Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Marek Vašut | 1085 | 58.36% | 6 | 20.00% |
Laurent Pinchart | 280 | 15.06% | 6 | 20.00% |
Thomas Zimmermann | 221 | 11.89% | 2 | 6.67% |
Stefan Agner | 103 | 5.54% | 1 | 3.33% |
Leonard Crestez | 102 | 5.49% | 2 | 6.67% |
Robert Chiras | 19 | 1.02% | 1 | 3.33% |
Noralf Trönnes | 10 | 0.54% | 2 | 6.67% |
Sam Ravnborg | 10 | 0.54% | 1 | 3.33% |
Dan Carpenter | 7 | 0.38% | 1 | 3.33% |
Daniel Vetter | 7 | 0.38% | 3 | 10.00% |
Guido Günther | 4 | 0.22% | 1 | 3.33% |
Javier Martinez Canillas | 4 | 0.22% | 1 | 3.33% |
Alexander Stein | 3 | 0.16% | 1 | 3.33% |
Thomas Gleixner | 2 | 0.11% | 1 | 3.33% |
Fernando Ramos | 2 | 0.11% | 1 | 3.33% |
Total | 1859 | 30 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2016 Marek Vasut <marex@denx.de> * * This code is based on drivers/video/fbdev/mxsfb.c : * Copyright (C) 2010 Juergen Beisert, Pengutronix * Copyright (C) 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright (C) 2008 Embedded Alley Solutions, Inc All Rights Reserved. */ #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_connector.h> #include <drm/drm_drv.h> #include <drm/drm_fb_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_mode_config.h> #include <drm/drm_module.h> #include <drm/drm_of.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> #include "mxsfb_drv.h" #include "mxsfb_regs.h" enum mxsfb_devtype { MXSFB_V3, MXSFB_V4, /* * Starting at i.MX6 the hardware version register is gone, use the * i.MX family number as the version. */ MXSFB_V6, }; static const struct mxsfb_devdata mxsfb_devdata[] = { [MXSFB_V3] = { .transfer_count = LCDC_V3_TRANSFER_COUNT, .cur_buf = LCDC_V3_CUR_BUF, .next_buf = LCDC_V3_NEXT_BUF, .hs_wdth_mask = 0xff, .hs_wdth_shift = 24, .has_overlay = false, .has_ctrl2 = false, .has_crc32 = false, }, [MXSFB_V4] = { .transfer_count = LCDC_V4_TRANSFER_COUNT, .cur_buf = LCDC_V4_CUR_BUF, .next_buf = LCDC_V4_NEXT_BUF, .hs_wdth_mask = 0x3fff, .hs_wdth_shift = 18, .has_overlay = false, .has_ctrl2 = true, .has_crc32 = true, }, [MXSFB_V6] = { .transfer_count = LCDC_V4_TRANSFER_COUNT, .cur_buf = LCDC_V4_CUR_BUF, .next_buf = LCDC_V4_NEXT_BUF, .hs_wdth_mask = 0x3fff, .hs_wdth_shift = 18, .has_overlay = true, .has_ctrl2 = true, .has_crc32 = true, }, }; void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb) { if (mxsfb->clk_axi) clk_prepare_enable(mxsfb->clk_axi); } void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb) { if (mxsfb->clk_axi) clk_disable_unprepare(mxsfb->clk_axi); } static struct drm_framebuffer * mxsfb_fb_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd) { const struct drm_format_info *info; info = drm_get_format_info(dev, mode_cmd); if (!info) return ERR_PTR(-EINVAL); if (mode_cmd->width * info->cpp[0] != mode_cmd->pitches[0]) { dev_dbg(dev->dev, "Invalid pitch: fb width must match pitch\n"); return ERR_PTR(-EINVAL); } return drm_gem_fb_create(dev, file_priv, mode_cmd); } static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = { .fb_create = mxsfb_fb_create, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; static const struct drm_mode_config_helper_funcs mxsfb_mode_config_helpers = { .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, }; static int mxsfb_attach_bridge(struct mxsfb_drm_private *mxsfb) { struct drm_device *drm = mxsfb->drm; struct drm_connector_list_iter iter; struct drm_panel *panel; struct drm_bridge *bridge; int ret; ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel, &bridge); if (ret) return ret; if (panel) { bridge = devm_drm_panel_bridge_add_typed(drm->dev, panel, DRM_MODE_CONNECTOR_DPI); if (IS_ERR(bridge)) return PTR_ERR(bridge); } if (!bridge) return -ENODEV; ret = drm_bridge_attach(&mxsfb->encoder, bridge, NULL, 0); if (ret) return dev_err_probe(drm->dev, ret, "Failed to attach bridge\n"); mxsfb->bridge = bridge; /* * Get hold of the connector. This is a bit of a hack, until the bridge * API gives us bus flags and formats. */ drm_connector_list_iter_begin(drm, &iter); mxsfb->connector = drm_connector_list_iter_next(&iter); drm_connector_list_iter_end(&iter); return 0; } static irqreturn_t mxsfb_irq_handler(int irq, void *data) { struct drm_device *drm = data; struct mxsfb_drm_private *mxsfb = drm->dev_private; u32 reg, crc; u64 vbc; reg = readl(mxsfb->base + LCDC_CTRL1); if (reg & CTRL1_CUR_FRAME_DONE_IRQ) { drm_crtc_handle_vblank(&mxsfb->crtc); if (mxsfb->crc_active) { crc = readl(mxsfb->base + LCDC_V4_CRC_STAT); vbc = drm_crtc_accurate_vblank_count(&mxsfb->crtc); drm_crtc_add_crc_entry(&mxsfb->crtc, true, vbc, &crc); } } writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR); return IRQ_HANDLED; } static void mxsfb_irq_disable(struct drm_device *drm) { struct mxsfb_drm_private *mxsfb = drm->dev_private; mxsfb_enable_axi_clk(mxsfb); /* Disable and clear VBLANK IRQ */ writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR); writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR); mxsfb_disable_axi_clk(mxsfb); } static int mxsfb_irq_install(struct drm_device *dev, int irq) { if (irq == IRQ_NOTCONNECTED) return -ENOTCONN; mxsfb_irq_disable(dev); return request_irq(irq, mxsfb_irq_handler, 0, dev->driver->name, dev); } static void mxsfb_irq_uninstall(struct drm_device *dev) { struct mxsfb_drm_private *mxsfb = dev->dev_private; mxsfb_irq_disable(dev); free_irq(mxsfb->irq, dev); } static int mxsfb_load(struct drm_device *drm, const struct mxsfb_devdata *devdata) { struct platform_device *pdev = to_platform_device(drm->dev); struct mxsfb_drm_private *mxsfb; struct resource *res; int ret; mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL); if (!mxsfb) return -ENOMEM; mxsfb->drm = drm; drm->dev_private = mxsfb; mxsfb->devdata = devdata; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); mxsfb->base = devm_ioremap_resource(drm->dev, res); if (IS_ERR(mxsfb->base)) return PTR_ERR(mxsfb->base); mxsfb->clk = devm_clk_get(drm->dev, NULL); if (IS_ERR(mxsfb->clk)) return PTR_ERR(mxsfb->clk); mxsfb->clk_axi = devm_clk_get(drm->dev, "axi"); if (IS_ERR(mxsfb->clk_axi)) mxsfb->clk_axi = NULL; mxsfb->clk_disp_axi = devm_clk_get(drm->dev, "disp_axi"); if (IS_ERR(mxsfb->clk_disp_axi)) mxsfb->clk_disp_axi = NULL; ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32)); if (ret) return ret; pm_runtime_enable(drm->dev); /* Modeset init */ drm_mode_config_init(drm); ret = mxsfb_kms_init(mxsfb); if (ret < 0) { dev_err(drm->dev, "Failed to initialize KMS pipeline\n"); goto err_vblank; } ret = drm_vblank_init(drm, drm->mode_config.num_crtc); if (ret < 0) { dev_err(drm->dev, "Failed to initialise vblank\n"); goto err_vblank; } /* Start with vertical blanking interrupt reporting disabled. */ drm_crtc_vblank_off(&mxsfb->crtc); ret = mxsfb_attach_bridge(mxsfb); if (ret) { dev_err_probe(drm->dev, ret, "Cannot connect bridge\n"); goto err_vblank; } drm->mode_config.min_width = MXSFB_MIN_XRES; drm->mode_config.min_height = MXSFB_MIN_YRES; drm->mode_config.max_width = MXSFB_MAX_XRES; drm->mode_config.max_height = MXSFB_MAX_YRES; drm->mode_config.funcs = &mxsfb_mode_config_funcs; drm->mode_config.helper_private = &mxsfb_mode_config_helpers; drm_mode_config_reset(drm); ret = platform_get_irq(pdev, 0); if (ret < 0) goto err_vblank; mxsfb->irq = ret; pm_runtime_get_sync(drm->dev); ret = mxsfb_irq_install(drm, mxsfb->irq); pm_runtime_put_sync(drm->dev); if (ret < 0) { dev_err(drm->dev, "Failed to install IRQ handler\n"); goto err_vblank; } drm_kms_helper_poll_init(drm); platform_set_drvdata(pdev, drm); drm_helper_hpd_irq_event(drm); return 0; err_vblank: pm_runtime_disable(drm->dev); return ret; } static void mxsfb_unload(struct drm_device *drm) { drm_kms_helper_poll_fini(drm); drm_mode_config_cleanup(drm); pm_runtime_get_sync(drm->dev); mxsfb_irq_uninstall(drm); pm_runtime_put_sync(drm->dev); drm->dev_private = NULL; pm_runtime_disable(drm->dev); } DEFINE_DRM_GEM_CMA_FOPS(fops); static const struct drm_driver mxsfb_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, DRM_GEM_CMA_DRIVER_OPS, .fops = &fops, .name = "mxsfb-drm", .desc = "MXSFB Controller DRM", .date = "20160824", .major = 1, .minor = 0, }; static const struct of_device_id mxsfb_dt_ids[] = { { .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devdata[MXSFB_V3], }, { .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devdata[MXSFB_V4], }, { .compatible = "fsl,imx6sx-lcdif", .data = &mxsfb_devdata[MXSFB_V6], }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mxsfb_dt_ids); static int mxsfb_probe(struct platform_device *pdev) { struct drm_device *drm; const struct of_device_id *of_id = of_match_device(mxsfb_dt_ids, &pdev->dev); int ret; if (!pdev->dev.of_node) return -ENODEV; drm = drm_dev_alloc(&mxsfb_driver, &pdev->dev); if (IS_ERR(drm)) return PTR_ERR(drm); ret = mxsfb_load(drm, of_id->data); if (ret) goto err_free; ret = drm_dev_register(drm, 0); if (ret) goto err_unload; drm_fbdev_generic_setup(drm, 32); return 0; err_unload: mxsfb_unload(drm); err_free: drm_dev_put(drm); return ret; } static int mxsfb_remove(struct platform_device *pdev) { struct drm_device *drm = platform_get_drvdata(pdev); drm_dev_unregister(drm); drm_atomic_helper_shutdown(drm); mxsfb_unload(drm); drm_dev_put(drm); return 0; } static void mxsfb_shutdown(struct platform_device *pdev) { struct drm_device *drm = platform_get_drvdata(pdev); drm_atomic_helper_shutdown(drm); } #ifdef CONFIG_PM_SLEEP static int mxsfb_suspend(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); return drm_mode_config_helper_suspend(drm); } static int mxsfb_resume(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); return drm_mode_config_helper_resume(drm); } #endif static const struct dev_pm_ops mxsfb_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(mxsfb_suspend, mxsfb_resume) }; static struct platform_driver mxsfb_platform_driver = { .probe = mxsfb_probe, .remove = mxsfb_remove, .shutdown = mxsfb_shutdown, .driver = { .name = "mxsfb", .of_match_table = mxsfb_dt_ids, .pm = &mxsfb_pm_ops, }, }; drm_module_platform_driver(mxsfb_platform_driver); MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); MODULE_DESCRIPTION("Freescale MXS DRM/KMS driver"); MODULE_LICENSE("GPL");
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