1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * tw68 driver common header file
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
12 * Copyright (C) 2009 William M. Brack
14 * Refactored and updated to the latest v4l core frameworks:
16 * Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>
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>
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>
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)
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)
46 #define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \
49 enum tw68_decoder_type {
56 /* ----------------------------------------------------------- */
73 u32 h_delay0; /* for TW6800 */
83 /* Techwell specific */
94 /* ----------------------------------------------------------- */
95 /* card configuration */
97 #define TW68_BOARD_NOAUTO UNSET
98 #define TW68_BOARD_UNKNOWN 0
99 #define TW68_BOARD_GENERIC_6802 1
101 #define TW68_MAXBOARDS 16
102 #define TW68_INPUT_MAX 4
104 /* ----------------------------------------------------------- */
105 /* device / file handle status */
107 #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
109 struct tw68_dev; /* forward delclaration */
111 /* buffer for one video/vbi/ts frame */
113 struct vb2_v4l2_buffer vb;
114 struct list_head list;
124 u32 fourcc; /* v4l2 format id */
130 /* global device status */
135 struct v4l2_device v4l2_dev;
137 /* various device info */
138 enum tw68_decoder_type vdecoder;
139 struct video_device vdev;
140 struct v4l2_ctrl_handler hdl;
145 unsigned char pci_rev, pci_lat;
149 /* The irq mask to be used will depend upon the chip type */
153 const struct tw68_format *fmt;
154 unsigned width, height;
157 struct vb2_queue vidq;
158 struct list_head active;
160 /* various v4l controls */
161 const struct tw68_tvnorm *tvnorm; /* video */
166 /* ----------------------------------------------------------- */
168 #define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2))
169 #define tw_readb(reg) readb(dev->bmmio + (reg))
170 #define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
171 #define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg))
173 #define tw_andorl(reg, mask, value) \
174 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
175 ((value) & (mask)), dev->lmmio+((reg)>>2))
176 #define tw_andorb(reg, mask, value) \
177 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
178 ((value) & (mask)), dev->bmmio+(reg))
179 #define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit))
180 #define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit))
181 #define tw_clearl(reg, bit) \
182 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
183 dev->lmmio + ((reg) >> 2))
184 #define tw_clearb(reg, bit) \
185 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
188 #define tw_wait(us) { udelay(us); }
190 /* ----------------------------------------------------------- */
193 void tw68_set_tvnorm_hw(struct tw68_dev *dev);
195 int tw68_video_init1(struct tw68_dev *dev);
196 int tw68_video_init2(struct tw68_dev *dev, int video_nr);
197 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
198 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
200 /* ----------------------------------------------------------- */
203 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
204 struct scatterlist *sglist, unsigned int top_offset,
205 unsigned int bottom_offset, unsigned int bpl,
206 unsigned int padding, unsigned int lines);