diff options
Diffstat (limited to 'sb600spi.c')
| -rw-r--r-- | sb600spi.c | 25 |
1 files changed, 18 insertions, 7 deletions
@@ -24,6 +24,17 @@ #include "flash.h" #include "spi.h" +/* Change this to #define if you want lowlevel debugging of commands + * sent to the SB600/SB700 SPI controller. + */ +#undef COMM_DEBUG + +#ifdef COMM_DEBUG +#define msg_comm_debug printf_debug +#else +#define msg_comm_debug(...) do {} while (0) +#endif + /* This struct is unused, but helps visualize the SB600 SPI BAR layout. *struct sb600_spi_controller { * unsigned int spi_cntrl0; / * 00h * / @@ -105,7 +116,7 @@ int sb600_spi_send_command(unsigned int writecnt, unsigned int readcnt, writecnt--; - printf_debug("%s, cmd=%x, writecnt=%x, readcnt=%x\n", + msg_comm_debug("%s, cmd=%x, writecnt=%x, readcnt=%x\n", __func__, cmd, writecnt, readcnt); if (readcnt > 8) { @@ -135,10 +146,10 @@ int sb600_spi_send_command(unsigned int writecnt, unsigned int readcnt, /* Send the write byte to FIFO. */ for (count = 0; count < writecnt; count++, writearr++) { - printf_debug(" [%x]", *writearr); + msg_comm_debug(" [%x]", *writearr); mmio_writeb(*writearr, sb600_spibar + 0xC); } - printf_debug("\n"); + msg_comm_debug("\n"); /* * We should send the data by sequence, which means we need to reset @@ -164,16 +175,16 @@ int sb600_spi_send_command(unsigned int writecnt, unsigned int readcnt, /* Skip the bytes we sent. */ for (count = 0; count < writecnt; count++) { cmd = mmio_readb(sb600_spibar + 0xC); - printf_debug("[ %2x]", cmd); + msg_comm_debug("[ %2x]", cmd); } - printf_debug("The FIFO pointer after skipping is %d.\n", + msg_comm_debug("The FIFO pointer after skipping is %d.\n", mmio_readb(sb600_spibar + 0xd) & 0x07); for (count = 0; count < readcnt; count++, readarr++) { *readarr = mmio_readb(sb600_spibar + 0xC); - printf_debug("[%02x]", *readarr); + msg_comm_debug("[%02x]", *readarr); } - printf_debug("\n"); + msg_comm_debug("\n"); return 0; } |
