// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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/*
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*
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* (C) COPYRIGHT 2011-2014, 2016-2017, 2020-2022 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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#include <linux/errno.h>
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#include <linux/export.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/string.h>
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/*
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* This file is included only for type definitions and functions belonging to
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* specific platform folders. Do not add dependencies with symbols that are
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* defined somewhere else.
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*/
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#include <mali_kbase_config.h>
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#ifndef CONFIG_OF
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#define PLATFORM_CONFIG_RESOURCE_COUNT 4
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static struct platform_device *mali_device;
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/**
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* kbasep_config_parse_io_resources - Convert data in struct kbase_io_resources
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* struct to Linux-specific resources
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* @io_resources: Input IO resource data
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* @linux_resources: Pointer to output array of Linux resource structures
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*
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* Function converts data in struct kbase_io_resources struct to an array of Linux resource structures. Note that function
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* assumes that size of linux_resource array is at least PLATFORM_CONFIG_RESOURCE_COUNT.
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* Resources are put in fixed order: I/O memory region, job IRQ, MMU IRQ, GPU IRQ.
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*/
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static void kbasep_config_parse_io_resources(const struct kbase_io_resources *io_resources, struct resource *const linux_resources)
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{
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if (!io_resources || !linux_resources) {
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pr_err("%s: couldn't find proper resources\n", __func__);
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return;
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}
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memset(linux_resources, 0, PLATFORM_CONFIG_RESOURCE_COUNT * sizeof(struct resource));
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linux_resources[0].start = io_resources->io_memory_region.start;
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linux_resources[0].end = io_resources->io_memory_region.end;
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linux_resources[0].flags = IORESOURCE_MEM;
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linux_resources[1].start = io_resources->job_irq_number;
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linux_resources[1].end = io_resources->job_irq_number;
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linux_resources[1].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
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linux_resources[2].start = io_resources->mmu_irq_number;
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linux_resources[2].end = io_resources->mmu_irq_number;
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linux_resources[2].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
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linux_resources[3].start = io_resources->gpu_irq_number;
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linux_resources[3].end = io_resources->gpu_irq_number;
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linux_resources[3].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
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}
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int kbase_platform_register(void)
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{
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struct kbase_platform_config *config;
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struct resource resources[PLATFORM_CONFIG_RESOURCE_COUNT];
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int err;
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config = kbase_get_platform_config(); /* declared in midgard/mali_kbase_config.h but defined in platform folder */
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if (config == NULL) {
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pr_err("%s: couldn't get platform config\n", __func__);
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return -ENODEV;
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}
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mali_device = platform_device_alloc("mali", 0);
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if (mali_device == NULL)
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return -ENOMEM;
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kbasep_config_parse_io_resources(config->io_resources, resources);
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err = platform_device_add_resources(mali_device, resources, PLATFORM_CONFIG_RESOURCE_COUNT);
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if (err) {
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platform_device_put(mali_device);
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mali_device = NULL;
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return err;
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}
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err = platform_device_add(mali_device);
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if (err) {
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platform_device_unregister(mali_device);
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mali_device = NULL;
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return err;
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}
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return 0;
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}
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EXPORT_SYMBOL(kbase_platform_register);
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void kbase_platform_unregister(void)
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{
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if (mali_device)
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platform_device_unregister(mali_device);
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}
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EXPORT_SYMBOL(kbase_platform_unregister);
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#endif /* CONFIG_OF */
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