Release 4.12 drivers/mtd/nand/denali_dt.c

/*
 * NAND Flash Controller Device Driver for DT
 *
 * Copyright © 2011, Picochip.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 */
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>

#include "denali.h"


struct denali_dt {
	
struct denali_nand_info	denali;
	
struct clk		*clk;
};


struct denali_dt_data {
	
unsigned int revision;
	
unsigned int caps;
};


static const struct denali_dt_data denali_socfpga_data = {
	.caps = DENALI_CAP_HW_ECC_FIXUP,
};


static const struct of_device_id denali_nand_dt_ids[] = {
	{
		.compatible = "altr,socfpga-denali-nand",
		.data = &denali_socfpga_data,
        },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, denali_nand_dt_ids);



static int denali_dt_probe(struct platform_device *pdev)
{
	struct resource *denali_reg, *nand_data;
	struct denali_dt *dt;
	const struct denali_dt_data *data;
	struct denali_nand_info *denali;
	int ret;

	dt = devm_kzalloc(&pdev->dev, sizeof(*dt), GFP_KERNEL);
	if (!dt)
		return -ENOMEM;
	denali = &dt->denali;

	data = of_device_get_match_data(&pdev->dev);
	if (data) {
		denali->revision = data->revision;
		denali->caps = data->caps;
	}

	denali->platform = DT;
	denali->dev = &pdev->dev;
	denali->irq = platform_get_irq(pdev, 0);
	if (denali->irq < 0) {
		dev_err(&pdev->dev, "no irq defined\n");
		return denali->irq;
	}

	denali_reg = platform_get_resource_byname(pdev, IORESOURCE_MEM,
						  "denali_reg");
	denali->flash_reg = devm_ioremap_resource(&pdev->dev, denali_reg);
	if (IS_ERR(denali->flash_reg))
		return PTR_ERR(denali->flash_reg);

	nand_data = platform_get_resource_byname(pdev, IORESOURCE_MEM,
						 "nand_data");
	denali->flash_mem = devm_ioremap_resource(&pdev->dev, nand_data);
	if (IS_ERR(denali->flash_mem))
		return PTR_ERR(denali->flash_mem);

	dt->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(dt->clk)) {
		dev_err(&pdev->dev, "no clk available\n");
		return PTR_ERR(dt->clk);
	}
	clk_prepare_enable(dt->clk);

	ret = denali_init(denali);
	if (ret)
		goto out_disable_clk;

	platform_set_drvdata(pdev, dt);
	return 0;

out_disable_clk:
	clk_disable_unprepare(dt->clk);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dinh Nguyen
231
71.08%
1
14.29%
Masahiro Yamada
50
15.38%
3
42.86%
Jingoo Han
41
12.62%
2
28.57%
Sachin Kamat
3
0.92%
1
14.29%
Total
325
100.00%
7
100.00%



static int denali_dt_remove(struct platform_device *pdev)
{
	struct denali_dt *dt = platform_get_drvdata(pdev);

	denali_remove(&dt->denali);
	clk_disable_unprepare(dt->clk);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dinh Nguyen
36
92.31%
1
33.33%
Masahiro Yamada
3
7.69%
2
66.67%
Total
39
100.00%
3
100.00%


static struct platform_driver denali_dt_driver = {
	.probe		= denali_dt_probe,
	.remove		= denali_dt_remove,
	.driver		= {
		.name	= "denali-nand-dt",
		.of_match_table	= denali_nand_dt_ids,
        },
};


module_platform_driver(denali_dt_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jamie Iles");
MODULE_DESCRIPTION("DT driver for Denali NAND controller");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Dinh Nguyen
388
74.62%
1
10.00%
Masahiro Yamada
87
16.73%
5
50.00%
Jingoo Han
41
7.88%
2
20.00%
Sachin Kamat
4
0.77%
2
20.00%
Total
520
100.00%
10
100.00%
Directory: drivers/mtd/nand

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