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TOMOYO Linux Cross Reference
Linux/include/media/davinci/vpbe.h

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  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 */
 31 struct osd_config_info {
 32         char module_name[32];
 33 };
 34 
 35 struct 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         enum v4l2_mbus_pixelcode if_params;
 67 };
 68 
 69 /* encoder configuration info */
 70 struct 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 */
 79 struct 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 */
 88 struct 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 
104 struct vpbe_device;
105 
106 struct 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 */
162 struct 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 

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