Re: [PATCH v2 2/2] Revert "drm/bridge: chrontel-ch7033: Add byteswap order setting"

From: Laurent Pinchart
Date: Mon Sep 19 2022 - 06:53:59 EST


Hi Rob,

Thank you for the patch.

On Mon, Sep 19, 2022 at 12:20:09PM +0200, Robert Foss wrote:
> Revert this patch since it depends on devicetree functionality that
> previously has been reverted in the below commit.
>
> commit e798ba3374a1 ("Revert "dt-bindings: Add byteswap order to chrontel ch7033"")
>
> This reverts commit ce9564cfc9aea65e68eb343c599317633bc2321a.
>
> Fixes: 8c9c40ec8344 ("Revert "drm/bridge: ti-sn65dsi86: Implement bridge connector operations for DP"")

I'm not sure this Fixes tag is meaningful here. Apart from that,

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/chrontel-ch7033.c | 15 ++-------------
> 1 file changed, 2 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/chrontel-ch7033.c b/drivers/gpu/drm/bridge/chrontel-ch7033.c
> index c5719908ce2d..ba060277c3fd 100644
> --- a/drivers/gpu/drm/bridge/chrontel-ch7033.c
> +++ b/drivers/gpu/drm/bridge/chrontel-ch7033.c
> @@ -68,7 +68,6 @@ enum {
> BYTE_SWAP_GBR = 3,
> BYTE_SWAP_BRG = 4,
> BYTE_SWAP_BGR = 5,
> - BYTE_SWAP_MAX = 6,
> };
>
> /* Page 0, Register 0x19 */
> @@ -356,8 +355,6 @@ static void ch7033_bridge_mode_set(struct drm_bridge *bridge,
> int hsynclen = mode->hsync_end - mode->hsync_start;
> int vbporch = mode->vsync_start - mode->vdisplay;
> int vsynclen = mode->vsync_end - mode->vsync_start;
> - u8 byte_swap;
> - int ret;
>
> /*
> * Page 4
> @@ -401,16 +398,8 @@ static void ch7033_bridge_mode_set(struct drm_bridge *bridge,
> regmap_write(priv->regmap, 0x15, vbporch);
> regmap_write(priv->regmap, 0x16, vsynclen);
>
> - /* Input color swap. Byte order is optional and will default to
> - * BYTE_SWAP_BGR to preserve backwards compatibility with existing
> - * driver.
> - */
> - ret = of_property_read_u8(priv->bridge.of_node, "chrontel,byteswap",
> - &byte_swap);
> - if (!ret && byte_swap < BYTE_SWAP_MAX)
> - regmap_update_bits(priv->regmap, 0x18, SWAP, byte_swap);
> - else
> - regmap_update_bits(priv->regmap, 0x18, SWAP, BYTE_SWAP_BGR);
> + /* Input color swap. */
> + regmap_update_bits(priv->regmap, 0x18, SWAP, BYTE_SWAP_BGR);
>
> /* Input clock and sync polarity. */
> regmap_update_bits(priv->regmap, 0x19, 0x1, mode->clock >> 16);

--
Regards,

Laurent Pinchart