regulator: Remove mtk-dvfsrc-regulator.c

This driver never worked, and never got even compiled, because it was
missing the DVFSRC driver entirely, including headers it relies on!

In preparation of a full refactoring of this driver, remove it.

The Makefile and Kconfig entries are retained, as those are reused
as-is for the refactored code.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patch.msgid.link/20240610085735.147134-6-angelogioacchino.delregno@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/mtk-dvfsrc-regulator.c b/drivers/regulator/mtk-dvfsrc-regulator.c
deleted file mode 100644 (file)
index f1280d4..0000000
--- a/drivers/regulator/mtk-dvfsrc-regulator.c
+++ /dev/null
@@ -1,214 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-//
-// Copyright (c) 2020 MediaTek Inc.
-
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/of_.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/of_regulator.h>
-#include <linux/soc/mediatek/mtk_dvfsrc.h>
-
-#define DVFSRC_ID_VCORE                0
-#define DVFSRC_ID_VSCP         1
-
-#define MT_DVFSRC_REGULAR(match, _name,        _volt_table)    \
-[DVFSRC_ID_##_name] = {                                        \
-       .desc = {                                       \
-               .name = match,                          \
-               .of_match = of_match_ptr(match),        \
-               .ops = &dvfsrc_vcore_ops,               \
-               .type = REGULATOR_VOLTAGE,              \
-               .id = DVFSRC_ID_##_name,                \
-               .owner = THIS_MODULE,                   \
-               .n_voltages = ARRAY_SIZE(_volt_table),  \
-               .volt_table = _volt_table,              \
-       },      \
-}
-
-/*
- * DVFSRC regulators' information
- *
- * @desc: standard fields of regulator description.
- * @voltage_selector:  Selector used for get_voltage_sel() and
- *                        set_voltage_sel() callbacks
- */
-
-struct dvfsrc_regulator {
-       struct regulator_desc   desc;
-};
-
-/*
- * MTK DVFSRC regulators' init data
- *
- * @size: num of regulators
- * @regulator_info: regulator info.
- */
-struct dvfsrc_regulator_init_data {
-       u32 size;
-       struct dvfsrc_regulator *regulator_info;
-};
-
-static inline struct device *to_dvfsrc_dev(struct regulator_dev *rdev)
-{
-       return rdev_get_dev(rdev)->parent;
-}
-
-static int dvfsrc_set_voltage_sel(struct regulator_dev *rdev,
-                                 unsigned int selector)
-{
-       struct device *dvfsrc_dev = to_dvfsrc_dev(rdev);
-       int id = rdev_get_id(rdev);
-
-       if (id == DVFSRC_ID_VCORE)
-               mtk_dvfsrc_send_request(dvfsrc_dev,
-                                       MTK_DVFSRC_CMD_VCORE_REQUEST,
-                                       selector);
-       else if (id == DVFSRC_ID_VSCP)
-               mtk_dvfsrc_send_request(dvfsrc_dev,
-                                       MTK_DVFSRC_CMD_VSCP_REQUEST,
-                                       selector);
-       else
-               return -EINVAL;
-
-       return 0;
-}
-
-static int dvfsrc_get_voltage_sel(struct regulator_dev *rdev)
-{
-       struct device *dvfsrc_dev = to_dvfsrc_dev(rdev);
-       int id = rdev_get_id(rdev);
-       int val, ret;
-
-       if (id == DVFSRC_ID_VCORE)
-               ret = mtk_dvfsrc_query_info(dvfsrc_dev,
-                                           MTK_DVFSRC_CMD_VCORE_LEVEL_QUERY,
-                                           &val);
-       else if (id == DVFSRC_ID_VSCP)
-               ret = mtk_dvfsrc_query_info(dvfsrc_dev,
-                                           MTK_DVFSRC_CMD_VSCP_LEVEL_QUERY,
-                                           &val);
-       else
-               return -EINVAL;
-
-       if (ret != 0)
-               return ret;
-
-       return val;
-}
-
-static const struct regulator_ops dvfsrc_vcore_ops = {
-       .list_voltage = regulator_list_voltage_table,
-       .get_voltage_sel = dvfsrc_get_voltage_sel,
-       .set_voltage_sel = dvfsrc_set_voltage_sel,
-};
-
-static const unsigned int mt8183_voltages[] = {
-       725000,
-       800000,
-};
-
-static struct dvfsrc_regulator mt8183_regulators[] = {
-       MT_DVFSRC_REGULAR("dvfsrc-vcore", VCORE,
-                         mt8183_voltages),
-};
-
-static const struct dvfsrc_regulator_init_data regulator_mt8183_data = {
-       .size = ARRAY_SIZE(mt8183_regulators),
-       .regulator_info = &mt8183_regulators[0],
-};
-
-static const unsigned int mt6873_voltages[] = {
-       575000,
-       600000,
-       650000,
-       725000,
-};
-
-static struct dvfsrc_regulator mt6873_regulators[] = {
-       MT_DVFSRC_REGULAR("dvfsrc-vcore", VCORE,
-                         mt6873_voltages),
-       MT_DVFSRC_REGULAR("dvfsrc-vscp", VSCP,
-                         mt6873_voltages),
-};
-
-static const struct dvfsrc_regulator_init_data regulator_mt6873_data = {
-       .size = ARRAY_SIZE(mt6873_regulators),
-       .regulator_info = &mt6873_regulators[0],
-};
-
-static const struct of_device_id mtk_dvfsrc_regulator_match[] = {
-       {
-               .compatible = "mediatek,mt8183-dvfsrc",
-               .data = &regulator_mt8183_data,
-       }, {
-               .compatible = "mediatek,mt8192-dvfsrc",
-               .data = &regulator_mt6873_data,
-       }, {
-               .compatible = "mediatek,mt6873-dvfsrc",
-               .data = &regulator_mt6873_data,
-       }, {
-               /* sentinel */
-       },
-};
-MODULE_DEVICE_TABLE(of, mtk_dvfsrc_regulator_match);
-
-static int dvfsrc_vcore_regulator_probe(struct platform_device *pdev)
-{
-       const struct of_device_id *match;
-       struct device *dev = &pdev->dev;
-       struct regulator_config config = { };
-       struct regulator_dev *rdev;
-       const struct dvfsrc_regulator_init_data *regulator_init_data;
-       struct dvfsrc_regulator *mt_regulators;
-       int i;
-
-       match = of_match_node(mtk_dvfsrc_regulator_match, dev->parent->of_node);
-
-       if (!match) {
-               dev_err(dev, "invalid compatible string\n");
-               return -ENODEV;
-       }
-
-       regulator_init_data = match->data;
-
-       mt_regulators = regulator_init_data->regulator_info;
-       for (i = 0; i < regulator_init_data->size; i++) {
-               config.dev = dev->parent;
-               config.driver_data = (mt_regulators + i);
-               rdev = devm_regulator_register(dev, &(mt_regulators + i)->desc,
-                                              &config);
-               if (IS_ERR(rdev)) {
-                       dev_err(dev, "failed to register %s\n",
-                               (mt_regulators + i)->desc.name);
-                       return PTR_ERR(rdev);
-               }
-       }
-
-       return 0;
-}
-
-static struct platform_driver mtk_dvfsrc_regulator_driver = {
-       .driver = {
-               .name  = "mtk-dvfsrc-regulator",
-               .probe_type = PROBE_PREFER_ASYNCHRONOUS,
-       },
-       .probe = dvfsrc_vcore_regulator_probe,
-};
-
-static int __init mtk_dvfsrc_regulator_init(void)
-{
-       return platform_driver_register(&mtk_dvfsrc_regulator_driver);
-}
-subsys_initcall(mtk_dvfsrc_regulator_init);
-
-static void __exit mtk_dvfsrc_regulator_exit(void)
-{
-       platform_driver_unregister(&mtk_dvfsrc_regulator_driver);
-}
-module_exit(mtk_dvfsrc_regulator_exit);
-
-MODULE_AUTHOR("Arvin wang <arvin.wang@mediatek.com>");
-MODULE_LICENSE("GPL v2");