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![Linus Torvalds](/assets/img/avatar_default.png)
Various driver updates for platforms: - A larger set of work on Tegra 2/3 around memory controller and regulator features, some fuse cleanups, etc.. - MMP platform drivers, in particular for USB PHY, and other smaller additions. - Samsung Exynos 5422 driver for DMC (dynamic memory configuration), and ASV (adaptive voltage), allowing the platform to run at more optimal operating points. - Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas - Clock/reset control driver for TI/OMAP - Meson-A1 reset controller support - Qualcomm sdm845 and sda845 SoC IDs for socinfo -----BEGIN PGP SIGNATURE----- iQJDBAABCAAtFiEElf+HevZ4QCAJmMQ+jBrnPN6EHHcFAl3pORkPHG9sb2ZAbGl4 b20ubmV0AAoJEIwa5zzehBx3FK0P/0EG4lK+il7nE3pd9yIGUjlcYuumIjoxvyC9 9ef202POJLIO3yMlsNyGFR+aOknFO/GtGvDkDFhTtlsGCL40tVzVsyo7ZQo+8mXD abr+H74NmRXImc+SISYR8X1CD6vEi3oi/no1y5dRzknlBikfsdSLKXJSMYBJ2A6t DNLwu0h1IZhPk7XQQsxaElG/a9HN8eueMdP20J1IlhOh0GiOwm+rbsLSZNbA/W9m 53XhFs3Ag39SDE0BfXsS+XOWTE7FheZsZk2XQrOwYm9PnxjpIWH7FE2sYsk6uUIc Pa1b6wB5zlRnxvVHP0m3GXhbTUJDYDK3oybHffI4Mzd0cyZQHC92LhUXFrlTxkaf 6kyhJOTdd5KMlZ2LS7jkwLqb30ieXBPKAREjdbRt6hpvu5P6G+bZQphTEeNAZC61 XnX8mQ/XeoHdoGY5MvS8ht6a1qDF29ebA0/02seicThGK6tS9Qsju6Zo0sg9H1NH weK6jDuzLq5jpv/LB1apigrDSx+zddRzrwkwy85hR5aWOQhG0xjOoFBProbTS0to wR46zCEkbGZv4uc0gRuIdp0NR/lguqgDWPeoLluoTqmcpKS6N3RyxD0bWzlvgDFA fpYxVNKavHneWjfZ7U5RbYXD6jycJcuLaCOs16nrtUbMgJ9pqclLIaZXn7ZTRIuT RW6NgfZV =dk7w -----END PGP SIGNATURE----- Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC driver updates from Olof Johansson: "Various driver updates for platforms: - A larger set of work on Tegra 2/3 around memory controller and regulator features, some fuse cleanups, etc.. - MMP platform drivers, in particular for USB PHY, and other smaller additions. - Samsung Exynos 5422 driver for DMC (dynamic memory configuration), and ASV (adaptive voltage), allowing the platform to run at more optimal operating points. - Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas - Clock/reset control driver for TI/OMAP - Meson-A1 reset controller support - Qualcomm sdm845 and sda845 SoC IDs for socinfo" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (150 commits) firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT soc: fsl: add RCPM driver dt-bindings: fsl: rcpm: Add 'little-endian' and update Chassis definition memory: tegra: Consolidate registers definition into common header memory: tegra: Ensure timing control debug features are disabled memory: tegra: Introduce Tegra30 EMC driver memory: tegra: Do not handle error from wait_for_completion_timeout() memory: tegra: Increase handshake timeout on Tegra20 memory: tegra: Print a brief info message about EMC timings memory: tegra: Pre-configure debug register on Tegra20 memory: tegra: Include io.h instead of iopoll.h memory: tegra: Adapt for Tegra20 clock driver changes memory: tegra: Don't set EMC rate to maximum on probe for Tegra20 memory: tegra: Add gr2d and gr3d to DRM IOMMU group memory: tegra: Set DMA mask based on supported address bits soc: at91: Add Atmel SFR SN (Serial Number) support memory: atmel-ebi: switch to SPDX license identifiers memory: atmel-ebi: move NUM_CS definition inside EBI driver soc: mediatek: Refactor bus protection control soc: mediatek: Refactor sram control ...
544 lines
17 KiB
C
544 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_RESET_H_
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#define _LINUX_RESET_H_
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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struct device;
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struct device_node;
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struct reset_control;
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#ifdef CONFIG_RESET_CONTROLLER
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int reset_control_reset(struct reset_control *rstc);
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int reset_control_assert(struct reset_control *rstc);
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int reset_control_deassert(struct reset_control *rstc);
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int reset_control_status(struct reset_control *rstc);
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int reset_control_acquire(struct reset_control *rstc);
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void reset_control_release(struct reset_control *rstc);
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struct reset_control *__of_reset_control_get(struct device_node *node,
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const char *id, int index, bool shared,
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bool optional, bool acquired);
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struct reset_control *__reset_control_get(struct device *dev, const char *id,
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int index, bool shared,
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bool optional, bool acquired);
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void reset_control_put(struct reset_control *rstc);
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int __device_reset(struct device *dev, bool optional);
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struct reset_control *__devm_reset_control_get(struct device *dev,
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const char *id, int index, bool shared,
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bool optional, bool acquired);
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struct reset_control *devm_reset_control_array_get(struct device *dev,
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bool shared, bool optional);
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struct reset_control *of_reset_control_array_get(struct device_node *np,
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bool shared, bool optional,
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bool acquired);
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int reset_control_get_count(struct device *dev);
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#else
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static inline int reset_control_reset(struct reset_control *rstc)
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{
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return 0;
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}
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static inline int reset_control_assert(struct reset_control *rstc)
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{
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return 0;
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}
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static inline int reset_control_deassert(struct reset_control *rstc)
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{
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return 0;
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}
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static inline int reset_control_status(struct reset_control *rstc)
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{
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return 0;
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}
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static inline int reset_control_acquire(struct reset_control *rstc)
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{
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return 0;
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}
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static inline void reset_control_release(struct reset_control *rstc)
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{
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}
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static inline void reset_control_put(struct reset_control *rstc)
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{
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}
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static inline int __device_reset(struct device *dev, bool optional)
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{
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return optional ? 0 : -ENOTSUPP;
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}
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static inline struct reset_control *__of_reset_control_get(
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struct device_node *node,
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const char *id, int index, bool shared,
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bool optional, bool acquired)
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{
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return optional ? NULL : ERR_PTR(-ENOTSUPP);
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}
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static inline struct reset_control *__reset_control_get(
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struct device *dev, const char *id,
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int index, bool shared, bool optional,
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bool acquired)
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{
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return optional ? NULL : ERR_PTR(-ENOTSUPP);
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}
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static inline struct reset_control *__devm_reset_control_get(
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struct device *dev, const char *id,
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int index, bool shared, bool optional,
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bool acquired)
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{
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return optional ? NULL : ERR_PTR(-ENOTSUPP);
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}
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static inline struct reset_control *
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devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
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{
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return optional ? NULL : ERR_PTR(-ENOTSUPP);
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}
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static inline struct reset_control *
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of_reset_control_array_get(struct device_node *np, bool shared, bool optional,
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bool acquired)
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{
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return optional ? NULL : ERR_PTR(-ENOTSUPP);
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}
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static inline int reset_control_get_count(struct device *dev)
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{
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return -ENOENT;
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}
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#endif /* CONFIG_RESET_CONTROLLER */
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static inline int __must_check device_reset(struct device *dev)
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{
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return __device_reset(dev, false);
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}
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static inline int device_reset_optional(struct device *dev)
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{
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return __device_reset(dev, true);
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}
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/**
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* reset_control_get_exclusive - Lookup and obtain an exclusive reference
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* to a reset controller.
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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* If this function is called more than once for the same reset_control it will
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* return -EBUSY.
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*
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* See reset_control_get_shared() for details on shared references to
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* reset-controls.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *
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__must_check reset_control_get_exclusive(struct device *dev, const char *id)
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{
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return __reset_control_get(dev, id, 0, false, false, true);
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}
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/**
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* reset_control_get_exclusive_released - Lookup and obtain a temoprarily
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* exclusive reference to a reset
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* controller.
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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* reset-controls returned by this function must be acquired via
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* reset_control_acquire() before they can be used and should be released
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* via reset_control_release() afterwards.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *
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__must_check reset_control_get_exclusive_released(struct device *dev,
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const char *id)
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{
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return __reset_control_get(dev, id, 0, false, false, false);
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}
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/**
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* reset_control_get_shared - Lookup and obtain a shared reference to a
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* reset controller.
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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* This function is intended for use with reset-controls which are shared
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* between hardware blocks.
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*
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* When a reset-control is shared, the behavior of reset_control_assert /
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* deassert is changed, the reset-core will keep track of a deassert_count
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* and only (re-)assert the reset after reset_control_assert has been called
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* as many times as reset_control_deassert was called. Also see the remark
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* about shared reset-controls in the reset_control_assert docs.
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*
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* Calling reset_control_assert without first calling reset_control_deassert
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* is not allowed on a shared reset control. Calling reset_control_reset is
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* also not allowed on a shared reset control.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *reset_control_get_shared(
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struct device *dev, const char *id)
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{
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return __reset_control_get(dev, id, 0, true, false, false);
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}
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/**
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* reset_control_get_optional_exclusive - optional reset_control_get_exclusive()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Optional variant of reset_control_get_exclusive(). If the requested reset
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* is not specified in the device tree, this function returns NULL instead of
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* an error.
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*
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* See reset_control_get_exclusive() for more information.
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*/
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static inline struct reset_control *reset_control_get_optional_exclusive(
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struct device *dev, const char *id)
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{
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return __reset_control_get(dev, id, 0, false, true, true);
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}
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/**
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* reset_control_get_optional_shared - optional reset_control_get_shared()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Optional variant of reset_control_get_shared(). If the requested reset
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* is not specified in the device tree, this function returns NULL instead of
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* an error.
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*
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* See reset_control_get_shared() for more information.
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*/
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static inline struct reset_control *reset_control_get_optional_shared(
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struct device *dev, const char *id)
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{
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return __reset_control_get(dev, id, 0, true, true, false);
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}
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/**
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* of_reset_control_get_exclusive - Lookup and obtain an exclusive reference
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* to a reset controller.
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* @node: device to be reset by the controller
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* @id: reset line name
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*
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *of_reset_control_get_exclusive(
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struct device_node *node, const char *id)
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{
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return __of_reset_control_get(node, id, 0, false, false, true);
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}
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/**
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* of_reset_control_get_shared - Lookup and obtain a shared reference
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* to a reset controller.
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* @node: device to be reset by the controller
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* @id: reset line name
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*
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* When a reset-control is shared, the behavior of reset_control_assert /
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* deassert is changed, the reset-core will keep track of a deassert_count
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* and only (re-)assert the reset after reset_control_assert has been called
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* as many times as reset_control_deassert was called. Also see the remark
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* about shared reset-controls in the reset_control_assert docs.
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*
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* Calling reset_control_assert without first calling reset_control_deassert
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* is not allowed on a shared reset control. Calling reset_control_reset is
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* also not allowed on a shared reset control.
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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*
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* Use of id names is optional.
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*/
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static inline struct reset_control *of_reset_control_get_shared(
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struct device_node *node, const char *id)
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{
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return __of_reset_control_get(node, id, 0, true, false, false);
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}
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/**
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* of_reset_control_get_exclusive_by_index - Lookup and obtain an exclusive
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* reference to a reset controller
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* by index.
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* @node: device to be reset by the controller
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* @index: index of the reset controller
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*
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* This is to be used to perform a list of resets for a device or power domain
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* in whatever order. Returns a struct reset_control or IS_ERR() condition
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* containing errno.
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*/
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static inline struct reset_control *of_reset_control_get_exclusive_by_index(
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struct device_node *node, int index)
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{
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return __of_reset_control_get(node, NULL, index, false, false, true);
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}
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/**
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* of_reset_control_get_shared_by_index - Lookup and obtain a shared
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* reference to a reset controller
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* by index.
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* @node: device to be reset by the controller
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* @index: index of the reset controller
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*
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* When a reset-control is shared, the behavior of reset_control_assert /
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* deassert is changed, the reset-core will keep track of a deassert_count
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* and only (re-)assert the reset after reset_control_assert has been called
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* as many times as reset_control_deassert was called. Also see the remark
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* about shared reset-controls in the reset_control_assert docs.
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*
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* Calling reset_control_assert without first calling reset_control_deassert
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* is not allowed on a shared reset control. Calling reset_control_reset is
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* also not allowed on a shared reset control.
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* Returns a struct reset_control or IS_ERR() condition containing errno.
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*
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* This is to be used to perform a list of resets for a device or power domain
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* in whatever order. Returns a struct reset_control or IS_ERR() condition
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* containing errno.
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*/
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static inline struct reset_control *of_reset_control_get_shared_by_index(
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struct device_node *node, int index)
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{
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return __of_reset_control_get(node, NULL, index, true, false, false);
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}
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/**
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* devm_reset_control_get_exclusive - resource managed
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* reset_control_get_exclusive()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get_exclusive(). For reset controllers returned
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* from this function, reset_control_put() is called automatically on driver
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* detach.
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*
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* See reset_control_get_exclusive() for more information.
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*/
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static inline struct reset_control *
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__must_check devm_reset_control_get_exclusive(struct device *dev,
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const char *id)
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{
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return __devm_reset_control_get(dev, id, 0, false, false, true);
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}
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/**
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* devm_reset_control_get_exclusive_released - resource managed
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* reset_control_get_exclusive_released()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get_exclusive_released(). For reset controllers
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* returned from this function, reset_control_put() is called automatically on
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* driver detach.
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*
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* See reset_control_get_exclusive_released() for more information.
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*/
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static inline struct reset_control *
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__must_check devm_reset_control_get_exclusive_released(struct device *dev,
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const char *id)
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{
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return __devm_reset_control_get(dev, id, 0, false, false, false);
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}
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/**
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* devm_reset_control_get_shared - resource managed reset_control_get_shared()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get_shared(). For reset controllers returned from
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* this function, reset_control_put() is called automatically on driver detach.
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* See reset_control_get_shared() for more information.
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*/
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static inline struct reset_control *devm_reset_control_get_shared(
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struct device *dev, const char *id)
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{
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return __devm_reset_control_get(dev, id, 0, true, false, false);
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}
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/**
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* devm_reset_control_get_optional_exclusive - resource managed
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* reset_control_get_optional_exclusive()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get_optional_exclusive(). For reset controllers
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* returned from this function, reset_control_put() is called automatically on
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* driver detach.
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*
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* See reset_control_get_optional_exclusive() for more information.
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*/
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static inline struct reset_control *devm_reset_control_get_optional_exclusive(
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struct device *dev, const char *id)
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{
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return __devm_reset_control_get(dev, id, 0, false, true, true);
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}
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/**
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* devm_reset_control_get_optional_shared - resource managed
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* reset_control_get_optional_shared()
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* @dev: device to be reset by the controller
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* @id: reset line name
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*
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* Managed reset_control_get_optional_shared(). For reset controllers returned
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* from this function, reset_control_put() is called automatically on driver
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* detach.
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*
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* See reset_control_get_optional_shared() for more information.
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*/
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static inline struct reset_control *devm_reset_control_get_optional_shared(
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struct device *dev, const char *id)
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{
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return __devm_reset_control_get(dev, id, 0, true, true, false);
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}
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/**
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* devm_reset_control_get_exclusive_by_index - resource managed
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* reset_control_get_exclusive()
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* @dev: device to be reset by the controller
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* @index: index of the reset controller
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*
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* Managed reset_control_get_exclusive(). For reset controllers returned from
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* this function, reset_control_put() is called automatically on driver
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* detach.
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*
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|
* See reset_control_get_exclusive() for more information.
|
|
*/
|
|
static inline struct reset_control *
|
|
devm_reset_control_get_exclusive_by_index(struct device *dev, int index)
|
|
{
|
|
return __devm_reset_control_get(dev, NULL, index, false, false, true);
|
|
}
|
|
|
|
/**
|
|
* devm_reset_control_get_shared_by_index - resource managed
|
|
* reset_control_get_shared
|
|
* @dev: device to be reset by the controller
|
|
* @index: index of the reset controller
|
|
*
|
|
* Managed reset_control_get_shared(). For reset controllers returned from
|
|
* this function, reset_control_put() is called automatically on driver detach.
|
|
* See reset_control_get_shared() for more information.
|
|
*/
|
|
static inline struct reset_control *
|
|
devm_reset_control_get_shared_by_index(struct device *dev, int index)
|
|
{
|
|
return __devm_reset_control_get(dev, NULL, index, true, false, false);
|
|
}
|
|
|
|
/*
|
|
* TEMPORARY calls to use during transition:
|
|
*
|
|
* of_reset_control_get() => of_reset_control_get_exclusive()
|
|
*
|
|
* These inline function calls will be removed once all consumers
|
|
* have been moved over to the new explicit API.
|
|
*/
|
|
static inline struct reset_control *of_reset_control_get(
|
|
struct device_node *node, const char *id)
|
|
{
|
|
return of_reset_control_get_exclusive(node, id);
|
|
}
|
|
|
|
static inline struct reset_control *of_reset_control_get_by_index(
|
|
struct device_node *node, int index)
|
|
{
|
|
return of_reset_control_get_exclusive_by_index(node, index);
|
|
}
|
|
|
|
static inline struct reset_control *devm_reset_control_get(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return devm_reset_control_get_exclusive(dev, id);
|
|
}
|
|
|
|
static inline struct reset_control *devm_reset_control_get_optional(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return devm_reset_control_get_optional_exclusive(dev, id);
|
|
|
|
}
|
|
|
|
static inline struct reset_control *devm_reset_control_get_by_index(
|
|
struct device *dev, int index)
|
|
{
|
|
return devm_reset_control_get_exclusive_by_index(dev, index);
|
|
}
|
|
|
|
/*
|
|
* APIs to manage a list of reset controllers
|
|
*/
|
|
static inline struct reset_control *
|
|
devm_reset_control_array_get_exclusive(struct device *dev)
|
|
{
|
|
return devm_reset_control_array_get(dev, false, false);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
devm_reset_control_array_get_shared(struct device *dev)
|
|
{
|
|
return devm_reset_control_array_get(dev, true, false);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
devm_reset_control_array_get_optional_exclusive(struct device *dev)
|
|
{
|
|
return devm_reset_control_array_get(dev, false, true);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
devm_reset_control_array_get_optional_shared(struct device *dev)
|
|
{
|
|
return devm_reset_control_array_get(dev, true, true);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
of_reset_control_array_get_exclusive(struct device_node *node)
|
|
{
|
|
return of_reset_control_array_get(node, false, false, true);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
of_reset_control_array_get_exclusive_released(struct device_node *node)
|
|
{
|
|
return of_reset_control_array_get(node, false, false, false);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
of_reset_control_array_get_shared(struct device_node *node)
|
|
{
|
|
return of_reset_control_array_get(node, true, false, true);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
of_reset_control_array_get_optional_exclusive(struct device_node *node)
|
|
{
|
|
return of_reset_control_array_get(node, false, true, true);
|
|
}
|
|
|
|
static inline struct reset_control *
|
|
of_reset_control_array_get_optional_shared(struct device_node *node)
|
|
{
|
|
return of_reset_control_array_get(node, true, true, true);
|
|
}
|
|
#endif
|