mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
d2a47176a8
The MMC_CAP2_HC_ERASE_SZ is used only by a few mmc host drivers. Its intent is to enable eMMC's high-capacity erase size, as to improve the behaviour of the erase operations. We should strive to avoid software configuration options that aren't necessary, but instead deploy common behaviours. For these reasons, let's remove the capability bit for MMC_CAP2_HC_ERASE_SZ and make it the default behaviour. Note that this change doesn't affect eMMCs supporting trim/discard, because these commands operates on sectors and takes precedence over erase commands. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Tested-by: Shawn Lin <shawn.lin@rock-chips.com>
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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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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#ifdef CONFIG_PM_SLEEP
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static int sdhci_brcmstb_suspend(struct device *dev)
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{
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struct sdhci_host *host = dev_get_drvdata(dev);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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int res;
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if (host->tuning_mode != SDHCI_TUNING_MODE_3)
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mmc_retune_needed(host->mmc);
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res = sdhci_suspend_host(host);
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if (res)
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return res;
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clk_disable_unprepare(pltfm_host->clk);
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return res;
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}
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static int sdhci_brcmstb_resume(struct device *dev)
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{
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struct sdhci_host *host = dev_get_drvdata(dev);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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int err;
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err = clk_prepare_enable(pltfm_host->clk);
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if (err)
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return err;
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return sdhci_resume_host(host);
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}
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#endif /* CONFIG_PM_SLEEP */
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static SIMPLE_DEV_PM_OPS(sdhci_brcmstb_pmops, sdhci_brcmstb_suspend,
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sdhci_brcmstb_resume);
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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 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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mmc_of_parse(host->mmc);
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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_brcmstb_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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