LXR linux/include/media/davinci/vpbe.h

   1/*
   2 * Copyright (C) 2010 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 version 2.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11 * GNU General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program; if not, write to the Free Software
  15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16 */
  17#ifndef _VPBE_H
  18#define _VPBE_H
  19
  20#include <linux/videodev2.h>
  21#include <linux/i2c.h>
  22
  23#include <media/v4l2-dev.h>
  24#include <media/v4l2-ioctl.h>
  25#include <media/v4l2-device.h>
  26#include <media/davinci/vpbe_osd.h>
  27#include <media/davinci/vpbe_venc.h>
  28#include <media/davinci/vpbe_types.h>
  29
  30/* OSD configuration info */
  31struct osd_config_info {
  32        char module_name[32];
  33};
  34
  35struct vpbe_output {
  36        struct v4l2_output output;
  37        /*
  38         * If output capabilities include dv_timings, list supported timings
  39         * below
  40         */
  41        char *subdev_name;
  42        /*
  43         * defualt_mode identifies the default timings set at the venc or
  44         * external encoder.
  45         */
  46        char *default_mode;
  47        /*
  48         * Fields below are used for supporting multiple modes. For example,
  49         * LCD panel might support different modes and they are listed here.
  50         * Similarly for supporting external encoders, lcd controller port
  51         * requires a set of non-standard timing values to be listed here for
  52         * each supported mode since venc is used in non-standard timing mode
  53         * for interfacing with external encoder similar to configuring lcd
  54         * panel timings
  55         */
  56        unsigned int num_modes;
  57        struct vpbe_enc_mode_info *modes;
  58        /*
  59         * Bus configuration goes here for external encoders. Some encoders
  60         * may require multiple interface types for each of the output. For
  61         * example, SD modes would use YCC8 where as HD mode would use YCC16.
  62         * Not sure if this is needed on a per mode basis instead of per
  63         * output basis. If per mode is needed, we may have to move this to
  64         * mode_info structure
  65         */
  66        u32 if_params;
  67};
  68
  69/* encoder configuration info */
  70struct encoder_config_info {
  71        char module_name[32];
  72        /* Is this an i2c device ? */
  73        unsigned int is_i2c:1;
  74        /* i2c subdevice board info */
  75        struct i2c_board_info board_info;
  76};
  77
  78/*amplifier configuration info */
  79struct amp_config_info {
  80        char module_name[32];
  81        /* Is this an i2c device ? */
  82        unsigned int is_i2c:1;
  83        /* i2c subdevice board info */
  84        struct i2c_board_info board_info;
  85};
  86
  87/* structure for defining vpbe display subsystem components */
  88struct vpbe_config {
  89        char module_name[32];
  90        /* i2c bus adapter no */
  91        int i2c_adapter_id;
  92        struct osd_config_info osd;
  93        struct encoder_config_info venc;
  94        /* external encoder information goes here */
  95        int num_ext_encoders;
  96        struct encoder_config_info *ext_encoders;
  97        /* amplifier information goes here */
  98        struct amp_config_info *amp;
  99        int num_outputs;
 100        /* Order is venc outputs followed by LCD and then external encoders */
 101        struct vpbe_output *outputs;
 102};
 103
 104struct vpbe_device;
 105
 106struct vpbe_device_ops {
 107        /* crop cap for the display */
 108        int (*g_cropcap)(struct vpbe_device *vpbe_dev,
 109                         struct v4l2_cropcap *cropcap);
 110
 111        /* Enumerate the outputs */
 112        int (*enum_outputs)(struct vpbe_device *vpbe_dev,
 113                            struct v4l2_output *output);
 114
 115        /* Set output to the given index */
 116        int (*set_output)(struct vpbe_device *vpbe_dev,
 117                         int index);
 118
 119        /* Get current output */
 120        unsigned int (*get_output)(struct vpbe_device *vpbe_dev);
 121
 122        /* Set DV preset at current output */
 123        int (*s_dv_timings)(struct vpbe_device *vpbe_dev,
 124                           struct v4l2_dv_timings *dv_timings);
 125
 126        /* Get DV presets supported at the output */
 127        int (*g_dv_timings)(struct vpbe_device *vpbe_dev,
 128                           struct v4l2_dv_timings *dv_timings);
 129
 130        /* Enumerate the DV Presets supported at the output */
 131        int (*enum_dv_timings)(struct vpbe_device *vpbe_dev,
 132                               struct v4l2_enum_dv_timings *timings_info);
 133
 134        /* Set std at the output */
 135        int (*s_std)(struct vpbe_device *vpbe_dev, v4l2_std_id std_id);
 136
 137        /* Get the current std at the output */
 138        int (*g_std)(struct vpbe_device *vpbe_dev, v4l2_std_id *std_id);
 139
 140        /* initialize the device */
 141        int (*initialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 142
 143        /* De-initialize the device */
 144        void (*deinitialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 145
 146        /* Get the current mode info */
 147        int (*get_mode_info)(struct vpbe_device *vpbe_dev,
 148                             struct vpbe_enc_mode_info*);
 149
 150        /*
 151         * Set the current mode in the encoder. Alternate way of setting
 152         * standard or DV preset or custom timings in the encoder
 153         */
 154        int (*set_mode)(struct vpbe_device *vpbe_dev,
 155                        struct vpbe_enc_mode_info*);
 156        /* Power management operations */
 157        int (*suspend)(struct vpbe_device *vpbe_dev);
 158        int (*resume)(struct vpbe_device *vpbe_dev);
 159};
 160
 161/* struct for vpbe device */
 162struct vpbe_device {
 163        /* V4l2 device */
 164        struct v4l2_device v4l2_dev;
 165        /* vpbe dispay controller cfg */
 166        struct vpbe_config *cfg;
 167        /* parent device */
 168        struct device *pdev;
 169        /* external encoder v4l2 sub devices */
 170        struct v4l2_subdev **encoders;
 171        /* current encoder index */
 172        int current_sd_index;
 173        /* external amplifier v4l2 subdevice */
 174        struct v4l2_subdev *amp;
 175        struct mutex lock;
 176        /* device initialized */
 177        int initialized;
 178        /* vpbe dac clock */
 179        struct clk *dac_clk;
 180        /* osd_device pointer */
 181        struct osd_state *osd_device;
 182        /* venc device pointer */
 183        struct venc_platform_data *venc_device;
 184        /*
 185         * fields below are accessed by users of vpbe_device. Not the
 186         * ones above
 187         */
 188
 189        /* current output */
 190        int current_out_index;
 191        /* lock used by caller to do atomic operation on vpbe device */
 192        /* current timings set in the controller */
 193        struct vpbe_enc_mode_info current_timings;
 194        /* venc sub device */
 195        struct v4l2_subdev *venc;
 196        /* device operations below */
 197        struct vpbe_device_ops ops;
 198};
 199
 200#endif
 201