1 // SPDX-License-Identifier: GPL-2.0
7  * Exynos - CHIP ID support
12  * Samsung Exynos SoC Adaptive Supply Voltage and Chip ID support
23 #include <linux/soc/samsung/exynos-chipid.h>
26 #include "exynos-asv.h"
29 	unsigned int rev_reg;		/* revision register offset */
30 	unsigned int main_rev_shift;	/* main revision offset in rev_reg */
31 	unsigned int sub_rev_shift;	/* sub revision offset in rev_reg */
36 	u32 revision;  member
41 	unsigned int id;  member
44 	/* Compatible with: samsung,exynos4210-chipid */
46 	{ "EXYNOS4210", 0x43200000 },	/* EVT0 revision */
58 	/* Compatible with: samsung,exynos850-chipid */
69 		if (product_id == soc_ids[i].id)  in product_id_to_soc_id()
84 	soc_info->product_id = val & EXYNOS_MASK;  in exynos_chipid_get_chipid_info()
86 	if (data->rev_reg != EXYNOS_CHIPID_REG_PRO_ID) {  in exynos_chipid_get_chipid_info()
87 		ret = regmap_read(regmap, data->rev_reg, &val);  in exynos_chipid_get_chipid_info()
91 	main_rev = (val >> data->main_rev_shift) & EXYNOS_REV_PART_MASK;  in exynos_chipid_get_chipid_info()
92 	sub_rev = (val >> data->sub_rev_shift) & EXYNOS_REV_PART_MASK;  in exynos_chipid_get_chipid_info()
93 	soc_info->revision = (main_rev << EXYNOS_REV_PART_SHIFT) | sub_rev;  in exynos_chipid_get_chipid_info()
108 	drv_data = of_device_get_match_data(&pdev->dev);  in exynos_chipid_probe()
110 		return -EINVAL;  in exynos_chipid_probe()
112 	regmap = device_node_to_regmap(pdev->dev.of_node);  in exynos_chipid_probe()
120 	soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr),  in exynos_chipid_probe()
123 		return -ENOMEM;  in exynos_chipid_probe()
125 	soc_dev_attr->family = "Samsung Exynos";  in exynos_chipid_probe()
128 	of_property_read_string(root, "model", &soc_dev_attr->machine);  in exynos_chipid_probe()
131 	soc_dev_attr->revision = devm_kasprintf(&pdev->dev, GFP_KERNEL,  in exynos_chipid_probe()
132 						"%x", soc_info.revision);  in exynos_chipid_probe()
133 	soc_dev_attr->soc_id = product_id_to_soc_id(soc_info.product_id);  in exynos_chipid_probe()
134 	if (!soc_dev_attr->soc_id) {  in exynos_chipid_probe()
136 		return -ENODEV;  in exynos_chipid_probe()
144 	ret = exynos_asv_init(&pdev->dev, regmap);  in exynos_chipid_probe()
150 	dev_info(&pdev->dev, "Exynos: CPU[%s] PRO_ID[0x%x] REV[0x%x] Detected\n",  in exynos_chipid_probe()
151 		 soc_dev_attr->soc_id, soc_info.product_id, soc_info.revision);  in exynos_chipid_probe()
184 		.compatible	= "samsung,exynos4210-chipid",
187 		.compatible	= "samsung,exynos850-chipid",
196 		.name = "exynos-chipid",