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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Karunika ChooandLiviu Dudau
10858b2bd8
Stop reaching into other components' registers directly and route those operations through the component that owns them. Move the timestamp/coherency helpers into panthor_gpu, add a doorbell helper, and update call sites accordingly. This keeps register knowledge local to each block and avoids spreading cross-component register accesses across the driver. This is a preparatory cleanup for using per-component iomem bases. v3: - Pick up Ack from Boris and R-bs from Liviu and Steve v2: - Fix incorrect spelling of timestamp helpers - Fix unintended trailing backslash Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Acked-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Karunika Choo <karunika.choo@arm.com> Tested-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com> Link: https://patch.msgid.link/20260427155934.416502-4-karunika.choo@arm.com
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or MIT */
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/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
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/* Copyright 2019 Collabora ltd. */
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#ifndef __PANTHOR_GPU_H__
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#define __PANTHOR_GPU_H__
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#include <linux/types.h>
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struct panthor_device;
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int panthor_gpu_init(struct panthor_device *ptdev);
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void panthor_gpu_unplug(struct panthor_device *ptdev);
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void panthor_gpu_suspend(struct panthor_device *ptdev);
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void panthor_gpu_resume(struct panthor_device *ptdev);
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int panthor_gpu_block_power_on(struct panthor_device *ptdev,
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const char *blk_name,
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u32 pwron_reg, u32 pwrtrans_reg,
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u32 rdy_reg, u64 mask, u32 timeout_us);
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int panthor_gpu_block_power_off(struct panthor_device *ptdev,
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const char *blk_name,
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u32 pwroff_reg, u32 pwrtrans_reg,
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u64 mask, u32 timeout_us);
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/**
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* panthor_gpu_power_on() - Power on the GPU block.
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*
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* Return: 0 on success, a negative error code otherwise.
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*/
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#define panthor_gpu_power_on(ptdev, type, mask, timeout_us) \
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panthor_gpu_block_power_on(ptdev, #type, \
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type ## _PWRON, \
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type ## _PWRTRANS, \
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type ## _READY, \
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mask, timeout_us)
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/**
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* panthor_gpu_power_off() - Power off the GPU block.
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*
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* Return: 0 on success, a negative error code otherwise.
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*/
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#define panthor_gpu_power_off(ptdev, type, mask, timeout_us) \
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panthor_gpu_block_power_off(ptdev, #type, \
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type ## _PWROFF, \
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type ## _PWRTRANS, \
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mask, timeout_us)
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void panthor_gpu_l2_power_off(struct panthor_device *ptdev);
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int panthor_gpu_l2_power_on(struct panthor_device *ptdev);
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int panthor_gpu_flush_caches(struct panthor_device *ptdev,
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u32 l2, u32 lsc, u32 other);
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int panthor_gpu_soft_reset(struct panthor_device *ptdev);
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void panthor_gpu_power_changed_off(struct panthor_device *ptdev);
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int panthor_gpu_power_changed_on(struct panthor_device *ptdev);
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u64 panthor_gpu_get_timestamp(struct panthor_device *ptdev);
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u64 panthor_gpu_get_timestamp_offset(struct panthor_device *ptdev);
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u64 panthor_gpu_get_cycle_count(struct panthor_device *ptdev);
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int panthor_gpu_coherency_init(struct panthor_device *ptdev);
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#endif
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