drivers/gpu/drm/sun4i/sun4i_tcon.h

   1 /*
   2  * Copyright (C) 2015 Free Electrons
   3  * Copyright (C) 2015 NextThing Co
   4  *
   5  * Boris Brezillon <boris.brezillon@free-electrons.com>
   6  * Maxime Ripard <maxime.ripard@free-electrons.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  */
  13
  14 #ifndef __SUN4I_TCON_H__
  15 #define __SUN4I_TCON_H__
  16
  17 #include <drm/drm_crtc.h>
  18
  19 #include <linux/kernel.h>
  20 #include <linux/list.h>
  21 #include <linux/reset.h>
  22
  23 #define SUN4I_TCON_GCTL_REG                     0x0
  24 #define SUN4I_TCON_GCTL_TCON_ENABLE                     BIT(31)
  25 #define SUN4I_TCON_GCTL_IOMAP_MASK                      BIT(0)
  26 #define SUN4I_TCON_GCTL_IOMAP_TCON1                     (1 << 0)
  27 #define SUN4I_TCON_GCTL_IOMAP_TCON0                     (0 << 0)
  28
  29 #define SUN4I_TCON_GINT0_REG                    0x4
  30 #define SUN4I_TCON_GINT0_VBLANK_ENABLE(pipe)            BIT(31 - (pipe))
  31 #define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_ENABLE        BIT(27)
  32 #define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_ENABLE       BIT(26)
  33 #define SUN4I_TCON_GINT0_VBLANK_INT(pipe)               BIT(15 - (pipe))
  34 #define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT           BIT(11)
  35 #define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_INT          BIT(10)
  36
  37 #define SUN4I_TCON_GINT1_REG                    0x8
  38
  39 #define SUN4I_TCON_FRM_CTL_REG                  0x10
  40 #define SUN4I_TCON_FRM_CTL_EN                           BIT(31)
  41
  42 #define SUN4I_TCON_FRM_SEED_PR_REG              0x14
  43 #define SUN4I_TCON_FRM_SEED_PG_REG              0x18
  44 #define SUN4I_TCON_FRM_SEED_PB_REG              0x1c
  45 #define SUN4I_TCON_FRM_SEED_LR_REG              0x20
  46 #define SUN4I_TCON_FRM_SEED_LG_REG              0x24
  47 #define SUN4I_TCON_FRM_SEED_LB_REG              0x28
  48 #define SUN4I_TCON_FRM_TBL0_REG                 0x2c
  49 #define SUN4I_TCON_FRM_TBL1_REG                 0x30
  50 #define SUN4I_TCON_FRM_TBL2_REG                 0x34
  51 #define SUN4I_TCON_FRM_TBL3_REG                 0x38
  52
  53 #define SUN4I_TCON0_CTL_REG                     0x40
  54 #define SUN4I_TCON0_CTL_TCON_ENABLE                     BIT(31)
  55 #define SUN4I_TCON0_CTL_IF_MASK                         GENMASK(25, 24)
  56 #define SUN4I_TCON0_CTL_IF_8080                         (1 << 24)
  57 #define SUN4I_TCON0_CTL_CLK_DELAY_MASK                  GENMASK(8, 4)
  58 #define SUN4I_TCON0_CTL_CLK_DELAY(delay)                ((delay << 4) & SUN4I_TCON0_CTL_CLK_DELAY_MASK)
  59 #define SUN4I_TCON0_CTL_SRC_SEL_MASK                    GENMASK(2, 0)
  60
  61 #define SUN4I_TCON0_DCLK_REG                    0x44
  62 #define SUN4I_TCON0_DCLK_GATE_BIT                       (31)
  63 #define SUN4I_TCON0_DCLK_DIV_SHIFT                      (0)
  64 #define SUN4I_TCON0_DCLK_DIV_WIDTH                      (7)
  65
  66 #define SUN4I_TCON0_BASIC0_REG                  0x48
  67 #define SUN4I_TCON0_BASIC0_X(width)                     ((((width) - 1) & 0xfff) << 16)
  68 #define SUN4I_TCON0_BASIC0_Y(height)                    (((height) - 1) & 0xfff)
  69
  70 #define SUN4I_TCON0_BASIC1_REG                  0x4c
  71 #define SUN4I_TCON0_BASIC1_H_TOTAL(total)               ((((total) - 1) & 0x1fff) << 16)
  72 #define SUN4I_TCON0_BASIC1_H_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
  73
  74 #define SUN4I_TCON0_BASIC2_REG                  0x50
  75 #define SUN4I_TCON0_BASIC2_V_TOTAL(total)               (((total) & 0x1fff) << 16)
  76 #define SUN4I_TCON0_BASIC2_V_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
  77
  78 #define SUN4I_TCON0_BASIC3_REG                  0x54
  79 #define SUN4I_TCON0_BASIC3_H_SYNC(width)                ((((width) - 1) & 0x7ff) << 16)
  80 #define SUN4I_TCON0_BASIC3_V_SYNC(height)               (((height) - 1) & 0x7ff)
  81
  82 #define SUN4I_TCON0_HV_IF_REG                   0x58
  83
  84 #define SUN4I_TCON0_CPU_IF_REG                  0x60
  85 #define SUN4I_TCON0_CPU_IF_MODE_MASK                    GENMASK(31, 28)
  86 #define SUN4I_TCON0_CPU_IF_MODE_DSI                     (1 << 28)
  87 #define SUN4I_TCON0_CPU_IF_TRI_FIFO_FLUSH               BIT(16)
  88 #define SUN4I_TCON0_CPU_IF_TRI_FIFO_EN                  BIT(2)
  89 #define SUN4I_TCON0_CPU_IF_TRI_EN                       BIT(0)
  90
  91 #define SUN4I_TCON0_CPU_WR_REG                  0x64
  92 #define SUN4I_TCON0_CPU_RD0_REG                 0x68
  93 #define SUN4I_TCON0_CPU_RDA_REG                 0x6c
  94 #define SUN4I_TCON0_TTL0_REG                    0x70
  95 #define SUN4I_TCON0_TTL1_REG                    0x74
  96 #define SUN4I_TCON0_TTL2_REG                    0x78
  97 #define SUN4I_TCON0_TTL3_REG                    0x7c
  98 #define SUN4I_TCON0_TTL4_REG                    0x80
  99
 100 #define SUN4I_TCON0_LVDS_IF_REG                 0x84
 101 #define SUN4I_TCON0_LVDS_IF_EN                          BIT(31)
 102 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_MASK               BIT(26)
 103 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_18BITS             (1 << 26)
 104 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_24BITS             (0 << 26)
 105 #define SUN4I_TCON0_LVDS_IF_CLK_SEL_MASK                BIT(20)
 106 #define SUN4I_TCON0_LVDS_IF_CLK_SEL_TCON0               (1 << 20)
 107 #define SUN4I_TCON0_LVDS_IF_CLK_POL_MASK                BIT(4)
 108 #define SUN4I_TCON0_LVDS_IF_CLK_POL_NORMAL              (1 << 4)
 109 #define SUN4I_TCON0_LVDS_IF_CLK_POL_INV                 (0 << 4)
 110 #define SUN4I_TCON0_LVDS_IF_DATA_POL_MASK               GENMASK(3, 0)
 111 #define SUN4I_TCON0_LVDS_IF_DATA_POL_NORMAL             (0xf)
 112 #define SUN4I_TCON0_LVDS_IF_DATA_POL_INV                (0)
 113
 114 #define SUN4I_TCON0_IO_POL_REG                  0x88
 115 #define SUN4I_TCON0_IO_POL_DCLK_PHASE(phase)            ((phase & 3) << 28)
 116 #define SUN4I_TCON0_IO_POL_HSYNC_POSITIVE               BIT(25)
 117 #define SUN4I_TCON0_IO_POL_VSYNC_POSITIVE               BIT(24)
 118
 119 #define SUN4I_TCON0_IO_TRI_REG                  0x8c
 120 #define SUN4I_TCON0_IO_TRI_HSYNC_DISABLE                BIT(25)
 121 #define SUN4I_TCON0_IO_TRI_VSYNC_DISABLE                BIT(24)
 122 #define SUN4I_TCON0_IO_TRI_DATA_PINS_DISABLE(pins)      GENMASK(pins, 0)
 123
 124 #define SUN4I_TCON1_CTL_REG                     0x90
 125 #define SUN4I_TCON1_CTL_TCON_ENABLE                     BIT(31)
 126 #define SUN4I_TCON1_CTL_INTERLACE_ENABLE                BIT(20)
 127 #define SUN4I_TCON1_CTL_CLK_DELAY_MASK                  GENMASK(8, 4)
 128 #define SUN4I_TCON1_CTL_CLK_DELAY(delay)                ((delay << 4) & SUN4I_TCON1_CTL_CLK_DELAY_MASK)
 129 #define SUN4I_TCON1_CTL_SRC_SEL_MASK                    GENMASK(1, 0)
 130
 131 #define SUN4I_TCON1_BASIC0_REG                  0x94
 132 #define SUN4I_TCON1_BASIC0_X(width)                     ((((width) - 1) & 0xfff) << 16)
 133 #define SUN4I_TCON1_BASIC0_Y(height)                    (((height) - 1) & 0xfff)
 134
 135 #define SUN4I_TCON1_BASIC1_REG                  0x98
 136 #define SUN4I_TCON1_BASIC1_X(width)                     ((((width) - 1) & 0xfff) << 16)
 137 #define SUN4I_TCON1_BASIC1_Y(height)                    (((height) - 1) & 0xfff)
 138
 139 #define SUN4I_TCON1_BASIC2_REG                  0x9c
 140 #define SUN4I_TCON1_BASIC2_X(width)                     ((((width) - 1) & 0xfff) << 16)
 141 #define SUN4I_TCON1_BASIC2_Y(height)                    (((height) - 1) & 0xfff)
 142
 143 #define SUN4I_TCON1_BASIC3_REG                  0xa0
 144 #define SUN4I_TCON1_BASIC3_H_TOTAL(total)               ((((total) - 1) & 0x1fff) << 16)
 145 #define SUN4I_TCON1_BASIC3_H_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
 146
 147 #define SUN4I_TCON1_BASIC4_REG                  0xa4
 148 #define SUN4I_TCON1_BASIC4_V_TOTAL(total)               (((total) & 0x1fff) << 16)
 149 #define SUN4I_TCON1_BASIC4_V_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
 150
 151 #define SUN4I_TCON1_BASIC5_REG                  0xa8
 152 #define SUN4I_TCON1_BASIC5_H_SYNC(width)                ((((width) - 1) & 0x3ff) << 16)
 153 #define SUN4I_TCON1_BASIC5_V_SYNC(height)               (((height) - 1) & 0x3ff)
 154
 155 #define SUN4I_TCON1_IO_POL_REG                  0xf0
 156 #define SUN4I_TCON1_IO_TRI_REG                  0xf4
 157
 158 #define SUN4I_TCON_ECC_FIFO_REG                 0xf8
 159 #define SUN4I_TCON_ECC_FIFO_EN                          BIT(3)
 160
 161 #define SUN4I_TCON_CEU_CTL_REG                  0x100
 162 #define SUN4I_TCON_CEU_MUL_RR_REG               0x110
 163 #define SUN4I_TCON_CEU_MUL_RG_REG               0x114
 164 #define SUN4I_TCON_CEU_MUL_RB_REG               0x118
 165 #define SUN4I_TCON_CEU_ADD_RC_REG               0x11c
 166 #define SUN4I_TCON_CEU_MUL_GR_REG               0x120
 167 #define SUN4I_TCON_CEU_MUL_GG_REG               0x124
 168 #define SUN4I_TCON_CEU_MUL_GB_REG               0x128
 169 #define SUN4I_TCON_CEU_ADD_GC_REG               0x12c
 170 #define SUN4I_TCON_CEU_MUL_BR_REG               0x130
 171 #define SUN4I_TCON_CEU_MUL_BG_REG               0x134
 172 #define SUN4I_TCON_CEU_MUL_BB_REG               0x138
 173 #define SUN4I_TCON_CEU_ADD_BC_REG               0x13c
 174 #define SUN4I_TCON_CEU_RANGE_R_REG              0x140
 175 #define SUN4I_TCON_CEU_RANGE_G_REG              0x144
 176 #define SUN4I_TCON_CEU_RANGE_B_REG              0x148
 177
 178 #define SUN4I_TCON0_CPU_TRI0_REG                0x160
 179 #define SUN4I_TCON0_CPU_TRI0_BLOCK_SPACE(space)         ((((space) - 1) & 0xfff) << 16)
 180 #define SUN4I_TCON0_CPU_TRI0_BLOCK_SIZE(size)           (((size) - 1) & 0xfff)
 181
 182 #define SUN4I_TCON0_CPU_TRI1_REG                0x164
 183 #define SUN4I_TCON0_CPU_TRI1_BLOCK_NUM(num)             (((num) - 1) & 0xffff)
 184
 185 #define SUN4I_TCON0_CPU_TRI2_REG                0x168
 186 #define SUN4I_TCON0_CPU_TRI2_START_DELAY(delay)         (((delay) & 0xffff) << 16)
 187 #define SUN4I_TCON0_CPU_TRI2_TRANS_START_SET(set)       ((set) & 0xfff)
 188
 189 #define SUN4I_TCON_SAFE_PERIOD_REG              0x1f0
 190 #define SUN4I_TCON_SAFE_PERIOD_NUM(num)                 (((num) & 0xfff) << 16)
 191 #define SUN4I_TCON_SAFE_PERIOD_MODE(mode)               ((mode) & 0x3)
 192
 193 #define SUN4I_TCON_MUX_CTRL_REG                 0x200
 194
 195 #define SUN4I_TCON0_LVDS_ANA0_REG               0x220
 196 #define SUN6I_TCON0_LVDS_ANA0_EN_MB                     BIT(31)
 197 #define SUN6I_TCON0_LVDS_ANA0_EN_LDO                    BIT(30)
 198 #define SUN6I_TCON0_LVDS_ANA0_EN_DRVC                   BIT(24)
 199 #define SUN6I_TCON0_LVDS_ANA0_EN_DRVD(x)                (((x) & 0xf) << 20)
 200 #define SUN6I_TCON0_LVDS_ANA0_C(x)                      (((x) & 3) << 17)
 201 #define SUN6I_TCON0_LVDS_ANA0_V(x)                      (((x) & 3) << 8)
 202 #define SUN6I_TCON0_LVDS_ANA0_PD(x)                     (((x) & 3) << 4)
 203
 204 #define SUN4I_TCON1_FILL_CTL_REG                0x300
 205 #define SUN4I_TCON1_FILL_BEG0_REG               0x304
 206 #define SUN4I_TCON1_FILL_END0_REG               0x308
 207 #define SUN4I_TCON1_FILL_DATA0_REG              0x30c
 208 #define SUN4I_TCON1_FILL_BEG1_REG               0x310
 209 #define SUN4I_TCON1_FILL_END1_REG               0x314
 210 #define SUN4I_TCON1_FILL_DATA1_REG              0x318
 211 #define SUN4I_TCON1_FILL_BEG2_REG               0x31c
 212 #define SUN4I_TCON1_FILL_END2_REG               0x320
 213 #define SUN4I_TCON1_FILL_DATA2_REG              0x324
 214 #define SUN4I_TCON1_GAMMA_TABLE_REG             0x400
 215
 216 #define SUN4I_TCON_MAX_CHANNELS         2
 217
 218 struct sun4i_tcon;
 219
 220 struct sun4i_tcon_quirks {
 221         bool    has_channel_0;  /* a83t does not have channel 0 on second TCON */
 222         bool    has_channel_1;  /* a33 does not have channel 1 */
 223         bool    has_lvds_alt;   /* Does the LVDS clock have a parent other than the TCON clock? */
 224         bool    needs_de_be_mux; /* sun6i needs mux to select backend */
 225         bool    needs_edp_reset; /* a80 edp reset needed for tcon0 access */
 226         bool    supports_lvds;   /* Does the TCON support an LVDS output? */
 227         u8      dclk_min_div;   /* minimum divider for TCON0 DCLK */
 228
 229         /* callback to handle tcon muxing options */
 230         int     (*set_mux)(struct sun4i_tcon *, const struct drm_encoder *);
 231 };
 232
 233 struct sun4i_tcon {
 234         struct device                   *dev;
 235         struct drm_device               *drm;
 236         struct regmap                   *regs;
 237
 238         /* Main bus clock */
 239         struct clk                      *clk;
 240
 241         /* Clocks for the TCON channels */
 242         struct clk                      *sclk0;
 243         struct clk                      *sclk1;
 244
 245         /* Possible mux for the LVDS clock */
 246         struct clk                      *lvds_pll;
 247
 248         /* Pixel clock */
 249         struct clk                      *dclk;
 250         u8                              dclk_max_div;
 251         u8                              dclk_min_div;
 252
 253         /* Reset control */
 254         struct reset_control            *lcd_rst;
 255         struct reset_control            *lvds_rst;
 256
 257         struct drm_panel                *panel;
 258
 259         /* Platform adjustments */
 260         const struct sun4i_tcon_quirks  *quirks;
 261
 262         /* Associated crtc */
 263         struct sun4i_crtc               *crtc;
 264
 265         int                             id;
 266
 267         /* TCON list management */
 268         struct list_head                list;
 269 };
 270
 271 struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node);
 272 struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
 273
 274 void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
 275 void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
 276                          const struct drm_encoder *encoder,
 277                          const struct drm_display_mode *mode);
 278 void sun4i_tcon_set_status(struct sun4i_tcon *crtc,
 279                            const struct drm_encoder *encoder, bool enable);
 280
 281 extern const struct of_device_id sun4i_tcon_of_table[];
 282
 283 #endif /* __SUN4I_TCON_H__ */