// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Mantis PCI bridge driver
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Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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*/
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#include <linux/kernel.h>
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#include <linux/i2c.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <media/dmxdev.h>
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#include <media/dvbdev.h>
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#include <media/dvb_demux.h>
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#include <media/dvb_frontend.h>
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#include <media/dvb_net.h>
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#include "mantis_common.h"
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#include "mantis_reg.h"
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#include "mantis_ioc.h"
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static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
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{
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struct i2c_adapter *adapter = &mantis->adapter;
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int err;
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u8 buf = reg;
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struct i2c_msg msg[] = {
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{ .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
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{ .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
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};
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err = i2c_transfer(adapter, msg, 2);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
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err, data[0], data[1]);
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return err;
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}
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return 0;
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}
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int mantis_get_mac(struct mantis_pci *mantis)
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{
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int err;
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u8 mac_addr[6] = {0};
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err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
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if (err < 0) {
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dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
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return err;
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}
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dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mantis_get_mac);
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/* Turn the given bit on or off. */
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void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
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{
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u32 cur;
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dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
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cur = mmread(MANTIS_GPIF_ADDR);
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if (value)
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mantis->gpio_status = cur | (1 << bitpos);
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else
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mantis->gpio_status = cur & (~(1 << bitpos));
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dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
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mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
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mmwrite(0x00, MANTIS_GPIF_DOUT);
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}
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EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
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int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
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{
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u32 reg;
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reg = mmread(MANTIS_CONTROL);
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switch (stream_ctl) {
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case STREAM_TO_HIF:
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dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
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reg &= 0xff - MANTIS_BYPASS;
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mmwrite(reg, MANTIS_CONTROL);
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reg |= MANTIS_BYPASS;
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mmwrite(reg, MANTIS_CONTROL);
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break;
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case STREAM_TO_CAM:
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dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
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reg |= MANTIS_BYPASS;
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mmwrite(reg, MANTIS_CONTROL);
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reg &= 0xff - MANTIS_BYPASS;
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mmwrite(reg, MANTIS_CONTROL);
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break;
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default:
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dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
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return -1;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(mantis_stream_control);
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