diff options
author | Graeme Gregory <graeme@openmoko.org> | 2008-04-30 14:26:45 -0400 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2008-04-30 13:38:34 -0400 |
commit | fd403dc84f29aee613d13bde5656ba74cdee1e7b (patch) | |
tree | 44e318e8e62f7c5f03c3d06a577bf1dd48cdd54c /sound/soc/s3c24xx/neo1973_wm8753.c | |
parent | 443590e6f1823cd4bc1199cc658074bc3e30acbf (diff) |
[ALSA] soc - neo1973_wm8753.c add suspend and shutdown hooks for lm4857 chip
Patch taken from the openmoko bugtracker
http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=781
This patch adds Suspend/Resume and Shutdown support for the lm4857 to
the driver.
Signed-off-by: Graeme Gregory <graeme@openmoko.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/soc/s3c24xx/neo1973_wm8753.c')
-rw-r--r-- | sound/soc/s3c24xx/neo1973_wm8753.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sound/soc/s3c24xx/neo1973_wm8753.c b/sound/soc/s3c24xx/neo1973_wm8753.c index c8caddffc42d..0e9d1c5f2484 100644 --- a/sound/soc/s3c24xx/neo1973_wm8753.c +++ b/sound/soc/s3c24xx/neo1973_wm8753.c | |||
@@ -616,6 +616,35 @@ static int lm4857_i2c_attach(struct i2c_adapter *adap) | |||
616 | return i2c_probe(adap, &addr_data, lm4857_amp_probe); | 616 | return i2c_probe(adap, &addr_data, lm4857_amp_probe); |
617 | } | 617 | } |
618 | 618 | ||
619 | static u8 lm4857_state; | ||
620 | |||
621 | static int lm4857_suspend(struct i2c_client *dev, pm_message_t state) | ||
622 | { | ||
623 | dev_dbg(&dev->dev, "lm4857_suspend\n"); | ||
624 | lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf; | ||
625 | if (lm4857_state) { | ||
626 | lm4857_regs[LM4857_CTRL] &= 0xf0; | ||
627 | lm4857_write_regs(); | ||
628 | } | ||
629 | return 0; | ||
630 | } | ||
631 | |||
632 | static int lm4857_resume(struct i2c_client *dev) | ||
633 | { | ||
634 | if (lm4857_state) { | ||
635 | lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f); | ||
636 | lm4857_write_regs(); | ||
637 | } | ||
638 | return 0; | ||
639 | } | ||
640 | |||
641 | static void lm4857_shutdown(struct i2c_client *dev) | ||
642 | { | ||
643 | dev_dbg(&dev->dev, "lm4857_shutdown\n"); | ||
644 | lm4857_regs[LM4857_CTRL] &= 0xf0; | ||
645 | lm4857_write_regs(); | ||
646 | } | ||
647 | |||
619 | /* corgi i2c codec control layer */ | 648 | /* corgi i2c codec control layer */ |
620 | static struct i2c_driver lm4857_i2c_driver = { | 649 | static struct i2c_driver lm4857_i2c_driver = { |
621 | .driver = { | 650 | .driver = { |
@@ -623,6 +652,9 @@ static struct i2c_driver lm4857_i2c_driver = { | |||
623 | .owner = THIS_MODULE, | 652 | .owner = THIS_MODULE, |
624 | }, | 653 | }, |
625 | .id = I2C_DRIVERID_LM4857, | 654 | .id = I2C_DRIVERID_LM4857, |
655 | .suspend = lm4857_suspend, | ||
656 | .resume = lm4857_resume, | ||
657 | .shutdown = lm4857_shutdown, | ||
626 | .attach_adapter = lm4857_i2c_attach, | 658 | .attach_adapter = lm4857_i2c_attach, |
627 | .detach_client = lm4857_i2c_detach, | 659 | .detach_client = lm4857_i2c_detach, |
628 | .command = NULL, | 660 | .command = NULL, |