* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.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 <mpc5xxx.h>
#include <i2c.h>
+#if !defined(CONFIG_I2C_MULTI_BUS)
#if (CONFIG_SYS_I2C_MODULE == 2)
#define I2C_BASE MPC5XXX_I2C2
#elif (CONFIG_SYS_I2C_MODULE == 1)
#else
#error CONFIG_SYS_I2C_MODULE is not properly configured
#endif
+#else
+static unsigned int i2c_bus_num __attribute__ ((section (".data"))) =
+ CONFIG_SYS_SPD_BUS_NUM;
+static unsigned int i2c_bus_speed[2] = {CONFIG_SYS_I2C_SPEED,
+ CONFIG_SYS_I2C_SPEED};
+
+static const unsigned long i2c_dev[2] = {
+ MPC5XXX_I2C1,
+ MPC5XXX_I2C2,
+};
+
+#define I2C_BASE ((struct mpc5xxx_i2c *)i2c_dev[i2c_bus_num])
+#endif
#define I2C_TIMEOUT 6667
#define I2C_RETRIES 3
status = mpc_reg_in(®s->msr);
while (timeout-- && (status & I2C_BB)) {
-#if 1
- volatile int temp;
mpc_reg_out(®s->mcr, I2C_STA, I2C_STA);
- temp = mpc_reg_in(®s->mdr);
+ (void)mpc_reg_in(®s->mdr);
mpc_reg_out(®s->mcr, 0, I2C_STA);
mpc_reg_out(®s->mcr, 0, 0);
mpc_reg_out(®s->mcr, I2C_EN, 0);
-#endif
udelay(15);
status = mpc_reg_in(®s->msr);
}
{126, 128}
};
- ipb = gd->ipb_clk;
+ ipb = gd->arch.ipb_clk;
for (i = 7; i >= 0; i--) {
for (j = 7; j >= 0; j--) {
scl = 2 * (scltap[j].scl2tap +
if (gd->flags & GD_FLG_RELOC) {
fdr = divider;
} else {
- if (gd->have_console)
- printf("%ld kHz, ", best_speed / 1000);
+ printf("%ld kHz, ", best_speed / 1000);
return divider;
}
}
xaddr[3] = addr & 0xFF;
if (wait_for_bb()) {
- if (gd->have_console)
- printf("i2c_read: bus is busy\n");
+ printf("i2c_read: bus is busy\n");
goto Done;
}
mpc_reg_out(®s->mcr, I2C_STA, I2C_STA);
if (do_address(chip, 0)) {
- if (gd->have_console)
- printf("i2c_read: failed to address chip\n");
+ printf("i2c_read: failed to address chip\n");
goto Done;
}
if (send_bytes(chip, &xaddr[4-alen], alen)) {
- if (gd->have_console)
- printf("i2c_read: send_bytes failed\n");
+ printf("i2c_read: send_bytes failed\n");
goto Done;
}
mpc_reg_out(®s->mcr, I2C_RSTA, I2C_RSTA);
if (do_address(chip, 1)) {
- if (gd->have_console)
- printf("i2c_read: failed to address chip\n");
+ printf("i2c_read: failed to address chip\n");
goto Done;
}
if (receive_bytes(chip, (char *)buf, len)) {
- if (gd->have_console)
- printf("i2c_read: receive_bytes failed\n");
+ printf("i2c_read: receive_bytes failed\n");
goto Done;
}
xaddr[3] = addr & 0xFF;
if (wait_for_bb()) {
- if (gd->have_console)
- printf("i2c_write: bus is busy\n");
+ printf("i2c_write: bus is busy\n");
goto Done;
}
mpc_reg_out(®s->mcr, I2C_STA, I2C_STA);
if (do_address(chip, 0)) {
- if (gd->have_console)
- printf("i2c_write: failed to address chip\n");
+ printf("i2c_write: failed to address chip\n");
goto Done;
}
if (send_bytes(chip, &xaddr[4-alen], alen)) {
- if (gd->have_console)
- printf("i2c_write: send_bytes failed\n");
+ printf("i2c_write: send_bytes failed\n");
goto Done;
}
if (send_bytes(chip, (char *)buf, len)) {
- if (gd->have_console)
- printf("i2c_write: send_bytes failed\n");
+ printf("i2c_write: send_bytes failed\n");
goto Done;
}
return ret;
}
+#if defined(CONFIG_I2C_MULTI_BUS)
+int i2c_set_bus_num(unsigned int bus)
+{
+ if (bus > 1)
+ return -1;
+
+ i2c_bus_num = bus;
+ i2c_init(i2c_bus_speed[bus], CONFIG_SYS_I2C_SLAVE);
+ return 0;
+}
+
+int i2c_set_bus_speed(unsigned int speed)
+{
+ i2c_init(speed, CONFIG_SYS_I2C_SLAVE);
+ return 0;
+}
+
+unsigned int i2c_get_bus_num(void)
+{
+ return i2c_bus_num;
+}
+
+unsigned int i2c_get_bus_speed(void)
+{
+ return i2c_bus_speed[i2c_bus_num];
+}
+#endif
+
+
#endif /* CONFIG_HARD_I2C */