// SPDX-License-Identifier: BSD-3-Clause /* * Copyright (c) 2020, MIPI Alliance, Inc. * * Author: Nicolas Pitre <[email protected]> * * Core driver code with main interface to the I3C subsystem. */ #include <linux/bitfield.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/i3c/master.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/module.h> #include <linux/platform_device.h> #include "hci.h" #include "ext_caps.h" #include "cmd.h" #include "dat.h" /* * Host Controller Capabilities and Operation Registers */ #define HCI_VERSION … #define HC_CONTROL … #define HC_CONTROL_BUS_ENABLE … #define HC_CONTROL_RESUME … #define HC_CONTROL_ABORT … #define HC_CONTROL_HALT_ON_CMD_TIMEOUT … #define HC_CONTROL_HOT_JOIN_CTRL … #define HC_CONTROL_I2C_TARGET_PRESENT … #define HC_CONTROL_PIO_MODE … #define HC_CONTROL_DATA_BIG_ENDIAN … #define HC_CONTROL_IBA_INCLUDE … #define MASTER_DEVICE_ADDR … #define MASTER_DYNAMIC_ADDR_VALID … #define MASTER_DYNAMIC_ADDR(v) … #define HC_CAPABILITIES … #define HC_CAP_SG_DC_EN … #define HC_CAP_SG_IBI_EN … #define HC_CAP_SG_CR_EN … #define HC_CAP_MAX_DATA_LENGTH … #define HC_CAP_CMD_SIZE … #define HC_CAP_DIRECT_COMMANDS_EN … #define HC_CAP_MULTI_LANE_EN … #define HC_CAP_CMD_CCC_DEFBYTE … #define HC_CAP_HDR_BT_EN … #define HC_CAP_HDR_TS_EN … #define HC_CAP_HDR_DDR_EN … #define HC_CAP_NON_CURRENT_MASTER_CAP … #define HC_CAP_DATA_BYTE_CFG_EN … #define HC_CAP_AUTO_COMMAND … #define HC_CAP_COMBO_COMMAND … #define RESET_CONTROL … #define BUS_RESET … #define BUS_RESET_TYPE … #define IBI_QUEUE_RST … #define RX_FIFO_RST … #define TX_FIFO_RST … #define RESP_QUEUE_RST … #define CMD_QUEUE_RST … #define SOFT_RST … #define PRESENT_STATE … #define STATE_CURRENT_MASTER … #define INTR_STATUS … #define INTR_STATUS_ENABLE … #define INTR_SIGNAL_ENABLE … #define INTR_FORCE … #define INTR_HC_CMD_SEQ_UFLOW_STAT … #define INTR_HC_RESET_CANCEL … #define INTR_HC_INTERNAL_ERR … #define INTR_HC_PIO … #define INTR_HC_RINGS … #define DAT_SECTION … #define DAT_ENTRY_SIZE … #define DAT_TABLE_SIZE … #define DAT_TABLE_OFFSET … #define DCT_SECTION … #define DCT_ENTRY_SIZE … #define DCT_TABLE_INDEX … #define DCT_TABLE_SIZE … #define DCT_TABLE_OFFSET … #define RING_HEADERS_SECTION … #define RING_HEADERS_OFFSET … #define PIO_SECTION … #define PIO_REGS_OFFSET … #define EXT_CAPS_SECTION … #define EXT_CAPS_OFFSET … #define IBI_NOTIFY_CTRL … #define IBI_NOTIFY_SIR_REJECTED … #define IBI_NOTIFY_MR_REJECTED … #define IBI_NOTIFY_HJ_REJECTED … #define DEV_CTX_BASE_LO … #define DEV_CTX_BASE_HI … static inline struct i3c_hci *to_i3c_hci(struct i3c_master_controller *m) { … } static int i3c_hci_bus_init(struct i3c_master_controller *m) { … } static void i3c_hci_bus_cleanup(struct i3c_master_controller *m) { … } void mipi_i3c_hci_resume(struct i3c_hci *hci) { … } /* located here rather than pio.c because needed bits are in core reg space */ void mipi_i3c_hci_pio_reset(struct i3c_hci *hci) { … } /* located here rather than dct.c because needed bits are in core reg space */ void mipi_i3c_hci_dct_index_reset(struct i3c_hci *hci) { … } static int i3c_hci_send_ccc_cmd(struct i3c_master_controller *m, struct i3c_ccc_cmd *ccc) { … } static int i3c_hci_daa(struct i3c_master_controller *m) { … } static int i3c_hci_alloc_safe_xfer_buf(struct i3c_hci *hci, struct hci_xfer *xfer) { … } static void i3c_hci_free_safe_xfer_buf(struct i3c_hci *hci, struct hci_xfer *xfer) { … } static int i3c_hci_priv_xfers(struct i3c_dev_desc *dev, struct i3c_priv_xfer *i3c_xfers, int nxfers) { … } static int i3c_hci_i2c_xfers(struct i2c_dev_desc *dev, const struct i2c_msg *i2c_xfers, int nxfers) { … } static int i3c_hci_attach_i3c_dev(struct i3c_dev_desc *dev) { … } static int i3c_hci_reattach_i3c_dev(struct i3c_dev_desc *dev, u8 old_dyn_addr) { … } static void i3c_hci_detach_i3c_dev(struct i3c_dev_desc *dev) { … } static int i3c_hci_attach_i2c_dev(struct i2c_dev_desc *dev) { … } static void i3c_hci_detach_i2c_dev(struct i2c_dev_desc *dev) { … } static int i3c_hci_request_ibi(struct i3c_dev_desc *dev, const struct i3c_ibi_setup *req) { … } static void i3c_hci_free_ibi(struct i3c_dev_desc *dev) { … } static int i3c_hci_enable_ibi(struct i3c_dev_desc *dev) { … } static int i3c_hci_disable_ibi(struct i3c_dev_desc *dev) { … } static void i3c_hci_recycle_ibi_slot(struct i3c_dev_desc *dev, struct i3c_ibi_slot *slot) { … } static const struct i3c_master_controller_ops i3c_hci_ops = …; static irqreturn_t i3c_hci_irq_handler(int irq, void *dev_id) { … } static int i3c_hci_init(struct i3c_hci *hci) { … } static int i3c_hci_probe(struct platform_device *pdev) { … } static void i3c_hci_remove(struct platform_device *pdev) { … } static const __maybe_unused struct of_device_id i3c_hci_of_match[] = …; MODULE_DEVICE_TABLE(of, i3c_hci_of_match); static const struct acpi_device_id i3c_hci_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, i3c_hci_acpi_match); static struct platform_driver i3c_hci_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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