From: Abraham Arce <x0066660@xxxxxx> Enable Runtime PM functionality in OMAP4 driver based on the following assumptions - Runtime PM selected by ARCH_OMAP2PLUS_TYPICAL && ARCH_OMAP2PLUS, which is the default OMAP2+ defconfig including OMAP4 - Runtime PM APIs handles Clock Framework APIs - Do not do the keypadconfig if the irq request fails A minimal pm runtime get/put approach is implemented in probe/remove calls respectively based on: - Keyboard controller in wakeup domain so it is always on and power impact may be minimal - Cutting of clocks will prevent interrupts Signed-off-by: Abraham Arce <x0066660@xxxxxx> Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> --- Updating the changelogs as per Kevin's suggestion drivers/input/keyboard/omap4-keypad.c | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index 45bd097..36239e2 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> @@ -239,7 +240,8 @@ 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); - omap4_keypad_config(keypad_data); + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); error = request_irq(keypad_data->irq, omap4_keypad_interrupt, IRQF_TRIGGER_RISING, @@ -255,8 +257,9 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) goto err_free_irq; } - + omap4_keypad_config(keypad_data); platform_set_drvdata(pdev, keypad_data); + return 0; err_free_irq: @@ -278,6 +281,10 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
