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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* sdhci-brcmstb.c Support for SDHCI on Broadcom BRCMSTB SoC's
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*
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* Copyright (C) 2015 Broadcom Corporation
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*/
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#include <linux/io.h>
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#include <linux/mmc/host.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include "sdhci-pltfm.h"
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static const struct sdhci_ops sdhci_brcmstb_ops = {
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.set_clock = sdhci_set_clock,
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.set_bus_width = sdhci_set_bus_width,
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.reset = sdhci_reset,
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.set_uhs_signaling = sdhci_set_uhs_signaling,
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};
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static const struct sdhci_pltfm_data sdhci_brcmstb_pdata = {
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.ops = &sdhci_brcmstb_ops,
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};
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static int sdhci_brcmstb_probe(struct platform_device *pdev)
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{
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struct sdhci_host *host;
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struct sdhci_pltfm_host *pltfm_host;
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struct clk *clk;
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int res;
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clk = devm_clk_get(&pdev->dev, NULL);
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if (IS_ERR(clk)) {
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dev_err(&pdev->dev, "Clock not found in Device Tree\n");
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clk = NULL;
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}
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res = clk_prepare_enable(clk);
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if (res)
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return res;
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host = sdhci_pltfm_init(pdev, &sdhci_brcmstb_pdata, 0);
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if (IS_ERR(host)) {
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res = PTR_ERR(host);
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goto err_clk;
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}
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sdhci_get_of_property(pdev);
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res = mmc_of_parse(host->mmc);
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if (res)
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goto err;
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/*
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* Supply the existing CAPS, but clear the UHS modes. This
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* will allow these modes to be specified by device tree
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* properties through mmc_of_parse().
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*/
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host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
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if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm7425-sdhci"))
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host->caps &= ~SDHCI_CAN_64BIT;
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host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
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host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |
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SDHCI_SUPPORT_DDR50);
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host->quirks |= SDHCI_QUIRK_MISSING_CAPS |
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SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
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res = sdhci_add_host(host);
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if (res)
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goto err;
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pltfm_host = sdhci_priv(host);
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pltfm_host->clk = clk;
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return res;
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err:
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sdhci_pltfm_free(pdev);
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err_clk:
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clk_disable_unprepare(clk);
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return res;
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}
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static const struct of_device_id sdhci_brcm_of_match[] = {
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{ .compatible = "brcm,bcm7425-sdhci" },
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{ .compatible = "brcm,bcm7445-sdhci" },
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{},
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};
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MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
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static struct platform_driver sdhci_brcmstb_driver = {
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.driver = {
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.name = "sdhci-brcmstb",
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.pm = &sdhci_pltfm_pmops,
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.of_match_table = of_match_ptr(sdhci_brcm_of_match),
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},
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.probe = sdhci_brcmstb_probe,
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.remove = sdhci_pltfm_unregister,
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};
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module_platform_driver(sdhci_brcmstb_driver);
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MODULE_DESCRIPTION("SDHCI driver for Broadcom BRCMSTB SoCs");
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MODULE_AUTHOR("Broadcom");
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MODULE_LICENSE("GPL v2");
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