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 */
  27 struct osd_config_info {
  28         char module_name[32];
  29 };
  30
  31 struct 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 */
  66 struct 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 */
  75 struct 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 */
  84 struct 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
 100 struct vpbe_device;
 101
 102 struct vpbe_device_ops {
 103         /* crop cap for the display */
 104         int (*g_cropcap)(struct vpbe_device *vpbe_dev,
 105                          struct v4l2_cropcap *cropcap);
 106
 107         /* Enumerate the outputs */
 108         int (*enum_outputs)(struct vpbe_device *vpbe_dev,
 109                             struct v4l2_output *output);
 110
 111         /* Set output to the given index */
 112         int (*set_output)(struct vpbe_device *vpbe_dev,
 113                          int index);
 114
 115         /* Get current output */
 116         unsigned int (*get_output)(struct vpbe_device *vpbe_dev);
 117
 118         /* Set DV preset at current output */
 119         int (*s_dv_timings)(struct vpbe_device *vpbe_dev,
 120                            struct v4l2_dv_timings *dv_timings);
 121
 122         /* Get DV presets supported at the output */
 123         int (*g_dv_timings)(struct vpbe_device *vpbe_dev,
 124                            struct v4l2_dv_timings *dv_timings);
 125
 126         /* Enumerate the DV Presets supported at the output */
 127         int (*enum_dv_timings)(struct vpbe_device *vpbe_dev,
 128                                struct v4l2_enum_dv_timings *timings_info);
 129
 130         /* Set std at the output */
 131         int (*s_std)(struct vpbe_device *vpbe_dev, v4l2_std_id std_id);
 132
 133         /* Get the current std at the output */
 134         int (*g_std)(struct vpbe_device *vpbe_dev, v4l2_std_id *std_id);
 135
 136         /* initialize the device */
 137         int (*initialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 138
 139         /* De-initialize the device */
 140         void (*deinitialize)(struct device *dev, struct vpbe_device *vpbe_dev);
 141
 142         /* Get the current mode info */
 143         int (*get_mode_info)(struct vpbe_device *vpbe_dev,
 144                              struct vpbe_enc_mode_info*);
 145
 146         /*
 147          * Set the current mode in the encoder. Alternate way of setting
 148          * standard or DV preset or custom timings in the encoder
 149          */
 150         int (*set_mode)(struct vpbe_device *vpbe_dev,
 151                         struct vpbe_enc_mode_info*);
 152         /* Power management operations */
 153         int (*suspend)(struct vpbe_device *vpbe_dev);
 154         int (*resume)(struct vpbe_device *vpbe_dev);
 155 };
 156
 157 /* struct for vpbe device */
 158 struct vpbe_device {
 159         /* V4l2 device */
 160         struct v4l2_device v4l2_dev;
 161         /* vpbe dispay controller cfg */
 162         struct vpbe_config *cfg;
 163         /* parent device */
 164         struct device *pdev;
 165         /* external encoder v4l2 sub devices */
 166         struct v4l2_subdev **encoders;
 167         /* current encoder index */
 168         int current_sd_index;
 169         /* external amplifier v4l2 subdevice */
 170         struct v4l2_subdev *amp;
 171         struct mutex lock;
 172         /* device initialized */
 173         int initialized;
 174         /* vpbe dac clock */
 175         struct clk *dac_clk;
 176         /* osd_device pointer */
 177         struct osd_state *osd_device;
 178         /* venc device pointer */
 179         struct venc_platform_data *venc_device;
 180         /*
 181          * fields below are accessed by users of vpbe_device. Not the
 182          * ones above
 183          */
 184
 185         /* current output */
 186         int current_out_index;
 187         /* lock used by caller to do atomic operation on vpbe device */
 188         /* current timings set in the controller */
 189         struct vpbe_enc_mode_info current_timings;
 190         /* venc sub device */
 191         struct v4l2_subdev *venc;
 192         /* device operations below */
 193         struct vpbe_device_ops ops;
 194 };
 195
 196 #endif