1 /* 2 * Driver for the Conexant CX23885/7/8 PCIe bridge 3 * 4 * Various common ioctl() support functions 5 * 6 * Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22 */ 23 24 #include "cx23885.h" 25 #include "cx23885-ioctl.h" 26 27 #ifdef CONFIG_VIDEO_ADV_DEBUG 28 int cx23885_g_chip_info(struct file *file, void *fh, 29 struct v4l2_dbg_chip_info *chip) 30 { 31 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev; 32 33 if (chip->match.addr > 1) 34 return -EINVAL; 35 if (chip->match.addr == 1) { 36 if (dev->v4l_device == NULL) 37 return -EINVAL; 38 strlcpy(chip->name, "cx23417", sizeof(chip->name)); 39 } else { 40 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name)); 41 } 42 return 0; 43 } 44 45 static int cx23417_g_register(struct cx23885_dev *dev, 46 struct v4l2_dbg_register *reg) 47 { 48 u32 value; 49 50 if (dev->v4l_device == NULL) 51 return -EINVAL; 52 53 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000) 54 return -EINVAL; 55 56 if (mc417_register_read(dev, (u16) reg->reg, &value)) 57 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */ 58 59 reg->size = 4; 60 reg->val = value; 61 return 0; 62 } 63 64 int cx23885_g_register(struct file *file, void *fh, 65 struct v4l2_dbg_register *reg) 66 { 67 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev; 68 69 if (reg->match.addr > 1) 70 return -EINVAL; 71 if (reg->match.addr) 72 return cx23417_g_register(dev, reg); 73 74 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0)) 75 return -EINVAL; 76 77 reg->size = 4; 78 reg->val = cx_read(reg->reg); 79 return 0; 80 } 81 82 static int cx23417_s_register(struct cx23885_dev *dev, 83 const struct v4l2_dbg_register *reg) 84 { 85 if (dev->v4l_device == NULL) 86 return -EINVAL; 87 88 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000) 89 return -EINVAL; 90 91 if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val)) 92 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */ 93 return 0; 94 } 95 96 int cx23885_s_register(struct file *file, void *fh, 97 const struct v4l2_dbg_register *reg) 98 { 99 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev; 100 101 if (reg->match.addr > 1) 102 return -EINVAL; 103 if (reg->match.addr) 104 return cx23417_s_register(dev, reg); 105 106 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0)) 107 return -EINVAL; 108 109 cx_write(reg->reg, reg->val); 110 return 0; 111 } 112 #endif 113