1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <linux/spmi.h>
17 #include <soc/qcom/qcom-spmi-pmic.h>
32 	struct qcom_spmi_pmic pmic;  member
70 	{ .compatible = "qcom,spmi-pmic", .data = N_USIDS(1) },
75  * A PMIC can be represented by multiple SPMI devices, but
76  * only the base PMIC device will contain a reference to
79  * This function takes a pointer to a pmic device and
80  * returns a pointer to the base PMIC device.
95 	if (sdev->usid % ctx->num_usids == 0) {  in qcom_pmic_get_base_usid()
96 		get_device(&sdev->dev);  in qcom_pmic_get_base_usid()
100 	function_parent_usid = sdev->usid;  in qcom_pmic_get_base_usid()
105 	 * number of USIDs in the PMIC array, e.g. for a PMIC with 2 USIDs  in qcom_pmic_get_base_usid()
109 	spmi_bus = of_get_parent(sdev->dev.of_node);  in qcom_pmic_get_base_usid()
110 	sdev = ERR_PTR(-ENODATA);  in qcom_pmic_get_base_usid()
119 		if (pmic_addr == function_parent_usid - (ctx->num_usids - 1)) {  in qcom_pmic_get_base_usid()
123 				 * If the base USID for this PMIC hasn't been  in qcom_pmic_get_base_usid()
126 				sdev = ERR_PTR(-EPROBE_DEFER);  in qcom_pmic_get_base_usid()
155 		ret = -EPROBE_DEFER;  in pmic_spmi_get_base_revid()
158 	memcpy(&ctx->pmic, &base_ctx->pmic, sizeof(ctx->pmic));  in pmic_spmi_get_base_revid()
162 	put_device(&base->dev);  in pmic_spmi_get_base_revid()
168 				 struct qcom_spmi_pmic *pmic)  in pmic_spmi_load_revid()  argument
172 	ret = regmap_read(map, PMIC_TYPE, &pmic->type);  in pmic_spmi_load_revid()
176 	if (pmic->type != PMIC_TYPE_VALUE)  in pmic_spmi_load_revid()
179 	ret = regmap_read(map, PMIC_SUBTYPE, &pmic->subtype);  in pmic_spmi_load_revid()
183 	pmic->name = of_match_device(pmic_spmi_id_table, dev)->compatible;  in pmic_spmi_load_revid()
185 	ret = regmap_read(map, PMIC_REV2, &pmic->rev2);  in pmic_spmi_load_revid()
189 	ret = regmap_read(map, PMIC_REV3, &pmic->minor);  in pmic_spmi_load_revid()
193 	ret = regmap_read(map, PMIC_REV4, &pmic->major);  in pmic_spmi_load_revid()
197 	if (pmic->subtype == PMI8998_SUBTYPE || pmic->subtype == PM660_SUBTYPE) {  in pmic_spmi_load_revid()
198 		ret = regmap_read(map, PMIC_FAB_ID, &pmic->fab_id);  in pmic_spmi_load_revid()
209 	if ((pmic->subtype == PM8941_SUBTYPE || pmic->subtype == PM8226_SUBTYPE) &&  in pmic_spmi_load_revid()
210 	    pmic->major < PMIC_REV4_V2)  in pmic_spmi_load_revid()
211 		pmic->major++;  in pmic_spmi_load_revid()
213 	if (pmic->subtype == PM8110_SUBTYPE)  in pmic_spmi_load_revid()
214 		pmic->minor = pmic->rev2;  in pmic_spmi_load_revid()
217 		pmic->subtype, pmic->name, pmic->major, pmic->minor);  in pmic_spmi_load_revid()
223  * qcom_pmic_get() - Get a pointer to the base PMIC device
225  * This function takes a struct device for a driver which is a child of a PMIC.
226  * And locates the PMIC revision information for it.
228  * @dev: the pmic function device
234 	struct qcom_spmi_dev *spmi;  in qcom_pmic_get()  local
237 	 * Make sure the device is actually a child of a PMIC  in qcom_pmic_get()
239 	if (!of_match_device(pmic_spmi_id_table, dev->parent))  in qcom_pmic_get()
240 		return ERR_PTR(-EINVAL);  in qcom_pmic_get()
242 	sdev = to_spmi_device(dev->parent);  in qcom_pmic_get()
243 	spmi = dev_get_drvdata(&sdev->dev);  in qcom_pmic_get()
245 	return &spmi->pmic;  in qcom_pmic_get()
266 	ctx = devm_kzalloc(&sdev->dev, sizeof(*ctx), GFP_KERNEL);  in pmic_spmi_probe()
268 		return -ENOMEM;  in pmic_spmi_probe()
270 	ctx->num_usids = (uintptr_t)device_get_match_data(&sdev->dev);  in pmic_spmi_probe()
272 	/* Only the first slave id for a PMIC contains this information */  in pmic_spmi_probe()
273 	if (sdev->usid % ctx->num_usids == 0) {  in pmic_spmi_probe()
274 		ret = pmic_spmi_load_revid(regmap, &sdev->dev, &ctx->pmic);  in pmic_spmi_probe()
287 	return devm_of_platform_populate(&sdev->dev);  in pmic_spmi_probe()
303 		.name = "pmic-spmi",
309 MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
310 MODULE_ALIAS("spmi:spmi-pmic");
313 MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");