struct i2c_adapter adap;
struct clk *clk;
#ifdef CONFIG_I2C_PXA_SLAVE
- struct i2c_slave_client *slave;
+ struct i2c_client *slave;
#endif
unsigned int irqlogidx;
if (isr & ISR_BED) {
/* what should we do here? */
} else {
- int ret = 0;
+ u8 byte = 0;
if (i2c->slave != NULL)
- ret = i2c->slave->read(i2c->slave->data);
+ i2c_slave_event(i2c->slave, I2C_SLAVE_READ_PROCESSED,
+ &byte);
- writel(ret, _IDBR(i2c));
+ writel(byte, _IDBR(i2c));
writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c)); /* allow next byte */
}
}
static void i2c_pxa_slave_rxfull(struct pxa_i2c *i2c, u32 isr)
{
- unsigned int byte = readl(_IDBR(i2c));
+ u8 byte = readl(_IDBR(i2c));
if (i2c->slave != NULL)
- i2c->slave->write(i2c->slave->data, byte);
+ i2c_slave_event(i2c->slave, I2C_SLAVE_WRITE_RECEIVED, &byte);
writel(readl(_ICR(i2c)) | ICR_TB, _ICR(i2c));
}
dev_dbg(&i2c->adap.dev, "SAD, mode is slave-%cx\n",
(isr & ISR_RWM) ? 'r' : 't');
- if (i2c->slave != NULL)
- i2c->slave->event(i2c->slave->data,
- (isr & ISR_RWM) ? I2C_SLAVE_EVENT_START_READ : I2C_SLAVE_EVENT_START_WRITE);
+ if (i2c->slave != NULL) {
+ if (isr & ISR_RWM) {
+ u8 byte = 0;
+
+ i2c_slave_event(i2c->slave, I2C_SLAVE_READ_REQUESTED,
+ &byte);
+ writel(byte, _IDBR(i2c));
+ } else {
+ i2c_slave_event(i2c->slave, I2C_SLAVE_WRITE_REQUESTED,
+ NULL);
+ }
+ }
/*
* slave could interrupt in the middle of us generating a
dev_dbg(&i2c->adap.dev, "ISR: SSD (Slave Stop)\n");
if (i2c->slave != NULL)
- i2c->slave->event(i2c->slave->data, I2C_SLAVE_EVENT_STOP);
+ i2c_slave_event(i2c->slave, I2C_SLAVE_STOP, NULL);
if (i2c_debug > 2)
dev_dbg(&i2c->adap.dev, "ISR: SSD (Slave Stop) acked\n");
if (i2c->msg)
i2c_pxa_master_complete(i2c, I2C_RETRY);
}
+
+static int i2c_pxa_slave_reg(struct i2c_client *slave)
+{
+ struct pxa_i2c *i2c = slave->adapter->algo_data;
+
+ if (i2c->slave)
+ return -EBUSY;
+
+ if (!i2c->reg_isar)
+ return -EAFNOSUPPORT;
+
+ i2c->slave = slave;
+ i2c->slave_addr = slave->addr;
+
+ writel(i2c->slave_addr, _ISAR(i2c));
+
+ return 0;
+}
+
+static int i2c_pxa_slave_unreg(struct i2c_client *slave)
+{
+ struct pxa_i2c *i2c = slave->adapter->algo_data;
+
+ WARN_ON(!i2c->slave);
+
+ i2c->slave_addr = I2C_PXA_SLAVE_ADDR;
+ writel(i2c->slave_addr, _ISAR(i2c));
+
+ i2c->slave = NULL;
+
+ return 0;
+}
#else
static void i2c_pxa_slave_txempty(struct pxa_i2c *i2c, u32 isr)
{
static const struct i2c_algorithm i2c_pxa_algorithm = {
.master_xfer = i2c_pxa_xfer,
.functionality = i2c_pxa_functionality,
+#ifdef CONFIG_I2C_PXA_SLAVE
+ .reg_slave = i2c_pxa_slave_reg,
+ .unreg_slave = i2c_pxa_slave_unreg,
+#endif
};
static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
.master_xfer = i2c_pxa_pio_xfer,
.functionality = i2c_pxa_functionality,
+#ifdef CONFIG_I2C_PXA_SLAVE
+ .reg_slave = i2c_pxa_slave_reg,
+ .unreg_slave = i2c_pxa_slave_unreg,
+#endif
};
static const struct of_device_id i2c_pxa_dt_ids[] = {
i2c->highmode_enter = false;
if (plat) {
-#ifdef CONFIG_I2C_PXA_SLAVE
- i2c->slave_addr = plat->slave_addr;
- i2c->slave = plat->slave;
-#endif
i2c->adap.class = plat->class;
}