// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2008-2014, The Linux foundation. All rights reserved. */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/err.h> #include <linux/interconnect.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/list.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_opp.h> #include <linux/pm_runtime.h> #include <linux/spi/spi.h> #include "internals.h" #define QUP_CONFIG … #define QUP_STATE … #define QUP_IO_M_MODES … #define QUP_SW_RESET … #define QUP_OPERATIONAL … #define QUP_ERROR_FLAGS … #define QUP_ERROR_FLAGS_EN … #define QUP_OPERATIONAL_MASK … #define QUP_HW_VERSION … #define QUP_MX_OUTPUT_CNT … #define QUP_OUTPUT_FIFO … #define QUP_MX_WRITE_CNT … #define QUP_MX_INPUT_CNT … #define QUP_MX_READ_CNT … #define QUP_INPUT_FIFO … #define SPI_CONFIG … #define SPI_IO_CONTROL … #define SPI_ERROR_FLAGS … #define SPI_ERROR_FLAGS_EN … /* QUP_CONFIG fields */ #define QUP_CONFIG_SPI_MODE … #define QUP_CONFIG_CLOCK_AUTO_GATE … #define QUP_CONFIG_NO_INPUT … #define QUP_CONFIG_NO_OUTPUT … #define QUP_CONFIG_N … /* QUP_STATE fields */ #define QUP_STATE_VALID … #define QUP_STATE_RESET … #define QUP_STATE_RUN … #define QUP_STATE_PAUSE … #define QUP_STATE_MASK … #define QUP_STATE_CLEAR … #define QUP_HW_VERSION_2_1_1 … /* QUP_IO_M_MODES fields */ #define QUP_IO_M_PACK_EN … #define QUP_IO_M_UNPACK_EN … #define QUP_IO_M_INPUT_MODE_MASK_SHIFT … #define QUP_IO_M_OUTPUT_MODE_MASK_SHIFT … #define QUP_IO_M_INPUT_MODE_MASK … #define QUP_IO_M_OUTPUT_MODE_MASK … #define QUP_IO_M_OUTPUT_BLOCK_SIZE(x) … #define QUP_IO_M_OUTPUT_FIFO_SIZE(x) … #define QUP_IO_M_INPUT_BLOCK_SIZE(x) … #define QUP_IO_M_INPUT_FIFO_SIZE(x) … #define QUP_IO_M_MODE_FIFO … #define QUP_IO_M_MODE_BLOCK … #define QUP_IO_M_MODE_DMOV … #define QUP_IO_M_MODE_BAM … /* QUP_OPERATIONAL fields */ #define QUP_OP_IN_BLOCK_READ_REQ … #define QUP_OP_OUT_BLOCK_WRITE_REQ … #define QUP_OP_MAX_INPUT_DONE_FLAG … #define QUP_OP_MAX_OUTPUT_DONE_FLAG … #define QUP_OP_IN_SERVICE_FLAG … #define QUP_OP_OUT_SERVICE_FLAG … #define QUP_OP_IN_FIFO_FULL … #define QUP_OP_OUT_FIFO_FULL … #define QUP_OP_IN_FIFO_NOT_EMPTY … #define QUP_OP_OUT_FIFO_NOT_EMPTY … /* QUP_ERROR_FLAGS and QUP_ERROR_FLAGS_EN fields */ #define QUP_ERROR_OUTPUT_OVER_RUN … #define QUP_ERROR_INPUT_UNDER_RUN … #define QUP_ERROR_OUTPUT_UNDER_RUN … #define QUP_ERROR_INPUT_OVER_RUN … /* SPI_CONFIG fields */ #define SPI_CONFIG_HS_MODE … #define SPI_CONFIG_INPUT_FIRST … #define SPI_CONFIG_LOOPBACK … /* SPI_IO_CONTROL fields */ #define SPI_IO_C_FORCE_CS … #define SPI_IO_C_CLK_IDLE_HIGH … #define SPI_IO_C_MX_CS_MODE … #define SPI_IO_C_CS_N_POLARITY_0 … #define SPI_IO_C_CS_SELECT(x) … #define SPI_IO_C_CS_SELECT_MASK … #define SPI_IO_C_TRISTATE_CS … #define SPI_IO_C_NO_TRI_STATE … /* SPI_ERROR_FLAGS and SPI_ERROR_FLAGS_EN fields */ #define SPI_ERROR_CLK_OVER_RUN … #define SPI_ERROR_CLK_UNDER_RUN … #define SPI_NUM_CHIPSELECTS … #define SPI_MAX_XFER … /* high speed mode is when bus rate is greater then 26MHz */ #define SPI_HS_MIN_RATE … #define SPI_MAX_RATE … #define SPI_DELAY_THRESHOLD … #define SPI_DELAY_RETRY … #define SPI_BUS_WIDTH … struct spi_qup { … }; static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer); static inline bool spi_qup_is_flag_set(struct spi_qup *controller, u32 flag) { … } static inline bool spi_qup_is_dma_xfer(int mode) { … } /* get's the transaction size length */ static inline unsigned int spi_qup_len(struct spi_qup *controller) { … } static inline bool spi_qup_is_valid_state(struct spi_qup *controller) { … } static int spi_qup_vote_bw(struct spi_qup *controller, u32 speed_hz) { … } static int spi_qup_set_state(struct spi_qup *controller, u32 state) { … } static void spi_qup_read_from_fifo(struct spi_qup *controller, u32 num_words) { … } static void spi_qup_read(struct spi_qup *controller, u32 *opflags) { … } static void spi_qup_write_to_fifo(struct spi_qup *controller, u32 num_words) { … } static void spi_qup_dma_done(void *data) { … } static void spi_qup_write(struct spi_qup *controller) { … } static int spi_qup_prep_sg(struct spi_controller *host, struct scatterlist *sgl, unsigned int nents, enum dma_transfer_direction dir, dma_async_tx_callback callback) { … } static void spi_qup_dma_terminate(struct spi_controller *host, struct spi_transfer *xfer) { … } static u32 spi_qup_sgl_get_nents_len(struct scatterlist *sgl, u32 max, u32 *nents) { … } static int spi_qup_do_dma(struct spi_device *spi, struct spi_transfer *xfer, unsigned long timeout) { … } static int spi_qup_do_pio(struct spi_device *spi, struct spi_transfer *xfer, unsigned long timeout) { … } static bool spi_qup_data_pending(struct spi_qup *controller) { … } static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id) { … } /* set clock freq ... bits per word, determine mode */ static int spi_qup_io_prep(struct spi_device *spi, struct spi_transfer *xfer) { … } /* prep qup for another spi transaction of specific type */ static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer) { … } static int spi_qup_transfer_one(struct spi_controller *host, struct spi_device *spi, struct spi_transfer *xfer) { … } static bool spi_qup_can_dma(struct spi_controller *host, struct spi_device *spi, struct spi_transfer *xfer) { … } static void spi_qup_release_dma(struct spi_controller *host) { … } static int spi_qup_init_dma(struct spi_controller *host, resource_size_t base) { … } static void spi_qup_set_cs(struct spi_device *spi, bool val) { … } static int spi_qup_probe(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int spi_qup_pm_suspend_runtime(struct device *device) { … } static int spi_qup_pm_resume_runtime(struct device *device) { … } #endif /* CONFIG_PM */ #ifdef CONFIG_PM_SLEEP static int spi_qup_suspend(struct device *device) { … } static int spi_qup_resume(struct device *device) { … } #endif /* CONFIG_PM_SLEEP */ static void spi_qup_remove(struct platform_device *pdev) { … } static const struct of_device_id spi_qup_dt_match[] = …; MODULE_DEVICE_TABLE(of, spi_qup_dt_match); static const struct dev_pm_ops spi_qup_dev_pm_ops = …; static struct platform_driver spi_qup_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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