diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h new file mode 100644 index 000000000..b6f53ca6e --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -0,0 +1,209 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + */ + +#ifndef __DPU_KMS_H__ +#define __DPU_KMS_H__ + +#include <linux/interconnect.h> + +#include <drm/drm_drv.h> + +#include "msm_drv.h" +#include "msm_kms.h" +#include "msm_mmu.h" +#include "msm_gem.h" +#include "dpu_hw_catalog.h" +#include "dpu_hw_ctl.h" +#include "dpu_hw_lm.h" +#include "dpu_hw_interrupts.h" +#include "dpu_hw_top.h" +#include "dpu_rm.h" +#include "dpu_core_perf.h" + +#define DRMID(x) ((x) ? (x)->base.id : -1) + +/** + * DPU_DEBUG - macro for kms/plane/crtc/encoder/connector logs + * @fmt: Pointer to format string + */ +#define DPU_DEBUG(fmt, ...) \ + do { \ + if (drm_debug_enabled(DRM_UT_KMS)) \ + DRM_DEBUG(fmt, ##__VA_ARGS__); \ + else \ + pr_debug(fmt, ##__VA_ARGS__); \ + } while (0) + +/** + * DPU_DEBUG_DRIVER - macro for hardware driver logging + * @fmt: Pointer to format string + */ +#define DPU_DEBUG_DRIVER(fmt, ...) \ + do { \ + if (drm_debug_enabled(DRM_UT_DRIVER)) \ + DRM_ERROR(fmt, ##__VA_ARGS__); \ + else \ + pr_debug(fmt, ##__VA_ARGS__); \ + } while (0) + +#define DPU_ERROR(fmt, ...) pr_err("[dpu error]" fmt, ##__VA_ARGS__) + +/** + * ktime_compare_safe - compare two ktime structures + * This macro is similar to the standard ktime_compare() function, but + * attempts to also handle ktime overflows. + * @A: First ktime value + * @B: Second ktime value + * Returns: -1 if A < B, 0 if A == B, 1 if A > B + */ +#define ktime_compare_safe(A, B) \ + ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0)) + +struct dpu_kms { + struct msm_kms base; + struct drm_device *dev; + const struct dpu_mdss_cfg *catalog; + const struct msm_mdss_data *mdss; + + /* io/register spaces: */ + void __iomem *mmio, *vbif[VBIF_MAX]; + + struct regulator *vdd; + struct regulator *mmagic; + struct regulator *venus; + + struct dpu_hw_intr *hw_intr; + + struct dpu_core_perf perf; + + /* + * Global private object state, Do not access directly, use + * dpu_kms_global_get_state() + */ + struct drm_modeset_lock global_state_lock; + struct drm_private_obj global_state; + + struct dpu_rm rm; + bool rm_init; + + struct dpu_hw_vbif *hw_vbif[VBIF_MAX]; + struct dpu_hw_mdp *hw_mdp; + + bool has_danger_ctrl; + + struct platform_device *pdev; + bool rpm_enabled; + + struct clk_bulk_data *clocks; + size_t num_clocks; + + /* reference count bandwidth requests, so we know when we can + * release bandwidth. Each atomic update increments, and frame- + * done event decrements. Additionally, for video mode, the + * reference is incremented when crtc is enabled, and decremented + * when disabled. + */ + atomic_t bandwidth_ref; + struct icc_path *path[2]; + u32 num_paths; +}; + +struct vsync_info { + u32 frame_count; + u32 line_count; +}; + +#define DPU_ENC_WR_PTR_START_TIMEOUT_US 20000 + +#define DPU_ENC_MAX_POLL_TIMEOUT_US 2000 + +#define to_dpu_kms(x) container_of(x, struct dpu_kms, base) + +#define to_dpu_global_state(x) container_of(x, struct dpu_global_state, base) + +/* Global private object state for tracking resources that are shared across + * multiple kms objects (planes/crtcs/etc). + */ +struct dpu_global_state { + struct drm_private_state base; + + uint32_t pingpong_to_enc_id[PINGPONG_MAX - PINGPONG_0]; + uint32_t mixer_to_enc_id[LM_MAX - LM_0]; + uint32_t ctl_to_enc_id[CTL_MAX - CTL_0]; + uint32_t dspp_to_enc_id[DSPP_MAX - DSPP_0]; + uint32_t dsc_to_enc_id[DSC_MAX - DSC_0]; +}; + +struct dpu_global_state + *dpu_kms_get_existing_global_state(struct dpu_kms *dpu_kms); +struct dpu_global_state + *__must_check dpu_kms_get_global_state(struct drm_atomic_state *s); + +/** + * Debugfs functions - extra helper functions for debugfs support + * + * Main debugfs documentation is located at, + * + * Documentation/filesystems/debugfs.rst + * + * @dpu_debugfs_create_regset32: Create 32-bit register dump file + */ + +/** + * dpu_debugfs_create_regset32 - Create register read back file for debugfs + * + * This function is almost identical to the standard debugfs_create_regset32() + * function, with the main difference being that a list of register + * names/offsets do not need to be provided. The 'read' function simply outputs + * sequential register values over a specified range. + * + * @name: File name within debugfs + * @mode: File mode within debugfs + * @parent: Parent directory entry within debugfs, can be NULL + * @offset: sub-block offset + * @length: sub-block length, in bytes + * @dpu_kms: pointer to dpu kms structure + */ +void dpu_debugfs_create_regset32(const char *name, umode_t mode, + void *parent, + uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms); + +/** + * dpu_debugfs_get_root - Return root directory entry for KMS's debugfs + * + * The return value should be passed as the 'parent' argument to subsequent + * debugfs create calls. + * + * @dpu_kms: Pointer to DPU's KMS structure + * + * Return: dentry pointer for DPU's debugfs location + */ +void *dpu_debugfs_get_root(struct dpu_kms *dpu_kms); + +/** + * DPU info management functions + * These functions/definitions allow for building up a 'dpu_info' structure + * containing one or more "key=value\n" entries. + */ +#define DPU_KMS_INFO_MAX_SIZE 4096 + +/** + * Vblank enable/disable functions + */ +int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc); +void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc); + +/** + * dpu_kms_get_clk_rate() - get the clock rate + * @dpu_kms: pointer to dpu_kms structure + * @clock_name: clock name to get the rate + * + * Return: current clock rate + */ +unsigned long dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name); + +#endif /* __dpu_kms_H__ */ |