diff options
Diffstat (limited to 'serprog.c')
| -rw-r--r-- | serprog.c | 47 |
1 files changed, 47 insertions, 0 deletions
@@ -69,6 +69,7 @@ static int serprog_shutdown(void *data); #define S_CMD_Q_RDNMAXLEN 0x11 /* Query read-n maximum length */ #define S_CMD_S_BUSTYPE 0x12 /* Set used bustype(s). */ #define S_CMD_O_SPIOP 0x13 /* Perform SPI operation. */ +#define S_CMD_S_SPI_FREQ 0x14 /* Set SPI clock frequency */ static uint16_t sp_device_serbuf_size = 16; static uint16_t sp_device_opbuf_size = 300; @@ -482,6 +483,7 @@ int serprog_init(void) /* Check for the minimum operational set of commands. */ if (serprog_buses_supported & BUS_SPI) { uint8_t bt = BUS_SPI; + char *spispeed; if (sp_check_commandavail(S_CMD_O_SPIOP) == 0) { msg_perr("Error: SPI operation not supported while the " "bustype is SPI\n"); @@ -513,6 +515,51 @@ int serprog_init(void) spi_programmer_serprog.max_data_read = v; msg_pdbg(MSGHEADER "Maximum read-n length is %d\n", v); } + spispeed = extract_programmer_param("spispeed"); + if (spispeed && strlen(spispeed)) { + uint32_t f_spi_req, f_spi; + uint8_t buf[4]; + char *f_spi_suffix; + + errno = 0; + f_spi_req = strtol(spispeed, &f_spi_suffix, 0); + if (errno != 0 || spispeed == f_spi_suffix) { + msg_perr("Error: Could not convert 'spispeed'.\n"); + return 1; + } + if (strlen(f_spi_suffix) == 1) { + if (!strcasecmp(f_spi_suffix, "M")) + f_spi_req *= 1000000; + else if (!strcasecmp(f_spi_suffix, "k")) + f_spi_req *= 1000; + else { + msg_perr("Error: Garbage following 'spispeed' value.\n"); + return 1; + } + } else if (strlen(f_spi_suffix) > 1) { + msg_perr("Error: Garbage following 'spispeed' value.\n"); + return 1; + } + + buf[0] = (f_spi_req >> (0 * 8)) & 0xFF; + buf[1] = (f_spi_req >> (1 * 8)) & 0xFF; + buf[2] = (f_spi_req >> (2 * 8)) & 0xFF; + buf[3] = (f_spi_req >> (3 * 8)) & 0xFF; + + if (sp_check_commandavail(S_CMD_S_SPI_FREQ) == 0) + msg_perr(MSGHEADER "Warning: Setting the SPI clock rate is not supported!\n"); + else if (sp_docommand(S_CMD_S_SPI_FREQ, 4, buf, 4, buf) + == 0) { + f_spi = buf[0]; + f_spi |= buf[1] << (1 * 8); + f_spi |= buf[2] << (2 * 8); + f_spi |= buf[3] << (3 * 8); + msg_pdbg(MSGHEADER "Requested to set SPI clock frequency to %u Hz. " + "It was actually set to %u Hz\n", f_spi_req, f_spi); + } else + msg_pdbg(MSGHEADER "Setting SPI clock rate to %u Hz failed!\n", f_spi_req); + } + free(spispeed); bt = serprog_buses_supported; if (sp_docommand(S_CMD_S_BUSTYPE, 1, &bt, 0, NULL)) return 1; |
