target/linux/ar7/patches-2.6.23/500-serial_kludge.patch

   1 Index: linux-2.6.23.17/drivers/serial/8250.c
   2 ===================================================================
   3 --- linux-2.6.23.17.orig/drivers/serial/8250.c
   4 +++ linux-2.6.23.17/drivers/serial/8250.c
   5 @@ -267,6 +267,13 @@ static const struct serial8250_config ua
   6                 .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
   7                 .flags          = UART_CAP_FIFO,
   8         },
   9 +       [PORT_AR7] = {
  10 +               .name           = "TI-AR7",
  11 +               .fifo_size      = 16,
  12 +               .tx_loadsz      = 16,
  13 +               .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
  14 +               .flags          = UART_CAP_FIFO | UART_CAP_AFE,
  15 +       },
  16  };
  17
  18  #if defined (CONFIG_SERIAL_8250_AU1X00)
  19 @@ -2455,7 +2462,11 @@ static void serial8250_console_putchar(s
  20  {
  21         struct uart_8250_port *up = (struct uart_8250_port *)port;
  22
  23 +#ifdef CONFIG_AR7
  24 +       wait_for_xmitr(up, BOTH_EMPTY);
  25 +#else
  26         wait_for_xmitr(up, UART_LSR_THRE);
  27 +#endif
  28         serial_out(up, UART_TX, ch);
  29  }
  30
  31 Index: linux-2.6.23.17/include/linux/serial_core.h
  32 ===================================================================
  33 --- linux-2.6.23.17.orig/include/linux/serial_core.h
  34 +++ linux-2.6.23.17/include/linux/serial_core.h
  35 @@ -40,6 +40,7 @@
  36  #define PORT_NS16550A  14
  37  #define PORT_XSCALE    15
  38  #define PORT_RM9000    16      /* PMC-Sierra RM9xxx internal UART */
  39 +#define PORT_AR7       16
  40  #define PORT_MAX_8250  16      /* max port ID */
  41
  42  /*
  43 Index: linux-2.6.23.17/include/linux/serialP.h
  44 ===================================================================
  45 --- linux-2.6.23.17.orig/include/linux/serialP.h
  46 +++ linux-2.6.23.17/include/linux/serialP.h
  47 @@ -135,6 +135,10 @@ struct rs_multiport_struct {
  48   * the interrupt line _up_ instead of down, so if we register the IRQ
  49   * while the UART is in that state, we die in an IRQ storm. */
  50  #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
  51 +#elif defined(CONFIG_AR7)
  52 +/* This is how it is set up by bootloader... */
  53 +#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1 \
  54 +                       | UART_MCR_RTS | UART_MCR_DTR)
  55  #else
  56  #define ALPHA_KLUDGE_MCR 0
  57  #endif