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 38static 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} 59int 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, 72 " MAC Address=[%02x:%02x:%02x:%02x:%02x:%02x]\n", 73 mac_addr[0], 74 mac_addr[1], 75 mac_addr[2], 76 mac_addr[3], 77 mac_addr[4], 78 mac_addr[5]); 79 80 return 0; 81} 82EXPORT_SYMBOL_GPL(mantis_get_mac); 83 84/* Turn the given bit on or off. */ 85void gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value) 86{ 87 u32 cur; 88 89 dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value); 90 cur = mmread(MANTIS_GPIF_ADDR); 91 if (value) 92 mantis->gpio_status = cur | (1 << bitpos); 93 else 94 mantis->gpio_status = cur & (~(1 << bitpos)); 95 96 dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status); 97 mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR); 98 mmwrite(0x00, MANTIS_GPIF_DOUT); 99} 100EXPORT_SYMBOL_GPL(gpio_set_bits); 101 102int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl) 103{ 104 u32 reg; 105 106 reg = mmread(MANTIS_CONTROL); 107 switch (stream_ctl) { 108 case STREAM_TO_HIF: 109 dprintk(MANTIS_DEBUG, 1, "Set stream to HIF"); 110 reg &= 0xff - MANTIS_BYPASS; 111 mmwrite(reg, MANTIS_CONTROL); 112 reg |= MANTIS_BYPASS; 113 mmwrite(reg, MANTIS_CONTROL); 114 break; 115 116 case STREAM_TO_CAM: 117 dprintk(MANTIS_DEBUG, 1, "Set stream to CAM"); 118 reg |= MANTIS_BYPASS; 119 mmwrite(reg, MANTIS_CONTROL); 120 reg &= 0xff - MANTIS_BYPASS; 121 mmwrite(reg, MANTIS_CONTROL); 122 break; 123 default: 124 dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl); 125 return -1; 126 } 127 128 return 0; 129} 130EXPORT_SYMBOL_GPL(mantis_stream_control); 131