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164 lines
4.1 KiB
164 lines
4.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2014 Free Electrons |
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* |
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* Author: Boris BREZILLON <[email protected]> |
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* |
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* Allwinner PRCM (Power/Reset/Clock Management) driver |
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*/ |
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#include <linux/mfd/core.h> |
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#include <linux/init.h> |
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#include <linux/of.h> |
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#define SUN8I_CODEC_ANALOG_BASE 0x1c0 |
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#define SUN8I_CODEC_ANALOG_SIZE 0x4 |
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struct prcm_data { |
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int nsubdevs; |
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const struct mfd_cell *subdevs; |
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}; |
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static const struct resource sun6i_a31_ar100_clk_res[] = { |
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DEFINE_RES_MEM(0x0, 4) |
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}; |
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static const struct resource sun6i_a31_apb0_clk_res[] = { |
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DEFINE_RES_MEM(0xc, 4) |
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}; |
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static const struct resource sun6i_a31_apb0_gates_clk_res[] = { |
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DEFINE_RES_MEM(0x28, 4) |
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}; |
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static const struct resource sun6i_a31_ir_clk_res[] = { |
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DEFINE_RES_MEM(0x54, 4) |
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}; |
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static const struct resource sun6i_a31_apb0_rstc_res[] = { |
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DEFINE_RES_MEM(0xb0, 4) |
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}; |
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static const struct resource sun8i_codec_analog_res[] = { |
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DEFINE_RES_MEM(SUN8I_CODEC_ANALOG_BASE, SUN8I_CODEC_ANALOG_SIZE), |
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}; |
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static const struct mfd_cell sun6i_a31_prcm_subdevs[] = { |
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{ |
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.name = "sun6i-a31-ar100-clk", |
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.of_compatible = "allwinner,sun6i-a31-ar100-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_ar100_clk_res), |
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.resources = sun6i_a31_ar100_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-apb0-clk", |
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.of_compatible = "allwinner,sun6i-a31-apb0-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res), |
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.resources = sun6i_a31_apb0_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-apb0-gates-clk", |
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.of_compatible = "allwinner,sun6i-a31-apb0-gates-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res), |
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.resources = sun6i_a31_apb0_gates_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-ir-clk", |
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.of_compatible = "allwinner,sun4i-a10-mod0-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_ir_clk_res), |
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.resources = sun6i_a31_ir_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-apb0-clock-reset", |
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.of_compatible = "allwinner,sun6i-a31-clock-reset", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res), |
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.resources = sun6i_a31_apb0_rstc_res, |
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}, |
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}; |
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static const struct mfd_cell sun8i_a23_prcm_subdevs[] = { |
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{ |
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.name = "sun8i-a23-apb0-clk", |
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.of_compatible = "allwinner,sun8i-a23-apb0-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res), |
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.resources = sun6i_a31_apb0_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-apb0-gates-clk", |
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.of_compatible = "allwinner,sun8i-a23-apb0-gates-clk", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res), |
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.resources = sun6i_a31_apb0_gates_clk_res, |
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}, |
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{ |
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.name = "sun6i-a31-apb0-clock-reset", |
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.of_compatible = "allwinner,sun6i-a31-clock-reset", |
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.num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res), |
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.resources = sun6i_a31_apb0_rstc_res, |
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}, |
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{ |
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.name = "sun8i-codec-analog", |
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.of_compatible = "allwinner,sun8i-a23-codec-analog", |
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.num_resources = ARRAY_SIZE(sun8i_codec_analog_res), |
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.resources = sun8i_codec_analog_res, |
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}, |
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}; |
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static const struct prcm_data sun6i_a31_prcm_data = { |
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.nsubdevs = ARRAY_SIZE(sun6i_a31_prcm_subdevs), |
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.subdevs = sun6i_a31_prcm_subdevs, |
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}; |
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static const struct prcm_data sun8i_a23_prcm_data = { |
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.nsubdevs = ARRAY_SIZE(sun8i_a23_prcm_subdevs), |
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.subdevs = sun8i_a23_prcm_subdevs, |
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}; |
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static const struct of_device_id sun6i_prcm_dt_ids[] = { |
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{ |
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.compatible = "allwinner,sun6i-a31-prcm", |
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.data = &sun6i_a31_prcm_data, |
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}, |
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{ |
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.compatible = "allwinner,sun8i-a23-prcm", |
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.data = &sun8i_a23_prcm_data, |
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}, |
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{ /* sentinel */ }, |
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}; |
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static int sun6i_prcm_probe(struct platform_device *pdev) |
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{ |
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const struct of_device_id *match; |
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const struct prcm_data *data; |
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struct resource *res; |
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int ret; |
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match = of_match_node(sun6i_prcm_dt_ids, pdev->dev.of_node); |
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if (!match) |
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return -EINVAL; |
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data = match->data; |
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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if (!res) { |
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dev_err(&pdev->dev, "no prcm memory region provided\n"); |
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return -ENOENT; |
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} |
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ret = mfd_add_devices(&pdev->dev, 0, data->subdevs, data->nsubdevs, |
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res, -1, NULL); |
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if (ret) { |
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dev_err(&pdev->dev, "failed to add subdevices\n"); |
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return ret; |
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} |
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return 0; |
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} |
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static struct platform_driver sun6i_prcm_driver = { |
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.driver = { |
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.name = "sun6i-prcm", |
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.of_match_table = sun6i_prcm_dt_ids, |
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}, |
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.probe = sun6i_prcm_probe, |
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}; |
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builtin_platform_driver(sun6i_prcm_driver);
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