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Diffstat (limited to 'c/src/lib/libbsp/arm/csb337/console/usart.c')
-rw-r--r--c/src/lib/libbsp/arm/csb337/console/usart.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/c/src/lib/libbsp/arm/csb337/console/usart.c b/c/src/lib/libbsp/arm/csb337/console/usart.c
deleted file mode 100644
index 23b877ce64..0000000000
--- a/c/src/lib/libbsp/arm/csb337/console/usart.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * Driver for AT91RM9200 USART ports
- */
-
-/*
- * COPYRIGHT (c) 2006-2009.
- * NCB - Sistemas Embarcados Ltda. (Brazil)
- * Fernando Nicodemos <fgnicodemos@terra.com.br>
- *
- * and
- *
- * COPYRIGHT (c) 1989-2009.
- * On-Line Applications Research Corporation (OAR).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
-*/
-
-#include <bsp.h>
-#include <rtems/libio.h>
-#include <termios.h>
-
-#include <at91rm9200.h>
-#include <at91rm9200_usart.h>
-#include <at91rm9200_pmc.h>
-#include <rtems/bspIo.h>
-#include <libchip/serial.h>
-#include <libchip/sersupp.h>
-
-/* static function prototypes */
-static int usart_first_open(int major, int minor, void *arg);
-static int usart_last_close(int major, int minor, void *arg);
-static int usart_read_polled(int minor);
-static ssize_t usart_write_polled_support(int minor, const char *buf, size_t len);
-static void usart_init(int minor);
-static void usart_write_polled(int minor, char c);
-static int usart_set_attributes(int minor, const struct termios *t);
-at91rm9200_usart_regs_t *usart_get_base(int minor);
-
-/* Pointers to functions for handling the UART polled. */
-const console_fns usart_polling_fns = {
- libchip_serial_default_probe, /* deviceProbe */
- usart_first_open, /* deviceFirstOpen */
- usart_last_close, /* deviceLastClose */
- usart_read_polled, /* deviceRead */
- usart_write_polled_support, /* deviceWrite */
- usart_init, /* deviceInitialize */
- usart_write_polled, /* deviceWritePolled */
- usart_set_attributes, /* deviceSetAttributes */
- FALSE /* TRUE if interrupt driven, FALSE if not. */
-};
-
-at91rm9200_usart_regs_t *usart_get_base(int minor)
-{
- console_tbl *console_entry;
- at91rm9200_usart_regs_t *port;
-
- console_entry = BSP_get_uart_from_minor(minor);
-
- if (console_entry == NULL)
- return 0;
-
- port = (at91rm9200_usart_regs_t *) console_entry->ulCtrlPort1;
- //printk( "minor=%d entry=%p port=%p\n", minor, console_entry, port );
-
- return port;
-}
-
-/*
- * Functions called via callbacks (i.e. the ones in uart_fns
- */
-
-/*
- * This is called the first time each device is opened. Since
- * the driver is polled, we don't have to do anything. If the driver
- * were interrupt driven, we'd enable interrupts here.
- */
-static int usart_first_open(int major, int minor, void *arg)
-{
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return -1;
-
- /* XXX port isn't being initialized or enabled */
-
- /* XXX I hope this is enough */
- usart->cr = (US_CR_RXEN | US_CR_TXEN);
- return 0;
-}
-
-/*
- * This is called the last time each device is closed. Since
- * the driver is polled, we don't have to do anything. If the driver
- * were interrupt driven, we'd disable interrupts here.
- */
-static int usart_last_close(int major, int minor, void *arg)
-{
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return -1;
-
- return 0;
-}
-
-/*
- * Read one character from UART.
- *
- * return -1 if there's no data, otherwise return
- * the character in lowest 8 bits of returned int.
- */
-static int usart_read_polled(int minor)
-{
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return -1;
-
- /* if nothing ready return -1 */
- if ( (usart->sr & US_IER_RXRDY) == 0 )
- return -1;
-
- return usart->rhr;
-}
-
-
-/*
- * Write character out
- */
-static void usart_write_polled(int minor, char c)
-{
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return;
-
- /* delay until TX empty */
- while ( (usart->sr & US_IER_TXEMPTY) == 0 )
- ;
-
- usart->thr = c;
-}
-
-/*
- * Write buffer to UART
- *
- * return 1 on success, -1 on error
- */
-static ssize_t usart_write_polled_support(int minor, const char *buf, size_t len)
-{
- at91rm9200_usart_regs_t *usart;
- int nwrite=0;
-
- /*
- * Verify the minor number
- */
- usart = usart_get_base(minor);
- if ( !usart )
- return -1;
-
- /*
- * poll each byte in the string out of the port.
- */
- while (nwrite < len) {
- usart_write_polled(minor, *buf++);
- nwrite++;
- }
-
- /*
- * return the number of bytes written.
- */
- return nwrite;
-
- return 1;
-}
-
-
-/* Set up the UART. */
-static void usart_init(int minor)
-{
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return;
-
-}
-
-
-/* This is for setting baud rate, bits, etc. */
-static int usart_set_attributes(int minor, const struct termios *t)
-{
- uint32_t brgr;
- uint32_t mode, baud, baud_requested;
- at91rm9200_usart_regs_t *usart;
-
- usart = usart_get_base(minor);
- if ( !usart )
- return -1;
-
- /* Get current mode register */
- mode = usart->mr & ~(US_MR_USMODE | US_MR_USCLKS | US_MR_CHRL
- | US_MR_PAR | US_MR_NBSTOP);
-
- /* Byte size */
- switch (t->c_cflag & CSIZE){
- case CS5:
- mode |= US_MR_CHRL_5;
- break;
- case CS6:
- mode |= US_MR_CHRL_6;
- break;
- case CS7:
- mode |= US_MR_CHRL_7;
- break;
- default:
- mode |= US_MR_CHRL_8;
- break;
- }
-
- /* Stop bits */
- if (t->c_cflag & CSTOPB){
- mode |= US_MR_NBSTOP_2; /* 2 stop bits */
- } else
- mode |= US_MR_NBSTOP_1; /* 1 stop bits */
-
- /* Parity */
- if (t->c_cflag & PARENB){
- /* Mark or Space parity */
- if (t->c_cflag & PARODD){
- mode |= US_MR_PAR_ODD;
- } else
- mode |= US_MR_PAR_EVEN;
- } else
- mode |= US_MR_PAR_NONE;
-
- baud_requested = t->c_ospeed;
-
- /* If not, set the dbgu console baud as USART baud default */
- if (!baud_requested)
- baud_requested = BSP_get_baud();
-
- baud = rtems_termios_baud_to_number(baud_requested);
-
- brgr = (at91rm9200_get_mck() / 16) / baud;
-
- if (brgr > 65535){ /* BRGR is 16-bit, so switch to slower clock */
- brgr /= 8;
- mode |= US_MR_USCLKS_MCK_DIV8;
- }
-
- usart->mr = mode;
- usart->brgr = brgr;
- return 0;
-}
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