linux/drivers/gpu/drm/msm/adreno/a5xx_gpu.h
Jordan Crouse 6e749e5971 drm/msm: Allow hardware clock gating to be toggled
There are some use cases wherein we need to turn off hardware clock
gating before reading certain registers. Modify the A5XX HWCG function
to allow user to enable or disable clock gating at will.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-08-01 19:10:28 -04:00

65 lines
1.5 KiB
C

/* Copyright (c) 2016 The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __A5XX_GPU_H__
#define __A5XX_GPU_H__
#include "adreno_gpu.h"
/* Bringing over the hack from the previous targets */
#undef ROP_COPY
#undef ROP_XOR
#include "a5xx.xml.h"
struct a5xx_gpu {
struct adreno_gpu base;
struct platform_device *pdev;
struct drm_gem_object *pm4_bo;
uint64_t pm4_iova;
struct drm_gem_object *pfp_bo;
uint64_t pfp_iova;
struct drm_gem_object *gpmu_bo;
uint64_t gpmu_iova;
uint32_t gpmu_dwords;
uint32_t lm_leakage;
struct device zap_dev;
};
#define to_a5xx_gpu(x) container_of(x, struct a5xx_gpu, base)
int a5xx_power_init(struct msm_gpu *gpu);
void a5xx_gpmu_ucode_init(struct msm_gpu *gpu);
static inline int spin_usecs(struct msm_gpu *gpu, uint32_t usecs,
uint32_t reg, uint32_t mask, uint32_t value)
{
while (usecs--) {
udelay(1);
if ((gpu_read(gpu, reg) & mask) == value)
return 0;
cpu_relax();
}
return -ETIMEDOUT;
}
bool a5xx_idle(struct msm_gpu *gpu);
void a5xx_set_hwcg(struct msm_gpu *gpu, bool state);
#endif /* __A5XX_GPU_H__ */