// SPDX-License-Identifier: GPL-2.0 /**************************************************************************** * * Driver for the IFX spi modem. * * Copyright (C) 2009, 2010 Intel Corp * Jim Stanley <jim.stanley@intel.com> * *****************************************************************************/ #ifndef _IFX6X60_H #define _IFX6X60_H #define DRVNAME "ifx6x60" #define TTYNAME "ttyIFX" #define IFX_SPI_MAX_MINORS 1 #define IFX_SPI_TRANSFER_SIZE 2048 #define IFX_SPI_FIFO_SIZE 4096 #define IFX_SPI_HEADER_OVERHEAD 4 #define IFX_RESET_TIMEOUT msecs_to_jiffies(50) /* device flags bitfield definitions */ #define IFX_SPI_STATE_PRESENT 0 #define IFX_SPI_STATE_IO_IN_PROGRESS 1 #define IFX_SPI_STATE_IO_READY 2 #define IFX_SPI_STATE_TIMER_PENDING 3 #define IFX_SPI_STATE_IO_AVAILABLE 4 /* flow control bitfields */ #define IFX_SPI_DCD 0 #define IFX_SPI_CTS 1 #define IFX_SPI_DSR 2 #define IFX_SPI_RI 3 #define IFX_SPI_DTR 4 #define IFX_SPI_RTS 5 #define IFX_SPI_TX_FC 6 #define IFX_SPI_RX_FC 7 #define IFX_SPI_UPDATE 8 #define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \ IFX_SPI_HEADER_OVERHEAD) #define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING #define IFX_SPI_GPIO_TARGET 0 #define IFX_SPI_GPIO0 0x105 #define IFX_SPI_STATUS_TIMEOUT (2000*HZ) /* values for bits in power status byte */ #define IFX_SPI_POWER_DATA_PENDING 1 #define IFX_SPI_POWER_SRDY 2 struct ifx_spi_device { /* Our SPI device */ struct spi_device *spi_dev; /* Port specific data */ struct kfifo tx_fifo; spinlock_t fifo_lock; unsigned long signal_state; /* TTY Layer logic */ struct tty_port tty_port; struct device *tty_dev; int minor; /* Low level I/O work */ struct tasklet_struct io_work_tasklet; unsigned long flags; dma_addr_t rx_dma; dma_addr_t tx_dma; int modem; /* Modem type */ int use_dma; /* provide dma-able addrs in SPI msg */ long max_hz; /* max SPI frequency */ spinlock_t write_lock; int write_pending; spinlock_t power_lock; unsigned char power_status; unsigned char *rx_buffer; unsigned char *tx_buffer; dma_addr_t rx_bus; dma_addr_t tx_bus; unsigned char spi_more; unsigned char spi_slave_cts; struct timer_list spi_timer; struct spi_message spi_msg; struct spi_transfer spi_xfer; struct { /* gpio lines */ unsigned short srdy; /* slave-ready gpio */ unsigned short mrdy; /* master-ready gpio */ unsigned short reset; /* modem-reset gpio */ unsigned short po; /* modem-on gpio */ unsigned short reset_out; /* modem-in-reset gpio */ /* state/stats */ int unack_srdy_int_nb; } gpio; /* modem reset */ unsigned long mdm_reset_state; #define MR_START 0 #define MR_INPROGRESS 1 #define MR_COMPLETE 2 wait_queue_head_t mdm_reset_wait; void (*swap_buf)(unsigned char *buf, int len, void *end); }; #endif /* _IFX6X60_H */