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78 lines
2.3 KiB
Diff
78 lines
2.3 KiB
Diff
From de5f4660856350ac43f642bb7c5adf063fc68287 Mon Sep 17 00:00:00 2001
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From: Kurt Mahan <kmahan@freescale.com>
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Date: Mon, 10 Dec 2007 13:15:33 -0700
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Subject: [PATCH] Fix to allow playback at other than 44.1.
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LTIBName: m5445x-audio-rates
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Signed-off-by: Kurt Mahan <kmahan@freescale.com>
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---
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drivers/spi/ssi_audio.c | 34 ++++++++++++++++++++++++----------
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1 files changed, 24 insertions(+), 10 deletions(-)
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--- a/drivers/spi/ssi_audio.c
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+++ b/drivers/spi/ssi_audio.c
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@@ -34,7 +34,6 @@
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#define SOUND_DEVICE_NAME "sound"
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#define DRIVER_NAME "ssi_audio"
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-
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/* #define AUDIO_DEBUG */
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#ifdef CONFIG_MMU
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@@ -315,24 +314,36 @@ static inline void disable_ssi(void)
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}
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/* Audio CODEC initialization */
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-/* TODO: also the SSI frequency/dividers must be adjusted */
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static void adjust_codec_speed(void) {
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#ifdef AUDIO_DEBUG
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printk(DRIVER_NAME ":adjust_codec_speed: %d\n", audio_device->speed);
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#endif
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-
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- if (audio_device->speed == 8000) {
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+ disable_ssi();
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+ switch (audio_device->speed) {
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+ case 8000:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(255);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_8KHZ);
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- } else if (audio_device->speed == 16000) {
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+ break;
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+ case 16000:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(129);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_16KHZ);
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- } else if (audio_device->speed == 22000) {
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+ break;
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+ case 22000:
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+ case 22050:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(94);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_22KHZ);
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- } else if (audio_device->speed == 44000 || audio_device->speed == 44100) {
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+ break;
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+ case 44000:
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+ case 44100:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(47);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_44KHZ);
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- } else if (audio_device->speed == 48000) {
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+ break;
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+ case 48000:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(42);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_48KHZ);
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- } else {
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- /* default 44KHz */
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+ break;
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+ default:
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+ MCF_CCM_CDR = MCF_CCM_CDR_SSIDIV(47);
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codec_write(CODEC_SAMPLE_RATE_REG,CODEC_SAMPLE_44KHZ);
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}
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}
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@@ -712,6 +723,9 @@ static int ssi_audio_ioctl(struct inode
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case SNDCTL_DSP_SAMPLESIZE:
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if (access_ok(VERIFY_READ, (void *) arg, sizeof(val))) {
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get_user(val, (unsigned long *) arg);
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+#ifdef AUDIO_DEBUG
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+ printk(DRIVER_NAME ":ssi_audio_ioctl: SNDCTL_DSP_SAMPLESIZE: %d\n", val);
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+#endif
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ssi_audio_txdrain();
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ssi_audio_setsamplesize(val);
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} else {
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