* (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.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+
*/
#include <common.h>
+#include <console.h>
#if defined(CONFIG_HARD_I2C)
#include <asm/cpm_8260.h>
#include <i2c.h>
-/* define to enable debug messages */
-#undef DEBUG_I2C
-
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_I2C_MULTI_BUS)
#define BD_I2C_RX_ERR BD_SC_OV
-#ifdef DEBUG_I2C
-#define PRINTD(x) printf x
-#else
-#define PRINTD(x)
-#endif
-
/*
* Returns the best value of I2BRG to meet desired clock speed of I2C with
* input parameters (clock speed, filter, and predivider value).
{
int moddiv = 1 << (5 - (modval & 3)), brgdiv, div;
- PRINTD(("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
- hz, speed, filter, modval));
+ debug("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
+ hz, speed, filter, modval);
div = moddiv * speed;
brgdiv = (hz + div - 1) / div;
- PRINTD(("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv));
+ debug("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv);
*brgval = ((brgdiv + 1) / 2) - 3 - (2 * filter);
if ((*brgval < 0) || (*brgval > 255)) {
- PRINTD(("\t\trejected brgval=%d\n", *brgval));
+ debug("\t\trejected brgval=%d\n", *brgval);
return -1;
}
div = moddiv * brgdiv;
*totspeed = hz / div;
- PRINTD(("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed));
+ debug("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed);
return 0;
}
}
}
- PRINTD(("[I2C] Best is:\n"));
- PRINTD(("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
+ debug("[I2C] Best is:\n");
+ debug("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
hz, speed, bestspeed_filter, bestspeed_modval, bestspeed_brgval,
- bestspeed_diff));
+ bestspeed_diff);
i2c->i2c_i2mod |= ((bestspeed_modval & 3) << 1) |
(bestspeed_filter << 3);
i2c->i2c_i2brg = bestspeed_brgval & 0xff;
- PRINTD(("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod,
- i2c->i2c_i2brg));
+ debug("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod,
+ i2c->i2c_i2brg);
return 1;
}
i2c_init_board();
#endif
- dpaddr = *((unsigned short *) (&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
if (dpaddr == 0) {
/* need to allocate dual port ram */
dpaddr = m8260_cpm_dpalloc(64 +
(NUM_RX_BDS * sizeof(I2C_BD)) +
(NUM_TX_BDS * sizeof(I2C_BD)) +
MAX_TX_SPACE, 64);
- *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE])) =
+ immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)] =
dpaddr;
}
* and current CPU rate (we assume sccr dfbgr field is 0;
* divide BRGCLK by 1)
*/
- PRINTD(("[I2C] Setting rate...\n"));
- i2c_setrate(gd->brg_clk, CONFIG_SYS_I2C_SPEED);
+ debug("[I2C] Setting rate...\n");
+ i2c_setrate(gd->arch.brg_clk, CONFIG_SYS_I2C_SPEED);
/* Set I2C controller in master mode */
i2c->i2c_i2com = 0x01;
txbd = (I2C_BD *)((unsigned char *) &immap->
im_dprambase[iip->iic_tbase]);
- PRINTD(("[I2C] rbase = %04x\n", iip->iic_rbase));
- PRINTD(("[I2C] tbase = %04x\n", iip->iic_tbase));
- PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] rbase = %04x\n", iip->iic_rbase);
+ debug("[I2C] tbase = %04x\n", iip->iic_tbase);
+ debug("[I2C] rxbd = %08x\n", (int) rxbd);
+ debug("[I2C] txbd = %08x\n", (int) txbd);
/* Set big endian byte order */
iip->iic_tfcr = 0x10;
volatile iic_t *iip;
uint dpaddr;
- PRINTD(("[I2C] i2c_newio\n"));
+ debug("[I2C] i2c_newio\n");
- dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
iip = (iic_t *)&immap->im_dprambase[dpaddr];
state->rx_idx = 0;
state->tx_idx = 0;
state->err_cb = NULL;
state->cb_data = NULL;
- PRINTD(("[I2C] rxbd = %08x\n", (int)state->rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int)state->txbd));
- PRINTD(("[I2C] tx_buf = %08x\n", (int)state->tx_buf));
+ debug("[I2C] rxbd = %08x\n", (int)state->rxbd);
+ debug("[I2C] txbd = %08x\n", (int)state->txbd);
+ debug("[I2C] tx_buf = %08x\n", (int)state->tx_buf);
/* clear the buffer memory */
memset((char *) state->tx_buf, 0, MAX_TX_SPACE);
volatile I2C_BD *txbd;
int i, j;
- PRINTD(("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
- address, secondary_address, flags, size));
+ debug("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
+ address, secondary_address, flags, size);
/* trying to send message larger than BD */
if (size > I2C_RXTX_LEN)
txbd = (I2C_BD *)state->txbd;
txbd->addr = state->tx_buf;
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] txbd = %08x\n", (int) txbd);
if (flags & I2CF_START_COND) {
- PRINTD(("[I2C] Formatting addresses...\n"));
+ debug("[I2C] Formatting addresses...\n");
if (flags & I2CF_ENABLE_SECONDARY) {
/* Length of message plus dest addresses */
txbd->length = size + 2;
txbd->status |= BD_SC_LAST | BD_SC_WRAP;
/* Copy data to send into buffer */
- PRINTD(("[I2C] copy data...\n"));
+ debug("[I2C] copy data...\n");
for (j = 0; j < size; i++, j++)
txbd->addr[i] = dataout[j];
- PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
+ debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]);
/* advance state */
state->tx_buf += txbd->length;
{
volatile I2C_BD *rxbd, *txbd;
- PRINTD(("[I2C] i2c_receive %02d %02d %02d\n", address,
- secondary_address, flags));
+ debug("[I2C] i2c_receive %02d %02d %02d\n", address,
+ secondary_address, flags);
/* Expected to receive too much */
if (size_to_expect > I2C_RXTX_LEN)
rxbd = (I2C_BD *) state->rxbd;
txbd = (I2C_BD *) state->txbd;
- PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
- PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+ debug("[I2C] rxbd = %08x\n", (int) rxbd);
+ debug("[I2C] txbd = %08x\n", (int) txbd);
txbd->addr = state->tx_buf;
rxbd->status |= BD_SC_WRAP;
}
- PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
- PRINTD(("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
- rxbd->length, rxbd->status, rxbd->addr[0], rxbd->addr[1]));
+ debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]);
+ debug("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ rxbd->length, rxbd->status, rxbd->addr[0], rxbd->addr[1]);
/* advance state */
state->tx_buf += txbd->length;
int n, i, b, rxcnt = 0, rxtimeo = 0, txcnt = 0, txtimeo = 0, rc = 0;
uint dpaddr;
- PRINTD(("[I2C] i2c_doio\n"));
+ debug("[I2C] i2c_doio\n");
if (state->tx_idx <= 0 && state->rx_idx <= 0) {
- PRINTD(("[I2C] No I/O is queued\n"));
+ debug("[I2C] No I/O is queued\n");
return I2CERR_QUEUE_EMPTY;
}
- dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
iip = (iic_t *)&immap->im_dprambase[dpaddr];
iip->iic_rbptr = iip->iic_rbase;
iip->iic_tbptr = iip->iic_tbase;
/* Enable I2C */
- PRINTD(("[I2C] Enabling I2C...\n"));
+ debug("[I2C] Enabling I2C...\n");
i2c->i2c_i2mod |= 0x01;
/* Begin transmission */
txbd--; /* wait until last in list is done */
- PRINTD(("[I2C] Transmitting...(txbd=0x%08lx)\n",
- (ulong) txbd));
+ debug("[I2C] Transmitting...(txbd=0x%08lx)\n",
+ (ulong) txbd);
udelay(START_DELAY_US); /* give it time to start */
while ((txbd->status & BD_SC_READY) && (++txcnt < txtimeo)) {
rxbd--; /* wait until last in list is done */
- PRINTD(("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong) rxbd));
+ debug("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong) rxbd);
udelay(START_DELAY_US); /* give it time to start */
while ((rxbd->status & BD_SC_EMPTY) && (++rxcnt < rxtimeo)) {
int i2c_set_bus_num(unsigned int bus)
{
-#if defined(CONFIG_I2C_MUX)
- if (bus < CONFIG_SYS_MAX_I2C_BUS) {
- i2c_bus_num = bus;
- } else {
- int ret;
-
- ret = i2x_mux_select_mux(bus);
- if (ret == 0)
- i2c_bus_num = bus;
- else
- return ret;
- }
-#else
if (bus >= CONFIG_SYS_MAX_I2C_BUS)
return -1;
i2c_bus_num = bus;
-#endif
return 0;
}
projects / oweals / u-boot.git / blobdiff