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