[ALSA] ad1848 - Add PM support
Modules: AD1848 driver
Add PM support to ad1848 support code.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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 @@
}
#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 @@
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 @@
return err;
}
+ chip->suspend = snd_ad1848_suspend;
+ chip->resume = snd_ad1848_resume;
+
*rchip = chip;
return 0;
}