ALSA: emu10k1: Emu10k2 32 bit DMA mode

[pandora-kernel.git] / sound / pci / emu10k1 / emu10k1_main.c

diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index 4675ed6..705e73e 100644 (file)
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -282,7 +282,7 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
        snd_emu10k1_ptr_write(emu, TCB, 0, 0);  /* taken from original driver */
        snd_emu10k1_ptr_write(emu, TCBS, 0, 4); /* taken from original driver */
 
-       silent_page = (emu->silent_page.addr << 1) | MAP_PTI_MASK;
+       silent_page = (emu->silent_page.addr << emu->address_mode) | (emu->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0);
        for (ch = 0; ch < NUM_G; ch++) {
                snd_emu10k1_ptr_write(emu, MAPA, ch, silent_page);
                snd_emu10k1_ptr_write(emu, MAPB, ch, silent_page);
@@ -348,6 +348,11 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
                outl(reg | A_IOCFG_GPOUT0, emu->port + A_IOCFG);
        }
 
+       if (emu->address_mode == 0) {
+               /* use 16M in 4G */
+               outl(inl(emu->port + HCFG) | HCFG_EXPANDED_MEM, emu->port + HCFG);
+       }
+
        return 0;
 }
 
@@ -1832,8 +1837,10 @@ int __devinit snd_emu10k1_create(struct snd_card *card,
 
        is_audigy = emu->audigy = c->emu10k2_chip;
 
+       /* set addressing mode */
+       emu->address_mode = is_audigy ? 0 : 1;
        /* set the DMA transfer mask */
-       emu->dma_mask = is_audigy ? AUDIGY_DMA_MASK : EMU10K1_DMA_MASK;
+       emu->dma_mask = emu->address_mode ? EMU10K1_DMA_MASK : AUDIGY_DMA_MASK;
        if (pci_set_dma_mask(pci, emu->dma_mask) < 0 ||
            pci_set_consistent_dma_mask(pci, emu->dma_mask) < 0) {
                snd_printk(KERN_ERR "architecture does not support PCI busmaster DMA with mask 0x%lx\n", emu->dma_mask);
@@ -1856,7 +1863,7 @@ int __devinit snd_emu10k1_create(struct snd_card *card,
 
        emu->max_cache_pages = max_cache_bytes >> PAGE_SHIFT;
        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
-                               32 * 1024, &emu->ptb_pages) < 0) {
+                               (emu->address_mode ? 32 : 16) * 1024, &emu->ptb_pages) < 0) {
                err = -ENOMEM;
                goto error;
        }
@@ -1955,8 +1962,8 @@ int __devinit snd_emu10k1_create(struct snd_card *card,
 
        /* Clear silent pages and set up pointers */
        memset(emu->silent_page.area, 0, PAGE_SIZE);
-       silent_page = emu->silent_page.addr << 1;
-       for (idx = 0; idx < MAXPAGES; idx++)
+       silent_page = emu->silent_page.addr << emu->address_mode;
+       for (idx = 0; idx < (emu->address_mode ? MAXPAGES1 : MAXPAGES0); idx++)
                ((u32 *)emu->ptb_pages.area)[idx] = cpu_to_le32(silent_page | idx);
 
        /* set up voice indices */