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
39static 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}
60int 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}
76EXPORT_SYMBOL_GPL(mantis_get_mac);
77
78/* Turn the given bit on or off. */
79void 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}
94EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
95
96int 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}
124EXPORT_SYMBOL_GPL(mantis_stream_control);
125