Author: stefanct Date: Wed Oct 2 03:22:17 2013 New Revision: 1757 URL: http://flashrom.org/trac/flashrom/changeset/1757
Log: rayer_spi: Fix Xilinx DLC-5 cable.
Pin 6 on LPT controls a pulldown on MISO/TDO signal. Whether there exists an unbuffered clone is unknown. The author of the original patch confirmed in private correspondence that the patch was incomplete. There has been no sign of an unbuffered version on the interwebs, hence just change the existing driver to disable the pulldown.
Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at Acked-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at
Modified: trunk/rayer_spi.c
Modified: trunk/rayer_spi.c ============================================================================== --- trunk/rayer_spi.c Wed Oct 2 03:22:11 2013 (r1756) +++ trunk/rayer_spi.c Wed Oct 2 03:22:17 2013 (r1757) @@ -63,11 +63,16 @@ .miso_bit = 6, };
+static void dlc5_preinit(const void *); +static int dlc5_shutdown(void *); + static const struct rayer_pinout xilinx_dlc5 = { .cs_bit = 2, .sck_bit = 1, .mosi_bit = 0, .miso_bit = 4, + .preinit = dlc5_preinit, + .shutdown = dlc5_shutdown, };
static void byteblaster_preinit(const void *); @@ -256,6 +261,21 @@ OUTB(lpt_outbyte, lpt_iobase); return 0; } + +static void dlc5_preinit(const void *data) { + msg_pdbg("dlc5_preinit\n"); + /* Assert pin 6 to receive MISO. */ + lpt_outbyte |= (1<<4); + OUTB(lpt_outbyte, lpt_iobase); +} + +static int dlc5_shutdown(void *data) { + msg_pdbg("dlc5_shutdown\n"); + /* De-assert pin 6 to force MISO low. */ + lpt_outbyte &= ~(1<<4); + OUTB(lpt_outbyte, lpt_iobase); + return 0; +}
#else #error PCI port I/O access is not supported on this architecture yet.