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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 Mantis PCI bridge driver4 5 Copyright (C) Manu Abraham (abraham.manu@gmail.com)6 7*/8 9#include <linux/kernel.h>10#include <linux/i2c.h>11 12#include <linux/signal.h>13#include <linux/sched.h>14#include <linux/interrupt.h>15#include <asm/io.h>16 17#include <media/dmxdev.h>18#include <media/dvbdev.h>19#include <media/dvb_demux.h>20#include <media/dvb_frontend.h>21#include <media/dvb_net.h>22 23#include "mantis_common.h"24#include "mantis_reg.h"25#include "mantis_ioc.h"26 27static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)28{29 struct i2c_adapter *adapter = &mantis->adapter;30 int err;31 u8 buf = reg;32 33 struct i2c_msg msg[] = {34 { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },35 { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },36 };37 38 err = i2c_transfer(adapter, msg, 2);39 if (err < 0) {40 dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",41 err, data[0], data[1]);42 43 return err;44 }45 46 return 0;47}48int mantis_get_mac(struct mantis_pci *mantis)49{50 int err;51 u8 mac_addr[6] = {0};52 53 err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);54 if (err < 0) {55 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);56 57 return err;58 }59 60 dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);61 62 return 0;63}64EXPORT_SYMBOL_GPL(mantis_get_mac);65 66/* Turn the given bit on or off. */67void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)68{69 u32 cur;70 71 dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);72 cur = mmread(MANTIS_GPIF_ADDR);73 if (value)74 mantis->gpio_status = cur | (1 << bitpos);75 else76 mantis->gpio_status = cur & (~(1 << bitpos));77 78 dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);79 mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);80 mmwrite(0x00, MANTIS_GPIF_DOUT);81}82EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);83 84int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)85{86 u32 reg;87 88 reg = mmread(MANTIS_CONTROL);89 switch (stream_ctl) {90 case STREAM_TO_HIF:91 dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");92 reg &= 0xff - MANTIS_BYPASS;93 mmwrite(reg, MANTIS_CONTROL);94 reg |= MANTIS_BYPASS;95 mmwrite(reg, MANTIS_CONTROL);96 break;97 98 case STREAM_TO_CAM:99 dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");100 reg |= MANTIS_BYPASS;101 mmwrite(reg, MANTIS_CONTROL);102 reg &= 0xff - MANTIS_BYPASS;103 mmwrite(reg, MANTIS_CONTROL);104 break;105 default:106 dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);107 return -1;108 }109 110 return 0;111}112EXPORT_SYMBOL_GPL(mantis_stream_control);113