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/* SPDX-License-Identifier: BSD-3-Clause */
#include <console/console.h>
#include <device/i2c_simple.h>
#include <string.h>
#include <soc/blsp.h>
#include <soc/qup.h>
#include <soc/gpio.h>
static qup_config_t blsp1_qup0_config = {
QUP_MINICORE_I2C_MASTER,
400000,
19200000,
QUP_MODE_BLOCK,
0
};
static qup_config_t blsp1_qup1_config = {
QUP_MINICORE_I2C_MASTER,
400000,
19200000,
QUP_MODE_BLOCK,
0
};
static qup_config_t blsp1_qup2_config = {
QUP_MINICORE_I2C_MASTER,
400000,
19200000,
QUP_MODE_BLOCK,
0
};
static qup_config_t blsp1_qup3_config = {
QUP_MINICORE_I2C_MASTER,
400000,
19200000,
QUP_MODE_BLOCK,
0
};
static int i2c_read(uint32_t gsbi_id, uint8_t slave,
uint8_t *data, int data_len)
{
qup_data_t obj;
qup_return_t qup_ret = 0;
memset(&obj, 0, sizeof(obj));
obj.protocol = QUP_MINICORE_I2C_MASTER;
obj.p.iic.addr = slave;
obj.p.iic.data_len = data_len;
obj.p.iic.data = data;
qup_ret = qup_recv_data(gsbi_id, &obj);
if (qup_ret != QUP_SUCCESS)
return 1;
else
return 0;
}
static int i2c_write(uint32_t gsbi_id, uint8_t slave,
uint8_t *data, int data_len, uint8_t stop_seq)
{
qup_data_t obj;
qup_return_t qup_ret = 0;
memset(&obj, 0, sizeof(obj));
obj.protocol = QUP_MINICORE_I2C_MASTER;
obj.p.iic.addr = slave;
obj.p.iic.data_len = data_len;
obj.p.iic.data = data;
qup_ret = qup_send_data(gsbi_id, &obj, stop_seq);
if (qup_ret != QUP_SUCCESS)
return 1;
else
return 0;
}
static int i2c_init(blsp_qup_id_t id)
{
qup_config_t *qup_config;
switch (id) {
case BLSP_QUP_ID_0:
qup_config = &blsp1_qup0_config;
break;
case BLSP_QUP_ID_1:
qup_config = &blsp1_qup1_config;
break;
case BLSP_QUP_ID_2:
qup_config = &blsp1_qup2_config;
break;
case BLSP_QUP_ID_3:
qup_config = &blsp1_qup3_config;
break;
default:
printk(BIOS_ERR, "QUP configuration not defined for BLSP%d.\n",
id);
return 1;
}
if (qup_config->initialized)
return 0;
if (blsp_i2c_init(id)) {
printk(BIOS_ERR, "failed to initialize blsp\n");
return 1;
}
if (qup_init(id, qup_config)) {
printk(BIOS_ERR, "failed to initialize qup\n");
return 1;
}
if (qup_reset_i2c_master_status(id)) {
printk(BIOS_ERR, "failed to reset i2c master status\n");
return 1;
}
qup_config->initialized = 1;
return 0;
}
int platform_i2c_transfer(unsigned int bus, struct i2c_msg *segments,
int seg_count)
{
struct i2c_msg *seg = segments;
int ret = 0;
if (i2c_init(bus))
return 1;
while (!ret && seg_count--) {
if (seg->flags & I2C_M_RD)
ret = i2c_read(bus, seg->slave, seg->buf, seg->len);
else
ret = i2c_write(bus, seg->slave, seg->buf, seg->len,
(seg_count ? 0 : 1));
seg++;
}
if (ret) {
qup_set_state(bus, QUP_STATE_RESET);
return 1;
}
return 0;
}
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