// SPDX-License-Identifier: GPL-2.0-only /* * Driver for Marvell Xenon SDHC as a platform device * * Copyright (C) 2016 Marvell, All Rights Reserved. * * Author: Hu Ziji <[email protected]> * Date: 2016-8-24 * * Inspired by Jisheng Zhang <[email protected]> * Special thanks to Video BG4 project team. */ #include <linux/acpi.h> #include <linux/delay.h> #include <linux/ktime.h> #include <linux/module.h> #include <linux/of.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/mm.h> #include <linux/dma-mapping.h> #include "sdhci-pltfm.h" #include "sdhci-xenon.h" static int xenon_enable_internal_clk(struct sdhci_host *host) { … } /* Set SDCLK-off-while-idle */ static void xenon_set_sdclk_off_idle(struct sdhci_host *host, unsigned char sdhc_id, bool enable) { … } /* Enable/Disable the Auto Clock Gating function */ static void xenon_set_acg(struct sdhci_host *host, bool enable) { … } /* Enable this SDHC */ static void xenon_enable_sdhc(struct sdhci_host *host, unsigned char sdhc_id) { … } /* Disable this SDHC */ static void xenon_disable_sdhc(struct sdhci_host *host, unsigned char sdhc_id) { … } /* Enable Parallel Transfer Mode */ static void xenon_enable_sdhc_parallel_tran(struct sdhci_host *host, unsigned char sdhc_id) { … } /* Mask command conflict error */ static void xenon_mask_cmd_conflict_err(struct sdhci_host *host) { … } static void xenon_retune_setup(struct sdhci_host *host) { … } /* * Operations inside struct sdhci_ops */ /* Recover the Register Setting cleared during SOFTWARE_RESET_ALL */ static void xenon_reset_exit(struct sdhci_host *host, unsigned char sdhc_id, u8 mask) { … } static void xenon_reset(struct sdhci_host *host, u8 mask) { … } /* * Xenon defines different values for HS200 and HS400 * in Host_Control_2 */ static void xenon_set_uhs_signaling(struct sdhci_host *host, unsigned int timing) { … } static void xenon_set_power(struct sdhci_host *host, unsigned char mode, unsigned short vdd) { … } static void xenon_voltage_switch(struct sdhci_host *host) { … } static unsigned int xenon_get_max_clock(struct sdhci_host *host) { … } static const struct sdhci_ops sdhci_xenon_ops = …; static const struct sdhci_pltfm_data sdhci_xenon_pdata = …; /* * Xenon Specific Operations in mmc_host_ops */ static void xenon_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { … } static int xenon_start_signal_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) { … } /* * Update card type. * priv->init_card_type will be used in PHY timing adjustment. */ static void xenon_init_card(struct mmc_host *mmc, struct mmc_card *card) { … } static int xenon_execute_tuning(struct mmc_host *mmc, u32 opcode) { … } static void xenon_enable_sdio_irq(struct mmc_host *mmc, int enable) { … } static void xenon_replace_mmc_host_ops(struct sdhci_host *host) { … } /* * Parse Xenon specific DT properties: * sdhc-id: the index of current SDHC. * Refer to XENON_SYS_CFG_INFO register * tun-count: the interval between re-tuning */ static int xenon_probe_params(struct platform_device *pdev) { … } static int xenon_sdhc_prepare(struct sdhci_host *host) { … } static void xenon_sdhc_unprepare(struct sdhci_host *host) { … } static int xenon_probe(struct platform_device *pdev) { … } static void xenon_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP static int xenon_suspend(struct device *dev) { … } #endif #ifdef CONFIG_PM static int xenon_runtime_suspend(struct device *dev) { … } static int xenon_runtime_resume(struct device *dev) { … } #endif /* CONFIG_PM */ static const struct dev_pm_ops sdhci_xenon_dev_pm_ops = …; static const struct of_device_id sdhci_xenon_dt_ids[] = …; MODULE_DEVICE_TABLE(of, sdhci_xenon_dt_ids); #ifdef CONFIG_ACPI static const struct acpi_device_id sdhci_xenon_acpi_ids[] = …; MODULE_DEVICE_TABLE(acpi, sdhci_xenon_acpi_ids); #endif static struct platform_driver sdhci_xenon_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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