1 files changed, 185 insertions, 20 deletions

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 1305f7ca02c3..8dab82d7d19d 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -36,22 +36,61 @@ MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard.");
 static unsigned int channels_list[10] = {1, 2, 4, 6, 8, 10, 12, 14, 16, 999999};
 static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800, 100, 1);
 
+
+
 static int get_firmware(const struct firmware **fw_entry,
-                        const struct firmware *frm, struct echoaudio *chip)
+                        struct echoaudio *chip, const short fw_index)
 {
         int err;
         char name[30];
-        DE_ACT(("firmware requested: %s\n", frm->data));
-        snprintf(name, sizeof(name), "ea/%s", frm->data);
-        if ((err = request_firmware(fw_entry, name, pci_device(chip))) < 0)
+
+#ifdef CONFIG_PM
+        if (chip->fw_cache[fw_index]) {
+                DE_ACT(("firmware requested: %s is cached\n", card_fw[fw_index].data));
+                *fw_entry = chip->fw_cache[fw_index];
+                return 0;
+        }
+#endif
+
+        DE_ACT(("firmware requested: %s\n", card_fw[fw_index].data));
+        snprintf(name, sizeof(name), "ea/%s", card_fw[fw_index].data);
+        err = request_firmware(fw_entry, name, pci_device(chip));
+        if (err < 0)
                 snd_printk(KERN_ERR "get_firmware(): Firmware not available (%d)\n", err);
+#ifdef CONFIG_PM
+        else
+                chip->fw_cache[fw_index] = *fw_entry;
+#endif
         return err;
 }
 
+
+
 static void free_firmware(const struct firmware *fw_entry)
 {
+#ifdef CONFIG_PM
+        DE_ACT(("firmware not released (kept in cache)\n"));
+#else
         release_firmware(fw_entry);
         DE_ACT(("firmware released\n"));
+#endif
+}
+
+
+
+static void free_firmware_cache(struct echoaudio *chip)
+{
+#ifdef CONFIG_PM
+        int i;
+
+        for (i = 0; i < 8 ; i++)
+                if (chip->fw_cache[i]) {
+                        release_firmware(chip->fw_cache[i]);
+                        DE_ACT(("release_firmware(%d)\n", i));
+                }
+
+        DE_ACT(("firmware_cache released\n"));
+#endif
 }
 
 
@@ -714,6 +753,8 @@ static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 
         spin_lock(&chip->lock);
         switch (cmd) {
+        case SNDRV_PCM_TRIGGER_RESUME:
+                DE_ACT(("pcm_trigger resume\n"));
         case SNDRV_PCM_TRIGGER_START:
         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
                 DE_ACT(("pcm_trigger start\n"));
@@ -737,6 +778,8 @@ static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
                 err = start_transport(chip, channelmask,
                                       chip->pipe_cyclic_mask);
                 break;
+        case SNDRV_PCM_TRIGGER_SUSPEND:
+                DE_ACT(("pcm_trigger suspend\n"));
         case SNDRV_PCM_TRIGGER_STOP:
                 DE_ACT(("pcm_trigger stop\n"));
                 for (i = 0; i < DSP_MAXPIPES; i++) {
@@ -1821,7 +1864,9 @@ static irqreturn_t snd_echo_interrupt(int irq, void *dev_id)
         /* The hardware doesn't tell us which substream caused the irq,
         thus we have to check all running substreams. */
         for (ss = 0; ss < DSP_MAXPIPES; ss++) {
-                if ((substream = chip->substream[ss])) {
+                substream = chip->substream[ss];
+                if (substream && ((struct audiopipe *)substream->runtime->
+                                private_data)->state == PIPE_STATE_STARTED) {
                         period = pcm_pointer(substream) /
                                 substream->runtime->period_size;
                         if (period != chip->last_period[ss]) {
@@ -1874,6 +1919,7 @@ static int snd_echo_free(struct echoaudio *chip)
         pci_disable_device(chip->pci);
 
         /* release chip data */
+        free_firmware_cache(chip);
         kfree(chip);
         DE_INIT(("Chip freed.\n"));
         return 0;
@@ -1911,18 +1957,27 @@ static __devinit int snd_echo_create(struct snd_card *card,
                 return err;
         pci_set_master(pci);
 
-        /* allocate a chip-specific data */
-        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-        if (!chip) {
-                pci_disable_device(pci);
-                return -ENOMEM;
+        /* Allocate chip if needed */
+        if (!*rchip) {
+                chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+                if (!chip) {
+                        pci_disable_device(pci);
+                        return -ENOMEM;
+                }
+                DE_INIT(("chip=%p\n", chip));
+                spin_lock_init(&chip->lock);
+                chip->card = card;
+                chip->pci = pci;
+                chip->irq = -1;
+                atomic_set(&chip->opencount, 0);
+                mutex_init(&chip->mode_mutex);
+                chip->can_set_rate = 1;
+        } else {
+                /* If this was called from the resume function, chip is
+                 * already allocated and it contains current card settings.
+                 */
+                chip = *rchip;
         }
-        DE_INIT(("chip=%p\n", chip));
-
-        spin_lock_init(&chip->lock);
-        chip->card = card;
-        chip->pci = pci;
-        chip->irq = -1;
 
         /* PCI resource allocation */
         chip->dsp_registers_phys = pci_resource_start(pci, 0);
@@ -1962,7 +2017,9 @@ static __devinit int snd_echo_create(struct snd_card *card,
         chip->comm_page = (struct comm_page *)chip->commpage_dma_buf.area;
 
         err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
-        if (err) {
+        if (err >= 0)
+                err = set_mixer_defaults(chip);
+        if (err < 0) {
                 DE_INIT(("init_hw err=%d\n", err));
                 snd_echo_free(chip);
                 return err;
@@ -1973,9 +2030,6 @@ static __devinit int snd_echo_create(struct snd_card *card,
                 snd_echo_free(chip);
                 return err;
         }
-        atomic_set(&chip->opencount, 0);
-        mutex_init(&chip->mode_mutex);
-        chip->can_set_rate = 1;
         *rchip = chip;
         /* Init done ! */
         return 0;
@@ -2008,6 +2062,7 @@ static int __devinit snd_echo_probe(struct pci_dev *pci,
 
         snd_card_set_dev(card, &pci->dev);
 
+        chip = NULL;    /* Tells snd_echo_create to allocate chip */
         if ((err = snd_echo_create(card, pci, &chip)) < 0) {
                 snd_card_free(card);
                 return err;
@@ -2147,6 +2202,112 @@ ctl_error:
 
 
 
+#if defined(CONFIG_PM)
+
+static int snd_echo_suspend(struct pci_dev *pci, pm_message_t state)
+{
+        struct echoaudio *chip = pci_get_drvdata(pci);
+
+        DE_INIT(("suspend start\n"));
+        snd_pcm_suspend_all(chip->analog_pcm);
+        snd_pcm_suspend_all(chip->digital_pcm);
+
+#ifdef ECHOCARD_HAS_MIDI
+        /* This call can sleep */
+        if (chip->midi_out)
+                snd_echo_midi_output_trigger(chip->midi_out, 0);
+#endif
+        spin_lock_irq(&chip->lock);
+        if (wait_handshake(chip)) {
+                spin_unlock_irq(&chip->lock);
+                return -EIO;
+        }
+        clear_handshake(chip);
+        if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0) {
+                spin_unlock_irq(&chip->lock);
+                return -EIO;
+        }
+        spin_unlock_irq(&chip->lock);
+
+        chip->dsp_code = NULL;
+        free_irq(chip->irq, chip);
+        chip->irq = -1;
+        pci_save_state(pci);
+        pci_disable_device(pci);
+
+        DE_INIT(("suspend done\n"));
+        return 0;
+}
+
+
+
+static int snd_echo_resume(struct pci_dev *pci)
+{
+        struct echoaudio *chip = pci_get_drvdata(pci);
+        struct comm_page *commpage, *commpage_bak;
+        u32 pipe_alloc_mask;
+        int err;
+
+        DE_INIT(("resume start\n"));
+        pci_restore_state(pci);
+        commpage_bak = kmalloc(sizeof(struct echoaudio), GFP_KERNEL);
+        commpage = chip->comm_page;
+        memcpy(commpage_bak, commpage, sizeof(struct comm_page));
+
+        err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
+        if (err < 0) {
+                kfree(commpage_bak);
+                DE_INIT(("resume init_hw err=%d\n", err));
+                snd_echo_free(chip);
+                return err;
+        }
+        DE_INIT(("resume init OK\n"));
+
+        /* Temporarily set chip->pipe_alloc_mask=0 otherwise
+         * restore_dsp_settings() fails.
+         */
+        pipe_alloc_mask = chip->pipe_alloc_mask;
+        chip->pipe_alloc_mask = 0;
+        err = restore_dsp_rettings(chip);
+        chip->pipe_alloc_mask = pipe_alloc_mask;
+        if (err < 0) {
+                kfree(commpage_bak);
+                return err;
+        }
+        DE_INIT(("resume restore OK\n"));
+
+        memcpy(&commpage->audio_format, &commpage_bak->audio_format,
+                sizeof(commpage->audio_format));
+        memcpy(&commpage->sglist_addr, &commpage_bak->sglist_addr,
+                sizeof(commpage->sglist_addr));
+        memcpy(&commpage->midi_output, &commpage_bak->midi_output,
+                sizeof(commpage->midi_output));
+        kfree(commpage_bak);
+
+        if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
+                        ECHOCARD_NAME, chip)) {
+                snd_echo_free(chip);
+                snd_printk(KERN_ERR "cannot grab irq\n");
+                return -EBUSY;
+        }
+        chip->irq = pci->irq;
+        DE_INIT(("resume irq=%d\n", chip->irq));
+
+#ifdef ECHOCARD_HAS_MIDI
+        if (chip->midi_input_enabled)
+                enable_midi_input(chip, TRUE);
+        if (chip->midi_out)
+                snd_echo_midi_output_trigger(chip->midi_out, 1);
+#endif
+
+        DE_INIT(("resume done\n"));
+        return 0;
+}
+
+#endif /* CONFIG_PM */
+
+
+
 static void __devexit snd_echo_remove(struct pci_dev *pci)
 {
         struct echoaudio *chip;
@@ -2169,6 +2330,10 @@ static struct pci_driver driver = {
         .id_table = snd_echo_ids,
         .probe = snd_echo_probe,
         .remove = __devexit_p(snd_echo_remove),
+#ifdef CONFIG_PM
+        .suspend = snd_echo_suspend,
+        .resume = snd_echo_resume,
+#endif /* CONFIG_PM */
 };