Update

[l4.git] / l4 / pkg / drivers-frst / uart / src / uart_pxa.cc

diff --git a/l4/pkg/drivers-frst/uart/src/uart_pxa.cc b/l4/pkg/drivers-frst/uart/src/uart_pxa.cc
deleted file mode 100644 (file)
index 01c5a75..0000000
--- a/l4/pkg/drivers-frst/uart/src/uart_pxa.cc
+++ /dev/null
@@ -1,158 +0,0 @@
-/*!
- * \file   uart_pxa.cc
- * \brief  PXA UART implementation
- *
- * \date   2008-01-04
- * \author Adam Lackorznynski <adam@os.inf.tu-dresden.de>
- *         Alexander Warg <alexander.warg@os.inf.tu-dresden.de>
- *
- */
-/*
- * (c) 2008-2009 Author(s)
- *     economic rights: Technische Universität Dresden (Germany)
- *
- * This file is part of TUD:OS and distributed under the terms of the
- * GNU General Public License 2.
- * Please see the COPYING-GPL-2 file for details.
- */
-#include "uart_pxa.h"
-#include "poll_timeout_counter.h"
-
-namespace L4
-{
-  enum Registers
-  {
-    TRB      = 0x00, // Transmit/Receive Buffer  (read/write)
-    BRD_LOW  = 0x00, // Baud Rate Divisor LSB if bit 7 of LCR is set  (read/write)
-    IER      = 0x01, // Interrupt Enable Register  (read/write)
-    BRD_HIGH = 0x01, // Baud Rate Divisor MSB if bit 7 of LCR is set  (read/write)
-    IIR      = 0x02, // Interrupt Identification Register  (read only)
-    FCR      = 0x02, // 16550 FIFO Control Register  (write only)
-    LCR      = 0x03, // Line Control Register  (read/write)
-    MCR      = 0x04, // Modem Control Register  (read/write)
-    LSR      = 0x05, // Line Status Register  (read only)
-    MSR      = 0x06, // Modem Status Register  (read only)
-    SPR      = 0x07, // Scratch Pad Register  (read/write)
-  };
-
-  enum
-  {
-    Base_ier_bits = 1 << 6, // pxa only?
-  };
-
-  bool Uart_16550::startup(Io_register_block const *regs)
-  {
-    _regs = regs;
-
-    char scratch, scratch2, scratch3;
-
-    scratch = _regs->read<unsigned char>(IER);
-    _regs->write<unsigned char>(IER, 0);
-
-    _regs->delay();
-
-    scratch2 = _regs->read<unsigned char>(IER);
-    _regs->write<unsigned char>(IER, 0xf);
-
-    _regs->delay();
-
-    scratch3 = _regs->read<unsigned char>(IER);
-    _regs->write<unsigned char>(IER, scratch);
-
-    if (!(scratch2 == 0x00 && scratch3 == 0x0f))
-      return false;  // this is not the uart
-
-    _regs->write<unsigned char>(IER, Base_ier_bits);/* disable all rs-232 interrupts */
-    _regs->write<unsigned char>(MCR, 0xb);          /* out2, rts, and dtr enabled */
-    _regs->write<unsigned char>(FCR, 7);            /* enable fifo + clear rcv+xmit fifo */
-    _regs->write<unsigned char>(LCR, 0);            /* clear line control register */
-
-    /* clearall interrupts */
-    _regs->read<unsigned char>(MSR); /* IRQID 0*/
-    _regs->read<unsigned char>(IIR); /* IRQID 1*/
-    _regs->read<unsigned char>(TRB); /* IRQID 2*/
-    _regs->read<unsigned char>(LSR); /* IRQID 3*/
-
-    Poll_timeout_counter i(5000000);
-    while (i.test(_regs->read<unsigned char>(LSR) & 1/*DATA READY*/))
-      _regs->read<unsigned char>(TRB);
-
-    return true;
-  }
-
-  void Uart_16550::shutdown()
-  {
-    _regs->write<unsigned char>(MCR, 6);
-    _regs->write<unsigned char>(FCR, 0);
-    _regs->write<unsigned char>(LCR, 0);
-    _regs->write<unsigned char>(IER, 0);
-  }
-
-  bool Uart_16550::change_mode(Transfer_mode m, Baud_rate r)
-  {
-    unsigned long old_lcr = _regs->read<unsigned char>(LCR);
-    if(r != BAUD_NC) {
-      unsigned short divisor = _base_rate / r;
-      _regs->write<unsigned char>(LCR, old_lcr | 0x80/*DLAB*/);
-      _regs->write<unsigned char>(TRB, divisor & 0x0ff);        /* BRD_LOW  */
-      _regs->write<unsigned char>(IER, (divisor >> 8) & 0x0ff); /* BRD_HIGH */
-      _regs->write<unsigned char>(LCR, old_lcr);
-    }
-    if (m != MODE_NC)
-      _regs->write<unsigned char>(LCR, m & 0x07f);
-
-    return true;
-  }
-
-  int Uart_16550::get_char(bool blocking) const
-  {
-    char old_ier, ch;
-
-    if (!blocking && !char_avail())
-      return -1;
-
-    old_ier = _regs->read<unsigned char>(IER);
-    _regs->write<unsigned char>(IER, old_ier & ~0xf);
-    while (!char_avail())
-      ;
-    ch = _regs->read<unsigned char>(TRB);
-    _regs->write<unsigned char>(IER, old_ier);
-    return ch;
-  }
-
-  int Uart_16550::char_avail() const
-  {
-    return _regs->read<unsigned char>(LSR) & 1; // DATA READY
-  }
-
-  void Uart_16550::out_char(char c) const
-  {
-    write(&c, 1);
-  }
-
-  int Uart_16550::write(char const *s, unsigned long count) const
-  {
-    /* disable uart irqs */
-    char old_ier;
-    unsigned i;
-    old_ier = _regs->read<unsigned char>(IER);
-    _regs->write<unsigned char>(IER, old_ier & ~0x0f);
-
-    /* transmission */
-    Poll_timeout_counter cnt(5000000);
-    for (i = 0; i < count; i++) {
-      cnt.set(5000000);
-      while (cnt.test(!(_regs->read<unsigned char>(LSR) & 0x20 /* THRE */)))
-        ;
-      _regs->write<unsigned char>(TRB, s[i]);
-    }
-
-    /* wait till everything is transmitted */
-    cnt.set(5000000);
-    while (cnt.test(!(_regs->read<unsigned char>(LSR) & 0x40 /* TSRE */)))
-      ;
-
-    _regs->write<unsigned char>(IER, old_ier);
-    return count;
-  }
-};