1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * tw68 driver common header file |
4 | * |
5 | * Much of this code is derived from the cx88 and sa7134 drivers, which |
6 | * were in turn derived from the bt87x driver. The original work was by |
7 | * Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab, |
8 | * Hans Verkuil, Andy Walls and many others. Their work is gratefully |
9 | * acknowledged. Full credit goes to them - any problems within this code |
10 | * are mine. |
11 | * |
12 | * Copyright (C) 2009 William M. Brack |
13 | * |
14 | * Refactored and updated to the latest v4l core frameworks: |
15 | * |
16 | * Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl> |
17 | */ |
18 | |
19 | #include <linux/pci.h> |
20 | #include <linux/videodev2.h> |
21 | #include <linux/notifier.h> |
22 | #include <linux/delay.h> |
23 | #include <linux/mutex.h> |
24 | #include <linux/io.h> |
25 | |
26 | #include <media/v4l2-common.h> |
27 | #include <media/v4l2-ioctl.h> |
28 | #include <media/v4l2-ctrls.h> |
29 | #include <media/v4l2-device.h> |
30 | #include <media/videobuf2-v4l2.h> |
31 | #include <media/videobuf2-dma-sg.h> |
32 | |
33 | #include "tw68-reg.h" |
34 | |
35 | #define UNSET (-1U) |
36 | |
37 | #define TW68_NORMS ( \ |
38 | V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ |
39 | V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) |
40 | |
41 | #define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ |
42 | TW68_FFOF | TW68_DMAPI) |
43 | /* TW6800 chips have trouble with these, so we don't set them for that chip */ |
44 | #define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) |
45 | |
46 | #define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ |
47 | TW68_SBDONE2) |
48 | |
49 | enum tw68_decoder_type { |
50 | TW6800, |
51 | TW6801, |
52 | TW6804, |
53 | TWXXXX, |
54 | }; |
55 | |
56 | /* ----------------------------------------------------------- */ |
57 | /* static data */ |
58 | |
59 | struct tw68_tvnorm { |
60 | char *name; |
61 | v4l2_std_id id; |
62 | |
63 | /* video decoder */ |
64 | u32 sync_control; |
65 | u32 luma_control; |
66 | u32 chroma_ctrl1; |
67 | u32 chroma_gain; |
68 | u32 chroma_ctrl2; |
69 | u32 vgate_misc; |
70 | |
71 | /* video scaler */ |
72 | u32 h_delay; |
73 | u32 h_delay0; /* for TW6800 */ |
74 | u32 h_start; |
75 | u32 h_stop; |
76 | u32 v_delay; |
77 | u32 video_v_start; |
78 | u32 video_v_stop; |
79 | u32 vbi_v_start_0; |
80 | u32 vbi_v_stop_0; |
81 | u32 vbi_v_start_1; |
82 | |
83 | /* Techwell specific */ |
84 | u32 format; |
85 | }; |
86 | |
87 | struct tw68_format { |
88 | u32 fourcc; |
89 | u32 depth; |
90 | u32 twformat; |
91 | }; |
92 | |
93 | /* ----------------------------------------------------------- */ |
94 | /* card configuration */ |
95 | |
96 | #define TW68_BOARD_NOAUTO UNSET |
97 | #define TW68_BOARD_UNKNOWN 0 |
98 | #define TW68_BOARD_GENERIC_6802 1 |
99 | |
100 | #define TW68_MAXBOARDS 16 |
101 | #define TW68_INPUT_MAX 4 |
102 | |
103 | /* ----------------------------------------------------------- */ |
104 | /* device / file handle status */ |
105 | |
106 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ |
107 | |
108 | struct tw68_dev; /* forward delclaration */ |
109 | |
110 | /* buffer for one video/vbi/ts frame */ |
111 | struct tw68_buf { |
112 | struct vb2_v4l2_buffer vb; |
113 | struct list_head list; |
114 | |
115 | unsigned int size; |
116 | __le32 *cpu; |
117 | __le32 *jmp; |
118 | dma_addr_t dma; |
119 | }; |
120 | |
121 | struct tw68_fmt { |
122 | char *name; |
123 | u32 fourcc; /* v4l2 format id */ |
124 | int depth; |
125 | int flags; |
126 | u32 twformat; |
127 | }; |
128 | |
129 | /* global device status */ |
130 | struct tw68_dev { |
131 | struct mutex lock; |
132 | spinlock_t slock; |
133 | u16 instance; |
134 | struct v4l2_device v4l2_dev; |
135 | |
136 | /* various device info */ |
137 | enum tw68_decoder_type vdecoder; |
138 | struct video_device vdev; |
139 | struct v4l2_ctrl_handler hdl; |
140 | |
141 | /* pci i/o */ |
142 | char *name; |
143 | struct pci_dev *pci; |
144 | unsigned char pci_rev, pci_lat; |
145 | u32 __iomem *lmmio; |
146 | u8 __iomem *bmmio; |
147 | u32 pci_irqmask; |
148 | /* The irq mask to be used will depend upon the chip type */ |
149 | u32 board_virqmask; |
150 | |
151 | /* video capture */ |
152 | const struct tw68_format *fmt; |
153 | unsigned width, height; |
154 | unsigned seqnr; |
155 | unsigned field; |
156 | struct vb2_queue vidq; |
157 | struct list_head active; |
158 | |
159 | /* various v4l controls */ |
160 | const struct tw68_tvnorm *tvnorm; /* video */ |
161 | |
162 | int input; |
163 | }; |
164 | |
165 | /* ----------------------------------------------------------- */ |
166 | |
167 | #define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) |
168 | #define tw_readb(reg) readb(dev->bmmio + (reg)) |
169 | #define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) |
170 | #define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) |
171 | |
172 | #define tw_andorl(reg, mask, value) \ |
173 | writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ |
174 | ((value) & (mask)), dev->lmmio+((reg)>>2)) |
175 | #define tw_andorb(reg, mask, value) \ |
176 | writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ |
177 | ((value) & (mask)), dev->bmmio+(reg)) |
178 | #define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) |
179 | #define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) |
180 | #define tw_clearl(reg, bit) \ |
181 | writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ |
182 | dev->lmmio + ((reg) >> 2)) |
183 | #define tw_clearb(reg, bit) \ |
184 | writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ |
185 | dev->bmmio + (reg)) |
186 | |
187 | #define tw_wait(us) { udelay(us); } |
188 | |
189 | /* ----------------------------------------------------------- */ |
190 | /* tw68-video.c */ |
191 | |
192 | void tw68_set_tvnorm_hw(struct tw68_dev *dev); |
193 | |
194 | int tw68_video_init1(struct tw68_dev *dev); |
195 | int tw68_video_init2(struct tw68_dev *dev, int video_nr); |
196 | void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); |
197 | int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); |
198 | |
199 | /* ----------------------------------------------------------- */ |
200 | /* tw68-risc.c */ |
201 | |
202 | int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, |
203 | struct scatterlist *sglist, unsigned int top_offset, |
204 | unsigned int bottom_offset, unsigned int bpl, |
205 | unsigned int padding, unsigned int lines); |
206 | |