// SPDX-License-Identifier: GPL-2.0-only /* * Miro PCM20 radio driver for Linux radio support * (c) 1998 Ruurd Reitsma <[email protected]> * Thanks to Norberto Pellici for the ACI device interface specification * The API part is based on the radiotrack driver by M. Kirkwood * This driver relies on the aci mixer provided by the snd-miro * ALSA driver. * Look there for further info... * * From the original miro RDS sources: * * (c) 2001 Robert Siemer <[email protected]> * * Many thanks to Fred Seidel <[email protected]>, the * designer of the RDS decoder hardware. With his help * I was able to code this driver. * Thanks also to Norberto Pellicci, Dominic Mounteney * <[email protected]> and www.teleauskunft.de * for good hints on finding Fred. It was somewhat hard * to locate him here in Germany... [: * * This code has been reintroduced and converted to use * the new V4L2 RDS API by: * * Hans Verkuil <[email protected]> */ #include <linux/module.h> #include <linux/init.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/videodev2.h> #include <linux/kthread.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> #include <sound/aci.h> #define RDS_DATASHIFT … #define RDS_DATAMASK … #define RDS_BUSYMASK … #define RDS_CLOCKMASK … #define RDS_DATA(x) … #define RDS_STATUS … #define RDS_STATIONNAME … #define RDS_TEXT … #define RDS_ALTFREQ … #define RDS_TIMEDATE … #define RDS_PI_CODE … #define RDS_PTYTATP … #define RDS_RESET … #define RDS_RXVALUE … static int radio_nr = …; module_param(radio_nr, int, 0); MODULE_PARM_DESC(…) …; struct pcm20 { … }; static struct pcm20 pcm20_card = …; static int rds_waitread(struct snd_miro_aci *aci) { … } static int rds_rawwrite(struct snd_miro_aci *aci, u8 byte) { … } static int rds_write(struct snd_miro_aci *aci, u8 byte) { … } static int rds_readcycle_nowait(struct snd_miro_aci *aci) { … } static int rds_readcycle(struct snd_miro_aci *aci) { … } static int rds_ack(struct snd_miro_aci *aci) { … } static int rds_cmd(struct snd_miro_aci *aci, u8 cmd, u8 databuffer[], u8 datasize) { … } static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq) { … } static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *v) { … } static bool sanitize(char *p, int size) { … } 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_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { … } static int vidioc_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { … } static int pcm20_s_ctrl(struct v4l2_ctrl *ctrl) { … } static int pcm20_thread(void *data) { … } static int pcm20_open(struct file *file) { … } static int pcm20_release(struct file *file) { … } static const struct v4l2_file_operations pcm20_fops = …; static const struct v4l2_ioctl_ops pcm20_ioctl_ops = …; static const struct v4l2_ctrl_ops pcm20_ctrl_ops = …; static int __init pcm20_init(void) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; static void __exit pcm20_cleanup(void) { … } module_init(…) …; module_exit(pcm20_cleanup);
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