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usb: typec-mux: nb7vpq904m: broadcast typec state to next mux

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In the Type-C graph, the nb7vpq904m retimer is in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.

Update the nb7vpq904m retimer to get an optional type-c mux on the next
endpoint, and broadcast the received mode to it.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-4-c6f6eae479c3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Neil Armstrong
2024-06-06 15:11:16 +02:00
committed by Greg Kroah-Hartman
parent a96abf3bad
commit 90c478ee37
1 changed files with 22 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/usb/typec/mux/nb7vpq904m.c
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@@ -69,6 +69,7 @@ struct nb7vpq904m {
bool swap_data_lanes;
struct typec_switch *typec_switch;
struct typec_mux *typec_mux;
struct mutex lock; /* protect non-concurrent retimer & switch */
@@ -275,6 +276,7 @@ static int nb7vpq904m_sw_set(struct typec_switch_dev *sw, enum typec_orientation
static int nb7vpq904m_retimer_set(struct typec_retimer *retimer, struct typec_retimer_state *state)
{
struct nb7vpq904m *nb7 = typec_retimer_get_drvdata(retimer);
struct typec_mux_state mux_state;
int ret = 0;
mutex_lock(&nb7->lock);
@@ -292,7 +294,14 @@ static int nb7vpq904m_retimer_set(struct typec_retimer *retimer, struct typec_re
mutex_unlock(&nb7->lock);
return ret;
if (ret)
return ret;
mux_state.alt = state->alt;
mux_state.data = state->data;
mux_state.mode = state->mode;
return typec_mux_set(nb7->typec_mux, &mux_state);
}
static const struct regmap_config nb7_regmap = {
@@ -413,9 +422,16 @@ static int nb7vpq904m_probe(struct i2c_client *client)
return dev_err_probe(dev, PTR_ERR(nb7->typec_switch),
"failed to acquire orientation-switch\n");
nb7->typec_mux = fwnode_typec_mux_get(dev->fwnode);
if (IS_ERR(nb7->typec_mux)) {
ret = dev_err_probe(dev, PTR_ERR(nb7->typec_mux),
"Failed to acquire mode-switch\n");
goto err_switch_put;
}
ret = nb7vpq904m_parse_data_lanes_mapping(nb7);
if (ret)
goto err_switch_put;
goto err_mux_put;
ret = regulator_enable(nb7->vcc_supply);
if (ret)
@@ -458,6 +474,9 @@ static int nb7vpq904m_probe(struct i2c_client *client)
gpiod_set_value(nb7->enable_gpio, 0);
regulator_disable(nb7->vcc_supply);
err_mux_put:
typec_mux_put(nb7->typec_mux);
err_switch_put:
typec_switch_put(nb7->typec_switch);
@@ -475,6 +494,7 @@ static void nb7vpq904m_remove(struct i2c_client *client)
regulator_disable(nb7->vcc_supply);
typec_mux_put(nb7->typec_mux);
typec_switch_put(nb7->typec_switch);
}