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