1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright 2010 Matt Turner.
4 * Copyright 2012 Red Hat
6 * Authors: Matthew Garrett
10 #ifndef __MGAG200_DRV_H__
11 #define __MGAG200_DRV_H__
13 #include <linux/i2c-algo-bit.h>
14 #include <linux/i2c.h>
16 #include <video/vga.h>
18 #include <drm/drm_encoder.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_gem.h>
21 #include <drm/drm_gem_shmem_helper.h>
22 #include <drm/drm_simple_kms_helper.h>
24 #include "mgag200_reg.h"
26 #define DRIVER_AUTHOR "Matthew Garrett"
28 #define DRIVER_NAME "mgag200"
29 #define DRIVER_DESC "MGA G200 SE"
30 #define DRIVER_DATE "20110418"
32 #define DRIVER_MAJOR 1
33 #define DRIVER_MINOR 0
34 #define DRIVER_PATCHLEVEL 0
36 #define RREG8(reg) ioread8(((void __iomem *)mdev->rmmio) + (reg))
37 #define WREG8(reg, v) iowrite8(v, ((void __iomem *)mdev->rmmio) + (reg))
38 #define RREG32(reg) ioread32(((void __iomem *)mdev->rmmio) + (reg))
39 #define WREG32(reg, v) iowrite32(v, ((void __iomem *)mdev->rmmio) + (reg))
41 #define MGA_BIOS_OFFSET 0x7ffc
43 #define ATTR_INDEX 0x1fc0
44 #define ATTR_DATA 0x1fc1
46 #define WREG_MISC(v) \
47 WREG8(MGA_MISC_OUT, v)
49 #define RREG_MISC(v) \
50 ((v) = RREG8(MGA_MISC_IN))
52 #define WREG_MISC_MASKED(v, mask) \
58 misc_ |= ((v) & mask_); \
62 #define WREG_ATTR(reg, v) \
65 WREG8(ATTR_INDEX, reg); \
66 WREG8(ATTR_DATA, v); \
69 #define RREG_SEQ(reg, v) \
71 WREG8(MGAREG_SEQ_INDEX, reg); \
72 v = RREG8(MGAREG_SEQ_DATA); \
75 #define WREG_SEQ(reg, v) \
77 WREG8(MGAREG_SEQ_INDEX, reg); \
78 WREG8(MGAREG_SEQ_DATA, v); \
81 #define RREG_CRT(reg, v) \
83 WREG8(MGAREG_CRTC_INDEX, reg); \
84 v = RREG8(MGAREG_CRTC_DATA); \
87 #define WREG_CRT(reg, v) \
89 WREG8(MGAREG_CRTC_INDEX, reg); \
90 WREG8(MGAREG_CRTC_DATA, v); \
93 #define RREG_ECRT(reg, v) \
95 WREG8(MGAREG_CRTCEXT_INDEX, reg); \
96 v = RREG8(MGAREG_CRTCEXT_DATA); \
99 #define WREG_ECRT(reg, v) \
101 WREG8(MGAREG_CRTCEXT_INDEX, reg); \
102 WREG8(MGAREG_CRTCEXT_DATA, v); \
105 #define GFX_INDEX 0x1fce
106 #define GFX_DATA 0x1fcf
108 #define WREG_GFX(reg, v) \
110 WREG8(GFX_INDEX, reg); \
111 WREG8(GFX_DATA, v); \
114 #define DAC_INDEX 0x3c00
115 #define DAC_DATA 0x3c0a
117 #define WREG_DAC(reg, v) \
119 WREG8(DAC_INDEX, reg); \
120 WREG8(DAC_DATA, v); \
123 #define MGA_MISC_OUT 0x1fc2
124 #define MGA_MISC_IN 0x1fcc
126 #define MGAG200_MAX_FB_HEIGHT 4096
127 #define MGAG200_MAX_FB_WIDTH 4096
129 #define to_mga_connector(x) container_of(x, struct mga_connector, base)
131 struct mga_i2c_chan {
132 struct i2c_adapter adapter;
133 struct drm_device *dev;
134 struct i2c_algo_bit_data bit;
138 struct mga_connector {
139 struct drm_connector base;
140 struct mga_i2c_chan *i2c;
144 resource_size_t vram_size;
145 resource_size_t vram_base;
146 resource_size_t vram_window;
162 /* HW does not handle 'startadd' field correct. */
163 #define MGAG200_FLAG_HW_BUG_NO_STARTADD (1ul << 8)
165 #define MGAG200_TYPE_MASK (0x000000ff)
166 #define MGAG200_FLAG_MASK (0x00ffff00)
168 #define IS_G200_SE(mdev) (mdev->type == G200_SE_A || mdev->type == G200_SE_B)
171 struct drm_device base;
174 resource_size_t rmmio_base;
175 resource_size_t rmmio_size;
181 size_t vram_fb_available;
196 /* SE model number stored in reg 0x1e24 */
202 struct mga_connector connector;
203 struct drm_simple_display_pipe display_pipe;
206 static inline struct mga_device *to_mga_device(struct drm_device *dev)
208 return container_of(dev, struct mga_device, base);
211 static inline enum mga_type
212 mgag200_type_from_driver_data(kernel_ulong_t driver_data)
214 return (enum mga_type)(driver_data & MGAG200_TYPE_MASK);
217 static inline unsigned long
218 mgag200_flags_from_driver_data(kernel_ulong_t driver_data)
220 return driver_data & MGAG200_FLAG_MASK;
224 int mgag200_modeset_init(struct mga_device *mdev);
227 struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev);
228 void mgag200_i2c_destroy(struct mga_i2c_chan *i2c);
231 int mgag200_mm_init(struct mga_device *mdev);
233 #endif /* __MGAG200_DRV_H__ */