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 #include <asm/io.h>
28
29 #include "dmxdev.h"
30 #include "dvbdev.h"
31 #include "dvb_demux.h"
32 #include "dvb_frontend.h"
33 #include "dvb_net.h"
34
35 #include "mantis_common.h"
36 #include "mantis_reg.h"
37 #include "mantis_ioc.h"
38
read_eeprom_bytes(struct mantis_pci * mantis,u8 reg,u8 * data,u8 length)39 static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
40 {
41 struct i2c_adapter *adapter = &mantis->adapter;
42 int err;
43 u8 buf = reg;
44
45 struct i2c_msg msg[] = {
46 { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
47 { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
48 };
49
50 err = i2c_transfer(adapter, msg, 2);
51 if (err < 0) {
52 dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
53 err, data[0], data[1]);
54
55 return err;
56 }
57
58 return 0;
59 }
mantis_get_mac(struct mantis_pci * mantis)60 int mantis_get_mac(struct mantis_pci *mantis)
61 {
62 int err;
63 u8 mac_addr[6] = {0};
64
65 err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
66 if (err < 0) {
67 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
68
69 return err;
70 }
71
72 dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);
73
74 return 0;
75 }
76 EXPORT_SYMBOL_GPL(mantis_get_mac);
77
78 /* Turn the given bit on or off. */
mantis_gpio_set_bits(struct mantis_pci * mantis,u32 bitpos,u8 value)79 void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
80 {
81 u32 cur;
82
83 dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
84 cur = mmread(MANTIS_GPIF_ADDR);
85 if (value)
86 mantis->gpio_status = cur | (1 << bitpos);
87 else
88 mantis->gpio_status = cur & (~(1 << bitpos));
89
90 dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
91 mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
92 mmwrite(0x00, MANTIS_GPIF_DOUT);
93 }
94 EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
95
mantis_stream_control(struct mantis_pci * mantis,enum mantis_stream_control stream_ctl)96 int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
97 {
98 u32 reg;
99
100 reg = mmread(MANTIS_CONTROL);
101 switch (stream_ctl) {
102 case STREAM_TO_HIF:
103 dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
104 reg &= 0xff - MANTIS_BYPASS;
105 mmwrite(reg, MANTIS_CONTROL);
106 reg |= MANTIS_BYPASS;
107 mmwrite(reg, MANTIS_CONTROL);
108 break;
109
110 case STREAM_TO_CAM:
111 dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
112 reg |= MANTIS_BYPASS;
113 mmwrite(reg, MANTIS_CONTROL);
114 reg &= 0xff - MANTIS_BYPASS;
115 mmwrite(reg, MANTIS_CONTROL);
116 break;
117 default:
118 dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
119 return -1;
120 }
121
122 return 0;
123 }
124 EXPORT_SYMBOL_GPL(mantis_stream_control);
125