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authorAlexandru Ardelean <alexandru.ardelean@analog.com>2019-09-26 13:51:42 +0300
committerMark Brown <broonie@kernel.org>2019-10-15 11:45:49 +0100
commit8105936684681195d9073880b06a123b2e316811 (patch)
tree4b28c763ded1dc5f7fce400c69bf78f5eb865ac0 /include/linux/spi/spi.h
parent8e319dd5f1ebbc1fffa9e550b2a643cbce7515b1 (diff)
spi: tegra114: change format for `spi_set_cs_timing()` function
The initial version of `spi_set_cs_timing()` was implemented with consideration only for clock-cycles as delay. For cases like `CS setup` time, it's sometimes needed that micro-seconds (or nano-seconds) are required, or sometimes even longer delays, for cases where the device needs a little longer to start transferring that after CS is asserted. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20190926105147.7839-15-alexandru.ardelean@analog.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/spi/spi.h')
-rw-r--r--include/linux/spi/spi.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index fe5b85df2c79..f9b4ba2db08d 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -524,8 +524,8 @@ struct spi_controller {
* to configure specific CS timing through spi_set_cs_timing() after
* spi_setup().
*/
- void (*set_cs_timing)(struct spi_device *spi, u8 setup_clk_cycles,
- u8 hold_clk_cycles, u8 inactive_clk_cycles);
+ int (*set_cs_timing)(struct spi_device *spi, struct spi_delay *setup,
+ struct spi_delay *hold, struct spi_delay *inactive);
/* bidirectional bulk transfers
*
@@ -1068,7 +1068,10 @@ static inline void spi_message_free(struct spi_message *m)
kfree(m);
}
-extern void spi_set_cs_timing(struct spi_device *spi, u8 setup, u8 hold, u8 inactive_dly);
+extern int spi_set_cs_timing(struct spi_device *spi,
+ struct spi_delay *setup,
+ struct spi_delay *hold,
+ struct spi_delay *inactive);
extern int spi_setup(struct spi_device *spi);
extern int spi_async(struct spi_device *spi, struct spi_message *message);