Subject: [PATCH] [acpi ec] Add setup option to choose interrupt/polling mode

- Create drivers/acpi/drivers/ec/setup.c
- Add ec_intr= setup option
- Add ec_poll_mode variable and EC_MODE_INTR and EC_MODE_POLL
  values for it.

Signed-off-by: Patrick Mochel <mochel@linux.intel.com>

---

 drivers/acpi/drivers/ec/driver.c |    3 +++
 drivers/acpi/drivers/ec/ec.h     |   10 ++++++++++
 drivers/acpi/drivers/ec/setup.c  |   22 ++++++++++++++++++++++
 3 files changed, 35 insertions(+), 0 deletions(-)
 create mode 100644 drivers/acpi/drivers/ec/setup.c

applies-to: 4dccc3371236d46be2873c6058f7e4ef2a35a283
e660c434ce03bb192c088927b588a7c384800e1b
diff --git a/drivers/acpi/drivers/ec/driver.c b/drivers/acpi/drivers/ec/driver.c
index 4e48e1e..ad53ace 100644
--- a/drivers/acpi/drivers/ec/driver.c
+++ b/drivers/acpi/drivers/ec/driver.c
@@ -15,6 +15,9 @@
 #include <acpi/driver.h>
 #include "ec.h"
 
+int ec_poll_mode = EC_MODE_INTR;
+
+
 static int ec_add(struct acpi_dev * ad)
 {
 	struct acpi_ec * ae;
diff --git a/drivers/acpi/drivers/ec/ec.h b/drivers/acpi/drivers/ec/ec.h
index a6f2bda..e46990a 100644
--- a/drivers/acpi/drivers/ec/ec.h
+++ b/drivers/acpi/drivers/ec/ec.h
@@ -14,6 +14,10 @@ ACPI_MODULE_NAME("acpi_ec");
 
 #define ACPI_EC_HID	"PNP0C09"
 
+enum {
+	EC_MODE_POLL = 0,
+	EC_MODE_INTR = 0,
+};
 
 struct acpi_ec {
 	struct acpi_dev		* e_ad;
@@ -27,6 +31,12 @@ struct acpi_ec {
 	struct acpi_generic_address	e_data;
 };
 
+
+/*
+ * driver.c
+ */
+extern int ec_poll_mode;
+
 /*
  * device.c
  */
diff --git a/drivers/acpi/drivers/ec/setup.c b/drivers/acpi/drivers/ec/setup.c
new file mode 100644
index 0000000..b951dbe
--- /dev/null
+++ b/drivers/acpi/drivers/ec/setup.c
@@ -0,0 +1,22 @@
+
+#include "ec.h"
+
+
+static int __init setup_ec_mode(char *str)
+{
+	int intr;
+
+	if (!get_option(&str, &intr))
+		return 0;
+
+	if (intr)
+		ec_poll_mode = EC_MODE_INTR;
+	else
+		ec_poll_mode = EC_MODE_POLL;
+
+	printk(KERN_INFO PREFIX "EC %s mode.\n", 
+	       intr ? "interrupt" : "polling");
+	return 0;
+}
+
+__setup("ec_intr=", setup_ec_mode);
---
0.99.9.GIT