// SPDX-License-Identifier: GPL-2.0-or-later /* * driver/media/radio/radio-tea5764.c * * Driver for TEA5764 radio chip for linux 2.6. * This driver is for TEA5764 chip from NXP, used in EZX phones from Motorola. * The I2C protocol is used for communicate with chip. * * Based in radio-tea5761.c Copyright (C) 2005 Nokia Corporation * * Copyright (c) 2008 Fabio Belavenuto <[email protected]> * * History: * 2008-12-06 Fabio Belavenuto <[email protected]> * initial code * * TODO: * add platform_data support for IRQs platform dependencies * add RDS support */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/init.h> /* Initdata */ #include <linux/videodev2.h> /* kernel radio structs */ #include <linux/i2c.h> /* I2C */ #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #define DRIVER_VERSION … #define DRIVER_AUTHOR … #define DRIVER_DESC … #define PINFO(format, ...) … #define PWARN(format, ...) … #define PDEBUG(format, ...) … /* Frequency limits in MHz -- these are European values. For Japanese devices, that would be 76000 and 91000. */ #define FREQ_MIN … #define FREQ_MAX … #define FREQ_MUL … /* TEA5764 registers */ #define TEA5764_MANID … #define TEA5764_CHIPID … #define TEA5764_INTREG_BLMSK … #define TEA5764_INTREG_FRRMSK … #define TEA5764_INTREG_LEVMSK … #define TEA5764_INTREG_IFMSK … #define TEA5764_INTREG_BLMFLAG … #define TEA5764_INTREG_FRRFLAG … #define TEA5764_INTREG_LEVFLAG … #define TEA5764_INTREG_IFFLAG … #define TEA5764_FRQSET_SUD … #define TEA5764_FRQSET_SM … #define TEA5764_TNCTRL_PUPD1 … #define TEA5764_TNCTRL_PUPD0 … #define TEA5764_TNCTRL_BLIM … #define TEA5764_TNCTRL_SWPM … #define TEA5764_TNCTRL_IFCTC … #define TEA5764_TNCTRL_AFM … #define TEA5764_TNCTRL_SMUTE … #define TEA5764_TNCTRL_SNC … #define TEA5764_TNCTRL_MU … #define TEA5764_TNCTRL_SSL1 … #define TEA5764_TNCTRL_SSL0 … #define TEA5764_TNCTRL_HLSI … #define TEA5764_TNCTRL_MST … #define TEA5764_TNCTRL_SWP … #define TEA5764_TNCTRL_DTC … #define TEA5764_TNCTRL_AHLSI … #define TEA5764_TUNCHK_LEVEL(x) … #define TEA5764_TUNCHK_IFCNT(x) … #define TEA5764_TUNCHK_TUNTO … #define TEA5764_TUNCHK_LD … #define TEA5764_TUNCHK_STEREO … #define TEA5764_TESTREG_TRIGFR … struct tea5764_regs { … } __attribute__ ((packed)); struct tea5764_write_regs { … } __attribute__ ((packed)); #ifdef CONFIG_RADIO_TEA5764_XTAL #define RADIO_TEA5764_XTAL … #else #define RADIO_TEA5764_XTAL … #endif static int radio_nr = …; static int use_xtal = …; struct tea5764_device { … }; /* I2C code related */ static int tea5764_i2c_read(struct tea5764_device *radio) { … } static int tea5764_i2c_write(struct tea5764_device *radio) { … } static void tea5764_power_up(struct tea5764_device *radio) { … } static void tea5764_power_down(struct tea5764_device *radio) { … } static void tea5764_set_freq(struct tea5764_device *radio, int freq) { … } static int tea5764_get_freq(struct tea5764_device *radio) { … } /* tune an frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ static void tea5764_tune(struct tea5764_device *radio, int freq) { … } static void tea5764_set_audout_mode(struct tea5764_device *radio, int audmode) { … } static int tea5764_get_audout_mode(struct tea5764_device *radio) { … } static void tea5764_mute(struct tea5764_device *radio, int on) { … } /* V4L2 vidioc */ static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *v) { … } static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) { … } static int vidioc_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *v) { … } static int vidioc_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { … } static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { … } static int tea5764_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops tea5764_ctrl_ops = …; /* File system interface */ static const struct v4l2_file_operations tea5764_fops = …; static const struct v4l2_ioctl_ops tea5764_ioctl_ops = …; /* V4L2 interface */ static const struct video_device tea5764_radio_template = …; /* I2C probe: check if the device exists and register with v4l if it is */ static int tea5764_i2c_probe(struct i2c_client *client) { … } static void tea5764_i2c_remove(struct i2c_client *client) { … } /* I2C subsystem interface */ static const struct i2c_device_id tea5764_id[] = …; MODULE_DEVICE_TABLE(i2c, tea5764_id); static struct i2c_driver tea5764_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …; MODULE_VERSION(…); module_param(use_xtal, int, 0); MODULE_PARM_DESC(…) …; module_param(radio_nr, int, 0); MODULE_PARM_DESC(…) …;
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