1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Freescale QorIQ Platforms GUTS Driver
5 * Copyright (C) 2016 Freescale Semiconductor, Inc.
9 #include <linux/slab.h>
10 #include <linux/module.h>
11 #include <linux/of_fdt.h>
12 #include <linux/sys_soc.h>
13 #include <linux/of_address.h>
14 #include <linux/platform_device.h>
15 #include <linux/fsl/guts.h>
18 struct ccsr_guts __iomem *regs;
22 struct fsl_soc_die_attr {
28 static struct guts *guts;
29 static struct soc_device_attribute soc_dev_attr;
30 static struct soc_device *soc_dev;
33 /* SoC die attribute definition for QorIQ platform */
34 static const struct fsl_soc_die_attr fsl_soc_die[] = {
36 * Power Architecture-based SoCs T Series
39 /* Die: T4240, SoC: T4240/T4160/T4080 */
44 /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
49 /* Die: T2080, SoC: T2080/T2081 */
54 /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
61 * ARM-based SoCs LS Series
64 /* Die: LS1043A, SoC: LS1043A/LS1023A */
69 /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
74 /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
79 /* Die: LS1012A, SoC: LS1012A */
84 /* Die: LS1046A, SoC: LS1046A/LS1026A */
89 /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
94 /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
99 /* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */
104 /* Die: LS1028A, SoC: LS1028A */
112 static const struct fsl_soc_die_attr *fsl_soc_die_match(
113 u32 svr, const struct fsl_soc_die_attr *matches)
115 while (matches->svr) {
116 if (matches->svr == (svr & matches->mask))
123 static u32 fsl_guts_get_svr(void)
127 if (!guts || !guts->regs)
130 if (guts->little_endian)
131 svr = ioread32(&guts->regs->svr);
133 svr = ioread32be(&guts->regs->svr);
138 static int fsl_guts_probe(struct platform_device *pdev)
140 struct device_node *root, *np = pdev->dev.of_node;
141 struct device *dev = &pdev->dev;
142 const struct fsl_soc_die_attr *soc_die;
146 /* Initialize guts */
147 guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL);
151 guts->little_endian = of_property_read_bool(np, "little-endian");
153 guts->regs = devm_platform_ioremap_resource(pdev, 0);
154 if (IS_ERR(guts->regs))
155 return PTR_ERR(guts->regs);
157 /* Register soc device */
158 root = of_find_node_by_path("/");
159 if (of_property_read_string(root, "model", &machine))
160 of_property_read_string_index(root, "compatible", 0, &machine);
162 soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
163 if (!soc_dev_attr.machine) {
170 svr = fsl_guts_get_svr();
171 soc_die = fsl_soc_die_match(svr, fsl_soc_die);
173 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
174 "QorIQ %s", soc_die->die);
176 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
178 if (!soc_dev_attr.family)
180 soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
182 if (!soc_dev_attr.soc_id)
184 soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
185 (svr >> 4) & 0xf, svr & 0xf);
186 if (!soc_dev_attr.revision)
189 soc_dev = soc_device_register(&soc_dev_attr);
191 return PTR_ERR(soc_dev);
193 pr_info("Machine: %s\n", soc_dev_attr.machine);
194 pr_info("SoC family: %s\n", soc_dev_attr.family);
195 pr_info("SoC ID: %s, Revision: %s\n",
196 soc_dev_attr.soc_id, soc_dev_attr.revision);
200 static int fsl_guts_remove(struct platform_device *dev)
202 soc_device_unregister(soc_dev);
207 * Table for matching compatible strings, for device tree
208 * guts node, for Freescale QorIQ SOCs.
210 static const struct of_device_id fsl_guts_of_match[] = {
211 { .compatible = "fsl,qoriq-device-config-1.0", },
212 { .compatible = "fsl,qoriq-device-config-2.0", },
213 { .compatible = "fsl,p1010-guts", },
214 { .compatible = "fsl,p1020-guts", },
215 { .compatible = "fsl,p1021-guts", },
216 { .compatible = "fsl,p1022-guts", },
217 { .compatible = "fsl,p1023-guts", },
218 { .compatible = "fsl,p2020-guts", },
219 { .compatible = "fsl,bsc9131-guts", },
220 { .compatible = "fsl,bsc9132-guts", },
221 { .compatible = "fsl,mpc8536-guts", },
222 { .compatible = "fsl,mpc8544-guts", },
223 { .compatible = "fsl,mpc8548-guts", },
224 { .compatible = "fsl,mpc8568-guts", },
225 { .compatible = "fsl,mpc8569-guts", },
226 { .compatible = "fsl,mpc8572-guts", },
227 { .compatible = "fsl,ls1021a-dcfg", },
228 { .compatible = "fsl,ls1043a-dcfg", },
229 { .compatible = "fsl,ls2080a-dcfg", },
230 { .compatible = "fsl,ls1088a-dcfg", },
231 { .compatible = "fsl,ls1012a-dcfg", },
232 { .compatible = "fsl,ls1046a-dcfg", },
233 { .compatible = "fsl,lx2160a-dcfg", },
234 { .compatible = "fsl,ls1028a-dcfg", },
237 MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
239 static struct platform_driver fsl_guts_driver = {
242 .of_match_table = fsl_guts_of_match,
244 .probe = fsl_guts_probe,
245 .remove = fsl_guts_remove,
248 static int __init fsl_guts_init(void)
250 return platform_driver_register(&fsl_guts_driver);
252 core_initcall(fsl_guts_init);
254 static void __exit fsl_guts_exit(void)
256 platform_driver_unregister(&fsl_guts_driver);
258 module_exit(fsl_guts_exit);