/* * MOXA ART MMC host driver. * * Copyright (C) 2014 Jonas Jensen * * Jonas Jensen <[email protected]> * * Based on code from * Moxa Technologies Co., Ltd. <www.moxa.com> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/module.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/blkdev.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/mmc/host.h> #include <linux/mmc/sd.h> #include <linux/sched.h> #include <linux/io.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/clk.h> #include <linux/bitops.h> #include <linux/of_dma.h> #include <linux/spinlock.h> #define REG_COMMAND … #define REG_ARGUMENT … #define REG_RESPONSE0 … #define REG_RESPONSE1 … #define REG_RESPONSE2 … #define REG_RESPONSE3 … #define REG_RESPONSE_COMMAND … #define REG_DATA_CONTROL … #define REG_DATA_TIMER … #define REG_DATA_LENGTH … #define REG_STATUS … #define REG_CLEAR … #define REG_INTERRUPT_MASK … #define REG_POWER_CONTROL … #define REG_CLOCK_CONTROL … #define REG_BUS_WIDTH … #define REG_DATA_WINDOW … #define REG_FEATURE … #define REG_REVISION … /* REG_COMMAND */ #define CMD_SDC_RESET … #define CMD_EN … #define CMD_APP_CMD … #define CMD_LONG_RSP … #define CMD_NEED_RSP … #define CMD_IDX_MASK … /* REG_RESPONSE_COMMAND */ #define RSP_CMD_APP … #define RSP_CMD_IDX_MASK … /* REG_DATA_CONTROL */ #define DCR_DATA_FIFO_RESET … #define DCR_DATA_THRES … #define DCR_DATA_EN … #define DCR_DMA_EN … #define DCR_DATA_WRITE … #define DCR_BLK_SIZE … /* REG_DATA_LENGTH */ #define DATA_LEN_MASK … /* REG_STATUS */ #define WRITE_PROT … #define CARD_DETECT … /* 1-10 below can be sent to either registers, interrupt or clear. */ #define CARD_CHANGE … #define FIFO_ORUN … #define FIFO_URUN … #define DATA_END … #define CMD_SENT … #define DATA_CRC_OK … #define RSP_CRC_OK … #define DATA_TIMEOUT … #define RSP_TIMEOUT … #define DATA_CRC_FAIL … #define RSP_CRC_FAIL … #define MASK_RSP … #define MASK_DATA … #define MASK_INTR_PIO … /* REG_POWER_CONTROL */ #define SD_POWER_ON … #define SD_POWER_MASK … /* REG_CLOCK_CONTROL */ #define CLK_HISPD … #define CLK_OFF … #define CLK_SD … #define CLK_DIV_MASK … /* REG_BUS_WIDTH */ #define BUS_WIDTH_4_SUPPORT … #define BUS_WIDTH_4 … #define BUS_WIDTH_1 … #define MMC_VDD_360 … #define MIN_POWER … #define MAX_RETRIES … struct moxart_host { … }; static inline void moxart_init_sg(struct moxart_host *host, struct mmc_data *data) { … } static inline int moxart_next_sg(struct moxart_host *host) { … } static int moxart_wait_for_status(struct moxart_host *host, u32 mask, u32 *status) { … } static void moxart_send_command(struct moxart_host *host, struct mmc_command *cmd) { … } static void moxart_dma_complete(void *param) { … } static bool moxart_use_dma(struct moxart_host *host) { … } static void moxart_transfer_dma(struct mmc_data *data, struct moxart_host *host) { … } static void moxart_transfer_pio(struct moxart_host *host) { … } static void moxart_prepare_data(struct moxart_host *host) { … } static void moxart_request(struct mmc_host *mmc, struct mmc_request *mrq) { … } static irqreturn_t moxart_irq(int irq, void *devid) { … } static void moxart_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { … } static int moxart_get_ro(struct mmc_host *mmc) { … } static const struct mmc_host_ops moxart_ops = …; static int moxart_probe(struct platform_device *pdev) { … } static void moxart_remove(struct platform_device *pdev) { … } static const struct of_device_id moxart_mmc_match[] = …; MODULE_DEVICE_TABLE(of, moxart_mmc_match); static struct platform_driver moxart_mmc_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …;
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