// SPDX-License-Identifier: GPL-2.0-only /* * TI QSPI driver * * Copyright (C) 2013 Texas Instruments Incorporated - https://www.ti.com * Author: Sourav Poddar <[email protected]> */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/device.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/omap-dma.h> #include <linux/platform_device.h> #include <linux/err.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/pm_runtime.h> #include <linux/of.h> #include <linux/pinctrl/consumer.h> #include <linux/mfd/syscon.h> #include <linux/regmap.h> #include <linux/sizes.h> #include <linux/spi/spi.h> #include <linux/spi/spi-mem.h> struct ti_qspi_regs { … }; struct ti_qspi { … }; #define QSPI_PID … #define QSPI_SYSCONFIG … #define QSPI_SPI_CLOCK_CNTRL_REG … #define QSPI_SPI_DC_REG … #define QSPI_SPI_CMD_REG … #define QSPI_SPI_STATUS_REG … #define QSPI_SPI_DATA_REG … #define QSPI_SPI_SETUP_REG(n) … #define QSPI_SPI_SWITCH_REG … #define QSPI_SPI_DATA_REG_1 … #define QSPI_SPI_DATA_REG_2 … #define QSPI_SPI_DATA_REG_3 … #define QSPI_COMPLETION_TIMEOUT … /* Clock Control */ #define QSPI_CLK_EN … #define QSPI_CLK_DIV_MAX … /* Command */ #define QSPI_EN_CS(n) … #define QSPI_WLEN(n) … #define QSPI_3_PIN … #define QSPI_RD_SNGL … #define QSPI_WR_SNGL … #define QSPI_RD_DUAL … #define QSPI_RD_QUAD … #define QSPI_INVAL … #define QSPI_FLEN(n) … #define QSPI_WLEN_MAX_BITS … #define QSPI_WLEN_MAX_BYTES … #define QSPI_WLEN_MASK … /* STATUS REGISTER */ #define BUSY … #define WC … /* Device Control */ #define QSPI_DD(m, n) … #define QSPI_CKPHA(n) … #define QSPI_CSPOL(n) … #define QSPI_CKPOL(n) … #define QSPI_FRAME … #define QSPI_AUTOSUSPEND_TIMEOUT … #define MEM_CS_EN(n) … #define MEM_CS_MASK … #define MM_SWITCH … #define QSPI_SETUP_RD_NORMAL … #define QSPI_SETUP_RD_DUAL … #define QSPI_SETUP_RD_QUAD … #define QSPI_SETUP_ADDR_SHIFT … #define QSPI_SETUP_DUMMY_SHIFT … #define QSPI_DMA_BUFFER_SIZE … static inline unsigned long ti_qspi_read(struct ti_qspi *qspi, unsigned long reg) { … } static inline void ti_qspi_write(struct ti_qspi *qspi, unsigned long val, unsigned long reg) { … } static int ti_qspi_setup(struct spi_device *spi) { … } static void ti_qspi_setup_clk(struct ti_qspi *qspi, u32 speed_hz) { … } static void ti_qspi_restore_ctx(struct ti_qspi *qspi) { … } static inline u32 qspi_is_busy(struct ti_qspi *qspi) { … } static inline int ti_qspi_poll_wc(struct ti_qspi *qspi) { … } static int qspi_write_msg(struct ti_qspi *qspi, struct spi_transfer *t, int count) { … } static int qspi_read_msg(struct ti_qspi *qspi, struct spi_transfer *t, int count) { … } static int qspi_transfer_msg(struct ti_qspi *qspi, struct spi_transfer *t, int count) { … } static void ti_qspi_dma_callback(void *param) { … } static int ti_qspi_dma_xfer(struct ti_qspi *qspi, dma_addr_t dma_dst, dma_addr_t dma_src, size_t len) { … } static int ti_qspi_dma_bounce_buffer(struct ti_qspi *qspi, loff_t offs, void *to, size_t readsize) { … } static int ti_qspi_dma_xfer_sg(struct ti_qspi *qspi, struct sg_table rx_sg, loff_t from) { … } static void ti_qspi_enable_memory_map(struct spi_device *spi) { … } static void ti_qspi_disable_memory_map(struct spi_device *spi) { … } static void ti_qspi_setup_mmap_read(struct spi_device *spi, u8 opcode, u8 data_nbits, u8 addr_width, u8 dummy_bytes) { … } static int ti_qspi_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op) { … } static int ti_qspi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) { … } static const struct spi_controller_mem_ops ti_qspi_mem_ops = …; static int ti_qspi_start_transfer_one(struct spi_controller *host, struct spi_message *m) { … } static int ti_qspi_runtime_resume(struct device *dev) { … } static void ti_qspi_dma_cleanup(struct ti_qspi *qspi) { … } static const struct of_device_id ti_qspi_match[] = …; MODULE_DEVICE_TABLE(of, ti_qspi_match); static int ti_qspi_probe(struct platform_device *pdev) { … } static void ti_qspi_remove(struct platform_device *pdev) { … } static const struct dev_pm_ops ti_qspi_pm_ops = …; static struct platform_driver ti_qspi_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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