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| author | Martin Sperl <kernel@martin.sperl.org> | 2019-02-23 08:49:49 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-05-13 13:11:36 +0100 |
| commit | 5d7e2b5ed5858fe739d4cb8ad22dcce7bd9dbe7b (patch) | |
| tree | 6bd17939600e1d69903d15c151b96a68f2b94b5d /include/linux/spi | |
| parent | e727d4cbc785e9c1b4d239eef274dc63bc1aff24 (diff) | |
| download | lwn-5d7e2b5ed5858fe739d4cb8ad22dcce7bd9dbe7b.tar.gz lwn-5d7e2b5ed5858fe739d4cb8ad22dcce7bd9dbe7b.zip | |
spi: core: allow reporting the effectivly used speed_hz for a transfer
Provide a means for the spi bus driver to report the effectively used
spi clock frequency used for each spi_transfer.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/spi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index f55b20254612..d0c5ba746e01 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -745,6 +745,9 @@ extern void spi_res_release(struct spi_controller *ctlr, * (set by bits_per_word) transmission. * @word_delay: clock cycles to inter word delay after each word size * (set by bits_per_word) transmission. + * @effective_speed_hz: the effective SCK-speed that was used to + * transfer this transfer. Set to 0 if the spi bus driver does + * not support it. * @transfer_list: transfers are sequenced through @spi_message.transfers * @tx_sg: Scatterlist for transmit, currently not for client use * @rx_sg: Scatterlist for receive, currently not for client use @@ -835,6 +838,8 @@ struct spi_transfer { u32 speed_hz; u16 word_delay; + u32 effective_speed_hz; + struct list_head transfer_list; }; |