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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2015 Free Electrons
4 * Copyright (C) 2015 NextThing Co
5 *
6 * Boris Brezillon <boris.brezillon@free-electrons.com>
7 * Maxime Ripard <maxime.ripard@free-electrons.com>
8 */
9
10#ifndef __SUN4I_TCON_H__
11#define __SUN4I_TCON_H__
12
13#include <drm/drm_crtc.h>
14
15#include <linux/kernel.h>
16#include <linux/list.h>
17#include <linux/reset.h>
18
19#define SUN4I_TCON_GCTL_REG 0x0
20#define SUN4I_TCON_GCTL_TCON_ENABLE BIT(31)
21#define SUN4I_TCON_GCTL_IOMAP_MASK BIT(0)
22#define SUN4I_TCON_GCTL_IOMAP_TCON1 (1 << 0)
23#define SUN4I_TCON_GCTL_IOMAP_TCON0 (0 << 0)
24
25#define SUN4I_TCON_GINT0_REG 0x4
26#define SUN4I_TCON_GINT0_VBLANK_ENABLE(pipe) BIT(31 - (pipe))
27#define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_ENABLE BIT(27)
28#define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_ENABLE BIT(26)
29#define SUN4I_TCON_GINT0_VBLANK_INT(pipe) BIT(15 - (pipe))
30#define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT BIT(11)
31#define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_INT BIT(10)
32
33#define SUN4I_TCON_GINT1_REG 0x8
34
35#define SUN4I_TCON_FRM_CTL_REG 0x10
36#define SUN4I_TCON0_FRM_CTL_EN BIT(31)
37#define SUN4I_TCON0_FRM_CTL_MODE_R BIT(6)
38#define SUN4I_TCON0_FRM_CTL_MODE_G BIT(5)
39#define SUN4I_TCON0_FRM_CTL_MODE_B BIT(4)
40
41#define SUN4I_TCON0_FRM_SEED_PR_REG 0x14
42#define SUN4I_TCON0_FRM_SEED_PG_REG 0x18
43#define SUN4I_TCON0_FRM_SEED_PB_REG 0x1c
44#define SUN4I_TCON0_FRM_SEED_LR_REG 0x20
45#define SUN4I_TCON0_FRM_SEED_LG_REG 0x24
46#define SUN4I_TCON0_FRM_SEED_LB_REG 0x28
47#define SUN4I_TCON0_FRM_TBL0_REG 0x2c
48#define SUN4I_TCON0_FRM_TBL1_REG 0x30
49#define SUN4I_TCON0_FRM_TBL2_REG 0x34
50#define SUN4I_TCON0_FRM_TBL3_REG 0x38
51
52#define SUN4I_TCON0_CTL_REG 0x40
53#define SUN4I_TCON0_CTL_TCON_ENABLE BIT(31)
54#define SUN4I_TCON0_CTL_IF_MASK GENMASK(25, 24)
55#define SUN4I_TCON0_CTL_IF_8080 (1 << 24)
56#define SUN4I_TCON0_CTL_CLK_DELAY_MASK GENMASK(8, 4)
57#define SUN4I_TCON0_CTL_CLK_DELAY(delay) ((delay << 4) & SUN4I_TCON0_CTL_CLK_DELAY_MASK)
58#define SUN4I_TCON0_CTL_SRC_SEL_MASK GENMASK(2, 0)
59
60#define SUN4I_TCON0_DCLK_REG 0x44
61#define SUN4I_TCON0_DCLK_GATE_BIT (31)
62#define SUN4I_TCON0_DCLK_DIV_SHIFT (0)
63#define SUN4I_TCON0_DCLK_DIV_WIDTH (7)
64
65#define SUN4I_TCON0_BASIC0_REG 0x48
66#define SUN4I_TCON0_BASIC0_X(width) ((((width) - 1) & 0xfff) << 16)
67#define SUN4I_TCON0_BASIC0_Y(height) (((height) - 1) & 0xfff)
68
69#define SUN4I_TCON0_BASIC1_REG 0x4c
70#define SUN4I_TCON0_BASIC1_H_TOTAL(total) ((((total) - 1) & 0x1fff) << 16)
71#define SUN4I_TCON0_BASIC1_H_BACKPORCH(bp) (((bp) - 1) & 0xfff)
72
73#define SUN4I_TCON0_BASIC2_REG 0x50
74#define SUN4I_TCON0_BASIC2_V_TOTAL(total) (((total) & 0x1fff) << 16)
75#define SUN4I_TCON0_BASIC2_V_BACKPORCH(bp) (((bp) - 1) & 0xfff)
76
77#define SUN4I_TCON0_BASIC3_REG 0x54
78#define SUN4I_TCON0_BASIC3_H_SYNC(width) ((((width) - 1) & 0x7ff) << 16)
79#define SUN4I_TCON0_BASIC3_V_SYNC(height) (((height) - 1) & 0x7ff)
80
81#define SUN4I_TCON0_HV_IF_REG 0x58
82
83#define SUN4I_TCON0_CPU_IF_REG 0x60
84#define SUN4I_TCON0_CPU_IF_MODE_MASK GENMASK(31, 28)
85#define SUN4I_TCON0_CPU_IF_MODE_DSI (1 << 28)
86#define SUN4I_TCON0_CPU_IF_TRI_FIFO_FLUSH BIT(16)
87#define SUN4I_TCON0_CPU_IF_TRI_FIFO_EN BIT(2)
88#define SUN4I_TCON0_CPU_IF_TRI_EN BIT(0)
89
90#define SUN4I_TCON0_CPU_WR_REG 0x64
91#define SUN4I_TCON0_CPU_RD0_REG 0x68
92#define SUN4I_TCON0_CPU_RDA_REG 0x6c
93#define SUN4I_TCON0_TTL0_REG 0x70
94#define SUN4I_TCON0_TTL1_REG 0x74
95#define SUN4I_TCON0_TTL2_REG 0x78
96#define SUN4I_TCON0_TTL3_REG 0x7c
97#define SUN4I_TCON0_TTL4_REG 0x80
98
99#define SUN4I_TCON0_LVDS_IF_REG 0x84
100#define SUN4I_TCON0_LVDS_IF_EN BIT(31)
101#define SUN4I_TCON0_LVDS_IF_BITWIDTH_MASK BIT(26)
102#define SUN4I_TCON0_LVDS_IF_BITWIDTH_18BITS (1 << 26)
103#define SUN4I_TCON0_LVDS_IF_BITWIDTH_24BITS (0 << 26)
104#define SUN4I_TCON0_LVDS_IF_CLK_SEL_MASK BIT(20)
105#define SUN4I_TCON0_LVDS_IF_CLK_SEL_TCON0 (1 << 20)
106#define SUN4I_TCON0_LVDS_IF_CLK_POL_MASK BIT(4)
107#define SUN4I_TCON0_LVDS_IF_CLK_POL_NORMAL (1 << 4)
108#define SUN4I_TCON0_LVDS_IF_CLK_POL_INV (0 << 4)
109#define SUN4I_TCON0_LVDS_IF_DATA_POL_MASK GENMASK(3, 0)
110#define SUN4I_TCON0_LVDS_IF_DATA_POL_NORMAL (0xf)
111#define SUN4I_TCON0_LVDS_IF_DATA_POL_INV (0)
112
113#define SUN4I_TCON0_IO_POL_REG 0x88
114#define SUN4I_TCON0_IO_POL_DCLK_PHASE(phase) ((phase & 3) << 28)
115#define SUN4I_TCON0_IO_POL_DE_NEGATIVE BIT(27)
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 /* Platform adjustments */
257 const struct sun4i_tcon_quirks *quirks;
258
259 /* Associated crtc */
260 struct sun4i_crtc *crtc;
261
262 int id;
263
264 /* TCON list management */
265 struct list_head list;
266};
267
268struct drm_bridge *sun4i_tcon_find_bridge(struct device_node *node);
269struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
270
271void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
272void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
273 const struct drm_encoder *encoder,
274 const struct drm_display_mode *mode);
275void sun4i_tcon_set_status(struct sun4i_tcon *crtc,
276 const struct drm_encoder *encoder, bool enable);
277
278extern const struct of_device_id sun4i_tcon_of_table[];
279
280#endif /* __SUN4I_TCON_H__ */