Sachin Bhayare | eeb8889 | 2018-01-02 16:36:01 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2014-2016, 2018, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #ifndef MDSS_MDP_ROTATOR_INTERNAL_H |
| 15 | #define MDSS_MDP_ROTATOR_INTERNAL_H |
| 16 | |
| 17 | #include <linux/list.h> |
| 18 | #include <linux/sync.h> |
| 19 | #include <linux/file.h> |
| 20 | #include <linux/mdss_rotator.h> |
| 21 | #include <linux/sw_sync.h> |
| 22 | #include <linux/mutex.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/cdev.h> |
| 25 | |
| 26 | #include "mdss_mdp.h" |
| 27 | |
| 28 | /* |
| 29 | * Defining characteristics about rotation work, that has corresponding |
| 30 | * fmt and roi checks in open session |
| 31 | */ |
| 32 | #define MDSS_MDP_DEFINING_FLAG_BITS MDP_ROTATION_90 |
| 33 | |
| 34 | struct mdss_rot_entry; |
| 35 | struct mdss_rot_perf; |
| 36 | |
| 37 | enum mdss_rotator_clk_type { |
| 38 | MDSS_CLK_ROTATOR_AHB, |
| 39 | MDSS_CLK_ROTATOR_CORE, |
| 40 | MDSS_CLK_ROTATOR_END_IDX, |
| 41 | }; |
| 42 | |
| 43 | /* |
| 44 | * placeholder for performance profiling |
| 45 | * or debug support, not used currently |
| 46 | */ |
| 47 | struct mdss_rot_entry_cb_intf { |
| 48 | void (*pre_commit)(struct mdss_rot_entry *entry, void *data); |
| 49 | void (*post_commit)(struct mdss_rot_entry *entry, |
| 50 | void *data, int status); |
| 51 | }; |
| 52 | |
| 53 | struct mdss_rot_timeline { |
| 54 | struct mutex lock; |
| 55 | struct sw_sync_timeline *timeline; |
| 56 | u32 next_value; |
| 57 | char fence_name[32]; |
| 58 | }; |
| 59 | |
| 60 | struct mdss_rot_hw_resource { |
| 61 | struct mdss_mdp_ctl *ctl; |
| 62 | struct mdss_mdp_mixer *mixer; |
| 63 | struct mdss_mdp_pipe *pipe; |
| 64 | struct mdss_mdp_writeback *wb; |
| 65 | u32 pipe_id; |
| 66 | u32 wb_id; |
| 67 | |
| 68 | u32 pending_count; |
| 69 | struct mdss_rot_entry *workload; |
| 70 | }; |
| 71 | |
| 72 | struct mdss_rot_queue { |
| 73 | struct workqueue_struct *rot_work_queue; |
| 74 | struct mdss_rot_timeline timeline; |
| 75 | |
| 76 | struct mutex hw_lock; |
| 77 | struct mdss_rot_hw_resource *hw; |
| 78 | }; |
| 79 | |
| 80 | struct mdss_rot_entry_container { |
| 81 | struct list_head list; |
| 82 | u32 flags; |
| 83 | u32 count; |
| 84 | atomic_t pending_count; |
| 85 | struct mdss_rot_entry *entries; |
| 86 | }; |
| 87 | |
| 88 | struct mdss_rot_entry { |
| 89 | struct mdp_rotation_item item; |
| 90 | struct work_struct commit_work; |
| 91 | |
| 92 | struct mdss_rot_queue *queue; |
| 93 | struct mdss_rot_entry_container *request; |
| 94 | |
| 95 | struct mdss_mdp_data src_buf; |
| 96 | struct mdss_mdp_data dst_buf; |
| 97 | |
| 98 | struct sync_fence *input_fence; |
| 99 | |
| 100 | int output_fence_fd; |
| 101 | struct sync_fence *output_fence; |
| 102 | bool output_signaled; |
| 103 | |
| 104 | u32 dnsc_factor_w; |
| 105 | u32 dnsc_factor_h; |
| 106 | |
| 107 | struct mdss_rot_entry_cb_intf intf; |
| 108 | void *intf_data; |
| 109 | |
| 110 | struct mdss_rot_perf *perf; |
| 111 | bool work_assigned; /* Used when cleaning up work_distribution */ |
| 112 | }; |
| 113 | |
| 114 | struct mdss_rot_perf { |
| 115 | struct list_head list; |
| 116 | struct mdp_rotation_config config; |
| 117 | unsigned long clk_rate; |
| 118 | u64 bw; |
| 119 | struct mutex work_dis_lock; |
| 120 | u32 *work_distribution; |
| 121 | int last_wb_idx; /* last known wb index, used when above count is 0 */ |
| 122 | }; |
| 123 | |
| 124 | struct mdss_rot_file_private { |
| 125 | struct list_head list; |
| 126 | |
| 127 | struct mutex req_lock; |
| 128 | struct list_head req_list; |
| 129 | |
| 130 | struct mutex perf_lock; |
| 131 | struct list_head perf_list; |
| 132 | |
| 133 | struct file *file; |
| 134 | }; |
| 135 | |
| 136 | struct mdss_rot_bus_data_type { |
| 137 | struct msm_bus_scale_pdata *bus_scale_pdata; |
| 138 | u32 bus_hdl; |
| 139 | u32 curr_bw_uc_idx; |
| 140 | u64 curr_quota_val; |
| 141 | }; |
| 142 | |
| 143 | struct mdss_rot_mgr { |
| 144 | struct mutex lock; |
| 145 | |
| 146 | atomic_t device_suspended; |
| 147 | |
| 148 | u32 session_id_generator; |
| 149 | |
| 150 | struct platform_device *pdev; |
| 151 | |
| 152 | dev_t dev_num; |
| 153 | struct cdev cdev; |
| 154 | struct class *class; |
| 155 | struct device *device; |
| 156 | |
| 157 | /* |
| 158 | * mangaing rotation queues, depends on |
| 159 | * how many hw pipes available on the system |
| 160 | */ |
| 161 | int queue_count; |
| 162 | struct mdss_rot_queue *queues; |
| 163 | |
| 164 | struct mutex file_lock; |
| 165 | /* |
| 166 | * managing all the open file sessions to bw calculations, |
| 167 | * and resource clean up during suspend |
| 168 | */ |
| 169 | struct list_head file_list; |
| 170 | |
| 171 | struct mutex bus_lock; |
| 172 | u64 pending_close_bw_vote; |
| 173 | struct mdss_rot_bus_data_type data_bus; |
| 174 | struct mdss_rot_bus_data_type reg_bus; |
| 175 | |
| 176 | /* Module power is only used for regulator management */ |
| 177 | struct dss_module_power module_power; |
| 178 | bool regulator_enable; |
| 179 | |
| 180 | struct mutex clk_lock; |
| 181 | int res_ref_cnt; |
| 182 | struct clk *rot_clk[MDSS_CLK_ROTATOR_END_IDX]; |
| 183 | int rot_enable_clk_cnt; |
| 184 | |
| 185 | bool has_downscale; |
| 186 | bool has_ubwc; |
| 187 | }; |
| 188 | |
| 189 | #ifdef CONFIG_COMPAT |
| 190 | |
| 191 | /* open a rotation session */ |
| 192 | #define MDSS_ROTATION_OPEN32 \ |
| 193 | _IOWR(MDSS_ROTATOR_IOCTL_MAGIC, 1, compat_caddr_t) |
| 194 | |
| 195 | /* change the rotation session configuration */ |
| 196 | #define MDSS_ROTATION_CONFIG32 \ |
| 197 | _IOWR(MDSS_ROTATOR_IOCTL_MAGIC, 2, compat_caddr_t) |
| 198 | |
| 199 | /* queue the rotation request */ |
| 200 | #define MDSS_ROTATION_REQUEST32 \ |
| 201 | _IOWR(MDSS_ROTATOR_IOCTL_MAGIC, 3, compat_caddr_t) |
| 202 | |
| 203 | /* close a rotation session with the specified rotation session ID */ |
| 204 | #define MDSS_ROTATION_CLOSE32 \ |
| 205 | _IOW(MDSS_ROTATOR_IOCTL_MAGIC, 4, unsigned int) |
| 206 | |
| 207 | struct mdp_rotation_request32 { |
| 208 | uint32_t version; |
| 209 | uint32_t flags; |
| 210 | uint32_t count; |
| 211 | compat_caddr_t list; |
| 212 | uint32_t reserved[6]; |
| 213 | }; |
| 214 | #endif |
| 215 | |
| 216 | static inline int __compare_session_item_rect( |
| 217 | struct mdp_rotation_buf_info *s_rect, |
| 218 | struct mdp_rect *i_rect, uint32_t i_fmt, bool src) |
| 219 | { |
| 220 | if ((s_rect->width != i_rect->w) || (s_rect->height != i_rect->h) || |
| 221 | (s_rect->format != i_fmt)) { |
| 222 | pr_err("%s: session{%u,%u}f:%u mismatch from item{%u,%u}f:%u\n", |
| 223 | (src ? "src":"dst"), s_rect->width, s_rect->height, |
| 224 | s_rect->format, i_rect->w, i_rect->h, i_fmt); |
| 225 | return -EINVAL; |
| 226 | } |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * Compare all important flag bits associated with rotation between session |
| 232 | * config and item request. Format and roi validation is done during open |
| 233 | * session and is based certain defining bits. If these defining bits are |
| 234 | * different in item request, there is a possibility that rotation item |
| 235 | * is not a valid configuration. |
| 236 | */ |
| 237 | static inline int __compare_session_rotations(uint32_t cfg_flag, |
| 238 | uint32_t item_flag) |
| 239 | { |
| 240 | cfg_flag &= MDSS_MDP_DEFINING_FLAG_BITS; |
| 241 | item_flag &= MDSS_MDP_DEFINING_FLAG_BITS; |
| 242 | if (cfg_flag != item_flag) { |
| 243 | pr_err("Rotation degree request different from open session\n"); |
| 244 | return -EINVAL; |
| 245 | } |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | #endif |