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path: root/drivers/gpu/drm/tinydrm/ili9225.c
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2019-07-31drm/tinydrm: Rename folder to tinyNoralf Trønnes1-470/+0
The drm in tinydrm is superfluous so rename to tiny. Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190725105132.22545-3-noralf@tronnes.org
2019-07-25drm/tinydrm: Move mipi-dbiNoralf Trønnes1-1/+1
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
2019-07-25drm/tinydrm: Split struct mipi_dbi in twoNoralf Trønnes1-9/+9
Split struct mipi_dbi into an interface part and a display pipeline part. The interface part can be used by drivers that need to initialize the controller, but that won't upload the framebuffer over this interface. MIPI DBI supports 3 interface types: - A. Motorola 6800 type parallel bus - B. Intel 8080 type parallel bus - C. SPI type with 3 options: I've embedded the SPI type specifics in the mipi_dbi struct to avoid adding unnecessary complexity. If more interface types will be supported in the future, the type specifics might have to be split out. Rename functions to match the new struct mipi_dbi_dev: - drm_to_mipi_dbi() -> drm_to_mipi_dbi_dev(). - mipi_dbi_init*() -> mipi_dbi_dev_init*(). 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/20190722104312.16184-5-noralf@tronnes.org
2019-07-25drm/tinydrm: Rename remaining variable mipi -> dbidevNoralf Trønnes1-21/+21
struct mipi_dbi is going to be split into an interface part and a display pipeline part. The interface part can be used by drivers that need to initialize the controller, but that won't upload the framebuffer over this interface. tinydrm uses the variable name 'mipi' but this is not a good name since MIPI refers to a lot of standards. This patch changes the variable name to 'dbidev' where it refers to the pipeline part of struct mipi_dbi. 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/20190722104312.16184-4-noralf@tronnes.org
2019-07-25drm/tinydrm: Rename variable mipi -> dbiNoralf Trønnes1-68/+73
struct mipi_dbi is going to be split into an interface part and a display pipeline part. The interface part can be used by drivers that need to initialize the controller, but that won't upload the framebuffer over this interface. tinydrm uses the variable name 'mipi' but this is not a good name since MIPI refers to a lot of standards. This patch changes the variable name to 'dbi' where it refers to the interface part of struct mipi_dbi. Functions that use both future parts will have both variables temporarily pointing to the same structure. 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/20190722104312.16184-3-noralf@tronnes.org
2019-07-23drm/tinydrm: Move tinydrm_spi_transfer()Noralf Trønnes1-3/+2
This is only used by mipi-dbi drivers so move it there. The reason this isn't moved to the SPI subsystem is that it will in a later patch pass a dummy rx buffer for SPI controllers that need this. Low memory boards (64MB) can run into a problem allocating such a "large" contiguous buffer on every transfer after a long up time. This leaves a very specific use case, so we'll keep the function here. mipi-dbi will first go through a refactoring though, before this will be done. Remove SPI todo entry now that we're done with the tinydrm.ko SPI code. v2: Drop moving the mipi_dbi_spi_init() declaration (Sam) 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/20190719155916.62465-8-noralf@tronnes.org
2019-07-23drm/tinydrm: Clean up tinydrm_spi_transfer()Noralf Trønnes1-2/+2
Prep work before moving the function to mipi-dbi. tinydrm_spi_transfer() was made to support one class of drivers in drivers/staging/fbtft that has not been converted to DRM yet, so strip away the unused functionality: - Start byte (header) is not used. - No driver relies on the automatic 16-bit byte swapping on little endian machines with SPI controllers only supporting 8 bits per word. Other changes: - No need to initialize ret - No need for the WARN since mipi-dbi only uses 8 and 16 bpw. - Use spi_message_init_with_transfers() Cc: David Lechner <david@lechnology.com> Acked-by: : David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190719155916.62465-7-noralf@tronnes.org
2019-06-21drm/prime: Actually remove DRIVER_PRIME everywhereDaniel Vetter1-2/+1
Split out to make the functional changes stick out more. All places where DRIVER_PRIME was used have been removed in previous patches already. v2: amdgpu gained DRIVER_SYNCOBJ_TIMELINE. v3: amdgpu lost DRIVER_SYNCOBJ_TIMELINE. v4: Don't add a space in i915_drv.c (Sam) v5: Add note that previous patches removed all the DRIVER_PRIME users already (Emil). v6: Fixupe ingenic (new driver) while applying. Cc: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: amd-gfx@lists.freedesktop.org Cc: etnaviv@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Cc: lima@lists.freedesktop.org Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: linux-aspeed@lists.ozlabs.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-tegra@vger.kernel.org Cc: nouveau@lists.freedesktop.org Cc: NXP Linux Team <linux-imx@nxp.com> Cc: spice-devel@lists.freedesktop.org Cc: virtualization@lists.linux-foundation.org Cc: VMware Graphics <linux-graphics-maintainer@vmware.com> Cc: xen-devel@lists.xenproject.org Link: https://patchwork.freedesktop.org/patch/msgid/20190617153924.414-1-daniel.vetter@ffwll.ch
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner1-5/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-11drm/tinydrm: Fix fbdev pixel formatNoralf Trønnes1-1/+1
Due to copy/paste error, the fbdev format was changed to 32bpp = XRGB8888 which is an emulated format for the RGB565 drivers. Revert to to using the fallback which is dev->mode_config.preferred_depth for the drivers that set it or 32bpp for those that don't (repaper, st7586). Fixes: 3eba3922819f ("drm/tinydrm: Drop using tinydrm_device") Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190410124345.25945-1-noralf@tronnes.org
2019-03-20tinydrm/mipi-dbi: Use dma-safe buffers for all SPI transfersNoralf Trønnes1-3/+3
Buffers passed to spi_sync() must be dma-safe even for tiny buffers since some SPI controllers use DMA for all transfers. Example splat with CONFIG_DMA_API_DEBUG enabled: [ 23.750467] DMA-API: dw_dmac_pci 0000:00:15.0: device driver maps memory from stack [probable addr=000000001e49185d] [ 23.750529] WARNING: CPU: 1 PID: 1296 at kernel/dma/debug.c:1161 check_for_stack+0xb7/0x190 [ 23.750533] Modules linked in: mmc_block(+) spi_pxa2xx_platform(+) pwm_lpss_pci pwm_lpss spi_pxa2xx_pci sdhci_pci cqhci intel_mrfld_pwrbtn extcon_intel_mrfld sdhci intel_mrfld_adc led_class mmc_core ili9341 mipi_dbi tinydrm backlight ti_ads7950 industrialio_triggered_buffer kfifo_buf intel_soc_pmic_mrfld hci_uart btbcm [ 23.750599] CPU: 1 PID: 1296 Comm: modprobe Not tainted 5.0.0-rc7+ #236 [ 23.750605] Hardware name: Intel Corporation Merrifield/BODEGA BAY, BIOS 542 2015.01.21:18.19.48 [ 23.750620] RIP: 0010:check_for_stack+0xb7/0x190 [ 23.750630] Code: 8b 6d 50 4d 85 ed 75 04 4c 8b 6d 10 48 89 ef e8 2f 8b 44 00 48 89 c6 4a 8d 0c 23 4c 89 ea 48 c7 c7 88 d0 82 b4 e8 40 7c f9 ff <0f> 0b 8b 05 79 00 4b 01 85 c0 74 07 5b 5d 41 5c 41 5d c3 8b 05 54 [ 23.750637] RSP: 0000:ffff97bbc0292fa0 EFLAGS: 00010286 [ 23.750646] RAX: 0000000000000000 RBX: ffff97bbc0290000 RCX: 0000000000000006 [ 23.750652] RDX: 0000000000000007 RSI: 0000000000000002 RDI: ffff94b33e115450 [ 23.750658] RBP: ffff94b33c8578b0 R08: 0000000000000002 R09: 00000000000201c0 [ 23.750664] R10: 00000006ecb0ccc6 R11: 0000000000034f38 R12: 000000000000316c [ 23.750670] R13: ffff94b33c84b250 R14: ffff94b33dedd5a0 R15: 0000000000000001 [ 23.750679] FS: 0000000000000000(0000) GS:ffff94b33e100000(0063) knlGS:00000000f7faf690 [ 23.750686] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 23.750691] CR2: 00000000f7f54faf CR3: 000000000722c000 CR4: 00000000001006e0 [ 23.750696] Call Trace: [ 23.750713] debug_dma_map_sg+0x100/0x340 [ 23.750727] ? dma_direct_map_sg+0x3b/0xb0 [ 23.750739] spi_map_buf+0x25a/0x300 [ 23.750751] __spi_pump_messages+0x2a4/0x680 [ 23.750762] __spi_sync+0x1dd/0x1f0 [ 23.750773] spi_sync+0x26/0x40 [ 23.750790] mipi_dbi_typec3_command_read+0x14d/0x240 [mipi_dbi] [ 23.750802] ? spi_finalize_current_transfer+0x10/0x10 [ 23.750821] mipi_dbi_typec3_command+0x1bc/0x1d0 [mipi_dbi] Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190222124329.23046-1-noralf@tronnes.org
2019-03-04drm/tinydrm: Use drm_dev_enter/exit()Noralf Trønnes1-3/+20
This protects device resources from use after device removal. There are 3 ways for driver-device unbinding to happen: - The driver module is unloaded causing the driver to be unregistered. This can't happen as long as there are open file handles because a reference is taken on the module. - The device is removed (Device Tree overlay unloading). This can happen at any time. - The driver sysfs unbind file can be used to unbind the driver from the device. This can happen any time. v2: Since drm_atomic_helper_shutdown() has to be called after drm_dev_unplug() we don't want do block ->disable after unplug. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-8-noralf@tronnes.org
2019-03-04drm/tinydrm: Drop using tinydrm_deviceNoralf Trønnes1-5/+35
Use devm_drm_dev_init() and drop using tinydrm_device. v2: devm_drm_dev_register() was dropped so add driver release callbacks. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-6-noralf@tronnes.org
2019-02-21drm/tinydrm/mipi-dbi: Add drm_to_mipi_dbi()Noralf Trønnes1-7/+4
Add a function to derive mipi_dbi from drm_device now that tinydrm_device is going away. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190210131039.52664-8-noralf@tronnes.org
2019-02-21drm/tinydrm: Remove tinydrm_shutdown()Noralf Trønnes1-4/+3
It's just a wrapper around drm_atomic_helper_shutdown() now. Also store drm_device in the drvdata field, since that's what's used. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190210131039.52664-7-noralf@tronnes.org
2019-02-21drm/modes: Add DRM_SIMPLE_MODE()Noralf Trønnes1-1/+1
This adds a helper macro to specify modes that only contain info about resolution. v2: Actually set the width and height (Ilia Mirkin) Cc: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190210131039.52664-5-noralf@tronnes.org
2019-01-17drm/tinydrm: Use damage helper for dirtyfbNoralf Trønnes1-71/+41
This switches to drm_atomic_helper_dirtyfb() as the framebuffer dirty handler. All flushing will now happen in the pipe functions. Also enable the damage plane property for all except repaper which can only do full updates. ili9225: This change made ili9225_init() equal to mipi_dbi_init() so use it. v3: Include vblank header (Sam) ili9225 and st7586 can't use mipi_dbi_enable_flush() (David) v2: Remove fb check in mipi_dbi_enable_flush() it can't be NULL (kbuild test robot) Cc: David Lechner <david@lechnology.com> Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Tested-by: David Lechner <david@lechnology.com> Reviewed-by: David Lechner <david@lechnology.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-5-noralf@tronnes.org
2019-01-17drm/tinydrm: Use struct drm_rectNoralf Trønnes1-21/+22
This prepares for the switch to drm_atomic_helper_dirtyfb() in the next patch. The damage helper returns a drm_rect so switch to that everywhere including using a pointer in the dirty functions. This is a non-functional change except for the debug print which looks a bit different. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-4-noralf@tronnes.org
2019-01-10drm/tinydrm: do not reply on drmP.h from drm_gem_cma_helper.hSam Ravnborg1-0/+2
drmP.h was the only header file in the past and a lot of files rely on that drmP.h defines everything. The goal is to one day to delete drmP.h and as a step towards this it will no longer be included in the headers files in include/drm/ To prepare tinydrm/ for this add dependencies that othwewise was pulled in by drmP.h from drm_gem_cma_helper.h To avoid that tinydrm.h became "include everything", push include files to the individual drivers. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: David Lechner <david@lechnology.com> Cc: David Airlie <airlied@linux.ie> Cc: Eric Anholt <eric@anholt.net> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-12-sam@ravnborg.org
2018-11-20drm/tinydrm: Use DRM_GEM_CMA_VMAP_DRIVER_OPSNoralf Trønnes1-2/+3
The CMA helper now has the functionality to ensure a virtual address on imported buffer so use that. While touching all tinydrm drivers, remove the unnecessary inclusion of drm_fb_helper.h in some drivers. Cc: David Lechner <david@lechnology.com> Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20181110145647.17580-6-noralf@tronnes.org
2018-07-10drm/tinydrm: Use drm_fbdev_generic_setup()Noralf Trønnes1-1/+0
Make full use of the generic fbdev client. Cc: David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: David Lechner <david@lechnology.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180703160354.59955-8-noralf@tronnes.org
2018-04-24drm: Move simple_display_pipe prepare_fb helper into gem fb helpersDaniel Vetter1-1/+1
There's nothing tinydrm specific to this, and there's a few more copies of the same in various other drivers. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: David Lechner <david@lechnology.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Daniel Stone <daniels@collabora.com> Cc: Haneen Mohammed <hamohammed.sa@gmail.com> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com> Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Acked-by: David Lechner <david@lechnology.com> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180405154449.23038-3-daniel.vetter@ffwll.ch
2018-03-28drm/tinydrm: Make fb_dirty into a lower level hookVille Syrjälä1-17/+6
mipi_dbi_enable_flush() wants to call the fb->dirty() hook from the bowels of the .atomic_enable() hook. That prevents us from taking the plane mutex in fb->dirty() unless we also plumb down the acquire context. Instead it seems simpler to split the fb->dirty() into a tinydrm specific lower level hook that can be called from mipi_dbi_enable_flush() and from a generic higher level tinydrm_fb_dirty() helper. As we don't have a tinydrm specific vfuncs table we'll just stick it into tinydrm_device directly for now. v2: Deal with the fb->dirty() in tinydrm_display_pipe_update() as well (Noralf) Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: David Lechner <david@lechnology.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180323153509.15287-1-ville.syrjala@linux.intel.com Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Noralf Trønnes <noralf@tronnes.org>
2018-03-28drm/simple-kms-helper: Plumb plane state to the enable hookVille Syrjälä1-1/+2
tinydrm enable hook wants to play around with the new fb in .atomic_enable(), thus we'll need access to the plane state. Performed with coccinelle: @r1@ identifier F =~ ".*enable$"; identifier P, CS; @@ F( struct drm_simple_display_pipe *P ,struct drm_crtc_state *CS + ,struct drm_plane_state *plane_state ) { ... } @@ struct drm_simple_display_pipe *P; expression E; @@ { + struct drm_plane *plane; ... + plane = &P->plane; P->funcs->enable(P ,E + ,plane->state ); ... } @@ identifier P, CS; @@ struct drm_simple_display_pipe_funcs { ... void (*enable)(struct drm_simple_display_pipe *P ,struct drm_crtc_state *CS + ,struct drm_plane_state *plane_state ); ... }; v2: Pimp the commit message (David) Cc: Marek Vasut <marex@denx.de> Cc: Eric Anholt <eric@anholt.net> Cc: David Lechner <david@lechnology.com> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180322202738.25817-1-ville.syrjala@linux.intel.com Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
2018-01-15drm/tinydrm/mipi-dbi: Add mipi_dbi_enable_flush()Noralf Trønnes1-5/+1
Add and use a function for enabling, flushing and turning on backlight. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: David Lechner <david@lechnology.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180110185940.53841-4-noralf@tronnes.org
2018-01-03drm/tinydrm: Update ILI9225 compatible stringDavid Lechner1-2/+2
This updates the compatible string for a no-name LCD panel to "vot,v220hf01a-t", "ilitek,ili9225". The original bindings were the generic "ilitek,ili9225-2.2in-176x220" because I could not find a datasheet. However, after some more research, I finally found one, so the actual vendor and model name are now known. This previous bindings have not made it to the mainline kernel yet, so this is not breaking backwards compatibility. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/1513881187-3197-4-git-send-email-david@lechnology.com
2017-12-10drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()Noralf Trønnes1-1/+2
Use drm_fb_cma_fbdev_init_with_funcs() and drm_fb_cma_fbdev_fini() which relies on the fact that drm_device holds a pointer to the drm_fb_helper structure. This means that the driver doesn't have to keep track of that. Also use the drm_fb_helper functions directly. Remove todo entry. Cc: David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: David Lechner <david@lechnology.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Tested-by: David Lechner <david@lechnolgy.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171208193743.34450-11-noralf@tronnes.org
2017-12-01drm/tinydrm: add driver for ILI9225 panelsDavid Lechner1-0/+468
This adds a new driver for display panels based on the Ilitek ILI9225 controller. This was developed for a no-name panel with a red PCB that is commonly marketed for Arduino. See <https://github.com/Nkawu/TFT_22_ILI9225>. 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/1511122328-31133-5-git-send-email-david@lechnology.com