drivers/media/dvb-frontends/tda1004x.h

   1   /*
   2      Driver for Philips tda1004xh OFDM Frontend
   3
   4      (c) 2004 Andrew de Quincey
   5
   6      This program is free software; you can redistribute it and/or modify
   7      it under the terms of the GNU General Public License as published by
   8      the Free Software Foundation; either version 2 of the License, or
   9      (at your option) any later version.
  10
  11      This program is distributed in the hope that it will be useful,
  12      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14
  15      GNU General Public License for more details.
  16
  17      You should have received a copy of the GNU General Public License
  18      along with this program; if not, write to the Free Software
  19      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21    */
  22
  23 #ifndef TDA1004X_H
  24 #define TDA1004X_H
  25
  26 #include <linux/dvb/frontend.h>
  27 #include <linux/firmware.h>
  28
  29 enum tda10046_xtal {
  30         TDA10046_XTAL_4M,
  31         TDA10046_XTAL_16M,
  32 };
  33
  34 enum tda10046_agc {
  35         TDA10046_AGC_DEFAULT,           /* original configuration */
  36         TDA10046_AGC_IFO_AUTO_NEG,      /* IF AGC only, automatic, negtive */
  37         TDA10046_AGC_IFO_AUTO_POS,      /* IF AGC only, automatic, positive */
  38         TDA10046_AGC_TDA827X,           /* IF AGC only, special setup for tda827x */
  39 };
  40
  41 /* Many (hybrid) boards use GPIO 1 and 3
  42         GPIO1   analog - dvb switch
  43         GPIO3   firmware eeprom address switch
  44 */
  45 enum tda10046_gpio {
  46         TDA10046_GPTRI  = 0x00,         /* All GPIOs tristate */
  47         TDA10046_GP00   = 0x40,         /* GPIO3=0, GPIO1=0 */
  48         TDA10046_GP01   = 0x42,         /* GPIO3=0, GPIO1=1 */
  49         TDA10046_GP10   = 0x48,         /* GPIO3=1, GPIO1=0 */
  50         TDA10046_GP11   = 0x4a,         /* GPIO3=1, GPIO1=1 */
  51         TDA10046_GP00_I = 0x80,         /* GPIO3=0, GPIO1=0, invert in sleep mode*/
  52         TDA10046_GP01_I = 0x82,         /* GPIO3=0, GPIO1=1, invert in sleep mode */
  53         TDA10046_GP10_I = 0x88,         /* GPIO3=1, GPIO1=0, invert in sleep mode */
  54         TDA10046_GP11_I = 0x8a,         /* GPIO3=1, GPIO1=1, invert in sleep mode */
  55 };
  56
  57 enum tda10046_if {
  58         TDA10046_FREQ_3617,             /* original config, 36,166 MHZ */
  59         TDA10046_FREQ_3613,             /* 36,13 MHZ */
  60         TDA10046_FREQ_045,              /* low IF, 4.0, 4.5, or 5.0 MHZ */
  61         TDA10046_FREQ_052,              /* low IF, 5.1667 MHZ for tda9889 */
  62 };
  63
  64 enum tda10046_tsout {
  65         TDA10046_TS_PARALLEL  = 0x00,   /* parallel transport stream, default */
  66         TDA10046_TS_SERIAL    = 0x01,   /* serial transport stream */
  67 };
  68
  69 struct tda1004x_config
  70 {
  71         /* the demodulator's i2c address */
  72         u8 demod_address;
  73
  74         /* does the "inversion" need inverted? */
  75         u8 invert;
  76
  77         /* Does the OCLK signal need inverted? */
  78         u8 invert_oclk;
  79
  80         /* parallel or serial transport stream */
  81         enum tda10046_tsout ts_mode;
  82
  83         /* Xtal frequency, 4 or 16MHz*/
  84         enum tda10046_xtal xtal_freq;
  85
  86         /* IF frequency */
  87         enum tda10046_if if_freq;
  88
  89         /* AGC configuration */
  90         enum tda10046_agc agc_config;
  91
  92         /* setting of GPIO1 and 3 */
  93         enum tda10046_gpio gpio_config;
  94
  95         /* slave address and configuration of the tuner */
  96         u8 tuner_address;
  97         u8 antenna_switch;
  98
  99         /* if the board uses another I2c Bridge (tda8290), its address */
 100         u8 i2c_gate;
 101
 102         /* request firmware for device */
 103         int (*request_firmware)(struct dvb_frontend* fe, const struct firmware **fw, char* name);
 104 };
 105
 106 enum tda1004x_demod {
 107         TDA1004X_DEMOD_TDA10045,
 108         TDA1004X_DEMOD_TDA10046,
 109 };
 110
 111 struct tda1004x_state {
 112         struct i2c_adapter* i2c;
 113         const struct tda1004x_config* config;
 114         struct dvb_frontend frontend;
 115
 116         /* private demod data */
 117         enum tda1004x_demod demod_type;
 118 };
 119
 120 #if IS_ENABLED(CONFIG_DVB_TDA1004X)
 121 extern struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
 122                                             struct i2c_adapter* i2c);
 123
 124 extern struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
 125                                             struct i2c_adapter* i2c);
 126 #else
 127 static inline struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
 128                                             struct i2c_adapter* i2c)
 129 {
 130         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 131         return NULL;
 132 }
 133 static inline struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
 134                                             struct i2c_adapter* i2c)
 135 {
 136         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 137         return NULL;
 138 }
 139 #endif // CONFIG_DVB_TDA1004X
 140
 141 static inline int tda1004x_writereg(struct dvb_frontend *fe, u8 reg, u8 val) {
 142         int r = 0;
 143         u8 buf[] = {reg, val};
 144         if (fe->ops.write)
 145                 r = fe->ops.write(fe, buf, 2);
 146         return r;
 147 }
 148
 149 #endif // TDA1004X_H