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63945d5149
Add driver pm system and runtime hardware resume/suspend ops. Note this won't enable runtime pm of the device yet. v2: Do clock and power gating when suspend/resume. Tested-by: Bhushan Shah <bshah@kde.org> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-10-yuq825@gmail.com
146 lines
2.5 KiB
C
146 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */
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#ifndef __LIMA_DEVICE_H__
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#define __LIMA_DEVICE_H__
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#include <drm/drm_device.h>
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#include <linux/delay.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include "lima_sched.h"
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#include "lima_dump.h"
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#include "lima_devfreq.h"
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enum lima_gpu_id {
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lima_gpu_mali400 = 0,
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lima_gpu_mali450,
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lima_gpu_num,
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};
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enum lima_ip_id {
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lima_ip_pmu,
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lima_ip_gpmmu,
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lima_ip_ppmmu0,
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lima_ip_ppmmu1,
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lima_ip_ppmmu2,
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lima_ip_ppmmu3,
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lima_ip_ppmmu4,
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lima_ip_ppmmu5,
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lima_ip_ppmmu6,
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lima_ip_ppmmu7,
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lima_ip_gp,
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lima_ip_pp0,
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lima_ip_pp1,
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lima_ip_pp2,
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lima_ip_pp3,
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lima_ip_pp4,
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lima_ip_pp5,
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lima_ip_pp6,
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lima_ip_pp7,
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lima_ip_l2_cache0,
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lima_ip_l2_cache1,
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lima_ip_l2_cache2,
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lima_ip_dlbu,
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lima_ip_bcast,
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lima_ip_pp_bcast,
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lima_ip_ppmmu_bcast,
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lima_ip_num,
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};
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struct lima_device;
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struct lima_ip {
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struct lima_device *dev;
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enum lima_ip_id id;
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bool present;
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void __iomem *iomem;
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int irq;
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union {
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/* gp/pp */
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bool async_reset;
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/* l2 cache */
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spinlock_t lock;
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/* pmu/bcast */
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u32 mask;
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} data;
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};
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enum lima_pipe_id {
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lima_pipe_gp,
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lima_pipe_pp,
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lima_pipe_num,
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};
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struct lima_device {
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struct device *dev;
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struct drm_device *ddev;
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enum lima_gpu_id id;
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u32 gp_version;
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u32 pp_version;
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int num_pp;
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void __iomem *iomem;
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struct clk *clk_bus;
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struct clk *clk_gpu;
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struct reset_control *reset;
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struct regulator *regulator;
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struct lima_ip ip[lima_ip_num];
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struct lima_sched_pipe pipe[lima_pipe_num];
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struct lima_vm *empty_vm;
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uint64_t va_start;
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uint64_t va_end;
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u32 *dlbu_cpu;
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dma_addr_t dlbu_dma;
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struct lima_devfreq devfreq;
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/* debug info */
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struct lima_dump_head dump;
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struct list_head error_task_list;
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struct mutex error_task_list_lock;
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};
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static inline struct lima_device *
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to_lima_dev(struct drm_device *dev)
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{
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return dev->dev_private;
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}
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int lima_device_init(struct lima_device *ldev);
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void lima_device_fini(struct lima_device *ldev);
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const char *lima_ip_name(struct lima_ip *ip);
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typedef int (*lima_poll_func_t)(struct lima_ip *);
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static inline int lima_poll_timeout(struct lima_ip *ip, lima_poll_func_t func,
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int sleep_us, int timeout_us)
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{
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ktime_t timeout = ktime_add_us(ktime_get(), timeout_us);
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might_sleep_if(sleep_us);
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while (1) {
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if (func(ip))
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return 0;
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if (timeout_us && ktime_compare(ktime_get(), timeout) > 0)
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return -ETIMEDOUT;
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if (sleep_us)
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usleep_range((sleep_us >> 2) + 1, sleep_us);
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}
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return 0;
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}
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int lima_device_suspend(struct device *dev);
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int lima_device_resume(struct device *dev);
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#endif
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