static enum fpga_mgr_states alt_pr_fpga_state()

in altera-pr-ip-core.c [32:75]

• 34 lines of code
• 7 McCabe index (conditional complexity)

static enum fpga_mgr_states alt_pr_fpga_state(struct fpga_manager *mgr)
{
	struct alt_pr_priv *priv = mgr->priv;
	const char *err = "unknown";
	enum fpga_mgr_states ret = FPGA_MGR_STATE_UNKNOWN;
	u32 val;

	val = readl(priv->reg_base + ALT_PR_CSR_OFST);

	val &= ALT_PR_CSR_STATUS_MSK;

	switch (val) {
	case ALT_PR_CSR_STATUS_NRESET:
		return FPGA_MGR_STATE_RESET;

	case ALT_PR_CSR_STATUS_PR_ERR:
		err = "pr error";
		ret = FPGA_MGR_STATE_WRITE_ERR;
		break;

	case ALT_PR_CSR_STATUS_CRC_ERR:
		err = "crc error";
		ret = FPGA_MGR_STATE_WRITE_ERR;
		break;

	case ALT_PR_CSR_STATUS_BAD_BITS:
		err = "bad bits";
		ret = FPGA_MGR_STATE_WRITE_ERR;
		break;

	case ALT_PR_CSR_STATUS_PR_IN_PROG:
		return FPGA_MGR_STATE_WRITE;

	case ALT_PR_CSR_STATUS_PR_SUCCESS:
		return FPGA_MGR_STATE_OPERATING;

	default:
		break;
	}

	dev_err(&mgr->dev, "encountered error code %d (%s) in %s()\n",
		val, err, __func__);
	return ret;
}