media: move ttpci-eeprom to common

The ttpci-eeprom is actually an independent driver that
doesn't depend on the stuff under drivers/media/pci/ttpci/.

Also, it is used by an USB driver (pctv452e).

So, move it to the common directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

3 files changed, 1 insertions, 182 deletions

diff --git a/drivers/media/pci/ttpci/Makefile b/drivers/media/pci/ttpci/Makefile
index 9b44c479fcdd..61001fa5a93e 100644
--- a/drivers/media/pci/ttpci/Makefile
+++ b/drivers/media/pci/ttpci/Makefile
@@ -10,7 +10,6 @@ ifdef CONFIG_DVB_AV7110_IR
 dvb-ttpci-objs += av7110_ir.o
 endif
 
-obj-$(CONFIG_TTPCI_EEPROM) += ttpci-eeprom.o
 obj-$(CONFIG_DVB_BUDGET_CORE) += budget-core.o
 obj-$(CONFIG_DVB_BUDGET) += budget.o
 obj-$(CONFIG_DVB_BUDGET_AV) += budget-av.o
@@ -20,3 +19,4 @@ obj-$(CONFIG_DVB_AV7110) += dvb-ttpci.o
 
 ccflags-y += -I $(srctree)/drivers/media/dvb-frontends/
 ccflags-y += -I $(srctree)/drivers/media/tuners
+ccflags-y += -I $(srctree)/drivers/media/common
diff --git a/drivers/media/pci/ttpci/ttpci-eeprom.c b/drivers/media/pci/ttpci/ttpci-eeprom.c
deleted file mode 100644
index ef8746684d31..000000000000
--- a/drivers/media/pci/ttpci/ttpci-eeprom.c
+++ /dev/null
@@ -1,159 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-    Retrieve encoded MAC address from 24C16 serial 2-wire EEPROM,
-    decode it and store it in the associated adapter struct for
-    use by dvb_net.c
-
-    This card appear to have the 24C16 write protect held to ground,
-    thus permitting normal read/write operation. Theoretically it
-    would be possible to write routines to burn a different (encoded)
-    MAC address into the EEPROM.
-
-    Robert Schlabbach	GMX
-    Michael Glaum	KVH Industries
-    Holger Waechtler	Convergence
-
-    Copyright (C) 2002-2003 Ralph Metzler <rjkm@metzlerbros.de>
-			    Metzler Brothers Systementwicklung GbR
-
-
-*/
-
-#include <asm/errno.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/i2c.h>
-#include <linux/etherdevice.h>
-
-#include "ttpci-eeprom.h"
-
-#if 1
-#define dprintk(x...) do { printk(x); } while (0)
-#else
-#define dprintk(x...) do { } while (0)
-#endif
-
-
-static int check_mac_tt(u8 *buf)
-{
-	int i;
-	u16 tmp = 0xffff;
-
-	for (i = 0; i < 8; i++) {
-		tmp  = (tmp << 8) | ((tmp >> 8) ^ buf[i]);
-		tmp ^= (tmp >> 4) & 0x0f;
-		tmp ^= (tmp << 12) ^ ((tmp & 0xff) << 5);
-	}
-	tmp ^= 0xffff;
-	return (((tmp >> 8) ^ buf[8]) | ((tmp & 0xff) ^ buf[9]));
-}
-
-static int getmac_tt(u8 * decodedMAC, u8 * encodedMAC)
-{
-	u8 xor[20] = { 0x72, 0x23, 0x68, 0x19, 0x5c, 0xa8, 0x71, 0x2c,
-		       0x54, 0xd3, 0x7b, 0xf1, 0x9E, 0x23, 0x16, 0xf6,
-		       0x1d, 0x36, 0x64, 0x78};
-	u8 data[20];
-	int i;
-
-	/* In case there is a sig check failure have the orig contents available */
-	memcpy(data, encodedMAC, 20);
-
-	for (i = 0; i < 20; i++)
-		data[i] ^= xor[i];
-	for (i = 0; i < 10; i++)
-		data[i] = ((data[2 * i + 1] << 8) | data[2 * i])
-			>> ((data[2 * i + 1] >> 6) & 3);
-
-	if (check_mac_tt(data))
-		return -ENODEV;
-
-	decodedMAC[0] = data[2]; decodedMAC[1] = data[1]; decodedMAC[2] = data[0];
-	decodedMAC[3] = data[6]; decodedMAC[4] = data[5]; decodedMAC[5] = data[4];
-	return 0;
-}
-
-int ttpci_eeprom_decode_mac(u8 *decodedMAC, u8 *encodedMAC)
-{
-	u8 xor[20] = { 0x72, 0x23, 0x68, 0x19, 0x5c, 0xa8, 0x71, 0x2c,
-		       0x54, 0xd3, 0x7b, 0xf1, 0x9E, 0x23, 0x16, 0xf6,
-		       0x1d, 0x36, 0x64, 0x78};
-	u8 data[20];
-	int i;
-
-	memcpy(data, encodedMAC, 20);
-
-	for (i = 0; i < 20; i++)
-		data[i] ^= xor[i];
-	for (i = 0; i < 10; i++)
-		data[i] = ((data[2 * i + 1] << 8) | data[2 * i])
-			>> ((data[2 * i + 1] >> 6) & 3);
-
-	if (check_mac_tt(data))
-		return -ENODEV;
-
-	decodedMAC[0] = data[2];
-	decodedMAC[1] = data[1];
-	decodedMAC[2] = data[0];
-	decodedMAC[3] = data[6];
-	decodedMAC[4] = data[5];
-	decodedMAC[5] = data[4];
-	return 0;
-}
-EXPORT_SYMBOL(ttpci_eeprom_decode_mac);
-
-static int ttpci_eeprom_read_encodedMAC(struct i2c_adapter *adapter, u8 * encodedMAC)
-{
-	int ret;
-	u8 b0[] = { 0xcc };
-
-	struct i2c_msg msg[] = {
-		{ .addr = 0x50, .flags = 0, .buf = b0, .len = 1 },
-		{ .addr = 0x50, .flags = I2C_M_RD, .buf = encodedMAC, .len = 20 }
-	};
-
-	/* dprintk("%s\n", __func__); */
-
-	ret = i2c_transfer(adapter, msg, 2);
-
-	if (ret != 2)		/* Assume EEPROM isn't there */
-		return (-ENODEV);
-
-	return 0;
-}
-
-
-int ttpci_eeprom_parse_mac(struct i2c_adapter *adapter, u8 *proposed_mac)
-{
-	int ret;
-	u8 encodedMAC[20];
-	u8 decodedMAC[6];
-
-	ret = ttpci_eeprom_read_encodedMAC(adapter, encodedMAC);
-
-	if (ret != 0) {		/* Will only be -ENODEV */
-		dprintk("Couldn't read from EEPROM: not there?\n");
-		eth_zero_addr(proposed_mac);
-		return ret;
-	}
-
-	ret = getmac_tt(decodedMAC, encodedMAC);
-	if( ret != 0 ) {
-		dprintk("adapter failed MAC signature check\n");
-		dprintk("encoded MAC from EEPROM was %*phC",
-			(int)sizeof(encodedMAC), &encodedMAC);
-		eth_zero_addr(proposed_mac);
-		return ret;
-	}
-
-	memcpy(proposed_mac, decodedMAC, 6);
-	dprintk("adapter has MAC addr = %pM\n", decodedMAC);
-	return 0;
-}
-
-EXPORT_SYMBOL(ttpci_eeprom_parse_mac);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Ralph Metzler, Marcus Metzler, others");
-MODULE_DESCRIPTION("Decode dvb_net MAC address from EEPROM of PCI DVB cards made by Siemens, Technotrend, Hauppauge");
diff --git a/drivers/media/pci/ttpci/ttpci-eeprom.h b/drivers/media/pci/ttpci/ttpci-eeprom.h
deleted file mode 100644
index ee741867ba47..000000000000
--- a/drivers/media/pci/ttpci/ttpci-eeprom.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
-    Retrieve encoded MAC address from ATMEL ttpci_eeprom serial 2-wire EEPROM,
-    decode it and store it in associated adapter net device
-
-    Robert Schlabbach	GMX
-    Michael Glaum	KVH Industries
-    Holger Waechtler	Convergence
-
-
-*/
-
-#ifndef __TTPCI_EEPROM_H__
-#define __TTPCI_EEPROM_H__
-
-#include <linux/types.h>
-#include <linux/i2c.h>
-
-extern int ttpci_eeprom_decode_mac(u8 *decodedMAC, u8 *encodedMAC);
-extern int ttpci_eeprom_parse_mac(struct i2c_adapter *adapter, u8 *propsed_mac);
-
-#endif