// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics 2018 - All Rights Reserved * Author: Ludovic Barre <[email protected]> for STMicroelectronics. */ #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/dmaengine.h> #include <linux/dma-mapping.h> #include <linux/errno.h> #include <linux/gpio/consumer.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/pinctrl/consumer.h> #include <linux/pm_runtime.h> #include <linux/platform_device.h> #include <linux/reset.h> #include <linux/sizes.h> #include <linux/spi/spi-mem.h> #define QSPI_CR … #define CR_EN … #define CR_ABORT … #define CR_DMAEN … #define CR_TCEN … #define CR_SSHIFT … #define CR_DFM … #define CR_FSEL … #define CR_FTHRES_SHIFT … #define CR_TEIE … #define CR_TCIE … #define CR_FTIE … #define CR_SMIE … #define CR_TOIE … #define CR_APMS … #define CR_PRESC_MASK … #define QSPI_DCR … #define DCR_FSIZE_MASK … #define QSPI_SR … #define SR_TEF … #define SR_TCF … #define SR_FTF … #define SR_SMF … #define SR_TOF … #define SR_BUSY … #define SR_FLEVEL_MASK … #define QSPI_FCR … #define FCR_CTEF … #define FCR_CTCF … #define FCR_CSMF … #define QSPI_DLR … #define QSPI_CCR … #define CCR_INST_MASK … #define CCR_IMODE_MASK … #define CCR_ADMODE_MASK … #define CCR_ADSIZE_MASK … #define CCR_DCYC_MASK … #define CCR_DMODE_MASK … #define CCR_FMODE_MASK … #define CCR_FMODE_INDW … #define CCR_FMODE_INDR … #define CCR_FMODE_APM … #define CCR_FMODE_MM … #define CCR_BUSWIDTH_0 … #define CCR_BUSWIDTH_1 … #define CCR_BUSWIDTH_2 … #define CCR_BUSWIDTH_4 … #define QSPI_AR … #define QSPI_ABR … #define QSPI_DR … #define QSPI_PSMKR … #define QSPI_PSMAR … #define QSPI_PIR … #define QSPI_LPTR … #define STM32_QSPI_MAX_MMAP_SZ … #define STM32_QSPI_MAX_NORCHIP … #define STM32_FIFO_TIMEOUT_US … #define STM32_BUSY_TIMEOUT_US … #define STM32_ABT_TIMEOUT_US … #define STM32_COMP_TIMEOUT_MS … #define STM32_AUTOSUSPEND_DELAY … struct stm32_qspi_flash { … }; struct stm32_qspi { … }; static irqreturn_t stm32_qspi_irq(int irq, void *dev_id) { … } static void stm32_qspi_read_fifo(u8 *val, void __iomem *addr) { … } static void stm32_qspi_write_fifo(u8 *val, void __iomem *addr) { … } static int stm32_qspi_tx_poll(struct stm32_qspi *qspi, const struct spi_mem_op *op) { … } static int stm32_qspi_tx_mm(struct stm32_qspi *qspi, const struct spi_mem_op *op) { … } static void stm32_qspi_dma_callback(void *arg) { … } static int stm32_qspi_tx_dma(struct stm32_qspi *qspi, const struct spi_mem_op *op) { … } static int stm32_qspi_tx(struct stm32_qspi *qspi, const struct spi_mem_op *op) { … } static int stm32_qspi_wait_nobusy(struct stm32_qspi *qspi) { … } static int stm32_qspi_wait_cmd(struct stm32_qspi *qspi) { … } static int stm32_qspi_wait_poll_status(struct stm32_qspi *qspi) { … } static int stm32_qspi_get_mode(u8 buswidth) { … } static int stm32_qspi_send(struct spi_device *spi, const struct spi_mem_op *op) { … } static int stm32_qspi_poll_status(struct spi_mem *mem, const struct spi_mem_op *op, u16 mask, u16 match, unsigned long initial_delay_us, unsigned long polling_rate_us, unsigned long timeout_ms) { … } static int stm32_qspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) { … } static int stm32_qspi_dirmap_create(struct spi_mem_dirmap_desc *desc) { … } static ssize_t stm32_qspi_dirmap_read(struct spi_mem_dirmap_desc *desc, u64 offs, size_t len, void *buf) { … } static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, struct spi_message *msg) { … } static int stm32_qspi_setup(struct spi_device *spi) { … } static int stm32_qspi_dma_setup(struct stm32_qspi *qspi) { … } static void stm32_qspi_dma_free(struct stm32_qspi *qspi) { … } /* * no special host constraint, so use default spi_mem_default_supports_op * to check supported mode. */ static const struct spi_controller_mem_ops stm32_qspi_mem_ops = …; static int stm32_qspi_probe(struct platform_device *pdev) { … } static void stm32_qspi_remove(struct platform_device *pdev) { … } static int __maybe_unused stm32_qspi_runtime_suspend(struct device *dev) { … } static int __maybe_unused stm32_qspi_runtime_resume(struct device *dev) { … } static int __maybe_unused stm32_qspi_suspend(struct device *dev) { … } static int __maybe_unused stm32_qspi_resume(struct device *dev) { … } static const struct dev_pm_ops stm32_qspi_pm_ops = …; static const struct of_device_id stm32_qspi_match[] = …; MODULE_DEVICE_TABLE(of, stm32_qspi_match); static struct platform_driver stm32_qspi_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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