1 /* 2 * tw68 driver common header file 3 * 4 * Much of this code is derived from the cx88 and sa7134 drivers, which 5 * were in turn derived from the bt87x driver. The original work was by 6 * Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab, 7 * Hans Verkuil, Andy Walls and many others. Their work is gratefully 8 * acknowledged. Full credit goes to them - any problems within this code 9 * are mine. 10 * 11 * Copyright (C) 2009 William M. Brack 12 * 13 * Refactored and updated to the latest v4l core frameworks: 14 * 15 * Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl> 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 */ 27 28 #include <linux/pci.h> 29 #include <linux/videodev2.h> 30 #include <linux/notifier.h> 31 #include <linux/delay.h> 32 #include <linux/mutex.h> 33 #include <linux/io.h> 34 35 #include <media/v4l2-common.h> 36 #include <media/v4l2-ioctl.h> 37 #include <media/v4l2-ctrls.h> 38 #include <media/v4l2-device.h> 39 #include <media/videobuf2-v4l2.h> 40 #include <media/videobuf2-dma-sg.h> 41 42 #include "tw68-reg.h" 43 44 #define UNSET (-1U) 45 46 #define TW68_NORMS ( \ 47 V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ 48 V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) 49 50 #define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ 51 TW68_FFOF | TW68_DMAPI) 52 /* TW6800 chips have trouble with these, so we don't set them for that chip */ 53 #define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) 54 55 #define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ 56 TW68_SBDONE2) 57 58 enum tw68_decoder_type { 59 TW6800, 60 TW6801, 61 TW6804, 62 TWXXXX, 63 }; 64 65 /* ----------------------------------------------------------- */ 66 /* static data */ 67 68 struct tw68_tvnorm { 69 char *name; 70 v4l2_std_id id; 71 72 /* video decoder */ 73 u32 sync_control; 74 u32 luma_control; 75 u32 chroma_ctrl1; 76 u32 chroma_gain; 77 u32 chroma_ctrl2; 78 u32 vgate_misc; 79 80 /* video scaler */ 81 u32 h_delay; 82 u32 h_delay0; /* for TW6800 */ 83 u32 h_start; 84 u32 h_stop; 85 u32 v_delay; 86 u32 video_v_start; 87 u32 video_v_stop; 88 u32 vbi_v_start_0; 89 u32 vbi_v_stop_0; 90 u32 vbi_v_start_1; 91 92 /* Techwell specific */ 93 u32 format; 94 }; 95 96 struct tw68_format { 97 char *name; 98 u32 fourcc; 99 u32 depth; 100 u32 twformat; 101 }; 102 103 /* ----------------------------------------------------------- */ 104 /* card configuration */ 105 106 #define TW68_BOARD_NOAUTO UNSET 107 #define TW68_BOARD_UNKNOWN 0 108 #define TW68_BOARD_GENERIC_6802 1 109 110 #define TW68_MAXBOARDS 16 111 #define TW68_INPUT_MAX 4 112 113 /* ----------------------------------------------------------- */ 114 /* device / file handle status */ 115 116 #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ 117 118 struct tw68_dev; /* forward delclaration */ 119 120 /* buffer for one video/vbi/ts frame */ 121 struct tw68_buf { 122 struct vb2_v4l2_buffer vb; 123 struct list_head list; 124 125 unsigned int size; 126 __le32 *cpu; 127 __le32 *jmp; 128 dma_addr_t dma; 129 }; 130 131 struct tw68_fmt { 132 char *name; 133 u32 fourcc; /* v4l2 format id */ 134 int depth; 135 int flags; 136 u32 twformat; 137 }; 138 139 /* global device status */ 140 struct tw68_dev { 141 struct mutex lock; 142 spinlock_t slock; 143 u16 instance; 144 struct v4l2_device v4l2_dev; 145 146 /* various device info */ 147 enum tw68_decoder_type vdecoder; 148 struct video_device vdev; 149 struct v4l2_ctrl_handler hdl; 150 151 /* pci i/o */ 152 char *name; 153 struct pci_dev *pci; 154 unsigned char pci_rev, pci_lat; 155 u32 __iomem *lmmio; 156 u8 __iomem *bmmio; 157 u32 pci_irqmask; 158 /* The irq mask to be used will depend upon the chip type */ 159 u32 board_virqmask; 160 161 /* video capture */ 162 const struct tw68_format *fmt; 163 unsigned width, height; 164 unsigned seqnr; 165 unsigned field; 166 struct vb2_queue vidq; 167 struct list_head active; 168 void *alloc_ctx; 169 170 /* various v4l controls */ 171 const struct tw68_tvnorm *tvnorm; /* video */ 172 173 int input; 174 }; 175 176 /* ----------------------------------------------------------- */ 177 178 #define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 179 #define tw_readb(reg) readb(dev->bmmio + (reg)) 180 #define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 181 #define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) 182 183 #define tw_andorl(reg, mask, value) \ 184 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 185 ((value) & (mask)), dev->lmmio+((reg)>>2)) 186 #define tw_andorb(reg, mask, value) \ 187 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ 188 ((value) & (mask)), dev->bmmio+(reg)) 189 #define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) 190 #define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) 191 #define tw_clearl(reg, bit) \ 192 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ 193 dev->lmmio + ((reg) >> 2)) 194 #define tw_clearb(reg, bit) \ 195 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ 196 dev->bmmio + (reg)) 197 198 #define tw_wait(us) { udelay(us); } 199 200 /* ----------------------------------------------------------- */ 201 /* tw68-video.c */ 202 203 void tw68_set_tvnorm_hw(struct tw68_dev *dev); 204 205 int tw68_video_init1(struct tw68_dev *dev); 206 int tw68_video_init2(struct tw68_dev *dev, int video_nr); 207 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); 208 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); 209 210 /* ----------------------------------------------------------- */ 211 /* tw68-risc.c */ 212 213 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, 214 struct scatterlist *sglist, unsigned int top_offset, 215 unsigned int bottom_offset, unsigned int bpl, 216 unsigned int padding, unsigned int lines); 217