Release 4.7 drivers/dma/sh/shdma-of.c
/*
* SHDMA Device Tree glue
*
* Copyright (C) 2013 Renesas Electronics Inc.
* Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*/
#include <linux/dmaengine.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_dma.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/shdma-base.h>
#define to_shdma_chan(c) container_of(c, struct shdma_chan, dma_chan)
static struct dma_chan *shdma_of_xlate(struct of_phandle_args *dma_spec,
struct of_dma *ofdma)
{
u32 id = dma_spec->args[0];
dma_cap_mask_t mask;
struct dma_chan *chan;
if (dma_spec->args_count != 1)
return NULL;
dma_cap_zero(mask);
/* Only slave DMA channels can be allocated via DT */
dma_cap_set(DMA_SLAVE, mask);
chan = dma_request_channel(mask, shdma_chan_filter,
(void *)(uintptr_t)id);
if (chan)
to_shdma_chan(chan)->hw_req = id;
return chan;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guennadi liakhovetski | guennadi liakhovetski | 91 | 96.81% | 1 | 50.00% |
| laurent pinchart | laurent pinchart | 3 | 3.19% | 1 | 50.00% |
| Total | 94 | 100.00% | 2 | 100.00% |
static int shdma_of_probe(struct platform_device *pdev)
{
const struct of_dev_auxdata *lookup = dev_get_platdata(&pdev->dev);
int ret;
ret = of_dma_controller_register(pdev->dev.of_node,
shdma_of_xlate, pdev);
if (ret < 0)
return ret;
ret = of_platform_populate(pdev->dev.of_node, NULL, lookup, &pdev->dev);
if (ret < 0)
of_dma_controller_free(pdev->dev.of_node);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guennadi liakhovetski | guennadi liakhovetski | 86 | 95.56% | 1 | 50.00% |
| jingoo han | jingoo han | 4 | 4.44% | 1 | 50.00% |
| Total | 90 | 100.00% | 2 | 100.00% |
static const struct of_device_id shdma_of_match[] = {
{ .compatible = "renesas,shdma-mux", },
{ }
};
MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
static struct platform_driver shdma_of = {
.driver = {
.name = "shdma-of",
.of_match_table = shdma_of_match,
},
.probe = shdma_of_probe,
};
module_platform_driver(shdma_of);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("SH-DMA driver DT glue");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guennadi liakhovetski | guennadi liakhovetski | 278 | 97.54% | 1 | 33.33% |
| jingoo han | jingoo han | 4 | 1.40% | 1 | 33.33% |
| laurent pinchart | laurent pinchart | 3 | 1.05% | 1 | 33.33% |
| Total | 285 | 100.00% | 3 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.