ALSA: ctxfi - Add PM support

Added the suspend/resume support to ctxfi driver.

The team tested on the following seems ok:
  AMD Athlon 64 3500+ / ASUS A8N-E / 512MB DDR ATI / Radeon X1300
  20k1 & 20k2 cards

Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com>
Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 63 insertions, 29 deletions

diff --git a/sound/pci/ctxfi/ctmixer.c b/sound/pci/ctxfi/ctmixer.c
index 666722d9de41..f26d7cd9db9f 100644
--- a/sound/pci/ctxfi/ctmixer.c
+++ b/sound/pci/ctxfi/ctmixer.c
@@ -462,6 +462,43 @@ do_digit_io_switch(struct ct_atc *atc, int state)
         return;
 }
 
+static void do_switch(struct ct_atc *atc, enum CTALSA_MIXER_CTL type, int state)
+{
+        struct ct_mixer *mixer = atc->mixer;
+
+        /* Do changes in mixer. */
+        if ((SWH_CAPTURE_START <= type) && (SWH_CAPTURE_END >= type)) {
+                if (state) {
+                        ct_mixer_recording_select(mixer,
+                                                  get_amixer_index(type));
+                } else {
+                        ct_mixer_recording_unselect(mixer,
+                                                    get_amixer_index(type));
+                }
+        }
+        /* Do changes out of mixer. */
+        if (state && (MIXER_LINEIN_C_S == type || MIXER_MIC_C_S == type))
+                do_line_mic_switch(atc, type);
+        else if (MIXER_WAVEF_P_S == type)
+                atc->line_front_unmute(atc, state);
+        else if (MIXER_WAVES_P_S == type)
+                atc->line_surround_unmute(atc, state);
+        else if (MIXER_WAVEC_P_S == type)
+                atc->line_clfe_unmute(atc, state);
+        else if (MIXER_WAVER_P_S == type)
+                atc->line_rear_unmute(atc, state);
+        else if (MIXER_LINEIN_P_S == type)
+                atc->line_in_unmute(atc, state);
+        else if (MIXER_SPDIFO_P_S == type)
+                atc->spdif_out_unmute(atc, state);
+        else if (MIXER_SPDIFI_P_S == type)
+                atc->spdif_in_unmute(atc, state);
+        else if (MIXER_DIGITAL_IO_S == type)
+                do_digit_io_switch(atc, state);
+
+        return;
+}
+
 static int ct_alsa_mix_switch_info(struct snd_kcontrol *kcontrol,
                                    struct snd_ctl_elem_info *uinfo)
 {
@@ -498,35 +535,7 @@ static int ct_alsa_mix_switch_put(struct snd_kcontrol *kcontrol,
                 return 0;
 
         set_switch_state(mixer, type, state);
-        /* Do changes in mixer. */
-        if ((SWH_CAPTURE_START <= type) && (SWH_CAPTURE_END >= type)) {
-                if (state) {
-                        ct_mixer_recording_select(mixer,
-                                                  get_amixer_index(type));
-                } else {
-                        ct_mixer_recording_unselect(mixer,
-                                                    get_amixer_index(type));
-                }
-        }
-        /* Do changes out of mixer. */
-        if (state && (MIXER_LINEIN_C_S == type || MIXER_MIC_C_S == type))
-                do_line_mic_switch(atc, type);
-        else if (MIXER_WAVEF_P_S == type)
-                atc->line_front_unmute(atc, state);
-        else if (MIXER_WAVES_P_S == type)
-                atc->line_surround_unmute(atc, state);
-        else if (MIXER_WAVEC_P_S == type)
-                atc->line_clfe_unmute(atc, state);
-        else if (MIXER_WAVER_P_S == type)
-                atc->line_rear_unmute(atc, state);
-        else if (MIXER_LINEIN_P_S == type)
-                atc->line_in_unmute(atc, state);
-        else if (MIXER_SPDIFO_P_S == type)
-                atc->spdif_out_unmute(atc, state);
-        else if (MIXER_SPDIFI_P_S == type)
-                atc->spdif_in_unmute(atc, state);
-        else if (MIXER_DIGITAL_IO_S == type)
-                do_digit_io_switch(atc, state);
+        do_switch(atc, type, state);
 
         return 1;
 }
@@ -1039,6 +1048,28 @@ mixer_set_input_right(struct ct_mixer *mixer,
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int mixer_resume(struct ct_mixer *mixer)
+{
+        int i, state;
+        struct amixer *amixer;
+
+        /* resume topology and volume gain. */
+        for (i = 0; i < NUM_CT_AMIXERS*CHN_NUM; i++) {
+                amixer = mixer->amixers[i];
+                amixer->ops->commit_write(amixer);
+        }
+
+        /* resume switch state. */
+        for (i = SWH_MIXER_START; i <= SWH_MIXER_END; i++) {
+                state = get_switch_state(mixer, i);
+                do_switch(mixer->atc, i, state);
+        }
+
+        return 0;
+}
+#endif
+
 int ct_mixer_destroy(struct ct_mixer *mixer)
 {
         struct sum_mgr *sum_mgr = (struct sum_mgr *)mixer->atc->rsc_mgrs[SUM];
@@ -1087,6 +1118,9 @@ int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer)
         mixer->get_output_ports = mixer_get_output_ports;
         mixer->set_input_left = mixer_set_input_left;
         mixer->set_input_right = mixer_set_input_right;
+#ifdef CONFIG_PM
+        mixer->resume = mixer_resume;
+#endif
 
         /* Allocate chip resources for mixer obj */
         err = ct_mixer_get_resources(mixer);