target/linux/leon/patches/010-apbuart_ampopts.patch

   1 From 8129fa5437f3fe5f95bac180a43cd5a856cebdf3 Mon Sep 17 00:00:00 2001
   2 From: Daniel Hellstrom <daniel@gaisler.com>
   3 Date: Wed, 20 Oct 2010 17:00:41 +0200
   4 Subject: [PATCH] Added support for ampopts in APBUART driver. Used in AMP systems.
   5
   6 Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
   7 ---
   8  drivers/serial/apbuart.c |    5 ++++-
   9  1 files changed, 4 insertions(+), 1 deletions(-)
  10
  11 --- a/drivers/serial/apbuart.c
  12 +++ b/drivers/serial/apbuart.c
  13 @@ -26,6 +26,7 @@
  14  #include <linux/of.h>
  15  #include <linux/of_device.h>
  16  #include <linux/of_platform.h>
  17 +#include <linux/of_irq.h>
  18  #include <linux/platform_device.h>
  19  #include <linux/io.h>
  20  #include <linux/serial_core.h>
  21 @@ -573,7 +574,6 @@ static int __devinit apbuart_probe(struc
  22         printk(KERN_INFO "grlib-apbuart at 0x%llx, irq %d\n",
  23                (unsigned long long) port->mapbase, port->irq);
  24         return 0;
  25 -
  26  }
  27
  28  static struct of_device_id __initdata apbuart_match[] = {
  29 @@ -620,9 +620,12 @@ static void grlib_apbuart_configure(void
  30                 int *vendor = (int *) of_get_property(np, "vendor", NULL);
  31                 int *device = (int *) of_get_property(np, "device", NULL);
  32                 int *irqs = (int *) of_get_property(np, "interrupts", NULL);
  33 +               int *ampopts = (int *) of_get_property(np, "ampopts", NULL);
  34                 regs = (struct amba_prom_registers *)
  35                     of_get_property(np, "reg", NULL);
  36
  37 +               if (ampopts && (*ampopts == 0))
  38 +                       continue; /* Ignore if used by another OS instance */
  39                 if (vendor)
  40                         v = *vendor;
  41                 if (device)