[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 <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_DEFR8,
	.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,
};

static const struct rcar_du_device_info rcar_du_r8a7791_info = {
	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_DEFR8,
	.num_crtcs = 2,
	.routes = {
		/* R8A7791 has one RGB output, one LVDS output and one
		 * (currently unsupported) TCON output.
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(1),
			.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 platform_device_id rcar_du_id_table[] = {
	{ "rcar-du-r8a7779", (kernel_ulong_t)&rcar_du_r8a7779_info },
	{ "rcar-du-r8a7790", (kernel_ulong_t)&rcar_du_r8a7790_info },
	{ "rcar-du-r8a7791", (kernel_ulong_t)&rcar_du_r8a7791_info },
	{ }
};

MODULE_DEVICE_TABLE(platform, rcar_du_id_table);

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 },
	{ }
};

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_platform_data *pdata = pdev->dev.platform_data;
	struct rcar_du_device *rcdu;
	struct resource *mem;
	int ret;

	if (pdata == NULL && 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;
	}

	rcdu->dev = &pdev->dev;
	rcdu->pdata = pdata;
	rcdu->info = np ? of_match_device(rcar_du_of_table, rcdu->dev)->data
		   : (void *)platform_get_device_id(pdev)->driver_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);

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

	/* vblank handling */
	ret = drm_vblank_init(dev, (1 << rcdu->num_crtcs) - 1);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to initialize vblank\n");
		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, int crtc)
{
	struct rcar_du_device *rcdu = dev->dev_private;

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

	return 0;
}

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

	rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], 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,
	.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_count,
	.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		= {
		.owner	= THIS_MODULE,
		.name	= "rcar-du",
		.pm	= &rcar_du_pm_ops,
		.of_match_table = rcar_du_of_table,
	},
	.id_table	= rcar_du_id_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>
	22
	23	#include <drm/drmP.h>
	24	#include <drm/drm_crtc_helper.h>
3864c6f4	25	#include <drm/drm_fb_cma_helper.h>
4bf8e196 LP	26	#include <drm/drm_gem_cma_helper.h>
	27
	28	#include "rcar_du_crtc.h"
	29	#include "rcar_du_drv.h"
	30	#include "rcar_du_kms.h"
	31	#include "rcar_du_regs.h"
	32
96c02691 LP	33	/* -----------------------------------------------------------------------------
	34	* Device Information
	35	*/
	36
	37	static const struct rcar_du_device_info rcar_du_r8a7779_info = {
	38	.features = 0,
	39	.num_crtcs = 2,
	40	.routes = {
	41	/* R8A7779 has two RGB outputs and one (currently unsupported)
	42	* TCON output.
	43	*/
	44	[RCAR_DU_OUTPUT_DPAD0] = {
	45	.possible_crtcs = BIT(0),
	46	.encoder_type = DRM_MODE_ENCODER_NONE,
	47	.port = 0,
	48	},
	49	[RCAR_DU_OUTPUT_DPAD1] = {
	50	.possible_crtcs = BIT(1) \| BIT(0),
	51	.encoder_type = DRM_MODE_ENCODER_NONE,
	52	.port = 1,
	53	},
	54	},
	55	.num_lvds = 0,
	56	};
	57
	58	static const struct rcar_du_device_info rcar_du_r8a7790_info = {
	59	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK \| RCAR_DU_FEATURE_DEFR8,
	60	.quirks = RCAR_DU_QUIRK_ALIGN_128B \| RCAR_DU_QUIRK_LVDS_LANES,
	61	.num_crtcs = 3,
	62	.routes = {
	63	/* R8A7790 has one RGB output, two LVDS outputs and one
	64	* (currently unsupported) TCON output.
	65	*/
	66	[RCAR_DU_OUTPUT_DPAD0] = {
	67	.possible_crtcs = BIT(2) \| BIT(1) \| BIT(0),
	68	.encoder_type = DRM_MODE_ENCODER_NONE,
	69	.port = 0,
	70	},
	71	[RCAR_DU_OUTPUT_LVDS0] = {
	72	.possible_crtcs = BIT(0),
	73	.encoder_type = DRM_MODE_ENCODER_LVDS,
	74	.port = 1,
	75	},
	76	[RCAR_DU_OUTPUT_LVDS1] = {
	77	.possible_crtcs = BIT(2) \| BIT(1),
	78	.encoder_type = DRM_MODE_ENCODER_LVDS,
	79	.port = 2,
	80	},
	81	},
	82	.num_lvds = 2,
	83	};
	84
	85	static const struct rcar_du_device_info rcar_du_r8a7791_info = {
	86	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK \| RCAR_DU_FEATURE_DEFR8,
	87	.num_crtcs = 2,
	88	.routes = {
	89	/* R8A7791 has one RGB output, one LVDS output and one
	90	* (currently unsupported) TCON output.
	91	*/
	92	[RCAR_DU_OUTPUT_DPAD0] = {
	93	.possible_crtcs = BIT(1),
	94	.encoder_type = DRM_MODE_ENCODER_NONE,
	95	.port = 0,
	96	},
97	[RCAR_DU_OUTPUT_LVDS0] = {
98	.possible_crtcs = BIT(0),
99	.encoder_type = DRM_MODE_ENCODER_LVDS,
100	.port = 1,
101	},
102	},
103	.num_lvds = 1,
104	};
105
106	static const struct platform_device_id rcar_du_id_table[] = {
107	{ "rcar-du-r8a7779", (kernel_ulong_t)&rcar_du_r8a7779_info },
108	{ "rcar-du-r8a7790", (kernel_ulong_t)&rcar_du_r8a7790_info },
109	{ "rcar-du-r8a7791", (kernel_ulong_t)&rcar_du_r8a7791_info },
110	{ }
111	};
112
113	MODULE_DEVICE_TABLE(platform, rcar_du_id_table);
114
115	static const struct of_device_id rcar_du_of_table[] = {
116	{ .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
117	{ .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
118	{ .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
119	{ }
120	};
121
122	MODULE_DEVICE_TABLE(of, rcar_du_of_table);
123
4bf8e196 LP	124	/* -----------------------------------------------------------------------------
	125	* DRM operations
	126	*/
	127
	128	static int rcar_du_unload(struct drm_device *dev)
	129	{
3864c6f4 LP	130	struct rcar_du_device *rcdu = dev->dev_private;
	131
	132	if (rcdu->fbdev)
	133	drm_fbdev_cma_fini(rcdu->fbdev);
	134
4bf8e196 LP	135	drm_kms_helper_poll_fini(dev);
	136	drm_mode_config_cleanup(dev);
	137	drm_vblank_cleanup(dev);
4bf8e196	138
f66ee304	139	dev->irq_enabled = 0;
4bf8e196 LP	140	dev->dev_private = NULL;
	141
	142	return 0;
	143	}
	144
	145	static int rcar_du_load(struct drm_device *dev, unsigned long flags)
	146	{
	147	struct platform_device *pdev = dev->platformdev;
96c02691	148	struct device_node *np = pdev->dev.of_node;
4bf8e196 LP	149	struct rcar_du_platform_data *pdata = pdev->dev.platform_data;
4bf8e196 LP	150	struct rcar_du_device *rcdu;
4bf8e196 LP	151	struct resource *mem;
	152	int ret;
	153
96c02691	154	if (pdata == NULL && np == NULL) {
4bf8e196 LP	155	dev_err(dev->dev, "no platform data\n");
	156	return -ENODEV;
	157	}
	158
	159	rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
	160	if (rcdu == NULL) {
	161	dev_err(dev->dev, "failed to allocate private data\n");
	162	return -ENOMEM;
	163	}
	164
	165	rcdu->dev = &pdev->dev;
	166	rcdu->pdata = pdata;
96c02691 LP	167	rcdu->info = np ? of_match_device(rcar_du_of_table, rcdu->dev)->data
96c02691 LP	168	: (void *)platform_get_device_id(pdev)->driver_data;
4bf8e196 LP	169	rcdu->ddev = dev;
	170	dev->dev_private = rcdu;
	171
f66ee304	172	/* I/O resources */
4bf8e196	173	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
d5b6dcc4 LP	174	rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
	175	if (IS_ERR(rcdu->mmio))
	176	return PTR_ERR(rcdu->mmio);
4bf8e196 LP	177
	178	/* DRM/KMS objects */
	179	ret = rcar_du_modeset_init(rcdu);
	180	if (ret < 0) {
	181	dev_err(&pdev->dev, "failed to initialize DRM/KMS\n");
	182	goto done;
	183	}
	184
f66ee304	185	/* vblank handling */
4bf8e196 LP	186	ret = drm_vblank_init(dev, (1 << rcdu->num_crtcs) - 1);
	187	if (ret < 0) {
	188	dev_err(&pdev->dev, "failed to initialize vblank\n");
	189	goto done;
	190	}
	191
f66ee304	192	dev->irq_enabled = 1;
4bf8e196 LP	193
	194	platform_set_drvdata(pdev, rcdu);
	195
	196	done:
	197	if (ret)
	198	rcar_du_unload(dev);
	199
	200	return ret;
	201	}
	202
	203	static void rcar_du_preclose(struct drm_device dev, struct drm_file file)
	204	{
	205	struct rcar_du_device *rcdu = dev->dev_private;
	206	unsigned int i;
	207
990d07a5	208	for (i = 0; i < rcdu->num_crtcs; ++i)
4bf8e196 LP	209	rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
	210	}
	211
3864c6f4	212	static void rcar_du_lastclose(struct drm_device *dev)
4bf8e196	213	{
4bf8e196	214	struct rcar_du_device *rcdu = dev->dev_private;
4bf8e196	215
3864c6f4	216	drm_fbdev_cma_restore_mode(rcdu->fbdev);
4bf8e196 LP	217	}
	218
	219	static int rcar_du_enable_vblank(struct drm_device *dev, int crtc)
	220	{
	221	struct rcar_du_device *rcdu = dev->dev_private;
	222
	223	rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], true);
	224
	225	return 0;
	226	}
	227
	228	static void rcar_du_disable_vblank(struct drm_device *dev, int crtc)
	229	{
	230	struct rcar_du_device *rcdu = dev->dev_private;
	231
	232	rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], false);
	233	}
	234
	235	static const struct file_operations rcar_du_fops = {
	236	.owner = THIS_MODULE,
	237	.open = drm_open,
	238	.release = drm_release,
	239	.unlocked_ioctl = drm_ioctl,
	240	#ifdef CONFIG_COMPAT
	241	.compat_ioctl = drm_compat_ioctl,
	242	#endif
	243	.poll = drm_poll,
	244	.read = drm_read,
4bf8e196 LP	245	.llseek = no_llseek,
	246	.mmap = drm_gem_cma_mmap,
	247	};
	248
	249	static struct drm_driver rcar_du_driver = {
f66ee304	250	.driver_features = DRIVER_GEM \| DRIVER_MODESET \| DRIVER_PRIME,
4bf8e196 LP	251	.load = rcar_du_load,
	252	.unload = rcar_du_unload,
	253	.preclose = rcar_du_preclose,
3864c6f4	254	.lastclose = rcar_du_lastclose,
915b4d11	255	.set_busid = drm_platform_set_busid,
4bf8e196 LP	256	.get_vblank_counter = drm_vblank_count,
	257	.enable_vblank = rcar_du_enable_vblank,
	258	.disable_vblank = rcar_du_disable_vblank,
	259	.gem_free_object = drm_gem_cma_free_object,
	260	.gem_vm_ops = &drm_gem_cma_vm_ops,
	261	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	262	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
ffb40400 LP	263	.gem_prime_import = drm_gem_prime_import,
	264	.gem_prime_export = drm_gem_prime_export,
	265	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
	266	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	267	.gem_prime_vmap = drm_gem_cma_prime_vmap,
	268	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
	269	.gem_prime_mmap = drm_gem_cma_prime_mmap,
59e32642	270	.dumb_create = rcar_du_dumb_create,
4bf8e196	271	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
43387b37	272	.dumb_destroy = drm_gem_dumb_destroy,
4bf8e196 LP	273	.fops = &rcar_du_fops,
	274	.name = "rcar-du",
	275	.desc = "Renesas R-Car Display Unit",
	276	.date = "20130110",
	277	.major = 1,
	278	.minor = 0,
	279	};
	280
	281	/* -----------------------------------------------------------------------------
	282	* Power management
	283	*/
	284
396d7a24	285	#ifdef CONFIG_PM_SLEEP
4bf8e196 LP	286	static int rcar_du_pm_suspend(struct device *dev)
	287	{
	288	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
	289
	290	drm_kms_helper_poll_disable(rcdu->ddev);
	291	/* TODO Suspend the CRTC */
	292
	293	return 0;
	294	}
	295
	296	static int rcar_du_pm_resume(struct device *dev)
	297	{
	298	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
	299
	300	/* TODO Resume the CRTC */
	301
	302	drm_kms_helper_poll_enable(rcdu->ddev);
	303	return 0;
	304	}
	305	#endif
	306
	307	static const struct dev_pm_ops rcar_du_pm_ops = {
	308	SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
	309	};
	310
	311	/* -----------------------------------------------------------------------------
	312	* Platform driver
	313	*/
	314
	315	static int rcar_du_probe(struct platform_device *pdev)
	316	{
	317	return drm_platform_init(&rcar_du_driver, pdev);
	318	}
	319
	320	static int rcar_du_remove(struct platform_device *pdev)
	321	{
57a24cf8 DV	322	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
	323
	324	drm_put_dev(rcdu->ddev);
4bf8e196 LP	325
	326	return 0;
	327	}
	328
	329	static struct platform_driver rcar_du_platform_driver = {
	330	.probe = rcar_du_probe,
	331	.remove = rcar_du_remove,
	332	.driver = {
	333	.owner = THIS_MODULE,
	334	.name = "rcar-du",
	335	.pm = &rcar_du_pm_ops,
96c02691	336	.of_match_table = rcar_du_of_table,
4bf8e196	337	},
481d342e	338	.id_table = rcar_du_id_table,
4bf8e196 LP	339	};
	340
	341	module_platform_driver(rcar_du_platform_driver);
	342
	343	MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
	344	MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
	345	MODULE_LICENSE("GPL");