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Commit 7b566054 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
Browse files

[ALSA] vx-driver - Fix the calculation of frequency parameter 



Digigram VX core
Fixed the calculation of frequency parameter of vx boards.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent fb92e6f0

sound/drivers/vx/vx_uer.c

+18 −28
Original line number Diff line number Diff line
@@ -162,34 +162,24 @@ static int vx_read_uer_status(vx_core_t *chip, int *mode) 


static int vx_calc_clock_from_freq(vx_core_t *chip, int freq)

{

#define XX_FECH48000                    0x0000004B

#define XX_FECH32000                    0x00000171

#define XX_FECH24000                    0x0000024B

#define XX_FECH16000                    0x00000371

#define XX_FECH12000                    0x0000044B

#define XX_FECH8000                     0x00000571

#define XX_FECH44100                    0x0000007F

#define XX_FECH29400                    0x0000016F

#define XX_FECH22050                    0x0000027F

#define XX_FECH14000                    0x000003EF

#define XX_FECH11025                    0x0000047F

#define XX_FECH7350                     0x000005BF



	switch (freq) {

	case 48000:     return XX_FECH48000;

	case 44100:     return XX_FECH44100;

	case 32000:     return XX_FECH32000;

	case 29400:     return XX_FECH29400;

	case 24000:     return XX_FECH24000;

	case 22050:     return XX_FECH22050;

	case 16000:     return XX_FECH16000;

	case 14000:     return XX_FECH14000;

	case 12000:     return XX_FECH12000;

	case 11025:     return XX_FECH11025;

	case 8000:      return XX_FECH8000;

	case 7350:      return XX_FECH7350;

	default:        return freq;   /* The value is already correct */

	}

	int hexfreq;



	snd_assert(freq > 0, return 0);



	hexfreq = (28224000 * 10) / freq;

	hexfreq = (hexfreq + 5) / 10;



	/* max freq = 55125 Hz */

	snd_assert(hexfreq > 0x00000200, return 0);



	if (hexfreq <= 0x03ff)

		return hexfreq - 0x00000201;

	if (hexfreq <= 0x07ff) 

		return (hexfreq / 2) - 1;

	if (hexfreq <= 0x0fff)

		return (hexfreq / 4) + 0x000001ff;



	return 0x5fe; 	/* min freq = 6893 Hz */

}