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 | 290 |
1 files changed, 290 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 000000000000..66d466628e2b --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -0,0 +1,290 @@ +/* + * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __DPU_KMS_H__ +#define __DPU_KMS_H__ + +#include "msm_drv.h" +#include "msm_kms.h" +#include "msm_mmu.h" +#include "msm_gem.h" +#include "dpu_dbg.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_power_handle.h" +#include "dpu_irq.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 (unlikely(drm_debug & 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 (unlikely(drm_debug & 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)) + +#define DPU_NAME_SIZE 12 + +/* timeout in frames waiting for frame done */ +#define DPU_FRAME_DONE_TIMEOUT 60 + +/* + * struct dpu_irq_callback - IRQ callback handlers + * @list: list to callback + * @func: intr handler + * @arg: argument for the handler + */ +struct dpu_irq_callback { + struct list_head list; + void (*func)(void *arg, int irq_idx); + void *arg; +}; + +/** + * struct dpu_irq: IRQ structure contains callback registration info + * @total_irq: total number of irq_idx obtained from HW interrupts mapping + * @irq_cb_tbl: array of IRQ callbacks setting + * @enable_counts array of IRQ enable counts + * @cb_lock: callback lock + * @debugfs_file: debugfs file for irq statistics + */ +struct dpu_irq { + u32 total_irqs; + struct list_head *irq_cb_tbl; + atomic_t *enable_counts; + atomic_t *irq_counts; + spinlock_t cb_lock; + struct dentry *debugfs_file; +}; + +struct dpu_kms { + struct msm_kms base; + struct drm_device *dev; + int core_rev; + struct dpu_mdss_cfg *catalog; + + struct dpu_power_handle phandle; + struct dpu_power_client *core_client; + struct dpu_power_event *power_event; + + /* directory entry for debugfs */ + struct dentry *debugfs_root; + struct dentry *debugfs_danger; + struct dentry *debugfs_vbif; + + /* io/register spaces: */ + void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma; + unsigned long mmio_len, vbif_len[VBIF_MAX], reg_dma_len; + + struct regulator *vdd; + struct regulator *mmagic; + struct regulator *venus; + + struct dpu_hw_intr *hw_intr; + struct dpu_irq irq_obj; + + struct dpu_core_perf perf; + + /* saved atomic state during system suspend */ + struct drm_atomic_state *suspend_state; + bool suspend_block; + + 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 dss_module_power mp; +}; + +struct vsync_info { + u32 frame_count; + u32 line_count; +}; + +#define to_dpu_kms(x) container_of(x, struct dpu_kms, base) + +/* get struct msm_kms * from drm_device * */ +#define ddev_to_msm_kms(D) ((D) && (D)->dev_private ? \ + ((struct msm_drm_private *)((D)->dev_private))->kms : NULL) + +/** + * dpu_kms_is_suspend_state - whether or not the system is pm suspended + * @dev: Pointer to drm device + * Return: Suspend status + */ +static inline bool dpu_kms_is_suspend_state(struct drm_device *dev) +{ + if (!ddev_to_msm_kms(dev)) + return false; + + return to_dpu_kms(ddev_to_msm_kms(dev))->suspend_state != NULL; +} + +/** + * dpu_kms_is_suspend_blocked - whether or not commits are blocked due to pm + * suspend status + * @dev: Pointer to drm device + * Return: True if commits should be rejected due to pm suspend + */ +static inline bool dpu_kms_is_suspend_blocked(struct drm_device *dev) +{ + if (!dpu_kms_is_suspend_state(dev)) + return false; + + return to_dpu_kms(ddev_to_msm_kms(dev))->suspend_block; +} + +/** + * Debugfs functions - extra helper functions for debugfs support + * + * Main debugfs documentation is located at, + * + * Documentation/filesystems/debugfs.txt + * + * @dpu_debugfs_setup_regset32: Initialize data for dpu_debugfs_create_regset32 + * @dpu_debugfs_create_regset32: Create 32-bit register dump file + * @dpu_debugfs_get_root: Get root dentry for DPU_KMS's debugfs node + */ + +/** + * Companion structure for dpu_debugfs_create_regset32. Do not initialize the + * members of this structure explicitly; use dpu_debugfs_setup_regset32 instead. + */ +struct dpu_debugfs_regset32 { + uint32_t offset; + uint32_t blk_len; + struct dpu_kms *dpu_kms; +}; + +/** + * dpu_debugfs_setup_regset32 - Initialize register block definition for debugfs + * This function is meant to initialize dpu_debugfs_regset32 structures for use + * with dpu_debugfs_create_regset32. + * @regset: opaque register definition structure + * @offset: sub-block offset + * @length: sub-block length, in bytes + * @dpu_kms: pointer to dpu kms structure + */ +void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset, + uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms); + +/** + * 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. + * + * Similar to the related debugfs_create_regset32 API, the structure pointed to + * by regset needs to persist for the lifetime of the created file. The calling + * code is responsible for initialization/management of this structure. + * + * The structure pointed to by regset is meant to be opaque. Please use + * dpu_debugfs_setup_regset32 to initialize it. + * + * @name: File name within debugfs + * @mode: File mode within debugfs + * @parent: Parent directory entry within debugfs, can be NULL + * @regset: Pointer to persistent register block definition + * + * Return: dentry pointer for newly created file, use either debugfs_remove() + * or debugfs_remove_recursive() (on a parent directory) to remove the + * file + */ +void *dpu_debugfs_create_regset32(const char *name, umode_t mode, + void *parent, struct dpu_debugfs_regset32 *regset); + +/** + * 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); + +void dpu_kms_encoder_enable(struct drm_encoder *encoder); + +/** + * dpu_kms_get_clk_rate() - get the clock rate + * @dpu_kms: poiner to dpu_kms structure + * @clock_name: clock name to get the rate + * + * Return: current clock rate + */ +u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name); + +#endif /* __dpu_kms_H__ */ |