2  * ams-delta.c  --  SoC audio for Amstrad E3 (Delta) videophone
21  * 02110-1301 USA
33 #include <asm/mach-types.h>
35 #include <linux/platform_data/asoc-ti-mcbsp.h>
37 #include "omap-mcbsp.h"
60  * Controls, functional after the modem line discipline is activated.
67 /* Selection <-> pin translation */
101 	struct snd_soc_dapm_context *dapm = &card->dapm;  in ams_delta_set_audio_mode()
102 	struct soc_enum *control = (struct soc_enum *)kcontrol->private_value;  in ams_delta_set_audio_mode()
107 	if (!cx20442_codec->card->pop_time)  in ams_delta_set_audio_mode()
108 		return -EUNATCH;  in ams_delta_set_audio_mode()
110 	if (ucontrol->value.enumerated.item[0] >= control->items)  in ams_delta_set_audio_mode()
111 		return -EINVAL;  in ams_delta_set_audio_mode()
116 	pins = ams_delta_audio_mode_pins[ucontrol->value.enumerated.item[0]];  in ams_delta_set_audio_mode()
174 	struct snd_soc_dapm_context *dapm = &card->dapm;  in ams_delta_get_audio_mode()
196 		return -EINVAL;  in ams_delta_get_audio_mode()
198 	ucontrol->value.enumerated.item[0] = mode;  in ams_delta_get_audio_mode()
222 /* After we are able to control the codec over the modem,
249  * Modem line discipline, required for making above controls functional.
253 /* To actually apply any modem controlled configuration changes to the codec,
254  * we must connect codec DAI pins to the modem for a moment.  Be careful not
271 	/* Reconnect the codec DAI back from the modem to the CPU DAI  in cx81801_timeout()
283 		return -ENODEV;  in cx81801_open()
289 	tty->disc_data = cx20442_codec;  in cx81801_open()
294 		tty->disc_data = NULL;  in cx81801_open()
302 	struct snd_soc_component *component = tty->disc_data;  in cx81801_close()
303 	struct snd_soc_dapm_context *dapm = &component->card->dapm;  in cx81801_close()
340 	struct snd_soc_component *component = tty->disc_data;  in cx81801_receive()
347 	if (!component->card->pop_time) {  in cx81801_receive()
348 		/* First modem response, complete setup procedure */  in cx81801_receive()
360 			dev_warn(component->dev,  in cx81801_receive()
369 	for (c = &cp[count - 1]; c >= cp; c--) {  in cx81801_receive()
372 		/* Complete modem response received, apply config to codec */  in cx81801_receive()
380 		/* Apply config pulse by connecting the codec to the modem  in cx81801_receive()
410  * over the modem port.
416 /* Digital mute implemented using modem/CPU multiplexer.
460 	struct snd_soc_dai *codec_dai = rtd->codec_dai;  in ams_delta_cx20442_init()
461 	struct snd_soc_card *card = rtd->card;  in ams_delta_cx20442_init()
462 	struct snd_soc_dapm_context *dapm = &card->dapm;  in ams_delta_cx20442_init()
467 	cx20442_codec = rtd->codec_dai->component;  in ams_delta_cx20442_init()
469 	/* Add hook switch - can be used to control the codec from userspace  in ams_delta_cx20442_init()
474 		dev_warn(card->dev,  in ams_delta_cx20442_init()
478 		ret = snd_soc_jack_add_gpiods(card->dev, &ams_delta_hook_switch,  in ams_delta_cx20442_init()
482 			dev_warn(card->dev,  in ams_delta_cx20442_init()
487 	gpiod_modem_codec = devm_gpiod_get(card->dev, "modem_codec",  in ams_delta_cx20442_init()
490 		dev_warn(card->dev, "Failed to obtain modem_codec GPIO\n");  in ams_delta_cx20442_init()
495 	if (!codec_dai->driver->ops) {  in ams_delta_cx20442_init()
496 		codec_dai->driver->ops = &ams_delta_dai_ops;  in ams_delta_cx20442_init()
502 	/* Register optional line discipline for over the modem control */  in ams_delta_cx20442_init()
505 		dev_warn(card->dev,  in ams_delta_cx20442_init()
520 /* DAI glue - connects codec <--> CPU */
524 	.cpu_dai_name = "omap-mcbsp.1",
525 	.codec_dai_name = "cx20442-voice",
526 	.init = ams_delta_cx20442_init,
527 	.platform_name = "omap-mcbsp.1",
528 	.codec_name = "cx20442-codec",
549 /* Module init/exit */
555 	card->dev = &pdev->dev;  in ams_delta_probe()
559 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);  in ams_delta_probe()
560 		card->dev = NULL;  in ams_delta_probe()
571 		dev_warn(&pdev->dev,  in ams_delta_remove()
575 	card->dev = NULL;  in ams_delta_remove()
579 #define DRV_NAME "ams-delta-audio"