[linux-2.6-block.git] / drivers / tty / serial / ifx6x60.h

// 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 */
Commit	Line	Data
e3b3d0f5	1	// SPDX-License-Identifier: GPL-2.0
af3b8881 RG	2	/****************************************************************************
	3	*
	4	* Driver for the IFX spi modem.
	5	*
	6	* Copyright (C) 2009, 2010 Intel Corp
	7	* Jim Stanley <jim.stanley@intel.com>
	8	*
af3b8881 RG	9	*****************************************************************************/
	10	#ifndef _IFX6X60_H
	11	#define _IFX6X60_H
	12
	13	#define DRVNAME "ifx6x60"
	14	#define TTYNAME "ttyIFX"
	15
af3b8881 RG	16	#define IFX_SPI_MAX_MINORS 1
	17	#define IFX_SPI_TRANSFER_SIZE 2048
	18	#define IFX_SPI_FIFO_SIZE 4096
	19
	20	#define IFX_SPI_HEADER_OVERHEAD 4
	21	#define IFX_RESET_TIMEOUT msecs_to_jiffies(50)
	22
	23	/* device flags bitfield definitions */
	24	#define IFX_SPI_STATE_PRESENT 0
	25	#define IFX_SPI_STATE_IO_IN_PROGRESS 1
	26	#define IFX_SPI_STATE_IO_READY 2
	27	#define IFX_SPI_STATE_TIMER_PENDING 3
31fe9904	28	#define IFX_SPI_STATE_IO_AVAILABLE 4
af3b8881 RG	29
	30	/* flow control bitfields */
	31	#define IFX_SPI_DCD 0
	32	#define IFX_SPI_CTS 1
	33	#define IFX_SPI_DSR 2
	34	#define IFX_SPI_RI 3
	35	#define IFX_SPI_DTR 4
	36	#define IFX_SPI_RTS 5
	37	#define IFX_SPI_TX_FC 6
	38	#define IFX_SPI_RX_FC 7
	39	#define IFX_SPI_UPDATE 8
	40
	41	#define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \
	42	IFX_SPI_HEADER_OVERHEAD)
	43
	44	#define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING
	45	#define IFX_SPI_GPIO_TARGET 0
	46	#define IFX_SPI_GPIO0 0x105
	47
	48	#define IFX_SPI_STATUS_TIMEOUT (2000*HZ)
	49
	50	/* values for bits in power status byte */
	51	#define IFX_SPI_POWER_DATA_PENDING 1
	52	#define IFX_SPI_POWER_SRDY 2
	53
	54	struct ifx_spi_device {
	55	/* Our SPI device */
	56	struct spi_device *spi_dev;
	57
	58	/* Port specific data */
	59	struct kfifo tx_fifo;
	60	spinlock_t fifo_lock;
	61	unsigned long signal_state;
	62
	63	/* TTY Layer logic */
	64	struct tty_port tty_port;
	65	struct device *tty_dev;
	66	int minor;
	67
	68	/* Low level I/O work */
	69	struct tasklet_struct io_work_tasklet;
	70	unsigned long flags;
	71	dma_addr_t rx_dma;
	72	dma_addr_t tx_dma;
	73
2f1522ec RG	74	int modem; /* Modem type */
	75	int use_dma; /* provide dma-able addrs in SPI msg */
	76	long max_hz; /* max SPI frequency */
af3b8881 RG	77
	78	spinlock_t write_lock;
	79	int write_pending;
	80	spinlock_t power_lock;
	81	unsigned char power_status;
	82
	83	unsigned char *rx_buffer;
	84	unsigned char *tx_buffer;
	85	dma_addr_t rx_bus;
	86	dma_addr_t tx_bus;
	87	unsigned char spi_more;
	88	unsigned char spi_slave_cts;
	89
	90	struct timer_list spi_timer;
	91
	92	struct spi_message spi_msg;
	93	struct spi_transfer spi_xfer;
	94
	95	struct {
	96	/* gpio lines */
	97	unsigned short srdy; /* slave-ready gpio */
	98	unsigned short mrdy; /* master-ready gpio */
	99	unsigned short reset; /* modem-reset gpio */
	100	unsigned short po; /* modem-on gpio */
	101	unsigned short reset_out; /* modem-in-reset gpio */
	102	/* state/stats */
	103	int unack_srdy_int_nb;
	104	} gpio;
	105
	106	/* modem reset */
	107	unsigned long mdm_reset_state;
	108	#define MR_START 0
	109	#define MR_INPROGRESS 1
	110	#define MR_COMPLETE 2
	111	wait_queue_head_t mdm_reset_wait;
319fb0d2	112	void (swap_buf)(unsigned char buf, int len, void *end);
af3b8881 RG	113	};
	114
	115	#endif /* _IFX6X60_H */