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	Fixed MTP to work with TWRP
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								drivers/gpu/drm/tilcdc/tilcdc_drv.c
									
										
									
									
									
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								drivers/gpu/drm/tilcdc/tilcdc_drv.c
									
										
									
									
									
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							|  | @ -0,0 +1,678 @@ | |||
| /*
 | ||||
|  * Copyright (C) 2012 Texas Instruments | ||||
|  * Author: Rob Clark <robdclark@gmail.com> | ||||
|  * | ||||
|  * This program is free software; you can redistribute it and/or modify it | ||||
|  * under the terms of the GNU General Public License version 2 as published by | ||||
|  * the Free Software Foundation. | ||||
|  * | ||||
|  * This program is distributed in the hope that it will be useful, but WITHOUT | ||||
|  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||||
|  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for | ||||
|  * more details. | ||||
|  * | ||||
|  * You should have received a copy of the GNU General Public License along with | ||||
|  * this program.  If not, see <http://www.gnu.org/licenses/>.
 | ||||
|  */ | ||||
| 
 | ||||
| /* LCDC DRM driver, based on da8xx-fb */ | ||||
| 
 | ||||
| #include "tilcdc_drv.h" | ||||
| #include "tilcdc_regs.h" | ||||
| #include "tilcdc_tfp410.h" | ||||
| #include "tilcdc_slave.h" | ||||
| #include "tilcdc_panel.h" | ||||
| 
 | ||||
| #include "drm_fb_helper.h" | ||||
| 
 | ||||
| static LIST_HEAD(module_list); | ||||
| static bool slave_probing; | ||||
| 
 | ||||
| void tilcdc_module_init(struct tilcdc_module *mod, const char *name, | ||||
| 		const struct tilcdc_module_ops *funcs) | ||||
| { | ||||
| 	mod->name = name; | ||||
| 	mod->funcs = funcs; | ||||
| 	INIT_LIST_HEAD(&mod->list); | ||||
| 	list_add(&mod->list, &module_list); | ||||
| } | ||||
| 
 | ||||
| void tilcdc_module_cleanup(struct tilcdc_module *mod) | ||||
| { | ||||
| 	list_del(&mod->list); | ||||
| } | ||||
| 
 | ||||
| void tilcdc_slave_probedefer(bool defered) | ||||
| { | ||||
| 	slave_probing = defered; | ||||
| } | ||||
| 
 | ||||
| static struct of_device_id tilcdc_of_match[]; | ||||
| 
 | ||||
| static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev, | ||||
| 		struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) | ||||
| { | ||||
| 	return drm_fb_cma_create(dev, file_priv, mode_cmd); | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_fb_output_poll_changed(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	if (priv->fbdev) | ||||
| 		drm_fbdev_cma_hotplug_event(priv->fbdev); | ||||
| } | ||||
| 
 | ||||
| static const struct drm_mode_config_funcs mode_config_funcs = { | ||||
| 	.fb_create = tilcdc_fb_create, | ||||
| 	.output_poll_changed = tilcdc_fb_output_poll_changed, | ||||
| }; | ||||
| 
 | ||||
| static int modeset_init(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	struct tilcdc_module *mod; | ||||
| 
 | ||||
| 	drm_mode_config_init(dev); | ||||
| 
 | ||||
| 	priv->crtc = tilcdc_crtc_create(dev); | ||||
| 
 | ||||
| 	list_for_each_entry(mod, &module_list, list) { | ||||
| 		DBG("loading module: %s", mod->name); | ||||
| 		mod->funcs->modeset_init(mod, dev); | ||||
| 	} | ||||
| 
 | ||||
| 	if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) { | ||||
| 		/* oh nos! */ | ||||
| 		dev_err(dev->dev, "no encoders/connectors found\n"); | ||||
| 		drm_mode_config_cleanup(dev); | ||||
| 		return -ENXIO; | ||||
| 	} | ||||
| 
 | ||||
| 	dev->mode_config.min_width = 0; | ||||
| 	dev->mode_config.min_height = 0; | ||||
| 	dev->mode_config.max_width = tilcdc_crtc_max_width(priv->crtc); | ||||
| 	dev->mode_config.max_height = 2048; | ||||
| 	dev->mode_config.funcs = &mode_config_funcs; | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| #ifdef CONFIG_CPU_FREQ | ||||
| static int cpufreq_transition(struct notifier_block *nb, | ||||
| 				     unsigned long val, void *data) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = container_of(nb, | ||||
| 			struct tilcdc_drm_private, freq_transition); | ||||
| 	if (val == CPUFREQ_POSTCHANGE) { | ||||
| 		if (priv->lcd_fck_rate != clk_get_rate(priv->clk)) { | ||||
| 			priv->lcd_fck_rate = clk_get_rate(priv->clk); | ||||
| 			tilcdc_crtc_update_clk(priv->crtc); | ||||
| 		} | ||||
| 	} | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| #endif | ||||
| 
 | ||||
| /*
 | ||||
|  * DRM operations: | ||||
|  */ | ||||
| 
 | ||||
| static int tilcdc_unload(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 
 | ||||
| 	drm_fbdev_cma_fini(priv->fbdev); | ||||
| 	drm_kms_helper_poll_fini(dev); | ||||
| 	drm_mode_config_cleanup(dev); | ||||
| 	drm_vblank_cleanup(dev); | ||||
| 
 | ||||
| 	pm_runtime_get_sync(dev->dev); | ||||
| 	drm_irq_uninstall(dev); | ||||
| 	pm_runtime_put_sync(dev->dev); | ||||
| 
 | ||||
| #ifdef CONFIG_CPU_FREQ | ||||
| 	cpufreq_unregister_notifier(&priv->freq_transition, | ||||
| 			CPUFREQ_TRANSITION_NOTIFIER); | ||||
| #endif | ||||
| 
 | ||||
| 	if (priv->clk) | ||||
| 		clk_put(priv->clk); | ||||
| 
 | ||||
| 	if (priv->mmio) | ||||
| 		iounmap(priv->mmio); | ||||
| 
 | ||||
| 	flush_workqueue(priv->wq); | ||||
| 	destroy_workqueue(priv->wq); | ||||
| 
 | ||||
| 	dev->dev_private = NULL; | ||||
| 
 | ||||
| 	pm_runtime_disable(dev->dev); | ||||
| 
 | ||||
| 	kfree(priv); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_load(struct drm_device *dev, unsigned long flags) | ||||
| { | ||||
| 	struct platform_device *pdev = dev->platformdev; | ||||
| 	struct device_node *node = pdev->dev.of_node; | ||||
| 	struct tilcdc_drm_private *priv; | ||||
| 	struct tilcdc_module *mod; | ||||
| 	struct resource *res; | ||||
| 	u32 bpp = 0; | ||||
| 	int ret; | ||||
| 
 | ||||
| 	priv = kzalloc(sizeof(*priv), GFP_KERNEL); | ||||
| 	if (!priv) { | ||||
| 		dev_err(dev->dev, "failed to allocate private data\n"); | ||||
| 		return -ENOMEM; | ||||
| 	} | ||||
| 
 | ||||
| 	dev->dev_private = priv; | ||||
| 
 | ||||
| 	priv->wq = alloc_ordered_workqueue("tilcdc", 0); | ||||
| 	if (!priv->wq) { | ||||
| 		ret = -ENOMEM; | ||||
| 		goto fail_free_priv; | ||||
| 	} | ||||
| 
 | ||||
| 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||||
| 	if (!res) { | ||||
| 		dev_err(dev->dev, "failed to get memory resource\n"); | ||||
| 		ret = -EINVAL; | ||||
| 		goto fail_free_wq; | ||||
| 	} | ||||
| 
 | ||||
| 	priv->mmio = ioremap_nocache(res->start, resource_size(res)); | ||||
| 	if (!priv->mmio) { | ||||
| 		dev_err(dev->dev, "failed to ioremap\n"); | ||||
| 		ret = -ENOMEM; | ||||
| 		goto fail_free_wq; | ||||
| 	} | ||||
| 
 | ||||
| 	priv->clk = clk_get(dev->dev, "fck"); | ||||
| 	if (IS_ERR(priv->clk)) { | ||||
| 		dev_err(dev->dev, "failed to get functional clock\n"); | ||||
| 		ret = -ENODEV; | ||||
| 		goto fail_iounmap; | ||||
| 	} | ||||
| 
 | ||||
| 	priv->disp_clk = clk_get(dev->dev, "dpll_disp_ck"); | ||||
| 	if (IS_ERR(priv->clk)) { | ||||
| 		dev_err(dev->dev, "failed to get display clock\n"); | ||||
| 		ret = -ENODEV; | ||||
| 		goto fail_put_clk; | ||||
| 	} | ||||
| 
 | ||||
| #ifdef CONFIG_CPU_FREQ | ||||
| 	priv->lcd_fck_rate = clk_get_rate(priv->clk); | ||||
| 	priv->freq_transition.notifier_call = cpufreq_transition; | ||||
| 	ret = cpufreq_register_notifier(&priv->freq_transition, | ||||
| 			CPUFREQ_TRANSITION_NOTIFIER); | ||||
| 	if (ret) { | ||||
| 		dev_err(dev->dev, "failed to register cpufreq notifier\n"); | ||||
| 		goto fail_put_disp_clk; | ||||
| 	} | ||||
| #endif | ||||
| 
 | ||||
| 	if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth)) | ||||
| 		priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH; | ||||
| 
 | ||||
| 	DBG("Maximum Bandwidth Value %d", priv->max_bandwidth); | ||||
| 
 | ||||
| 	if (of_property_read_u32(node, "ti,max-width", &priv->max_width)) | ||||
| 		priv->max_width = TILCDC_DEFAULT_MAX_WIDTH; | ||||
| 
 | ||||
| 	DBG("Maximum Horizontal Pixel Width Value %dpixels", priv->max_width); | ||||
| 
 | ||||
| 	if (of_property_read_u32(node, "ti,max-pixelclock", | ||||
| 					&priv->max_pixelclock)) | ||||
| 		priv->max_pixelclock = TILCDC_DEFAULT_MAX_PIXELCLOCK; | ||||
| 
 | ||||
| 	DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock); | ||||
| 
 | ||||
| 	pm_runtime_enable(dev->dev); | ||||
| 
 | ||||
| 	/* Determine LCD IP Version */ | ||||
| 	pm_runtime_get_sync(dev->dev); | ||||
| 	switch (tilcdc_read(dev, LCDC_PID_REG)) { | ||||
| 	case 0x4c100102: | ||||
| 		priv->rev = 1; | ||||
| 		break; | ||||
| 	case 0x4f200800: | ||||
| 	case 0x4f201000: | ||||
| 		priv->rev = 2; | ||||
| 		break; | ||||
| 	default: | ||||
| 		dev_warn(dev->dev, "Unknown PID Reg value 0x%08x, " | ||||
| 				"defaulting to LCD revision 1\n", | ||||
| 				tilcdc_read(dev, LCDC_PID_REG)); | ||||
| 		priv->rev = 1; | ||||
| 		break; | ||||
| 	} | ||||
| 
 | ||||
| 	pm_runtime_put_sync(dev->dev); | ||||
| 
 | ||||
| 	ret = modeset_init(dev); | ||||
| 	if (ret < 0) { | ||||
| 		dev_err(dev->dev, "failed to initialize mode setting\n"); | ||||
| 		goto fail_cpufreq_unregister; | ||||
| 	} | ||||
| 
 | ||||
| 	ret = drm_vblank_init(dev, 1); | ||||
| 	if (ret < 0) { | ||||
| 		dev_err(dev->dev, "failed to initialize vblank\n"); | ||||
| 		goto fail_mode_config_cleanup; | ||||
| 	} | ||||
| 
 | ||||
| 	pm_runtime_get_sync(dev->dev); | ||||
| 	ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0)); | ||||
| 	pm_runtime_put_sync(dev->dev); | ||||
| 	if (ret < 0) { | ||||
| 		dev_err(dev->dev, "failed to install IRQ handler\n"); | ||||
| 		goto fail_vblank_cleanup; | ||||
| 	} | ||||
| 
 | ||||
| 	platform_set_drvdata(pdev, dev); | ||||
| 
 | ||||
| 
 | ||||
| 	list_for_each_entry(mod, &module_list, list) { | ||||
| 		DBG("%s: preferred_bpp: %d", mod->name, mod->preferred_bpp); | ||||
| 		bpp = mod->preferred_bpp; | ||||
| 		if (bpp > 0) | ||||
| 			break; | ||||
| 	} | ||||
| 
 | ||||
| 	priv->fbdev = drm_fbdev_cma_init(dev, bpp, | ||||
| 			dev->mode_config.num_crtc, | ||||
| 			dev->mode_config.num_connector); | ||||
| 	if (IS_ERR(priv->fbdev)) { | ||||
| 		ret = PTR_ERR(priv->fbdev); | ||||
| 		goto fail_irq_uninstall; | ||||
| 	} | ||||
| 
 | ||||
| 	drm_kms_helper_poll_init(dev); | ||||
| 
 | ||||
| 	return 0; | ||||
| 
 | ||||
| fail_irq_uninstall: | ||||
| 	pm_runtime_get_sync(dev->dev); | ||||
| 	drm_irq_uninstall(dev); | ||||
| 	pm_runtime_put_sync(dev->dev); | ||||
| 
 | ||||
| fail_vblank_cleanup: | ||||
| 	drm_vblank_cleanup(dev); | ||||
| 
 | ||||
| fail_mode_config_cleanup: | ||||
| 	drm_mode_config_cleanup(dev); | ||||
| 
 | ||||
| fail_cpufreq_unregister: | ||||
| 	pm_runtime_disable(dev->dev); | ||||
| #ifdef CONFIG_CPU_FREQ | ||||
| 	cpufreq_unregister_notifier(&priv->freq_transition, | ||||
| 			CPUFREQ_TRANSITION_NOTIFIER); | ||||
| fail_put_disp_clk: | ||||
| 	clk_put(priv->disp_clk); | ||||
| #endif | ||||
| 
 | ||||
| fail_put_clk: | ||||
| 	clk_put(priv->clk); | ||||
| 
 | ||||
| fail_iounmap: | ||||
| 	iounmap(priv->mmio); | ||||
| 
 | ||||
| fail_free_wq: | ||||
| 	flush_workqueue(priv->wq); | ||||
| 	destroy_workqueue(priv->wq); | ||||
| 
 | ||||
| fail_free_priv: | ||||
| 	dev->dev_private = NULL; | ||||
| 	kfree(priv); | ||||
| 	return ret; | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_preclose(struct drm_device *dev, struct drm_file *file) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 
 | ||||
| 	tilcdc_crtc_cancel_page_flip(priv->crtc, file); | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_lastclose(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	drm_fbdev_cma_restore_mode(priv->fbdev); | ||||
| } | ||||
| 
 | ||||
| static irqreturn_t tilcdc_irq(int irq, void *arg) | ||||
| { | ||||
| 	struct drm_device *dev = arg; | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	return tilcdc_crtc_irq(priv->crtc); | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_irq_preinstall(struct drm_device *dev) | ||||
| { | ||||
| 	tilcdc_clear_irqstatus(dev, 0xffffffff); | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_irq_postinstall(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 
 | ||||
| 	/* enable FIFO underflow irq: */ | ||||
| 	if (priv->rev == 1) | ||||
| 		tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_V1_UNDERFLOW_INT_ENA); | ||||
| 	else | ||||
| 		tilcdc_set(dev, LCDC_INT_ENABLE_SET_REG, LCDC_V2_UNDERFLOW_INT_ENA); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_irq_uninstall(struct drm_device *dev) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 
 | ||||
| 	/* disable irqs that we might have enabled: */ | ||||
| 	if (priv->rev == 1) { | ||||
| 		tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, | ||||
| 				LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA); | ||||
| 		tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA); | ||||
| 	} else { | ||||
| 		tilcdc_clear(dev, LCDC_INT_ENABLE_SET_REG, | ||||
| 			LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA | | ||||
| 			LCDC_V2_END_OF_FRAME0_INT_ENA | LCDC_V2_END_OF_FRAME1_INT_ENA | | ||||
| 			LCDC_FRAME_DONE); | ||||
| 	} | ||||
| 
 | ||||
| } | ||||
| 
 | ||||
| static void enable_vblank(struct drm_device *dev, bool enable) | ||||
| { | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	u32 reg, mask; | ||||
| 
 | ||||
| 	if (priv->rev == 1) { | ||||
| 		reg = LCDC_DMA_CTRL_REG; | ||||
| 		mask = LCDC_V1_END_OF_FRAME_INT_ENA; | ||||
| 	} else { | ||||
| 		reg = LCDC_INT_ENABLE_SET_REG; | ||||
| 		mask = LCDC_V2_END_OF_FRAME0_INT_ENA | | ||||
| 			LCDC_V2_END_OF_FRAME1_INT_ENA | LCDC_FRAME_DONE; | ||||
| 	} | ||||
| 
 | ||||
| 	if (enable) | ||||
| 		tilcdc_set(dev, reg, mask); | ||||
| 	else | ||||
| 		tilcdc_clear(dev, reg, mask); | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_enable_vblank(struct drm_device *dev, int crtc) | ||||
| { | ||||
| 	enable_vblank(dev, true); | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_disable_vblank(struct drm_device *dev, int crtc) | ||||
| { | ||||
| 	enable_vblank(dev, false); | ||||
| } | ||||
| 
 | ||||
| #if defined(CONFIG_DEBUG_FS) || defined(CONFIG_PM_SLEEP) | ||||
| static const struct { | ||||
| 	const char *name; | ||||
| 	uint8_t  rev; | ||||
| 	uint8_t  save; | ||||
| 	uint32_t reg; | ||||
| } registers[] =		{ | ||||
| #define REG(rev, save, reg) { #reg, rev, save, reg } | ||||
| 		/* exists in revision 1: */ | ||||
| 		REG(1, false, LCDC_PID_REG), | ||||
| 		REG(1, true,  LCDC_CTRL_REG), | ||||
| 		REG(1, false, LCDC_STAT_REG), | ||||
| 		REG(1, true,  LCDC_RASTER_CTRL_REG), | ||||
| 		REG(1, true,  LCDC_RASTER_TIMING_0_REG), | ||||
| 		REG(1, true,  LCDC_RASTER_TIMING_1_REG), | ||||
| 		REG(1, true,  LCDC_RASTER_TIMING_2_REG), | ||||
| 		REG(1, true,  LCDC_DMA_CTRL_REG), | ||||
| 		REG(1, true,  LCDC_DMA_FB_BASE_ADDR_0_REG), | ||||
| 		REG(1, true,  LCDC_DMA_FB_CEILING_ADDR_0_REG), | ||||
| 		REG(1, true,  LCDC_DMA_FB_BASE_ADDR_1_REG), | ||||
| 		REG(1, true,  LCDC_DMA_FB_CEILING_ADDR_1_REG), | ||||
| 		/* new in revision 2: */ | ||||
| 		REG(2, false, LCDC_RAW_STAT_REG), | ||||
| 		REG(2, false, LCDC_MASKED_STAT_REG), | ||||
| 		REG(2, false, LCDC_INT_ENABLE_SET_REG), | ||||
| 		REG(2, false, LCDC_INT_ENABLE_CLR_REG), | ||||
| 		REG(2, false, LCDC_END_OF_INT_IND_REG), | ||||
| 		REG(2, true,  LCDC_CLK_ENABLE_REG), | ||||
| 		REG(2, true,  LCDC_INT_ENABLE_SET_REG), | ||||
| #undef REG | ||||
| }; | ||||
| #endif | ||||
| 
 | ||||
| #ifdef CONFIG_DEBUG_FS | ||||
| static int tilcdc_regs_show(struct seq_file *m, void *arg) | ||||
| { | ||||
| 	struct drm_info_node *node = (struct drm_info_node *) m->private; | ||||
| 	struct drm_device *dev = node->minor->dev; | ||||
| 	struct tilcdc_drm_private *priv = dev->dev_private; | ||||
| 	unsigned i; | ||||
| 
 | ||||
| 	pm_runtime_get_sync(dev->dev); | ||||
| 
 | ||||
| 	seq_printf(m, "revision: %d\n", priv->rev); | ||||
| 
 | ||||
| 	for (i = 0; i < ARRAY_SIZE(registers); i++) | ||||
| 		if (priv->rev >= registers[i].rev) | ||||
| 			seq_printf(m, "%s:\t %08x\n", registers[i].name, | ||||
| 					tilcdc_read(dev, registers[i].reg)); | ||||
| 
 | ||||
| 	pm_runtime_put_sync(dev->dev); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_mm_show(struct seq_file *m, void *arg) | ||||
| { | ||||
| 	struct drm_info_node *node = (struct drm_info_node *) m->private; | ||||
| 	struct drm_device *dev = node->minor->dev; | ||||
| 	return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm); | ||||
| } | ||||
| 
 | ||||
| static struct drm_info_list tilcdc_debugfs_list[] = { | ||||
| 		{ "regs", tilcdc_regs_show, 0 }, | ||||
| 		{ "mm",   tilcdc_mm_show,   0 }, | ||||
| 		{ "fb",   drm_fb_cma_debugfs_show, 0 }, | ||||
| }; | ||||
| 
 | ||||
| static int tilcdc_debugfs_init(struct drm_minor *minor) | ||||
| { | ||||
| 	struct drm_device *dev = minor->dev; | ||||
| 	struct tilcdc_module *mod; | ||||
| 	int ret; | ||||
| 
 | ||||
| 	ret = drm_debugfs_create_files(tilcdc_debugfs_list, | ||||
| 			ARRAY_SIZE(tilcdc_debugfs_list), | ||||
| 			minor->debugfs_root, minor); | ||||
| 
 | ||||
| 	list_for_each_entry(mod, &module_list, list) | ||||
| 		if (mod->funcs->debugfs_init) | ||||
| 			mod->funcs->debugfs_init(mod, minor); | ||||
| 
 | ||||
| 	if (ret) { | ||||
| 		dev_err(dev->dev, "could not install tilcdc_debugfs_list\n"); | ||||
| 		return ret; | ||||
| 	} | ||||
| 
 | ||||
| 	return ret; | ||||
| } | ||||
| 
 | ||||
| static void tilcdc_debugfs_cleanup(struct drm_minor *minor) | ||||
| { | ||||
| 	struct tilcdc_module *mod; | ||||
| 	drm_debugfs_remove_files(tilcdc_debugfs_list, | ||||
| 			ARRAY_SIZE(tilcdc_debugfs_list), minor); | ||||
| 
 | ||||
| 	list_for_each_entry(mod, &module_list, list) | ||||
| 		if (mod->funcs->debugfs_cleanup) | ||||
| 			mod->funcs->debugfs_cleanup(mod, minor); | ||||
| } | ||||
| #endif | ||||
| 
 | ||||
| static const struct file_operations fops = { | ||||
| 	.owner              = THIS_MODULE, | ||||
| 	.open               = drm_open, | ||||
| 	.release            = drm_release, | ||||
| 	.unlocked_ioctl     = drm_ioctl, | ||||
| #ifdef CONFIG_COMPAT | ||||
| 	.compat_ioctl       = drm_compat_ioctl, | ||||
| #endif | ||||
| 	.poll               = drm_poll, | ||||
| 	.read               = drm_read, | ||||
| 	.llseek             = no_llseek, | ||||
| 	.mmap               = drm_gem_cma_mmap, | ||||
| }; | ||||
| 
 | ||||
| static struct drm_driver tilcdc_driver = { | ||||
| 	.driver_features    = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET, | ||||
| 	.load               = tilcdc_load, | ||||
| 	.unload             = tilcdc_unload, | ||||
| 	.preclose           = tilcdc_preclose, | ||||
| 	.lastclose          = tilcdc_lastclose, | ||||
| 	.set_busid          = drm_platform_set_busid, | ||||
| 	.irq_handler        = tilcdc_irq, | ||||
| 	.irq_preinstall     = tilcdc_irq_preinstall, | ||||
| 	.irq_postinstall    = tilcdc_irq_postinstall, | ||||
| 	.irq_uninstall      = tilcdc_irq_uninstall, | ||||
| 	.get_vblank_counter = drm_vblank_count, | ||||
| 	.enable_vblank      = tilcdc_enable_vblank, | ||||
| 	.disable_vblank     = tilcdc_disable_vblank, | ||||
| 	.gem_free_object    = drm_gem_cma_free_object, | ||||
| 	.gem_vm_ops         = &drm_gem_cma_vm_ops, | ||||
| 	.dumb_create        = drm_gem_cma_dumb_create, | ||||
| 	.dumb_map_offset    = drm_gem_cma_dumb_map_offset, | ||||
| 	.dumb_destroy       = drm_gem_dumb_destroy, | ||||
| #ifdef CONFIG_DEBUG_FS | ||||
| 	.debugfs_init       = tilcdc_debugfs_init, | ||||
| 	.debugfs_cleanup    = tilcdc_debugfs_cleanup, | ||||
| #endif | ||||
| 	.fops               = &fops, | ||||
| 	.name               = "tilcdc", | ||||
| 	.desc               = "TI LCD Controller DRM", | ||||
| 	.date               = "20121205", | ||||
| 	.major              = 1, | ||||
| 	.minor              = 0, | ||||
| }; | ||||
| 
 | ||||
| /*
 | ||||
|  * Power management: | ||||
|  */ | ||||
| 
 | ||||
| #ifdef CONFIG_PM_SLEEP | ||||
| static int tilcdc_pm_suspend(struct device *dev) | ||||
| { | ||||
| 	struct drm_device *ddev = dev_get_drvdata(dev); | ||||
| 	struct tilcdc_drm_private *priv = ddev->dev_private; | ||||
| 	unsigned i, n = 0; | ||||
| 
 | ||||
| 	drm_kms_helper_poll_disable(ddev); | ||||
| 
 | ||||
| 	/* Save register state: */ | ||||
| 	for (i = 0; i < ARRAY_SIZE(registers); i++) | ||||
| 		if (registers[i].save && (priv->rev >= registers[i].rev)) | ||||
| 			priv->saved_register[n++] = tilcdc_read(ddev, registers[i].reg); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_pm_resume(struct device *dev) | ||||
| { | ||||
| 	struct drm_device *ddev = dev_get_drvdata(dev); | ||||
| 	struct tilcdc_drm_private *priv = ddev->dev_private; | ||||
| 	unsigned i, n = 0; | ||||
| 
 | ||||
| 	/* Restore register state: */ | ||||
| 	for (i = 0; i < ARRAY_SIZE(registers); i++) | ||||
| 		if (registers[i].save && (priv->rev >= registers[i].rev)) | ||||
| 			tilcdc_write(ddev, registers[i].reg, priv->saved_register[n++]); | ||||
| 
 | ||||
| 	drm_kms_helper_poll_enable(ddev); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| #endif | ||||
| 
 | ||||
| static const struct dev_pm_ops tilcdc_pm_ops = { | ||||
| 	SET_SYSTEM_SLEEP_PM_OPS(tilcdc_pm_suspend, tilcdc_pm_resume) | ||||
| }; | ||||
| 
 | ||||
| /*
 | ||||
|  * Platform driver: | ||||
|  */ | ||||
| 
 | ||||
| static int tilcdc_pdev_probe(struct platform_device *pdev) | ||||
| { | ||||
| 	/* bail out early if no DT data: */ | ||||
| 	if (!pdev->dev.of_node) { | ||||
| 		dev_err(&pdev->dev, "device-tree data is missing\n"); | ||||
| 		return -ENXIO; | ||||
| 	} | ||||
| 
 | ||||
| 	/* defer probing if slave is in deferred probing */ | ||||
| 	if (slave_probing == true) | ||||
| 		return -EPROBE_DEFER; | ||||
| 
 | ||||
| 	return drm_platform_init(&tilcdc_driver, pdev); | ||||
| } | ||||
| 
 | ||||
| static int tilcdc_pdev_remove(struct platform_device *pdev) | ||||
| { | ||||
| 	drm_put_dev(platform_get_drvdata(pdev)); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static struct of_device_id tilcdc_of_match[] = { | ||||
| 		{ .compatible = "ti,am33xx-tilcdc", }, | ||||
| 		{ }, | ||||
| }; | ||||
| MODULE_DEVICE_TABLE(of, tilcdc_of_match); | ||||
| 
 | ||||
| static struct platform_driver tilcdc_platform_driver = { | ||||
| 	.probe      = tilcdc_pdev_probe, | ||||
| 	.remove     = tilcdc_pdev_remove, | ||||
| 	.driver     = { | ||||
| 		.owner  = THIS_MODULE, | ||||
| 		.name   = "tilcdc", | ||||
| 		.pm     = &tilcdc_pm_ops, | ||||
| 		.of_match_table = tilcdc_of_match, | ||||
| 	}, | ||||
| }; | ||||
| 
 | ||||
| static int __init tilcdc_drm_init(void) | ||||
| { | ||||
| 	DBG("init"); | ||||
| 	tilcdc_tfp410_init(); | ||||
| 	tilcdc_slave_init(); | ||||
| 	tilcdc_panel_init(); | ||||
| 	return platform_driver_register(&tilcdc_platform_driver); | ||||
| } | ||||
| 
 | ||||
| static void __exit tilcdc_drm_fini(void) | ||||
| { | ||||
| 	DBG("fini"); | ||||
| 	platform_driver_unregister(&tilcdc_platform_driver); | ||||
| 	tilcdc_panel_fini(); | ||||
| 	tilcdc_slave_fini(); | ||||
| 	tilcdc_tfp410_fini(); | ||||
| } | ||||
| 
 | ||||
| module_init(tilcdc_drm_init); | ||||
| module_exit(tilcdc_drm_fini); | ||||
| 
 | ||||
| MODULE_AUTHOR("Rob Clark <robdclark@gmail.com"); | ||||
| MODULE_DESCRIPTION("TI LCD Controller DRM Driver"); | ||||
| MODULE_LICENSE("GPL"); | ||||
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