summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/tilcdc/tilcdc_regs.h
blob: 5048ebb86835043d263b3ee214fd888e92f8476a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/*
 * Copyright (C) 2012 Texas Instruments
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __TILCDC_REGS_H__
#define __TILCDC_REGS_H__

/* LCDC register definitions, based on da8xx-fb */

#include <linux/bitops.h>

#include "tilcdc_drv.h"

/* LCDC Status Register */
#define LCDC_END_OF_FRAME1                       BIT(9)
#define LCDC_END_OF_FRAME0                       BIT(8)
#define LCDC_PL_LOAD_DONE                        BIT(6)
#define LCDC_FIFO_UNDERFLOW                      BIT(5)
#define LCDC_SYNC_LOST                           BIT(2)
#define LCDC_FRAME_DONE                          BIT(0)

/* LCDC DMA Control Register */
#define LCDC_DMA_BURST_SIZE(x)                   ((x) << 4)
#define LCDC_DMA_BURST_SIZE_MASK                 ((0x7) << 4)
#define LCDC_DMA_BURST_1                         0x0
#define LCDC_DMA_BURST_2                         0x1
#define LCDC_DMA_BURST_4                         0x2
#define LCDC_DMA_BURST_8                         0x3
#define LCDC_DMA_BURST_16                        0x4
#define LCDC_DMA_FIFO_THRESHOLD(x)               ((x) << 8)
#define LCDC_DMA_FIFO_THRESHOLD_MASK             ((0x3) << 8)
#define LCDC_V1_END_OF_FRAME_INT_ENA             BIT(2)
#define LCDC_V2_END_OF_FRAME0_INT_ENA            BIT(8)
#define LCDC_V2_END_OF_FRAME1_INT_ENA            BIT(9)
#define LCDC_DUAL_FRAME_BUFFER_ENABLE            BIT(0)

/* LCDC Control Register */
#define LCDC_CLK_DIVISOR(x)                      ((x) << 8)
#define LCDC_CLK_DIVISOR_MASK                    ((0xFF) << 8)
#define LCDC_RASTER_MODE                         0x01

/* LCDC Raster Control Register */
#define LCDC_PALETTE_LOAD_MODE(x)                ((x) << 20)
#define LCDC_PALETTE_LOAD_MODE_MASK              ((0x3) << 20)
#define PALETTE_AND_DATA                         0x00
#define PALETTE_ONLY                             0x01
#define DATA_ONLY                                0x02

#define LCDC_MONO_8BIT_MODE                      BIT(9)
#define LCDC_RASTER_ORDER                        BIT(8)
#define LCDC_TFT_MODE                            BIT(7)
#define LCDC_V1_UNDERFLOW_INT_ENA                BIT(6)
#define LCDC_V2_UNDERFLOW_INT_ENA                BIT(5)
#define LCDC_V1_PL_INT_ENA                       BIT(4)
#define LCDC_V2_PL_INT_ENA                       BIT(6)
#define LCDC_V1_SYNC_LOST_INT_ENA                BIT(5)
#define LCDC_V1_FRAME_DONE_INT_ENA               BIT(3)
#define LCDC_MONOCHROME_MODE                     BIT(1)
#define LCDC_RASTER_ENABLE                       BIT(0)
#define LCDC_TFT_ALT_ENABLE                      BIT(23)
#define LCDC_STN_565_ENABLE                      BIT(24)
#define LCDC_V2_DMA_CLK_EN                       BIT(2)
#define LCDC_V2_LIDD_CLK_EN                      BIT(1)
#define LCDC_V2_CORE_CLK_EN                      BIT(0)
#define LCDC_V2_LPP_B10                          26
#define LCDC_V2_TFT_24BPP_MODE                   BIT(25)
#define LCDC_V2_TFT_24BPP_UNPACK                 BIT(26)

/* LCDC Raster Timing 2 Register */
#define LCDC_AC_BIAS_TRANSITIONS_PER_INT(x)      ((x) << 16)
#define LCDC_AC_BIAS_TRANSITIONS_PER_INT_MASK    ((0xF) << 16)
#define LCDC_AC_BIAS_FREQUENCY(x)                ((x) << 8)
#define LCDC_AC_BIAS_FREQUENCY_MASK              ((0xFF) << 8)
#define LCDC_SYNC_CTRL                           BIT(25)
#define LCDC_SYNC_EDGE                           BIT(24)
#define LCDC_INVERT_PIXEL_CLOCK                  BIT(22)
#define LCDC_INVERT_HSYNC                        BIT(21)
#define LCDC_INVERT_VSYNC                        BIT(20)
#define LCDC_LPP_B10                             BIT(26)

/* LCDC Block */
#define LCDC_PID_REG                             0x0
#define LCDC_CTRL_REG                            0x4
#define LCDC_STAT_REG                            0x8
#define LCDC_RASTER_CTRL_REG                     0x28
#define LCDC_RASTER_TIMING_0_REG                 0x2c
#define LCDC_RASTER_TIMING_1_REG                 0x30
#define LCDC_RASTER_TIMING_2_REG                 0x34
#define LCDC_DMA_CTRL_REG                        0x40
#define LCDC_DMA_FB_BASE_ADDR_0_REG              0x44
#define LCDC_DMA_FB_CEILING_ADDR_0_REG           0x48
#define LCDC_DMA_FB_BASE_ADDR_1_REG              0x4c
#define LCDC_DMA_FB_CEILING_ADDR_1_REG           0x50

/* Interrupt Registers available only in Version 2 */
#define LCDC_RAW_STAT_REG                        0x58
#define LCDC_MASKED_STAT_REG                     0x5c
#define LCDC_INT_ENABLE_SET_REG                  0x60
#define LCDC_INT_ENABLE_CLR_REG                  0x64
#define LCDC_END_OF_INT_IND_REG                  0x68

/* Clock registers available only on Version 2 */
#define LCDC_CLK_ENABLE_REG                      0x6c
#define LCDC_CLK_RESET_REG                       0x70
#define LCDC_CLK_MAIN_RESET                      BIT(3)


/*
 * Helpers:
 */

static inline void tilcdc_write(struct drm_device *dev, u32 reg, u32 data)
{
	struct tilcdc_drm_private *priv = dev->dev_private;
	iowrite32(data, priv->mmio + reg);
}

static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
{
	struct tilcdc_drm_private *priv = dev->dev_private;
	volatile void __iomem *addr = priv->mmio + reg;

#if defined(iowrite64) && !defined(iowrite64_is_nonatomic)
	iowrite64(data, addr);
#else
	__iowmb();
	/* This compiles to strd (=64-bit write) on ARM7 */
	*(volatile u64 __force *)addr = __cpu_to_le64(data);
#endif
}

static inline u32 tilcdc_read(struct drm_device *dev, u32 reg)
{
	struct tilcdc_drm_private *priv = dev->dev_private;
	return ioread32(priv->mmio + reg);
}

static inline void tilcdc_write_mask(struct drm_device *dev, u32 reg,
				     u32 val, u32 mask)
{
	tilcdc_write(dev, reg, (tilcdc_read(dev, reg) & ~mask) | (val & mask));
}

static inline void tilcdc_set(struct drm_device *dev, u32 reg, u32 mask)
{
	tilcdc_write(dev, reg, tilcdc_read(dev, reg) | mask);
}

static inline void tilcdc_clear(struct drm_device *dev, u32 reg, u32 mask)
{
	tilcdc_write(dev, reg, tilcdc_read(dev, reg) & ~mask);
}

/* the register to read/clear irqstatus differs between v1 and v2 of the IP */
static inline u32 tilcdc_irqstatus_reg(struct drm_device *dev)
{
	struct tilcdc_drm_private *priv = dev->dev_private;
	return (priv->rev == 2) ? LCDC_MASKED_STAT_REG : LCDC_STAT_REG;
}

static inline u32 tilcdc_read_irqstatus(struct drm_device *dev)
{
	return tilcdc_read(dev, tilcdc_irqstatus_reg(dev));
}

static inline void tilcdc_clear_irqstatus(struct drm_device *dev, u32 mask)
{
	tilcdc_write(dev, tilcdc_irqstatus_reg(dev), mask);
}

#endif /* __TILCDC_REGS_H__ */