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#ifndef _VPBE_H
  14#define _VPBE_H
  15
  16#include <linux/videodev2.h>
  17#include <linux/i2c.h>
  18
  19#include <media/v4l2-dev.h>
  20#include <media/v4l2-ioctl.h>
  21#include <media/v4l2-device.h>
  22#include <media/davinci/vpbe_osd.h>
  23#include <media/davinci/vpbe_venc.h>
  24#include <media/davinci/vpbe_types.h>
  25
  26/* OSD configuration info */
  27struct osd_config_info {
  28        char module_name[32];
  29};
  30
  31struct vpbe_output {
  32        struct v4l2_output output;
  33        /*
  34         * If output capabilities include dv_timings, list supported timings
  35         * below
  36         */
  37        char *subdev_name;
  38        /*
  39         * defualt_mode identifies the default timings set at the venc or
  40         * external encoder.
  41         */
  42        char *default_mode;
  43        /*
  44         * Fields below are used for supporting multiple modes. For example,
  45         * LCD panel might support different modes and they are listed here.
  46         * Similarly for supporting external encoders, lcd controller port
  47         * requires a set of non-standard timing values to be listed here for
  48         * each supported mode since venc is used in non-standard timing mode
  49         * for interfacing with external encoder similar to configuring lcd
  50         * panel timings
  51         */
  52        unsigned int num_modes;
  53        struct vpbe_enc_mode_info *modes;
  54        /*
  55         * Bus configuration goes here for external encoders. Some encoders
  56         * may require multiple interface types for each of the output. For
  57         * example, SD modes would use YCC8 where as HD mode would use YCC16.
  58         * Not sure if this is needed on a per mode basis instead of per
  59         * output basis. If per mode is needed, we may have to move this to
  60         * mode_info structure
  61         */
  62        u32 if_params;
  63};
  64
  65/* encoder configuration info */
  66struct encoder_config_info {
  67        char module_name[32];
  68        /* Is this an i2c device ? */
  69        unsigned int is_i2c:1;
  70        /* i2c subdevice board info */
  71        struct i2c_board_info board_info;
  72};
  73
  74/*amplifier configuration info */
  75struct amp_config_info {
  76        char module_name[32];
  77        /* Is this an i2c device ? */
  78        unsigned int is_i2c:1;
  79        /* i2c subdevice board info */
  80        struct i2c_board_info board_info;
  81};
  82
  83/* structure for defining vpbe display subsystem components */
  84struct vpbe_config {
  85        char module_name[32];
  86        /* i2c bus adapter no */
  87        int i2c_adapter_id;
  88        struct osd_config_info osd;
  89        struct encoder_config_info venc;
  90        /* external encoder information goes here */
  91        int num_ext_encoders;
  92        struct encoder_config_info *ext_encoders;
  93        /* amplifier information goes here */
  94        struct amp_config_info *amp;
  95        int num_outputs;
  96        /* Order is venc outputs followed by LCD and then external encoders */
  97        struct vpbe_output *outputs;
  98};
  99
 100struct vpbe_device;
 101
 102struct vpbe_device_ops {
 103        /* Enumerate the outputs */
 104        int (*enum_outputs)(struct vpbe_device *vpbe_dev,
 105                            struct v4l2_output *output);
 106
 107        /* Set output to the given index */
 108        int (*set_output)(struct vpbe_device *vpbe_dev,
 109                         int index);
 110
 111        /* Get current output */
 112        unsigned int (*get_output)(struct vpbe_device *vpbe_dev);
 113
 114        /* Set DV preset at current output */
 115        int (*s_dv_timings)(struct vpbe_device *vpbe_dev,
 116                           struct v4l2_dv_timings *dv_timings);
 117
 118        /* Get DV presets supported at the output */
 119        int (*g_dv_timings)(struct vpbe_device *vpbe_dev,
 120                           struct v4l2_dv_timings *dv_timings);
 121
 122        /* Enumerate the DV Presets supported at the output */
 123        int (*enum_dv_timings)(struct vpbe_device *vpbe_dev,
 124                               struct v4l2_enum_dv_timings *timings_info);
 125
 126        /* Set std at the output */
 127        int (*s_std)(struct vpbe_device *vpbe_dev, v4l2_std_id std_id);
 128
 129        /* Get the current std at the output */
 130        int (*g_std)(struct vpbe_device *vpbe_dev, v4l2_std_id *std_id);
 131
 132        /* initialize the device */
 133        int (*initialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 134
 135        /* De-initialize the device */
 136        void (*deinitialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 137
 138        /* Get the current mode info */
 139        int (*get_mode_info)(struct vpbe_device *vpbe_dev,
 140                             struct vpbe_enc_mode_info*);
 141
 142        /*
 143         * Set the current mode in the encoder. Alternate way of setting
 144         * standard or DV preset or custom timings in the encoder
 145         */
 146        int (*set_mode)(struct vpbe_device *vpbe_dev,
 147                        struct vpbe_enc_mode_info*);
 148        /* Power management operations */
 149        int (*suspend)(struct vpbe_device *vpbe_dev);
 150        int (*resume)(struct vpbe_device *vpbe_dev);
 151};
 152
 153/* struct for vpbe device */
 154struct vpbe_device {
 155        /* V4l2 device */
 156        struct v4l2_device v4l2_dev;
 157        /* vpbe dispay controller cfg */
 158        struct vpbe_config *cfg;
 159        /* parent device */
 160        struct device *pdev;
 161        /* external encoder v4l2 sub devices */
 162        struct v4l2_subdev **encoders;
 163        /* current encoder index */
 164        int current_sd_index;
 165        /* external amplifier v4l2 subdevice */
 166        struct v4l2_subdev *amp;
 167        struct mutex lock;
 168        /* device initialized */
 169        int initialized;
 170        /* vpbe dac clock */
 171        struct clk *dac_clk;
 172        /* osd_device pointer */
 173        struct osd_state *osd_device;
 174        /* venc device pointer */
 175        struct venc_platform_data *venc_device;
 176        /*
 177         * fields below are accessed by users of vpbe_device. Not the
 178         * ones above
 179         */
 180
 181        /* current output */
 182        int current_out_index;
 183        /* lock used by caller to do atomic operation on vpbe device */
 184        /* current timings set in the controller */
 185        struct vpbe_enc_mode_info current_timings;
 186        /* venc sub device */
 187        struct v4l2_subdev *venc;
 188        /* device operations below */
 189        struct vpbe_device_ops ops;
 190};
 191
 192#endif
 193