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gerrit-public.fairphone.software / kernel / msm-4.9 / 6e14a92c363e1f42c6e1339da8413fcfbe1bdc3a / . / drivers / media / pci / mantis / mantis_ioc.c
blob: 24fcdc63d6d55ae8cd853f886ee96247ebe08746 [file] [log] [blame]
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]1/*
2 Mantis PCI bridge driver
3
Manu Abraham8825a092009-12-15 09:13:49 -0300[diff] [blame]4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]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
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]24#include <linux/signal.h>
25#include <linux/sched.h>
26#include <linux/interrupt.h>
Alexey Dobriyanb7f080c2011-06-16 11:01:34 +0000[diff] [blame]27#include <asm/io.h>
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]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
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]39static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]40{
41 struct i2c_adapter *adapter = &mantis->adapter;
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]42 int err;
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]43 u8 buf = reg;
44
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]45 struct i2c_msg msg[] = {
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]46 { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]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}
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]60int mantis_get_mac(struct mantis_pci *mantis)
61{
62 int err;
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]63 u8 mac_addr[6] = {0};
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]64
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]65 err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]66 if (err < 0) {
67 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
68
69 return err;
70 }
71
Andy Shevchenko0e44dec2010-09-11 14:33:27 -0300[diff] [blame]72 dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]73
74 return 0;
75}
76EXPORT_SYMBOL_GPL(mantis_get_mac);
77
78/* Turn the given bit on or off. */
Ben Hutchings3037fd12010-11-14 14:56:00 -0300[diff] [blame]79void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]80{
81 u32 cur;
82
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]83 dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]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
Manu Abraham3e978a82009-12-04 05:56:35 -0300[diff] [blame]90 dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]91 mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
92 mmwrite(0x00, MANTIS_GPIF_DOUT);
93}
Ben Hutchings3037fd12010-11-14 14:56:00 -0300[diff] [blame]94EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300[diff] [blame]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);