Merge tag 'reset-for-v7.1' of https://git.pengutronix.de/git/pza/linux into soc/drivers

Reset controller updates for v7.1

* Rework the reset core to support firmware nodes, add more fine
  grained locking, and use guard() helpers.
* Change the reset-gpio driver to use firmware nodes.
* Add support for the Cix Sky1 SoC reset controller.
* Add support for the RZ/G3E SoC to the reset-rzv2h-usb2phy driver and
  convert it to regmap. Prepare registering a VBUS mux controller.
* Replace use of the deprecated register_restart_handler() function in
  the ath79, intel-gw, lpc18xx, ma35d1, npcm, and sunplus reset drivers.
* Combine two allocations into one in the sti/reset-syscfg driver.
* Fix the reset-rzg2l-usbphy-ctrl MODULE_AUTHOR email.
* Fix the reset_control_rearm() kerneldoc comment.

The last commit is a merge of reset-fixes-for-v7.0-2 into reset/next,
to solve a merge conflict between commits a9b95ce36de4 ("reset: gpio: add a
devlink between reset-gpio and its consumer") and fbffb8c7c7bb ("reset: gpio:
fix double free in reset_add_gpio_aux_device() error path").

* tag 'reset-for-v7.1' of https://git.pengutronix.de/git/pza/linux: (35 commits)
  reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
  reset: rzv2h-usb2phy: Convert to regmap API
  dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/G3E USB2PHY reset
  dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property
  reset: core: Drop unnecessary double quote
  reset: rzv2h-usb2phy: Keep PHY clock enabled for entire device lifetime
  reset: spacemit: k3: Decouple composite reset lines
  reset: gpio: fix double free in reset_add_gpio_aux_device() error path
  reset: rzg2l-usbphy-ctrl: Fix malformed MODULE_AUTHOR string
  reset: sti: kzalloc + kcalloc to kzalloc
  reset: don't overwrite fwnode_reset_n_cells
  reset: core: Fix indentation
  reset: add Sky1 soc reset support
  dt-bindings: soc: cix: document the syscon on Sky1 SoC
  reset: gpio: make the driver fwnode-agnostic
  reset: convert reset core to using firmware nodes
  reset: convert the core API to using firmware nodes
  reset: convert of_reset_control_get_count() to using firmware nodes
  reset: protect struct reset_control with its own mutex
  reset: protect struct reset_controller_dev with its own mutex
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 15 insertions, 6 deletions

diff --git a/include/linux/reset-controller.h b/include/linux/reset-controller.h
index 46514cb1b9e0..52a5a4e81f18 100644
--- a/include/linux/reset-controller.h
+++ b/include/linux/reset-controller.h
@@ -3,7 +3,10 @@
 #define _LINUX_RESET_CONTROLLER_H_
 
 #include <linux/list.h>
+#include <linux/mutex.h>
 
+struct fwnode_handle;
+struct fwnode_reference_args;
 struct reset_controller_dev;
 
 /**
@@ -35,14 +38,16 @@ struct of_phandle_args;
  * @reset_control_head: head of internal list of requested reset controls
  * @dev: corresponding driver model device struct
  * @of_node: corresponding device tree node as phandle target
- * @of_args: for reset-gpios controllers: corresponding phandle args with
- *           of_node and GPIO number complementing of_node; either this or
- *           of_node should be present
  * @of_reset_n_cells: number of cells in reset line specifiers
  * @of_xlate: translation function to translate from specifier as found in the
- *            device tree to id as given to the reset control ops, defaults
- *            to :c:func:`of_reset_simple_xlate`.
+ *            device tree to id as given to the reset control ops
+ * @fwnode: firmware node associated with this device
+ * @fwnode_reset_n_cells: number of cells in reset line specifiers
+ * @fwnode_xlate: translation function to translate from firmware specifier to
+ *                id as given to the reset control ops, defaults to
+ *                :c:func:`fwnode_reset_simple_xlate`
  * @nr_resets: number of reset controls in this reset controller device
+ * @lock: protects the reset control list from concurrent access
  */
 struct reset_controller_dev {
 	const struct reset_control_ops *ops;
@@ -51,11 +56,15 @@ struct reset_controller_dev {
 	struct list_head reset_control_head;
 	struct device *dev;
 	struct device_node *of_node;
-	const struct of_phandle_args *of_args;
 	int of_reset_n_cells;
 	int (*of_xlate)(struct reset_controller_dev *rcdev,
 			const struct of_phandle_args *reset_spec);
+	struct fwnode_handle *fwnode;
+	int fwnode_reset_n_cells;
+	int (*fwnode_xlate)(struct reset_controller_dev *rcdev,
+			    const struct fwnode_reference_args *reset_spec);
 	unsigned int nr_resets;
+	struct mutex lock;
 };
 
 #if IS_ENABLED(CONFIG_RESET_CONTROLLER)