// SPDX-License-Identifier: GPL-2.0-only /* * (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved. * * Parts of this file were based on sources as follows: * * Copyright (c) 2006-2008 Intel Corporation * Copyright (c) 2007 Dave Airlie <[email protected]> * Copyright (C) 2011 Texas Instruments */ /** * DOC: ARM PrimeCell PL110 and PL111 CLCD Driver * * The PL110/PL111 is a simple LCD controller that can support TFT * and STN displays. This driver exposes a standard KMS interface * for them. * * The driver currently doesn't expose the cursor. The DRM API for * cursors requires support for 64x64 ARGB8888 cursor images, while * the hardware can only support 64x64 monochrome with masking * cursors. While one could imagine trying to hack something together * to look at the ARGB8888 and program reasonable in monochrome, we * just don't expose the cursor at all instead, and leave cursor * support to the application software cursor layer. * * TODO: * * - Fix race between setting plane base address and getting IRQ for * vsync firing the pageflip completion. * * - Read back hardware state at boot to skip reprogramming the * hardware when doing a no-op modeset. * * - Use the CLKSEL bit to support switching between the two external * clock parents. */ #include <linux/amba/bus.h> #include <linux/dma-buf.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_graph.h> #include <linux/of_reserved_mem.h> #include <linux/shmem_fs.h> #include <linux/slab.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_drv.h> #include <drm/drm_fbdev_dma.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_dma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_of.h> #include <drm/drm_panel.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> #include "pl111_drm.h" #include "pl111_versatile.h" #include "pl111_nomadik.h" #define DRIVER_DESC … static const struct drm_mode_config_funcs mode_config_funcs = …; static int pl111_modeset_init(struct drm_device *dev) { … } static struct drm_gem_object * pl111_gem_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt) { … } DEFINE_DRM_GEM_DMA_FOPS(drm_fops); static const struct drm_driver pl111_drm_driver = …; static int pl111_amba_probe(struct amba_device *amba_dev, const struct amba_id *id) { … } static void pl111_amba_remove(struct amba_device *amba_dev) { … } static void pl111_amba_shutdown(struct amba_device *amba_dev) { … } /* * This early variant lacks the 565 and 444 pixel formats. */ static const u32 pl110_pixel_formats[] = …; static const struct pl111_variant_data pl110_variant = …; /* RealView, Versatile Express etc use this modern variant */ static const u32 pl111_pixel_formats[] = …; static const struct pl111_variant_data pl111_variant = …; static const u32 pl110_nomadik_pixel_formats[] = …; static const struct pl111_variant_data pl110_nomadik_variant = …; static const struct amba_id pl111_id_table[] = …; MODULE_DEVICE_TABLE(amba, pl111_id_table); static struct amba_driver pl111_amba_driver __maybe_unused = …; #ifdef CONFIG_ARM_AMBA module_amba_driver(pl111_amba_driver); #endif MODULE_DESCRIPTION(…); MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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