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Commit fdfbaf69 authored by Markus Bollinger's avatar Markus Bollinger Committed by Takashi Iwai
Browse files

ALSA: pcxhr: Add LTC support 



add LTC (linear timecode) read function via proc interface to the pcxhr driver

Signed-off-by: default avatarMarkus Bollinger <bollinger@digigram.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent d7dc9e32

sound/pci/pcxhr/pcxhr.c

+63 −0
Original line number Diff line number Diff line
@@ -1368,6 +1368,67 @@ static void pcxhr_proc_gpo_write(struct snd_info_entry *entry, 
	}

}



/* Access to the results of the CMD_GET_TIME_CODE RMH */

#define TIME_CODE_VALID_MASK	0x00800000

#define TIME_CODE_NEW_MASK	0x00400000

#define TIME_CODE_BACK_MASK	0x00200000

#define TIME_CODE_WAIT_MASK	0x00100000



/* Values for the CMD_MANAGE_SIGNAL RMH */

#define MANAGE_SIGNAL_TIME_CODE	0x01

#define MANAGE_SIGNAL_MIDI	0x02



/* linear time code read proc*/

static void pcxhr_proc_ltc(struct snd_info_entry *entry,

			   struct snd_info_buffer *buffer)

{

	struct snd_pcxhr *chip = entry->private_data;

	struct pcxhr_mgr *mgr = chip->mgr;

	struct pcxhr_rmh rmh;

	unsigned int ltcHrs, ltcMin, ltcSec, ltcFrm;

	int err;

	/* commands available when embedded DSP is running */

	if (!(mgr->dsp_loaded & (1 << PCXHR_FIRMWARE_DSP_MAIN_INDEX))) {

		snd_iprintf(buffer, "no firmware loaded\n");

		return;

	}

	if (!mgr->capture_ltc) {

		pcxhr_init_rmh(&rmh, CMD_MANAGE_SIGNAL);

		rmh.cmd[0] |= MANAGE_SIGNAL_TIME_CODE;

		err = pcxhr_send_msg(mgr, &rmh);

		if (err) {

			snd_iprintf(buffer, "ltc not activated (%d)\n", err);

			return;

		}

		if (mgr->is_hr_stereo)

			hr222_manage_timecode(mgr, 1);

		else

			pcxhr_write_io_num_reg_cont(mgr, REG_CONT_VALSMPTE,

						    REG_CONT_VALSMPTE, NULL);

		mgr->capture_ltc = 1;

	}

	pcxhr_init_rmh(&rmh, CMD_GET_TIME_CODE);

	err = pcxhr_send_msg(mgr, &rmh);

	if (err) {

		snd_iprintf(buffer, "ltc read error (err=%d)\n", err);

		return ;

	}

	ltcHrs = 10*((rmh.stat[0] >> 8) & 0x3) + (rmh.stat[0] & 0xf);

	ltcMin = 10*((rmh.stat[1] >> 16) & 0x7) + ((rmh.stat[1] >> 8) & 0xf);

	ltcSec = 10*(rmh.stat[1] & 0x7) + ((rmh.stat[2] >> 16) & 0xf);

	ltcFrm = 10*((rmh.stat[2] >> 8) & 0x3) + (rmh.stat[2] & 0xf);



	snd_iprintf(buffer, "timecode: %02u:%02u:%02u-%02u\n",

			    ltcHrs, ltcMin, ltcSec, ltcFrm);

	snd_iprintf(buffer, "raw: 0x%04x%06x%06x\n", rmh.stat[0] & 0x00ffff,

			    rmh.stat[1] & 0xffffff, rmh.stat[2] & 0xffffff);

	/*snd_iprintf(buffer, "dsp ref time: 0x%06x%06x\n",

			    rmh.stat[3] & 0xffffff, rmh.stat[4] & 0xffffff);*/

	if (!(rmh.stat[0] & TIME_CODE_VALID_MASK)) {

		snd_iprintf(buffer, "warning: linear timecode not valid\n");

	}

}



static void __devinit pcxhr_proc_init(struct snd_pcxhr *chip)

{

	struct snd_info_entry *entry;
@@ -1383,6 +1444,8 @@ static void __devinit pcxhr_proc_init(struct snd_pcxhr *chip) 
		entry->c.text.write = pcxhr_proc_gpo_write;

		entry->mode |= S_IWUSR;

	}

	if (!snd_card_proc_new(chip->card, "ltc", &entry))

		snd_info_set_text_ops(entry, chip, pcxhr_proc_ltc);

}

/* end of proc interface */

sound/pci/pcxhr/pcxhr.h

+1 −0
Original line number Diff line number Diff line
@@ -103,6 +103,7 @@ struct pcxhr_mgr { 
	unsigned int board_has_mic:1; /* if 1 the board has microphone input */

	unsigned int board_aes_in_192k:1;/* if 1 the aes input plugs do support 192kHz */

	unsigned int mono_capture:1; /* if 1 the board does mono capture */

	unsigned int capture_ltc:1; /* if 1 the board captures LTC input */



	struct snd_dma_buffer hostport;

sound/pci/pcxhr/pcxhr_core.c

+4 −0
Original line number Diff line number Diff line
@@ -504,6 +504,8 @@ static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = { 
[CMD_FORMAT_STREAM_IN] =		{ 0x870000, 0, RMH_SSIZE_FIXED },

[CMD_STREAM_SAMPLE_COUNT] =		{ 0x902000, 2, RMH_SSIZE_FIXED },

[CMD_AUDIO_LEVEL_ADJUST] =		{ 0xc22000, 0, RMH_SSIZE_FIXED },

[CMD_GET_TIME_CODE] =			{ 0x060000, 5, RMH_SSIZE_FIXED },

[CMD_MANAGE_SIGNAL] =			{ 0x0f0000, 0, RMH_SSIZE_FIXED },

};



#ifdef CONFIG_SND_DEBUG_VERBOSE
@@ -533,6 +535,8 @@ static char* cmd_names[] = { 
[CMD_FORMAT_STREAM_IN] =		"CMD_FORMAT_STREAM_IN",

[CMD_STREAM_SAMPLE_COUNT] =		"CMD_STREAM_SAMPLE_COUNT",

[CMD_AUDIO_LEVEL_ADJUST] =		"CMD_AUDIO_LEVEL_ADJUST",

[CMD_GET_TIME_CODE] =			"CMD_GET_TIME_CODE",

[CMD_MANAGE_SIGNAL] =			"CMD_MANAGE_SIGNAL",

};

#endif

sound/pci/pcxhr/pcxhr_core.h

+3 −1
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ enum { 
	CMD_FORMAT_STREAM_IN,		/* cmd_len >= 4	stat_len = 0 */

	CMD_STREAM_SAMPLE_COUNT,	/* cmd_len = 2	stat_len = (2 * nb_stream) */

	CMD_AUDIO_LEVEL_ADJUST,		/* cmd_len = 3	stat_len = 0 */

	CMD_GET_TIME_CODE,		/* cmd_len = 1  stat_len = 5 */

	CMD_MANAGE_SIGNAL,		/* cmd_len = 1  stat_len = 0 */

	CMD_LAST_INDEX

};
@@ -116,7 +118,7 @@ int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh); 
#define IO_NUM_REG_OUT_ANA_LEVEL	20

#define IO_NUM_REG_IN_ANA_LEVEL		21





#define REG_CONT_VALSMPTE		0x000800

#define REG_CONT_UNMUTE_INPUTS		0x020000



/* parameters used with register IO_NUM_REG_STATUS */

sound/pci/pcxhr/pcxhr_mix22.c

+11 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ 
#define PCXHR_DSP_RESET_DSP	0x01

#define PCXHR_DSP_RESET_MUTE	0x02

#define PCXHR_DSP_RESET_CODEC	0x08

#define PCXHR_DSP_RESET_SMPTE	0x10

#define PCXHR_DSP_RESET_GPO_OFFSET	5

#define PCXHR_DSP_RESET_GPO_MASK	0x60
@@ -527,6 +528,16 @@ int hr222_write_gpo(struct pcxhr_mgr *mgr, int value) 
	return 0;

}



int hr222_manage_timecode(struct pcxhr_mgr *mgr, int enable)

{

	if (enable)

		mgr->dsp_reset |= PCXHR_DSP_RESET_SMPTE;

	else

		mgr->dsp_reset &= ~PCXHR_DSP_RESET_SMPTE;



	PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, mgr->dsp_reset);

	return 0;

}



int hr222_update_analog_audio_level(struct snd_pcxhr *chip,

				    int is_capture, int channel)