Commit 0fd7ada1 authored by Philipp Zabel's avatar Philipp Zabel Committed by Mauro Carvalho Chehab
Browse files

media: hantro: add PM runtime resume callback 



It seems that on i.MX8MQ the power domain controller does not propagate
resets to the VPU cores on resume. Add a callback to allow implementing
manual reset of the VPU cores after ungating the power domain.

Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 0b675962

drivers/staging/media/hantro/hantro.h

+2 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ struct hantro_codec_ops; 
 * @codec:			Supported codecs

 * @codec_ops:			Codec ops.

 * @init:			Initialize hardware.

 * @runtime_resume:		reenable hardware after power gating

 * @vepu_irq:			encoder interrupt handler

 * @vdpu_irq:			decoder interrupt handler

 * @clk_names:			array of clock names
@@ -71,6 +72,7 @@ struct hantro_variant { 
	unsigned int codec;

	const struct hantro_codec_ops *codec_ops;

	int (*init)(struct hantro_dev *vpu);

	int (*runtime_resume)(struct hantro_dev *vpu);

	irqreturn_t (*vepu_irq)(int irq, void *priv);

	irqreturn_t (*vdpu_irq)(int irq, void *priv);

	const char *clk_names[HANTRO_MAX_CLOCKS];

drivers/staging/media/hantro/hantro_drv.c

+13 −0
Original line number Diff line number Diff line
@@ -832,9 +832,22 @@ static int hantro_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int hantro_runtime_resume(struct device *dev)

{

	struct hantro_dev *vpu = dev_get_drvdata(dev);



	if (vpu->variant->runtime_resume)

		return vpu->variant->runtime_resume(vpu);



	return 0;

}

#endif



static const struct dev_pm_ops hantro_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,

				pm_runtime_force_resume)

	SET_RUNTIME_PM_OPS(NULL, hantro_runtime_resume, NULL)

};



static struct platform_driver hantro_driver = {