From: Bjorn Andersson <bjorn.andersson@linaro.org> To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, Hans de Goede <hdegoede@redhat.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 3/8] device property: Helper to match multiple connections Date: Mon, 27 Dec 2021 21:21:11 -0800 [thread overview] Message-ID: <20211228052116.1748443-4-bjorn.andersson@linaro.org> (raw) In-Reply-To: <20211228052116.1748443-1-bjorn.andersson@linaro.org> In some cases multiple connections with the same connection id needs to be resolved from a fwnode graph. One such example is when separate hardware is used for performing muxing and/or orientation switching of the SuperSpeed and SBU lines in a USB-C connector. In this case the connector needs to belong to a graph with multiple matching remote endpoints, and the TypeC controller needs to be able to resolve them both. Add a new API that allows this kind of lookup. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- drivers/base/property.c | 94 ++++++++++++++++++++++++++++++++++++++++ include/linux/property.h | 5 +++ 2 files changed, 99 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index cbe4fa298413..0aa0296fd991 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1180,6 +1180,36 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id, return NULL; } +static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, + unsigned int matches_len) +{ + struct fwnode_handle *node; + struct fwnode_handle *ep; + unsigned int count = 0; + void *ret; + + fwnode_graph_for_each_endpoint(fwnode, ep) { + if (count >= matches_len) { + fwnode_handle_put(ep); + return count; + } + + node = fwnode_graph_get_remote_port_parent(ep); + if (!fwnode_device_is_available(node)) + continue; + + ret = match(node, con_id, data); + fwnode_handle_put(node); + + if (ret) + matches[count++] = ret; + } + return count; +} + static void * fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id, void *data, devcon_match_fn_t match) @@ -1202,6 +1232,35 @@ fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id, return NULL; } +static unsigned int fwnode_devcon_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, + unsigned int matches_len) +{ + struct fwnode_handle *node; + unsigned int count = 0; + void *ret; + int i; + + for (i = 0; ; i++) { + if (count >= matches_len) + return count; + + node = fwnode_find_reference(fwnode, con_id, i); + if (IS_ERR(node)) + break; + + ret = match(node, NULL, data); + fwnode_handle_put(node); + + if (ret) + matches[count++] = ret; + } + + return count; +} + /** * fwnode_connection_find_match - Find connection from a device node * @fwnode: Device node with the connection @@ -1229,3 +1288,38 @@ void *fwnode_connection_find_match(struct fwnode_handle *fwnode, return fwnode_devcon_match(fwnode, con_id, data, match); } EXPORT_SYMBOL_GPL(fwnode_connection_find_match); + +/** + * fwnode_connection_find_matches - Find connections from a device node + * @fwnode: Device node with the connection + * @con_id: Identifier for the connection + * @data: Data for the match function + * @match: Function to check and convert the connection description + * @matches: Array of pointers to fill with matches + * @matches_len: Length of @matches + * + * Find up to @matches_len connections with unique identifier @con_id between + * @fwnode and other device nodes. @match will be used to convert the + * connection description to data the caller is expecting to be returned + * through the @matches array. + * + * Return: Number of matches resolved, of negative errno. + */ +int fwnode_connection_find_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, unsigned int matches_len) +{ + unsigned int count; + + if (!fwnode || !match || !matches) + return -EINVAL; + + count = fwnode_graph_devcon_matches(fwnode, con_id, data, match, + matches, matches_len); + + return count + fwnode_devcon_matches(fwnode, con_id, data, match, + matches + count, + matches_len - count); +} +EXPORT_SYMBOL_GPL(fwnode_connection_find_matches); diff --git a/include/linux/property.h b/include/linux/property.h index 16f736c698a2..59484ccb260e 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -444,6 +444,11 @@ static inline void *device_connection_find_match(struct device *dev, return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match); } +int fwnode_connection_find_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, unsigned int matches_len); + /* -------------------------------------------------------------------------- */ /* Software fwnode support - when HW description is incomplete or missing */ -- 2.33.1
WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Andersson <bjorn.andersson@linaro.org> To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, Hans de Goede <hdegoede@redhat.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 3/8] device property: Helper to match multiple connections Date: Mon, 27 Dec 2021 21:21:11 -0800 [thread overview] Message-ID: <20211228052116.1748443-4-bjorn.andersson@linaro.org> (raw) In-Reply-To: <20211228052116.1748443-1-bjorn.andersson@linaro.org> In some cases multiple connections with the same connection id needs to be resolved from a fwnode graph. One such example is when separate hardware is used for performing muxing and/or orientation switching of the SuperSpeed and SBU lines in a USB-C connector. In this case the connector needs to belong to a graph with multiple matching remote endpoints, and the TypeC controller needs to be able to resolve them both. Add a new API that allows this kind of lookup. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- drivers/base/property.c | 94 ++++++++++++++++++++++++++++++++++++++++ include/linux/property.h | 5 +++ 2 files changed, 99 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index cbe4fa298413..0aa0296fd991 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1180,6 +1180,36 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id, return NULL; } +static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, + unsigned int matches_len) +{ + struct fwnode_handle *node; + struct fwnode_handle *ep; + unsigned int count = 0; + void *ret; + + fwnode_graph_for_each_endpoint(fwnode, ep) { + if (count >= matches_len) { + fwnode_handle_put(ep); + return count; + } + + node = fwnode_graph_get_remote_port_parent(ep); + if (!fwnode_device_is_available(node)) + continue; + + ret = match(node, con_id, data); + fwnode_handle_put(node); + + if (ret) + matches[count++] = ret; + } + return count; +} + static void * fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id, void *data, devcon_match_fn_t match) @@ -1202,6 +1232,35 @@ fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id, return NULL; } +static unsigned int fwnode_devcon_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, + unsigned int matches_len) +{ + struct fwnode_handle *node; + unsigned int count = 0; + void *ret; + int i; + + for (i = 0; ; i++) { + if (count >= matches_len) + return count; + + node = fwnode_find_reference(fwnode, con_id, i); + if (IS_ERR(node)) + break; + + ret = match(node, NULL, data); + fwnode_handle_put(node); + + if (ret) + matches[count++] = ret; + } + + return count; +} + /** * fwnode_connection_find_match - Find connection from a device node * @fwnode: Device node with the connection @@ -1229,3 +1288,38 @@ void *fwnode_connection_find_match(struct fwnode_handle *fwnode, return fwnode_devcon_match(fwnode, con_id, data, match); } EXPORT_SYMBOL_GPL(fwnode_connection_find_match); + +/** + * fwnode_connection_find_matches - Find connections from a device node + * @fwnode: Device node with the connection + * @con_id: Identifier for the connection + * @data: Data for the match function + * @match: Function to check and convert the connection description + * @matches: Array of pointers to fill with matches + * @matches_len: Length of @matches + * + * Find up to @matches_len connections with unique identifier @con_id between + * @fwnode and other device nodes. @match will be used to convert the + * connection description to data the caller is expecting to be returned + * through the @matches array. + * + * Return: Number of matches resolved, of negative errno. + */ +int fwnode_connection_find_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, unsigned int matches_len) +{ + unsigned int count; + + if (!fwnode || !match || !matches) + return -EINVAL; + + count = fwnode_graph_devcon_matches(fwnode, con_id, data, match, + matches, matches_len); + + return count + fwnode_devcon_matches(fwnode, con_id, data, match, + matches + count, + matches_len - count); +} +EXPORT_SYMBOL_GPL(fwnode_connection_find_matches); diff --git a/include/linux/property.h b/include/linux/property.h index 16f736c698a2..59484ccb260e 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -444,6 +444,11 @@ static inline void *device_connection_find_match(struct device *dev, return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match); } +int fwnode_connection_find_matches(struct fwnode_handle *fwnode, + const char *con_id, void *data, + devcon_match_fn_t match, + void **matches, unsigned int matches_len); + /* -------------------------------------------------------------------------- */ /* Software fwnode support - when HW description is incomplete or missing */ -- 2.33.1 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2021-12-28 5:20 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-28 5:21 [PATCH 0/8] typec: mux: Introduce support for multiple TypeC muxes Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 1/8] dt-bindings: phy: qcom,qmp-usb3-dp: Add altmode/switch properties Bjorn Andersson 2021-12-28 5:21 ` [PATCH 1/8] dt-bindings: phy: qcom, qmp-usb3-dp: " Bjorn Andersson 2021-12-28 5:21 ` [PATCH 2/8] phy: qcom-qmp: Register typec mux and orientation switch Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 12:25 ` Dmitry Baryshkov 2021-12-28 12:25 ` Dmitry Baryshkov 2021-12-28 13:59 ` kernel test robot 2021-12-28 13:59 ` kernel test robot 2021-12-28 13:59 ` kernel test robot 2021-12-28 16:20 ` Bjorn Andersson 2021-12-28 16:20 ` Bjorn Andersson 2021-12-28 16:20 ` Bjorn Andersson 2021-12-29 5:27 ` Vinod Koul 2021-12-29 5:27 ` Vinod Koul 2022-01-07 19:15 ` Bjorn Andersson 2022-01-07 19:15 ` Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson [this message] 2021-12-28 5:21 ` [PATCH 3/8] device property: Helper to match multiple connections Bjorn Andersson 2021-12-28 13:09 ` Dmitry Baryshkov 2021-12-28 13:09 ` Dmitry Baryshkov 2021-12-28 17:04 ` Bjorn Andersson 2021-12-28 17:04 ` Bjorn Andersson 2021-12-28 18:24 ` Dmitry Baryshkov 2021-12-28 18:24 ` Dmitry Baryshkov 2021-12-28 18:42 ` Bjorn Andersson 2021-12-28 18:42 ` Bjorn Andersson 2021-12-29 5:40 ` Vinod Koul 2021-12-29 5:40 ` Vinod Koul 2021-12-30 9:26 ` Heikki Krogerus 2021-12-30 9:26 ` Heikki Krogerus 2021-12-31 9:09 ` Sakari Ailus 2021-12-31 9:09 ` Sakari Ailus 2022-01-05 20:43 ` Bjorn Andersson 2022-01-05 20:43 ` Bjorn Andersson 2022-01-07 14:33 ` Sakari Ailus 2022-01-07 14:33 ` Sakari Ailus 2022-01-07 15:15 ` Bjorn Andersson 2022-01-07 15:15 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 4/8] device property: Use multi-connection matchers for single case Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 5/8] typec: mux: Introduce indirection Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 6/8] typec: mux: Allow multiple mux_devs per mux Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 16:04 ` Dmitry Baryshkov 2021-12-28 16:04 ` Dmitry Baryshkov 2021-12-28 16:40 ` Bjorn Andersson 2021-12-28 16:40 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 7/8] dt-bindings: usb: Add binding for fcs,fsa4480 Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 5:21 ` [PATCH 8/8] usb: typec: mux: Add On Semi fsa4480 driver Bjorn Andersson 2021-12-28 5:21 ` Bjorn Andersson 2021-12-28 12:20 ` [PATCH 0/8] typec: mux: Introduce support for multiple TypeC muxes Hans de Goede 2021-12-28 12:20 ` Hans de Goede 2021-12-28 17:08 ` Bjorn Andersson 2021-12-28 17:08 ` Bjorn Andersson 2021-12-28 15:41 [PATCH 6/8] typec: mux: Allow multiple mux_devs per mux kernel test robot 2022-01-06 10:43 ` Dan Carpenter 2022-01-06 10:43 ` Dan Carpenter 2022-01-06 10:43 ` Dan Carpenter
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