drm/tinydrm: Move mipi-dbi

This moves mipi-dbi to be a core helper with the name drm_mipi_dbi.

Fixup include's in drivers.
Move the docs entry and delete tinydrm.rst.
Delete the last tinydrm todo entry.

v2: Make DRM_MIPI_DBI tristate to enable it being built as a module.

Cc: Eric Anholt <eric@anholt.net>
Cc: David Lechner <david@lechnology.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: David Lechner <david@lechnology.com>
Acked-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190722104312.16184-9-noralf@tronnes.org

16 files changed, 30 insertions, 53 deletions

diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst
index 4bfb7068e9f7..b4a0ed3ca961 100644
--- a/Documentation/gpu/drivers.rst
+++ b/Documentation/gpu/drivers.rst
@@ -11,7 +11,6 @@ GPU Driver Documentation
    meson
    pl111
    tegra
-   tinydrm
    tve200
    v3d
    vc4
diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst
index b327bbc11182..3868008db8a9 100644
--- a/Documentation/gpu/drm-kms-helpers.rst
+++ b/Documentation/gpu/drm-kms-helpers.rst
@@ -263,6 +263,18 @@ the MST topology helpers easier to understand
                drm_dp_mst_topology_put_port
                drm_dp_mst_get_mstb_malloc drm_dp_mst_put_mstb_malloc
 
+MIPI DBI Helper Functions Reference
+===================================
+
+.. kernel-doc:: drivers/gpu/drm/drm_mipi_dbi.c
+   :doc: overview
+
+.. kernel-doc:: include/drm/drm_mipi_dbi.h
+   :internal:
+
+.. kernel-doc:: drivers/gpu/drm/drm_mipi_dbi.c
+   :export:
+
 MIPI DSI Helper Functions Reference
 ===================================
 
diff --git a/Documentation/gpu/tinydrm.rst b/Documentation/gpu/tinydrm.rst
deleted file mode 100644
index 64bdf6356024..000000000000
--- a/Documentation/gpu/tinydrm.rst
+++ /dev/null
@@ -1,18 +0,0 @@
-============================
-drm/tinydrm Tiny DRM drivers
-============================
-
-tinydrm is a collection of DRM drivers that are so small they can fit in a
-single source file.
-
-MIPI DBI Compatible Controllers
-===============================
-
-.. kernel-doc:: drivers/gpu/drm/tinydrm/mipi-dbi.c
-   :doc: overview
-
-.. kernel-doc:: include/drm/tinydrm/mipi-dbi.h
-   :internal:
-
-.. kernel-doc:: drivers/gpu/drm/tinydrm/mipi-dbi.c
-   :export:
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 688b4adbbf62..b81cc007acb8 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -437,19 +437,6 @@ Contact: Daniel Vetter
 Driver Specific
 ===============
 
-tinydrm
--------
-
-Tinydrm is the helper driver for really simple fb drivers. The goal is to make
-those drivers as simple as possible, so lots of room for refactoring:
-
-- extract the mipi-dbi helper (well, the non-tinydrm specific parts at
-  least) into a separate helper, like we have for mipi-dsi already. Or follow
-  one of the ideas for having a shared dsi/dbi helper, abstracting away the
-  transport details more.
-
-Contact: Noralf Trønnes, Daniel Vetter
-
 AMD DC Display Driver
 ---------------------
 
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index f96b09333fad..a88581b0f002 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -24,6 +24,10 @@ menuconfig DRM
           details.  You should also select and configure AGP
           (/dev/agpgart) support if it is available for your platform.
 
+config DRM_MIPI_DBI
+        tristate
+        depends on DRM
+
 config DRM_MIPI_DSI
         bool
         depends on DRM
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 9728900fb3a2..98c732f925c7 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += selftests/
 
 obj-$(CONFIG_DRM)       += drm.o
+obj-$(CONFIG_DRM_MIPI_DBI) += drm_mipi_dbi.o
 obj-$(CONFIG_DRM_MIPI_DSI) += drm_mipi_dsi.o
 obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
 obj-y                   += arm/
diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index d6f3406a4075..1961f713aaab 100644
--- a/drivers/gpu/drm/tinydrm/mipi-dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -20,11 +20,11 @@
 #include <drm/drm_format_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_rect.h>
 #include <drm/drm_vblank.h>
-#include <drm/tinydrm/mipi-dbi.h>
 #include <video/mipi_display.h>
 
 #define MIPI_DBI_MAX_SPI_READ_SPEED 2000000 /* 2MHz */
diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig
index 637697649612..42b06f4f8989 100644
--- a/drivers/gpu/drm/tinydrm/Kconfig
+++ b/drivers/gpu/drm/tinydrm/Kconfig
@@ -8,14 +8,10 @@ menuconfig DRM_TINYDRM
           Choose this option if you have a tinydrm supported display.
           If M is selected the module will be called tinydrm.
 
-config TINYDRM_MIPI_DBI
-        tristate
-        select DRM_KMS_HELPER
-
 config TINYDRM_HX8357D
         tristate "DRM support for HX8357D display panels"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         select BACKLIGHT_CLASS_DEVICE
         help
           DRM driver for the following HX8357D panels:
@@ -26,7 +22,7 @@ config TINYDRM_HX8357D
 config TINYDRM_ILI9225
         tristate "DRM support for ILI9225 display panels"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         help
           DRM driver for the following Ilitek ILI9225 panels:
           * No-name 2.2" color screen module
@@ -36,7 +32,7 @@ config TINYDRM_ILI9225
 config TINYDRM_ILI9341
         tristate "DRM support for ILI9341 display panels"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         select BACKLIGHT_CLASS_DEVICE
         help
           DRM driver for the following Ilitek ILI9341 panels:
@@ -47,7 +43,7 @@ config TINYDRM_ILI9341
 config TINYDRM_MI0283QT
         tristate "DRM support for MI0283QT"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         select BACKLIGHT_CLASS_DEVICE
         help
           DRM driver for the Multi-Inno MI0283QT display panel
@@ -69,7 +65,7 @@ config TINYDRM_REPAPER
 config TINYDRM_ST7586
         tristate "DRM support for Sitronix ST7586 display panels"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         help
           DRM driver for the following Sitronix ST7586 panels:
           * LEGO MINDSTORMS EV3
@@ -79,7 +75,7 @@ config TINYDRM_ST7586
 config TINYDRM_ST7735R
         tristate "DRM support for Sitronix ST7735R display panels"
         depends on DRM_TINYDRM && SPI
-        select TINYDRM_MIPI_DBI
+        select DRM_MIPI_DBI
         select BACKLIGHT_CLASS_DEVICE
         help
           DRM driver Sitronix ST7735R with one of the following LCDs:
diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile
index ab6b9bebf321..6490167a9ad1 100644
--- a/drivers/gpu/drm/tinydrm/Makefile
+++ b/drivers/gpu/drm/tinydrm/Makefile
@@ -1,9 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-# Controllers
-obj-$(CONFIG_TINYDRM_MIPI_DBI)          += mipi-dbi.o
-
-# Displays
 obj-$(CONFIG_TINYDRM_HX8357D)           += hx8357d.o
 obj-$(CONFIG_TINYDRM_ILI9225)           += ili9225.o
 obj-$(CONFIG_TINYDRM_ILI9341)           += ili9341.o
diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c
index 471e545154b3..9af8ff84974f 100644
--- a/drivers/gpu/drm/tinydrm/hx8357d.c
+++ b/drivers/gpu/drm/tinydrm/hx8357d.c
@@ -21,8 +21,8 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_modeset_helper.h>
-#include <drm/tinydrm/mipi-dbi.h>
 #include <video/mipi_display.h>
 
 #define HX8357D_SETOSC 0xb0
diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c
index 33766fc21b2b..c66acc566c2b 100644
--- a/drivers/gpu/drm/tinydrm/ili9225.c
+++ b/drivers/gpu/drm/tinydrm/ili9225.c
@@ -24,9 +24,9 @@
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_rect.h>
 #include <drm/drm_vblank.h>
-#include <drm/tinydrm/mipi-dbi.h>
 
 #define ILI9225_DRIVER_READ_CODE        0x00
 #define ILI9225_DRIVER_OUTPUT_CONTROL   0x01
diff --git a/drivers/gpu/drm/tinydrm/ili9341.c b/drivers/gpu/drm/tinydrm/ili9341.c
index 71af275522a5..33b51dc7faa8 100644
--- a/drivers/gpu/drm/tinydrm/ili9341.c
+++ b/drivers/gpu/drm/tinydrm/ili9341.c
@@ -20,8 +20,8 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_modeset_helper.h>
-#include <drm/tinydrm/mipi-dbi.h>
 #include <video/mipi_display.h>
 
 #define ILI9341_FRMCTR1         0xb1
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
index 7925f69bc502..e2cfd9a17143 100644
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -18,8 +18,8 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_modeset_helper.h>
-#include <drm/tinydrm/mipi-dbi.h>
 #include <video/mipi_display.h>
 
 #define ILI9341_FRMCTR1         0xb1
diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c
index 51871ee16ef6..3cc21a1b30c8 100644
--- a/drivers/gpu/drm/tinydrm/st7586.c
+++ b/drivers/gpu/drm/tinydrm/st7586.c
@@ -21,9 +21,9 @@
 #include <drm/drm_format_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_rect.h>
 #include <drm/drm_vblank.h>
-#include <drm/tinydrm/mipi-dbi.h>
 
 /* controller-specific commands */
 #define ST7586_DISP_MODE_GRAY   0x38
diff --git a/drivers/gpu/drm/tinydrm/st7735r.c b/drivers/gpu/drm/tinydrm/st7735r.c
index 66275ef3a456..3f4487c71684 100644
--- a/drivers/gpu/drm/tinydrm/st7735r.c
+++ b/drivers/gpu/drm/tinydrm/st7735r.c
@@ -19,7 +19,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/tinydrm/mipi-dbi.h>
+#include <drm/drm_mipi_dbi.h>
 
 #define ST7735R_FRMCTR1         0xb1
 #define ST7735R_FRMCTR2         0xb2
diff --git a/include/drm/tinydrm/mipi-dbi.h b/include/drm/drm_mipi_dbi.h
index 67c66f5ee591..67c66f5ee591 100644
--- a/include/drm/tinydrm/mipi-dbi.h
+++ b/include/drm/drm_mipi_dbi.h