Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ab52b599 authored by Xinliang Liu's avatar Xinliang Liu Committed by Philipp Zabel
Browse files

reset: hisilicon: Add hi6220 media subsystem reset support 



Add hi6220 media subsystem reset controller.

Signed-off-by: default avatarChen Feng <puck.chen@hisilicon.com>
Signed-off-by: default avatarXia Qing <saberlily.xia@hisilicon.com>
Signed-off-by: default avatarXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent 8768a26c

drivers/reset/hisilicon/hi6220_reset.c

+47 −2
Original line number Diff line number Diff line
@@ -27,8 +27,17 @@ 
#define PERIPH_DEASSERT_OFFSET    0x304

#define PERIPH_MAX_INDEX          0x509



#define SC_MEDIA_RSTEN            0x052C

#define SC_MEDIA_RSTDIS           0x0530

#define MEDIA_MAX_INDEX           8



#define to_reset_data(x) container_of(x, struct hi6220_reset_data, rc_dev)



enum hi6220_reset_ctrl_type {

	PERIPHERAL,

	MEDIA,

};



struct hi6220_reset_data {

	struct reset_controller_dev rc_dev;

	struct regmap *regmap;
@@ -63,10 +72,34 @@ static const struct reset_control_ops hi6220_peripheral_reset_ops = { 
	.deassert = hi6220_peripheral_deassert,

};



static int hi6220_media_assert(struct reset_controller_dev *rc_dev,

			       unsigned long idx)

{

	struct hi6220_reset_data *data = to_reset_data(rc_dev);

	struct regmap *regmap = data->regmap;



	return regmap_write(regmap, SC_MEDIA_RSTEN, BIT(idx));

}



static int hi6220_media_deassert(struct reset_controller_dev *rc_dev,

				 unsigned long idx)

{

	struct hi6220_reset_data *data = to_reset_data(rc_dev);

	struct regmap *regmap = data->regmap;



	return regmap_write(regmap, SC_MEDIA_RSTDIS, BIT(idx));

}



static const struct reset_control_ops hi6220_media_reset_ops = {

	.assert = hi6220_media_assert,

	.deassert = hi6220_media_deassert,

};



static int hi6220_reset_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	struct device *dev = &pdev->dev;

	enum hi6220_reset_ctrl_type type;

	struct hi6220_reset_data *data;

	struct regmap *regmap;
@@ -74,6 +107,8 @@ static int hi6220_reset_probe(struct platform_device *pdev) 
	if (!data)

		return -ENOMEM;



	type = (enum hi6220_reset_ctrl_type)of_device_get_match_data(dev);



	regmap = syscon_node_to_regmap(np);

	if (IS_ERR(regmap)) {

		dev_err(dev, "failed to get reset controller regmap\n");
@@ -82,8 +117,13 @@ static int hi6220_reset_probe(struct platform_device *pdev) 


	data->regmap = regmap;

	data->rc_dev.of_node = np;

	if (type == MEDIA) {

		data->rc_dev.ops = &hi6220_media_reset_ops;

		data->rc_dev.nr_resets = MEDIA_MAX_INDEX;

	} else {

		data->rc_dev.ops = &hi6220_peripheral_reset_ops;

		data->rc_dev.nr_resets = PERIPH_MAX_INDEX;

	}



	return reset_controller_register(&data->rc_dev);

}
@@ -91,6 +131,11 @@ static int hi6220_reset_probe(struct platform_device *pdev) 
static const struct of_device_id hi6220_reset_match[] = {

	{

		.compatible = "hisilicon,hi6220-sysctrl",

		.data = (void *)PERIPHERAL,

	},

	{

		.compatible = "hisilicon,hi6220-mediactrl",

		.data = (void *)MEDIA,

	},

	{ /* sentinel */ },

};