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From: Sascha Hauer <s.hauer@pengutronix.de>
To: "open list:BAREBOX" <barebox@lists.infradead.org>
Subject: [PATCH v2 1/5] spi: spi-gpio: actually delay in spidelay()
Date: Thu, 26 Sep 2024 13:21:37 +0200	[thread overview]
Message-ID: <20240926-spi-gpio-v2-1-3bf7b511c8c0@pengutronix.de> (raw)
In-Reply-To: <20240926-spi-gpio-v2-0-3bf7b511c8c0@pengutronix.de>

spidelay() currently only is a no-op dummy function. Actually delay in
this function to avoid spi-gpio being faster than specified.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/spi/gpio_spi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/gpio_spi.c b/drivers/spi/gpio_spi.c
index e5664df3fe..dc9f46ca45 100644
--- a/drivers/spi/gpio_spi.c
+++ b/drivers/spi/gpio_spi.c
@@ -48,7 +48,10 @@ static inline int getmiso(const struct spi_device *spi)
 	return !!gpio_get_value(priv->data->miso);
 }
 
-#define spidelay(nsecs) do { } while (0)
+static inline void spidelay(unsigned int nsecs)
+{
+	ndelay(nsecs);
+}
 
 #include "spi-bitbang-txrx.h"
 

-- 
2.39.5




  reply	other threads:[~2024-09-26 11:24 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-26 11:21 [PATCH v2 0/5] spi-gpio updates Sascha Hauer
2024-09-26 11:21 ` Sascha Hauer [this message]
2024-09-26 11:21 ` [PATCH v2 2/5] spi: spi-gpio: support different word widths Sascha Hauer
2024-09-26 11:21 ` [PATCH v2 3/5] spi: spi-gpio: switch to new gpio binding Sascha Hauer
2024-09-26 11:21 ` [PATCH v2 4/5] spi: spi-gpio: deassert CS during setup Sascha Hauer
2024-09-26 11:21 ` [PATCH v2 5/5] spi: spi-gpio: switch to gpiod api Sascha Hauer
2024-09-27 10:40 ` [PATCH v2 0/5] spi-gpio updates Sascha Hauer

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