drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
   3  */
   4
   5 #include "dpu_hwio.h"
   6 #include "dpu_hw_catalog.h"
   7 #include "dpu_hw_top.h"
   8 #include "dpu_kms.h"
   9
  10 #define SSPP_SPARE                        0x28
  11
  12 #define FLD_SPLIT_DISPLAY_CMD             BIT(1)
  13 #define FLD_SMART_PANEL_FREE_RUN          BIT(2)
  14 #define FLD_INTF_1_SW_TRG_MUX             BIT(4)
  15 #define FLD_INTF_2_SW_TRG_MUX             BIT(8)
  16 #define FLD_TE_LINE_INTER_WATERLEVEL_MASK 0xFFFF
  17
  18 #define DANGER_STATUS                     0x360
  19 #define SAFE_STATUS                       0x364
  20
  21 #define TE_LINE_INTERVAL                  0x3F4
  22
  23 #define TRAFFIC_SHAPER_EN                 BIT(31)
  24 #define TRAFFIC_SHAPER_RD_CLIENT(num)     (0x030 + (num * 4))
  25 #define TRAFFIC_SHAPER_WR_CLIENT(num)     (0x060 + (num * 4))
  26 #define TRAFFIC_SHAPER_FIXPOINT_FACTOR    4
  27
  28 #define MDP_WD_TIMER_0_CTL                0x380
  29 #define MDP_WD_TIMER_0_CTL2               0x384
  30 #define MDP_WD_TIMER_0_LOAD_VALUE         0x388
  31 #define MDP_WD_TIMER_1_CTL                0x390
  32 #define MDP_WD_TIMER_1_CTL2               0x394
  33 #define MDP_WD_TIMER_1_LOAD_VALUE         0x398
  34 #define MDP_WD_TIMER_2_CTL                0x420
  35 #define MDP_WD_TIMER_2_CTL2               0x424
  36 #define MDP_WD_TIMER_2_LOAD_VALUE         0x428
  37 #define MDP_WD_TIMER_3_CTL                0x430
  38 #define MDP_WD_TIMER_3_CTL2               0x434
  39 #define MDP_WD_TIMER_3_LOAD_VALUE         0x438
  40 #define MDP_WD_TIMER_4_CTL                0x440
  41 #define MDP_WD_TIMER_4_CTL2               0x444
  42 #define MDP_WD_TIMER_4_LOAD_VALUE         0x448
  43
  44 #define MDP_TICK_COUNT                    16
  45 #define XO_CLK_RATE                       19200
  46 #define MS_TICKS_IN_SEC                   1000
  47
  48 #define CALCULATE_WD_LOAD_VALUE(fps) \
  49         ((uint32_t)((MS_TICKS_IN_SEC * XO_CLK_RATE)/(MDP_TICK_COUNT * fps)))
  50
  51 #define DCE_SEL                           0x450
  52
  53 static void dpu_hw_setup_split_pipe(struct dpu_hw_mdp *mdp,
  54                 struct split_pipe_cfg *cfg)
  55 {
  56         struct dpu_hw_blk_reg_map *c;
  57         u32 upper_pipe = 0;
  58         u32 lower_pipe = 0;
  59
  60         if (!mdp || !cfg)
  61                 return;
  62
  63         c = &mdp->hw;
  64
  65         if (cfg->en) {
  66                 if (cfg->mode == INTF_MODE_CMD) {
  67                         lower_pipe = FLD_SPLIT_DISPLAY_CMD;
  68                         /* interface controlling sw trigger */
  69                         if (cfg->intf == INTF_2)
  70                                 lower_pipe |= FLD_INTF_1_SW_TRG_MUX;
  71                         else
  72                                 lower_pipe |= FLD_INTF_2_SW_TRG_MUX;
  73                         upper_pipe = lower_pipe;
  74                 } else {
  75                         if (cfg->intf == INTF_2) {
  76                                 lower_pipe = FLD_INTF_1_SW_TRG_MUX;
  77                                 upper_pipe = FLD_INTF_2_SW_TRG_MUX;
  78                         } else {
  79                                 lower_pipe = FLD_INTF_2_SW_TRG_MUX;
  80                                 upper_pipe = FLD_INTF_1_SW_TRG_MUX;
  81                         }
  82                 }
  83         }
  84
  85         DPU_REG_WRITE(c, SSPP_SPARE, cfg->split_flush_en ? 0x1 : 0x0);
  86         DPU_REG_WRITE(c, SPLIT_DISPLAY_LOWER_PIPE_CTRL, lower_pipe);
  87         DPU_REG_WRITE(c, SPLIT_DISPLAY_UPPER_PIPE_CTRL, upper_pipe);
  88         DPU_REG_WRITE(c, SPLIT_DISPLAY_EN, cfg->en & 0x1);
  89 }
  90
  91 static bool dpu_hw_setup_clk_force_ctrl(struct dpu_hw_mdp *mdp,
  92                 enum dpu_clk_ctrl_type clk_ctrl, bool enable)
  93 {
  94         struct dpu_hw_blk_reg_map *c;
  95         u32 reg_off, bit_off;
  96         u32 reg_val, new_val;
  97         bool clk_forced_on;
  98
  99         if (!mdp)
 100                 return false;
 101
 102         c = &mdp->hw;
 103
 104         if (clk_ctrl <= DPU_CLK_CTRL_NONE || clk_ctrl >= DPU_CLK_CTRL_MAX)
 105                 return false;
 106
 107         reg_off = mdp->caps->clk_ctrls[clk_ctrl].reg_off;
 108         bit_off = mdp->caps->clk_ctrls[clk_ctrl].bit_off;
 109
 110         reg_val = DPU_REG_READ(c, reg_off);
 111
 112         if (enable)
 113                 new_val = reg_val | BIT(bit_off);
 114         else
 115                 new_val = reg_val & ~BIT(bit_off);
 116
 117         DPU_REG_WRITE(c, reg_off, new_val);
 118
 119         clk_forced_on = !(reg_val & BIT(bit_off));
 120
 121         return clk_forced_on;
 122 }
 123
 124
 125 static void dpu_hw_get_danger_status(struct dpu_hw_mdp *mdp,
 126                 struct dpu_danger_safe_status *status)
 127 {
 128         struct dpu_hw_blk_reg_map *c;
 129         u32 value;
 130
 131         if (!mdp || !status)
 132                 return;
 133
 134         c = &mdp->hw;
 135
 136         value = DPU_REG_READ(c, DANGER_STATUS);
 137         status->mdp = (value >> 0) & 0x3;
 138         status->sspp[SSPP_VIG0] = (value >> 4) & 0x3;
 139         status->sspp[SSPP_VIG1] = (value >> 6) & 0x3;
 140         status->sspp[SSPP_VIG2] = (value >> 8) & 0x3;
 141         status->sspp[SSPP_VIG3] = (value >> 10) & 0x3;
 142         status->sspp[SSPP_RGB0] = (value >> 12) & 0x3;
 143         status->sspp[SSPP_RGB1] = (value >> 14) & 0x3;
 144         status->sspp[SSPP_RGB2] = (value >> 16) & 0x3;
 145         status->sspp[SSPP_RGB3] = (value >> 18) & 0x3;
 146         status->sspp[SSPP_DMA0] = (value >> 20) & 0x3;
 147         status->sspp[SSPP_DMA1] = (value >> 22) & 0x3;
 148         status->sspp[SSPP_DMA2] = (value >> 28) & 0x3;
 149         status->sspp[SSPP_DMA3] = (value >> 30) & 0x3;
 150         status->sspp[SSPP_CURSOR0] = (value >> 24) & 0x3;
 151         status->sspp[SSPP_CURSOR1] = (value >> 26) & 0x3;
 152 }
 153
 154 static void dpu_hw_setup_vsync_source(struct dpu_hw_mdp *mdp,
 155                 struct dpu_vsync_source_cfg *cfg)
 156 {
 157         struct dpu_hw_blk_reg_map *c;
 158         u32 reg, wd_load_value, wd_ctl, wd_ctl2, i;
 159         static const u32 pp_offset[PINGPONG_MAX] = {0xC, 0x8, 0x4, 0x13, 0x18};
 160
 161         if (!mdp || !cfg || (cfg->pp_count > ARRAY_SIZE(cfg->ppnumber)))
 162                 return;
 163
 164         c = &mdp->hw;
 165         reg = DPU_REG_READ(c, MDP_VSYNC_SEL);
 166         for (i = 0; i < cfg->pp_count; i++) {
 167                 int pp_idx = cfg->ppnumber[i] - PINGPONG_0;
 168
 169                 if (pp_idx >= ARRAY_SIZE(pp_offset))
 170                         continue;
 171
 172                 reg &= ~(0xf << pp_offset[pp_idx]);
 173                 reg |= (cfg->vsync_source & 0xf) << pp_offset[pp_idx];
 174         }
 175         DPU_REG_WRITE(c, MDP_VSYNC_SEL, reg);
 176
 177         if (cfg->vsync_source >= DPU_VSYNC_SOURCE_WD_TIMER_4 &&
 178                         cfg->vsync_source <= DPU_VSYNC_SOURCE_WD_TIMER_0) {
 179                 switch (cfg->vsync_source) {
 180                 case DPU_VSYNC_SOURCE_WD_TIMER_4:
 181                         wd_load_value = MDP_WD_TIMER_4_LOAD_VALUE;
 182                         wd_ctl = MDP_WD_TIMER_4_CTL;
 183                         wd_ctl2 = MDP_WD_TIMER_4_CTL2;
 184                         break;
 185                 case DPU_VSYNC_SOURCE_WD_TIMER_3:
 186                         wd_load_value = MDP_WD_TIMER_3_LOAD_VALUE;
 187                         wd_ctl = MDP_WD_TIMER_3_CTL;
 188                         wd_ctl2 = MDP_WD_TIMER_3_CTL2;
 189                         break;
 190                 case DPU_VSYNC_SOURCE_WD_TIMER_2:
 191                         wd_load_value = MDP_WD_TIMER_2_LOAD_VALUE;
 192                         wd_ctl = MDP_WD_TIMER_2_CTL;
 193                         wd_ctl2 = MDP_WD_TIMER_2_CTL2;
 194                         break;
 195                 case DPU_VSYNC_SOURCE_WD_TIMER_1:
 196                         wd_load_value = MDP_WD_TIMER_1_LOAD_VALUE;
 197                         wd_ctl = MDP_WD_TIMER_1_CTL;
 198                         wd_ctl2 = MDP_WD_TIMER_1_CTL2;
 199                         break;
 200                 case DPU_VSYNC_SOURCE_WD_TIMER_0:
 201                 default:
 202                         wd_load_value = MDP_WD_TIMER_0_LOAD_VALUE;
 203                         wd_ctl = MDP_WD_TIMER_0_CTL;
 204                         wd_ctl2 = MDP_WD_TIMER_0_CTL2;
 205                         break;
 206                 }
 207
 208                 DPU_REG_WRITE(c, wd_load_value,
 209                         CALCULATE_WD_LOAD_VALUE(cfg->frame_rate));
 210
 211                 DPU_REG_WRITE(c, wd_ctl, BIT(0)); /* clear timer */
 212                 reg = DPU_REG_READ(c, wd_ctl2);
 213                 reg |= BIT(8);          /* enable heartbeat timer */
 214                 reg |= BIT(0);          /* enable WD timer */
 215                 DPU_REG_WRITE(c, wd_ctl2, reg);
 216
 217                 /* make sure that timers are enabled/disabled for vsync state */
 218                 wmb();
 219         }
 220 }
 221
 222 static void dpu_hw_get_safe_status(struct dpu_hw_mdp *mdp,
 223                 struct dpu_danger_safe_status *status)
 224 {
 225         struct dpu_hw_blk_reg_map *c;
 226         u32 value;
 227
 228         if (!mdp || !status)
 229                 return;
 230
 231         c = &mdp->hw;
 232
 233         value = DPU_REG_READ(c, SAFE_STATUS);
 234         status->mdp = (value >> 0) & 0x1;
 235         status->sspp[SSPP_VIG0] = (value >> 4) & 0x1;
 236         status->sspp[SSPP_VIG1] = (value >> 6) & 0x1;
 237         status->sspp[SSPP_VIG2] = (value >> 8) & 0x1;
 238         status->sspp[SSPP_VIG3] = (value >> 10) & 0x1;
 239         status->sspp[SSPP_RGB0] = (value >> 12) & 0x1;
 240         status->sspp[SSPP_RGB1] = (value >> 14) & 0x1;
 241         status->sspp[SSPP_RGB2] = (value >> 16) & 0x1;
 242         status->sspp[SSPP_RGB3] = (value >> 18) & 0x1;
 243         status->sspp[SSPP_DMA0] = (value >> 20) & 0x1;
 244         status->sspp[SSPP_DMA1] = (value >> 22) & 0x1;
 245         status->sspp[SSPP_DMA2] = (value >> 28) & 0x1;
 246         status->sspp[SSPP_DMA3] = (value >> 30) & 0x1;
 247         status->sspp[SSPP_CURSOR0] = (value >> 24) & 0x1;
 248         status->sspp[SSPP_CURSOR1] = (value >> 26) & 0x1;
 249 }
 250
 251 static void dpu_hw_intf_audio_select(struct dpu_hw_mdp *mdp)
 252 {
 253         struct dpu_hw_blk_reg_map *c;
 254
 255         if (!mdp)
 256                 return;
 257
 258         c = &mdp->hw;
 259
 260         DPU_REG_WRITE(c, HDMI_DP_CORE_SELECT, 0x1);
 261 }
 262
 263 static void _setup_mdp_ops(struct dpu_hw_mdp_ops *ops,
 264                 unsigned long cap)
 265 {
 266         ops->setup_split_pipe = dpu_hw_setup_split_pipe;
 267         ops->setup_clk_force_ctrl = dpu_hw_setup_clk_force_ctrl;
 268         ops->get_danger_status = dpu_hw_get_danger_status;
 269         ops->setup_vsync_source = dpu_hw_setup_vsync_source;
 270         ops->get_safe_status = dpu_hw_get_safe_status;
 271         ops->intf_audio_select = dpu_hw_intf_audio_select;
 272 }
 273
 274 static const struct dpu_mdp_cfg *_top_offset(enum dpu_mdp mdp,
 275                 const struct dpu_mdss_cfg *m,
 276                 void __iomem *addr,
 277                 struct dpu_hw_blk_reg_map *b)
 278 {
 279         int i;
 280
 281         if (!m || !addr || !b)
 282                 return ERR_PTR(-EINVAL);
 283
 284         for (i = 0; i < m->mdp_count; i++) {
 285                 if (mdp == m->mdp[i].id) {
 286                         b->base_off = addr;
 287                         b->blk_off = m->mdp[i].base;
 288                         b->length = m->mdp[i].len;
 289                         b->hwversion = m->hwversion;
 290                         b->log_mask = DPU_DBG_MASK_TOP;
 291                         return &m->mdp[i];
 292                 }
 293         }
 294
 295         return ERR_PTR(-EINVAL);
 296 }
 297
 298 static struct dpu_hw_blk_ops dpu_hw_ops;
 299
 300 struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
 301                 void __iomem *addr,
 302                 const struct dpu_mdss_cfg *m)
 303 {
 304         struct dpu_hw_mdp *mdp;
 305         const struct dpu_mdp_cfg *cfg;
 306
 307         if (!addr || !m)
 308                 return ERR_PTR(-EINVAL);
 309
 310         mdp = kzalloc(sizeof(*mdp), GFP_KERNEL);
 311         if (!mdp)
 312                 return ERR_PTR(-ENOMEM);
 313
 314         cfg = _top_offset(idx, m, addr, &mdp->hw);
 315         if (IS_ERR_OR_NULL(cfg)) {
 316                 kfree(mdp);
 317                 return ERR_PTR(-EINVAL);
 318         }
 319
 320         /*
 321          * Assign ops
 322          */
 323         mdp->idx = idx;
 324         mdp->caps = cfg;
 325         _setup_mdp_ops(&mdp->ops, mdp->caps->features);
 326
 327         dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx, &dpu_hw_ops);
 328
 329         return mdp;
 330 }
 331
 332 void dpu_hw_mdp_destroy(struct dpu_hw_mdp *mdp)
 333 {
 334         if (mdp)
 335                 dpu_hw_blk_destroy(&mdp->base);
 336         kfree(mdp);
 337 }
 338