// SPDX-License-Identifier: GPL-2.0 /* * Driver for Amlogic A1 SPI flash controller (SPIFC) * * Copyright (c) 2023, SberDevices. All Rights Reserved. * * Author: Martin Kurbanov <[email protected]> */ #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/spi/spi.h> #include <linux/spi/spi-mem.h> #include <linux/types.h> #define SPIFC_A1_AHB_CTRL_REG … #define SPIFC_A1_AHB_BUS_EN … #define SPIFC_A1_USER_CTRL0_REG … #define SPIFC_A1_USER_REQUEST_ENABLE … #define SPIFC_A1_USER_REQUEST_FINISH … #define SPIFC_A1_USER_DATA_UPDATED … #define SPIFC_A1_USER_CTRL1_REG … #define SPIFC_A1_USER_CMD_ENABLE … #define SPIFC_A1_USER_CMD_MODE … #define SPIFC_A1_USER_CMD_CODE … #define SPIFC_A1_USER_ADDR_ENABLE … #define SPIFC_A1_USER_ADDR_MODE … #define SPIFC_A1_USER_ADDR_BYTES … #define SPIFC_A1_USER_DOUT_ENABLE … #define SPIFC_A1_USER_DOUT_MODE … #define SPIFC_A1_USER_DOUT_BYTES … #define SPIFC_A1_USER_CTRL2_REG … #define SPIFC_A1_USER_DUMMY_ENABLE … #define SPIFC_A1_USER_DUMMY_MODE … #define SPIFC_A1_USER_DUMMY_CLK_SYCLES … #define SPIFC_A1_USER_CTRL3_REG … #define SPIFC_A1_USER_DIN_ENABLE … #define SPIFC_A1_USER_DIN_MODE … #define SPIFC_A1_USER_DIN_BYTES … #define SPIFC_A1_USER_ADDR_REG … #define SPIFC_A1_AHB_REQ_CTRL_REG … #define SPIFC_A1_AHB_REQ_ENABLE … #define SPIFC_A1_ACTIMING0_REG … #define SPIFC_A1_TSLCH … #define SPIFC_A1_TCLSH … #define SPIFC_A1_TSHWL … #define SPIFC_A1_TSHSL2 … #define SPIFC_A1_TSHSL1 … #define SPIFC_A1_TWHSL … #define SPIFC_A1_DBUF_CTRL_REG … #define SPIFC_A1_DBUF_DIR … #define SPIFC_A1_DBUF_AUTO_UPDATE_ADDR … #define SPIFC_A1_DBUF_ADDR … #define SPIFC_A1_DBUF_DATA_REG … #define SPIFC_A1_USER_DBUF_ADDR_REG … #define SPIFC_A1_BUFFER_SIZE … #define SPIFC_A1_MAX_HZ … #define SPIFC_A1_MIN_HZ … #define SPIFC_A1_USER_CMD(op) … #define SPIFC_A1_USER_ADDR(op) … #define SPIFC_A1_USER_DUMMY(op) … #define SPIFC_A1_TSLCH_VAL … #define SPIFC_A1_TCLSH_VAL … #define SPIFC_A1_TSHWL_VAL … #define SPIFC_A1_TSHSL2_VAL … #define SPIFC_A1_TSHSL1_VAL … #define SPIFC_A1_TWHSL_VAL … #define SPIFC_A1_ACTIMING0_VAL … struct amlogic_spifc_a1 { … }; static int amlogic_spifc_a1_request(struct amlogic_spifc_a1 *spifc, bool read) { … } static void amlogic_spifc_a1_drain_buffer(struct amlogic_spifc_a1 *spifc, char *buf, u32 len) { … } static void amlogic_spifc_a1_fill_buffer(struct amlogic_spifc_a1 *spifc, const char *buf, u32 len) { … } static void amlogic_spifc_a1_user_init(struct amlogic_spifc_a1 *spifc) { … } static void amlogic_spifc_a1_set_cmd(struct amlogic_spifc_a1 *spifc, u32 cmd_cfg) { … } static void amlogic_spifc_a1_set_addr(struct amlogic_spifc_a1 *spifc, u32 addr, u32 addr_cfg) { … } static void amlogic_spifc_a1_set_dummy(struct amlogic_spifc_a1 *spifc, u32 dummy_cfg) { … } static int amlogic_spifc_a1_read(struct amlogic_spifc_a1 *spifc, void *buf, u32 size, u32 mode) { … } static int amlogic_spifc_a1_write(struct amlogic_spifc_a1 *spifc, const void *buf, u32 size, u32 mode) { … } static int amlogic_spifc_a1_set_freq(struct amlogic_spifc_a1 *spifc, u32 freq) { … } static int amlogic_spifc_a1_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) { … } static int amlogic_spifc_a1_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op) { … } static void amlogic_spifc_a1_hw_init(struct amlogic_spifc_a1 *spifc) { … } static const struct spi_controller_mem_ops amlogic_spifc_a1_mem_ops = …; static int amlogic_spifc_a1_probe(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP static int amlogic_spifc_a1_suspend(struct device *dev) { … } static int amlogic_spifc_a1_resume(struct device *dev) { … } #endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_PM static int amlogic_spifc_a1_runtime_suspend(struct device *dev) { … } static int amlogic_spifc_a1_runtime_resume(struct device *dev) { … } #endif /* CONFIG_PM */ static const struct dev_pm_ops amlogic_spifc_a1_pm_ops = …; #ifdef CONFIG_OF static const struct of_device_id amlogic_spifc_a1_dt_match[] = …; MODULE_DEVICE_TABLE(of, amlogic_spifc_a1_dt_match); #endif /* CONFIG_OF */ static struct platform_driver amlogic_spifc_a1_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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