Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Jianwei Wang | 1064 | 67.26% | 1 | 2.63% |
Stefan Agner | 387 | 24.46% | 21 | 55.26% |
Thomas Zimmermann | 72 | 4.55% | 3 | 7.89% |
Noralf Trönnes | 19 | 1.20% | 2 | 5.26% |
Daniel Vetter | 15 | 0.95% | 4 | 10.53% |
Tom Gundersen | 7 | 0.44% | 1 | 2.63% |
Sam Ravnborg | 5 | 0.32% | 1 | 2.63% |
Javier Martinez Canillas | 4 | 0.25% | 1 | 2.63% |
Fabio Estevam | 3 | 0.19% | 1 | 2.63% |
Danilo Krummrich | 3 | 0.19% | 1 | 2.63% |
Thomas Gleixner | 2 | 0.13% | 1 | 2.63% |
Gabriel Krisman Bertazi | 1 | 0.06% | 1 | 2.63% |
Total | 1582 | 38 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2015 Freescale Semiconductor, Inc. * * Freescale DCU drm device driver */ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/console.h> #include <linux/io.h> #include <linux/mfd/syscon.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_drv.h> #include <drm/drm_fbdev_generic.h> #include <drm/drm_gem_dma_helper.h> #include <drm/drm_modeset_helper.h> #include <drm/drm_module.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> #include "fsl_dcu_drm_crtc.h" #include "fsl_dcu_drm_drv.h" #include "fsl_tcon.h" static int legacyfb_depth = 24; module_param(legacyfb_depth, int, 0444); static bool fsl_dcu_drm_is_volatile_reg(struct device *dev, unsigned int reg) { if (reg == DCU_INT_STATUS || reg == DCU_UPDATE_MODE) return true; return false; } static const struct regmap_config fsl_dcu_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .volatile_reg = fsl_dcu_drm_is_volatile_reg, }; static void fsl_dcu_irq_reset(struct drm_device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; regmap_write(fsl_dev->regmap, DCU_INT_STATUS, ~0); regmap_write(fsl_dev->regmap, DCU_INT_MASK, ~0); } static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg) { struct drm_device *dev = arg; struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; unsigned int int_status; int ret; ret = regmap_read(fsl_dev->regmap, DCU_INT_STATUS, &int_status); if (ret) { dev_err(dev->dev, "read DCU_INT_STATUS failed\n"); return IRQ_NONE; } if (int_status & DCU_INT_STATUS_VBLANK) drm_handle_vblank(dev, 0); regmap_write(fsl_dev->regmap, DCU_INT_STATUS, int_status); return IRQ_HANDLED; } static int fsl_dcu_irq_install(struct drm_device *dev, unsigned int irq) { if (irq == IRQ_NOTCONNECTED) return -ENOTCONN; fsl_dcu_irq_reset(dev); return request_irq(irq, fsl_dcu_drm_irq, 0, dev->driver->name, dev); } static void fsl_dcu_irq_uninstall(struct drm_device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; fsl_dcu_irq_reset(dev); free_irq(fsl_dev->irq, dev); } static int fsl_dcu_load(struct drm_device *dev, unsigned long flags) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; int ret; ret = fsl_dcu_drm_modeset_init(fsl_dev); if (ret < 0) { dev_err(dev->dev, "failed to initialize mode setting\n"); return ret; } ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret < 0) { dev_err(dev->dev, "failed to initialize vblank\n"); goto done_vblank; } ret = fsl_dcu_irq_install(dev, fsl_dev->irq); if (ret < 0) { dev_err(dev->dev, "failed to install IRQ handler\n"); goto done_irq; } if (legacyfb_depth != 16 && legacyfb_depth != 24 && legacyfb_depth != 32) { dev_warn(dev->dev, "Invalid legacyfb_depth. Defaulting to 24bpp\n"); legacyfb_depth = 24; } return 0; done_irq: drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); done_vblank: dev->dev_private = NULL; return ret; } static void fsl_dcu_unload(struct drm_device *dev) { drm_atomic_helper_shutdown(dev); drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); fsl_dcu_irq_uninstall(dev); dev->dev_private = NULL; } DEFINE_DRM_GEM_DMA_FOPS(fsl_dcu_drm_fops); static const struct drm_driver fsl_dcu_drm_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, .load = fsl_dcu_load, .unload = fsl_dcu_unload, DRM_GEM_DMA_DRIVER_OPS, .fops = &fsl_dcu_drm_fops, .name = "fsl-dcu-drm", .desc = "Freescale DCU DRM", .date = "20160425", .major = 1, .minor = 1, }; #ifdef CONFIG_PM_SLEEP static int fsl_dcu_drm_pm_suspend(struct device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev); int ret; if (!fsl_dev) return 0; disable_irq(fsl_dev->irq); ret = drm_mode_config_helper_suspend(fsl_dev->drm); if (ret) { enable_irq(fsl_dev->irq); return ret; } clk_disable_unprepare(fsl_dev->clk); return 0; } static int fsl_dcu_drm_pm_resume(struct device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev); int ret; if (!fsl_dev) return 0; ret = clk_prepare_enable(fsl_dev->clk); if (ret < 0) { dev_err(dev, "failed to enable dcu clk\n"); return ret; } if (fsl_dev->tcon) fsl_tcon_bypass_enable(fsl_dev->tcon); fsl_dcu_drm_init_planes(fsl_dev->drm); enable_irq(fsl_dev->irq); drm_mode_config_helper_resume(fsl_dev->drm); return 0; } #endif static const struct dev_pm_ops fsl_dcu_drm_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(fsl_dcu_drm_pm_suspend, fsl_dcu_drm_pm_resume) }; static const struct fsl_dcu_soc_data fsl_dcu_ls1021a_data = { .name = "ls1021a", .total_layer = 16, .max_layer = 4, .layer_regs = LS1021A_LAYER_REG_NUM, }; static const struct fsl_dcu_soc_data fsl_dcu_vf610_data = { .name = "vf610", .total_layer = 64, .max_layer = 6, .layer_regs = VF610_LAYER_REG_NUM, }; static const struct of_device_id fsl_dcu_of_match[] = { { .compatible = "fsl,ls1021a-dcu", .data = &fsl_dcu_ls1021a_data, }, { .compatible = "fsl,vf610-dcu", .data = &fsl_dcu_vf610_data, }, { }, }; MODULE_DEVICE_TABLE(of, fsl_dcu_of_match); static int fsl_dcu_drm_probe(struct platform_device *pdev) { struct fsl_dcu_drm_device *fsl_dev; struct drm_device *drm; struct device *dev = &pdev->dev; struct resource *res; void __iomem *base; struct clk *pix_clk_in; char pix_clk_name[32]; const char *pix_clk_in_name; const struct of_device_id *id; int ret; u8 div_ratio_shift = 0; fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL); if (!fsl_dev) return -ENOMEM; id = of_match_node(fsl_dcu_of_match, pdev->dev.of_node); if (!id) return -ENODEV; fsl_dev->soc = id->data; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) { ret = PTR_ERR(base); return ret; } fsl_dev->irq = platform_get_irq(pdev, 0); if (fsl_dev->irq < 0) { dev_err(dev, "failed to get irq\n"); return fsl_dev->irq; } fsl_dev->regmap = devm_regmap_init_mmio(dev, base, &fsl_dcu_regmap_config); if (IS_ERR(fsl_dev->regmap)) { dev_err(dev, "regmap init failed\n"); return PTR_ERR(fsl_dev->regmap); } fsl_dev->clk = devm_clk_get(dev, "dcu"); if (IS_ERR(fsl_dev->clk)) { dev_err(dev, "failed to get dcu clock\n"); return PTR_ERR(fsl_dev->clk); } ret = clk_prepare_enable(fsl_dev->clk); if (ret < 0) { dev_err(dev, "failed to enable dcu clk\n"); return ret; } pix_clk_in = devm_clk_get(dev, "pix"); if (IS_ERR(pix_clk_in)) { /* legancy binding, use dcu clock as pixel clock input */ pix_clk_in = fsl_dev->clk; } if (of_property_read_bool(dev->of_node, "big-endian")) div_ratio_shift = 24; pix_clk_in_name = __clk_get_name(pix_clk_in); snprintf(pix_clk_name, sizeof(pix_clk_name), "%s_pix", pix_clk_in_name); fsl_dev->pix_clk = clk_register_divider(dev, pix_clk_name, pix_clk_in_name, 0, base + DCU_DIV_RATIO, div_ratio_shift, 8, CLK_DIVIDER_ROUND_CLOSEST, NULL); if (IS_ERR(fsl_dev->pix_clk)) { dev_err(dev, "failed to register pix clk\n"); ret = PTR_ERR(fsl_dev->pix_clk); goto disable_clk; } fsl_dev->tcon = fsl_tcon_init(dev); drm = drm_dev_alloc(&fsl_dcu_drm_driver, dev); if (IS_ERR(drm)) { ret = PTR_ERR(drm); goto unregister_pix_clk; } fsl_dev->dev = dev; fsl_dev->drm = drm; fsl_dev->np = dev->of_node; drm->dev_private = fsl_dev; dev_set_drvdata(dev, fsl_dev); ret = drm_dev_register(drm, 0); if (ret < 0) goto put; drm_fbdev_generic_setup(drm, legacyfb_depth); return 0; put: drm_dev_put(drm); unregister_pix_clk: clk_unregister(fsl_dev->pix_clk); disable_clk: clk_disable_unprepare(fsl_dev->clk); return ret; } static int fsl_dcu_drm_remove(struct platform_device *pdev) { struct fsl_dcu_drm_device *fsl_dev = platform_get_drvdata(pdev); drm_dev_unregister(fsl_dev->drm); drm_dev_put(fsl_dev->drm); clk_disable_unprepare(fsl_dev->clk); clk_unregister(fsl_dev->pix_clk); return 0; } static struct platform_driver fsl_dcu_drm_platform_driver = { .probe = fsl_dcu_drm_probe, .remove = fsl_dcu_drm_remove, .driver = { .name = "fsl-dcu", .pm = &fsl_dcu_drm_pm_ops, .of_match_table = fsl_dcu_of_match, }, }; drm_module_platform_driver(fsl_dcu_drm_platform_driver); MODULE_DESCRIPTION("Freescale DCU DRM Driver"); MODULE_LICENSE("GPL");
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