[deliverable/linux.git] / drivers / gpu / drm / rcar-du / rcar_du_drv.c

/*
 * rcar_du_drv.c  --  R-Car Display Unit DRM driver
 *
 * Copyright (C) 2013-2014 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/clk.h>
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/wait.h>

#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>

#include "rcar_du_crtc.h"
#include "rcar_du_drv.h"
#include "rcar_du_kms.h"
#include "rcar_du_regs.h"

/* -----------------------------------------------------------------------------
 * Device Information
 */

static const struct rcar_du_device_info rcar_du_r8a7779_info = {
	.features = 0,
	.num_crtcs = 2,
	.routes = {
		/* R8A7779 has two RGB outputs and one (currently unsupported)
		 * TCON output.
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(0),
			.encoder_type = DRM_MODE_ENCODER_NONE,
			.port = 0,
		},
		[RCAR_DU_OUTPUT_DPAD1] = {
			.possible_crtcs = BIT(1) | BIT(0),
			.encoder_type = DRM_MODE_ENCODER_NONE,
			.port = 1,
		},
	},
	.num_lvds = 0,
};

static const struct rcar_du_device_info rcar_du_r8a7790_info = {
	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
		  | RCAR_DU_FEATURE_EXT_CTRL_REGS,
	.quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES,
	.num_crtcs = 3,
	.routes = {
		/* R8A7790 has one RGB output, two LVDS outputs and one
		 * (currently unsupported) TCON output.
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(2) | BIT(1) | BIT(0),
			.encoder_type = DRM_MODE_ENCODER_NONE,
			.port = 0,
		},
		[RCAR_DU_OUTPUT_LVDS0] = {
			.possible_crtcs = BIT(0),
			.encoder_type = DRM_MODE_ENCODER_LVDS,
			.port = 1,
		},
		[RCAR_DU_OUTPUT_LVDS1] = {
			.possible_crtcs = BIT(2) | BIT(1),
			.encoder_type = DRM_MODE_ENCODER_LVDS,
			.port = 2,
		},
	},
	.num_lvds = 2,
};

/* M2-W (r8a7791) and M2-N (r8a7793) are identical */
static const struct rcar_du_device_info rcar_du_r8a7791_info = {
	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
		  | RCAR_DU_FEATURE_EXT_CTRL_REGS,
	.num_crtcs = 2,
	.routes = {
		/* R8A779[13] has one RGB output, one LVDS output and one
		 * (currently unsupported) TCON output.
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(1) | BIT(0),
			.encoder_type = DRM_MODE_ENCODER_NONE,
			.port = 0,
		},
		[RCAR_DU_OUTPUT_LVDS0] = {
			.possible_crtcs = BIT(0),
			.encoder_type = DRM_MODE_ENCODER_LVDS,
			.port = 1,
		},
	},
	.num_lvds = 1,
};

static const struct of_device_id rcar_du_of_table[] = {
	{ .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
	{ .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
	{ .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
	{ .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },
	{ }
};

MODULE_DEVICE_TABLE(of, rcar_du_of_table);

/* -----------------------------------------------------------------------------
 * DRM operations
 */

static int rcar_du_unload(struct drm_device *dev)
{
	struct rcar_du_device *rcdu = dev->dev_private;

	if (rcdu->fbdev)
		drm_fbdev_cma_fini(rcdu->fbdev);

	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
	drm_vblank_cleanup(dev);

	dev->irq_enabled = 0;
	dev->dev_private = NULL;

	return 0;
}

static int rcar_du_load(struct drm_device *dev, unsigned long flags)
{
	struct platform_device *pdev = dev->platformdev;
	struct device_node *np = pdev->dev.of_node;
	struct rcar_du_device *rcdu;
	struct resource *mem;
	int ret;

	if (np == NULL) {
		dev_err(dev->dev, "no platform data\n");
		return -ENODEV;
	}

	rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
	if (rcdu == NULL) {
		dev_err(dev->dev, "failed to allocate private data\n");
		return -ENOMEM;
	}

	init_waitqueue_head(&rcdu->commit.wait);

	rcdu->dev = &pdev->dev;
	rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
	rcdu->ddev = dev;
	dev->dev_private = rcdu;

	/* I/O resources */
	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
	if (IS_ERR(rcdu->mmio))
		return PTR_ERR(rcdu->mmio);

	/* Initialize vertical blanking interrupts handling. Start with vblank
	 * disabled for all CRTCs.
	 */
	ret = drm_vblank_init(dev, (1 << rcdu->info->num_crtcs) - 1);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to initialize vblank\n");
		goto done;
	}

	/* DRM/KMS objects */
	ret = rcar_du_modeset_init(rcdu);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret);
		goto done;
	}

	dev->irq_enabled = 1;

	platform_set_drvdata(pdev, rcdu);

done:
	if (ret)
		rcar_du_unload(dev);

	return ret;
}

static void rcar_du_preclose(struct drm_device *dev, struct drm_file *file)
{
	struct rcar_du_device *rcdu = dev->dev_private;
	unsigned int i;

	for (i = 0; i < rcdu->num_crtcs; ++i)
		rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
}

static void rcar_du_lastclose(struct drm_device *dev)
{
	struct rcar_du_device *rcdu = dev->dev_private;

	drm_fbdev_cma_restore_mode(rcdu->fbdev);
}

static int rcar_du_enable_vblank(struct drm_device *dev, unsigned int pipe)
{
	struct rcar_du_device *rcdu = dev->dev_private;

	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], true);

	return 0;
}

static void rcar_du_disable_vblank(struct drm_device *dev, unsigned int pipe)
{
	struct rcar_du_device *rcdu = dev->dev_private;

	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], false);
}

static const struct file_operations rcar_du_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 rcar_du_driver = {
	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME
				| DRIVER_ATOMIC,
	.load			= rcar_du_load,
	.unload			= rcar_du_unload,
	.preclose		= rcar_du_preclose,
	.lastclose		= rcar_du_lastclose,
	.set_busid		= drm_platform_set_busid,
	.get_vblank_counter	= drm_vblank_no_hw_counter,
	.enable_vblank		= rcar_du_enable_vblank,
	.disable_vblank		= rcar_du_disable_vblank,
	.gem_free_object	= drm_gem_cma_free_object,
	.gem_vm_ops		= &drm_gem_cma_vm_ops,
	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
	.gem_prime_import	= drm_gem_prime_import,
	.gem_prime_export	= drm_gem_prime_export,
	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
	.dumb_create		= rcar_du_dumb_create,
	.dumb_map_offset	= drm_gem_cma_dumb_map_offset,
	.dumb_destroy		= drm_gem_dumb_destroy,
	.fops			= &rcar_du_fops,
	.name			= "rcar-du",
	.desc			= "Renesas R-Car Display Unit",
	.date			= "20130110",
	.major			= 1,
	.minor			= 0,
};

/* -----------------------------------------------------------------------------
 * Power management
 */

#ifdef CONFIG_PM_SLEEP
static int rcar_du_pm_suspend(struct device *dev)
{
	struct rcar_du_device *rcdu = dev_get_drvdata(dev);

	drm_kms_helper_poll_disable(rcdu->ddev);
	/* TODO Suspend the CRTC */

	return 0;
}

static int rcar_du_pm_resume(struct device *dev)
{
	struct rcar_du_device *rcdu = dev_get_drvdata(dev);

	/* TODO Resume the CRTC */

	drm_kms_helper_poll_enable(rcdu->ddev);
	return 0;
}
#endif

static const struct dev_pm_ops rcar_du_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
};

/* -----------------------------------------------------------------------------
 * Platform driver
 */

static int rcar_du_probe(struct platform_device *pdev)
{
	return drm_platform_init(&rcar_du_driver, pdev);
}

static int rcar_du_remove(struct platform_device *pdev)
{
	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);

	drm_put_dev(rcdu->ddev);

	return 0;
}

static struct platform_driver rcar_du_platform_driver = {
	.probe		= rcar_du_probe,
	.remove		= rcar_du_remove,
	.driver		= {
		.name	= "rcar-du",
		.pm	= &rcar_du_pm_ops,
		.of_match_table = rcar_du_of_table,
	},
};

module_platform_driver(rcar_du_platform_driver);

MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
4bf8e196 LP	1	/*
	2	* rcar_du_drv.c -- R-Car Display Unit DRM driver
	3	*
36d50464	4	* Copyright (C) 2013-2014 Renesas Electronics Corporation
4bf8e196 LP	5	*
	6	* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#include <linux/clk.h>
	15	#include <linux/io.h>
	16	#include <linux/mm.h>
	17	#include <linux/module.h>
96c02691	18	#include <linux/of_device.h>
4bf8e196 LP	19	#include <linux/platform_device.h>
	20	#include <linux/pm.h>
	21	#include <linux/slab.h>
8d3f9b22	22	#include <linux/wait.h>
4bf8e196 LP	23
	24	#include <drm/drmP.h>
	25	#include <drm/drm_crtc_helper.h>
3864c6f4	26	#include <drm/drm_fb_cma_helper.h>
4bf8e196 LP	27	#include <drm/drm_gem_cma_helper.h>
	28
	29	#include "rcar_du_crtc.h"
	30	#include "rcar_du_drv.h"
	31	#include "rcar_du_kms.h"
	32	#include "rcar_du_regs.h"
	33
96c02691 LP	34	/* -----------------------------------------------------------------------------
	35	* Device Information
	36	*/
	37
	38	static const struct rcar_du_device_info rcar_du_r8a7779_info = {
	39	.features = 0,
	40	.num_crtcs = 2,
	41	.routes = {
	42	/* R8A7779 has two RGB outputs and one (currently unsupported)
	43	* TCON output.
	44	*/
	45	[RCAR_DU_OUTPUT_DPAD0] = {
	46	.possible_crtcs = BIT(0),
	47	.encoder_type = DRM_MODE_ENCODER_NONE,
	48	.port = 0,
	49	},
	50	[RCAR_DU_OUTPUT_DPAD1] = {
	51	.possible_crtcs = BIT(1) \| BIT(0),
	52	.encoder_type = DRM_MODE_ENCODER_NONE,
	53	.port = 1,
	54	},
	55	},
	56	.num_lvds = 0,
	57	};
	58
	59	static const struct rcar_du_device_info rcar_du_r8a7790_info = {
0c1c8776 LP	60	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
0c1c8776 LP	61	\| RCAR_DU_FEATURE_EXT_CTRL_REGS,
96c02691 LP	62	.quirks = RCAR_DU_QUIRK_ALIGN_128B \| RCAR_DU_QUIRK_LVDS_LANES,
	63	.num_crtcs = 3,
	64	.routes = {
	65	/* R8A7790 has one RGB output, two LVDS outputs and one
	66	* (currently unsupported) TCON output.
	67	*/
	68	[RCAR_DU_OUTPUT_DPAD0] = {
	69	.possible_crtcs = BIT(2) \| BIT(1) \| BIT(0),
	70	.encoder_type = DRM_MODE_ENCODER_NONE,
	71	.port = 0,
	72	},
	73	[RCAR_DU_OUTPUT_LVDS0] = {
	74	.possible_crtcs = BIT(0),
	75	.encoder_type = DRM_MODE_ENCODER_LVDS,
	76	.port = 1,
	77	},
	78	[RCAR_DU_OUTPUT_LVDS1] = {
	79	.possible_crtcs = BIT(2) \| BIT(1),
	80	.encoder_type = DRM_MODE_ENCODER_LVDS,
	81	.port = 2,
	82	},
	83	},
	84	.num_lvds = 2,
	85	};
	86
f1ceb84a	87	/* M2-W (r8a7791) and M2-N (r8a7793) are identical */
96c02691	88	static const struct rcar_du_device_info rcar_du_r8a7791_info = {
0c1c8776 LP	89	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
0c1c8776 LP	90	\| RCAR_DU_FEATURE_EXT_CTRL_REGS,
96c02691 LP	91	.num_crtcs = 2,
96c02691 LP	92	.routes = {
f1ceb84a	93	/* R8A779[13] has one RGB output, one LVDS output and one
96c02691 LP	94	* (currently unsupported) TCON output.
	95	*/
	96	[RCAR_DU_OUTPUT_DPAD0] = {
f4f0fb79	97	.possible_crtcs = BIT(1) \| BIT(0),
96c02691 LP	98	.encoder_type = DRM_MODE_ENCODER_NONE,
	99	.port = 0,
	100	},
	101	[RCAR_DU_OUTPUT_LVDS0] = {
	102	.possible_crtcs = BIT(0),
	103	.encoder_type = DRM_MODE_ENCODER_LVDS,
	104	.port = 1,
	105	},
	106	},
	107	.num_lvds = 1,
	108	};
	109
96c02691 LP	110	static const struct of_device_id rcar_du_of_table[] = {
	111	{ .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
	112	{ .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
	113	{ .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
f1ceb84a	114	{ .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },
96c02691 LP	115	{ }
	116	};
	117
	118	MODULE_DEVICE_TABLE(of, rcar_du_of_table);
	119
4bf8e196 LP	120	/* -----------------------------------------------------------------------------
	121	* DRM operations
	122	*/
	123
	124	static int rcar_du_unload(struct drm_device *dev)
	125	{
3864c6f4 LP	126	struct rcar_du_device *rcdu = dev->dev_private;
	127
	128	if (rcdu->fbdev)
	129	drm_fbdev_cma_fini(rcdu->fbdev);
	130
4bf8e196 LP	131	drm_kms_helper_poll_fini(dev);
	132	drm_mode_config_cleanup(dev);
	133	drm_vblank_cleanup(dev);
4bf8e196	134
f66ee304	135	dev->irq_enabled = 0;
4bf8e196 LP	136	dev->dev_private = NULL;
	137
	138	return 0;
	139	}
	140
	141	static int rcar_du_load(struct drm_device *dev, unsigned long flags)
	142	{
	143	struct platform_device *pdev = dev->platformdev;
96c02691	144	struct device_node *np = pdev->dev.of_node;
4bf8e196	145	struct rcar_du_device *rcdu;
4bf8e196 LP	146	struct resource *mem;
	147	int ret;
	148
2378ad12	149	if (np == NULL) {
4bf8e196 LP	150	dev_err(dev->dev, "no platform data\n");
	151	return -ENODEV;
	152	}
	153
	154	rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
	155	if (rcdu == NULL) {
	156	dev_err(dev->dev, "failed to allocate private data\n");
	157	return -ENOMEM;
	158	}
	159
8d3f9b22 LP	160	init_waitqueue_head(&rcdu->commit.wait);
8d3f9b22 LP	161
4bf8e196	162	rcdu->dev = &pdev->dev;
f3bda362	163	rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
4bf8e196 LP	164	rcdu->ddev = dev;
	165	dev->dev_private = rcdu;
	166
f66ee304	167	/* I/O resources */
4bf8e196	168	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
d5b6dcc4 LP	169	rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
	170	if (IS_ERR(rcdu->mmio))
	171	return PTR_ERR(rcdu->mmio);
4bf8e196	172
0cd90a54 LP	173	/* Initialize vertical blanking interrupts handling. Start with vblank
	174	* disabled for all CRTCs.
	175	*/
	176	ret = drm_vblank_init(dev, (1 << rcdu->info->num_crtcs) - 1);
4bf8e196	177	if (ret < 0) {
0cd90a54	178	dev_err(&pdev->dev, "failed to initialize vblank\n");
4bf8e196 LP	179	goto done;
	180	}
	181
0cd90a54 LP	182	/* DRM/KMS objects */
0cd90a54 LP	183	ret = rcar_du_modeset_init(rcdu);
4bf8e196	184	if (ret < 0) {
6e0c6e18	185	dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret);
4bf8e196 LP	186	goto done;
	187	}
	188
f66ee304	189	dev->irq_enabled = 1;
4bf8e196 LP	190
	191	platform_set_drvdata(pdev, rcdu);
	192
	193	done:
	194	if (ret)
	195	rcar_du_unload(dev);
	196
	197	return ret;
	198	}
	199
	200	static void rcar_du_preclose(struct drm_device dev, struct drm_file file)
	201	{
	202	struct rcar_du_device *rcdu = dev->dev_private;
	203	unsigned int i;
	204
990d07a5	205	for (i = 0; i < rcdu->num_crtcs; ++i)
4bf8e196 LP	206	rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
	207	}
	208
3864c6f4	209	static void rcar_du_lastclose(struct drm_device *dev)
4bf8e196	210	{
4bf8e196	211	struct rcar_du_device *rcdu = dev->dev_private;
4bf8e196	212
3864c6f4	213	drm_fbdev_cma_restore_mode(rcdu->fbdev);
4bf8e196 LP	214	}
4bf8e196 LP	215
88e72717	216	static int rcar_du_enable_vblank(struct drm_device *dev, unsigned int pipe)
4bf8e196 LP	217	{
	218	struct rcar_du_device *rcdu = dev->dev_private;
	219
88e72717	220	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], true);
4bf8e196 LP	221
	222	return 0;
	223	}
	224
88e72717	225	static void rcar_du_disable_vblank(struct drm_device *dev, unsigned int pipe)
4bf8e196 LP	226	{
	227	struct rcar_du_device *rcdu = dev->dev_private;
	228
88e72717	229	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], false);
4bf8e196 LP	230	}
	231
	232	static const struct file_operations rcar_du_fops = {
	233	.owner = THIS_MODULE,
	234	.open = drm_open,
	235	.release = drm_release,
	236	.unlocked_ioctl = drm_ioctl,
	237	#ifdef CONFIG_COMPAT
	238	.compat_ioctl = drm_compat_ioctl,
	239	#endif
	240	.poll = drm_poll,
	241	.read = drm_read,
4bf8e196 LP	242	.llseek = no_llseek,
	243	.mmap = drm_gem_cma_mmap,
	244	};
	245
	246	static struct drm_driver rcar_du_driver = {
6dbe686b LP	247	.driver_features = DRIVER_GEM \| DRIVER_MODESET \| DRIVER_PRIME
6dbe686b LP	248	\| DRIVER_ATOMIC,
4bf8e196 LP	249	.load = rcar_du_load,
	250	.unload = rcar_du_unload,
	251	.preclose = rcar_du_preclose,
3864c6f4	252	.lastclose = rcar_du_lastclose,
915b4d11	253	.set_busid = drm_platform_set_busid,
b44f8408	254	.get_vblank_counter = drm_vblank_no_hw_counter,
4bf8e196 LP	255	.enable_vblank = rcar_du_enable_vblank,
	256	.disable_vblank = rcar_du_disable_vblank,
	257	.gem_free_object = drm_gem_cma_free_object,
	258	.gem_vm_ops = &drm_gem_cma_vm_ops,
	259	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	260	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
ffb40400 LP	261	.gem_prime_import = drm_gem_prime_import,
	262	.gem_prime_export = drm_gem_prime_export,
	263	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
	264	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	265	.gem_prime_vmap = drm_gem_cma_prime_vmap,
	266	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
	267	.gem_prime_mmap = drm_gem_cma_prime_mmap,
59e32642	268	.dumb_create = rcar_du_dumb_create,
4bf8e196	269	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
43387b37	270	.dumb_destroy = drm_gem_dumb_destroy,
4bf8e196 LP	271	.fops = &rcar_du_fops,
	272	.name = "rcar-du",
	273	.desc = "Renesas R-Car Display Unit",
	274	.date = "20130110",
	275	.major = 1,
	276	.minor = 0,
	277	};
	278
	279	/* -----------------------------------------------------------------------------
	280	* Power management
	281	*/
	282
396d7a24	283	#ifdef CONFIG_PM_SLEEP
4bf8e196 LP	284	static int rcar_du_pm_suspend(struct device *dev)
	285	{
	286	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
	287
	288	drm_kms_helper_poll_disable(rcdu->ddev);
	289	/* TODO Suspend the CRTC */
	290
	291	return 0;
	292	}
	293
	294	static int rcar_du_pm_resume(struct device *dev)
	295	{
	296	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
	297
	298	/* TODO Resume the CRTC */
	299
	300	drm_kms_helper_poll_enable(rcdu->ddev);
	301	return 0;
	302	}
	303	#endif
	304
	305	static const struct dev_pm_ops rcar_du_pm_ops = {
	306	SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
	307	};
	308
	309	/* -----------------------------------------------------------------------------
	310	* Platform driver
	311	*/
	312
	313	static int rcar_du_probe(struct platform_device *pdev)
	314	{
	315	return drm_platform_init(&rcar_du_driver, pdev);
	316	}
	317
	318	static int rcar_du_remove(struct platform_device *pdev)
	319	{
57a24cf8 DV	320	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
	321
	322	drm_put_dev(rcdu->ddev);
4bf8e196 LP	323
	324	return 0;
	325	}
	326
	327	static struct platform_driver rcar_du_platform_driver = {
	328	.probe = rcar_du_probe,
	329	.remove = rcar_du_remove,
	330	.driver = {
4bf8e196 LP	331	.name = "rcar-du",
4bf8e196 LP	332	.pm = &rcar_du_pm_ops,
96c02691	333	.of_match_table = rcar_du_of_table,
4bf8e196 LP	334	},
	335	};
	336
	337	module_platform_driver(rcar_du_platform_driver);
	338
	339	MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
	340	MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
	341	MODULE_LICENSE("GPL");