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i2c: qcom-geni: Add trace events for Qualcomm GENI I2C driver

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Add trace event definitions for the Qualcomm GENI (Generic Interface)
I2C driver. These trace events enable runtime debugging and performance
analysis of I2C operations.

The trace events capture I2C clock configuration, interrupt status and
error code and message.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260703-add-tracepoints-for-qcom-geni-i2c-v2-2-e8bf8b178290@oss.qualcomm.com
This commit is contained in:
Praveen Talari 2026-07-03 20:38:10 +05:30 committed by Andi Shyti
parent d3de2edd75
commit f957616d55
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1 changed files with 14 additions and 0 deletions
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14
drivers/i2c/busses/i2c-qcom-geni.c
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@ -1,6 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
#define CREATE_TRACE_POINTS
#include <trace/events/qcom_geni_i2c.h>
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/dmaengine.h>
@ -225,6 +228,9 @@ static int qcom_geni_i2c_conf(struct geni_se *se, unsigned long freq)
val |= itr->t_low_cnt << LOW_COUNTER_SHFT;
val |= itr->t_cycle_cnt;
writel_relaxed(val, gi2c->se.base + SE_I2C_SCL_COUNTERS);
trace_geni_i2c_bus_setup(gi2c->se.dev, gi2c->clk_freq_out,
itr->clk_div, itr->t_high_cnt,
itr->t_low_cnt, itr->t_cycle_cnt);
return 0;
}
@ -258,6 +264,8 @@ static void geni_i2c_err(struct geni_i2c_dev *gi2c, int err)
dev_dbg(gi2c->se.dev, "len:%d, slv-addr:0x%x, RD/WR:%d\n",
gi2c->cur->len, gi2c->cur->addr, gi2c->cur->flags);
trace_geni_i2c_err(gi2c->se.dev, gi2c_log[err].err, gi2c_log[err].msg);
switch (err) {
case GENI_ABORT_DONE:
case ADDR_NACK:
@ -301,6 +309,8 @@ static irqreturn_t geni_i2c_irq(int irq, void *dev)
dma = readl_relaxed(base + SE_GENI_DMA_MODE_EN);
cur = gi2c->cur;
trace_geni_i2c_irq(gi2c->se.dev, m_stat, rx_st, dm_tx_st, dm_rx_st);
if (!cur ||
m_stat & (M_CMD_FAILURE_EN | M_CMD_ABORT_EN) ||
dm_rx_st & (DM_I2C_CB_ERR)) {
@ -820,6 +830,10 @@ static int geni_i2c_gpi_xfer(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], i
peripheral.set_config = 1;
peripheral.multi_msg = false;
trace_geni_i2c_bus_setup(gi2c->se.dev, gi2c->clk_freq_out,
itr->clk_div, itr->t_high_cnt,
itr->t_low_cnt, itr->t_cycle_cnt);
gi2c->num_msgs = num;
gi2c->is_tx_multi_desc_xfer = false;