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-dma-sg.h> 40 41 #include "tw68-reg.h" 42 43 #define UNSET (-1U) 44 45 #define TW68_NORMS ( \ 46 V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ 47 V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) 48 49 #define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ 50 TW68_FFOF | TW68_DMAPI) 51 /* TW6800 chips have trouble with these, so we don't set them for that chip */ 52 #define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) 53 54 #define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ 55 TW68_SBDONE2) 56 57 enum tw68_decoder_type { 58 TW6800, 59 TW6801, 60 TW6804, 61 TWXXXX, 62 }; 63 64 /* ----------------------------------------------------------- */ 65 /* static data */ 66 67 struct tw68_tvnorm { 68 char *name; 69 v4l2_std_id id; 70 71 /* video decoder */ 72 u32 sync_control; 73 u32 luma_control; 74 u32 chroma_ctrl1; 75 u32 chroma_gain; 76 u32 chroma_ctrl2; 77 u32 vgate_misc; 78 79 /* video scaler */ 80 u32 h_delay; 81 u32 h_delay0; /* for TW6800 */ 82 u32 h_start; 83 u32 h_stop; 84 u32 v_delay; 85 u32 video_v_start; 86 u32 video_v_stop; 87 u32 vbi_v_start_0; 88 u32 vbi_v_stop_0; 89 u32 vbi_v_start_1; 90 91 /* Techwell specific */ 92 u32 format; 93 }; 94 95 struct tw68_format { 96 char *name; 97 u32 fourcc; 98 u32 depth; 99 u32 twformat; 100 }; 101 102 /* ----------------------------------------------------------- */ 103 /* card configuration */ 104 105 #define TW68_BOARD_NOAUTO UNSET 106 #define TW68_BOARD_UNKNOWN 0 107 #define TW68_BOARD_GENERIC_6802 1 108 109 #define TW68_MAXBOARDS 16 110 #define TW68_INPUT_MAX 4 111 112 /* ----------------------------------------------------------- */ 113 /* device / file handle status */ 114 115 #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ 116 117 struct tw68_dev; /* forward delclaration */ 118 119 /* buffer for one video/vbi/ts frame */ 120 struct tw68_buf { 121 struct vb2_buffer vb; 122 struct list_head list; 123 124 unsigned int size; 125 __le32 *cpu; 126 __le32 *jmp; 127 dma_addr_t dma; 128 }; 129 130 struct tw68_fmt { 131 char *name; 132 u32 fourcc; /* v4l2 format id */ 133 int depth; 134 int flags; 135 u32 twformat; 136 }; 137 138 /* global device status */ 139 struct tw68_dev { 140 struct mutex lock; 141 spinlock_t slock; 142 u16 instance; 143 struct v4l2_device v4l2_dev; 144 145 /* various device info */ 146 enum tw68_decoder_type vdecoder; 147 struct video_device vdev; 148 struct v4l2_ctrl_handler hdl; 149 150 /* pci i/o */ 151 char *name; 152 struct pci_dev *pci; 153 unsigned char pci_rev, pci_lat; 154 u32 __iomem *lmmio; 155 u8 __iomem *bmmio; 156 u32 pci_irqmask; 157 /* The irq mask to be used will depend upon the chip type */ 158 u32 board_virqmask; 159 160 /* video capture */ 161 const struct tw68_format *fmt; 162 unsigned width, height; 163 unsigned seqnr; 164 unsigned field; 165 struct vb2_queue vidq; 166 struct list_head active; 167 void *alloc_ctx; 168 169 /* various v4l controls */ 170 const struct tw68_tvnorm *tvnorm; /* video */ 171 172 int input; 173 }; 174 175 /* ----------------------------------------------------------- */ 176 177 #define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 178 #define tw_readb(reg) readb(dev->bmmio + (reg)) 179 #define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 180 #define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) 181 182 #define tw_andorl(reg, mask, value) \ 183 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 184 ((value) & (mask)), dev->lmmio+((reg)>>2)) 185 #define tw_andorb(reg, mask, value) \ 186 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ 187 ((value) & (mask)), dev->bmmio+(reg)) 188 #define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) 189 #define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) 190 #define tw_clearl(reg, bit) \ 191 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ 192 dev->lmmio + ((reg) >> 2)) 193 #define tw_clearb(reg, bit) \ 194 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ 195 dev->bmmio + (reg)) 196 197 #define tw_wait(us) { udelay(us); } 198 199 /* ----------------------------------------------------------- */ 200 /* tw68-video.c */ 201 202 void tw68_set_tvnorm_hw(struct tw68_dev *dev); 203 204 int tw68_video_init1(struct tw68_dev *dev); 205 int tw68_video_init2(struct tw68_dev *dev, int video_nr); 206 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); 207 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); 208 209 /* ----------------------------------------------------------- */ 210 /* tw68-risc.c */ 211 212 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, 213 struct scatterlist *sglist, unsigned int top_offset, 214 unsigned int bottom_offset, unsigned int bpl, 215 unsigned int padding, unsigned int lines); 216