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_VBLANK_INT(pipe)               BIT(15 - (pipe))
  32
  33 #define SUN4I_TCON_GINT1_REG                    0x8
  34 #define SUN4I_TCON_FRM_CTL_REG                  0x10
  35
  36 #define SUN4I_TCON0_CTL_REG                     0x40
  37 #define SUN4I_TCON0_CTL_TCON_ENABLE                     BIT(31)
  38 #define SUN4I_TCON0_CTL_CLK_DELAY_MASK                  GENMASK(8, 4)
  39 #define SUN4I_TCON0_CTL_CLK_DELAY(delay)                ((delay << 4) & SUN4I_TCON0_CTL_CLK_DELAY_MASK)
  40 #define SUN4I_TCON0_CTL_SRC_SEL_MASK                    GENMASK(2, 0)
  41
  42 #define SUN4I_TCON0_DCLK_REG                    0x44
  43 #define SUN4I_TCON0_DCLK_GATE_BIT                       (31)
  44 #define SUN4I_TCON0_DCLK_DIV_SHIFT                      (0)
  45 #define SUN4I_TCON0_DCLK_DIV_WIDTH                      (7)
  46
  47 #define SUN4I_TCON0_BASIC0_REG                  0x48
  48 #define SUN4I_TCON0_BASIC0_X(width)                     ((((width) - 1) & 0xfff) << 16)
  49 #define SUN4I_TCON0_BASIC0_Y(height)                    (((height) - 1) & 0xfff)
  50
  51 #define SUN4I_TCON0_BASIC1_REG                  0x4c
  52 #define SUN4I_TCON0_BASIC1_H_TOTAL(total)               ((((total) - 1) & 0x1fff) << 16)
  53 #define SUN4I_TCON0_BASIC1_H_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
  54
  55 #define SUN4I_TCON0_BASIC2_REG                  0x50
  56 #define SUN4I_TCON0_BASIC2_V_TOTAL(total)               (((total) & 0x1fff) << 16)
  57 #define SUN4I_TCON0_BASIC2_V_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
  58
  59 #define SUN4I_TCON0_BASIC3_REG                  0x54
  60 #define SUN4I_TCON0_BASIC3_H_SYNC(width)                ((((width) - 1) & 0x7ff) << 16)
  61 #define SUN4I_TCON0_BASIC3_V_SYNC(height)               (((height) - 1) & 0x7ff)
  62
  63 #define SUN4I_TCON0_HV_IF_REG                   0x58
  64 #define SUN4I_TCON0_CPU_IF_REG                  0x60
  65 #define SUN4I_TCON0_CPU_WR_REG                  0x64
  66 #define SUN4I_TCON0_CPU_RD0_REG                 0x68
  67 #define SUN4I_TCON0_CPU_RDA_REG                 0x6c
  68 #define SUN4I_TCON0_TTL0_REG                    0x70
  69 #define SUN4I_TCON0_TTL1_REG                    0x74
  70 #define SUN4I_TCON0_TTL2_REG                    0x78
  71 #define SUN4I_TCON0_TTL3_REG                    0x7c
  72 #define SUN4I_TCON0_TTL4_REG                    0x80
  73
  74 #define SUN4I_TCON0_LVDS_IF_REG                 0x84
  75 #define SUN4I_TCON0_LVDS_IF_EN                          BIT(31)
  76 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_MASK               BIT(26)
  77 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_18BITS             (1 << 26)
  78 #define SUN4I_TCON0_LVDS_IF_BITWIDTH_24BITS             (0 << 26)
  79 #define SUN4I_TCON0_LVDS_IF_CLK_SEL_MASK                BIT(20)
  80 #define SUN4I_TCON0_LVDS_IF_CLK_SEL_TCON0               (1 << 20)
  81 #define SUN4I_TCON0_LVDS_IF_CLK_POL_MASK                BIT(4)
  82 #define SUN4I_TCON0_LVDS_IF_CLK_POL_NORMAL              (1 << 4)
  83 #define SUN4I_TCON0_LVDS_IF_CLK_POL_INV                 (0 << 4)
  84 #define SUN4I_TCON0_LVDS_IF_DATA_POL_MASK               GENMASK(3, 0)
  85 #define SUN4I_TCON0_LVDS_IF_DATA_POL_NORMAL             (0xf)
  86 #define SUN4I_TCON0_LVDS_IF_DATA_POL_INV                (0)
  87
  88 #define SUN4I_TCON0_IO_POL_REG                  0x88
  89 #define SUN4I_TCON0_IO_POL_DCLK_PHASE(phase)            ((phase & 3) << 28)
  90 #define SUN4I_TCON0_IO_POL_HSYNC_POSITIVE               BIT(25)
  91 #define SUN4I_TCON0_IO_POL_VSYNC_POSITIVE               BIT(24)
  92
  93 #define SUN4I_TCON0_IO_TRI_REG                  0x8c
  94 #define SUN4I_TCON0_IO_TRI_HSYNC_DISABLE                BIT(25)
  95 #define SUN4I_TCON0_IO_TRI_VSYNC_DISABLE                BIT(24)
  96 #define SUN4I_TCON0_IO_TRI_DATA_PINS_DISABLE(pins)      GENMASK(pins, 0)
  97
  98 #define SUN4I_TCON1_CTL_REG                     0x90
  99 #define SUN4I_TCON1_CTL_TCON_ENABLE                     BIT(31)
 100 #define SUN4I_TCON1_CTL_INTERLACE_ENABLE                BIT(20)
 101 #define SUN4I_TCON1_CTL_CLK_DELAY_MASK                  GENMASK(8, 4)
 102 #define SUN4I_TCON1_CTL_CLK_DELAY(delay)                ((delay << 4) & SUN4I_TCON1_CTL_CLK_DELAY_MASK)
 103 #define SUN4I_TCON1_CTL_SRC_SEL_MASK                    GENMASK(1, 0)
 104
 105 #define SUN4I_TCON1_BASIC0_REG                  0x94
 106 #define SUN4I_TCON1_BASIC0_X(width)                     ((((width) - 1) & 0xfff) << 16)
 107 #define SUN4I_TCON1_BASIC0_Y(height)                    (((height) - 1) & 0xfff)
 108
 109 #define SUN4I_TCON1_BASIC1_REG                  0x98
 110 #define SUN4I_TCON1_BASIC1_X(width)                     ((((width) - 1) & 0xfff) << 16)
 111 #define SUN4I_TCON1_BASIC1_Y(height)                    (((height) - 1) & 0xfff)
 112
 113 #define SUN4I_TCON1_BASIC2_REG                  0x9c
 114 #define SUN4I_TCON1_BASIC2_X(width)                     ((((width) - 1) & 0xfff) << 16)
 115 #define SUN4I_TCON1_BASIC2_Y(height)                    (((height) - 1) & 0xfff)
 116
 117 #define SUN4I_TCON1_BASIC3_REG                  0xa0
 118 #define SUN4I_TCON1_BASIC3_H_TOTAL(total)               ((((total) - 1) & 0x1fff) << 16)
 119 #define SUN4I_TCON1_BASIC3_H_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
 120
 121 #define SUN4I_TCON1_BASIC4_REG                  0xa4
 122 #define SUN4I_TCON1_BASIC4_V_TOTAL(total)               (((total) & 0x1fff) << 16)
 123 #define SUN4I_TCON1_BASIC4_V_BACKPORCH(bp)              (((bp) - 1) & 0xfff)
 124
 125 #define SUN4I_TCON1_BASIC5_REG                  0xa8
 126 #define SUN4I_TCON1_BASIC5_H_SYNC(width)                ((((width) - 1) & 0x3ff) << 16)
 127 #define SUN4I_TCON1_BASIC5_V_SYNC(height)               (((height) - 1) & 0x3ff)
 128
 129 #define SUN4I_TCON1_IO_POL_REG                  0xf0
 130 #define SUN4I_TCON1_IO_TRI_REG                  0xf4
 131 #define SUN4I_TCON_CEU_CTL_REG                  0x100
 132 #define SUN4I_TCON_CEU_MUL_RR_REG               0x110
 133 #define SUN4I_TCON_CEU_MUL_RG_REG               0x114
 134 #define SUN4I_TCON_CEU_MUL_RB_REG               0x118
 135 #define SUN4I_TCON_CEU_ADD_RC_REG               0x11c
 136 #define SUN4I_TCON_CEU_MUL_GR_REG               0x120
 137 #define SUN4I_TCON_CEU_MUL_GG_REG               0x124
 138 #define SUN4I_TCON_CEU_MUL_GB_REG               0x128
 139 #define SUN4I_TCON_CEU_ADD_GC_REG               0x12c
 140 #define SUN4I_TCON_CEU_MUL_BR_REG               0x130
 141 #define SUN4I_TCON_CEU_MUL_BG_REG               0x134
 142 #define SUN4I_TCON_CEU_MUL_BB_REG               0x138
 143 #define SUN4I_TCON_CEU_ADD_BC_REG               0x13c
 144 #define SUN4I_TCON_CEU_RANGE_R_REG              0x140
 145 #define SUN4I_TCON_CEU_RANGE_G_REG              0x144
 146 #define SUN4I_TCON_CEU_RANGE_B_REG              0x148
 147 #define SUN4I_TCON_MUX_CTRL_REG                 0x200
 148
 149 #define SUN4I_TCON0_LVDS_ANA0_REG               0x220
 150 #define SUN6I_TCON0_LVDS_ANA0_EN_MB                     BIT(31)
 151 #define SUN6I_TCON0_LVDS_ANA0_EN_LDO                    BIT(30)
 152 #define SUN6I_TCON0_LVDS_ANA0_EN_DRVC                   BIT(24)
 153 #define SUN6I_TCON0_LVDS_ANA0_EN_DRVD(x)                (((x) & 0xf) << 20)
 154 #define SUN6I_TCON0_LVDS_ANA0_C(x)                      (((x) & 3) << 17)
 155 #define SUN6I_TCON0_LVDS_ANA0_V(x)                      (((x) & 3) << 8)
 156 #define SUN6I_TCON0_LVDS_ANA0_PD(x)                     (((x) & 3) << 4)
 157
 158 #define SUN4I_TCON1_FILL_CTL_REG                0x300
 159 #define SUN4I_TCON1_FILL_BEG0_REG               0x304
 160 #define SUN4I_TCON1_FILL_END0_REG               0x308
 161 #define SUN4I_TCON1_FILL_DATA0_REG              0x30c
 162 #define SUN4I_TCON1_FILL_BEG1_REG               0x310
 163 #define SUN4I_TCON1_FILL_END1_REG               0x314
 164 #define SUN4I_TCON1_FILL_DATA1_REG              0x318
 165 #define SUN4I_TCON1_FILL_BEG2_REG               0x31c
 166 #define SUN4I_TCON1_FILL_END2_REG               0x320
 167 #define SUN4I_TCON1_FILL_DATA2_REG              0x324
 168 #define SUN4I_TCON1_GAMMA_TABLE_REG             0x400
 169
 170 #define SUN4I_TCON_MAX_CHANNELS         2
 171
 172 struct sun4i_tcon;
 173
 174 struct sun4i_tcon_quirks {
 175         bool    has_channel_0;  /* a83t does not have channel 0 on second TCON */
 176         bool    has_channel_1;  /* a33 does not have channel 1 */
 177         bool    has_lvds_alt;   /* Does the LVDS clock have a parent other than the TCON clock? */
 178         bool    needs_de_be_mux; /* sun6i needs mux to select backend */
 179         bool    needs_edp_reset; /* a80 edp reset needed for tcon0 access */
 180         bool    supports_lvds;   /* Does the TCON support an LVDS output? */
 181
 182         /* callback to handle tcon muxing options */
 183         int     (*set_mux)(struct sun4i_tcon *, const struct drm_encoder *);
 184 };
 185
 186 struct sun4i_tcon {
 187         struct device                   *dev;
 188         struct drm_device               *drm;
 189         struct regmap                   *regs;
 190
 191         /* Main bus clock */
 192         struct clk                      *clk;
 193
 194         /* Clocks for the TCON channels */
 195         struct clk                      *sclk0;
 196         struct clk                      *sclk1;
 197
 198         /* Possible mux for the LVDS clock */
 199         struct clk                      *lvds_pll;
 200
 201         /* Pixel clock */
 202         struct clk                      *dclk;
 203         u8                              dclk_max_div;
 204         u8                              dclk_min_div;
 205
 206         /* Reset control */
 207         struct reset_control            *lcd_rst;
 208         struct reset_control            *lvds_rst;
 209
 210         struct drm_panel                *panel;
 211
 212         /* Platform adjustments */
 213         const struct sun4i_tcon_quirks  *quirks;
 214
 215         /* Associated crtc */
 216         struct sun4i_crtc               *crtc;
 217
 218         int                             id;
 219
 220         /* TCON list management */
 221         struct list_head                list;
 222 };
 223
 224 struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node);
 225 struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
 226
 227 void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
 228 void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
 229                          const struct drm_encoder *encoder,
 230                          const struct drm_display_mode *mode);
 231 void sun4i_tcon_set_status(struct sun4i_tcon *crtc,
 232                            const struct drm_encoder *encoder, bool enable);
 233
 234 extern const struct of_device_id sun4i_tcon_of_table[];
 235
 236 #endif /* __SUN4I_TCON_H__ */