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Add chunked write ability to the Dediprog SF100 driver

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Please note that the write speedup only applies to chips which have SPI
page write (i.e. chips using spi_chip_write_256).

This is a quick fix for write speed until I get around to implementing
full bulk SPI write support.

Corresponding to flashrom svn r1235.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Richard A. Smith  <richard@laptop.org>
Acked-by: Mathias Krause <mathias.krause@secunet.com>
This commit is contained in:
Carl-Daniel Hailfinger
2010-11-23 21:28:16 +00:00
parent 482e97443d
commit 306b81875d
3 changed files with 9 additions and 2 deletions
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8
dediprog.c
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@ -238,6 +238,12 @@ int dediprog_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len)
return 0;
}
int dediprog_spi_write_256(struct flashchip *flash, uint8_t *buf, int start, int len)
{
/* No idea about the real limit. Maybe 12, maybe more, maybe less. */
return spi_write_chunked(flash, buf, start, len, 12);
}
int dediprog_spi_send_command(unsigned int writecnt, unsigned int readcnt,
const unsigned char *writearr, unsigned char *readarr)
{
@ -245,7 +251,7 @@ int dediprog_spi_send_command(unsigned int writecnt, unsigned int readcnt,
msg_pspew("%s, writecnt=%i, readcnt=%i\n", __func__, writecnt, readcnt);
/* Paranoid, but I don't want to be blamed if anything explodes. */
if (writecnt > 5) {
if (writecnt > 16) {
msg_perr("Untested writecnt=%i, aborting.\n", writecnt);
return 1;
}