From bbcd6d543de335bf81e96477f46a60a8bf51039c Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Fri, 25 Jul 2008 01:46:14 -0700 Subject: gpio: max732x driver This adds a driver supporting a family of I2C port expanders from Maxim, which includes the MAX7319 and MAX7320-7327 chips. [dbrownell@users.sourceforge.net: minor fixes] Signed-off-by: Jack Ren Signed-off-by: Eric Miao Acked-by: Jean Delvare Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/Kconfig | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/gpio/Kconfig') diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 5a355f829167..dbd42d6c93a7 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -67,6 +67,25 @@ config GPIO_SYSFS comment "I2C GPIO expanders:" +config GPIO_MAX732X + tristate "MAX7319, MAX7320-7327 I2C Port Expanders" + depends on I2C + help + Say yes here to support the MAX7319, MAX7320-7327 series of I2C + Port Expanders. Each IO port on these chips has a fixed role of + Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain + Input and Output (designed by 'P'). The combinations are listed + below: + + 8 bits: max7319 (8I), max7320 (8O), max7321 (8P), + max7322 (4I4O), max7323 (4P4O) + + 16 bits: max7324 (8I8O), max7325 (8P8O), + max7326 (4I12O), max7327 (4P12O) + + Board setup code must specify the model to use, and the start + number for these GPIOs. + config GPIO_PCA953X tristate "PCA953x, PCA955x, and MAX7310 I/O ports" depends on I2C -- cgit v1.2.3