9e264f3f85
Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> Acked-by: Heiko Stuebner <heiko@sntech.de> # Rockchip drivers Reviewed-by: Michal Simek <michal.simek@amd.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> # Aspeed driver Reviewed-by: Dhruva Gole <d-gole@ti.com> # SPI Cadence QSPI Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> # spi-stm32-qspi Acked-by: William Zhang <william.zhang@broadcom.com> # bcm63xx-hsspi driver Reviewed-by: Serge Semin <fancer.lancer@gmail.com> # DW SSI part Link: https://lore.kernel.org/r/167847070432.26.15076794204368669839@mailman-core.alsa-project.org Signed-off-by: Mark Brown <broonie@kernel.org>
240 lines
5.9 KiB
C
240 lines
5.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM spi
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#if !defined(_TRACE_SPI_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_SPI_H
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#include <linux/ktime.h>
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#include <linux/tracepoint.h>
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DECLARE_EVENT_CLASS(spi_controller,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller),
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TP_STRUCT__entry(
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__field( int, bus_num )
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),
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TP_fast_assign(
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__entry->bus_num = controller->bus_num;
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),
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TP_printk("spi%d", (int)__entry->bus_num)
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);
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DEFINE_EVENT(spi_controller, spi_controller_idle,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller)
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);
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DEFINE_EVENT(spi_controller, spi_controller_busy,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller)
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);
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TRACE_EVENT(spi_setup,
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TP_PROTO(struct spi_device *spi, int status),
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TP_ARGS(spi, status),
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TP_STRUCT__entry(
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__field(int, bus_num)
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__field(int, chip_select)
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__field(unsigned long, mode)
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__field(unsigned int, bits_per_word)
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__field(unsigned int, max_speed_hz)
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__field(int, status)
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),
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TP_fast_assign(
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__entry->bus_num = spi->controller->bus_num;
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__entry->chip_select = spi_get_chipselect(spi, 0);
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__entry->mode = spi->mode;
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__entry->bits_per_word = spi->bits_per_word;
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__entry->max_speed_hz = spi->max_speed_hz;
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__entry->status = status;
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),
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TP_printk("spi%d.%d setup mode %lu, %s%s%s%s%u bits/w, %u Hz max --> %d",
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__entry->bus_num, __entry->chip_select,
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(__entry->mode & SPI_MODE_X_MASK),
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(__entry->mode & SPI_CS_HIGH) ? "cs_high, " : "",
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(__entry->mode & SPI_LSB_FIRST) ? "lsb, " : "",
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(__entry->mode & SPI_3WIRE) ? "3wire, " : "",
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(__entry->mode & SPI_LOOP) ? "loopback, " : "",
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__entry->bits_per_word, __entry->max_speed_hz,
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__entry->status)
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);
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TRACE_EVENT(spi_set_cs,
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TP_PROTO(struct spi_device *spi, bool enable),
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TP_ARGS(spi, enable),
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TP_STRUCT__entry(
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__field(int, bus_num)
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__field(int, chip_select)
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__field(unsigned long, mode)
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__field(bool, enable)
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),
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TP_fast_assign(
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__entry->bus_num = spi->controller->bus_num;
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__entry->chip_select = spi_get_chipselect(spi, 0);
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__entry->mode = spi->mode;
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__entry->enable = enable;
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),
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TP_printk("spi%d.%d %s%s",
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__entry->bus_num, __entry->chip_select,
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__entry->enable ? "activate" : "deactivate",
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(__entry->mode & SPI_CS_HIGH) ? ", cs_high" : "")
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);
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DECLARE_EVENT_CLASS(spi_message,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_message *, msg )
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = spi_get_chipselect(msg->spi, 0);
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__entry->msg = msg;
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),
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TP_printk("spi%d.%d %p", (int)__entry->bus_num,
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(int)__entry->chip_select,
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(struct spi_message *)__entry->msg)
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);
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DEFINE_EVENT(spi_message, spi_message_submit,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg)
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);
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DEFINE_EVENT(spi_message, spi_message_start,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg)
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);
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TRACE_EVENT(spi_message_done,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_message *, msg )
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__field( unsigned, frame )
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__field( unsigned, actual )
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = spi_get_chipselect(msg->spi, 0);
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__entry->msg = msg;
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__entry->frame = msg->frame_length;
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__entry->actual = msg->actual_length;
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),
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TP_printk("spi%d.%d %p len=%u/%u", (int)__entry->bus_num,
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(int)__entry->chip_select,
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(struct spi_message *)__entry->msg,
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(unsigned)__entry->actual, (unsigned)__entry->frame)
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);
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/*
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* consider a buffer valid if non-NULL and if it doesn't match the dummy buffer
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* that only exist to work with controllers that have SPI_CONTROLLER_MUST_TX or
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* SPI_CONTROLLER_MUST_RX.
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*/
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#define spi_valid_txbuf(msg, xfer) \
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(xfer->tx_buf && xfer->tx_buf != msg->spi->controller->dummy_tx)
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#define spi_valid_rxbuf(msg, xfer) \
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(xfer->rx_buf && xfer->rx_buf != msg->spi->controller->dummy_rx)
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DECLARE_EVENT_CLASS(spi_transfer,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_transfer *, xfer )
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__field( int, len )
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__dynamic_array(u8, rx_buf,
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spi_valid_rxbuf(msg, xfer) ?
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(xfer->len < 64 ? xfer->len : 64) : 0)
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__dynamic_array(u8, tx_buf,
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spi_valid_txbuf(msg, xfer) ?
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(xfer->len < 64 ? xfer->len : 64) : 0)
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = spi_get_chipselect(msg->spi, 0);
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__entry->xfer = xfer;
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__entry->len = xfer->len;
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if (spi_valid_txbuf(msg, xfer))
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memcpy(__get_dynamic_array(tx_buf),
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xfer->tx_buf, __get_dynamic_array_len(tx_buf));
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if (spi_valid_rxbuf(msg, xfer))
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memcpy(__get_dynamic_array(rx_buf),
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xfer->rx_buf, __get_dynamic_array_len(rx_buf));
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),
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TP_printk("spi%d.%d %p len=%d tx=[%*phD] rx=[%*phD]",
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__entry->bus_num, __entry->chip_select,
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__entry->xfer, __entry->len,
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__get_dynamic_array_len(tx_buf), __get_dynamic_array(tx_buf),
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__get_dynamic_array_len(rx_buf), __get_dynamic_array(rx_buf))
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);
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DEFINE_EVENT(spi_transfer, spi_transfer_start,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer)
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);
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DEFINE_EVENT(spi_transfer, spi_transfer_stop,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer)
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);
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#endif /* _TRACE_POWER_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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