mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 12:16:39 +07:00
8d7cf8370d
The patch makes necessary changes on gpio-mxs as below to turn it into an upstanding gpio driver. * Clean up the gpio port definition stuff * Use readl/writel to replace mach-specific accessors __raw_readl/__raw_writel * Change mxs_gpio_init into mxs_gpio_probe function And it then migrates mach-mxs to the updated driver by adding corresponding platform devices. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/*
|
|
* Copyright 2008 Sascha Hauer, kernel@pengutronix.de
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/amba/bus.h>
|
|
|
|
struct platform_device *__init mxs_add_platform_device_dmamask(
|
|
const char *name, int id,
|
|
const struct resource *res, unsigned int num_resources,
|
|
const void *data, size_t size_data, u64 dmamask)
|
|
{
|
|
int ret = -ENOMEM;
|
|
struct platform_device *pdev;
|
|
|
|
pdev = platform_device_alloc(name, id);
|
|
if (!pdev)
|
|
goto err;
|
|
|
|
if (dmamask) {
|
|
/*
|
|
* This memory isn't freed when the device is put,
|
|
* I don't have a nice idea for that though. Conceptually
|
|
* dma_mask in struct device should not be a pointer.
|
|
* See http://thread.gmane.org/gmane.linux.kernel.pci/9081
|
|
*/
|
|
pdev->dev.dma_mask =
|
|
kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
|
|
if (!pdev->dev.dma_mask)
|
|
/* ret is still -ENOMEM; */
|
|
goto err;
|
|
|
|
*pdev->dev.dma_mask = dmamask;
|
|
pdev->dev.coherent_dma_mask = dmamask;
|
|
}
|
|
|
|
if (res) {
|
|
ret = platform_device_add_resources(pdev, res, num_resources);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
if (data) {
|
|
ret = platform_device_add_data(pdev, data, size_data);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
ret = platform_device_add(pdev);
|
|
if (ret) {
|
|
err:
|
|
if (dmamask)
|
|
kfree(pdev->dev.dma_mask);
|
|
platform_device_put(pdev);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return pdev;
|
|
}
|
|
|
|
int __init mxs_add_amba_device(const struct amba_device *dev)
|
|
{
|
|
struct amba_device *adev = kmalloc(sizeof(*adev), GFP_KERNEL);
|
|
|
|
if (!adev) {
|
|
pr_err("%s: failed to allocate memory", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*adev = *dev;
|
|
|
|
return amba_device_register(adev, &iomem_resource);
|
|
}
|
|
|
|
struct device mxs_apbh_bus = {
|
|
.init_name = "mxs_apbh",
|
|
.parent = &platform_bus,
|
|
};
|
|
|
|
static int __init mxs_device_init(void)
|
|
{
|
|
return device_register(&mxs_apbh_bus);
|
|
}
|
|
core_initcall(mxs_device_init);
|