diff options
Diffstat (limited to 'common/cmd_spi.c')
| -rw-r--r-- | common/cmd_spi.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/common/cmd_spi.c b/common/cmd_spi.c index bafa217..8c623c9 100644 --- a/common/cmd_spi.c +++ b/common/cmd_spi.c @@ -47,7 +47,9 @@ /* * Values from last command. */ -static unsigned int device; +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]; @@ -78,8 +80,18 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 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) { @@ -91,7 +103,7 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 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) @@ -103,24 +115,20 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) { - printf("Invalid bitlen %d, giving up.\n", bitlen); + printf("Invalid bitlen %d\n", bitlen); return 1; } - /* FIXME: Make these parameters run-time configurable */ - slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, device, 1000000, - CONFIG_DEFAULT_SPI_MODE); + slave = spi_setup_slave(bus, cs, 1000000, mode); if (!slave) { - printf("Invalid device %d, giving up.\n", device); + printf("Invalid device %d:%d\n", bus, cs); return 1; } - debug ("spi chipsel = %08X\n", device); - spi_claim_bus(slave); if(spi_xfer(slave, bitlen, dout, din, SPI_XFER_BEGIN | SPI_XFER_END) != 0) { - printf("Error with the SPI transaction.\n"); + printf("Error during SPI transaction\n"); rcode = 1; } else { for(j = 0; j < ((bitlen + 7) / 8); j++) { @@ -138,9 +146,11 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) U_BOOT_CMD( sspi, 5, 1, do_spi, - "SPI utility commands", - "<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" ); |