1 /*
2 Mantis PCI bridge driver
3
4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <linux/kernel.h>
22 #include <linux/i2c.h>
23
24 #include <linux/signal.h>
25 #include <linux/sched.h>
26 #include <linux/interrupt.h>
27
28 #include "dmxdev.h"
29 #include "dvbdev.h"
30 #include "dvb_demux.h"
31 #include "dvb_frontend.h"
32 #include "dvb_net.h"
33
34 #include "mantis_common.h"
35 #include "mantis_reg.h"
36 #include "mantis_ioc.h"
37
read_eeprom_bytes(struct mantis_pci * mantis,u8 reg,u8 * data,u8 length)38 static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
39 {
40 struct i2c_adapter *adapter = &mantis->adapter;
41 int err;
42 u8 buf = reg;
43
44 struct i2c_msg msg[] = {
45 { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
46 { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
47 };
48
49 err = i2c_transfer(adapter, msg, 2);
50 if (err < 0) {
51 dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
52 err, data[0], data[1]);
53
54 return err;
55 }
56
57 return 0;
58 }
mantis_get_mac(struct mantis_pci * mantis)59 int mantis_get_mac(struct mantis_pci *mantis)
60 {
61 int err;
62 u8 mac_addr[6] = {0};
63
64 err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
65 if (err < 0) {
66 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
67
68 return err;
69 }
70
71 dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);
72
73 return 0;
74 }
75 EXPORT_SYMBOL_GPL(mantis_get_mac);
76
77 /* Turn the given bit on or off. */
mantis_gpio_set_bits(struct mantis_pci * mantis,u32 bitpos,u8 value)78 void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
79 {
80 u32 cur;
81
82 dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
83 cur = mmread(MANTIS_GPIF_ADDR);
84 if (value)
85 mantis->gpio_status = cur | (1 << bitpos);
86 else
87 mantis->gpio_status = cur & (~(1 << bitpos));
88
89 dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
90 mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
91 mmwrite(0x00, MANTIS_GPIF_DOUT);
92 }
93 EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
94
mantis_stream_control(struct mantis_pci * mantis,enum mantis_stream_control stream_ctl)95 int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
96 {
97 u32 reg;
98
99 reg = mmread(MANTIS_CONTROL);
100 switch (stream_ctl) {
101 case STREAM_TO_HIF:
102 dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
103 reg &= 0xff - MANTIS_BYPASS;
104 mmwrite(reg, MANTIS_CONTROL);
105 reg |= MANTIS_BYPASS;
106 mmwrite(reg, MANTIS_CONTROL);
107 break;
108
109 case STREAM_TO_CAM:
110 dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
111 reg |= MANTIS_BYPASS;
112 mmwrite(reg, MANTIS_CONTROL);
113 reg &= 0xff - MANTIS_BYPASS;
114 mmwrite(reg, MANTIS_CONTROL);
115 break;
116 default:
117 dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
118 return -1;
119 }
120
121 return 0;
122 }
123 EXPORT_SYMBOL_GPL(mantis_stream_control);
124