platform.c (a23e1966932464e1c5226cb9ac4ce1d5fc10ba22) platform.c (2ebc36b9581df31eed271e5de61fc8a8b66dbc56)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Platform driver for the Synopsys DesignWare DMA Controller
4 *
5 * Copyright (C) 2007-2008 Atmel Corporation
6 * Copyright (C) 2010-2011 ST Microelectronics
7 * Copyright (C) 2013 Intel Corporation
8 *

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24#define DRV_NAME "dw_dmac"
25
26static int dw_probe(struct platform_device *pdev)
27{
28 const struct dw_dma_chip_pdata *match;
29 struct dw_dma_chip_pdata *data;
30 struct dw_dma_chip *chip;
31 struct device *dev = &pdev->dev;
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Platform driver for the Synopsys DesignWare DMA Controller
4 *
5 * Copyright (C) 2007-2008 Atmel Corporation
6 * Copyright (C) 2010-2011 ST Microelectronics
7 * Copyright (C) 2013 Intel Corporation
8 *

--- 15 unchanged lines hidden (view full) ---

24#define DRV_NAME "dw_dmac"
25
26static int dw_probe(struct platform_device *pdev)
27{
28 const struct dw_dma_chip_pdata *match;
29 struct dw_dma_chip_pdata *data;
30 struct dw_dma_chip *chip;
31 struct device *dev = &pdev->dev;
32 int err;
32 int ret;
33
34 match = device_get_match_data(dev);
35 if (!match)
36 return -ENODEV;
37
38 data = devm_kmemdup(&pdev->dev, match, sizeof(*match), GFP_KERNEL);
39 if (!data)
40 return -ENOMEM;

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46 chip->irq = platform_get_irq(pdev, 0);
47 if (chip->irq < 0)
48 return chip->irq;
49
50 chip->regs = devm_platform_ioremap_resource(pdev, 0);
51 if (IS_ERR(chip->regs))
52 return PTR_ERR(chip->regs);
53
33
34 match = device_get_match_data(dev);
35 if (!match)
36 return -ENODEV;
37
38 data = devm_kmemdup(&pdev->dev, match, sizeof(*match), GFP_KERNEL);
39 if (!data)
40 return -ENOMEM;

--- 5 unchanged lines hidden (view full) ---

46 chip->irq = platform_get_irq(pdev, 0);
47 if (chip->irq < 0)
48 return chip->irq;
49
50 chip->regs = devm_platform_ioremap_resource(pdev, 0);
51 if (IS_ERR(chip->regs))
52 return PTR_ERR(chip->regs);
53
54 err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
55 if (err)
56 return err;
54 ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
55 if (ret)
56 return ret;
57
58 if (!data->pdata)
59 data->pdata = dev_get_platdata(dev);
60 if (!data->pdata)
61 data->pdata = dw_dma_parse_dt(pdev);
62
63 chip->dev = dev;
64 chip->id = pdev->id;
65 chip->pdata = data->pdata;
66
67 data->chip = chip;
68
69 chip->clk = devm_clk_get_optional(chip->dev, "hclk");
70 if (IS_ERR(chip->clk))
71 return PTR_ERR(chip->clk);
57
58 if (!data->pdata)
59 data->pdata = dev_get_platdata(dev);
60 if (!data->pdata)
61 data->pdata = dw_dma_parse_dt(pdev);
62
63 chip->dev = dev;
64 chip->id = pdev->id;
65 chip->pdata = data->pdata;
66
67 data->chip = chip;
68
69 chip->clk = devm_clk_get_optional(chip->dev, "hclk");
70 if (IS_ERR(chip->clk))
71 return PTR_ERR(chip->clk);
72 err = clk_prepare_enable(chip->clk);
73 if (err)
74 return err;
72 ret = clk_prepare_enable(chip->clk);
73 if (ret)
74 return ret;
75
76 pm_runtime_enable(&pdev->dev);
77
75
76 pm_runtime_enable(&pdev->dev);
77
78 err = data->probe(chip);
79 if (err)
78 ret = data->probe(chip);
79 if (ret)
80 goto err_dw_dma_probe;
81
82 platform_set_drvdata(pdev, data);
83
84 dw_dma_of_controller_register(chip->dw);
85
86 dw_dma_acpi_controller_register(chip->dw);
87
88 return 0;
89
90err_dw_dma_probe:
91 pm_runtime_disable(&pdev->dev);
92 clk_disable_unprepare(chip->clk);
80 goto err_dw_dma_probe;
81
82 platform_set_drvdata(pdev, data);
83
84 dw_dma_of_controller_register(chip->dw);
85
86 dw_dma_acpi_controller_register(chip->dw);
87
88 return 0;
89
90err_dw_dma_probe:
91 pm_runtime_disable(&pdev->dev);
92 clk_disable_unprepare(chip->clk);
93 return err;
93 return ret;
94}
95
96static void dw_remove(struct platform_device *pdev)
97{
98 struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev);
99 struct dw_dma_chip *chip = data->chip;
100 int ret;
101

--- 117 unchanged lines hidden --- 		94}
95
96static void dw_remove(struct platform_device *pdev)
97{
98 struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev);
99 struct dw_dma_chip *chip = data->chip;
100 int ret;
101

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