diff options
Diffstat (limited to 'drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h')
| -rw-r--r-- | drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h b/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h new file mode 100644 index 000000000000..0517fee2c668 --- /dev/null +++ b/drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Intel Corporation */ + +#ifndef _INTEL_THC_DEV_H_ +#define _INTEL_THC_DEV_H_ + +#include <linux/cdev.h> +#include <linux/mutex.h> +#include <linux/workqueue.h> + +#include "intel-thc-dma.h" + +#define THC_REGMAP_COMMON_OFFSET 0x10 +#define THC_REGMAP_MMIO_OFFSET 0x1000 + +/* + * THC Port type + * @THC_PORT_TYPE_SPI: This port is used for HIDSPI + * @THC_PORT_TYPE_I2C: This port is used for HIDI2C + */ +enum thc_port_type { + THC_PORT_TYPE_SPI = 0, + THC_PORT_TYPE_I2C = 1, +}; + +/** + * THC interrupt flag + * @THC_NONDMA_INT: THC non-DMA interrupt + * @THC_RXDMA1_INT: THC RxDMA1 interrupt + * @THC_RXDMA2_INT: THC RxDMA2 interrupt + * @THC_SWDMA_INT: THC SWDMA interrupt + * @THC_TXDMA_INT: THC TXDMA interrupt + * @THC_PIO_DONE_INT: THC PIO complete interrupt + * @THC_I2CSUBIP_INT: THC I2C subsystem interrupt + * @THC_TXN_ERR_INT: THC transfer error interrupt + * @THC_FATAL_ERR_INT: THC fatal error interrupt + */ +enum thc_int_type { + THC_NONDMA_INT = 0, + THC_RXDMA1_INT = 1, + THC_RXDMA2_INT = 2, + THC_SWDMA_INT = 3, + THC_TXDMA_INT = 4, + THC_PIO_DONE_INT = 5, + THC_I2CSUBIP_INT = 6, + THC_TXN_ERR_INT = 7, + THC_FATAL_ERR_INT = 8, + THC_UNKNOWN_INT +}; + +/** + * struct thc_device - THC private device struct + * @thc_regmap: MMIO regmap structure for accessing THC registers + * @mmio_addr: MMIO registers address + * @thc_bus_lock: mutex locker for THC config + * @port_type: port type of THC port instance + * @pio_int_supported: PIO interrupt supported flag + * @dma_ctx: DMA specific data + * @write_complete_wait: signal event for DMA write complete + * @swdma_complete_wait: signal event for SWDMA sequence complete + * @write_done: bool value that indicates if DMA write is done + * @swdma_done: bool value that indicates if SWDMA swquence is done + * @perf_limit: the delay between read operation and write operation + * @i2c_subip_regs: the copy of THC I2C sub-system registers for resuming restore + */ +struct thc_device { + struct device *dev; + struct regmap *thc_regmap; + void __iomem *mmio_addr; + struct mutex thc_bus_lock; + enum thc_port_type port_type; + bool pio_int_supported; + + struct thc_dma_context *dma_ctx; + + wait_queue_head_t write_complete_wait; + wait_queue_head_t swdma_complete_wait; + bool write_done; + bool swdma_done; + + u32 perf_limit; + + u32 *i2c_subip_regs; +}; + +struct thc_device *thc_dev_init(struct device *device, void __iomem *mem_addr); +int thc_tic_pio_read(struct thc_device *dev, const u32 address, + const u32 size, u32 *actual_size, u32 *buffer); +int thc_tic_pio_write(struct thc_device *dev, const u32 address, + const u32 size, const u32 *buffer); +int thc_tic_pio_write_and_read(struct thc_device *dev, const u32 address, + const u32 write_size, const u32 *write_buffer, + const u32 read_size, u32 *actual_size, u32 *read_buffer); +void thc_interrupt_config(struct thc_device *dev); +void thc_int_trigger_type_select(struct thc_device *dev, bool edge_trigger); +void thc_interrupt_enable(struct thc_device *dev, bool int_enable); +void thc_set_pio_interrupt_support(struct thc_device *dev, bool supported); +int thc_interrupt_quiesce(const struct thc_device *dev, bool int_quiesce); +void thc_ltr_config(struct thc_device *dev, u32 active_ltr_us, u32 lp_ltr_us); +void thc_change_ltr_mode(struct thc_device *dev, u32 ltr_mode); +void thc_ltr_unconfig(struct thc_device *dev); +u32 thc_int_cause_read(struct thc_device *dev); +int thc_interrupt_handler(struct thc_device *dev); +int thc_port_select(struct thc_device *dev, enum thc_port_type port_type); +int thc_spi_read_config(struct thc_device *dev, u32 spi_freq_val, + u32 io_mode, u32 opcode, u32 spi_rd_mps); +int thc_spi_write_config(struct thc_device *dev, u32 spi_freq_val, + u32 io_mode, u32 opcode, u32 spi_wr_mps, u32 perf_limit); +void thc_spi_input_output_address_config(struct thc_device *dev, u32 input_hdr_addr, + u32 input_bdy_addr, u32 output_addr); +int thc_i2c_subip_init(struct thc_device *dev, const u32 target_address, + const u32 speed, const u32 hcnt, const u32 lcnt); +int thc_i2c_subip_regs_save(struct thc_device *dev); +int thc_i2c_subip_regs_restore(struct thc_device *dev); + +#endif /* _INTEL_THC_DEV_H_ */ |