linux/drivers/gpu/drm/sun4i/sun4i_tcon.h
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   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
 218struct sun4i_tcon;
 219
 220struct 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
 228        /* callback to handle tcon muxing options */
 229        int     (*set_mux)(struct sun4i_tcon *, const struct drm_encoder *);
 230};
 231
 232struct sun4i_tcon {
 233        struct device                   *dev;
 234        struct drm_device               *drm;
 235        struct regmap                   *regs;
 236
 237        /* Main bus clock */
 238        struct clk                      *clk;
 239
 240        /* Clocks for the TCON channels */
 241        struct clk                      *sclk0;
 242        struct clk                      *sclk1;
 243
 244        /* Possible mux for the LVDS clock */
 245        struct clk                      *lvds_pll;
 246
 247        /* Pixel clock */
 248        struct clk                      *dclk;
 249        u8                              dclk_max_div;
 250        u8                              dclk_min_div;
 251
 252        /* Reset control */
 253        struct reset_control            *lcd_rst;
 254        struct reset_control            *lvds_rst;
 255
 256        struct drm_panel                *panel;
 257
 258        /* Platform adjustments */
 259        const struct sun4i_tcon_quirks  *quirks;
 260
 261        /* Associated crtc */
 262        struct sun4i_crtc               *crtc;
 263
 264        int                             id;
 265
 266        /* TCON list management */
 267        struct list_head                list;
 268};
 269
 270struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node);
 271struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
 272
 273void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
 274void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
 275                         const struct drm_encoder *encoder,
 276                         const struct drm_display_mode *mode);
 277void sun4i_tcon_set_status(struct sun4i_tcon *crtc,
 278                           const struct drm_encoder *encoder, bool enable);
 279
 280extern const struct of_device_id sun4i_tcon_of_table[];
 281
 282#endif /* __SUN4I_TCON_H__ */
 283