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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2011-2014, 2016-2017, 2020-2021 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/string.h>
/*
* This file is included only for type definitions and functions belonging to
* specific platform folders. Do not add dependencies with symbols that are
* defined somewhere else.
*/
#include <mali_kbase_config.h>
#define PLATFORM_CONFIG_RESOURCE_COUNT 4
#define PLATFORM_CONFIG_IRQ_RES_COUNT 3
static struct platform_device *mali_device;
#ifndef CONFIG_OF
/**
* Convert data in struct kbase_io_resources struct to Linux-specific resources
* @io_resources: Input IO resource data
* @linux_resources: Pointer to output array of Linux resource structures
*
* Function converts data in struct kbase_io_resources struct to an array of Linux resource structures. Note that function
* assumes that size of linux_resource array is at least PLATFORM_CONFIG_RESOURCE_COUNT.
* Resources are put in fixed order: I/O memory region, job IRQ, MMU IRQ, GPU IRQ.
*/
static void kbasep_config_parse_io_resources(const struct kbase_io_resources *io_resources, struct resource *const linux_resources)
{
if (!io_resources || !linux_resources) {
pr_err("%s: couldn't find proper resources\n", __func__);
return;
}
memset(linux_resources, 0, PLATFORM_CONFIG_RESOURCE_COUNT * sizeof(struct resource));
linux_resources[0].start = io_resources->io_memory_region.start;
linux_resources[0].end = io_resources->io_memory_region.end;
linux_resources[0].flags = IORESOURCE_MEM;
linux_resources[1].start = io_resources->job_irq_number;
linux_resources[1].end = io_resources->job_irq_number;
linux_resources[1].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
linux_resources[2].start = io_resources->mmu_irq_number;
linux_resources[2].end = io_resources->mmu_irq_number;
linux_resources[2].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
linux_resources[3].start = io_resources->gpu_irq_number;
linux_resources[3].end = io_resources->gpu_irq_number;
linux_resources[3].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
}
#endif /* CONFIG_OF */
int kbase_platform_register(void)
{
struct kbase_platform_config *config;
#ifndef CONFIG_OF
struct resource resources[PLATFORM_CONFIG_RESOURCE_COUNT];
#endif
int err;
config = kbase_get_platform_config(); /* declared in midgard/mali_kbase_config.h but defined in platform folder */
if (config == NULL) {
pr_err("%s: couldn't get platform config\n", __func__);
return -ENODEV;
}
mali_device = platform_device_alloc("mali", 0);
if (mali_device == NULL)
return -ENOMEM;
#ifndef CONFIG_OF
kbasep_config_parse_io_resources(config->io_resources, resources);
err = platform_device_add_resources(mali_device, resources, PLATFORM_CONFIG_RESOURCE_COUNT);
if (err) {
platform_device_put(mali_device);
mali_device = NULL;
return err;
}
#endif /* CONFIG_OF */
err = platform_device_add(mali_device);
if (err) {
platform_device_unregister(mali_device);
mali_device = NULL;
return err;
}
return 0;
}
EXPORT_SYMBOL(kbase_platform_register);
void kbase_platform_unregister(void)
{
if (mali_device)
platform_device_unregister(mali_device);
}
EXPORT_SYMBOL(kbase_platform_unregister);
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