Merge branch 'for-linus' of git://linux-nfs.org/~bfields/linux

[linux-2.6-omap-h63xx.git] / drivers / ssb / main.c

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index c0cbdba07aee52d341b68f40368d4e050f136e12..7cf8851286b54a7592412510a0130dc86e626bfe 100644 (file)
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -189,7 +189,7 @@ int ssb_bus_suspend(struct ssb_bus *bus)
 }
 EXPORT_SYMBOL(ssb_bus_suspend);
 
-#ifdef CONFIG_SSB_PCIHOST
+#ifdef CONFIG_SSB_SPROM
 int ssb_devices_freeze(struct ssb_bus *bus)
 {
        struct ssb_device *dev;
@@ -275,7 +275,7 @@ int ssb_devices_thaw(struct ssb_bus *bus)
 
        return 0;
 }
-#endif /* CONFIG_SSB_PCIHOST */
+#endif /* CONFIG_SSB_SPROM */
 
 static void ssb_device_shutdown(struct device *dev)
 {
@@ -462,15 +462,18 @@ static int ssb_devices_register(struct ssb_bus *bus)
 #ifdef CONFIG_SSB_PCIHOST
                        sdev->irq = bus->host_pci->irq;
                        dev->parent = &bus->host_pci->dev;
+                       sdev->dma_dev = &bus->host_pci->dev;
 #endif
                        break;
                case SSB_BUSTYPE_PCMCIA:
 #ifdef CONFIG_SSB_PCMCIAHOST
                        sdev->irq = bus->host_pcmcia->irq.AssignedIRQ;
                        dev->parent = &bus->host_pcmcia->dev;
+                       sdev->dma_dev = &bus->host_pcmcia->dev;
 #endif
                        break;
                case SSB_BUSTYPE_SSB:
+                       sdev->dma_dev = dev;
                        break;
                }
 
@@ -555,6 +558,55 @@ static u32 ssb_ssb_read32(struct ssb_device *dev, u16 offset)
        return readl(bus->mmio + offset);
 }
 
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_ssb_block_read(struct ssb_device *dev, void *buffer,
+                              size_t count, u16 offset, u8 reg_width)
+{
+       struct ssb_bus *bus = dev->bus;
+       void __iomem *addr;
+
+       offset += dev->core_index * SSB_CORE_SIZE;
+       addr = bus->mmio + offset;
+
+       switch (reg_width) {
+       case sizeof(u8): {
+               u8 *buf = buffer;
+
+               while (count) {
+                       *buf = __raw_readb(addr);
+                       buf++;
+                       count--;
+               }
+               break;
+       }
+       case sizeof(u16): {
+               __le16 *buf = buffer;
+
+               SSB_WARN_ON(count & 1);
+               while (count) {
+                       *buf = (__force __le16)__raw_readw(addr);
+                       buf++;
+                       count -= 2;
+               }
+               break;
+       }
+       case sizeof(u32): {
+               __le32 *buf = buffer;
+
+               SSB_WARN_ON(count & 3);
+               while (count) {
+                       *buf = (__force __le32)__raw_readl(addr);
+                       buf++;
+                       count -= 4;
+               }
+               break;
+       }
+       default:
+               SSB_WARN_ON(1);
+       }
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
 static void ssb_ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
 {
        struct ssb_bus *bus = dev->bus;
@@ -579,6 +631,55 @@ static void ssb_ssb_write32(struct ssb_device *dev, u16 offset, u32 value)
        writel(value, bus->mmio + offset);
 }
 
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_ssb_block_write(struct ssb_device *dev, const void *buffer,
+                               size_t count, u16 offset, u8 reg_width)
+{
+       struct ssb_bus *bus = dev->bus;
+       void __iomem *addr;
+
+       offset += dev->core_index * SSB_CORE_SIZE;
+       addr = bus->mmio + offset;
+
+       switch (reg_width) {
+       case sizeof(u8): {
+               const u8 *buf = buffer;
+
+               while (count) {
+                       __raw_writeb(*buf, addr);
+                       buf++;
+                       count--;
+               }
+               break;
+       }
+       case sizeof(u16): {
+               const __le16 *buf = buffer;
+
+               SSB_WARN_ON(count & 1);
+               while (count) {
+                       __raw_writew((__force u16)(*buf), addr);
+                       buf++;
+                       count -= 2;
+               }
+               break;
+       }
+       case sizeof(u32): {
+               const __le32 *buf = buffer;
+
+               SSB_WARN_ON(count & 3);
+               while (count) {
+                       __raw_writel((__force u32)(*buf), addr);
+                       buf++;
+                       count -= 4;
+               }
+               break;
+       }
+       default:
+               SSB_WARN_ON(1);
+       }
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
 /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
 static const struct ssb_bus_ops ssb_ssb_ops = {
        .read8          = ssb_ssb_read8,
@@ -587,6 +688,10 @@ static const struct ssb_bus_ops ssb_ssb_ops = {
        .write8         = ssb_ssb_write8,
        .write16        = ssb_ssb_write16,
        .write32        = ssb_ssb_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+       .block_read     = ssb_ssb_block_read,
+       .block_write    = ssb_ssb_block_write,
+#endif
 };
 
 static int ssb_fetch_invariants(struct ssb_bus *bus,
@@ -1062,15 +1167,14 @@ EXPORT_SYMBOL(ssb_dma_translation);
 
 int ssb_dma_set_mask(struct ssb_device *ssb_dev, u64 mask)
 {
-       struct device *dev = ssb_dev->dev;
+       struct device *dma_dev = ssb_dev->dma_dev;
 
 #ifdef CONFIG_SSB_PCIHOST
-       if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI &&
-           !dma_supported(dev, mask))
-               return -EIO;
+       if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI)
+               return dma_set_mask(dma_dev, mask);
 #endif
-       dev->coherent_dma_mask = mask;
-       dev->dma_mask = &dev->coherent_dma_mask;
+       dma_dev->coherent_dma_mask = mask;
+       dma_dev->dma_mask = &dma_dev->coherent_dma_mask;
 
        return 0;
 }
@@ -1088,6 +1192,12 @@ int ssb_bus_may_powerdown(struct ssb_bus *bus)
                goto out;
 
        cc = &bus->chipco;
+
+       if (!cc->dev)
+               goto out;
+       if (cc->dev->id.revision < 5)
+               goto out;
+
        ssb_chipco_set_clockmode(cc, SSB_CLKMODE_SLOW);
        err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0);
        if (err)