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added kernel module runtime parameter change (ioctls)

bug_fixes_integration_tx
David Michaeli 2023-06-08 08:47:58 +00:00
rodzic ff3ffb296e
commit cc786d6d82
2 zmienionych plików z 76 dodań i 0 usunięć
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70
driver/smi_stream_dev.c
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@ -421,6 +421,76 @@ static long smi_stream_ioctl(struct file *file, unsigned int cmd, unsigned long
break;
}
//-------------------------------
case SMI_STREAM_IOC_SET_FIFO_MULT:
{
int temp = (int)arg;
if (temp > 20 || temp < 2)
{
dev_err(inst->dev, "Parameter error: 2<fifo_mtu_multiplier<20, got %d", temp);
return -EINVAL;
}
dev_info(inst->dev, "Setting FIFO size multiplier to %d", temp);
fifo_mtu_multiplier = temp;
break;
}
//-------------------------------
case SMI_STREAM_IOC_SET_ADDR_DIR_OFFSET:
{
int temp = (int)arg;
if (temp > 4 || temp < -1)
{
dev_err(inst->dev, "Parameter error: 0<=addr_dir_offset<=4 or (-1 - unused), got %d", temp);
return -EINVAL;
}
dev_info(inst->dev, "Setting address direction indication offset to %d", temp);
addr_dir_offset = temp;
break;
}
//-------------------------------
case SMI_STREAM_IOC_SET_ADDR_CH_OFFSET:
{
int temp = (int)arg;
if (temp > 4 || temp < -1)
{
dev_err(inst->dev, "Parameter error: 0<=addr_ch_offset<=4 or (-1 - unused), got %d", temp);
return -EINVAL;
}
dev_info(inst->dev, "Setting address channel indication offset to %d", temp);
addr_ch_offset = temp;
break;
}
//-------------------------------
case SMI_STREAM_IOC_GET_FIFO_MULT:
{
dev_dbg(inst->dev, "Reading FIFO size multiplier of %d", fifo_mtu_multiplier);
if (copy_to_user((void *)arg, &fifo_mtu_multiplier, sizeof(fifo_mtu_multiplier)))
{
dev_err(inst->dev, "fifo_mtu_multiplier copy failed.");
}
break;
}
//-------------------------------
case SMI_STREAM_IOC_GET_ADDR_DIR_OFFSET:
{
dev_dbg(inst->dev, "Reading address direction indication offset of %d", addr_dir_offset);
if (copy_to_user((void *)arg, &addr_dir_offset, sizeof(addr_dir_offset)))
{
dev_err(inst->dev, "addr_dir_offset copy failed.");
}
break;
}
//-------------------------------
case SMI_STREAM_IOC_GET_ADDR_CH_OFFSET:
{
dev_dbg(inst->dev, "Reading address channel indication offset of %d", addr_ch_offset);
if (copy_to_user((void *)arg, &addr_ch_offset, sizeof(addr_ch_offset)))
{
dev_err(inst->dev, "addr_ch_offset copy failed.");
}
break;
}
//-------------------------------
default:
dev_err(inst->dev, "invalid ioctl cmd: %d", cmd);

6
driver/smi_stream_dev.h
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@ -99,5 +99,11 @@ struct bcm2835_smi_instance {
#define SMI_STREAM_IOC_GET_NATIVE_BUF_SIZE _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+1))
#define SMI_STREAM_IOC_SET_STREAM_STATUS _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+2))
#define SMI_STREAM_IOC_SET_STREAM_IN_CHANNEL _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+3))
#define SMI_STREAM_IOC_SET_FIFO_MULT _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+4))
#define SMI_STREAM_IOC_SET_ADDR_DIR_OFFSET _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+5))
#define SMI_STREAM_IOC_SET_ADDR_CH_OFFSET _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+6))
#define SMI_STREAM_IOC_GET_FIFO_MULT _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+7))
#define SMI_STREAM_IOC_GET_ADDR_DIR_OFFSET _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+8))
#define SMI_STREAM_IOC_GET_ADDR_CH_OFFSET _IO(BCM2835_SMI_IOC_MAGIC,(BCM2835_SMI_IOC_MAX+9))
#endif /* _SMI_STREAM_DEV_H_ */