This is an attempt at providing a DRM version of drivers/staging/fbtft. I'm sending this early before cleaning up the code hoping to get some feedback in case there are better ways to structure this. The tinydrm module provides a very simplified view of DRM for displays that has onboard video memory and is connected through a slow bus like SPI/I2C. A driver using tinydrm has to provide a function that will be called from the dirtyfb ioctl (or fbdev deferred io) and optional drm_panel functions which can be used to set up the display controller and control backlight. Display controllers that have a similar register interface as the MIPI DBI/DCS controllers can use the lcdreg module for register access. Changes since RFC v1: - Add fb_deferred_io support to drm_fb_helper and drm_fb_cma_helper, and use drm_fb_cma_helper instead. - Move display pipeline code to drm_simple_kms_helper. - Don't use (struct drm_driver *)->load(). - Make tinydrm more like a library, exporting the internals. - Move the struct drm_driver definition from the tinydrm module to the driver using a helper macro: TINYDRM_DRM_DRIVER. - Remove dirtyfb() async code. - Added support for partial display updates. Noralf Trønnes (8): drm/fb-helper: Add fb_deferred_io support drm/fb-cma-helper: Add fb_deferred_io support drm: Add helper for simple kms drivers drm: Add DRM support for tiny LCD displays drm/tinydrm: Add lcd register abstraction drm/tinydrm/lcdreg: Add SPI support drm/tinydrm: Add mipi-dbi support drm/tinydrm: Add support for several Adafruit TFT displays drivers/gpu/drm/Kconfig | 9 + drivers/gpu/drm/Makefile | 2 + drivers/gpu/drm/drm_fb_cma_helper.c | 149 ++++- drivers/gpu/drm/drm_fb_helper.c | 189 +++++- drivers/gpu/drm/drm_simple_kms_helper.c | 262 ++++++++ drivers/gpu/drm/tinydrm/Kconfig | 25 + drivers/gpu/drm/tinydrm/Makefile | 8 + drivers/gpu/drm/tinydrm/adafruit-tft.c | 257 ++++++++ drivers/gpu/drm/tinydrm/core/Makefile | 6 + drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 155 +++++ .../gpu/drm/tinydrm/core/tinydrm-display-pipe.c | 82 +++ drivers/gpu/drm/tinydrm/core/tinydrm-fbdev.c | 94 +++ drivers/gpu/drm/tinydrm/core/tinydrm-framebuffer.c | 99 +++ drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 95 +++ drivers/gpu/drm/tinydrm/lcdreg/Kconfig | 8 + drivers/gpu/drm/tinydrm/lcdreg/Makefile | 5 + drivers/gpu/drm/tinydrm/lcdreg/internal.h | 8 + drivers/gpu/drm/tinydrm/lcdreg/lcdreg-core.c | 190 ++++++ drivers/gpu/drm/tinydrm/lcdreg/lcdreg-debugfs.c | 281 ++++++++ drivers/gpu/drm/tinydrm/lcdreg/lcdreg-spi.c | 720 +++++++++++++++++++++ drivers/gpu/drm/tinydrm/mipi-dbi.c | 253 ++++++++ include/drm/drm_fb_cma_helper.h | 14 + include/drm/drm_fb_helper.h | 15 + include/drm/drm_simple_kms_helper.h | 44 ++ include/drm/tinydrm/ili9340.h | 47 ++ include/drm/tinydrm/lcdreg-spi.h | 63 ++ include/drm/tinydrm/lcdreg.h | 126 ++++ include/drm/tinydrm/mipi-dbi.h | 24 + include/drm/tinydrm/tinydrm.h | 143 ++++ 29 files changed, 3360 insertions(+), 13 deletions(-) create mode 100644 drivers/gpu/drm/drm_simple_kms_helper.c create mode 100644 drivers/gpu/drm/tinydrm/Kconfig create mode 100644 drivers/gpu/drm/tinydrm/Makefile create mode 100644 drivers/gpu/drm/tinydrm/adafruit-tft.c create mode 100644 drivers/gpu/drm/tinydrm/core/Makefile create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-core.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-display-pipe.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-fbdev.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-framebuffer.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/Kconfig create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/Makefile create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/internal.h create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-core.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-debugfs.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-spi.c create mode 100644 drivers/gpu/drm/tinydrm/mipi-dbi.c create mode 100644 include/drm/drm_simple_kms_helper.h create mode 100644 include/drm/tinydrm/ili9340.h create mode 100644 include/drm/tinydrm/lcdreg-spi.h create mode 100644 include/drm/tinydrm/lcdreg.h create mode 100644 include/drm/tinydrm/mipi-dbi.h create mode 100644 include/drm/tinydrm/tinydrm.h -- 2.2.2 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
