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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-07-14 03:37:53 +0200 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-08-01 10:29:58 +0200 |
| commit | 6b00e72e4bee08048379a6365251b195b8a946d1 (patch) | |
| tree | 68b504f8720ca7a014c8ad7eccc4a97ce41f3547 | |
| parent | dt-bindings: display: st7789v: bound the number of Rx data lines (diff) | |
| download | linux-6b00e72e4bee08048379a6365251b195b8a946d1.tar.xz linux-6b00e72e4bee08048379a6365251b195b8a946d1.zip | |
drm/panel: sitronix-st7789v: Use 9 bits per spi word by default
The Sitronix controller expects 9-bit words, provide this as default at
probe time rather than specifying this in each and every access.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-17-sre@kernel.org
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c index 55e475471f43..33bdf9ee4085 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -142,7 +142,6 @@ static int st7789v_spi_write(struct st7789v *ctx, enum st7789v_prefix prefix, u16 txbuf = ((prefix & 1) << 8) | data; xfer.tx_buf = &txbuf; - xfer.bits_per_word = 9; xfer.len = sizeof(txbuf); return spi_sync_transfer(ctx->spi, &xfer, 1); @@ -436,6 +435,11 @@ static int st7789v_probe(struct spi_device *spi) spi_set_drvdata(spi, ctx); ctx->spi = spi; + spi->bits_per_word = 9; + ret = spi_setup(spi); + if (ret < 0) + return dev_err_probe(&spi->dev, ret, "Failed to setup spi\n"); + ctx->info = device_get_match_data(&spi->dev); drm_panel_init(&ctx->panel, dev, &st7789v_drm_funcs, |