diff options
Diffstat (limited to 'drivers/media/dvb-frontends/cxd2820r.h')
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2820r.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cxd2820r.h b/drivers/media/dvb-frontends/cxd2820r.h new file mode 100644 index 0000000000..4aa6cf4fb9 --- /dev/null +++ b/drivers/media/dvb-frontends/cxd2820r.h @@ -0,0 +1,128 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Sony CXD2820R demodulator driver + * + * Copyright (C) 2010 Antti Palosaari <crope@iki.fi> + */ + + +#ifndef CXD2820R_H +#define CXD2820R_H + +#include <linux/dvb/frontend.h> + +#define CXD2820R_GPIO_D (0 << 0) /* disable */ +#define CXD2820R_GPIO_E (1 << 0) /* enable */ +#define CXD2820R_GPIO_O (0 << 1) /* output */ +#define CXD2820R_GPIO_I (1 << 1) /* input */ +#define CXD2820R_GPIO_L (0 << 2) /* output low */ +#define CXD2820R_GPIO_H (1 << 2) /* output high */ + +#define CXD2820R_TS_SERIAL 0x08 +#define CXD2820R_TS_SERIAL_MSB 0x28 +#define CXD2820R_TS_PARALLEL 0x30 +#define CXD2820R_TS_PARALLEL_MSB 0x70 + +/* + * I2C address: 0x6c, 0x6d + */ + +/** + * struct cxd2820r_platform_data - Platform data for the cxd2820r driver + * @ts_mode: TS mode. + * @ts_clk_inv: TS clock inverted. + * @if_agc_polarity: IF AGC polarity. + * @spec_inv: Input spectrum inverted. + * @gpio_chip_base: GPIO. + * @get_dvb_frontend: Get DVB frontend. + */ +struct cxd2820r_platform_data { + u8 ts_mode; + bool ts_clk_inv; + bool if_agc_polarity; + bool spec_inv; + int **gpio_chip_base; + + struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *); +/* private: For legacy media attach wrapper. Do not set value. */ + bool attach_in_use; +}; + +/** + * struct cxd2820r_config - configuration for cxd2020r demod + * + * @i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C + * address automatically from master address. + * Default: none, must set. Values: 0x6c, 0x6d. + * @ts_mode: TS output mode. Default: none, must set. Values: FIXME? + * @ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1. + * @if_agc_polarity: Default: 0. Values: 0, 1 + * @spec_inv: Spectrum inversion. Default: 0. Values: 0, 1. + */ +struct cxd2820r_config { + /* Demodulator I2C address. + * Driver determines DVB-C slave I2C address automatically from master + * address. + * Default: none, must set + * Values: 0x6c, 0x6d + */ + u8 i2c_address; + + /* TS output mode. + * Default: none, must set. + * Values: + */ + u8 ts_mode; + + /* TS clock inverted. + * Default: 0 + * Values: 0, 1 + */ + bool ts_clock_inv; + + /* IF AGC polarity. + * Default: 0 + * Values: 0, 1 + */ + bool if_agc_polarity; + + /* Spectrum inversion. + * Default: 0 + * Values: 0, 1 + */ + bool spec_inv; +}; + + +#if IS_REACHABLE(CONFIG_DVB_CXD2820R) +/** + * cxd2820r_attach - Attach a cxd2820r demod + * + * @config: pointer to &struct cxd2820r_config with demod configuration. + * @i2c: i2c adapter to use. + * @gpio_chip_base: if zero, disables GPIO setting. Otherwise, if + * CONFIG_GPIOLIB is set dynamically allocate + * gpio base; if is not set, use its value to + * setup the GPIO pins. + * + * return: FE pointer on success, NULL on failure. + */ +extern struct dvb_frontend *cxd2820r_attach( + const struct cxd2820r_config *config, + struct i2c_adapter *i2c, + int *gpio_chip_base +); +#else +static inline struct dvb_frontend *cxd2820r_attach( + const struct cxd2820r_config *config, + struct i2c_adapter *i2c, + int *gpio_chip_base +) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} + +#endif + +#endif /* CXD2820R_H */ |