mwave-mwavedd: BKL pushdown

[pandora-kernel.git] / drivers / pnp / support.c

diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
index 61fe998..95b076c 100644 (file)
--- a/drivers/pnp/support.c
+++ b/drivers/pnp/support.c
@@ -1,33 +1,90 @@
 /*
- * support.c - provides standard pnp functions for the use of pnp protocol drivers,
+ * support.c - standard functions for the use of pnp protocol drivers
  *
  * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
- *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/ctype.h>
 #include <linux/pnp.h>
 #include "base.h"
 
 /**
- * pnp_is_active - Determines if a device is active based on its current resources
+ * pnp_is_active - Determines if a device is active based on its current
+ *     resources
  * @dev: pointer to the desired PnP device
- *
  */
-
-int pnp_is_active(struct pnp_dev * dev)
+int pnp_is_active(struct pnp_dev *dev)
 {
        if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
            !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
-           pnp_irq(dev, 0) == -1 &&
-           pnp_dma(dev, 0) == -1)
-               return 0;
+           pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
+               return 0;
        else
                return 1;
 }
 
+EXPORT_SYMBOL(pnp_is_active);
+
+/*
+ * Functionally similar to acpi_ex_eisa_id_to_string(), but that's
+ * buried in the ACPI CA, and we can't depend on it being present.
+ */
+void pnp_eisa_id_to_string(u32 id, char *str)
+{
+       id = be32_to_cpu(id);
+
+       /*
+        * According to the specs, the first three characters are five-bit
+        * compressed ASCII, and the left-over high order bit should be zero.
+        * However, the Linux ISAPNP code historically used six bits for the
+        * first character, and there seem to be IDs that depend on that,
+        * e.g., "nEC8241" in the Linux 8250_pnp serial driver and the
+        * FreeBSD sys/pc98/cbus/sio_cbus.c driver.
+        */
+       str[0] = 'A' + ((id >> 26) & 0x3f) - 1;
+       str[1] = 'A' + ((id >> 21) & 0x1f) - 1;
+       str[2] = 'A' + ((id >> 16) & 0x1f) - 1;
+       str[3] = hex_asc_hi(id >> 8);
+       str[4] = hex_asc_lo(id >> 8);
+       str[5] = hex_asc_hi(id);
+       str[6] = hex_asc_lo(id);
+       str[7] = '\0';
+}
+
+void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
+{
+#ifdef DEBUG
+       struct resource *res;
+       int i;
 
+       dev_dbg(&dev->dev, "current resources: %s\n", desc);
 
-EXPORT_SYMBOL(pnp_is_active);
+       for (i = 0; i < PNP_MAX_IRQ; i++) {
+               res = pnp_get_resource(dev, IORESOURCE_IRQ, i);
+               if (res && !(res->flags & IORESOURCE_UNSET))
+                       dev_dbg(&dev->dev, "  irq %lld flags %#lx\n",
+                               (unsigned long long) res->start, res->flags);
+       }
+       for (i = 0; i < PNP_MAX_DMA; i++) {
+               res = pnp_get_resource(dev, IORESOURCE_DMA, i);
+               if (res && !(res->flags & IORESOURCE_UNSET))
+                       dev_dbg(&dev->dev, "  dma %lld flags %#lx\n",
+                               (unsigned long long) res->start, res->flags);
+       }
+       for (i = 0; i < PNP_MAX_PORT; i++) {
+               res = pnp_get_resource(dev, IORESOURCE_IO, i);
+               if (res && !(res->flags & IORESOURCE_UNSET))
+                       dev_dbg(&dev->dev, "  io  %#llx-%#llx flags %#lx\n",
+                               (unsigned long long) res->start,
+                               (unsigned long long) res->end, res->flags);
+       }
+       for (i = 0; i < PNP_MAX_MEM; i++) {
+               res = pnp_get_resource(dev, IORESOURCE_MEM, i);
+               if (res && !(res->flags & IORESOURCE_UNSET))
+                       dev_dbg(&dev->dev, "  mem %#llx-%#llx flags %#lx\n",
+                               (unsigned long long) res->start,
+                               (unsigned long long) res->end, res->flags);
+       }
+#endif
+}