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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Core driver for Renesas Synchronization Management Unit (SMU) devices.4 *5 * Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company.6 */7 8#include <linux/init.h>9#include <linux/kernel.h>10#include <linux/mfd/core.h>11#include <linux/mfd/rsmu.h>12#include <linux/module.h>13#include <linux/of.h>14#include <linux/regmap.h>15#include <linux/slab.h>16 17#include "rsmu.h"18 19enum {20 RSMU_PHC = 0,21 RSMU_CDEV = 1,22 RSMU_N_DEVS = 2,23};24 25static struct mfd_cell rsmu_cm_devs[] = {26 [RSMU_PHC] = {27 .name = "8a3400x-phc",28 },29 [RSMU_CDEV] = {30 .name = "8a3400x-cdev",31 },32};33 34static struct mfd_cell rsmu_sabre_devs[] = {35 [RSMU_PHC] = {36 .name = "82p33x1x-phc",37 },38 [RSMU_CDEV] = {39 .name = "82p33x1x-cdev",40 },41};42 43static struct mfd_cell rsmu_sl_devs[] = {44 [RSMU_PHC] = {45 .name = "8v19n85x-phc",46 },47 [RSMU_CDEV] = {48 .name = "8v19n85x-cdev",49 },50};51 52int rsmu_core_init(struct rsmu_ddata *rsmu)53{54 struct mfd_cell *cells;55 int ret;56 57 switch (rsmu->type) {58 case RSMU_CM:59 cells = rsmu_cm_devs;60 break;61 case RSMU_SABRE:62 cells = rsmu_sabre_devs;63 break;64 case RSMU_SL:65 cells = rsmu_sl_devs;66 break;67 default:68 dev_err(rsmu->dev, "Unsupported RSMU device type: %d\n", rsmu->type);69 return -ENODEV;70 }71 72 mutex_init(&rsmu->lock);73 74 ret = devm_mfd_add_devices(rsmu->dev, PLATFORM_DEVID_AUTO, cells,75 RSMU_N_DEVS, NULL, 0, NULL);76 if (ret < 0)77 dev_err(rsmu->dev, "Failed to register sub-devices: %d\n", ret);78 79 return ret;80}81EXPORT_SYMBOL_GPL(rsmu_core_init);82 83void rsmu_core_exit(struct rsmu_ddata *rsmu)84{85 mutex_destroy(&rsmu->lock);86}87EXPORT_SYMBOL_GPL(rsmu_core_exit);88 89MODULE_DESCRIPTION("Renesas SMU core driver");90MODULE_LICENSE("GPL");91