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authorJosh Blum <josh@joshknows.com>2010-12-22 19:19:14 -0800
committerJosh Blum <josh@joshknows.com>2010-12-22 19:19:14 -0800
commit22ed61f97815856bf74cec25ae6bca88bfbe5f44 (patch)
tree7d87d49b46f9507ff10486097e6d79e4bee4cb81 /firmware/microblaze/usrp2p/spif.c
parent71fc99d006f2347a356c5339905593f64ff902ec (diff)
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zpu: renamed the directory for the usrp2 fw to zpu to reflect the cpu type
Diffstat (limited to 'firmware/microblaze/usrp2p/spif.c')
-rw-r--r--firmware/microblaze/usrp2p/spif.c68
1 files changed, 0 insertions, 68 deletions
diff --git a/firmware/microblaze/usrp2p/spif.c b/firmware/microblaze/usrp2p/spif.c
deleted file mode 100644
index 1c1a348f4..000000000
--- a/firmware/microblaze/usrp2p/spif.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
- * Copyright 2009 Ettus Research LLC
- *
- * 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/>.
- */
-
-/*
- * Code for the Flash SPI bus
- */
-
-#include "spi.h"
-#include "memory_map.h"
-
-void
-spif_init(void)
-{
- /*
- * f_sclk = f_wb / ((div + 1) * 2)
- */
- spif_regs->div = 1; // 0 = Div by 2 (31.25 MHz); 1 = Div-by-4 (15.625 MHz)
-
- // run dummy transaction to work around invalid initial clock state
- spif_transact(SPI_TXONLY, 0, 0, 8, SPIF_PUSH_FALL | SPIF_LATCH_RISE);
-}
-
-inline void
-spif_wait(void)
-{
- while (spif_regs->ctrl & SPI_CTRL_GO_BSY)
- ;
-}
-
-uint32_t
-spif_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;
-
- spif_wait();
-
- // Data we will send
- spif_regs->txrx0 = data;
-
- // Run it -- write once and rewrite with GO set
- spif_regs->ctrl = ctrl;
- // Tell it which SPI slave device to access
- spif_regs->ss = slave & 0xff;
- spif_regs->ctrl = ctrl | SPI_CTRL_GO_BSY;
-
- if(readback_) {
- spif_wait();
- return spif_regs->txrx0;
- }
- else
- return 0;
-}