diff options
| author | Wallace Wang <r59996@freescale.com> | 2008-03-05 13:39:33 +0800 |
|---|---|---|
| committer | Daniel Schaeffer <daniel.schaeffer@timesys.com> | 2008-08-25 15:20:42 -0400 |
| commit | 8702458225431e3f20e9cd1085b464b8123da750 (patch) | |
| tree | a778bd4af97969b544345ce2527925aeb60f3912 /sound | |
| parent | 94eacb1c96a7584f04ffdd2948bd2cf4daa0e4f4 (diff) | |
ENGR00064717 MX31 3DS Audio Power Management
MX31 3DS audio power management support
Signed-off-by: Wallace Wang <r59996@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/arm/mxc-alsa-pmic.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sound/arm/mxc-alsa-pmic.c b/sound/arm/mxc-alsa-pmic.c index 1f745f3c3c5e..6392c596e8c6 100644 --- a/sound/arm/mxc-alsa-pmic.c +++ b/sound/arm/mxc-alsa-pmic.c @@ -1,5 +1,5 @@ /* - * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2004-2008 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -66,6 +66,8 @@ #include "mxc-alsa-pmic.h" #include "mxc-alsa-common.h" #include <linux/fs.h> +#include <linux/clk.h> + /* * PMIC driver buffer policy. * Customize here if the sound is not correct @@ -2784,6 +2786,7 @@ static int snd_card_mxc_audio_playback_open(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime; int stream_id = -1; int err; + audio_stream_t *s; PMIC_AUDIO_HANDLE temp_handle; int device = -1; @@ -2799,6 +2802,7 @@ static int snd_card_mxc_audio_playback_open(struct snd_pcm_substream *substream) stream_id = 3; } + s = &chip->s[stream_id]; err = -1; if (stream_id == 0) { @@ -2893,6 +2897,10 @@ static int snd_card_mxc_audio_playback_open(struct snd_pcm_substream *substream) audio_playback_dma_callback, stream_id)) < 0) goto exit_err; + + /* enable ssi clock */ + clk_enable(audio_data->ssi_clk[s->ssi]); + return 0; exit_err: #ifdef CONFIG_SND_MXC_PMIC_IRAM @@ -2968,6 +2976,8 @@ static int snd_card_mxc_audio_playback_close(struct snd_pcm_substream if (stream_id == 0) mxc_snd_pcm_iram_put(); #endif /*CONFIG_SND_MXC_PMIC_IRAM */ + /* disable ssi clock */ + clk_disable(audio_data->ssi_clk[ssi]); return 0; } @@ -3007,6 +3017,9 @@ static int snd_card_mxc_audio_capture_close(struct snd_pcm_substream *substream) chip->s[substream->pstr->stream].stream = NULL; + /* disable ssi clock */ + clk_disable(audio_data->ssi_clk[ssi]); + return 0; } @@ -3156,10 +3169,12 @@ static int snd_card_mxc_audio_capture_open(struct snd_pcm_substream *substream) int stream_id; int err; PMIC_AUDIO_HANDLE temp_handle; + audio_stream_t *s; chip = snd_pcm_substream_chip(substream); runtime = substream->runtime; stream_id = substream->pstr->stream; + s = &chip->s[stream_id]; err = -1; if ((audio_data->ssi_num == 1) @@ -3207,6 +3222,9 @@ static int snd_card_mxc_audio_capture_open(struct snd_pcm_substream *substream) return err; } + /* enable ssi clock */ + clk_enable(audio_data->ssi_clk[s->ssi]); + msleep(50); return 0; @@ -3824,6 +3842,12 @@ static int __init mxc_alsa_audio_probe(struct platform_device *pdev) static int mxc_alsa_audio_remove(struct platform_device *dev) { + if (audio_data->ssi_num == 1) { + clk_put(audio_data->ssi_clk[SSI1]); + } else { + clk_put(audio_data->ssi_clk[SSI1]); + clk_put(audio_data->ssi_clk[SSI2]); + } snd_card_free(mxc_audio->card); kfree(mxc_audio); platform_set_drvdata(dev, NULL); |