// SPDX-License-Identifier: GPL-2.0-or-later /* * Programming the mspx4xx sound processor family * * (c) 1997-2001 Gerd Knorr <[email protected]> * * what works and what doesn't: * * AM-Mono * Support for Hauppauge cards added (decoding handled by tuner) added by * Frederic Crozat <[email protected]> * * FM-Mono * should work. The stereo modes are backward compatible to FM-mono, * therefore FM-Mono should be always available. * * FM-Stereo (B/G, used in germany) * should work, with autodetect * * FM-Stereo (satellite) * should work, no autodetect (i.e. default is mono, but you can * switch to stereo -- untested) * * NICAM (B/G, L , used in UK, Scandinavia, Spain and France) * should work, with autodetect. Support for NICAM was added by * Pekka Pietikainen <[email protected]> * * TODO: * - better SAT support * * 980623 Thomas Sailer ([email protected]) * using soundcore instead of OSS */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/kthread.h> #include <linux/freezer.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/drv-intf/msp3400.h> #include <media/i2c/tvaudio.h> #include "msp3400-driver.h" /* ---------------------------------------------------------------------- */ MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; /* module parameters */ static int opmode = …; int msp_debug; /* msp_debug output */ bool msp_once; /* no continuous stereo monitoring */ bool msp_amsound; /* hard-wire AM sound at 6.5 Hz (france), the autoscan seems work well only with FM... */ int msp_standard = …; /* Override auto detect of audio msp_standard, if needed. */ bool msp_dolby; int msp_stereo_thresh = …; /* a2 threshold for stereo/bilingual (msp34xxg only) 0x00a0-0x03c0 */ /* read-only */ module_param(opmode, int, 0444); /* read-write */ module_param_named(once, msp_once, bool, 0644); module_param_named(debug, msp_debug, int, 0644); module_param_named(stereo_threshold, msp_stereo_thresh, int, 0644); module_param_named(standard, msp_standard, int, 0644); module_param_named(amsound, msp_amsound, bool, 0644); module_param_named(dolby, msp_dolby, bool, 0644); MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; /* ---------------------------------------------------------------------- */ /* control subaddress */ #define I2C_MSP_CONTROL … /* demodulator unit subaddress */ #define I2C_MSP_DEM … /* DSP unit subaddress */ #define I2C_MSP_DSP … /* ----------------------------------------------------------------------- */ /* functions for talking to the MSP3400C Sound processor */ int msp_reset(struct i2c_client *client) { … } static int msp_read(struct i2c_client *client, int dev, int addr) { … } int msp_read_dem(struct i2c_client *client, int addr) { … } int msp_read_dsp(struct i2c_client *client, int addr) { … } static int msp_write(struct i2c_client *client, int dev, int addr, int val) { … } int msp_write_dem(struct i2c_client *client, int addr, int val) { … } int msp_write_dsp(struct i2c_client *client, int addr, int val) { … } /* ----------------------------------------------------------------------- * * bits 9 8 5 - SCART DSP input Select: * 0 0 0 - SCART 1 to DSP input (reset position) * 0 1 0 - MONO to DSP input * 1 0 0 - SCART 2 to DSP input * 1 1 1 - Mute DSP input * * bits 11 10 6 - SCART 1 Output Select: * 0 0 0 - undefined (reset position) * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS) * 1 0 0 - MONO input to SCART 1 Output * 1 1 0 - SCART 1 DA to SCART 1 Output * 0 0 1 - SCART 2 DA to SCART 1 Output * 0 1 1 - SCART 1 Input to SCART 1 Output * 1 1 1 - Mute SCART 1 Output * * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART): * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position) * 0 1 0 - SCART 1 Input to SCART 2 Output * 1 0 0 - MONO input to SCART 2 Output * 0 0 1 - SCART 2 DA to SCART 2 Output * 0 1 1 - SCART 2 Input to SCART 2 Output * 1 1 0 - Mute SCART 2 Output * * Bits 4 to 0 should be zero. * ----------------------------------------------------------------------- */ static int scarts[3][9] = …; static char *scart_names[] = …; void msp_set_scart(struct i2c_client *client, int in, int out) { … } /* ------------------------------------------------------------------------ */ static void msp_wake_thread(struct i2c_client *client) { … } int msp_sleep(struct msp_state *state, int msec) { … } /* ------------------------------------------------------------------------ */ static int msp_s_ctrl(struct v4l2_ctrl *ctrl) { … } void msp_update_volume(struct msp_state *state) { … } /* --- v4l2 ioctls --- */ static int msp_s_radio(struct v4l2_subdev *sd) { … } static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq) { … } static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id) { … } static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id) { … } static int msp_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { … } static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) { … } static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt) { … } static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq) { … } static int msp_log_status(struct v4l2_subdev *sd) { … } #ifdef CONFIG_PM_SLEEP static int msp_suspend(struct device *dev) { … } static int msp_resume(struct device *dev) { … } #endif /* ----------------------------------------------------------------------- */ static const struct v4l2_ctrl_ops msp_ctrl_ops = …; static const struct v4l2_subdev_core_ops msp_core_ops = …; static const struct v4l2_subdev_video_ops msp_video_ops = …; static const struct v4l2_subdev_tuner_ops msp_tuner_ops = …; static const struct v4l2_subdev_audio_ops msp_audio_ops = …; static const struct v4l2_subdev_ops msp_ops = …; /* ----------------------------------------------------------------------- */ static const char * const opmode_str[] = …; static int msp_probe(struct i2c_client *client) { … } static void msp_remove(struct i2c_client *client) { … } /* ----------------------------------------------------------------------- */ static const struct dev_pm_ops msp3400_pm_ops = …; static const struct i2c_device_id msp_id[] = …; MODULE_DEVICE_TABLE(i2c, msp_id); static struct i2c_driver msp_driver = …; module_i2c_driver(…) …;
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