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authorTakashi Iwai <tiwai@suse.de>2005-11-17 16:57:48 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:28:10 +0100
commitc66d7f72569e304acc134b2561b148fe7c23c0f7 (patch)
tree5404f454238c7f3546eaa1f7d892b7c5a1b5e020
parent7a8fef1f95e563a93c7d70048b63c1ca20685a1b (diff)
downloadop-kernel-dev-c66d7f72569e304acc134b2561b148fe7c23c0f7.zip
op-kernel-dev-c66d7f72569e304acc134b2561b148fe7c23c0f7.tar.gz
[ALSA] ad1848 - Add PM support
Modules: AD1848 driver Add PM support to ad1848 support code. Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--include/sound/ad1848.h5
-rw-r--r--sound/isa/ad1848/ad1848_lib.c28
2 files changed, 20 insertions, 13 deletions
diff --git a/include/sound/ad1848.h b/include/sound/ad1848.h
index a038070..1a2759f 100644
--- a/include/sound/ad1848.h
+++ b/include/sound/ad1848.h
@@ -148,6 +148,11 @@ struct snd_ad1848 {
int dma_size;
int thinkpad_flag; /* Thinkpad CS4248 needs some extra help */
+#ifdef CONFIG_PM
+ void (*suspend)(struct snd_ad1848 *chip);
+ void (*resume)(struct snd_ad1848 *chip);
+#endif
+
spinlock_t reg_lock;
struct semaphore open_mutex;
};
diff --git a/sound/isa/ad1848/ad1848_lib.c b/sound/isa/ad1848/ad1848_lib.c
index 55ba32d..83764c9 100644
--- a/sound/isa/ad1848/ad1848_lib.c
+++ b/sound/isa/ad1848/ad1848_lib.c
@@ -24,7 +24,6 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
-#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
@@ -642,29 +641,30 @@ static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
}
#ifdef CONFIG_PM
-static int snd_ad1848_suspend(struct snd_card *card, pm_message_t state)
+static void snd_ad1848_suspend(struct snd_ad1848 *chip)
{
- struct snd_ad1848 *chip = card->pm_private_data;
-
snd_pcm_suspend_all(chip->pcm);
- /* FIXME: save registers? */
-
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 0);
-
- return 0;
}
-static int snd_ad1848_resume(struct snd_card *card)
+static void snd_ad1848_resume(struct snd_ad1848 *chip)
{
- struct snd_ad1848 *chip = card->pm_private_data;
+ int i;
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 1);
- /* FIXME: restore registers? */
+ /* clear any pendings IRQ */
+ inb(AD1848P(chip, STATUS));
+ outb(0, AD1848P(chip, STATUS));
+ mb();
- return 0;
+ snd_ad1848_mce_down(chip);
+ for (i = 0; i < 16; i++)
+ snd_ad1848_out(chip, i, chip->image[i]);
+ snd_ad1848_mce_up(chip);
+ snd_ad1848_mce_down(chip);
}
#endif /* CONFIG_PM */
@@ -919,7 +919,6 @@ int snd_ad1848_create(struct snd_card *card,
chip->thinkpad_flag = 1;
chip->hardware = AD1848_HW_DETECT; /* reset */
snd_ad1848_thinkpad_twiddle(chip, 1);
- snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
}
if (snd_ad1848_probe(chip) < 0) {
@@ -933,6 +932,9 @@ int snd_ad1848_create(struct snd_card *card,
return err;
}
+ chip->suspend = snd_ad1848_suspend;
+ chip->resume = snd_ad1848_resume;
+
*rchip = chip;
return 0;
}
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