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5 Commits

Author SHA1 Message Date
Heikki Krogerus
ad70d14fe3 device connection: Add fwnode_connection_find_match() 
commit 44493062abc38e5895e0cf8d22698f2ca39a1e4d upstream.

The fwnode_connection_find_match() function is exactly the
same as device_connection_find_match(), except it takes
struct fwnode_handle as parameter instead of struct device.
That allows locating device connections before the device
entries have been created.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1567070558-29417-7-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
 2020-02-23 19:05:13 +01:00
Heikki Krogerus
d138499619 device connection: Find connections also by checking the references 
commit fde777791eb83f6c5845b81af89de6be60a2b2ce upstream.

We can also use this API to find named references that the
device nodes have by using fwnode_property_get_reference_args()
function.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
 2020-02-23 19:05:13 +01:00
Heikki Krogerus
35d1f8cc20 device connection: Find device connections also from device graphs 
commit 637e9e52b185e5b10372366bd6db97f27cf3f202 upstream.

If connections between devices are described in OF graph or
ACPI device graph, we can find them by using the
fwnode_graph_*() functions.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jun Li <jun.li@nxp.com>
Tested-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
 2020-02-23 19:05:13 +01:00
Heikki Krogerus
2f3a3efd4e device connection: Prepare support for firmware described connections 
commit 80e04837a40f6f1c8e93437be3f772c967a41d2f upstream.

When the connections are defined in firmware, struct
device_connection will have the fwnode member pointing to
the device node (struct fwnode_handle) of the requested
device. The endpoint member for the device names will not be
used at all in that case.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jun Li <jun.li@nxp.com>
Tested-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
 2020-02-23 19:05:12 +01:00
Heikki Krogerus
f2d9b66d84 drivers: base: Unified device connection lookup 
Several frameworks - clk, gpio, phy, pmw, etc. - maintain
lookup tables for describing connections and provide custom
API for handling them. This introduces a single generic
lookup table and API for the connections.

The motivation for this commit is centralizing the
connection lookup, but the goal is to ultimately extract the
connection descriptions also from firmware by using the
fwnode_graph_* functions and other mechanisms that are
available.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-03-22 13:10:29 +01:00