1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
4 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
5 * Copyright 2009-2010 Jonathan Corbet <corbet@lwn.net>
6 * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
7 */
8
9 #ifndef __VIA_CORE_H__
10 #define __VIA_CORE_H__
11 #include <linux/types.h>
12 #include <linux/io.h>
13 #include <linux/spinlock.h>
14 #include <linux/pci.h>
15
16 /*
17 * A description of each known serial I2C/GPIO port.
18 */
19 enum via_port_type {
20 VIA_PORT_NONE = 0,
21 VIA_PORT_I2C,
22 VIA_PORT_GPIO,
23 };
24
25 enum via_port_mode {
26 VIA_MODE_OFF = 0,
27 VIA_MODE_I2C, /* Used as I2C port */
28 VIA_MODE_GPIO, /* Two GPIO ports */
29 };
30
31 enum viafb_i2c_adap {
32 VIA_PORT_26 = 0,
33 VIA_PORT_31,
34 VIA_PORT_25,
35 VIA_PORT_2C,
36 VIA_PORT_3D,
37 };
38 #define VIAFB_NUM_PORTS 5
39
40 struct via_port_cfg {
41 enum via_port_type type;
42 enum via_port_mode mode;
43 u16 io_port;
44 u8 ioport_index;
45 };
46
47 /*
48 * Allow subdevs to register suspend/resume hooks.
49 */
50 struct viafb_pm_hooks {
51 struct list_head list;
52 int (*suspend)(void *private);
53 int (*resume)(void *private);
54 void *private;
55 };
56
57 void viafb_pm_register(struct viafb_pm_hooks *hooks);
58 void viafb_pm_unregister(struct viafb_pm_hooks *hooks);
59
60 /*
61 * This is the global viafb "device" containing stuff needed by
62 * all subdevs.
63 */
64 struct viafb_dev {
65 struct pci_dev *pdev;
66 int chip_type;
67 struct via_port_cfg *port_cfg;
68 /*
69 * Spinlock for access to device registers. Not yet
70 * globally used.
71 */
72 spinlock_t reg_lock;
73 /*
74 * The framebuffer MMIO region. Little, if anything, touches
75 * this memory directly, and certainly nothing outside of the
76 * framebuffer device itself. We *do* have to be able to allocate
77 * chunks of this memory for other devices, though.
78 */
79 unsigned long fbmem_start;
80 long fbmem_len;
81 void __iomem *fbmem;
82 #if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
83 long camera_fbmem_offset;
84 long camera_fbmem_size;
85 #endif
86 /*
87 * The MMIO region for device registers.
88 */
89 unsigned long engine_start;
90 unsigned long engine_len;
91 void __iomem *engine_mmio;
92
93 };
94
95 /*
96 * Interrupt management.
97 */
98
99 void viafb_irq_enable(u32 mask);
100 void viafb_irq_disable(u32 mask);
101
102 /*
103 * The global interrupt control register and its bits.
104 */
105 #define VDE_INTERRUPT 0x200 /* Video interrupt flags/masks */
106 #define VDE_I_DVISENSE 0x00000001 /* DVI sense int status */
107 #define VDE_I_VBLANK 0x00000002 /* Vertical blank status */
108 #define VDE_I_MCCFI 0x00000004 /* MCE compl. frame int status */
109 #define VDE_I_VSYNC 0x00000008 /* VGA VSYNC int status */
110 #define VDE_I_DMA0DDONE 0x00000010 /* DMA 0 descr done */
111 #define VDE_I_DMA0TDONE 0x00000020 /* DMA 0 transfer done */
112 #define VDE_I_DMA1DDONE 0x00000040 /* DMA 1 descr done */
113 #define VDE_I_DMA1TDONE 0x00000080 /* DMA 1 transfer done */
114 #define VDE_I_C1AV 0x00000100 /* Cap Eng 1 act vid end */
115 #define VDE_I_HQV0 0x00000200 /* First HQV engine */
116 #define VDE_I_HQV1 0x00000400 /* Second HQV engine */
117 #define VDE_I_HQV1EN 0x00000800 /* Second HQV engine enable */
118 #define VDE_I_C0AV 0x00001000 /* Cap Eng 0 act vid end */
119 #define VDE_I_C0VBI 0x00002000 /* Cap Eng 0 VBI end */
120 #define VDE_I_C1VBI 0x00004000 /* Cap Eng 1 VBI end */
121 #define VDE_I_VSYNC2 0x00008000 /* Sec. Disp. VSYNC */
122 #define VDE_I_DVISNSEN 0x00010000 /* DVI sense enable */
123 #define VDE_I_VSYNC2EN 0x00020000 /* Sec Disp VSYNC enable */
124 #define VDE_I_MCCFIEN 0x00040000 /* MC comp frame int mask enable */
125 #define VDE_I_VSYNCEN 0x00080000 /* VSYNC enable */
126 #define VDE_I_DMA0DDEN 0x00100000 /* DMA 0 descr done enable */
127 #define VDE_I_DMA0TDEN 0x00200000 /* DMA 0 trans done enable */
128 #define VDE_I_DMA1DDEN 0x00400000 /* DMA 1 descr done enable */
129 #define VDE_I_DMA1TDEN 0x00800000 /* DMA 1 trans done enable */
130 #define VDE_I_C1AVEN 0x01000000 /* cap 1 act vid end enable */
131 #define VDE_I_HQV0EN 0x02000000 /* First hqv engine enable */
132 #define VDE_I_C1VBIEN 0x04000000 /* Cap 1 VBI end enable */
133 #define VDE_I_LVDSSI 0x08000000 /* LVDS sense interrupt */
134 #define VDE_I_C0AVEN 0x10000000 /* Cap 0 act vid end enable */
135 #define VDE_I_C0VBIEN 0x20000000 /* Cap 0 VBI end enable */
136 #define VDE_I_LVDSSIEN 0x40000000 /* LVDS Sense enable */
137 #define VDE_I_ENABLE 0x80000000 /* Global interrupt enable */
138
139 #if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
140 /*
141 * DMA management.
142 */
143 int viafb_request_dma(void);
144 void viafb_release_dma(void);
145 /* void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len); */
146 int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg);
147
148 /*
149 * DMA Controller registers.
150 */
151 #define VDMA_MR0 0xe00 /* Mod reg 0 */
152 #define VDMA_MR_CHAIN 0x01 /* Chaining mode */
153 #define VDMA_MR_TDIE 0x02 /* Transfer done int enable */
154 #define VDMA_CSR0 0xe04 /* Control/status */
155 #define VDMA_C_ENABLE 0x01 /* DMA Enable */
156 #define VDMA_C_START 0x02 /* Start a transfer */
157 #define VDMA_C_ABORT 0x04 /* Abort a transfer */
158 #define VDMA_C_DONE 0x08 /* Transfer is done */
159 #define VDMA_MARL0 0xe20 /* Mem addr low */
160 #define VDMA_MARH0 0xe24 /* Mem addr high */
161 #define VDMA_DAR0 0xe28 /* Device address */
162 #define VDMA_DQWCR0 0xe2c /* Count (16-byte) */
163 #define VDMA_TMR0 0xe30 /* Tile mode reg */
164 #define VDMA_DPRL0 0xe34 /* Not sure */
165 #define VDMA_DPR_IN 0x08 /* Inbound transfer to FB */
166 #define VDMA_DPRH0 0xe38
167 #define VDMA_PMR0 (0xe00 + 0x134) /* Pitch mode */
168
169 /*
170 * Useful stuff that probably belongs somewhere global.
171 */
172 #define VGA_WIDTH 640
173 #define VGA_HEIGHT 480
174 #endif /* CONFIG_VIDEO_VIA_CAMERA */
175
176 /*
177 * Indexed port operations. Note that these are all multi-op
178 * functions; every invocation will be racy if you're not holding
179 * reg_lock.
180 */
181
182 #define VIAStatus 0x3DA /* Non-indexed port */
183 #define VIACR 0x3D4
184 #define VIASR 0x3C4
185 #define VIAGR 0x3CE
186 #define VIAAR 0x3C0
187
188 static inline u8 via_read_reg(u16 port, u8 index)
189 {
190 outb(index, port);
191 return inb(port + 1);
192 }
193
194 static inline void via_write_reg(u16 port, u8 index, u8 data)
195 {
196 outb(index, port);
197 outb(data, port + 1);
198 }
199
200 static inline void via_write_reg_mask(u16 port, u8 index, u8 data, u8 mask)
201 {
202 u8 old;
203
204 outb(index, port);
205 old = inb(port + 1);
206 outb((data & mask) | (old & ~mask), port + 1);
207 }
208
209 #define VIA_MISC_REG_READ 0x03CC
210 #define VIA_MISC_REG_WRITE 0x03C2
211
212 static inline void via_write_misc_reg_mask(u8 data, u8 mask)
213 {
214 u8 old = inb(VIA_MISC_REG_READ);
215 outb((data & mask) | (old & ~mask), VIA_MISC_REG_WRITE);
216 }
217
218
219 #endif /* __VIA_CORE_H__ */
220
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