On Thu, Jul 08, 2010 at 05:41:33PM +0100, Alan Cox wrote:
> From: Zheng Ba <zheng.ba@xxxxxxxxx>
>
> An i2c bus driver for the Intel Medfield keypad interface.
>
> Signed-off-by: Zheng Ba <zheng.ba@xxxxxxxxx>
> Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
> ---
>
> drivers/input/keyboard/Kconfig | 10 +
> drivers/input/keyboard/Makefile | 1
> drivers/input/keyboard/mfld_keypad.c | 613 ++++++++++++++++++++++++++++++++++
> drivers/input/keyboard/mfld_keypad.h | 56 +++
> 4 files changed, 680 insertions(+), 0 deletions(-)
> create mode 100644 drivers/input/keyboard/mfld_keypad.c
> create mode 100644 drivers/input/keyboard/mfld_keypad.h
>
>
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 950f6d1..10cc686 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -309,6 +309,16 @@ config KEYBOARD_MCS
> To compile this driver as a module, choose M here: the
> module will be called mcs_touchkey.
>
> +config KEYBOARD_MFLD
> + tristate "Medfield I2C keypad support"
> + depends on I2C && GPIOLIB && X86_MRST
> + help
> + Say Y here if you want to get support for the keypad controller
> + on the Medfield (MFLD) platform of Intel MID.
> +
> + To compile this as a module, choose M here: the
> + module will be called mfld_keypad.
> +
> config KEYBOARD_IMX
> tristate "IMX keypad support"
> depends on ARCH_MXC
> diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
> index a1f5e9d..9672c3d 100644
> --- a/drivers/input/keyboard/Makefile
> +++ b/drivers/input/keyboard/Makefile
<snip>
> +/*
> + * We cannot use I2c in interrupt context, so we just schedule work.
> + */
> +static irqreturn_t mfld_keypad_irq(int irq, void *data)
> +{
> + struct mfld_keypad_chip *tc = data;
> + schedule_work(&tc->work);
Use threaded irq?
> + return IRQ_HANDLED;
> +}
--
Ville Syrjälä
syrjala@xxxxxx
http://www.sci.fi/~syrjala/
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