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| author | Linus Walleij <linus.walleij@linaro.org> | 2020-11-11 00:46:49 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-11-16 00:46:50 +0100 |
| commit | 49ef0c6d7dd2bdc3cee3dc004545a373742cd752 (patch) | |
| tree | 00919814ac8405e39353be1dc8702c1963304296 /drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c | |
| parent | 846939118270863bc074fb734a1c2e0690ddb444 (diff) | |
| download | linux-49ef0c6d7dd2bdc3cee3dc004545a373742cd752.tar.bz2 | |
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
Diffstat (limited to 'drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c index d298d780220d..75f00ed4810b 100644 --- a/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c @@ -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) |