diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-10 17:09:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-10 17:09:13 -0800 |
| commit | 8adbf8d46718a8f110de55ec82c40d04d0c362cc (patch) | |
| tree | dbaf7109edaaa26496e131e6644074fbcb75c75d /include/linux/gpio-i2cmux.h | |
| parent | 0be8c8bd1de21d75ef14eb6af35b664f70a35746 (diff) | |
| parent | 0cc43a1806f078f7fd414850d8f1f1761696e4af (diff) | |
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: Constify i2c_client where possible
i2c-algo-bit: Complain about masters which can't read SCL
i2c-algo-bit: Refactor adapter registration
i2c: Add generic I2C multiplexer using GPIO API
i2c-nforce2: Remove unnecessary cast of pci_get_drvdata
i2c-i801: Include <linux/slab.h>
Diffstat (limited to 'include/linux/gpio-i2cmux.h')
| -rw-r--r-- | include/linux/gpio-i2cmux.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/gpio-i2cmux.h b/include/linux/gpio-i2cmux.h new file mode 100644 index 00000000000..4a333bb0bd0 --- /dev/null +++ b/include/linux/gpio-i2cmux.h @@ -0,0 +1,38 @@ +/* + * gpio-i2cmux interface to platform code + * + * Peter Korsgaard <peter.korsgaard@barco.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_GPIO_I2CMUX_H +#define _LINUX_GPIO_I2CMUX_H + +/* MUX has no specific idle mode */ +#define GPIO_I2CMUX_NO_IDLE ((unsigned)-1) + +/** + * struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux + * @parent: Parent I2C bus adapter number + * @base_nr: Base I2C bus number to number adapters from or zero for dynamic + * @values: Array of bitmasks of GPIO settings (low/high) for each + * position + * @n_values: Number of multiplexer positions (busses to instantiate) + * @gpios: Array of GPIO numbers used to control MUX + * @n_gpios: Number of GPIOs used to control MUX + * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used + */ +struct gpio_i2cmux_platform_data { + int parent; + int base_nr; + const unsigned *values; + int n_values; + const unsigned *gpios; + int n_gpios; + unsigned idle; +}; + +#endif /* _LINUX_GPIO_I2CMUX_H */ |