drm/panel: s6e63m0: Simplify SPI writing (49ef0c6d) · Commits · 戴 / test

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

drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c

+2 −9

Original line number	Diff line number	Diff line
		@@ -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)

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