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 /* system vendor and device ID's */ 46 #define PCI_VENDOR_ID_TECHWELL 0x1797 47 #define PCI_DEVICE_ID_6800 0x6800 48 #define PCI_DEVICE_ID_6801 0x6801 49 #define PCI_DEVICE_ID_AUDIO2 0x6802 50 #define PCI_DEVICE_ID_TS3 0x6803 51 #define PCI_DEVICE_ID_6804 0x6804 52 #define PCI_DEVICE_ID_AUDIO5 0x6805 53 #define PCI_DEVICE_ID_TS6 0x6806 54 55 /* tw6816 based cards */ 56 #define PCI_DEVICE_ID_6816_1 0x6810 57 #define PCI_DEVICE_ID_6816_2 0x6811 58 #define PCI_DEVICE_ID_6816_3 0x6812 59 #define PCI_DEVICE_ID_6816_4 0x6813 60 61 #define TW68_NORMS ( \ 62 V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ 63 V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) 64 65 #define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ 66 TW68_FFOF | TW68_DMAPI) 67 /* TW6800 chips have trouble with these, so we don't set them for that chip */ 68 #define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) 69 70 #define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ 71 TW68_SBDONE2) 72 73 enum tw68_decoder_type { 74 TW6800, 75 TW6801, 76 TW6804, 77 TWXXXX, 78 }; 79 80 /* ----------------------------------------------------------- */ 81 /* static data */ 82 83 struct tw68_tvnorm { 84 char *name; 85 v4l2_std_id id; 86 87 /* video decoder */ 88 u32 sync_control; 89 u32 luma_control; 90 u32 chroma_ctrl1; 91 u32 chroma_gain; 92 u32 chroma_ctrl2; 93 u32 vgate_misc; 94 95 /* video scaler */ 96 u32 h_delay; 97 u32 h_delay0; /* for TW6800 */ 98 u32 h_start; 99 u32 h_stop; 100 u32 v_delay; 101 u32 video_v_start; 102 u32 video_v_stop; 103 u32 vbi_v_start_0; 104 u32 vbi_v_stop_0; 105 u32 vbi_v_start_1; 106 107 /* Techwell specific */ 108 u32 format; 109 }; 110 111 struct tw68_format { 112 char *name; 113 u32 fourcc; 114 u32 depth; 115 u32 twformat; 116 }; 117 118 /* ----------------------------------------------------------- */ 119 /* card configuration */ 120 121 #define TW68_BOARD_NOAUTO UNSET 122 #define TW68_BOARD_UNKNOWN 0 123 #define TW68_BOARD_GENERIC_6802 1 124 125 #define TW68_MAXBOARDS 16 126 #define TW68_INPUT_MAX 4 127 128 /* ----------------------------------------------------------- */ 129 /* device / file handle status */ 130 131 #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ 132 133 struct tw68_dev; /* forward delclaration */ 134 135 /* buffer for one video/vbi/ts frame */ 136 struct tw68_buf { 137 struct vb2_buffer vb; 138 struct list_head list; 139 140 unsigned int size; 141 __le32 *cpu; 142 __le32 *jmp; 143 dma_addr_t dma; 144 }; 145 146 struct tw68_fmt { 147 char *name; 148 u32 fourcc; /* v4l2 format id */ 149 int depth; 150 int flags; 151 u32 twformat; 152 }; 153 154 /* global device status */ 155 struct tw68_dev { 156 struct mutex lock; 157 spinlock_t slock; 158 u16 instance; 159 struct v4l2_device v4l2_dev; 160 161 /* various device info */ 162 enum tw68_decoder_type vdecoder; 163 struct video_device vdev; 164 struct v4l2_ctrl_handler hdl; 165 166 /* pci i/o */ 167 char *name; 168 struct pci_dev *pci; 169 unsigned char pci_rev, pci_lat; 170 u32 __iomem *lmmio; 171 u8 __iomem *bmmio; 172 u32 pci_irqmask; 173 /* The irq mask to be used will depend upon the chip type */ 174 u32 board_virqmask; 175 176 /* video capture */ 177 const struct tw68_format *fmt; 178 unsigned width, height; 179 unsigned seqnr; 180 unsigned field; 181 struct vb2_queue vidq; 182 struct list_head active; 183 void *alloc_ctx; 184 185 /* various v4l controls */ 186 const struct tw68_tvnorm *tvnorm; /* video */ 187 188 int input; 189 }; 190 191 /* ----------------------------------------------------------- */ 192 193 #define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 194 #define tw_readb(reg) readb(dev->bmmio + (reg)) 195 #define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 196 #define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) 197 198 #define tw_andorl(reg, mask, value) \ 199 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ 200 ((value) & (mask)), dev->lmmio+((reg)>>2)) 201 #define tw_andorb(reg, mask, value) \ 202 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ 203 ((value) & (mask)), dev->bmmio+(reg)) 204 #define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) 205 #define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) 206 #define tw_clearl(reg, bit) \ 207 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ 208 dev->lmmio + ((reg) >> 2)) 209 #define tw_clearb(reg, bit) \ 210 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ 211 dev->bmmio + (reg)) 212 213 #define tw_wait(us) { udelay(us); } 214 215 /* ----------------------------------------------------------- */ 216 /* tw68-video.c */ 217 218 void tw68_set_tvnorm_hw(struct tw68_dev *dev); 219 220 int tw68_video_init1(struct tw68_dev *dev); 221 int tw68_video_init2(struct tw68_dev *dev, int video_nr); 222 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); 223 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); 224 225 /* ----------------------------------------------------------- */ 226 /* tw68-risc.c */ 227 228 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, 229 struct scatterlist *sglist, unsigned int top_offset, 230 unsigned int bottom_offset, unsigned int bpl, 231 unsigned int padding, unsigned int lines); 232