From 22ed61f97815856bf74cec25ae6bca88bfbe5f44 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 22 Dec 2010 19:19:14 -0800
Subject: zpu: renamed the directory for the usrp2 fw to zpu to reflect the cpu
 type

---
 firmware/microblaze/lib/spi.c | 110 ------------------------------------------
 1 file changed, 110 deletions(-)
 delete mode 100644 firmware/microblaze/lib/spi.c

(limited to 'firmware/microblaze/lib/spi.c')

diff --git a/firmware/microblaze/lib/spi.c b/firmware/microblaze/lib/spi.c
deleted file mode 100644
index af0d8a68f..000000000
--- a/firmware/microblaze/lib/spi.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright 2007,2008 Free Software Foundation, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "spi.h"
-#include "memory_map.h"
-#include "pic.h"
-#include "nonstdio.h"
-
-//void (*volatile spi_callback)(void); //SPI callback when xfer complete.
-
-//static void spi_irq_handler(unsigned irq);
-
-void
-spi_init(void) 
-{
-  /*
-   * f_sclk = f_wb / ((div + 1) * 2)
-   */
-  spi_regs->div = 1;  // 0 = Div by 2 (25 MHz); 1 = Div-by-4 (12.5 MHz)
-}
-
-void
-spi_wait(void) 
-{
-  while (spi_regs->ctrl & SPI_CTRL_GO_BSY)
-    ;
-}
-
-uint32_t
-spi_transact(bool readback, int slave, uint32_t data, int length, uint32_t flags) 
-{
-  flags &= (SPI_CTRL_TXNEG | SPI_CTRL_RXNEG);
-  int ctrl = SPI_CTRL_ASS | (SPI_CTRL_CHAR_LEN_MASK & length) | flags;
-
-  spi_wait();
-
-  // Tell it which SPI slave device to access
-  spi_regs->ss = slave & 0xffff;
-
-  // Data we will send
-  spi_regs->txrx0 = data;
-
-  // Run it -- write once and rewrite with GO set
-  spi_regs->ctrl = ctrl;
-  spi_regs->ctrl = ctrl | SPI_CTRL_GO_BSY;
-
-  if(readback) {
-    spi_wait();
-    return spi_regs->txrx0;
-  }
-  else
-    return 0;
-}
-
-/*
-void spi_register_callback(void (*volatile callback)(void)) {
-  spi_callback = callback;
-}
-
-static void spi_irq_handler(unsigned irq) {
-//  printf("SPI IRQ handler\n");
-//  uint32_t wat = spi_regs->ctrl; //read a register just to clear the interrupt
-  //spi_regs->ctrl &= ~SPI_CTRL_IE;
-  if(spi_callback) spi_callback(); //we could just use the PIC to register the user's callback, but this provides the ability to do other things later
-}
-
-uint32_t spi_get_data(void) {
-  return spi_regs->txrx0;
-}
-
-bool 
-spi_async_transact(int slave, uint32_t data, int length, uint32_t flags, void (*volatile callback)(void)) {
-  flags &= (SPI_CTRL_TXNEG | SPI_CTRL_RXNEG);
-  int ctrl = SPI_CTRL_ASS | SPI_CTRL_IE | (SPI_CTRL_CHAR_LEN_MASK & length) | flags;
-
-  if(spi_regs->ctrl & SPI_CTRL_GO_BSY) {
-    printf("Async SPI busy!\n");
-    return false; //we don't wait on busy, we just return failure. we count on the host to not set up another transaction before the last one finishes.
-  }
-
-  // Tell it which SPI slave device to access
-  spi_regs->ss = slave & 0xffff;
-
-  // Data we will send
-  spi_regs->txrx0 = data;
-
-  spi_register_callback(callback);
-  pic_register_handler(IRQ_SPI, spi_irq_handler);
-
-  // Run it -- write once and rewrite with GO set
-  spi_regs->ctrl = ctrl;
-  spi_regs->ctrl = ctrl | SPI_CTRL_GO_BSY;
-
-  return true;
-}
-*/
-- 
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