static int mhi_debugfs_regdump_show()

in mhi/core/debugfs.c [169:229]

• 55 lines of code
• 5 McCabe index (conditional complexity)

static int mhi_debugfs_regdump_show(struct seq_file *m, void *d)
{
	struct mhi_controller *mhi_cntrl = m->private;
	enum mhi_state state;
	enum mhi_ee_type ee;
	int i, ret = -EIO;
	u32 val;
	void __iomem *mhi_base = mhi_cntrl->regs;
	void __iomem *bhi_base = mhi_cntrl->bhi;
	void __iomem *bhie_base = mhi_cntrl->bhie;
	void __iomem *wake_db = mhi_cntrl->wake_db;
	struct {
		const char *name;
		int offset;
		void __iomem *base;
	} regs[] = {
		{ "MHI_REGLEN", MHIREGLEN, mhi_base},
		{ "MHI_VER", MHIVER, mhi_base},
		{ "MHI_CFG", MHICFG, mhi_base},
		{ "MHI_CTRL", MHICTRL, mhi_base},
		{ "MHI_STATUS", MHISTATUS, mhi_base},
		{ "MHI_WAKE_DB", 0, wake_db},
		{ "BHI_EXECENV", BHI_EXECENV, bhi_base},
		{ "BHI_STATUS", BHI_STATUS, bhi_base},
		{ "BHI_ERRCODE", BHI_ERRCODE, bhi_base},
		{ "BHI_ERRDBG1", BHI_ERRDBG1, bhi_base},
		{ "BHI_ERRDBG2", BHI_ERRDBG2, bhi_base},
		{ "BHI_ERRDBG3", BHI_ERRDBG3, bhi_base},
		{ "BHIE_TXVEC_DB", BHIE_TXVECDB_OFFS, bhie_base},
		{ "BHIE_TXVEC_STATUS", BHIE_TXVECSTATUS_OFFS, bhie_base},
		{ "BHIE_RXVEC_DB", BHIE_RXVECDB_OFFS, bhie_base},
		{ "BHIE_RXVEC_STATUS", BHIE_RXVECSTATUS_OFFS, bhie_base},
		{ NULL },
	};

	if (!MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state))
		return ret;

	seq_printf(m, "Host PM state: %s Device state: %s EE: %s\n",
		   to_mhi_pm_state_str(mhi_cntrl->pm_state),
		   TO_MHI_STATE_STR(mhi_cntrl->dev_state),
		   TO_MHI_EXEC_STR(mhi_cntrl->ee));

	state = mhi_get_mhi_state(mhi_cntrl);
	ee = mhi_get_exec_env(mhi_cntrl);
	seq_printf(m, "Device EE: %s state: %s\n", TO_MHI_EXEC_STR(ee),
		   TO_MHI_STATE_STR(state));

	for (i = 0; regs[i].name; i++) {
		if (!regs[i].base)
			continue;
		ret = mhi_read_reg(mhi_cntrl, regs[i].base, regs[i].offset,
				   &val);
		if (ret)
			continue;

		seq_printf(m, "%s: 0x%x\n", regs[i].name, val);
	}

	return 0;
}