drm/tinydrm: Use DRM_MODE_CONNECTOR_SPI

tinydrm drivers announce DRM_MODE_CONNECTOR_VIRTUAL for its SPI drivers.
Use the new SPI connector type instead.

X server will now list the connector as Unknown instead of Virtual:

X.Org X Server 1.19.2
Release Date: 2017-03-02
<...>
[ 53523.905] (II) modeset(0): Output Unknown19-1 has no monitor section
[ 53523.908] (II) modeset(0): EDID for output Unknown19-1
[ 53523.910] (II) modeset(0): Printing probed modes for output Unknown19-1
[ 53523.911] (II) modeset(0): Modeline "320x240"x0.0    0.00  320 320 320 320  240 240 240 240 (0.0 kHz eP)
[ 53523.911] (II) modeset(0): Output Unknown19-1 connected
[ 53523.912] (II) modeset(0): Using exact sizes for initial modes
[ 53523.912] (II) modeset(0): Output Unknown19-1 using initial mode 320x240 +0+0

I won't chase down and fix userspace, but the new connector type will
trickle out to userspace eventually.

v2: Split patch in core and driver changes, expand commit message (Daniel)

Cc: David Lechner <david@lechnology.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: David Lechner <david@lechnology.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190719155916.62465-3-noralf@tronnes.org

drivers/gpu/drm/tinydrm/mipi-dbi.c

@@ -445,9 +445,8 @@ int mipi_dbi_init(struct mipi_dbi *mipi,
 	if (!mipi->tx_buf)
 		return -ENOMEM;
 
-	/* TODO: Maybe add DRM_MODE_CONNECTOR_SPI */
 	ret = tinydrm_display_pipe_init(drm, &mipi->pipe, funcs,
-					DRM_MODE_CONNECTOR_VIRTUAL,
+					DRM_MODE_CONNECTOR_SPI,
 					mipi_dbi_formats,
 					ARRAY_SIZE(mipi_dbi_formats), mode,
 					rotation);

drivers/gpu/drm/tinydrm/repaper.c

@@ -1110,7 +1110,7 @@ static int repaper_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	ret = tinydrm_display_pipe_init(drm, &epd->pipe, &repaper_pipe_funcs,
-					DRM_MODE_CONNECTOR_VIRTUAL,
+					DRM_MODE_CONNECTOR_SPI,
 					repaper_formats,
 					ARRAY_SIZE(repaper_formats), mode, 0);
 	if (ret)

drivers/gpu/drm/tinydrm/st7586.c

@@ -384,7 +384,7 @@ static int st7586_probe(struct spi_device *spi)
 	mipi->swap_bytes = true;
 
 	ret = tinydrm_display_pipe_init(drm, &mipi->pipe, &st7586_pipe_funcs,
-					DRM_MODE_CONNECTOR_VIRTUAL,
+					DRM_MODE_CONNECTOR_SPI,
 					st7586_formats, ARRAY_SIZE(st7586_formats),
 					&st7586_mode, rotation);
 	if (ret)