENABLED) {
+ } else if (port->mux_flags & USB_PD_MUX_TBT_COMPAT_ENABLED) {
ret = cros_typec_enable_tbt(typec, port_num, pd_ctrl);
- } else if (mux_flags & USB_PD_MUX_DP_ENABLED) {
+ } else if (port->mux_flags & USB_PD_MUX_DP_ENABLED) {
ret = cros_typec_enable_dp(typec, port_num, pd_ctrl);
- } else if (mux_flags & USB_PD_MUX_SAFE_MODE) {
+ } else if (port->mux_flags & USB_PD_MUX_SAFE_MODE) {
ret = cros_typec_usb_safe_state(port);
- } else if (mux_flags & USB_PD_MUX_USB_ENABLED) {
+ } else if (port->mux_flags & USB_PD_MUX_USB_ENABLED) {
port->state.alt = NULL;
port->state.mode = TYPEC_STATE_USB;
ret = typec_mux_set(port->mux, &port->state);
} else {
dev_dbg(typec->dev,
"Unrecognized mode requested, mux flags: %x\n",
- mux_flags);
+ port->mux_flags);
}

mux_ack:
@@ -638,17 +649,6 @@ static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
}
}

-static int cros_typec_get_mux_info(struct cros_typec_data *typec, int port_num,
- struct ec_response_usb_pd_mux_info *resp)
-{
- struct ec_params_usb_pd_mux_info req = {
- .port = port_num,
- };
-
- return cros_ec_command(typec->ec, 0, EC_CMD_USB_PD_MUX_INFO, &req,
- sizeof(req), resp, sizeof(*resp));
-}
-
/*
* Helper function to register partner/plug altmodes.
*/
@@ -946,7 +946,6 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
{
struct ec_params_usb_pd_control req;
struct ec_response_usb_pd_control_v2 resp;
- struct ec_response_usb_pd_mux_info mux_resp;
int ret;

if (port_num < 0 || port_num >= typec->num_ports) {
@@ -982,15 +981,7 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
cros_typec_handle_status(typec, port_num);

/* Update the switches if they exist, according to requested state */
- ret = cros_typec_get_mux_info(typec, port_num, &mux_resp);
- if (ret < 0) {
- dev_warn(typec->dev,
- "Failed to get mux info for port: %d, err = %d\n",
- port_num, ret);
- return 0;
- }
-
- ret = cros_typec_configure_mux(typec, port_num, mux_resp.flags, &resp);
+ ret = cros_typec_configure_mux(typec, port_num, &resp);
if (ret)
dev_warn(typec->dev, "Configure muxes failed, err = %d\n", ret);

--
2.35.0.263.gb82422642f-goog