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 */ 142