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@ -47,7 +47,9 @@ |
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/*
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* Values from last command. |
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*/ |
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static unsigned int device; |
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static unsigned int bus; |
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static unsigned int cs; |
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static unsigned int mode; |
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static int bitlen; |
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static uchar dout[MAX_SPI_BYTES]; |
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static uchar din[MAX_SPI_BYTES]; |
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@ -78,8 +80,18 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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if ((flag & CMD_FLAG_REPEAT) == 0) |
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{ |
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if (argc >= 2) |
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device = simple_strtoul(argv[1], NULL, 10); |
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if (argc >= 2) { |
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mode = CONFIG_DEFAULT_SPI_MODE; |
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bus = simple_strtoul(argv[1], &cp, 10); |
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if (*cp == ':') { |
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cs = simple_strtoul(cp+1, &cp, 10); |
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} else { |
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cs = bus; |
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bus = CONFIG_DEFAULT_SPI_BUS; |
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} |
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if (*cp == '.'); |
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mode = simple_strtoul(cp+1, NULL, 10); |
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} |
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if (argc >= 3) |
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bitlen = simple_strtoul(argv[2], NULL, 10); |
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if (argc >= 4) { |
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@ -91,7 +103,7 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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if(tmp > 15) |
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tmp -= ('a' - 'A'); |
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if(tmp > 15) { |
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printf("Hex conversion error on %c, giving up.\n", *cp); |
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printf("Hex conversion error on %c\n", *cp); |
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return 1; |
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} |
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if((j % 2) == 0) |
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@ -103,24 +115,20 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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} |
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if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) { |
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printf("Invalid bitlen %d, giving up.\n", bitlen); |
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printf("Invalid bitlen %d\n", bitlen); |
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return 1; |
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} |
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/* FIXME: Make these parameters run-time configurable */ |
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slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, device, 1000000, |
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CONFIG_DEFAULT_SPI_MODE); |
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slave = spi_setup_slave(bus, cs, 1000000, mode); |
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if (!slave) { |
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printf("Invalid device %d, giving up.\n", device); |
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printf("Invalid device %d:%d\n", bus, cs); |
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return 1; |
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} |
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debug ("spi chipsel = %08X\n", device); |
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spi_claim_bus(slave); |
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if(spi_xfer(slave, bitlen, dout, din, |
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SPI_XFER_BEGIN | SPI_XFER_END) != 0) { |
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printf("Error with the SPI transaction.\n"); |
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printf("Error during SPI transaction\n"); |
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rcode = 1; |
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} else { |
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for(j = 0; j < ((bitlen + 7) / 8); j++) { |
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@ -138,9 +146,11 @@ int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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U_BOOT_CMD( |
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sspi, 5, 1, do_spi, |
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"SPI utility commands", |
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"<device> <bit_len> <dout> - Send <bit_len> bits from <dout> out the SPI\n" |
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"<device> - Identifies the chip select of the device\n" |
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"SPI utility command", |
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"[<bus>:]<cs>[.<mode>] <bit_len> <dout> - Send and receive bits\n" |
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"<bus> - Identifies the SPI bus\n" |
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"<cs> - Identifies the chip select\n" |
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"<mode> - Identifies the SPI mode to use\n" |
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"<bit_len> - Number of bits to send (base 10)\n" |
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"<dout> - Hexadecimal string that gets sent" |
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); |
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