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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_THROTTLE_CODE */ | |
33 | ||
34 | #define IFX_SPI_MAX_MINORS 1 | |
35 | #define IFX_SPI_TRANSFER_SIZE 2048 | |
36 | #define IFX_SPI_FIFO_SIZE 4096 | |
37 | ||
38 | #define IFX_SPI_HEADER_OVERHEAD 4 | |
39 | #define IFX_RESET_TIMEOUT msecs_to_jiffies(50) | |
40 | ||
41 | /* device flags bitfield definitions */ | |
42 | #define IFX_SPI_STATE_PRESENT 0 | |
43 | #define IFX_SPI_STATE_IO_IN_PROGRESS 1 | |
44 | #define IFX_SPI_STATE_IO_READY 2 | |
45 | #define IFX_SPI_STATE_TIMER_PENDING 3 | |
46 | ||
47 | /* flow control bitfields */ | |
48 | #define IFX_SPI_DCD 0 | |
49 | #define IFX_SPI_CTS 1 | |
50 | #define IFX_SPI_DSR 2 | |
51 | #define IFX_SPI_RI 3 | |
52 | #define IFX_SPI_DTR 4 | |
53 | #define IFX_SPI_RTS 5 | |
54 | #define IFX_SPI_TX_FC 6 | |
55 | #define IFX_SPI_RX_FC 7 | |
56 | #define IFX_SPI_UPDATE 8 | |
57 | ||
58 | #define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \ | |
59 | IFX_SPI_HEADER_OVERHEAD) | |
60 | ||
61 | #define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING | |
62 | #define IFX_SPI_GPIO_TARGET 0 | |
63 | #define IFX_SPI_GPIO0 0x105 | |
64 | ||
65 | #define IFX_SPI_STATUS_TIMEOUT (2000*HZ) | |
66 | ||
67 | /* values for bits in power status byte */ | |
68 | #define IFX_SPI_POWER_DATA_PENDING 1 | |
69 | #define IFX_SPI_POWER_SRDY 2 | |
70 | ||
71 | struct ifx_spi_device { | |
72 | /* Our SPI device */ | |
73 | struct spi_device *spi_dev; | |
74 | ||
75 | /* Port specific data */ | |
76 | struct kfifo tx_fifo; | |
77 | spinlock_t fifo_lock; | |
78 | unsigned long signal_state; | |
79 | ||
80 | /* TTY Layer logic */ | |
81 | struct tty_port tty_port; | |
82 | struct device *tty_dev; | |
83 | int minor; | |
84 | ||
85 | /* Low level I/O work */ | |
86 | struct tasklet_struct io_work_tasklet; | |
87 | unsigned long flags; | |
88 | dma_addr_t rx_dma; | |
89 | dma_addr_t tx_dma; | |
90 | ||
91 | int is_6160; /* Modem type */ | |
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 */ |