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drm/panel: s6e63m0: Simplify SPI writing 

This writing code is equivalent to the spi_write()
helper in the SPI framework. Insert a comment
that this will always work fine since SPI buffers
are in native endianness.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201110234653.2248594-2-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2020-11-11 00:46:49 +01:00
parent 8469391182
commit 49ef0c6d7d
1 changed files with 2 additions and 9 deletions
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11
drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
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@ -25,16 +25,9 @@ static int s6e63m0_spi_dcs_read(struct device *dev, const u8 cmd, u8 *data)
static int s6e63m0_spi_write_word(struct device *dev, u16 data)
{
struct spi_device *spi = to_spi_device(dev);
struct spi_transfer xfer = {
.len = 2,
.tx_buf = &data,
};
struct spi_message msg;
spi_message_init(&msg);
spi_message_add_tail(&xfer, &msg);
return spi_sync(spi, &msg);
/* SPI buffers are always in CPU order */
return spi_write(spi, &data, 2);
}
static int s6e63m0_spi_dcs_write(struct device *dev, const u8 *data, size_t len)