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spi: tegra114: change format for spi_set_cs_timing() function

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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>
This commit is contained in:
Alexandru Ardelean
2019-09-26 13:51:42 +03:00
committed by Mark Brown
parent 8e319dd5f1
commit 8105936684
3 changed files with 36 additions and 11 deletions
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9
include/linux/spi/spi.h
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@@ -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);