diff options
Diffstat (limited to 'include/linux/mfd/janz.h')
-rw-r--r-- | include/linux/mfd/janz.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/mfd/janz.h b/include/linux/mfd/janz.h new file mode 100644 index 000000000..90dea65fd --- /dev/null +++ b/include/linux/mfd/janz.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Common Definitions for Janz MODULbus devices + * + * Copyright (c) 2010 Ira W. Snyder <iws@ovro.caltech.edu> + */ + +#ifndef JANZ_H +#define JANZ_H + +struct janz_platform_data { + /* MODULbus Module Number */ + unsigned int modno; +}; + +/* PLX bridge chip onboard registers */ +struct janz_cmodio_onboard_regs { + u8 unused1; + + /* + * Read access: interrupt status + * Write access: interrupt disable + */ + u8 int_disable; + u8 unused2; + + /* + * Read access: MODULbus number (hex switch) + * Write access: interrupt enable + */ + u8 int_enable; + u8 unused3; + + /* write-only */ + u8 reset_assert; + u8 unused4; + + /* write-only */ + u8 reset_deassert; + u8 unused5; + + /* read-write access to serial EEPROM */ + u8 eep; + u8 unused6; + + /* write-only access to EEPROM chip select */ + u8 enid; +}; + +#endif /* JANZ_H */ |