124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2020 MediaTek Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/mfd/core.h>
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#include <linux/of_irq.h>
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#include "../inc/mt6360_pmu.h"
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static struct mfd_cell mt6360_pmu_subdevs[MT6360_PMUDEV_MAX] = {
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{
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.name = "mt6360_pmu_core",
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.of_compatible = "mediatek,mt6360_pmu_core",
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.pm_runtime_no_callbacks = true,
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},
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{
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.name = "mt6360_pmu_adc",
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.of_compatible = "mediatek,mt6360_pmu_adc",
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.pm_runtime_no_callbacks = true,
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},
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{
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.name = "mt6360_pmu_chg",
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.of_compatible = "mediatek,mt6360_pmu_chg",
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.pm_runtime_no_callbacks = true,
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},
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{
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.name = "mt6360_pmu_fled",
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.of_compatible = "mediatek,mt6360_pmu_fled",
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.pm_runtime_no_callbacks = true,
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},
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{
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.name = "mt6360_pmu_rgbled",
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.of_compatible = "mediatek,mt6360_pmu_rgbled",
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.pm_runtime_no_callbacks = true,
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},
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};
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static int mt6360_pmu_init_of_subdevs(struct mt6360_pmu_info *mpi)
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{
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struct mfd_cell *cell;
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struct device_node *np;
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struct resource *irq_res;
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int i, irq_cnt, ret;
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for (i = 0; i < MT6360_PMUDEV_MAX; i++) {
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cell = mt6360_pmu_subdevs + i;
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np = NULL;
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for_each_child_of_node(mpi->dev->of_node, np) {
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if (of_device_is_compatible(np, cell->of_compatible))
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break;
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}
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if (!np)
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continue;
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irq_cnt = of_irq_count(np);
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if (!irq_cnt)
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continue;
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irq_res = devm_kzalloc(mpi->dev,
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irq_cnt * sizeof(*irq_res), GFP_KERNEL);
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if (!irq_res)
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return -ENOMEM;
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ret = of_irq_to_resource_table(np, irq_res, irq_cnt);
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cell->resources = irq_res;
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cell->num_resources = ret;
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}
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return 0;
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}
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static int mt6360_pmu_init_nonof_subdevs(struct mt6360_pmu_info *mpi)
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{
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struct mt6360_pmu_platform_data *pdata = dev_get_platdata(mpi->dev);
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struct mfd_cell *cell;
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struct resource *res;
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int i, j, ret;
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for (i = 0; i < MT6360_PMUDEV_MAX; i++) {
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cell = mt6360_pmu_subdevs + i;
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for (j = 0; j < pdata->dev_irq_res_cnt[i]; j++) {
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res = pdata->dev_irq_resources[i] + j;
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ret = irq_create_mapping(mpi->irq_domain,
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res->start);
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res->start = res->end = ret;
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}
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cell->platform_data = pdata->dev_platform_data[i];
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cell->pdata_size = pdata->dev_pdata_size[i];
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cell->resources = pdata->dev_irq_resources[i];
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cell->num_resources = pdata->dev_irq_res_cnt[i];
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}
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return 0;
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}
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static inline int mt6360_pmu_init_subdevs(struct mt6360_pmu_info *mpi)
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{
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return (mpi->dev->of_node ? mt6360_pmu_init_of_subdevs(mpi) :
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mt6360_pmu_init_nonof_subdevs(mpi));
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}
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int mt6360_pmu_subdev_register(struct mt6360_pmu_info *mpi)
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{
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int ret;
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ret = mt6360_pmu_init_subdevs(mpi);
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if (ret < 0) {
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dev_err(mpi->dev, "fail to init subdevs\n");
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return ret;
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}
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ret = mfd_add_devices(mpi->dev, PLATFORM_DEVID_AUTO, mt6360_pmu_subdevs,
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ARRAY_SIZE(mt6360_pmu_subdevs), NULL, 0, NULL);
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if (ret < 0) {
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dev_err(mpi->dev, "fail to add subdevs\n");
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(mt6360_pmu_subdev_register);
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void mt6360_pmu_subdev_unregister(struct mt6360_pmu_info *mpi)
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{
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mfd_remove_devices(mpi->dev);
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}
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EXPORT_SYMBOL_GPL(mt6360_pmu_subdev_unregister);
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