* (C) Copyright 2002
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*
- * 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 <command.h>
+#include <dm.h>
+#include <errno.h>
#include <spi.h>
-#if (CONFIG_COMMANDS & CFG_CMD_SPI) || defined(CONFIG_CMD_SPI)
-
/*-----------------------------------------------------------------------
* Definitions
*/
# define MAX_SPI_BYTES 32 /* Maximum number of bytes we can handle */
#endif
-/*
- * External table of chip select functions (see the appropriate board
- * support for the actual definition of the table).
- */
-extern spi_chipsel_type spi_chipsel[];
-extern int spi_chipsel_cnt;
+#ifndef CONFIG_DEFAULT_SPI_BUS
+# define CONFIG_DEFAULT_SPI_BUS 0
+#endif
+#ifndef CONFIG_DEFAULT_SPI_MODE
+# define CONFIG_DEFAULT_SPI_MODE SPI_MODE_0
+#endif
/*
* Values from last command.
*/
-static int device;
-static int bitlen;
-static uchar dout[MAX_SPI_BYTES];
-static uchar din[MAX_SPI_BYTES];
+static unsigned int bus;
+static unsigned int cs;
+static unsigned int mode;
+static int bitlen;
+static uchar dout[MAX_SPI_BYTES];
+static uchar din[MAX_SPI_BYTES];
+
+static int do_spi_xfer(int bus, int cs)
+{
+ struct spi_slave *slave;
+ int ret = 0;
+
+#ifdef CONFIG_DM_SPI
+ char name[30], *str;
+ struct udevice *dev;
+
+ snprintf(name, sizeof(name), "generic_%d:%d", bus, cs);
+ str = strdup(name);
+ ret = spi_get_bus_and_cs(bus, cs, 1000000, mode, "spi_generic_drv",
+ str, &dev, &slave);
+ if (ret)
+ return ret;
+#else
+ slave = spi_setup_slave(bus, cs, 1000000, mode);
+ if (!slave) {
+ printf("Invalid device %d:%d\n", bus, cs);
+ return -EINVAL;
+ }
+#endif
+
+ ret = spi_claim_bus(slave);
+ if (ret)
+ goto done;
+ ret = spi_xfer(slave, bitlen, dout, din,
+ SPI_XFER_BEGIN | SPI_XFER_END);
+#ifndef CONFIG_DM_SPI
+ /* We don't get an error code in this case */
+ if (ret)
+ ret = -EIO;
+#endif
+ if (ret) {
+ printf("Error %d during SPI transaction\n", ret);
+ } else {
+ int j;
+
+ for (j = 0; j < ((bitlen + 7) / 8); j++)
+ printf("%02X", din[j]);
+ printf("\n");
+ }
+done:
+ spi_release_bus(slave);
+#ifndef CONFIG_DM_SPI
+ spi_free_slave(slave);
+#endif
+
+ return ret;
+}
/*
* SPI read/write
* The command prints out the hexadecimal string received via SPI.
*/
-int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *cp = 0;
uchar tmp;
int j;
- int rcode = 0;
/*
* We use the last specified parameters, unless new ones are
if ((flag & CMD_FLAG_REPEAT) == 0)
{
- if (argc >= 2)
- device = simple_strtoul(argv[1], NULL, 10);
+ if (argc >= 2) {
+ mode = CONFIG_DEFAULT_SPI_MODE;
+ bus = simple_strtoul(argv[1], &cp, 10);
+ if (*cp == ':') {
+ cs = simple_strtoul(cp+1, &cp, 10);
+ } else {
+ cs = bus;
+ bus = CONFIG_DEFAULT_SPI_BUS;
+ }
+ if (*cp == '.')
+ mode = simple_strtoul(cp+1, NULL, 10);
+ }
if (argc >= 3)
bitlen = simple_strtoul(argv[2], NULL, 10);
if (argc >= 4) {
if(tmp > 15)
tmp -= ('a' - 'A');
if(tmp > 15) {
- printf("Hex conversion error on %c, giving up.\n", *cp);
+ printf("Hex conversion error on %c\n", *cp);
return 1;
}
if((j % 2) == 0)
}
}
- if ((device < 0) || (device >= spi_chipsel_cnt)) {
- printf("Invalid device %d, giving up.\n", device);
- return 1;
- }
if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) {
- printf("Invalid bitlen %d, giving up.\n", bitlen);
+ printf("Invalid bitlen %d\n", bitlen);
return 1;
}
- debug ("spi_chipsel[%d] = %08X\n",
- device, (uint)spi_chipsel[device]);
-
- if(spi_xfer(spi_chipsel[device], bitlen, dout, din) != 0) {
- printf("Error with the SPI transaction.\n");
- rcode = 1;
- } else {
- cp = (char *)din;
- for(j = 0; j < ((bitlen + 7) / 8); j++) {
- printf("%02X", *cp++);
- }
- printf("\n");
- }
+ if (do_spi_xfer(bus, cs))
+ return 1;
- return rcode;
+ return 0;
}
/***************************************************/
U_BOOT_CMD(
sspi, 5, 1, do_spi,
- "sspi - SPI utility commands\n",
- "<device> <bit_len> <dout> - Send <bit_len> bits from <dout> out the SPI\n"
- "<device> - Identifies the chip select of the device\n"
+ "SPI utility command",
+ "[<bus>:]<cs>[.<mode>] <bit_len> <dout> - Send and receive bits\n"
+ "<bus> - Identifies the SPI bus\n"
+ "<cs> - Identifies the chip select\n"
+ "<mode> - Identifies the SPI mode to use\n"
"<bit_len> - Number of bits to send (base 10)\n"
- "<dout> - Hexadecimal string that gets sent\n"
+ "<dout> - Hexadecimal string that gets sent"
);
-
-#endif /* CFG_CMD_SPI */