Root/
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 | #define IFX_SPI_STATE_IO_AVAILABLE 4 |
45 | |
46 | /* flow control bitfields */ |
47 | #define IFX_SPI_DCD 0 |
48 | #define IFX_SPI_CTS 1 |
49 | #define IFX_SPI_DSR 2 |
50 | #define IFX_SPI_RI 3 |
51 | #define IFX_SPI_DTR 4 |
52 | #define IFX_SPI_RTS 5 |
53 | #define IFX_SPI_TX_FC 6 |
54 | #define IFX_SPI_RX_FC 7 |
55 | #define IFX_SPI_UPDATE 8 |
56 | |
57 | #define IFX_SPI_PAYLOAD_SIZE (IFX_SPI_TRANSFER_SIZE - \ |
58 | IFX_SPI_HEADER_OVERHEAD) |
59 | |
60 | #define IFX_SPI_IRQ_TYPE DETECT_EDGE_RISING |
61 | #define IFX_SPI_GPIO_TARGET 0 |
62 | #define IFX_SPI_GPIO0 0x105 |
63 | |
64 | #define IFX_SPI_STATUS_TIMEOUT (2000*HZ) |
65 | |
66 | /* values for bits in power status byte */ |
67 | #define IFX_SPI_POWER_DATA_PENDING 1 |
68 | #define IFX_SPI_POWER_SRDY 2 |
69 | |
70 | struct ifx_spi_device { |
71 | /* Our SPI device */ |
72 | struct spi_device *spi_dev; |
73 | |
74 | /* Port specific data */ |
75 | struct kfifo tx_fifo; |
76 | spinlock_t fifo_lock; |
77 | unsigned long signal_state; |
78 | |
79 | /* TTY Layer logic */ |
80 | struct tty_port tty_port; |
81 | struct device *tty_dev; |
82 | int minor; |
83 | |
84 | /* Low level I/O work */ |
85 | struct tasklet_struct io_work_tasklet; |
86 | unsigned long flags; |
87 | dma_addr_t rx_dma; |
88 | dma_addr_t tx_dma; |
89 | |
90 | int modem; /* Modem type */ |
91 | int use_dma; /* provide dma-able addrs in SPI msg */ |
92 | long max_hz; /* max SPI frequency */ |
93 | |
94 | spinlock_t write_lock; |
95 | int write_pending; |
96 | spinlock_t power_lock; |
97 | unsigned char power_status; |
98 | |
99 | unsigned char *rx_buffer; |
100 | unsigned char *tx_buffer; |
101 | dma_addr_t rx_bus; |
102 | dma_addr_t tx_bus; |
103 | unsigned char spi_more; |
104 | unsigned char spi_slave_cts; |
105 | |
106 | struct timer_list spi_timer; |
107 | |
108 | struct spi_message spi_msg; |
109 | struct spi_transfer spi_xfer; |
110 | |
111 | struct { |
112 | /* gpio lines */ |
113 | unsigned short srdy; /* slave-ready gpio */ |
114 | unsigned short mrdy; /* master-ready gpio */ |
115 | unsigned short reset; /* modem-reset gpio */ |
116 | unsigned short po; /* modem-on gpio */ |
117 | unsigned short reset_out; /* modem-in-reset gpio */ |
118 | /* state/stats */ |
119 | int unack_srdy_int_nb; |
120 | } gpio; |
121 | |
122 | /* modem reset */ |
123 | unsigned long mdm_reset_state; |
124 | #define MR_START 0 |
125 | #define MR_INPROGRESS 1 |
126 | #define MR_COMPLETE 2 |
127 | wait_queue_head_t mdm_reset_wait; |
128 | void (*swap_buf)(unsigned char *buf, int len, void *end); |
129 | }; |
130 | |
131 | #endif /* _IFX6X60_H */ |
132 |
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