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pinctrl: mcp23s08: drop comment about missing irq support 

The driver supports using mcp23xxx as interrupt controller, so
let's drop all comments stating otherwise.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sebastian Reichel 2017-05-15 11:24:37 +02:00 committed by Linus Walleij
parent ce9bd0a0ff
commit d8f4494e70
2 changed files with 2 additions and 20 deletions
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19
drivers/pinctrl/pinctrl-mcp23s08.c
View File

@ -1,14 +1,4 @@
/*
* MCP23S08 SPI/I2C GPIO gpio expander driver
*
* The inputs and outputs of the mcp23s08, mcp23s17, mcp23008 and mcp23017 are
* supported.
* For the I2C versions of the chips (mcp23008 and mcp23017) generation of
* interrupts is also supported.
* The hardware of the SPI versions of the chips (mcp23s08 and mcp23s17) is
* also capable of generating interrupts, but the linux driver does not
* support that yet.
*/
/* MCP23S08 SPI/I2C GPIO driver */
#include <linux/kernel.h>
#include <linux/device.h>
@ -27,7 +17,7 @@
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
/**
/*
* MCP types supported by driver
*/
#define MCP_TYPE_S08 0
@ -1131,11 +1121,6 @@ static int mcp23s08_probe(struct spi_device *spi)
}
data->ngpio = ngpio;
/* NOTE: these chips have a relatively sane IRQ framework, with
* per-signal masking and level/edge triggering. It's not yet
* handled here...
*/
return 0;
}

3
include/linux/spi/mcp23s08.h
View File

@ -1,6 +1,3 @@
/* FIXME driver should be able to handle IRQs... */
struct mcp23s08_platform_data {
/* For mcp23s08, up to 4 slaves (numbered 0..3) can share one SPI
* chipselect, each providing 1 gpio_chip instance with 8 gpios.