drivers/pmdomain/imx/imx93-blk-ctrl.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2022 NXP, Peng Fan <peng.fan@nxp.com>
  */

 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/sizes.h>

 #include <dt-bindings/power/fsl,imx93-power.h>

 #define BLK_SFT_RSTN	0x0
 #define BLK_CLK_EN	0x4
 #define BLK_MAX_CLKS	4

 #define DOMAIN_MAX_CLKS 4

 #define LCDIF_QOS_REG		0xC
 #define LCDIF_DEFAULT_QOS_OFF	12
 #define LCDIF_CFG_QOS_OFF	8

 #define PXP_QOS_REG		0x10
 #define PXP_R_DEFAULT_QOS_OFF	28
 #define PXP_R_CFG_QOS_OFF	24
 #define PXP_W_DEFAULT_QOS_OFF	20
 #define PXP_W_CFG_QOS_OFF	16

 #define ISI_CACHE_REG		0x14

 #define ISI_QOS_REG		0x1C
 #define ISI_V_DEFAULT_QOS_OFF	28
 #define ISI_V_CFG_QOS_OFF	24
 #define ISI_U_DEFAULT_QOS_OFF	20
 #define ISI_U_CFG_QOS_OFF	16
 #define ISI_Y_R_DEFAULT_QOS_OFF	12
 #define ISI_Y_R_CFG_QOS_OFF	8
 #define ISI_Y_W_DEFAULT_QOS_OFF	4
 #define ISI_Y_W_CFG_QOS_OFF	0

 #define PRIO_MASK		0xF

 #define PRIO(X)			(X)

 struct imx93_blk_ctrl_domain;

 struct imx93_blk_ctrl {
 	struct device *dev;
 	struct regmap *regmap;
 	int num_clks;
 	struct clk_bulk_data clks[BLK_MAX_CLKS];
 	struct imx93_blk_ctrl_domain *domains;
 	struct genpd_onecell_data onecell_data;
 };

 #define DOMAIN_MAX_QOS 4

 struct imx93_blk_ctrl_qos {
 	u32 reg;
 	u32 cfg_off;
 	u32 default_prio;
 	u32 cfg_prio;
 };

 struct imx93_blk_ctrl_domain_data {
 	const char *name;
 	const char * const *clk_names;
 	int num_clks;
 	u32 rst_mask;
 	u32 clk_mask;
 	int num_qos;
 	struct imx93_blk_ctrl_qos qos[DOMAIN_MAX_QOS];
 };

 struct imx93_blk_ctrl_domain {
 	struct generic_pm_domain genpd;
 	const struct imx93_blk_ctrl_domain_data *data;
 	struct clk_bulk_data clks[DOMAIN_MAX_CLKS];
 	struct imx93_blk_ctrl *bc;
 };

 struct imx93_blk_ctrl_data {
 	const struct imx93_blk_ctrl_domain_data *domains;
 	int num_domains;
 	const char * const *clk_names;
 	int num_clks;
 	const struct regmap_access_table *reg_access_table;
 };

 static inline struct imx93_blk_ctrl_domain *
 to_imx93_blk_ctrl_domain(struct generic_pm_domain *genpd)
 {
 	return container_of(genpd, struct imx93_blk_ctrl_domain, genpd);
 }

 static int imx93_blk_ctrl_set_qos(struct imx93_blk_ctrl_domain *domain)
 {
 	const struct imx93_blk_ctrl_domain_data *data = domain->data;
 	struct imx93_blk_ctrl *bc = domain->bc;
 	const struct imx93_blk_ctrl_qos *qos;
 	u32 val, mask;
 	int i;

 	for (i = 0; i < data->num_qos; i++) {
 		qos = &data->qos[i];

 		mask = PRIO_MASK << qos->cfg_off;
 		mask |= PRIO_MASK << (qos->cfg_off + 4);
 		val = qos->cfg_prio << qos->cfg_off;
 		val |= qos->default_prio << (qos->cfg_off + 4);

 		regmap_write_bits(bc->regmap, qos->reg, mask, val);

 		dev_dbg(bc->dev, "data->qos[i].reg 0x%x 0x%x\n", qos->reg, val);
 	}

 	return 0;
 }

 static int imx93_blk_ctrl_power_on(struct generic_pm_domain *genpd)
 {
 	struct imx93_blk_ctrl_domain *domain = to_imx93_blk_ctrl_domain(genpd);
 	const struct imx93_blk_ctrl_domain_data *data = domain->data;
 	struct imx93_blk_ctrl *bc = domain->bc;
 	int ret;

 	ret = clk_bulk_prepare_enable(bc->num_clks, bc->clks);
 	if (ret) {
 		dev_err(bc->dev, "failed to enable bus clocks\n");
 		return ret;
 	}

 	ret = clk_bulk_prepare_enable(data->num_clks, domain->clks);
 	if (ret) {
 		clk_bulk_disable_unprepare(bc->num_clks, bc->clks);
 		dev_err(bc->dev, "failed to enable clocks\n");
 		return ret;
 	}

 	ret = pm_runtime_get_sync(bc->dev);
 	if (ret < 0) {
 		pm_runtime_put_noidle(bc->dev);
 		dev_err(bc->dev, "failed to power up domain\n");
 		goto disable_clk;
 	}

 	/* ungate clk */
 	regmap_clear_bits(bc->regmap, BLK_CLK_EN, data->clk_mask);

 	/* release reset */
 	regmap_set_bits(bc->regmap, BLK_SFT_RSTN, data->rst_mask);

 	dev_dbg(bc->dev, "pd_on: name: %s\n", genpd->name);

 	return imx93_blk_ctrl_set_qos(domain);

 disable_clk:
 	clk_bulk_disable_unprepare(data->num_clks, domain->clks);

 	clk_bulk_disable_unprepare(bc->num_clks, bc->clks);

 	return ret;
 }

 static int imx93_blk_ctrl_power_off(struct generic_pm_domain *genpd)
 {
 	struct imx93_blk_ctrl_domain *domain = to_imx93_blk_ctrl_domain(genpd);
 	const struct imx93_blk_ctrl_domain_data *data = domain->data;
 	struct imx93_blk_ctrl *bc = domain->bc;

 	dev_dbg(bc->dev, "pd_off: name: %s\n", genpd->name);

 	regmap_clear_bits(bc->regmap, BLK_SFT_RSTN, data->rst_mask);
 	regmap_set_bits(bc->regmap, BLK_CLK_EN, data->clk_mask);

 	pm_runtime_put(bc->dev);

 	clk_bulk_disable_unprepare(data->num_clks, domain->clks);

 	clk_bulk_disable_unprepare(bc->num_clks, bc->clks);

 	return 0;
 }

 static struct lock_class_key blk_ctrl_genpd_lock_class;

 static int imx93_blk_ctrl_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	const struct imx93_blk_ctrl_data *bc_data = of_device_get_match_data(dev);
 	struct imx93_blk_ctrl *bc;
 	void __iomem *base;
 	int i, ret;

 	struct regmap_config regmap_config = {
 		.reg_bits	= 32,
 		.val_bits	= 32,
 		.reg_stride	= 4,
 		.rd_table	= bc_data->reg_access_table,
 		.wr_table	= bc_data->reg_access_table,
 		.max_register   = SZ_4K,
 	};

 	bc = devm_kzalloc(dev, sizeof(*bc), GFP_KERNEL);
 	if (!bc)
 		return -ENOMEM;

 	bc->dev = dev;

 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);

 	bc->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
 	if (IS_ERR(bc->regmap))
 		return dev_err_probe(dev, PTR_ERR(bc->regmap),
 				     "failed to init regmap\n");

 	bc->domains = devm_kcalloc(dev, bc_data->num_domains,
 				   sizeof(struct imx93_blk_ctrl_domain),
 				   GFP_KERNEL);
 	if (!bc->domains)
 		return -ENOMEM;

 	bc->onecell_data.num_domains = bc_data->num_domains;
 	bc->onecell_data.domains =
 		devm_kcalloc(dev, bc_data->num_domains,
 			     sizeof(struct generic_pm_domain *), GFP_KERNEL);
 	if (!bc->onecell_data.domains)
 		return -ENOMEM;

 	for (i = 0; i < bc_data->num_clks; i++)
 		bc->clks[i].id = bc_data->clk_names[i];
 	bc->num_clks = bc_data->num_clks;

 	ret = devm_clk_bulk_get(dev, bc->num_clks, bc->clks);
 	if (ret) {
 		dev_err_probe(dev, ret, "failed to get bus clock\n");
 		return ret;
 	}

 	for (i = 0; i < bc_data->num_domains; i++) {
 		const struct imx93_blk_ctrl_domain_data *data = &bc_data->domains[i];
 		struct imx93_blk_ctrl_domain *domain = &bc->domains[i];
 		int j;

 		domain->data = data;

 		for (j = 0; j < data->num_clks; j++)
 			domain->clks[j].id = data->clk_names[j];

 		ret = devm_clk_bulk_get(dev, data->num_clks, domain->clks);
 		if (ret) {
 			dev_err_probe(dev, ret, "failed to get clock\n");
 			goto cleanup_pds;
 		}

 		domain->genpd.name = data->name;
 		domain->genpd.power_on = imx93_blk_ctrl_power_on;
 		domain->genpd.power_off = imx93_blk_ctrl_power_off;
 		domain->bc = bc;

 		ret = pm_genpd_init(&domain->genpd, NULL, true);
 		if (ret) {
 			dev_err_probe(dev, ret, "failed to init power domain\n");
 			goto cleanup_pds;
 		}

 		/*
 		 * We use runtime PM to trigger power on/off of the upstream GPC
 		 * domain, as a strict hierarchical parent/child power domain
 		 * setup doesn't allow us to meet the sequencing requirements.
 		 * This means we have nested locking of genpd locks, without the
 		 * nesting being visible at the genpd level, so we need a
 		 * separate lock class to make lockdep aware of the fact that
 		 * this are separate domain locks that can be nested without a
 		 * self-deadlock.
 		 */
 		lockdep_set_class(&domain->genpd.mlock,
 				  &blk_ctrl_genpd_lock_class);

 		bc->onecell_data.domains[i] = &domain->genpd;
 	}

 	pm_runtime_enable(dev);

 	ret = of_genpd_add_provider_onecell(dev->of_node, &bc->onecell_data);
 	if (ret) {
 		dev_err_probe(dev, ret, "failed to add power domain provider\n");
 		goto cleanup_pds;
 	}

 	dev_set_drvdata(dev, bc);

 	return 0;

 cleanup_pds:
 	for (i--; i >= 0; i--)
 		pm_genpd_remove(&bc->domains[i].genpd);

 	return ret;
 }

 static void imx93_blk_ctrl_remove(struct platform_device *pdev)
 {
 	struct imx93_blk_ctrl *bc = dev_get_drvdata(&pdev->dev);
 	int i;

 	of_genpd_del_provider(pdev->dev.of_node);

 	for (i = 0; bc->onecell_data.num_domains; i++) {
 		struct imx93_blk_ctrl_domain *domain = &bc->domains[i];

 		pm_genpd_remove(&domain->genpd);
 	}
 }

 static const struct imx93_blk_ctrl_domain_data imx93_media_blk_ctl_domain_data[] = {
 	[IMX93_MEDIABLK_PD_MIPI_DSI] = {
 		.name = "mediablk-mipi-dsi",
 		.clk_names = (const char *[]){ "dsi" },
 		.num_clks = 1,
 		.rst_mask = BIT(11) | BIT(12),
 		.clk_mask = BIT(11) | BIT(12),
 	},
 	[IMX93_MEDIABLK_PD_MIPI_CSI] = {
 		.name = "mediablk-mipi-csi",
 		.clk_names = (const char *[]){ "cam", "csi" },
 		.num_clks = 2,
 		.rst_mask = BIT(9) | BIT(10),
 		.clk_mask = BIT(9) | BIT(10),
 	},
 	[IMX93_MEDIABLK_PD_PXP] = {
 		.name = "mediablk-pxp",
 		.clk_names = (const char *[]){ "pxp" },
 		.num_clks = 1,
 		.rst_mask = BIT(7) | BIT(8),
 		.clk_mask = BIT(7) | BIT(8),
 		.num_qos = 2,
 		.qos = {
 			{
 				.reg = PXP_QOS_REG,
 				.cfg_off = PXP_R_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(6),
 			}, {
 				.reg = PXP_QOS_REG,
 				.cfg_off = PXP_W_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(6),
 			}
 		}
 	},
 	[IMX93_MEDIABLK_PD_LCDIF] = {
 		.name = "mediablk-lcdif",
 		.clk_names = (const char *[]){ "disp", "lcdif" },
 		.num_clks = 2,
 		.rst_mask = BIT(4) | BIT(5) | BIT(6),
 		.clk_mask = BIT(4) | BIT(5) | BIT(6),
 		.num_qos = 1,
 		.qos = {
 			{
 			.reg = LCDIF_QOS_REG,
 			.cfg_off = LCDIF_CFG_QOS_OFF,
 			.default_prio = PRIO(3),
 			.cfg_prio = PRIO(7),
 			}
 		}
 	},
 	[IMX93_MEDIABLK_PD_ISI] = {
 		.name = "mediablk-isi",
 		.clk_names = (const char *[]){ "isi" },
 		.num_clks = 1,
 		.rst_mask = BIT(2) | BIT(3),
 		.clk_mask = BIT(2) | BIT(3),
 		.num_qos = 4,
 		.qos = {
 			{
 				.reg = ISI_QOS_REG,
 				.cfg_off = ISI_Y_W_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(7),
 			}, {
 				.reg = ISI_QOS_REG,
 				.cfg_off = ISI_Y_R_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(7),
 			}, {
 				.reg = ISI_QOS_REG,
 				.cfg_off = ISI_U_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(7),
 			}, {
 				.reg = ISI_QOS_REG,
 				.cfg_off = ISI_V_CFG_QOS_OFF,
 				.default_prio = PRIO(3),
 				.cfg_prio = PRIO(7),
 			}
 		}
 	},
 };

 static const struct regmap_range imx93_media_blk_ctl_yes_ranges[] = {
 	regmap_reg_range(BLK_SFT_RSTN, BLK_CLK_EN),
 	regmap_reg_range(LCDIF_QOS_REG, ISI_CACHE_REG),
 	regmap_reg_range(ISI_QOS_REG, ISI_QOS_REG),
 };

 static const struct regmap_access_table imx93_media_blk_ctl_access_table = {
 	.yes_ranges = imx93_media_blk_ctl_yes_ranges,
 	.n_yes_ranges = ARRAY_SIZE(imx93_media_blk_ctl_yes_ranges),
 };

 static const struct imx93_blk_ctrl_data imx93_media_blk_ctl_dev_data = {
 	.domains = imx93_media_blk_ctl_domain_data,
 	.num_domains = ARRAY_SIZE(imx93_media_blk_ctl_domain_data),
 	.clk_names = (const char *[]){ "axi", "apb", "nic", },
 	.num_clks = 3,
 	.reg_access_table = &imx93_media_blk_ctl_access_table,
 };

 static const struct of_device_id imx93_blk_ctrl_of_match[] = {
 	{
 		.compatible = "fsl,imx93-media-blk-ctrl",
 		.data = &imx93_media_blk_ctl_dev_data
 	}, {
 		/* Sentinel */
 	}
 };
 MODULE_DEVICE_TABLE(of, imx93_blk_ctrl_of_match);

 static struct platform_driver imx93_blk_ctrl_driver = {
 	.probe = imx93_blk_ctrl_probe,
 	.remove_new = imx93_blk_ctrl_remove,
 	.driver = {
 		.name = "imx93-blk-ctrl",
 		.of_match_table = imx93_blk_ctrl_of_match,
 	},
 };
 module_platform_driver(imx93_blk_ctrl_driver);

 MODULE_AUTHOR("Peng Fan <peng.fan@nxp.com>");
 MODULE_DESCRIPTION("i.MX93 BLK CTRL driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright 2022 NXP, Peng Fan <peng.fan@nxp.com>
	*/

	#include <linux/clk.h>
	#include <linux/device.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/platform_device.h>
	#include <linux/pm_domain.h>
	#include <linux/pm_runtime.h>
	#include <linux/regmap.h>
	#include <linux/sizes.h>

	#include <dt-bindings/power/fsl,imx93-power.h>

	#define BLK_SFT_RSTN 0x0
	#define BLK_CLK_EN 0x4
	#define BLK_MAX_CLKS 4

	#define DOMAIN_MAX_CLKS 4

	#define LCDIF_QOS_REG 0xC
	#define LCDIF_DEFAULT_QOS_OFF 12
	#define LCDIF_CFG_QOS_OFF 8

	#define PXP_QOS_REG 0x10
	#define PXP_R_DEFAULT_QOS_OFF 28
	#define PXP_R_CFG_QOS_OFF 24
	#define PXP_W_DEFAULT_QOS_OFF 20
	#define PXP_W_CFG_QOS_OFF 16

	#define ISI_CACHE_REG 0x14

	#define ISI_QOS_REG 0x1C
	#define ISI_V_DEFAULT_QOS_OFF 28
	#define ISI_V_CFG_QOS_OFF 24
	#define ISI_U_DEFAULT_QOS_OFF 20
	#define ISI_U_CFG_QOS_OFF 16
	#define ISI_Y_R_DEFAULT_QOS_OFF 12
	#define ISI_Y_R_CFG_QOS_OFF 8
	#define ISI_Y_W_DEFAULT_QOS_OFF 4
	#define ISI_Y_W_CFG_QOS_OFF 0

	#define PRIO_MASK 0xF

	#define PRIO(X) (X)

	struct imx93_blk_ctrl_domain;

	struct imx93_blk_ctrl {
	struct device *dev;
	struct regmap *regmap;
	int num_clks;
	struct clk_bulk_data clks[BLK_MAX_CLKS];
	struct imx93_blk_ctrl_domain *domains;
	struct genpd_onecell_data onecell_data;
	};

	#define DOMAIN_MAX_QOS 4

	struct imx93_blk_ctrl_qos {
	u32 reg;
	u32 cfg_off;
	u32 default_prio;
	u32 cfg_prio;
	};

	struct imx93_blk_ctrl_domain_data {
	const char *name;
	const char * const *clk_names;
	int num_clks;
	u32 rst_mask;
	u32 clk_mask;
	int num_qos;
	struct imx93_blk_ctrl_qos qos[DOMAIN_MAX_QOS];
	};

	struct imx93_blk_ctrl_domain {
	struct generic_pm_domain genpd;
	const struct imx93_blk_ctrl_domain_data *data;
	struct clk_bulk_data clks[DOMAIN_MAX_CLKS];
	struct imx93_blk_ctrl *bc;
	};

	struct imx93_blk_ctrl_data {
	const struct imx93_blk_ctrl_domain_data *domains;
	int num_domains;
	const char * const *clk_names;
	int num_clks;
	const struct regmap_access_table *reg_access_table;
	};

	static inline struct imx93_blk_ctrl_domain *
	to_imx93_blk_ctrl_domain(struct generic_pm_domain *genpd)
	{
	return container_of(genpd, struct imx93_blk_ctrl_domain, genpd);
	}

	static int imx93_blk_ctrl_set_qos(struct imx93_blk_ctrl_domain *domain)
	{
	const struct imx93_blk_ctrl_domain_data *data = domain->data;
	struct imx93_blk_ctrl *bc = domain->bc;
	const struct imx93_blk_ctrl_qos *qos;
	u32 val, mask;
	int i;

	for (i = 0; i < data->num_qos; i++) {
	qos = &data->qos[i];

	mask = PRIO_MASK << qos->cfg_off;
	mask \|= PRIO_MASK << (qos->cfg_off + 4);
	val = qos->cfg_prio << qos->cfg_off;
	val \|= qos->default_prio << (qos->cfg_off + 4);

	regmap_write_bits(bc->regmap, qos->reg, mask, val);

	dev_dbg(bc->dev, "data->qos[i].reg 0x%x 0x%x\n", qos->reg, val);
	}

	return 0;
	}

	static int imx93_blk_ctrl_power_on(struct generic_pm_domain *genpd)
	{
	struct imx93_blk_ctrl_domain *domain = to_imx93_blk_ctrl_domain(genpd);
	const struct imx93_blk_ctrl_domain_data *data = domain->data;
	struct imx93_blk_ctrl *bc = domain->bc;
	int ret;

	ret = clk_bulk_prepare_enable(bc->num_clks, bc->clks);
	if (ret) {
	dev_err(bc->dev, "failed to enable bus clocks\n");
	return ret;
	}

	ret = clk_bulk_prepare_enable(data->num_clks, domain->clks);
	if (ret) {
	clk_bulk_disable_unprepare(bc->num_clks, bc->clks);
	dev_err(bc->dev, "failed to enable clocks\n");
	return ret;
	}

	ret = pm_runtime_get_sync(bc->dev);
	if (ret < 0) {
	pm_runtime_put_noidle(bc->dev);
	dev_err(bc->dev, "failed to power up domain\n");
	goto disable_clk;
	}

	/* ungate clk */
	regmap_clear_bits(bc->regmap, BLK_CLK_EN, data->clk_mask);

	/* release reset */
	regmap_set_bits(bc->regmap, BLK_SFT_RSTN, data->rst_mask);

	dev_dbg(bc->dev, "pd_on: name: %s\n", genpd->name);

	return imx93_blk_ctrl_set_qos(domain);

	disable_clk:
	clk_bulk_disable_unprepare(data->num_clks, domain->clks);

	clk_bulk_disable_unprepare(bc->num_clks, bc->clks);

	return ret;
	}

	static int imx93_blk_ctrl_power_off(struct generic_pm_domain *genpd)
	{
	struct imx93_blk_ctrl_domain *domain = to_imx93_blk_ctrl_domain(genpd);
	const struct imx93_blk_ctrl_domain_data *data = domain->data;
	struct imx93_blk_ctrl *bc = domain->bc;

	dev_dbg(bc->dev, "pd_off: name: %s\n", genpd->name);

	regmap_clear_bits(bc->regmap, BLK_SFT_RSTN, data->rst_mask);
	regmap_set_bits(bc->regmap, BLK_CLK_EN, data->clk_mask);

	pm_runtime_put(bc->dev);

	clk_bulk_disable_unprepare(data->num_clks, domain->clks);

	clk_bulk_disable_unprepare(bc->num_clks, bc->clks);

	return 0;
	}

	static struct lock_class_key blk_ctrl_genpd_lock_class;

	static int imx93_blk_ctrl_probe(struct platform_device *pdev)
	{
	struct device *dev = &pdev->dev;
	const struct imx93_blk_ctrl_data *bc_data = of_device_get_match_data(dev);
	struct imx93_blk_ctrl *bc;
	void __iomem *base;
	int i, ret;

	struct regmap_config regmap_config = {
	.reg_bits = 32,
	.val_bits = 32,
	.reg_stride = 4,
	.rd_table = bc_data->reg_access_table,
	.wr_table = bc_data->reg_access_table,
	.max_register = SZ_4K,
	};

	bc = devm_kzalloc(dev, sizeof(*bc), GFP_KERNEL);
	if (!bc)
	return -ENOMEM;

	bc->dev = dev;

	base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(base))
	return PTR_ERR(base);

	bc->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
	if (IS_ERR(bc->regmap))
	return dev_err_probe(dev, PTR_ERR(bc->regmap),
	"failed to init regmap\n");

	bc->domains = devm_kcalloc(dev, bc_data->num_domains,
	sizeof(struct imx93_blk_ctrl_domain),
	GFP_KERNEL);
	if (!bc->domains)
	return -ENOMEM;

	bc->onecell_data.num_domains = bc_data->num_domains;
	bc->onecell_data.domains =
	devm_kcalloc(dev, bc_data->num_domains,
	sizeof(struct generic_pm_domain *), GFP_KERNEL);
	if (!bc->onecell_data.domains)
	return -ENOMEM;

	for (i = 0; i < bc_data->num_clks; i++)
	bc->clks[i].id = bc_data->clk_names[i];
	bc->num_clks = bc_data->num_clks;

	ret = devm_clk_bulk_get(dev, bc->num_clks, bc->clks);
	if (ret) {
	dev_err_probe(dev, ret, "failed to get bus clock\n");
	return ret;
	}

	for (i = 0; i < bc_data->num_domains; i++) {
	const struct imx93_blk_ctrl_domain_data *data = &bc_data->domains[i];
	struct imx93_blk_ctrl_domain *domain = &bc->domains[i];
	int j;

	domain->data = data;

	for (j = 0; j < data->num_clks; j++)
	domain->clks[j].id = data->clk_names[j];

	ret = devm_clk_bulk_get(dev, data->num_clks, domain->clks);
	if (ret) {
	dev_err_probe(dev, ret, "failed to get clock\n");
	goto cleanup_pds;
	}

	domain->genpd.name = data->name;
	domain->genpd.power_on = imx93_blk_ctrl_power_on;
	domain->genpd.power_off = imx93_blk_ctrl_power_off;
	domain->bc = bc;

	ret = pm_genpd_init(&domain->genpd, NULL, true);
	if (ret) {
	dev_err_probe(dev, ret, "failed to init power domain\n");
	goto cleanup_pds;
	}

	/*
	* We use runtime PM to trigger power on/off of the upstream GPC
	* domain, as a strict hierarchical parent/child power domain
	* setup doesn't allow us to meet the sequencing requirements.
	* This means we have nested locking of genpd locks, without the
	* nesting being visible at the genpd level, so we need a
	* separate lock class to make lockdep aware of the fact that
	* this are separate domain locks that can be nested without a
	* self-deadlock.
	*/
	lockdep_set_class(&domain->genpd.mlock,
	&blk_ctrl_genpd_lock_class);

	bc->onecell_data.domains[i] = &domain->genpd;
	}

	pm_runtime_enable(dev);

	ret = of_genpd_add_provider_onecell(dev->of_node, &bc->onecell_data);
	if (ret) {
	dev_err_probe(dev, ret, "failed to add power domain provider\n");
	goto cleanup_pds;
	}

	dev_set_drvdata(dev, bc);

	return 0;

	cleanup_pds:
	for (i--; i >= 0; i--)
	pm_genpd_remove(&bc->domains[i].genpd);

	return ret;
	}

	static void imx93_blk_ctrl_remove(struct platform_device *pdev)
	{
	struct imx93_blk_ctrl *bc = dev_get_drvdata(&pdev->dev);
	int i;

	of_genpd_del_provider(pdev->dev.of_node);

	for (i = 0; bc->onecell_data.num_domains; i++) {
	struct imx93_blk_ctrl_domain *domain = &bc->domains[i];

	pm_genpd_remove(&domain->genpd);
	}
	}

	static const struct imx93_blk_ctrl_domain_data imx93_media_blk_ctl_domain_data[] = {
	[IMX93_MEDIABLK_PD_MIPI_DSI] = {
	.name = "mediablk-mipi-dsi",
	.clk_names = (const char *[]){ "dsi" },
	.num_clks = 1,
	.rst_mask = BIT(11) \| BIT(12),
	.clk_mask = BIT(11) \| BIT(12),
	},
	[IMX93_MEDIABLK_PD_MIPI_CSI] = {
	.name = "mediablk-mipi-csi",
	.clk_names = (const char *[]){ "cam", "csi" },
	.num_clks = 2,
	.rst_mask = BIT(9) \| BIT(10),
	.clk_mask = BIT(9) \| BIT(10),
	},
	[IMX93_MEDIABLK_PD_PXP] = {
	.name = "mediablk-pxp",
	.clk_names = (const char *[]){ "pxp" },
	.num_clks = 1,
	.rst_mask = BIT(7) \| BIT(8),
	.clk_mask = BIT(7) \| BIT(8),
	.num_qos = 2,
	.qos = {
	{
	.reg = PXP_QOS_REG,
	.cfg_off = PXP_R_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(6),
	}, {
	.reg = PXP_QOS_REG,
	.cfg_off = PXP_W_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(6),
	}
	}
	},
	[IMX93_MEDIABLK_PD_LCDIF] = {
	.name = "mediablk-lcdif",
	.clk_names = (const char *[]){ "disp", "lcdif" },
	.num_clks = 2,
	.rst_mask = BIT(4) \| BIT(5) \| BIT(6),
	.clk_mask = BIT(4) \| BIT(5) \| BIT(6),
	.num_qos = 1,
	.qos = {
	{
	.reg = LCDIF_QOS_REG,
	.cfg_off = LCDIF_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(7),
	}
	}
	},
	[IMX93_MEDIABLK_PD_ISI] = {
	.name = "mediablk-isi",
	.clk_names = (const char *[]){ "isi" },
	.num_clks = 1,
	.rst_mask = BIT(2) \| BIT(3),
	.clk_mask = BIT(2) \| BIT(3),
	.num_qos = 4,
	.qos = {
	{
	.reg = ISI_QOS_REG,
	.cfg_off = ISI_Y_W_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(7),
	}, {
	.reg = ISI_QOS_REG,
	.cfg_off = ISI_Y_R_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(7),
	}, {
	.reg = ISI_QOS_REG,
	.cfg_off = ISI_U_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(7),
	}, {
	.reg = ISI_QOS_REG,
	.cfg_off = ISI_V_CFG_QOS_OFF,
	.default_prio = PRIO(3),
	.cfg_prio = PRIO(7),
	}
	}
	},
	};

	static const struct regmap_range imx93_media_blk_ctl_yes_ranges[] = {
	regmap_reg_range(BLK_SFT_RSTN, BLK_CLK_EN),
	regmap_reg_range(LCDIF_QOS_REG, ISI_CACHE_REG),
	regmap_reg_range(ISI_QOS_REG, ISI_QOS_REG),
	};

	static const struct regmap_access_table imx93_media_blk_ctl_access_table = {
	.yes_ranges = imx93_media_blk_ctl_yes_ranges,
	.n_yes_ranges = ARRAY_SIZE(imx93_media_blk_ctl_yes_ranges),
	};

	static const struct imx93_blk_ctrl_data imx93_media_blk_ctl_dev_data = {
	.domains = imx93_media_blk_ctl_domain_data,
	.num_domains = ARRAY_SIZE(imx93_media_blk_ctl_domain_data),
	.clk_names = (const char *[]){ "axi", "apb", "nic", },
	.num_clks = 3,
	.reg_access_table = &imx93_media_blk_ctl_access_table,
	};

	static const struct of_device_id imx93_blk_ctrl_of_match[] = {
	{
	.compatible = "fsl,imx93-media-blk-ctrl",
	.data = &imx93_media_blk_ctl_dev_data
	}, {
	/* Sentinel */
	}
	};
	MODULE_DEVICE_TABLE(of, imx93_blk_ctrl_of_match);

	static struct platform_driver imx93_blk_ctrl_driver = {
	.probe = imx93_blk_ctrl_probe,
	.remove_new = imx93_blk_ctrl_remove,
	.driver = {
	.name = "imx93-blk-ctrl",
	.of_match_table = imx93_blk_ctrl_of_match,
	},
	};
	module_platform_driver(imx93_blk_ctrl_driver);

	MODULE_AUTHOR("Peng Fan <peng.fan@nxp.com>");
	MODULE_DESCRIPTION("i.MX93 BLK CTRL driver");
	MODULE_LICENSE("GPL");