nvpmodel: Remove legacy nvpmodel-emc-cap driver

The driver has been switched to nvpmodel-clk-cap so remove legacy
nvpmodel-emc-cap.

Bug 3997304

Signed-off-by: Yi-Wei Wang <yiweiw@nvidia.com>
Change-Id: Ic11c29b8cb360b8d591ed94db74ba3f12663f068
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2921042
Reviewed-by: Johnny Liu <johnliu@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

drivers/nvpmodel/nvpmodel-emc-cap.c

@@ -1,176 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-// Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
-
-#include <linux/of.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/kobject.h>
-#include <linux/module.h>
-
-#include <linux/platform/tegra/mc_utils.h>
-#include <linux/interconnect.h>
-#include <dt-bindings/interconnect/tegra_icc_id.h>
-
-/* TBD: Use the implementation from mc_utils */
-#define BYTES_PER_CLK_PER_CH    4
-#define CH_16                   16
-#define CH_16_BYTES_PER_CLK     (BYTES_PER_CLK_PER_CH * CH_16)
-unsigned long emc_freq_to_bw(unsigned long freq)
-{
-	return freq * CH_16_BYTES_PER_CLK;
-}
-
-struct nvpmodel_emc_cap {
-	struct device *dev;
-	struct kobject *kobj;
-	struct icc_path *icc_path_handle;
-	struct kobj_attribute attr;
-	unsigned long emc_iso_cap;
-};
-
-static ssize_t emc_iso_cap_show(struct kobject *kobj,
-				struct kobj_attribute *attr, char *buf)
-{
-	struct nvpmodel_emc_cap *data;
-
-	data = container_of(attr, struct nvpmodel_emc_cap, attr);
-	return sprintf(buf, "%lu\n", data->emc_iso_cap);
-}
-
-static ssize_t emc_iso_cap_store(struct kobject *kobj,
-				struct kobj_attribute *attr, const char *buf,
-				size_t count)
-{
-	struct nvpmodel_emc_cap *data;
-	int err = 0;
-
-	data = container_of(attr, struct nvpmodel_emc_cap, attr);
-	if (sscanf(buf, "%lu", &data->emc_iso_cap) != 1)
-		return -EINVAL;
-
-	if (data->icc_path_handle != NULL) {
-		err = icc_set_bw(data->icc_path_handle, 0,
-				(u32) emc_freq_to_bw(data->emc_iso_cap/1000));
-		if (err) {
-			dev_err(data->dev,
-				"%s: Failed to set emc cap with icc, err=%d\n",
-				__func__, err);
-			return err;
-		}
-	}
-
-	return count;
-}
-
-static int nvpmodel_emc_cap_probe(struct platform_device *pdev)
-{
-	struct kobject *kobj;
-	struct kobj_attribute *attr;
-	struct nvpmodel_emc_cap *data;
-	struct icc_path *icc_path_handle;
-	int err;
-
-	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	kobj = kobject_create_and_add("nvpmodel_emc_cap", kernel_kobj);
-	if (!kobj) {
-		dev_err(&pdev->dev,
-			"%s: Failed to create nvpmodel_emc_cap kobject\n",
-			__func__);
-		err = -ENOMEM;
-		goto out;
-	}
-
-	icc_path_handle = icc_get(NULL,
-			TEGRA_ICC_NVPMODEL,
-			TEGRA_ICC_PRIMARY);
-	if (IS_ERR_OR_NULL(icc_path_handle)) {
-		err = IS_ERR(icc_path_handle) ?
-			PTR_ERR(icc_path_handle) :
-			-ENODEV;
-		dev_err(&pdev->dev,
-			"%s: Failed to get icc path for nvpmodel client\n",
-			__func__);
-		goto icc_err;
-	}
-
-	data->dev = &pdev->dev;
-	data->kobj = kobj;
-	data->icc_path_handle = icc_path_handle;
-
-	attr = &data->attr;
-	attr->attr.name = "emc_iso_cap";
-	attr->attr.mode = 0644;
-	attr->show = emc_iso_cap_show;
-	attr->store = emc_iso_cap_store;
-	sysfs_attr_init(&attr->attr);
-	if (sysfs_create_file(data->kobj, &attr->attr)) {
-		dev_err(&pdev->dev,
-			"%s: Failed to create emc_iso_cap sysfs node\n",
-			__func__);
-		err = -ENOMEM;
-		goto sys_err;
-	}
-
-	return 0;
-
-sys_err:
-	if (data && data->icc_path_handle) {
-		icc_put(data->icc_path_handle);
-		data->icc_path_handle = NULL;
-	}
-icc_err:
-	if (data && data->kobj) {
-		kobject_put(data->kobj);
-		data->kobj = NULL;
-	}
-out:
-	return err;
-}
-
-static int nvpmodel_emc_cap_remove(struct platform_device *pdev)
-{
-	struct nvpmodel_emc_cap *data = platform_get_drvdata(pdev);
-
-	if (data && data->icc_path_handle) {
-		icc_put(data->icc_path_handle);
-		data->icc_path_handle = NULL;
-	}
-
-	if (data && data->kobj) {
-		sysfs_remove_file(data->kobj, &data->attr.attr);
-		kobject_put(data->kobj);
-		data->kobj = NULL;
-	}
-
-	return 0;
-}
-
-static const struct of_device_id nvpmodel_emc_cap_of_match[] = {
-	{ .compatible = "nvidia,nvpmodel-emc-cap", },
-	{ },
-};
-
-MODULE_DEVICE_TABLE(of, nvpmodel_emc_cap_of_match);
-
-static struct platform_driver nvpmodel_emc_cap_driver = {
-	.driver = {
-		.name = "nvpmodel-emc-cap",
-		.owner = THIS_MODULE,
-		.of_match_table = nvpmodel_emc_cap_of_match,
-	},
-	.probe = nvpmodel_emc_cap_probe,
-	.remove = nvpmodel_emc_cap_remove,
-};
-
-module_platform_driver(nvpmodel_emc_cap_driver);
-
-MODULE_AUTHOR("Johnny Liu <johnliu@nvidia.com>");
-MODULE_DESCRIPTION("NVIDIA nvpmodel driver for emc clock cap");
-MODULE_LICENSE("GPL v2");