1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/spmi.h>
15 #include <soc/qcom/qcom-spmi-pmic.h>
30 	struct qcom_spmi_pmic pmic;  member
65 	{ .compatible = "qcom,spmi-pmic", .data = N_USIDS(1) },
70  * A PMIC can be represented by multiple SPMI devices, but
71  * only the base PMIC device will contain a reference to
74  * This function takes a pointer to a pmic device and
75  * returns a pointer to the base PMIC device.
89 	ctx = dev_get_drvdata(&sdev->dev);  in qcom_pmic_get_base_usid()
95 	if (sdev->usid % ctx->num_usids == 0)  in qcom_pmic_get_base_usid()
98 	function_parent_usid = sdev->usid;  in qcom_pmic_get_base_usid()
103 	 * number of USIDs in the PMIC array, e.g. for a PMIC with 2 USIDs  in qcom_pmic_get_base_usid()
107 	spmi_bus = of_get_parent(sdev->dev.of_node);  in qcom_pmic_get_base_usid()
116 		if (pmic_addr == function_parent_usid - (ctx->num_usids - 1)) {  in qcom_pmic_get_base_usid()
119 				 * If the base USID for this PMIC hasn't probed yet  in qcom_pmic_get_base_usid()
124 				return ERR_PTR(-EPROBE_DEFER);  in qcom_pmic_get_base_usid()
127 	} while (other_usid->sibling);  in qcom_pmic_get_base_usid()
129 	return ERR_PTR(-ENODATA);  in qcom_pmic_get_base_usid()
133 				 struct qcom_spmi_pmic *pmic)  in pmic_spmi_load_revid()  argument
137 	ret = regmap_read(map, PMIC_TYPE, &pmic->type);  in pmic_spmi_load_revid()
141 	if (pmic->type != PMIC_TYPE_VALUE)  in pmic_spmi_load_revid()
144 	ret = regmap_read(map, PMIC_SUBTYPE, &pmic->subtype);  in pmic_spmi_load_revid()
148 	pmic->name = of_match_device(pmic_spmi_id_table, dev)->compatible;  in pmic_spmi_load_revid()
150 	ret = regmap_read(map, PMIC_REV2, &pmic->rev2);  in pmic_spmi_load_revid()
154 	ret = regmap_read(map, PMIC_REV3, &pmic->minor);  in pmic_spmi_load_revid()
158 	ret = regmap_read(map, PMIC_REV4, &pmic->major);  in pmic_spmi_load_revid()
162 	if (pmic->subtype == PMI8998_SUBTYPE || pmic->subtype == PM660_SUBTYPE) {  in pmic_spmi_load_revid()
163 		ret = regmap_read(map, PMIC_FAB_ID, &pmic->fab_id);  in pmic_spmi_load_revid()
174 	if ((pmic->subtype == PM8941_SUBTYPE || pmic->subtype == PM8226_SUBTYPE) &&  in pmic_spmi_load_revid()
175 	    pmic->major < PMIC_REV4_V2)  in pmic_spmi_load_revid()
176 		pmic->major++;  in pmic_spmi_load_revid()
178 	if (pmic->subtype == PM8110_SUBTYPE)  in pmic_spmi_load_revid()
179 		pmic->minor = pmic->rev2;  in pmic_spmi_load_revid()
182 		pmic->subtype, pmic->name, pmic->major, pmic->minor);  in pmic_spmi_load_revid()
188  * qcom_pmic_get() - Get a pointer to the base PMIC device
190  * This function takes a struct device for a driver which is a child of a PMIC.
191  * And locates the PMIC revision information for it.
193  * @dev: the pmic function device
199 	struct qcom_spmi_dev *spmi;  in qcom_pmic_get()  local
202 	 * Make sure the device is actually a child of a PMIC  in qcom_pmic_get()
204 	if (!of_match_device(pmic_spmi_id_table, dev->parent))  in qcom_pmic_get()
205 		return ERR_PTR(-EINVAL);  in qcom_pmic_get()
207 	sdev = qcom_pmic_get_base_usid(dev->parent);  in qcom_pmic_get()
212 	spmi = dev_get_drvdata(&sdev->dev);  in qcom_pmic_get()
214 	return &spmi->pmic;  in qcom_pmic_get()
235 	ctx = devm_kzalloc(&sdev->dev, sizeof(*ctx), GFP_KERNEL);  in pmic_spmi_probe()
237 		return -ENOMEM;  in pmic_spmi_probe()
239 	ctx->num_usids = (uintptr_t)of_device_get_match_data(&sdev->dev);  in pmic_spmi_probe()
241 	/* Only the first slave id for a PMIC contains this information */  in pmic_spmi_probe()
242 	if (sdev->usid % ctx->num_usids == 0) {  in pmic_spmi_probe()
243 		ret = pmic_spmi_load_revid(regmap, &sdev->dev, &ctx->pmic);  in pmic_spmi_probe()
249 	return devm_of_platform_populate(&sdev->dev);  in pmic_spmi_probe()
257 		.name = "pmic-spmi",
263 MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
264 MODULE_ALIAS("spmi:spmi-pmic");
267 MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");