lkml.org 
[lkml]   [2019]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 11/19] spi: tegra20-sflash: use to new `spi_transfer_delay_exec`
Date
This conversion to the spi_transfer_delay_exec() helper is not
straightforward, as it seems that when a delay is present, the controller
issues a command, and then a delay is followed.

This change adds support for the new `delay` field which is of type
`spi_delay` and keeps backwards compatibility with the old `delay_usecs`
field.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
drivers/spi/spi-tegra20-sflash.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index cd714a4f52c6..ff1933e55830 100644
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -341,10 +341,11 @@ static int tegra_sflash_transfer_one_message(struct spi_master *master,
goto exit;
}
msg->actual_length += xfer->len;
- if (xfer->cs_change && xfer->delay_usecs) {
+ if (xfer->cs_change &&
+ (xfer->delay_usecs || xfer->delay.value)) {
tegra_sflash_writel(tsd, tsd->def_command_reg,
SPI_COMMAND);
- udelay(xfer->delay_usecs);
+ spi_transfer_delay_exec(xfer);
}
}
ret = 0;
--
2.20.1
\
 
 \ /
  Last update: 2019-09-26 12:53    [W:0.150 / U:0.900 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site