// SPDX-License-Identifier: GPL-2.0 // // Secure Digital Host Controller // // Copyright (C) 2018 Spreadtrum, Inc. // Author: Chunyan Zhang <[email protected]> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/highmem.h> #include <linux/iopoll.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/module.h> #include <linux/of.h> #include <linux/pinctrl/consumer.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include "sdhci-pltfm.h" #include "mmc_hsq.h" /* SDHCI_ARGUMENT2 register high 16bit */ #define SDHCI_SPRD_ARG2_STUFF … #define SDHCI_SPRD_REG_32_DLL_CFG … #define SDHCI_SPRD_DLL_ALL_CPST_EN … #define SDHCI_SPRD_DLL_EN … #define SDHCI_SPRD_DLL_SEARCH_MODE … #define SDHCI_SPRD_DLL_INIT_COUNT … #define SDHCI_SPRD_DLL_PHASE_INTERNAL … #define SDHCI_SPRD_REG_32_DLL_DLY … #define SDHCI_SPRD_REG_32_DLL_DLY_OFFSET … #define SDHCIBSPRD_IT_WR_DLY_INV … #define SDHCI_SPRD_BIT_CMD_DLY_INV … #define SDHCI_SPRD_BIT_POSRD_DLY_INV … #define SDHCI_SPRD_BIT_NEGRD_DLY_INV … #define SDHCI_SPRD_REG_32_DLL_STS0 … #define SDHCI_SPRD_DLL_LOCKED … #define SDHCI_SPRD_REG_32_BUSY_POSI … #define SDHCI_SPRD_BIT_OUTR_CLK_AUTO_EN … #define SDHCI_SPRD_BIT_INNR_CLK_AUTO_EN … #define SDHCI_SPRD_REG_DEBOUNCE … #define SDHCI_SPRD_BIT_DLL_BAK … #define SDHCI_SPRD_BIT_DLL_VAL … #define SDHCI_SPRD_INT_SIGNAL_MASK … /* SDHCI_HOST_CONTROL2 */ #define SDHCI_SPRD_CTRL_HS200 … #define SDHCI_SPRD_CTRL_HS400 … #define SDHCI_SPRD_CTRL_HS400ES … /* * According to the standard specification, BIT(3) of SDHCI_SOFTWARE_RESET is * reserved, and only used on Spreadtrum's design, the hardware cannot work * if this bit is cleared. * 1 : normal work * 0 : hardware reset */ #define SDHCI_HW_RESET_CARD … #define SDHCI_SPRD_MAX_CUR … #define SDHCI_SPRD_CLK_MAX_DIV … #define SDHCI_SPRD_CLK_DEF_RATE … #define SDHCI_SPRD_PHY_DLL_CLK … #define SDHCI_SPRD_MAX_RANGE … #define SDHCI_SPRD_CMD_DLY_MASK … #define SDHCI_SPRD_POSRD_DLY_MASK … #define SDHCI_SPRD_CPST_EN … struct sdhci_sprd_host { … }; enum sdhci_sprd_tuning_type { … }; struct sdhci_sprd_phy_cfg { … }; static const struct sdhci_sprd_phy_cfg sdhci_sprd_phy_cfgs[] = …; #define TO_SPRD_HOST(host) … static void sdhci_sprd_init_config(struct sdhci_host *host) { … } static inline u32 sdhci_sprd_readl(struct sdhci_host *host, int reg) { … } static inline void sdhci_sprd_writel(struct sdhci_host *host, u32 val, int reg) { … } static inline void sdhci_sprd_writew(struct sdhci_host *host, u16 val, int reg) { … } static inline void sdhci_sprd_writeb(struct sdhci_host *host, u8 val, int reg) { … } static inline void sdhci_sprd_sd_clk_off(struct sdhci_host *host) { … } static inline void sdhci_sprd_sd_clk_on(struct sdhci_host *host) { … } static inline void sdhci_sprd_set_dll_invert(struct sdhci_host *host, u32 mask, bool en) { … } static inline u32 sdhci_sprd_calc_div(u32 base_clk, u32 clk) { … } static inline void _sdhci_sprd_set_clock(struct sdhci_host *host, unsigned int clk) { … } static void sdhci_sprd_enable_phy_dll(struct sdhci_host *host) { … } static void sdhci_sprd_set_clock(struct sdhci_host *host, unsigned int clock) { … } static unsigned int sdhci_sprd_get_max_clock(struct sdhci_host *host) { … } static unsigned int sdhci_sprd_get_min_clock(struct sdhci_host *host) { … } static void sdhci_sprd_set_uhs_signaling(struct sdhci_host *host, unsigned int timing) { … } static void sdhci_sprd_hw_reset(struct sdhci_host *host) { … } static unsigned int sdhci_sprd_get_max_timeout_count(struct sdhci_host *host) { … } static unsigned int sdhci_sprd_get_ro(struct sdhci_host *host) { … } static void sdhci_sprd_request_done(struct sdhci_host *host, struct mmc_request *mrq) { … } static void sdhci_sprd_set_power(struct sdhci_host *host, unsigned char mode, unsigned short vdd) { … } static const struct sdhci_ops sdhci_sprd_ops = …; static void sdhci_sprd_check_auto_cmd23(struct mmc_host *mmc, struct mmc_request *mrq) { … } static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq) { … } static int sdhci_sprd_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq) { … } static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) { … } static void sdhci_sprd_hs400_enhanced_strobe(struct mmc_host *mmc, struct mmc_ios *ios) { … } static int mmc_send_tuning_cmd(struct mmc_card *card) { … } static int mmc_send_tuning_data(struct mmc_card *card) { … } static int sdhci_sprd_get_best_clk_sample(struct mmc_host *mmc, u8 *value) { … } static int sdhci_sprd_tuning(struct mmc_host *mmc, struct mmc_card *card, enum sdhci_sprd_tuning_type type) { … } static int sdhci_sprd_prepare_sd_hs_cmd_tuning(struct mmc_host *mmc, struct mmc_card *card) { … } static int sdhci_sprd_execute_sd_hs_data_tuning(struct mmc_host *mmc, struct mmc_card *card) { … } static void sdhci_sprd_phy_param_parse(struct sdhci_sprd_host *sprd_host, struct device_node *np) { … } static const struct sdhci_pltfm_data sdhci_sprd_pdata = …; static int sdhci_sprd_probe(struct platform_device *pdev) { … } static void sdhci_sprd_remove(struct platform_device *pdev) { … } static const struct of_device_id sdhci_sprd_of_match[] = …; MODULE_DEVICE_TABLE(of, sdhci_sprd_of_match); #ifdef CONFIG_PM static int sdhci_sprd_runtime_suspend(struct device *dev) { … } static int sdhci_sprd_runtime_resume(struct device *dev) { … } #endif static const struct dev_pm_ops sdhci_sprd_pm_ops = …; static struct platform_driver sdhci_sprd_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
Codebase Browser
linux