* (C) Copyright 2002 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.de>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
/* includes */
for (; size; size--)
{
- byte = *ptr++;
- for (i = 8; i; i--)
- {
- f = ((byte & 1) ^ (accu & 1)) ? 0x84083001 : 0;
- accu >>= 1; accu ^= f;
- byte >>= 1;
- }
+ byte = *ptr++;
+ for (i = 8; i; i--)
+ {
+ f = ((byte & 1) ^ (accu & 1)) ? 0x84083001 : 0;
+ accu >>= 1; accu ^= f;
+ byte >>= 1;
+ }
}
return(accu);
}
while (((x = in32r(MPC107_I2CSR)) & 0x82) != 0x82)
{
- if (!timeout--)
- return -1;
+ if (!timeout--)
+ return -1;
}
if (x & 0x10)
{
- return -1;
+ return -1;
}
out32r(MPC107_I2CSR, 0);
{
while (in32r(MPC107_I2CSR) & 0x20)
{
- if (!timeout--)
- return -1;
+ if (!timeout--)
+ return -1;
}
return 0;
}
int data;
if (!mpc107_eumb_addr)
- return -6;
+ return -6;
mpc107_i2c_wait_idle (timeout);
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_read Error 1\n");
- return -2;
+ printf("mpc107_i2c_read Error 1\n");
+ return -2;
}
if (in32r(MPC107_I2CSR)&0x1)
{
- /* Generate STOP condition; device busy or not existing */
- out32r(MPC107_I2CCR, 0x80);
- return -1;
+ /* Generate STOP condition; device busy or not existing */
+ out32r(MPC107_I2CCR, 0x80);
+ return -1;
}
/* Data address */
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_read Error 2\n");
- return -3;
+ printf("mpc107_i2c_read Error 2\n");
+ return -3;
}
/* Switch to read - restart */
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_read Error 3\n");
- return -4;
+ printf("mpc107_i2c_read Error 3\n");
+ return -4;
}
out32r(MPC107_I2CCR, 0xA8); /* no ACK */
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_read Error 4\n");
- return -5;
+ printf("mpc107_i2c_read Error 4\n");
+ return -5;
}
/* Generate STOP condition */
out32r(MPC107_I2CCR, 0x88);
unsigned long timeout = MPC107_I2C_TIMEOUT;
if (!mpc107_eumb_addr)
- return -6;
+ return -6;
mpc107_i2c_wait_idle(timeout);
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_write Error 1\n");
- return -1;
+ printf("mpc107_i2c_write Error 1\n");
+ return -1;
}
/* Data address */
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_write Error 2\n");
- return -1;
+ printf("mpc107_i2c_write Error 2\n");
+ return -1;
}
/* Write */
out32r(MPC107_I2CDR, val);
if (mpc107_i2c_wait(timeout) < 0)
{
- printf("mpc107_i2c_write Error 3\n");
- return -1;
+ printf("mpc107_i2c_write Error 3\n");
+ return -1;
}
/* Generate Stop Condition */
for (i = 0; i < cnt; i++)
{
- timeout=100;
- do
- {
- val = mpc107_i2c_read_byte (device, block, addr);
- if (val < -1)
- {
- printf("i2c_read_error %d at dev %x block %x addr %x\n",
- val, device, block, addr);
- return -1;
- }
- else if (timeout==0)
- {
- printf ("i2c_read_error: timeout at dev %x block %x addr %x\n",
- device, block, addr);
- return -1;
- }
- timeout--;
- } while (val == -1); /* if no ack: try again! */
-
- *pBuf++ = (unsigned char)val;
- addr++;
-
- if ((addr == 0) && (i != cnt-1)) /* is it the same block ? */
- {
- if (block == FIRST_BLOCK)
- block = SECOND_BLOCK;
- else
- {
- printf ("ic2_read_error: read beyond 2. block !\n");
- return -1;
- }
- }
+ timeout=100;
+ do
+ {
+ val = mpc107_i2c_read_byte (device, block, addr);
+ if (val < -1)
+ {
+ printf("i2c_read_error %d at dev %x block %x addr %x\n",
+ val, device, block, addr);
+ return -1;
+ }
+ else if (timeout==0)
+ {
+ printf ("i2c_read_error: timeout at dev %x block %x addr %x\n",
+ device, block, addr);
+ return -1;
+ }
+ timeout--;
+ } while (val == -1); /* if no ack: try again! */
+
+ *pBuf++ = (unsigned char)val;
+ addr++;
+
+ if ((addr == 0) && (i != cnt-1)) /* is it the same block ? */
+ {
+ if (block == FIRST_BLOCK)
+ block = SECOND_BLOCK;
+ else
+ {
+ printf ("ic2_read_error: read beyond 2. block !\n");
+ return -1;
+ }
+ }
}
udelay(100000);
return (cnt);
for (i = 0; i < cnt; i++)
{
- while (mpc107_i2c_write_byte (device,block,addr,*pBuf) == 1);
- addr++;
- pBuf++;
-
- if ((addr == 0) && (i != cnt-1)) /* is it the same block ? */
- {
- if (block == FIRST_BLOCK)
- block = SECOND_BLOCK;
- else
- {
- printf ("ic2_write_error: write beyond 2. block !\n");
- return -1;
- }
- }
+ while (mpc107_i2c_write_byte (device,block,addr,*pBuf) == 1);
+ addr++;
+ pBuf++;
+
+ if ((addr == 0) && (i != cnt-1)) /* is it the same block ? */
+ {
+ if (block == FIRST_BLOCK)
+ block = SECOND_BLOCK;
+ else
+ {
+ printf ("ic2_write_error: write beyond 2. block !\n");
+ return -1;
+ }
+ }
}
udelay(100000);
return(cnt);
unsigned long x;
if (eumb_addr)
- mpc107_eumb_addr = eumb_addr;
+ mpc107_eumb_addr = eumb_addr;
else
- return -1;
+ return -1;
/* Set I2C clock */
x = in32r(MPC107_I2CFDR) & 0xffffff00;
projects / karo-tx-uboot.git / blobdiff