drivers/media/dvb-frontends/cxd2820r.h

   1 /*
   2  * Sony CXD2820R demodulator driver
   3  *
   4  * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
   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  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License along
  17  *    with this program; if not, write to the Free Software Foundation, Inc.,
  18  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21
  22 #ifndef CXD2820R_H
  23 #define CXD2820R_H
  24
  25 #include <linux/dvb/frontend.h>
  26
  27 #define CXD2820R_GPIO_D (0 << 0) /* disable */
  28 #define CXD2820R_GPIO_E (1 << 0) /* enable */
  29 #define CXD2820R_GPIO_O (0 << 1) /* output */
  30 #define CXD2820R_GPIO_I (1 << 1) /* input */
  31 #define CXD2820R_GPIO_L (0 << 2) /* output low */
  32 #define CXD2820R_GPIO_H (1 << 2) /* output high */
  33
  34 #define CXD2820R_TS_SERIAL        0x08
  35 #define CXD2820R_TS_SERIAL_MSB    0x28
  36 #define CXD2820R_TS_PARALLEL      0x30
  37 #define CXD2820R_TS_PARALLEL_MSB  0x70
  38
  39 /*
  40  * I2C address: 0x6c, 0x6d
  41  */
  42
  43 /**
  44  * struct cxd2820r_platform_data - Platform data for the cxd2820r driver
  45  * @ts_mode: TS mode.
  46  * @ts_clk_inv: TS clock inverted.
  47  * @if_agc_polarity: IF AGC polarity.
  48  * @spec_inv: Input spectrum inverted.
  49  * @gpio_chip_base: GPIO.
  50  * @get_dvb_frontend: Get DVB frontend.
  51  */
  52 struct cxd2820r_platform_data {
  53         u8 ts_mode;
  54         bool ts_clk_inv;
  55         bool if_agc_polarity;
  56         bool spec_inv;
  57         int **gpio_chip_base;
  58
  59         struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
  60 /* private: For legacy media attach wrapper. Do not set value. */
  61         bool attach_in_use;
  62 };
  63
  64 /**
  65  * struct cxd2820r_config - configuration for cxd2020r demod
  66  *
  67  * @i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C
  68  *               address automatically from master address.
  69  *               Default: none, must set. Values: 0x6c, 0x6d.
  70  * @ts_mode:    TS output mode. Default: none, must set. Values: FIXME?
  71  * @ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1.
  72  * @if_agc_polarity: Default: 0. Values: 0, 1
  73  * @spec_inv:   Spectrum inversion. Default: 0. Values: 0, 1.
  74  */
  75 struct cxd2820r_config {
  76         /* Demodulator I2C address.
  77          * Driver determines DVB-C slave I2C address automatically from master
  78          * address.
  79          * Default: none, must set
  80          * Values: 0x6c, 0x6d
  81          */
  82         u8 i2c_address;
  83
  84         /* TS output mode.
  85          * Default: none, must set.
  86          * Values:
  87          */
  88         u8 ts_mode;
  89
  90         /* TS clock inverted.
  91          * Default: 0
  92          * Values: 0, 1
  93          */
  94         bool ts_clock_inv;
  95
  96         /* IF AGC polarity.
  97          * Default: 0
  98          * Values: 0, 1
  99          */
 100         bool if_agc_polarity;
 101
 102         /* Spectrum inversion.
 103          * Default: 0
 104          * Values: 0, 1
 105          */
 106         bool spec_inv;
 107 };
 108
 109
 110 #if IS_REACHABLE(CONFIG_DVB_CXD2820R)
 111 /**
 112  * Attach a cxd2820r demod
 113  *
 114  * @config: pointer to &struct cxd2820r_config with demod configuration.
 115  * @i2c: i2c adapter to use.
 116  * @gpio_chip_base: if zero, disables GPIO setting. Otherwise, if
 117  *                  CONFIG_GPIOLIB is set dynamically allocate
 118  *                  gpio base; if is not set, use its value to
 119  *                  setup the GPIO pins.
 120  *
 121  * return: FE pointer on success, NULL on failure.
 122  */
 123 extern struct dvb_frontend *cxd2820r_attach(
 124         const struct cxd2820r_config *config,
 125         struct i2c_adapter *i2c,
 126         int *gpio_chip_base
 127 );
 128 #else
 129 static inline struct dvb_frontend *cxd2820r_attach(
 130         const struct cxd2820r_config *config,
 131         struct i2c_adapter *i2c,
 132         int *gpio_chip_base
 133 )
 134 {
 135         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 136         return NULL;
 137 }
 138
 139 #endif
 140
 141 #endif /* CXD2820R_H */