diff options
Diffstat (limited to 'common/cmd_spi.c')
| -rw-r--r-- | common/cmd_spi.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/common/cmd_spi.c b/common/cmd_spi.c deleted file mode 100644 index 64c3ffcf42..0000000000 --- a/common/cmd_spi.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * (C) Copyright 2002 - * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * SPI Read/Write Utilities - */ - -#include <common.h> -#include <command.h> -#include <dm.h> -#include <errno.h> -#include <spi.h> - -/*----------------------------------------------------------------------- - * Definitions - */ - -#ifndef MAX_SPI_BYTES -# define MAX_SPI_BYTES 32 /* Maximum number of bytes we can handle */ -#endif - -#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 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 - * - * Syntax: - * spi {dev} {num_bits} {dout} - * {dev} is the device number for controlling chip select (see TBD) - * {num_bits} is the number of bits to send & receive (base 10) - * {dout} is a hexadecimal string of data to send - * The command prints out the hexadecimal string received via SPI. - */ - -int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - char *cp = 0; - uchar tmp; - int j; - - /* - * We use the last specified parameters, unless new ones are - * entered. - */ - - if ((flag & CMD_FLAG_REPEAT) == 0) - { - 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) { - cp = argv[3]; - for(j = 0; *cp; j++, cp++) { - tmp = *cp - '0'; - if(tmp > 9) - tmp -= ('A' - '0') - 10; - if(tmp > 15) - tmp -= ('a' - 'A'); - if(tmp > 15) { - printf("Hex conversion error on %c\n", *cp); - return 1; - } - if((j % 2) == 0) - dout[j / 2] = (tmp << 4); - else - dout[j / 2] |= tmp; - } - } - } - - if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) { - printf("Invalid bitlen %d\n", bitlen); - return 1; - } - - if (do_spi_xfer(bus, cs)) - return 1; - - return 0; -} - -/***************************************************/ - -U_BOOT_CMD( - sspi, 5, 1, do_spi, - "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" -); |