target/linux/lantiq/patches-3.0/998-easy98000-asc1.patch

   1 activate serial driver for ASC1 if "use_asc1=x" is given on kernel commandline
   2 mux setup for pins is done via late_initcall, when the gpio driver is initialized
   3
   4 only implemented for EASY98000, generic version t.b.d.
   5 --- a/arch/mips/lantiq/falcon/devices.c
   6 +++ b/arch/mips/lantiq/falcon/devices.c
   7 @@ -75,6 +75,7 @@ void __init falcon_register_asc(int port
   8         case 1:
   9                 platform_device_register_simple("ltq_asc", 1,
  10                         falcon_asc1_resources, ARRAY_SIZE(falcon_asc1_resources));
  11 +               sys1_hw_activate(ACTS_ASC1_ACT);
  12                 break;
  13         default:
  14                 break;
  15 --- a/arch/mips/lantiq/falcon/mach-easy98000.c
  16 +++ b/arch/mips/lantiq/falcon/mach-easy98000.c
  17 @@ -15,6 +15,7 @@
  18  #include <linux/spi/spi.h>
  19  #include <linux/spi/spi_gpio.h>
  20  #include <linux/spi/eeprom.h>
  21 +#include <falcon/lantiq_soc.h>
  22
  23  #include "../machtypes.h"
  24
  25 @@ -206,9 +207,34 @@ static void __init easy98000_spi_gpio_in
  26         platform_device_register(&easy98000_spi_gpio_device);
  27  }
  28
  29 +static int register_asc1 = 0;
  30 +static int __init parse_asc1(char *p)
  31 +{
  32 +       register_asc1 = 1;
  33 +       return 0;
  34 +}
  35 +__setup("use_asc1", parse_asc1);
  36 +
  37 +#define MUXC_SIF_RX_PIN                112
  38 +#define MUXC_SIF_TX_PIN                113
  39 +
  40 +static int __init asc1_mux_setup(void)
  41 +{
  42 +       if (register_asc1) {
  43 +               if (ltq_gpio_request(MUXC_SIF_RX_PIN, 1, 1, 0, "asc1-rx"))
  44 +                       return -1;
  45 +               if (ltq_gpio_request(MUXC_SIF_TX_PIN, 1, 1, 1, "asc1-tx"))
  46 +                       return -1;
  47 +       }
  48 +       return 0;
  49 +}
  50 +late_initcall(asc1_mux_setup);
  51 +
  52  static void __init easy98000_init_common(void)
  53  {
  54         falcon_register_asc(0);
  55 +       if (register_asc1)
  56 +               falcon_register_asc(1);
  57         falcon_register_gpio();
  58         falcon_register_wdt();
  59         falcon_register_i2c();