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 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 } 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. */ 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 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