From: Heiko Schocher <hs@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] video, formike: change tag/val write
Date: Tue, 22 Oct 2013 11:06:24 +0200 [thread overview]
Message-ID: <1382432784-22687-1-git-send-email-hs@denx.de> (raw)
write first the "tag" 8 bit value and then the "val" 8-bit
to the display.
Tested on the rut board.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
---
drivers/video/formike.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/video/formike.c b/drivers/video/formike.c
index b9b6822..1383158 100644
--- a/drivers/video/formike.c
+++ b/drivers/video/formike.c
@@ -27,10 +27,11 @@ static int spi_write_tag_val(struct spi_slave *spi, unsigned char tag,
int ret;
buf[0] = tag;
- buf[1] = val;
- flags |= SPI_XFER_END;
+ ret = spi_xfer(spi, 8, buf, NULL, flags);
+ buf[0] = val;
+ flags = SPI_XFER_END;
+ ret = spi_xfer(spi, 8, buf, NULL, flags);
- ret = spi_xfer(spi, 16, buf, NULL, flags);
#ifdef KWH043ST20_F01_SPI_DEBUG
printf("spi_write_tag_val: tag=%02X, val=%02X ret: %d\n",
tag, val, ret);
--
1.8.3.1
next reply other threads:[~2013-10-22 9:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-22 9:06 Heiko Schocher [this message]
2013-10-30 9:50 ` [U-Boot] [PATCH] video, formike: change tag/val write Anatolij Gustschin
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