1 // SPDX-License-Identifier: GPL-2.0+
3  * PM MFD driver for Broadcom BCM2835
5  * This driver binds to the PM block and creates the MFD device for
11 #include <linux/mfd/bcm2835-pm.h>
21 	{ .name = "bcm2835-wdt" },
25 	{ .name = "bcm2835-power" },
29 				struct bcm2835_pm *pm)  in bcm2835_pm_get_pdata()  argument
31 	if (of_property_present(pm->dev->of_node, "reg-names")) {  in bcm2835_pm_get_pdata()
34 		pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");  in bcm2835_pm_get_pdata()
35 		if (IS_ERR(pm->base))  in bcm2835_pm_get_pdata()
36 			return PTR_ERR(pm->base);  in bcm2835_pm_get_pdata()
40 			pm->asb = devm_ioremap_resource(&pdev->dev, res);  in bcm2835_pm_get_pdata()
41 			if (IS_ERR(pm->asb))  in bcm2835_pm_get_pdata()
42 				pm->asb = NULL;  in bcm2835_pm_get_pdata()
48 			pm->rpivid_asb = devm_ioremap_resource(&pdev->dev, res);  in bcm2835_pm_get_pdata()
49 			if (IS_ERR(pm->rpivid_asb))  in bcm2835_pm_get_pdata()
50 				pm->rpivid_asb = NULL;  in bcm2835_pm_get_pdata()
56 	/* If no 'reg-names' property is found we can assume we're using old DTB. */  in bcm2835_pm_get_pdata()
57 	pm->base = devm_platform_ioremap_resource(pdev, 0);  in bcm2835_pm_get_pdata()
58 	if (IS_ERR(pm->base))  in bcm2835_pm_get_pdata()
59 		return PTR_ERR(pm->base);  in bcm2835_pm_get_pdata()
61 	pm->asb = devm_platform_ioremap_resource(pdev, 1);  in bcm2835_pm_get_pdata()
62 	if (IS_ERR(pm->asb))  in bcm2835_pm_get_pdata()
63 		pm->asb = NULL;  in bcm2835_pm_get_pdata()
65 	pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 2);  in bcm2835_pm_get_pdata()
66 	if (IS_ERR(pm->rpivid_asb))  in bcm2835_pm_get_pdata()
67 		pm->rpivid_asb = NULL;  in bcm2835_pm_get_pdata()
74 	struct device *dev = &pdev->dev;  in bcm2835_pm_probe()
75 	struct bcm2835_pm *pm;  in bcm2835_pm_probe()  local
78 	pm = devm_kzalloc(dev, sizeof(*pm), GFP_KERNEL);  in bcm2835_pm_probe()
79 	if (!pm)  in bcm2835_pm_probe()
80 		return -ENOMEM;  in bcm2835_pm_probe()
81 	platform_set_drvdata(pdev, pm);  in bcm2835_pm_probe()
83 	pm->dev = dev;  in bcm2835_pm_probe()
85 	ret = bcm2835_pm_get_pdata(pdev, pm);  in bcm2835_pm_probe()
89 	ret = devm_mfd_add_devices(dev, -1,  in bcm2835_pm_probe()
97 	 * bcm2835-pm binding as the key for whether we can reference  in bcm2835_pm_probe()
98 	 * the full PM register range and support power domains.  in bcm2835_pm_probe()
100 	if (pm->asb)  in bcm2835_pm_probe()
101 		return devm_mfd_add_devices(dev, -1, bcm2835_power_devs,  in bcm2835_pm_probe()
108 	{ .compatible = "brcm,bcm2835-pm-wdt", },
109 	{ .compatible = "brcm,bcm2835-pm", },
110 	{ .compatible = "brcm,bcm2711-pm", },
118 		.name =	"bcm2835-pm",
125 MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM MFD");