drm/tinydrm: remove call to mipi_dbi_init() from mipi_dbi_spi_init()

This removes the call to mipi_dbi_init() from mipi_dbi_spi_init() so that
drivers can have a driver-specific implementation if needed.

Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: David Lechner <david@lechnology.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1501799630-1650-2-git-send-email-david@lechnology.com
diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c
index c83eeb7..2caeabc 100644
--- a/drivers/gpu/drm/tinydrm/mipi-dbi.c
+++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c
@@ -776,15 +776,12 @@ static int mipi_dbi_typec3_command(struct mipi_dbi *mipi, u8 cmd,
 /**
  * mipi_dbi_spi_init - Initialize MIPI DBI SPI interfaced controller
  * @spi: SPI device
- * @dc: D/C gpio (optional)
  * @mipi: &mipi_dbi structure to initialize
- * @pipe_funcs: Display pipe functions
- * @driver: DRM driver
- * @mode: Display mode
- * @rotation: Initial rotation in degrees Counter Clock Wise
+ * @dc: D/C gpio (optional)
  *
  * This function sets &mipi_dbi->command, enables &mipi->read_commands for the
- * usual read commands and initializes @mipi using mipi_dbi_init().
+ * usual read commands. It should be followed by a call to mipi_dbi_init() or
+ * a driver-specific init.
  *
  * If @dc is set, a Type C Option 3 interface is assumed, if not
  * Type C Option 1.
@@ -799,11 +796,7 @@ static int mipi_dbi_typec3_command(struct mipi_dbi *mipi, u8 cmd,
  * Zero on success, negative error code on failure.
  */
 int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *mipi,
-		      struct gpio_desc *dc,
-		      const struct drm_simple_display_pipe_funcs *pipe_funcs,
-		      struct drm_driver *driver,
-		      const struct drm_display_mode *mode,
-		      unsigned int rotation)
+		      struct gpio_desc *dc)
 {
 	size_t tx_size = tinydrm_spi_max_transfer_size(spi, 0);
 	struct device *dev = &spi->dev;
@@ -849,7 +842,7 @@ int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *mipi,
 			return -ENOMEM;
 	}
 
-	return mipi_dbi_init(dev, mipi, pipe_funcs, driver, mode, rotation);
+	return 0;
 }
 EXPORT_SYMBOL(mipi_dbi_spi_init);