// SPDX-License-Identifier: GPL-2.0-or-later /* * Synopsys DesignWare Multimedia Card Interface driver * (Based on NXP driver for lpc 31xx) * * Copyright (C) 2009 NXP Semiconductors * Copyright (C) 2009, 2010 Imagination Technologies Ltd. */ #include <linux/blkdev.h> #include <linux/clk.h> #include <linux/debugfs.h> #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/ioport.h> #include <linux/ktime.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/prandom.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/stat.h> #include <linux/delay.h> #include <linux/irq.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/mmc/sd.h> #include <linux/mmc/sdio.h> #include <linux/bitops.h> #include <linux/regulator/consumer.h> #include <linux/of.h> #include <linux/mmc/slot-gpio.h> #include "dw_mmc.h" /* Common flag combinations */ #define DW_MCI_DATA_ERROR_FLAGS … #define DW_MCI_CMD_ERROR_FLAGS … #define DW_MCI_ERROR_FLAGS … #define DW_MCI_SEND_STATUS … #define DW_MCI_RECV_STATUS … #define DW_MCI_DMA_THRESHOLD … #define DW_MCI_FREQ_MAX … #define DW_MCI_FREQ_MIN … #define IDMAC_INT_CLR … #define DESC_RING_BUF_SZ … struct idmac_desc_64addr { … }; struct idmac_desc { … }; /* Each descriptor can transfer up to 4KB of data in chained mode */ #define DW_MCI_DESC_DATA_LENGTH … #if defined(CONFIG_DEBUG_FS) static int dw_mci_req_show(struct seq_file *s, void *v) { … } DEFINE_SHOW_ATTRIBUTE(…); static int dw_mci_regs_show(struct seq_file *s, void *v) { … } DEFINE_SHOW_ATTRIBUTE(…); static void dw_mci_init_debugfs(struct dw_mci_slot *slot) { … } #endif /* defined(CONFIG_DEBUG_FS) */ static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset) { … } static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags) { … } static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg) { … } static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd) { … } static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd) { … } static inline void dw_mci_set_cto(struct dw_mci *host) { … } static void dw_mci_start_command(struct dw_mci *host, struct mmc_command *cmd, u32 cmd_flags) { … } static inline void send_stop_abort(struct dw_mci *host, struct mmc_data *data) { … } /* DMA interface functions */ static void dw_mci_stop_dma(struct dw_mci *host) { … } static void dw_mci_dma_cleanup(struct dw_mci *host) { … } static void dw_mci_idmac_reset(struct dw_mci *host) { … } static void dw_mci_idmac_stop_dma(struct dw_mci *host) { … } static void dw_mci_dmac_complete_dma(void *arg) { … } static int dw_mci_idmac_init(struct dw_mci *host) { … } static inline int dw_mci_prepare_desc64(struct dw_mci *host, struct mmc_data *data, unsigned int sg_len) { … } static inline int dw_mci_prepare_desc32(struct dw_mci *host, struct mmc_data *data, unsigned int sg_len) { … } static int dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len) { … } static const struct dw_mci_dma_ops dw_mci_idmac_ops = …; static void dw_mci_edmac_stop_dma(struct dw_mci *host) { … } static int dw_mci_edmac_start_dma(struct dw_mci *host, unsigned int sg_len) { … } static int dw_mci_edmac_init(struct dw_mci *host) { … } static void dw_mci_edmac_exit(struct dw_mci *host) { … } static const struct dw_mci_dma_ops dw_mci_edmac_ops = …; static int dw_mci_pre_dma_transfer(struct dw_mci *host, struct mmc_data *data, int cookie) { … } static void dw_mci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq) { … } static void dw_mci_post_req(struct mmc_host *mmc, struct mmc_request *mrq, int err) { … } static int dw_mci_get_cd(struct mmc_host *mmc) { … } static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data) { … } static void dw_mci_ctrl_thld(struct dw_mci *host, struct mmc_data *data) { … } static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) { … } static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data) { … } static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit) { … } static void dw_mci_set_data_timeout(struct dw_mci *host, unsigned int timeout_ns) { … } static void __dw_mci_start_request(struct dw_mci *host, struct dw_mci_slot *slot, struct mmc_command *cmd) { … } static void dw_mci_start_request(struct dw_mci *host, struct dw_mci_slot *slot) { … } /* must be called with host->lock held */ static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot, struct mmc_request *mrq) { … } static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq) { … } static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { … } static int dw_mci_card_busy(struct mmc_host *mmc) { … } static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) { … } static int dw_mci_get_ro(struct mmc_host *mmc) { … } static void dw_mci_hw_reset(struct mmc_host *mmc) { … } static void dw_mci_prepare_sdio_irq(struct dw_mci_slot *slot, bool prepare) { … } static void __dw_mci_enable_sdio_irq(struct dw_mci_slot *slot, int enb) { … } static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb) { … } static void dw_mci_ack_sdio_irq(struct mmc_host *mmc) { … } static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode) { … } static int dw_mci_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios) { … } static bool dw_mci_reset(struct dw_mci *host) { … } static const struct mmc_host_ops dw_mci_ops = …; #ifdef CONFIG_FAULT_INJECTION static enum hrtimer_restart dw_mci_fault_timer(struct hrtimer *t) { … } static void dw_mci_start_fault_timer(struct dw_mci *host) { … } static void dw_mci_stop_fault_timer(struct dw_mci *host) { … } static void dw_mci_init_fault(struct dw_mci *host) { … } #else static void dw_mci_init_fault(struct dw_mci *host) { } static void dw_mci_start_fault_timer(struct dw_mci *host) { } static void dw_mci_stop_fault_timer(struct dw_mci *host) { } #endif static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq) __releases(&host->lock) __acquires(&host->lock) { … } static int dw_mci_command_complete(struct dw_mci *host, struct mmc_command *cmd) { … } static int dw_mci_data_complete(struct dw_mci *host, struct mmc_data *data) { … } static void dw_mci_set_drto(struct dw_mci *host) { … } static bool dw_mci_clear_pending_cmd_complete(struct dw_mci *host) { … } static bool dw_mci_clear_pending_data_complete(struct dw_mci *host) { … } static void dw_mci_work_func(struct work_struct *t) { … } /* push final bytes to part_buf, only use during push */ static void dw_mci_set_part_bytes(struct dw_mci *host, void *buf, int cnt) { … } /* append bytes to part_buf, only use during push */ static int dw_mci_push_part_bytes(struct dw_mci *host, void *buf, int cnt) { … } /* pull first bytes from part_buf, only use during pull */ static int dw_mci_pull_part_bytes(struct dw_mci *host, void *buf, int cnt) { … } /* pull final bytes from the part_buf, assuming it's just been filled */ static void dw_mci_pull_final_bytes(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt) { … } static void dw_mci_read_data_pio(struct dw_mci *host, bool dto) { … } static void dw_mci_write_data_pio(struct dw_mci *host) { … } static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status) { … } static void dw_mci_handle_cd(struct dw_mci *host) { … } static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) { … } static int dw_mci_init_slot_caps(struct dw_mci_slot *slot) { … } static int dw_mci_init_slot(struct dw_mci *host) { … } static void dw_mci_cleanup_slot(struct dw_mci_slot *slot) { … } static void dw_mci_init_dma(struct dw_mci *host) { … } static void dw_mci_cmd11_timer(struct timer_list *t) { … } static void dw_mci_cto_timer(struct timer_list *t) { … } static void dw_mci_dto_timer(struct timer_list *t) { … } #ifdef CONFIG_OF static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) { … } #else /* CONFIG_OF */ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) { return ERR_PTR(-EINVAL); } #endif /* CONFIG_OF */ static void dw_mci_enable_cd(struct dw_mci *host) { … } int dw_mci_probe(struct dw_mci *host) { … } EXPORT_SYMBOL(…); void dw_mci_remove(struct dw_mci *host) { … } EXPORT_SYMBOL(…); #ifdef CONFIG_PM int dw_mci_runtime_suspend(struct device *dev) { … } EXPORT_SYMBOL(…); int dw_mci_runtime_resume(struct device *dev) { … } EXPORT_SYMBOL(…); #endif /* CONFIG_PM */ static int __init dw_mci_init(void) { … } static void __exit dw_mci_exit(void) { … } module_init(…) …; module_exit(dw_mci_exit); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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