Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*
  2  */
  3 
  4 #ifndef MSP3400_DRIVER_H
  5 #define MSP3400_DRIVER_H
  6 
  7 #include <media/msp3400.h>
  8 #include <media/v4l2-device.h>
  9 
 10 /* ---------------------------------------------------------------------- */
 11 
 12 /* This macro is allowed for *constants* only, gcc must calculate it
 13    at compile time.  Remember -- no floats in kernel mode */
 14 #define MSP_CARRIER(freq) ((int)((float)(freq / 18.432) * (1 << 24)))
 15 
 16 #define MSP_MODE_AM_DETECT   0
 17 #define MSP_MODE_FM_RADIO    2
 18 #define MSP_MODE_FM_TERRA    3
 19 #define MSP_MODE_FM_SAT      4
 20 #define MSP_MODE_FM_NICAM1   5
 21 #define MSP_MODE_FM_NICAM2   6
 22 #define MSP_MODE_AM_NICAM    7
 23 #define MSP_MODE_BTSC        8
 24 #define MSP_MODE_EXTERN      9
 25 
 26 #define SCART_IN1     0
 27 #define SCART_IN2     1
 28 #define SCART_IN3     2
 29 #define SCART_IN4     3
 30 #define SCART_IN1_DA  4
 31 #define SCART_IN2_DA  5
 32 #define SCART_MONO    6
 33 #define SCART_MUTE    7
 34 
 35 #define SCART_DSP_IN  0
 36 #define SCART1_OUT    1
 37 #define SCART2_OUT    2
 38 
 39 #define OPMODE_AUTO       -1
 40 #define OPMODE_MANUAL      0
 41 #define OPMODE_AUTODETECT  1   /* use autodetect (>= msp3410 only) */
 42 #define OPMODE_AUTOSELECT  2   /* use autodetect & autoselect (>= msp34xxG)   */
 43 
 44 /* module parameters */
 45 extern int msp_debug;
 46 extern int msp_once;
 47 extern int msp_amsound;
 48 extern int msp_standard;
 49 extern int msp_dolby;
 50 extern int msp_stereo_thresh;
 51 
 52 struct msp_state {
 53         struct v4l2_subdev sd;
 54         int rev1, rev2;
 55         int ident;
 56         u8 has_nicam;
 57         u8 has_radio;
 58         u8 has_headphones;
 59         u8 has_ntsc_jp_d_k3;
 60         u8 has_scart2;
 61         u8 has_scart3;
 62         u8 has_scart4;
 63         u8 has_scart2_out;
 64         u8 has_scart2_out_volume;
 65         u8 has_i2s_conf;
 66         u8 has_subwoofer;
 67         u8 has_sound_processing;
 68         u8 has_virtual_dolby_surround;
 69         u8 has_dolby_pro_logic;
 70         u8 force_btsc;
 71 
 72         int radio;
 73         int opmode;
 74         int std;
 75         int mode;
 76         v4l2_std_id v4l2_std;
 77         int nicam_on;
 78         int acb;
 79         int in_scart;
 80         int i2s_mode;
 81         int main, second;       /* sound carrier */
 82         int input;
 83         u32 route_in;
 84         u32 route_out;
 85 
 86         /* v4l2 */
 87         int audmode;
 88         int rxsubchans;
 89 
 90         int volume, muted;
 91         int balance, loudness;
 92         int bass, treble;
 93         int scan_in_progress;
 94 
 95         /* thread */
 96         struct task_struct   *kthread;
 97         wait_queue_head_t    wq;
 98         unsigned int         restart:1;
 99         unsigned int         watch_stereo:1;
100 };
101 
102 static inline struct msp_state *to_state(struct v4l2_subdev *sd)
103 {
104         return container_of(sd, struct msp_state, sd);
105 }
106 
107 /* msp3400-driver.c */
108 int msp_write_dem(struct i2c_client *client, int addr, int val);
109 int msp_write_dsp(struct i2c_client *client, int addr, int val);
110 int msp_read_dem(struct i2c_client *client, int addr);
111 int msp_read_dsp(struct i2c_client *client, int addr);
112 int msp_reset(struct i2c_client *client);
113 void msp_set_scart(struct i2c_client *client, int in, int out);
114 void msp_set_audio(struct i2c_client *client);
115 int msp_sleep(struct msp_state *state, int timeout);
116 
117 /* msp3400-kthreads.c */
118 const char *msp_standard_std_name(int std);
119 void msp_set_audmode(struct i2c_client *client);
120 int msp_detect_stereo(struct i2c_client *client);
121 int msp3400c_thread(void *data);
122 int msp3410d_thread(void *data);
123 int msp34xxg_thread(void *data);
124 void msp3400c_set_mode(struct i2c_client *client, int mode);
125 void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2);
126 
127 #endif /* MSP3400_DRIVER_H */
128 
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