diff options
Diffstat (limited to 'drivers/parport/daisy.c')
| -rw-r--r-- | drivers/parport/daisy.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/parport/daisy.c b/drivers/parport/daisy.c index 573c5ef20..dddba9713 100644 --- a/drivers/parport/daisy.c +++ b/drivers/parport/daisy.c @@ -406,8 +406,33 @@ void parport_daisy_deselect_all (struct parport *port) int parport_daisy_select (struct parport *port, int daisy, int mode) { - /* mode is currently ignored. FIXME? */ - return cpp_daisy (port, 0xe0 + daisy) & PARPORT_STATUS_ERROR; + switch (mode) + { + // For these modes we should switch to EPP mode: + case IEEE1284_MODE_EPP: + case IEEE1284_MODE_EPPSL: + case IEEE1284_MODE_EPPSWE: + return (cpp_daisy (port, 0x20 + daisy) & + PARPORT_STATUS_ERROR); + + // For these modes we should switch to ECP mode: + case IEEE1284_MODE_ECP: + case IEEE1284_MODE_ECPRLE: + case IEEE1284_MODE_ECPSWE: + return (cpp_daisy (port, 0xd0 + daisy) & + PARPORT_STATUS_ERROR); + + // Nothing was told for BECP in Daisy chain specification. + // May be it's wise to use ECP? + case IEEE1284_MODE_BECP: + // Others use compat mode + case IEEE1284_MODE_NIBBLE: + case IEEE1284_MODE_BYTE: + case IEEE1284_MODE_COMPAT: + default: + return (cpp_daisy (port, 0xe0 + daisy) & + PARPORT_STATUS_ERROR); + } } static int mux_present (struct parport *port) |