1 /* 2 * Copyright (C) 2008-2009 Texas Instruments Inc 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19 #ifndef _VPFE_CAPTURE_H 20 #define _VPFE_CAPTURE_H 21 22 #ifdef __KERNEL__ 23 24 /* Header files */ 25 #include <media/v4l2-dev.h> 26 #include <linux/videodev2.h> 27 #include <linux/clk.h> 28 #include <linux/i2c.h> 29 #include <media/v4l2-fh.h> 30 #include <media/v4l2-ioctl.h> 31 #include <media/v4l2-device.h> 32 #include <media/videobuf-dma-contig.h> 33 #include <media/davinci/vpfe_types.h> 34 35 #define VPFE_CAPTURE_NUM_DECODERS 5 36 37 /* Macros */ 38 #define VPFE_MAJOR_RELEASE 0 39 #define VPFE_MINOR_RELEASE 0 40 #define VPFE_BUILD 1 41 #define VPFE_CAPTURE_VERSION_CODE ((VPFE_MAJOR_RELEASE << 16) | \ 42 (VPFE_MINOR_RELEASE << 8) | \ 43 VPFE_BUILD) 44 45 #define CAPTURE_DRV_NAME "vpfe-capture" 46 47 struct vpfe_pixel_format { 48 struct v4l2_fmtdesc fmtdesc; 49 /* bytes per pixel */ 50 int bpp; 51 }; 52 53 struct vpfe_std_info { 54 int active_pixels; 55 int active_lines; 56 /* current frame format */ 57 int frame_format; 58 }; 59 60 struct vpfe_route { 61 u32 input; 62 u32 output; 63 }; 64 65 struct vpfe_subdev_info { 66 /* Sub device name */ 67 char name[32]; 68 /* Sub device group id */ 69 int grp_id; 70 /* Number of inputs supported */ 71 int num_inputs; 72 /* inputs available at the sub device */ 73 struct v4l2_input *inputs; 74 /* Sub dev routing information for each input */ 75 struct vpfe_route *routes; 76 /* check if sub dev supports routing */ 77 int can_route; 78 /* ccdc bus/interface configuration */ 79 struct vpfe_hw_if_param ccdc_if_params; 80 /* i2c subdevice board info */ 81 struct i2c_board_info board_info; 82 }; 83 84 struct vpfe_config { 85 /* Number of sub devices connected to vpfe */ 86 int num_subdevs; 87 /* i2c bus adapter no */ 88 int i2c_adapter_id; 89 /* information about each subdev */ 90 struct vpfe_subdev_info *sub_devs; 91 /* evm card info */ 92 char *card_name; 93 /* ccdc name */ 94 char *ccdc; 95 /* vpfe clock */ 96 struct clk *vpssclk; 97 struct clk *slaveclk; 98 /* Function for Clearing the interrupt */ 99 void (*clr_intr)(int vdint); 100 }; 101 102 struct vpfe_device { 103 /* V4l2 specific parameters */ 104 /* Identifies video device for this channel */ 105 struct video_device video_dev; 106 /* sub devices */ 107 struct v4l2_subdev **sd; 108 /* vpfe cfg */ 109 struct vpfe_config *cfg; 110 /* V4l2 device */ 111 struct v4l2_device v4l2_dev; 112 /* parent device */ 113 struct device *pdev; 114 /* number of open instances of the channel */ 115 u32 usrs; 116 /* Indicates id of the field which is being displayed */ 117 u32 field_id; 118 /* flag to indicate whether decoder is initialized */ 119 u8 initialized; 120 /* current interface type */ 121 struct vpfe_hw_if_param vpfe_if_params; 122 /* ptr to currently selected sub device */ 123 struct vpfe_subdev_info *current_subdev; 124 /* current input at the sub device */ 125 int current_input; 126 /* Keeps track of the information about the standard */ 127 struct vpfe_std_info std_info; 128 /* std index into std table */ 129 int std_index; 130 /* CCDC IRQs used when CCDC/ISIF output to SDRAM */ 131 unsigned int ccdc_irq0; 132 unsigned int ccdc_irq1; 133 /* number of buffers in fbuffers */ 134 u32 numbuffers; 135 /* List of buffer pointers for storing frames */ 136 u8 *fbuffers[VIDEO_MAX_FRAME]; 137 /* Pointer pointing to current v4l2_buffer */ 138 struct videobuf_buffer *cur_frm; 139 /* Pointer pointing to next v4l2_buffer */ 140 struct videobuf_buffer *next_frm; 141 /* 142 * This field keeps track of type of buffer exchange mechanism 143 * user has selected 144 */ 145 enum v4l2_memory memory; 146 /* Used to store pixel format */ 147 struct v4l2_format fmt; 148 /* 149 * used when IMP is chained to store the crop window which 150 * is different from the image window 151 */ 152 struct v4l2_rect crop; 153 /* Buffer queue used in video-buf */ 154 struct videobuf_queue buffer_queue; 155 /* Queue of filled frames */ 156 struct list_head dma_queue; 157 /* Used in video-buf */ 158 spinlock_t irqlock; 159 /* IRQ lock for DMA queue */ 160 spinlock_t dma_queue_lock; 161 /* lock used to access this structure */ 162 struct mutex lock; 163 /* number of users performing IO */ 164 u32 io_usrs; 165 /* Indicates whether streaming started */ 166 u8 started; 167 /* 168 * offset where second field starts from the starting of the 169 * buffer for field separated YCbCr formats 170 */ 171 u32 field_off; 172 }; 173 174 /* File handle structure */ 175 struct vpfe_fh { 176 struct v4l2_fh fh; 177 struct vpfe_device *vpfe_dev; 178 /* Indicates whether this file handle is doing IO */ 179 u8 io_allowed; 180 }; 181 182 struct vpfe_config_params { 183 u8 min_numbuffers; 184 u8 numbuffers; 185 u32 min_bufsize; 186 u32 device_bufsize; 187 }; 188 189 #endif /* End of __KERNEL__ */ 190 /** 191 * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params 192 * This can be used to configure modules such as defect pixel correction, 193 * color space conversion, culling etc. This is an experimental ioctl that 194 * will change in future kernels. So use this ioctl with care ! 195 * TODO: This is to be split into multiple ioctls and also explore the 196 * possibility of extending the v4l2 api to include this 197 **/ 198 #define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \ 199 void *) 200 #endif /* _DAVINCI_VPFE_H */ 201