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70a59dd829
Only the following drivers aren't converted: - amdgpu, because of the driver_feature mangling due to virt support. Subsequent patch will address this. - nouveau, because DRIVER_ATOMIC uapi is still not the default on the platforms where it's supported (i.e. again driver_feature mangling) - vc4, again because of driver_feature mangling - qxl, because the ioctl table is somewhere else and moving that is maybe a bit too much, hence the num_ioctls assignment prevents a const driver structure. - arcpgu, because that is stuck behind a pending tiny-fication series from me. - legacy drivers, because legacy requires non-const drm_driver. Note that for armada I also went ahead and made the ioctl array const. Only cc'ing the driver people who've not been converted (everyone else is way too much). v2: Fix one misplaced const static, should be static const (0day) v3: - Improve commit message (Sam) Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: kernel test robot <lkp@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Dave Airlie <airlied@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: virtualization@lists.linux-foundation.org Cc: Harry Wentland <harry.wentland@amd.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Eric Anholt <eric@anholt.net> Cc: Maxime Ripard <mripard@kernel.org> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: nouveau@lists.freedesktop.org Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201104100425.1922351-5-daniel.vetter@ffwll.ch
296 lines
7.2 KiB
C
296 lines
7.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ZynqMP DisplayPort Subsystem Driver
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*
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* Copyright (C) 2017 - 2020 Xilinx, Inc.
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*
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* Authors:
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* - Hyun Woo Kwon <hyun.kwon@xilinx.com>
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* - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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*/
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#include <linux/clk.h>
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#include <linux/dma-mapping.h>
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#include <linux/module.h>
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#include <linux/of_reserved_mem.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_device.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_mode_config.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_vblank.h>
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#include "zynqmp_disp.h"
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#include "zynqmp_dp.h"
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#include "zynqmp_dpsub.h"
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/* -----------------------------------------------------------------------------
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* Dumb Buffer & Framebuffer Allocation
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*/
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static int zynqmp_dpsub_dumb_create(struct drm_file *file_priv,
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struct drm_device *drm,
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struct drm_mode_create_dumb *args)
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{
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struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm);
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unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
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/* Enforce the alignment constraints of the DMA engine. */
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args->pitch = ALIGN(pitch, dpsub->dma_align);
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return drm_gem_cma_dumb_create_internal(file_priv, drm, args);
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}
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static struct drm_framebuffer *
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zynqmp_dpsub_fb_create(struct drm_device *drm, struct drm_file *file_priv,
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const struct drm_mode_fb_cmd2 *mode_cmd)
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{
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struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm);
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struct drm_mode_fb_cmd2 cmd = *mode_cmd;
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unsigned int i;
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/* Enforce the alignment constraints of the DMA engine. */
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for (i = 0; i < ARRAY_SIZE(cmd.pitches); ++i)
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cmd.pitches[i] = ALIGN(cmd.pitches[i], dpsub->dma_align);
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return drm_gem_fb_create(drm, file_priv, &cmd);
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}
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static const struct drm_mode_config_funcs zynqmp_dpsub_mode_config_funcs = {
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.fb_create = zynqmp_dpsub_fb_create,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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/* -----------------------------------------------------------------------------
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* DRM/KMS Driver
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*/
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DEFINE_DRM_GEM_CMA_FOPS(zynqmp_dpsub_drm_fops);
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static const struct drm_driver zynqmp_dpsub_drm_driver = {
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.driver_features = DRIVER_MODESET | DRIVER_GEM |
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DRIVER_ATOMIC,
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DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(zynqmp_dpsub_dumb_create),
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.fops = &zynqmp_dpsub_drm_fops,
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.name = "zynqmp-dpsub",
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.desc = "Xilinx DisplayPort Subsystem Driver",
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.date = "20130509",
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.major = 1,
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.minor = 0,
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};
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static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
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{
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struct drm_device *drm = &dpsub->drm;
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int ret;
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/* Initialize mode config, vblank and the KMS poll helper. */
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ret = drmm_mode_config_init(drm);
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if (ret < 0)
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return ret;
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drm->mode_config.funcs = &zynqmp_dpsub_mode_config_funcs;
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drm->mode_config.min_width = 0;
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drm->mode_config.min_height = 0;
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drm->mode_config.max_width = ZYNQMP_DISP_MAX_WIDTH;
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drm->mode_config.max_height = ZYNQMP_DISP_MAX_HEIGHT;
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ret = drm_vblank_init(drm, 1);
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if (ret)
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return ret;
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drm->irq_enabled = 1;
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drm_kms_helper_poll_init(drm);
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/*
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* Initialize the DISP and DP components. This will creates planes,
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* CRTC, encoder and connector. The DISP should be initialized first as
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* the DP encoder needs the CRTC.
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*/
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ret = zynqmp_disp_drm_init(dpsub);
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if (ret)
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goto err_poll_fini;
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ret = zynqmp_dp_drm_init(dpsub);
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if (ret)
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goto err_poll_fini;
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/* Reset all components and register the DRM device. */
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drm_mode_config_reset(drm);
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ret = drm_dev_register(drm, 0);
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if (ret < 0)
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goto err_poll_fini;
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/* Initialize fbdev generic emulation. */
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drm_fbdev_generic_setup(drm, 24);
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return 0;
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err_poll_fini:
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drm_kms_helper_poll_fini(drm);
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return ret;
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}
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/* -----------------------------------------------------------------------------
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* Power Management
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*/
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static int __maybe_unused zynqmp_dpsub_suspend(struct device *dev)
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{
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struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);
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return drm_mode_config_helper_suspend(&dpsub->drm);
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}
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static int __maybe_unused zynqmp_dpsub_resume(struct device *dev)
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{
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struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);
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return drm_mode_config_helper_resume(&dpsub->drm);
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}
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static const struct dev_pm_ops zynqmp_dpsub_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(zynqmp_dpsub_suspend, zynqmp_dpsub_resume)
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};
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/* -----------------------------------------------------------------------------
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* Probe & Remove
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*/
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static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub)
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{
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int ret;
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dpsub->apb_clk = devm_clk_get(dpsub->dev, "dp_apb_clk");
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if (IS_ERR(dpsub->apb_clk))
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return PTR_ERR(dpsub->apb_clk);
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ret = clk_prepare_enable(dpsub->apb_clk);
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if (ret) {
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dev_err(dpsub->dev, "failed to enable the APB clock\n");
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return ret;
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}
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return 0;
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}
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static int zynqmp_dpsub_probe(struct platform_device *pdev)
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{
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struct zynqmp_dpsub *dpsub;
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int ret;
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/* Allocate private data. */
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dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver,
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struct zynqmp_dpsub, drm);
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if (IS_ERR(dpsub))
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return PTR_ERR(dpsub);
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dpsub->dev = &pdev->dev;
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platform_set_drvdata(pdev, dpsub);
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dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
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/* Try the reserved memory. Proceed if there's none. */
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of_reserved_mem_device_init(&pdev->dev);
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ret = zynqmp_dpsub_init_clocks(dpsub);
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if (ret < 0)
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goto err_mem;
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pm_runtime_enable(&pdev->dev);
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/*
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* DP should be probed first so that the zynqmp_disp can set the output
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* format accordingly.
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*/
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ret = zynqmp_dp_probe(dpsub, &dpsub->drm);
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if (ret)
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goto err_pm;
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ret = zynqmp_disp_probe(dpsub, &dpsub->drm);
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if (ret)
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goto err_dp;
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ret = zynqmp_dpsub_drm_init(dpsub);
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if (ret)
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goto err_disp;
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dev_info(&pdev->dev, "ZynqMP DisplayPort Subsystem driver probed");
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return 0;
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err_disp:
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zynqmp_disp_remove(dpsub);
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err_dp:
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zynqmp_dp_remove(dpsub);
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err_pm:
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pm_runtime_disable(&pdev->dev);
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clk_disable_unprepare(dpsub->apb_clk);
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err_mem:
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of_reserved_mem_device_release(&pdev->dev);
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return ret;
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}
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static int zynqmp_dpsub_remove(struct platform_device *pdev)
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{
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struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);
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struct drm_device *drm = &dpsub->drm;
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drm_dev_unregister(drm);
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drm_atomic_helper_shutdown(drm);
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drm_kms_helper_poll_fini(drm);
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zynqmp_disp_remove(dpsub);
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zynqmp_dp_remove(dpsub);
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pm_runtime_disable(&pdev->dev);
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clk_disable_unprepare(dpsub->apb_clk);
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of_reserved_mem_device_release(&pdev->dev);
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return 0;
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}
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static void zynqmp_dpsub_shutdown(struct platform_device *pdev)
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{
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struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);
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drm_atomic_helper_shutdown(&dpsub->drm);
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}
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static const struct of_device_id zynqmp_dpsub_of_match[] = {
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{ .compatible = "xlnx,zynqmp-dpsub-1.7", },
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{ /* end of table */ },
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};
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MODULE_DEVICE_TABLE(of, zynqmp_dpsub_of_match);
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static struct platform_driver zynqmp_dpsub_driver = {
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.probe = zynqmp_dpsub_probe,
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.remove = zynqmp_dpsub_remove,
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.shutdown = zynqmp_dpsub_shutdown,
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.driver = {
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.name = "zynqmp-dpsub",
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.pm = &zynqmp_dpsub_pm_ops,
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.of_match_table = zynqmp_dpsub_of_match,
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},
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};
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module_platform_driver(zynqmp_dpsub_driver);
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MODULE_AUTHOR("Xilinx, Inc.");
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MODULE_DESCRIPTION("ZynqMP DP Subsystem Driver");
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MODULE_LICENSE("GPL v2");
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