* [PATCH v2 1/2] usb: typec: mux: Clean up mux_fwnode_match()
2023-05-26 13:14 [PATCH v2 0/2] usb: typec: mux: Remove the "svid" device property checks Heikki Krogerus
@ 2023-05-26 13:14 ` Heikki Krogerus
2023-05-26 13:14 ` [PATCH v2 2/2] usb: typec: mux: Remove alt mode parameters from the API Heikki Krogerus
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Heikki Krogerus @ 2023-05-26 13:14 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Bjorn Andersson, chrome-platform, linux-usb, linux-arm-msm, linux-kernel
Removing the "svid" and "accessory" device property checks.
Those properties are not supported on any platform.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230522215348.uoyboow26n2o3tel@ripper/
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Bjorn Andersson <andersson@kernel.org>
---
v2: Fixed the comment as requested by Bjorn.
drivers/usb/typec/mux.c | 55 ++++++-----------------------------------
1 file changed, 7 insertions(+), 48 deletions(-)
diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
index d9eaf9a0b0bfd..f2eee6322815d 100644
--- a/drivers/usb/typec/mux.c
+++ b/drivers/usb/typec/mux.c
@@ -265,60 +265,19 @@ static int mux_fwnode_match(struct device *dev, const void *fwnode)
static void *typec_mux_match(const struct fwnode_handle *fwnode,
const char *id, void *data)
{
- const struct typec_altmode_desc *desc = data;
struct device *dev;
- bool match;
- int nval;
- u16 *val;
- int ret;
- int i;
/*
- * Check has the identifier already been "consumed". If it
- * has, no need to do any extra connection identification.
+ * Device graph (OF graph) does not give any means to identify the
+ * device type or the device class of the remote port parent that @fwnode
+ * represents, so in order to identify the type or the class of @fwnode
+ * an additional device property is needed. With typec muxes the
+ * property is named "mode-switch" (@id). The value of the device
+ * property is ignored.
*/
- match = !id;
- if (match)
- goto find_mux;
-
- if (!desc) {
- /*
- * Accessory Mode muxes & muxes which explicitly specify
- * the required identifier can avoid SVID matching.
- */
- match = fwnode_property_present(fwnode, "accessory") ||
- fwnode_property_present(fwnode, id);
- if (match)
- goto find_mux;
- return NULL;
- }
-
- /* Alternate Mode muxes */
- nval = fwnode_property_count_u16(fwnode, "svid");
- if (nval <= 0)
+ if (id && !fwnode_property_present(fwnode, id))
return NULL;
- val = kcalloc(nval, sizeof(*val), GFP_KERNEL);
- if (!val)
- return ERR_PTR(-ENOMEM);
-
- ret = fwnode_property_read_u16_array(fwnode, "svid", val, nval);
- if (ret < 0) {
- kfree(val);
- return ERR_PTR(ret);
- }
-
- for (i = 0; i < nval; i++) {
- match = val[i] == desc->svid;
- if (match) {
- kfree(val);
- goto find_mux;
- }
- }
- kfree(val);
- return NULL;
-
-find_mux:
dev = class_find_device(&typec_mux_class, NULL, fwnode,
mux_fwnode_match);
--
2.39.2
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v2 2/2] usb: typec: mux: Remove alt mode parameters from the API
2023-05-26 13:14 [PATCH v2 0/2] usb: typec: mux: Remove the "svid" device property checks Heikki Krogerus
2023-05-26 13:14 ` [PATCH v2 1/2] usb: typec: mux: Clean up mux_fwnode_match() Heikki Krogerus
@ 2023-05-26 13:14 ` Heikki Krogerus
2023-07-10 5:39 ` [PATCH v2 0/2] usb: typec: mux: Remove the "svid" device property checks patchwork-bot+chrome-platform
2023-07-10 5:53 ` patchwork-bot+chrome-platform
3 siblings, 0 replies; 5+ messages in thread
From: Heikki Krogerus @ 2023-05-26 13:14 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Bjorn Andersson, chrome-platform, linux-usb, linux-arm-msm,
linux-kernel, Prashant Malani
The alt mode descriptor parameters are not used anymore.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Bjorn Andersson <andersson@kernel.org>
Acked-by: Prashant Malani <pmalani@chromium.org>
---
v2: No changes. Adding the Acked-by a Reviewed-by tags.
drivers/platform/chrome/cros_ec_typec.c | 2 +-
drivers/soc/qcom/pmic_glink_altmode.c | 5 +----
drivers/usb/typec/class.c | 4 ++--
drivers/usb/typec/mux.c | 6 ++----
include/linux/usb/typec_mux.h | 11 ++++-------
5 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index a673c33424706..25f9767c28e82 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -77,7 +77,7 @@ static int cros_typec_get_switch_handles(struct cros_typec_port *port,
{
int ret = 0;
- port->mux = fwnode_typec_mux_get(fwnode, NULL);
+ port->mux = fwnode_typec_mux_get(fwnode);
if (IS_ERR(port->mux)) {
ret = PTR_ERR(port->mux);
dev_dbg(dev, "Mux handle not found: %d.\n", ret);
diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c
index 4d7895bdeaf2f..df48fbea4b686 100644
--- a/drivers/soc/qcom/pmic_glink_altmode.c
+++ b/drivers/soc/qcom/pmic_glink_altmode.c
@@ -369,7 +369,6 @@ static int pmic_glink_altmode_probe(struct auxiliary_device *adev,
{
struct pmic_glink_altmode_port *alt_port;
struct pmic_glink_altmode *altmode;
- struct typec_altmode_desc mux_desc = {};
const struct of_device_id *match;
struct fwnode_handle *fwnode;
struct device *dev = &adev->dev;
@@ -427,9 +426,7 @@ static int pmic_glink_altmode_probe(struct auxiliary_device *adev,
alt_port->dp_alt.mode = USB_TYPEC_DP_MODE;
alt_port->dp_alt.active = 1;
- mux_desc.svid = USB_TYPEC_DP_SID;
- mux_desc.mode = USB_TYPEC_DP_MODE;
- alt_port->typec_mux = fwnode_typec_mux_get(fwnode, &mux_desc);
+ alt_port->typec_mux = fwnode_typec_mux_get(fwnode);
if (IS_ERR(alt_port->typec_mux))
return dev_err_probe(dev, PTR_ERR(alt_port->typec_mux),
"failed to acquire mode-switch for port: %d\n",
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 349cc2030c903..faa184ae3dac8 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -2110,7 +2110,7 @@ typec_port_register_altmode(struct typec_port *port,
struct typec_mux *mux;
struct typec_retimer *retimer;
- mux = typec_mux_get(&port->dev, desc);
+ mux = typec_mux_get(&port->dev);
if (IS_ERR(mux))
return ERR_CAST(mux);
@@ -2274,7 +2274,7 @@ struct typec_port *typec_register_port(struct device *parent,
return ERR_PTR(ret);
}
- port->mux = typec_mux_get(&port->dev, NULL);
+ port->mux = typec_mux_get(&port->dev);
if (IS_ERR(port->mux)) {
ret = PTR_ERR(port->mux);
put_device(&port->dev);
diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
index f2eee6322815d..80dd91938d960 100644
--- a/drivers/usb/typec/mux.c
+++ b/drivers/usb/typec/mux.c
@@ -287,15 +287,13 @@ static void *typec_mux_match(const struct fwnode_handle *fwnode,
/**
* fwnode_typec_mux_get - Find USB Type-C Multiplexer
* @fwnode: The caller device node
- * @desc: Alt Mode description
*
* Finds a mux linked to the caller. This function is primarily meant for the
* Type-C drivers. Returns a reference to the mux on success, NULL if no
* matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a connection
* was found but the mux has not been enumerated yet.
*/
-struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode,
- const struct typec_altmode_desc *desc)
+struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode)
{
struct typec_mux_dev *mux_devs[TYPEC_MUX_MAX_DEVS];
struct typec_mux *mux;
@@ -308,7 +306,7 @@ struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode,
return ERR_PTR(-ENOMEM);
count = fwnode_connection_find_matches(fwnode, "mode-switch",
- (void *)desc, typec_mux_match,
+ NULL, typec_mux_match,
(void **)mux_devs,
ARRAY_SIZE(mux_devs));
if (count <= 0) {
diff --git a/include/linux/usb/typec_mux.h b/include/linux/usb/typec_mux.h
index 9292f0e078464..11bfa314529fd 100644
--- a/include/linux/usb/typec_mux.h
+++ b/include/linux/usb/typec_mux.h
@@ -60,8 +60,7 @@ struct typec_mux_desc {
#if IS_ENABLED(CONFIG_TYPEC)
-struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode,
- const struct typec_altmode_desc *desc);
+struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode);
void typec_mux_put(struct typec_mux *mux);
int typec_mux_set(struct typec_mux *mux, struct typec_mux_state *state);
@@ -74,8 +73,7 @@ void *typec_mux_get_drvdata(struct typec_mux_dev *mux);
#else
-static inline struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode,
- const struct typec_altmode_desc *desc)
+static inline struct typec_mux *fwnode_typec_mux_get(struct fwnode_handle *fwnode);
{
return NULL;
}
@@ -102,10 +100,9 @@ static inline void *typec_mux_get_drvdata(struct typec_mux_dev *mux)
#endif /* CONFIG_TYPEC */
-static inline struct typec_mux *
-typec_mux_get(struct device *dev, const struct typec_altmode_desc *desc)
+static inline struct typec_mux *typec_mux_get(struct device *dev)
{
- return fwnode_typec_mux_get(dev_fwnode(dev), desc);
+ return fwnode_typec_mux_get(dev_fwnode(dev));
}
#endif /* __USB_TYPEC_MUX */
--
2.39.2
^ permalink raw reply related [flat|nested] 5+ messages in thread