video: ipu: initialize g_ipu_clk, g_ldb_clk statically

[karo-tx-uboot.git] / drivers / spi / atmel_spi.c

diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index d0de9319684650989e987c3f0bb037035c0d6715..ed6278b86fdef4eac9851a7e1dc3802658c27fc6 100644 (file)
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -1,23 +1,7 @@
 /*
  * Copyright (C) 2007 Atmel Corporation
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 #include <common.h>
 #include <spi.h>
@@ -26,10 +10,19 @@
 #include <asm/io.h>
 
 #include <asm/arch/clk.h>
-#include <asm/arch/memory-map.h>
+#include <asm/arch/hardware.h>
 
 #include "atmel_spi.h"
 
+static int spi_has_wdrbt(struct atmel_spi_slave *slave)
+{
+       unsigned int ver;
+
+       ver = spi_readl(slave, VERSION);
+
+       return (ATMEL_SPI_VERSION_REV(ver) >= 0x210);
+}
+
 void spi_init()
 {
 
@@ -48,21 +41,21 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 
        switch (bus) {
        case 0:
-               regs = (void *)SPI0_BASE;
+               regs = (void *)ATMEL_BASE_SPI0;
                break;
-#ifdef SPI1_BASE
+#ifdef ATMEL_BASE_SPI1
        case 1:
-               regs = (void *)SPI1_BASE;
+               regs = (void *)ATMEL_BASE_SPI1;
                break;
 #endif
-#ifdef SPI2_BASE
+#ifdef ATMEL_BASE_SPI2
        case 2:
-               regs = (void *)SPI2_BASE;
+               regs = (void *)ATMEL_BASE_SPI2;
                break;
 #endif
-#ifdef SPI3_BASE
+#ifdef ATMEL_BASE_SPI3
        case 3:
-               regs = (void *)SPI3_BASE;
+               regs = (void *)ATMEL_BASE_SPI3;
                break;
 #endif
        default:
@@ -84,15 +77,16 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
        if (mode & SPI_CPOL)
                csrx |= ATMEL_SPI_CSRx_CPOL;
 
-       as = malloc(sizeof(struct atmel_spi_slave));
+       as = spi_alloc_slave(struct atmel_spi_slave, bus, cs);
        if (!as)
                return NULL;
 
-       as->slave.bus = bus;
-       as->slave.cs = cs;
        as->regs = regs;
        as->mr = ATMEL_SPI_MR_MSTR | ATMEL_SPI_MR_MODFDIS
                        | ATMEL_SPI_MR_PCS(~(1 << cs) & 0xf);
+       if (spi_has_wdrbt(as))
+               as->mr |= ATMEL_SPI_MR_WDRBT;
+
        spi_writel(as, CSR(cs), csrx);
 
        return &as->slave;
@@ -136,13 +130,11 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
        unsigned int    len_tx;
        unsigned int    len_rx;
        unsigned int    len;
-       int             ret;
        u32             status;
        const u8        *txp = dout;
        u8              *rxp = din;
        u8              value;
 
-       ret = 0;
        if (bitlen == 0)
                /* Finish any previously submitted transfers */
                goto out;