| // 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 */ |