target/linux/brcm47xx/patches-3.10/114-MIPS-BCM47xx-Setup-and-register-serial-early.patch

   1 From 9be402f069cc259ad5795b77567d66c4e7f6bef6 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 18 Jul 2010 14:59:24 +0200
   4 Subject: [PATCH 4/6] MIPS: BCM47xx: Setup and register serial early
   5
   6 Swap the first and second serial if console=ttyS1 was set.
   7 Set it up and register it for early serial support.
   8
   9 This patch has been in OpenWRT for a long time.
  10
  11 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  12 ---
  13  arch/mips/bcm47xx/setup.c |   39 ++++++++++++++++++++++++++++++++++++++-
  14  1 files changed, 38 insertions(+), 1 deletions(-)
  15
  16 --- a/arch/mips/bcm47xx/setup.c
  17 +++ b/arch/mips/bcm47xx/setup.c
  18 @@ -31,6 +31,8 @@
  19  #include <linux/ssb/ssb.h>
  20  #include <linux/ssb/ssb_embedded.h>
  21  #include <linux/bcma/bcma_soc.h>
  22 +#include <linux/serial.h>
  23 +#include <linux/serial_8250.h>
  24  #include <asm/bootinfo.h>
  25  #include <asm/prom.h>
  26  #include <asm/reboot.h>
  27 @@ -123,6 +125,31 @@ static int bcm47xx_get_invariants(struct
  28         return 0;
  29  }
  30
  31 +#ifdef CONFIG_SERIAL_8250
  32 +static void __init bcm47xx_early_serial_setup(struct ssb_mipscore *mcore)
  33 +{
  34 +       int i;
  35 +
  36 +       for (i = 0; i < mcore->nr_serial_ports; i++) {
  37 +               struct ssb_serial_port *port = &(mcore->serial_ports[i]);
  38 +               struct uart_port s;
  39 +
  40 +               memset(&s, 0, sizeof(s));
  41 +               s.line = i;
  42 +               s.mapbase = (unsigned int) port->regs;
  43 +               s.membase = port->regs;
  44 +               s.irq = port->irq + 2;
  45 +               s.uartclk = port->baud_base;
  46 +               s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
  47 +               s.iotype = SERIAL_IO_MEM;
  48 +               s.regshift = port->reg_shift;
  49 +
  50 +               early_serial_setup(&s);
  51 +       }
  52 +       printk(KERN_DEBUG "Serial init done.\n");
  53 +}
  54 +#endif
  55 +
  56  static void __init bcm47xx_register_ssb(void)
  57  {
  58         int err;
  59 @@ -152,6 +179,10 @@ static void __init bcm47xx_register_ssb(
  60                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
  61                 }
  62         }
  63 +
  64 +#ifdef CONFIG_SERIAL_8250
  65 +       bcm47xx_early_serial_setup(mcore);
  66 +#endif
  67  }
  68  #endif
  69