Add trace event support to the Qualcomm GENI I2C driver to enable detailed runtime debugging and analysis.
The trace events capture I2C clock configuration, interrupt status and error code and message. Signed-off-by: Praveen Talari <[email protected]> --- include/trace/events/qcom_geni_i2c.h | 82 ++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/include/trace/events/qcom_geni_i2c.h b/include/trace/events/qcom_geni_i2c.h new file mode 100644 index 000000000000..c7e7984f3620 --- /dev/null +++ b/include/trace/events/qcom_geni_i2c.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM qcom_geni_i2c + +#if !defined(_TRACE_QCOM_GENI_I2C_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_QCOM_GENI_I2C_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(geni_i2c_bus_setup, + TP_PROTO(struct device *dev, u32 clk_freq, u8 clk_div, + u8 t_high_cnt, u8 t_low_cnt, u8 t_cycle_cnt), + TP_ARGS(dev, clk_freq, clk_div, t_high_cnt, t_low_cnt, t_cycle_cnt), + + TP_STRUCT__entry(__string(name, dev_name(dev)) + __field(u32, clk_freq) + __field(u8, clk_div) + __field(u8, t_high_cnt) + __field(u8, t_low_cnt) + __field(u8, t_cycle_cnt) + ), + + TP_fast_assign(__assign_str(name); + __entry->clk_freq = clk_freq; + __entry->clk_div = clk_div; + __entry->t_high_cnt = t_high_cnt; + __entry->t_low_cnt = t_low_cnt; + __entry->t_cycle_cnt = t_cycle_cnt; + ), + + TP_printk("%s: clk_freq=%u clk_div=%u t_high=%u t_low=%u t_cycle=%u", + __get_str(name), __entry->clk_freq, __entry->clk_div, + __entry->t_high_cnt, __entry->t_low_cnt, + __entry->t_cycle_cnt) +); + +TRACE_EVENT(geni_i2c_irq, + TP_PROTO(struct device *dev, u32 m_stat, u32 rx_st, + u32 dm_tx_st, u32 dm_rx_st), + TP_ARGS(dev, m_stat, rx_st, dm_tx_st, dm_rx_st), + + TP_STRUCT__entry(__string(name, dev_name(dev)) + __field(u32, m_stat) + __field(u32, rx_st) + __field(u32, dm_tx_st) + __field(u32, dm_rx_st) + ), + + TP_fast_assign(__assign_str(name); + __entry->m_stat = m_stat; + __entry->rx_st = rx_st; + __entry->dm_tx_st = dm_tx_st; + __entry->dm_rx_st = dm_rx_st; + ), + + TP_printk("%s: m_stat=0x%08x rx_st=0x%08x dm_tx=0x%08x dm_rx=0x%08x", + __get_str(name), __entry->m_stat, __entry->rx_st, + __entry->dm_tx_st, __entry->dm_rx_st) +); + +TRACE_EVENT(geni_i2c_err, + TP_PROTO(struct device *dev, int err, const char *msg), + TP_ARGS(dev, err, msg), + + TP_STRUCT__entry(__string(name, dev_name(dev)) + __field(int, err) + __string(msg, msg) + ), + + TP_fast_assign(__assign_str(name); + __entry->err = err; + __assign_str(msg); + ), + + TP_printk("%s: err=%d msg=%s", + __get_str(name), __entry->err, __get_str(msg)) +); + +#endif /* _TRACE_QCOM_GENI_I2C_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> -- 2.34.1
