// SPDX-License-Identifier: GPL-2.0-only // Copyright (c) 2021 Sunplus Inc. // Author: Li-hao Kuo <[email protected]> #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/reset.h> #include <linux/spi/spi.h> #define SP7021_DATA_RDY_REG … #define SP7021_SLAVE_DMA_CTRL_REG … #define SP7021_SLAVE_DMA_LENGTH_REG … #define SP7021_SLAVE_DMA_ADDR_REG … #define SP7021_SLAVE_DATA_RDY … #define SP7021_SLAVE_SW_RST … #define SP7021_SLA_DMA_W_INT … #define SP7021_SLAVE_CLR_INT … #define SP7021_SLAVE_DMA_EN … #define SP7021_SLAVE_DMA_RW … #define SP7021_SLAVE_DMA_CMD … #define SP7021_FIFO_REG … #define SP7021_SPI_STATUS_REG … #define SP7021_SPI_CONFIG_REG … #define SP7021_INT_BUSY_REG … #define SP7021_DMA_CTRL_REG … #define SP7021_SPI_START_FD … #define SP7021_FD_SW_RST … #define SP7021_TX_EMP_FLAG … #define SP7021_RX_EMP_FLAG … #define SP7021_RX_FULL_FLAG … #define SP7021_FINISH_FLAG … #define SP7021_TX_CNT_MASK … #define SP7021_RX_CNT_MASK … #define SP7021_TX_LEN_MASK … #define SP7021_GET_LEN_MASK … #define SP7021_SET_TX_LEN … #define SP7021_SET_XFER_LEN … #define SP7021_CPOL_FD … #define SP7021_CPHA_R … #define SP7021_CPHA_W … #define SP7021_LSB_SEL … #define SP7021_CS_POR … #define SP7021_FD_SEL … #define SP7021_RX_UNIT … #define SP7021_TX_UNIT … #define SP7021_TX_EMP_FLAG_MASK … #define SP7021_RX_FULL_FLAG_MASK … #define SP7021_FINISH_FLAG_MASK … #define SP7021_CLEAN_RW_BYTE … #define SP7021_CLEAN_FLUG_MASK … #define SP7021_CLK_MASK … #define SP7021_INT_BYPASS … #define SP7021_CLR_MASTER_INT … #define SP7021_SPI_DATA_SIZE … #define SP7021_FIFO_DATA_LEN … enum { … }; struct sp7021_spi_ctlr { … }; static irqreturn_t sp7021_spi_target_irq(int irq, void *dev) { … } static int sp7021_spi_target_abort(struct spi_controller *ctlr) { … } static int sp7021_spi_target_tx(struct spi_device *spi, struct spi_transfer *xfer) { … } static int sp7021_spi_target_rx(struct spi_device *spi, struct spi_transfer *xfer) { … } static void sp7021_spi_host_rb(struct sp7021_spi_ctlr *pspim, unsigned int len) { … } static void sp7021_spi_host_wb(struct sp7021_spi_ctlr *pspim, unsigned int len) { … } static irqreturn_t sp7021_spi_host_irq(int irq, void *dev) { … } static void sp7021_prep_transfer(struct spi_controller *ctlr, struct spi_device *spi) { … } // preliminary set CS, CPOL, CPHA and LSB static int sp7021_spi_controller_prepare_message(struct spi_controller *ctlr, struct spi_message *msg) { … } static void sp7021_spi_setup_clk(struct spi_controller *ctlr, struct spi_transfer *xfer) { … } static int sp7021_spi_host_transfer_one(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer) { … } static int sp7021_spi_target_transfer_one(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer) { … } static void sp7021_spi_disable_unprepare(void *data) { … } static void sp7021_spi_reset_control_assert(void *data) { … } static int sp7021_spi_controller_probe(struct platform_device *pdev) { … } static void sp7021_spi_controller_remove(struct platform_device *pdev) { … } static int __maybe_unused sp7021_spi_controller_suspend(struct device *dev) { … } static int __maybe_unused sp7021_spi_controller_resume(struct device *dev) { … } #ifdef CONFIG_PM static int sp7021_spi_runtime_suspend(struct device *dev) { … } static int sp7021_spi_runtime_resume(struct device *dev) { … } #endif static const struct dev_pm_ops sp7021_spi_pm_ops = …; static const struct of_device_id sp7021_spi_controller_ids[] = …; MODULE_DEVICE_TABLE(of, sp7021_spi_controller_ids); static struct platform_driver sp7021_spi_controller_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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