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Release 4.14 drivers/mmc/host/sdhci-pltfm.c

Directory: drivers/mmc/host
/*
 * sdhci-pltfm.c Support for SDHCI platform devices
 * Copyright (c) 2009 Intel Corporation
 *
 * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc.
 * Copyright (c) 2009 MontaVista Software, Inc.
 *
 * Authors: Xiaobo Xie <X.Xie@freescale.com>
 *          Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* Supports:
 * SDHCI platform devices
 *
 * Inspired by sdhci-pci.c, by Pierre Ossman
 */

#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#ifdef CONFIG_PPC
#include <asm/machdep.h>
#endif
#include "sdhci-pltfm.h"


unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); return clk_get_rate(pltfm_host->clk); }

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PersonTokensPropCommitsCommitProp
Lars-Peter Clausen29100.00%1100.00%
Total29100.00%1100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock); static const struct sdhci_ops sdhci_pltfm_ops = { .set_clock = sdhci_set_clock, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, }; #ifdef CONFIG_OF
static bool sdhci_of_wp_inverted(struct device_node *np) { if (of_get_property(np, "sdhci,wp-inverted", NULL) || of_get_property(np, "wp-inverted", NULL)) return true; /* Old device trees don't have the wp-inverted property. */ #ifdef CONFIG_PPC return machine_is(mpc837x_rdb) || machine_is(mpc837x_mds); #else return false; #endif /* CONFIG_PPC */ }

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PersonTokensPropCommitsCommitProp
Shawn Guo4884.21%150.00%
Arnd Bergmann915.79%150.00%
Total57100.00%2100.00%


void sdhci_get_of_property(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); u32 bus_width; if (of_get_property(np, "sdhci,auto-cmd12", NULL)) host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; if (of_get_property(np, "sdhci,1-bit-only", NULL) || (of_property_read_u32(np, "bus-width", &bus_width) == 0 && bus_width == 1)) host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; if (sdhci_of_wp_inverted(np)) host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT; if (of_get_property(np, "broken-cd", NULL)) host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; if (of_get_property(np, "no-1-8-v", NULL)) host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) host->quirks |= SDHCI_QUIRK_BROKEN_DMA; if (of_device_is_compatible(np, "fsl,p2020-esdhc") || of_device_is_compatible(np, "fsl,p1010-esdhc") || of_device_is_compatible(np, "fsl,t4240-esdhc") || of_device_is_compatible(np, "fsl,mpc8536-esdhc")) host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; of_property_read_u32(np, "clock-frequency", &pltfm_host->clock); if (of_find_property(np, "keep-power-in-suspend", NULL)) host->mmc->pm_caps |= MMC_PM_KEEP_POWER; if (of_property_read_bool(np, "wakeup-source") || of_property_read_bool(np, "enable-sdio-wakeup")) /* legacy */ host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; }

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PersonTokensPropCommitsCommitProp
Shawn Guo9939.60%110.00%
Jerry Huang4417.60%220.00%
Abhilash Kesavan3514.00%110.00%
Arnd Bergmann218.40%110.00%
Daniel Drake176.80%110.00%
Chris Ball176.80%110.00%
Sudeep Holla93.60%110.00%
Chunhe Lan72.80%110.00%
Tobias Klauser10.40%110.00%
Total250100.00%10100.00%

#else
void sdhci_get_of_property(struct platform_device *pdev) {}

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PersonTokensPropCommitsCommitProp
Shawn Guo9100.00%1100.00%
Total9100.00%1100.00%

#endif /* CONFIG_OF */ EXPORT_SYMBOL_GPL(sdhci_get_of_property);
struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, const struct sdhci_pltfm_data *pdata, size_t priv_size) { struct sdhci_host *host; struct resource *iomem; void __iomem *ioaddr; int irq, ret; iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); ioaddr = devm_ioremap_resource(&pdev->dev, iomem); if (IS_ERR(ioaddr)) { ret = PTR_ERR(ioaddr); goto err; } irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "failed to get IRQ number\n"); ret = irq; goto err; } host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pltfm_host) + priv_size); if (IS_ERR(host)) { ret = PTR_ERR(host); goto err; } host->ioaddr = ioaddr; host->irq = irq; host->hw_name = dev_name(&pdev->dev); if (pdata && pdata->ops) host->ops = pdata->ops; else host->ops = &sdhci_pltfm_ops; if (pdata) { host->quirks = pdata->quirks; host->quirks2 = pdata->quirks2; } platform_set_drvdata(pdev, host); return host; err: dev_err(&pdev->dev, "%s failed %d\n", __func__, ret); return ERR_PTR(ret); }

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PersonTokensPropCommitsCommitProp
Richard Röjfors10039.06%19.09%
Masahiro Yamada7328.52%218.18%
Anton Vorontsov3312.89%218.18%
Shawn Guo2710.55%19.09%
Al Cooper83.12%19.09%
Christian Daudt72.73%19.09%
Wolfram Sang72.73%218.18%
Lars-Peter Clausen10.39%19.09%
Total256100.00%11100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_init);
void sdhci_pltfm_free(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); sdhci_free_host(host); }

Contributors

PersonTokensPropCommitsCommitProp
Richard Röjfors2392.00%150.00%
Shawn Guo28.00%150.00%
Total25100.00%2100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_free);
int sdhci_pltfm_register(struct platform_device *pdev, const struct sdhci_pltfm_data *pdata, size_t priv_size) { struct sdhci_host *host; int ret = 0; host = sdhci_pltfm_init(pdev, pdata, priv_size); if (IS_ERR(host)) return PTR_ERR(host); sdhci_get_of_property(pdev); ret = sdhci_add_host(host); if (ret) sdhci_pltfm_free(pdev); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Shawn Guo6888.31%233.33%
Christian Daudt56.49%116.67%
Mike Rapoport22.60%116.67%
Lars-Peter Clausen11.30%116.67%
Anton Vorontsov11.30%116.67%
Total77100.00%6100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_register);
int sdhci_pltfm_unregister(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); clk_disable_unprepare(pltfm_host->clk); sdhci_pltfm_free(pdev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shawn Guo4363.24%125.00%
Kevin Hao1725.00%125.00%
Anton Vorontsov57.35%125.00%
Olof Johansson34.41%125.00%
Total68100.00%4100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_unregister); #ifdef CONFIG_PM_SLEEP
int sdhci_pltfm_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); int ret; if (host->tuning_mode != SDHCI_TUNING_MODE_3) mmc_retune_needed(host->mmc); ret = sdhci_suspend_host(host); if (ret) return ret; clk_disable_unprepare(pltfm_host->clk); return 0; }

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PersonTokensPropCommitsCommitProp
Masahiro Yamada3244.44%125.00%
Giuseppe Cavallaro2331.94%125.00%
Adrian Hunter1520.83%125.00%
Manuel Lauss22.78%125.00%
Total72100.00%4100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_suspend);
int sdhci_pltfm_resume(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); int ret; ret = clk_prepare_enable(pltfm_host->clk); if (ret) return ret; ret = sdhci_resume_host(host); if (ret) clk_disable_unprepare(pltfm_host->clk); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Masahiro Yamada4462.86%133.33%
Giuseppe Cavallaro2434.29%133.33%
Manuel Lauss22.86%133.33%
Total70100.00%3100.00%

EXPORT_SYMBOL_GPL(sdhci_pltfm_resume); #endif const struct dev_pm_ops sdhci_pltfm_pmops = { SET_SYSTEM_SLEEP_PM_OPS(sdhci_pltfm_suspend, sdhci_pltfm_resume) }; EXPORT_SYMBOL_GPL(sdhci_pltfm_pmops);
static int __init sdhci_pltfm_drv_init(void) { pr_info("sdhci-pltfm: SDHCI platform and OF driver helper\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shawn Guo17100.00%1100.00%
Total17100.00%1100.00%

module_init(sdhci_pltfm_drv_init);
static void __exit sdhci_pltfm_drv_exit(void) { }

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PersonTokensPropCommitsCommitProp
Shawn Guo8100.00%1100.00%
Total8100.00%1100.00%

module_exit(sdhci_pltfm_drv_exit); MODULE_DESCRIPTION("SDHCI platform and OF driver helper"); MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL v2");

Overall Contributors

PersonTokensPropCommitsCommitProp
Shawn Guo39536.41%37.89%
Masahiro Yamada15914.65%410.53%
Richard Röjfors13212.17%12.63%
Giuseppe Cavallaro494.52%12.63%
Jerry Huang454.15%25.26%
Anton Vorontsov423.87%25.26%
Lars-Peter Clausen373.41%37.89%
Abhilash Kesavan353.23%12.63%
Arnd Bergmann302.76%12.63%
Russell King211.94%410.53%
Kevin Hao171.57%12.63%
Chris Ball171.57%12.63%
Daniel Drake171.57%12.63%
Adrian Hunter151.38%12.63%
Manuel Lauss121.11%12.63%
Christian Daudt121.11%12.63%
Ulf Hansson100.92%12.63%
Sudeep Holla90.83%12.63%
Al Cooper80.74%12.63%
Chunhe Lan70.65%12.63%
Wolfram Sang70.65%25.26%
Paul Gortmaker30.28%12.63%
Olof Johansson30.28%12.63%
Mike Rapoport20.18%12.63%
Tobias Klauser10.09%12.63%
Total1085100.00%38100.00%
Directory: drivers/mmc/host
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