From f300c86e33a686c7abcf0c37deee04ef666ed78b Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 24 Oct 2018 11:43:12 -0700 Subject: [PATCH] drm: Add an hx8367d tinydrm driver. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit I want to sort out support for tinydrm in vc4, so I needed to get a tinydrm-appropriate panel working and this is what I had on hand. This is derived from a combination of ili9341.c from tinydrm and fb_hx8357d.c from staging's fbtft. v2: Write my own register defs from the spec to not need the header from fbtft. Fix spi device string to enable module autoloading. (Suggestions by Noralf) Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20181024184313.2967-3-eric@anholt.net Reviewed-by: Noralf Trønnes (v1) --- MAINTAINERS | 7 + drivers/gpu/drm/tinydrm/Kconfig | 11 ++ drivers/gpu/drm/tinydrm/Makefile | 1 + drivers/gpu/drm/tinydrm/hx8357d.c | 270 ++++++++++++++++++++++++++++++ 4 files changed, 289 insertions(+) create mode 100644 drivers/gpu/drm/tinydrm/hx8357d.c diff --git a/MAINTAINERS b/MAINTAINERS index 1fa3432e9e33..ff1f2878e14b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4623,6 +4623,13 @@ S: Maintained F: drivers/gpu/drm/tinydrm/ili9225.c F: Documentation/devicetree/bindings/display/ilitek,ili9225.txt +DRM DRIVER FOR HX8357D PANELS +M: Eric Anholt +T: git git://anongit.freedesktop.org/drm/drm-misc +S: Maintained +F: drivers/gpu/drm/tinydrm/hx8357d.c +F: Documentation/devicetree/bindings/display/himax,hx8357d.txt + DRM DRIVER FOR INTEL I810 VIDEO CARDS S: Orphan / Obsolete F: drivers/gpu/drm/i810/ diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig index 16f4b5c91f1b..2c408ac1a900 100644 --- a/drivers/gpu/drm/tinydrm/Kconfig +++ b/drivers/gpu/drm/tinydrm/Kconfig @@ -10,6 +10,17 @@ menuconfig DRM_TINYDRM config TINYDRM_MIPI_DBI tristate +config TINYDRM_HX8357D + tristate "DRM support for HX8357D display panels" + depends on DRM_TINYDRM && SPI + depends on BACKLIGHT_CLASS_DEVICE + select TINYDRM_MIPI_DBI + help + DRM driver for the following HX8357D panels: + * YX350HV15-T 3.5" 340x350 TFT (Adafruit 3.5") + + If M is selected the module will be called hx8357d. + config TINYDRM_ILI9225 tristate "DRM support for ILI9225 display panels" depends on DRM_TINYDRM && SPI diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile index 14d99080665a..f823066f7743 100644 --- a/drivers/gpu/drm/tinydrm/Makefile +++ b/drivers/gpu/drm/tinydrm/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_TINYDRM) += core/ obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o # Displays +obj-$(CONFIG_TINYDRM_HX8357D) += hx8357d.o obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o obj-$(CONFIG_TINYDRM_ILI9341) += ili9341.o obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c new file mode 100644 index 000000000000..c3e51c2baebc --- /dev/null +++ b/drivers/gpu/drm/tinydrm/hx8357d.c @@ -0,0 +1,270 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * DRM driver for the HX8357D LCD controller + * + * Copyright 2018 Broadcom + * Copyright 2018 David Lechner + * Copyright 2016 Noralf Trønnes + * Copyright (C) 2015 Adafruit Industries + * Copyright (C) 2013 Christian Vogelgsang + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include