74ba9207e1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
// 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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