From: Abraham Arce <x0066...@ti.com>
Enable Runtime PM functionality in OMAP4 driver based on the following
assumptions
A minimal pm runtime get/put approach is implemented in probe/remove calls
respectively.
- Keyboard controller in wakeup domain so it is always on and
power impact may be minimal
- In OMAP4 the device control is at module/device level and ick/fclk level
control is
difficult so cutting of clocks will prevent interrupts.
Signed-off-by: Abraham Arce <x0066...@ti.com>
Cc: Kevin Hilman <khil...@deeprootsystems.com>
Signed-off-by: Shubhrajyoti D <shubhrajy...@ti.com>
---
drivers/input/keyboard/omap4-keypad.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/input/keyboard/omap4-keypad.c
b/drivers/input/keyboard/omap4-keypad.c
index 45bd097..fcfbb9b 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -29,6 +29,7 @@
#include <linux/io.h>
#include <linux/input.h>
#include <linux/slab.h>
+#include <linux/pm_runtime.h>
#include <plat/omap4-keypad.h>
@@ -239,6 +240,9 @@ static int __devinit omap4_keypad_probe(struct
platform_device *pdev)
matrix_keypad_build_keymap(pdata->keymap_data, row_shift,
input_dev->keycode, input_dev->keybit);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_get_sync(&pdev->dev);
+
omap4_keypad_config(keypad_data);
error = request_irq(keypad_data->irq, omap4_keypad_interrupt,
@@ -278,6 +282,10 @@ static int __devexit omap4_keypad_remove(struct
platform_device *pdev)
struct resource *res;
free_irq(keypad_data->irq, keypad_data);
+
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
input_unregister_device(keypad_data->input);
iounmap(keypad_data->base);
--
1.7.0.4
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