#include <linux/module.h>
#include <linux/export.h>
#include <linux/gpio/driver.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <linux/interrupt.h>
if (mcp_read(mcp, MCP_INTF, &intf))
goto unlock;
+ if (intf == 0) {
+ /* There is no interrupt pending */
+ goto unlock;
+ }
+
if (mcp_read(mcp, MCP_INTCAP, &intcap))
goto unlock;
mcp->cached_gpio = gpio;
mutex_unlock(&mcp->lock);
- if (intf == 0) {
- /* There is no interrupt pending */
- return IRQ_HANDLED;
- }
-
dev_dbg(mcp->chip.parent,
"intcap 0x%04X intf 0x%04X gpio_orig 0x%04X gpio 0x%04X\n",
intcap, intf, gpio_orig, gpio);
mcp->chip.parent = dev;
mcp->chip.owner = THIS_MODULE;
+ mcp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+
/* verify MCP_IOCON.SEQOP = 0, so sequential reads work,
* and MCP_IOCON.HAEN = 1, so we work with all chips.
*/