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1/****************************************************************************
2 *
3 * Driver for the IFX spi modem.
4 *
5 * Copyright (C) 2009, 2010 Intel Corp
6 * Jim Stanley <jim.stanley@intel.com>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 * USA
22 *
23 *
24 *
25 *****************************************************************************/
26#ifndef _IFX6X60_H
27#define _IFX6X60_H
28
29#define DRVNAME "ifx6x60"
30#define TTYNAME "ttyIFX"
31
32#define IFX_SPI_MAX_MINORS 1
33#define IFX_SPI_TRANSFER_SIZE 2048
34#define IFX_SPI_FIFO_SIZE 4096
35
36#define IFX_SPI_HEADER_OVERHEAD 4
37#define IFX_RESET_TIMEOUT msecs_to_jiffies(50)
38
39/* device flags bitfield definitions */
40#define IFX_SPI_STATE_PRESENT 0
41#define IFX_SPI_STATE_IO_IN_PROGRESS 1
42#define IFX_SPI_STATE_IO_READY 2
43#define IFX_SPI_STATE_TIMER_PENDING 3
44
45/* flow control bitfields */
46#define IFX_SPI_DCD 0
47#define IFX_SPI_CTS 1
48#define IFX_SPI_DSR 2
49#define IFX_SPI_RI 3
50#define IFX_SPI_DTR 4
51#define IFX_SPI_RTS 5
52#define IFX_SPI_TX_FC 6
53#define IFX_SPI_RX_FC 7
54#define IFX_SPI_UPDATE 8
55
56#define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \
57 IFX_SPI_HEADER_OVERHEAD)
58
59#define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING
60#define IFX_SPI_GPIO_TARGET 0
61#define IFX_SPI_GPIO0 0x105
62
63#define IFX_SPI_STATUS_TIMEOUT (2000*HZ)
64
65/* values for bits in power status byte */
66#define IFX_SPI_POWER_DATA_PENDING 1
67#define IFX_SPI_POWER_SRDY 2
68
69struct ifx_spi_device {
70 /* Our SPI device */
71 struct spi_device *spi_dev;
72
73 /* Port specific data */
74 struct kfifo tx_fifo;
75 spinlock_t fifo_lock;
76 unsigned long signal_state;
77
78 /* TTY Layer logic */
79 struct tty_port tty_port;
80 struct device *tty_dev;
81 int minor;
82
83 /* Low level I/O work */
84 struct tasklet_struct io_work_tasklet;
85 unsigned long flags;
86 dma_addr_t rx_dma;
87 dma_addr_t tx_dma;
88
89 int modem; /* Modem type */
90 int use_dma; /* provide dma-able addrs in SPI msg */
91 long max_hz; /* max SPI frequency */
92
93 spinlock_t write_lock;
94 int write_pending;
95 spinlock_t power_lock;
96 unsigned char power_status;
97
98 unsigned char *rx_buffer;
99 unsigned char *tx_buffer;
100 dma_addr_t rx_bus;
101 dma_addr_t tx_bus;
102 unsigned char spi_more;
103 unsigned char spi_slave_cts;
104
105 struct timer_list spi_timer;
106
107 struct spi_message spi_msg;
108 struct spi_transfer spi_xfer;
109
110 struct {
111 /* gpio lines */
112 unsigned short srdy; /* slave-ready gpio */
113 unsigned short mrdy; /* master-ready gpio */
114 unsigned short reset; /* modem-reset gpio */
115 unsigned short po; /* modem-on gpio */
116 unsigned short reset_out; /* modem-in-reset gpio */
117 /* state/stats */
118 int unack_srdy_int_nb;
119 } gpio;
120
121 /* modem reset */
122 unsigned long mdm_reset_state;
123#define MR_START 0
124#define MR_INPROGRESS 1
125#define MR_COMPLETE 2
126 wait_queue_head_t mdm_reset_wait;
127};
128
129#endif /* _IFX6X60_H */
1/* SPDX-License-Identifier: GPL-2.0 */
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 *
9 *****************************************************************************/
10#ifndef _IFX6X60_H
11#define _IFX6X60_H
12
13struct gpio_desc;
14
15#define DRVNAME "ifx6x60"
16#define TTYNAME "ttyIFX"
17
18#define IFX_SPI_MAX_MINORS 1
19#define IFX_SPI_TRANSFER_SIZE 2048
20#define IFX_SPI_FIFO_SIZE 4096
21
22#define IFX_SPI_HEADER_OVERHEAD 4
23#define IFX_RESET_TIMEOUT msecs_to_jiffies(50)
24
25/* device flags bitfield definitions */
26#define IFX_SPI_STATE_PRESENT 0
27#define IFX_SPI_STATE_IO_IN_PROGRESS 1
28#define IFX_SPI_STATE_IO_READY 2
29#define IFX_SPI_STATE_TIMER_PENDING 3
30#define IFX_SPI_STATE_IO_AVAILABLE 4
31
32/* flow control bitfields */
33#define IFX_SPI_DCD 0
34#define IFX_SPI_CTS 1
35#define IFX_SPI_DSR 2
36#define IFX_SPI_RI 3
37#define IFX_SPI_DTR 4
38#define IFX_SPI_RTS 5
39#define IFX_SPI_TX_FC 6
40#define IFX_SPI_RX_FC 7
41#define IFX_SPI_UPDATE 8
42
43#define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \
44 IFX_SPI_HEADER_OVERHEAD)
45
46#define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING
47#define IFX_SPI_GPIO_TARGET 0
48#define IFX_SPI_GPIO0 0x105
49
50#define IFX_SPI_STATUS_TIMEOUT (2000*HZ)
51
52/* values for bits in power status byte */
53#define IFX_SPI_POWER_DATA_PENDING 1
54#define IFX_SPI_POWER_SRDY 2
55
56struct ifx_spi_device {
57 /* Our SPI device */
58 struct spi_device *spi_dev;
59
60 /* Port specific data */
61 struct kfifo tx_fifo;
62 spinlock_t fifo_lock;
63 unsigned long signal_state;
64
65 /* TTY Layer logic */
66 struct tty_port tty_port;
67 struct device *tty_dev;
68 int minor;
69
70 /* Low level I/O work */
71 struct tasklet_struct io_work_tasklet;
72 unsigned long flags;
73 dma_addr_t rx_dma;
74 dma_addr_t tx_dma;
75
76 int modem; /* Modem type */
77 int use_dma; /* provide dma-able addrs in SPI msg */
78 long max_hz; /* max SPI frequency */
79
80 spinlock_t write_lock;
81 int write_pending;
82 spinlock_t power_lock;
83 unsigned char power_status;
84
85 unsigned char *rx_buffer;
86 unsigned char *tx_buffer;
87 dma_addr_t rx_bus;
88 dma_addr_t tx_bus;
89 unsigned char spi_more;
90 unsigned char spi_slave_cts;
91
92 struct timer_list spi_timer;
93
94 struct spi_message spi_msg;
95 struct spi_transfer spi_xfer;
96
97 struct {
98 /* gpio lines */
99 struct gpio_desc *srdy; /* slave-ready gpio */
100 struct gpio_desc *mrdy; /* master-ready gpio */
101 struct gpio_desc *reset; /* modem-reset gpio */
102 struct gpio_desc *po; /* modem-on gpio */
103 struct gpio_desc *reset_out; /* modem-in-reset gpio */
104 struct gpio_desc *pmu_reset; /* PMU reset gpio */
105 /* state/stats */
106 int unack_srdy_int_nb;
107 } gpio;
108
109 /* modem reset */
110 unsigned long mdm_reset_state;
111#define MR_START 0
112#define MR_INPROGRESS 1
113#define MR_COMPLETE 2
114 wait_queue_head_t mdm_reset_wait;
115 void (*swap_buf)(unsigned char *buf, int len, void *end);
116};
117
118#endif /* _IFX6X60_H */