[deliverable/linux.git] / drivers / gpu / drm / armada / armada_drv.c

/*
 * Copyright (C) 2012 Russell King
 *
 * 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.
 */
#include <linux/clk.h>
#include <linux/module.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include "armada_crtc.h"
#include "armada_drm.h"
#include "armada_gem.h"
#include "armada_hw.h"
#include <drm/armada_drm.h>
#include "armada_ioctlP.h"

#ifdef CONFIG_DRM_ARMADA_TDA1998X
#include <drm/i2c/tda998x.h>
#include "armada_slave.h"

static struct tda998x_encoder_params params = {
	/* With 0x24, there is no translation between vp_out and int_vp
	FB	LCD out	Pins	VIP	Int Vp
	R:23:16	R:7:0	VPC7:0	7:0	7:0[R]
	G:15:8	G:15:8	VPB7:0	23:16	23:16[G]
	B:7:0	B:23:16	VPA7:0	15:8	15:8[B]
	*/
	.swap_a = 2,
	.swap_b = 3,
	.swap_c = 4,
	.swap_d = 5,
	.swap_e = 0,
	.swap_f = 1,
	.audio_cfg = BIT(2),
	.audio_frame[1] = 1,
	.audio_format = AFMT_SPDIF,
	.audio_sample_rate = 44100,
};

static const struct armada_drm_slave_config tda19988_config = {
	.i2c_adapter_id = 0,
	.crtcs = 1 << 0, /* Only LCD0 at the moment */
	.polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT,
	.interlace_allowed = true,
	.info = {
		.type = "tda998x",
		.addr = 0x70,
		.platform_data = &params,
	},
};
#endif

static void armada_drm_unref_work(struct work_struct *work)
{
	struct armada_private *priv =
		container_of(work, struct armada_private, fb_unref_work);
	struct drm_framebuffer *fb;

	while (kfifo_get(&priv->fb_unref, &fb))
		drm_framebuffer_unreference(fb);
}

/* Must be called with dev->event_lock held */
void __armada_drm_queue_unref_work(struct drm_device *dev,
	struct drm_framebuffer *fb)
{
	struct armada_private *priv = dev->dev_private;

	/*
	 * Yes, we really must jump through these hoops just to store a
	 * _pointer_ to something into the kfifo.  This is utterly insane
	 * and idiotic, because it kfifo requires the _data_ pointed to by
	 * the pointer const, not the pointer itself.  Not only that, but
	 * you have to pass a pointer _to_ the pointer you want stored.
	 */
	const struct drm_framebuffer *silly_api_alert = fb;
	WARN_ON(!kfifo_put(&priv->fb_unref, &silly_api_alert));
	schedule_work(&priv->fb_unref_work);
}

void armada_drm_queue_unref_work(struct drm_device *dev,
	struct drm_framebuffer *fb)
{
	unsigned long flags;

	spin_lock_irqsave(&dev->event_lock, flags);
	__armada_drm_queue_unref_work(dev, fb);
	spin_unlock_irqrestore(&dev->event_lock, flags);
}

static int armada_drm_load(struct drm_device *dev, unsigned long flags)
{
	const struct platform_device_id *id;
	struct armada_private *priv;
	struct resource *res[ARRAY_SIZE(priv->dcrtc)];
	struct resource *mem = NULL;
	int ret, n, i;

	memset(res, 0, sizeof(res));

	for (n = i = 0; ; n++) {
		struct resource *r = platform_get_resource(dev->platformdev,
							   IORESOURCE_MEM, n);
		if (!r)
			break;

		/* Resources above 64K are graphics memory */
		if (resource_size(r) > SZ_64K)
			mem = r;
		else if (i < ARRAY_SIZE(priv->dcrtc))
			res[i++] = r;
		else
			return -EINVAL;
	}

	if (!res[0] || !mem)
		return -ENXIO;

	if (!devm_request_mem_region(dev->dev, mem->start,
			resource_size(mem), "armada-drm"))
		return -EBUSY;

	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		DRM_ERROR("failed to allocate private\n");
		return -ENOMEM;
	}

	dev->dev_private = priv;

	/* Get the implementation specific driver data. */
	id = platform_get_device_id(dev->platformdev);
	if (!id)
		return -ENXIO;

	priv->variant = (struct armada_variant *)id->driver_data;

	ret = priv->variant->init(priv, dev->dev);
	if (ret)
		return ret;

	INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work);
	INIT_KFIFO(priv->fb_unref);

	/* Mode setting support */
	drm_mode_config_init(dev);
	dev->mode_config.min_width = 320;
	dev->mode_config.min_height = 200;

	/*
	 * With vscale enabled, the maximum width is 1920 due to the
	 * 1920 by 3 lines RAM
	 */
	dev->mode_config.max_width = 1920;
	dev->mode_config.max_height = 2048;

	dev->mode_config.preferred_depth = 24;
	dev->mode_config.funcs = &armada_drm_mode_config_funcs;
	drm_mm_init(&priv->linear, mem->start, resource_size(mem));

	/* Create all LCD controllers */
	for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
		if (!res[n])
			break;

		ret = armada_drm_crtc_create(dev, n, res[n]);
		if (ret)
			goto err_kms;
	}

#ifdef CONFIG_DRM_ARMADA_TDA1998X
	ret = armada_drm_connector_slave_create(dev, &tda19988_config);
	if (ret)
		goto err_kms;
#endif

	ret = drm_vblank_init(dev, n);
	if (ret)
		goto err_kms;

	ret = drm_irq_install(dev);
	if (ret)
		goto err_kms;

	dev->vblank_disable_allowed = 1;

	ret = armada_fbdev_init(dev);
	if (ret)
		goto err_irq;

	drm_kms_helper_poll_init(dev);

	return 0;

 err_irq:
	drm_irq_uninstall(dev);
 err_kms:
	drm_mode_config_cleanup(dev);
	drm_mm_takedown(&priv->linear);
	flush_work(&priv->fb_unref_work);

	return ret;
}

static int armada_drm_unload(struct drm_device *dev)
{
	struct armada_private *priv = dev->dev_private;

	drm_kms_helper_poll_fini(dev);
	armada_fbdev_fini(dev);
	drm_irq_uninstall(dev);
	drm_mode_config_cleanup(dev);
	drm_mm_takedown(&priv->linear);
	flush_work(&priv->fb_unref_work);
	dev->dev_private = NULL;

	return 0;
}

void armada_drm_vbl_event_add(struct armada_crtc *dcrtc,
	struct armada_vbl_event *evt)
{
	unsigned long flags;

	spin_lock_irqsave(&dcrtc->irq_lock, flags);
	if (list_empty(&evt->node)) {
		list_add_tail(&evt->node, &dcrtc->vbl_list);

		drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
	}
	spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
}

void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc,
	struct armada_vbl_event *evt)
{
	if (!list_empty(&evt->node)) {
		list_del_init(&evt->node);
		drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
	}
}

void armada_drm_vbl_event_remove_unlocked(struct armada_crtc *dcrtc,
	struct armada_vbl_event *evt)
{
	unsigned long flags;

	spin_lock_irqsave(&dcrtc->irq_lock, flags);
	armada_drm_vbl_event_remove(dcrtc, evt);
	spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
}

/* These are called under the vbl_lock. */
static int armada_drm_enable_vblank(struct drm_device *dev, int crtc)
{
	struct armada_private *priv = dev->dev_private;
	armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
	return 0;
}

static void armada_drm_disable_vblank(struct drm_device *dev, int crtc)
{
	struct armada_private *priv = dev->dev_private;
	armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
}

static irqreturn_t armada_drm_irq_handler(int irq, void *arg)
{
	struct drm_device *dev = arg;
	struct armada_private *priv = dev->dev_private;
	struct armada_crtc *dcrtc = priv->dcrtc[0];
	uint32_t v, stat = readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR);
	irqreturn_t handled = IRQ_NONE;

	/*
	 * This is rediculous - rather than writing bits to clear, we
	 * have to set the actual status register value.  This is racy.
	 */
	writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);

	/* Mask out those interrupts we haven't enabled */
	v = stat & dcrtc->irq_ena;

	if (v & (VSYNC_IRQ|GRA_FRAME_IRQ|DUMB_FRAMEDONE)) {
		armada_drm_crtc_irq(dcrtc, stat);
		handled = IRQ_HANDLED;
	}

	return handled;
}

static int armada_drm_irq_postinstall(struct drm_device *dev)
{
	struct armada_private *priv = dev->dev_private;
	struct armada_crtc *dcrtc = priv->dcrtc[0];

	spin_lock_irq(&dev->vbl_lock);
	writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
	writel(0, dcrtc->base + LCD_SPU_IRQ_ISR);
	spin_unlock_irq(&dev->vbl_lock);

	return 0;
}

static void armada_drm_irq_uninstall(struct drm_device *dev)
{
	struct armada_private *priv = dev->dev_private;
	struct armada_crtc *dcrtc = priv->dcrtc[0];

	writel(0, dcrtc->base + LCD_SPU_IRQ_ENA);
}

static struct drm_ioctl_desc armada_ioctls[] = {
	DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,
		DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl,
		DRM_UNLOCKED),
	DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl,
		DRM_UNLOCKED),
};

static const struct file_operations armada_drm_fops = {
	.owner			= THIS_MODULE,
	.llseek			= no_llseek,
	.read			= drm_read,
	.poll			= drm_poll,
	.unlocked_ioctl		= drm_ioctl,
	.mmap			= drm_gem_mmap,
	.open			= drm_open,
	.release		= drm_release,
};

static struct drm_driver armada_drm_driver = {
	.load			= armada_drm_load,
	.open			= NULL,
	.preclose		= NULL,
	.postclose		= NULL,
	.lastclose		= NULL,
	.unload			= armada_drm_unload,
	.get_vblank_counter	= drm_vblank_count,
	.enable_vblank		= armada_drm_enable_vblank,
	.disable_vblank		= armada_drm_disable_vblank,
	.irq_handler		= armada_drm_irq_handler,
	.irq_postinstall	= armada_drm_irq_postinstall,
	.irq_uninstall		= armada_drm_irq_uninstall,
#ifdef CONFIG_DEBUG_FS
	.debugfs_init		= armada_drm_debugfs_init,
	.debugfs_cleanup	= armada_drm_debugfs_cleanup,
#endif
	.gem_init_object	= NULL,
	.gem_free_object	= armada_gem_free_object,
	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
	.gem_prime_export	= armada_gem_prime_export,
	.gem_prime_import	= armada_gem_prime_import,
	.dumb_create		= armada_gem_dumb_create,
	.dumb_map_offset	= armada_gem_dumb_map_offset,
	.dumb_destroy		= armada_gem_dumb_destroy,
	.gem_vm_ops		= &armada_gem_vm_ops,
	.major			= 1,
	.minor			= 0,
	.name			= "armada-drm",
	.desc			= "Armada SoC DRM",
	.date			= "20120730",
	.driver_features	= DRIVER_GEM | DRIVER_MODESET |
				  DRIVER_HAVE_IRQ | DRIVER_PRIME,
	.ioctls			= armada_ioctls,
	.fops			= &armada_drm_fops,
};

static int armada_drm_probe(struct platform_device *pdev)
{
	return drm_platform_init(&armada_drm_driver, pdev);
}

static int armada_drm_remove(struct platform_device *pdev)
{
	drm_platform_exit(&armada_drm_driver, pdev);
	return 0;
}

static const struct platform_device_id armada_drm_platform_ids[] = {
	{
		.name		= "armada-drm",
		.driver_data	= (unsigned long)&armada510_ops,
	}, {
		.name		= "armada-510-drm",
		.driver_data	= (unsigned long)&armada510_ops,
	},
	{ },
};
MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);

static struct platform_driver armada_drm_platform_driver = {
	.probe	= armada_drm_probe,
	.remove	= armada_drm_remove,
	.driver	= {
		.name	= "armada-drm",
		.owner	= THIS_MODULE,
	},
	.id_table = armada_drm_platform_ids,
};

static int __init armada_drm_init(void)
{
	armada_drm_driver.num_ioctls = DRM_ARRAY_SIZE(armada_ioctls);
	return platform_driver_register(&armada_drm_platform_driver);
}
module_init(armada_drm_init);

static void __exit armada_drm_exit(void)
{
	platform_driver_unregister(&armada_drm_platform_driver);
}
module_exit(armada_drm_exit);

MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
MODULE_DESCRIPTION("Armada DRM Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:armada-drm");
Commit	Line	Data
96f60e37 RK	1	/*
	2	* Copyright (C) 2012 Russell King
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8	#include <linux/clk.h>
	9	#include <linux/module.h>
	10	#include <drm/drmP.h>
	11	#include <drm/drm_crtc_helper.h>
	12	#include "armada_crtc.h"
	13	#include "armada_drm.h"
	14	#include "armada_gem.h"
	15	#include "armada_hw.h"
	16	#include <drm/armada_drm.h>
	17	#include "armada_ioctlP.h"
	18
585b691e RK	19	#ifdef CONFIG_DRM_ARMADA_TDA1998X
	20	#include <drm/i2c/tda998x.h>
	21	#include "armada_slave.h"
	22
	23	static struct tda998x_encoder_params params = {
	24	/* With 0x24, there is no translation between vp_out and int_vp
	25	FB LCD out Pins VIP Int Vp
	26	R:23:16 R:7:0 VPC7:0 7:0 7:0[R]
	27	G:15:8 G:15:8 VPB7:0 23:16 23:16[G]
	28	B:7:0 B:23:16 VPA7:0 15:8 15:8[B]
	29	*/
	30	.swap_a = 2,
	31	.swap_b = 3,
	32	.swap_c = 4,
	33	.swap_d = 5,
	34	.swap_e = 0,
	35	.swap_f = 1,
	36	.audio_cfg = BIT(2),
	37	.audio_frame[1] = 1,
	38	.audio_format = AFMT_SPDIF,
	39	.audio_sample_rate = 44100,
	40	};
	41
	42	static const struct armada_drm_slave_config tda19988_config = {
	43	.i2c_adapter_id = 0,
	44	.crtcs = 1 << 0, /* Only LCD0 at the moment */
	45	.polled = DRM_CONNECTOR_POLL_CONNECT \| DRM_CONNECTOR_POLL_DISCONNECT,
	46	.interlace_allowed = true,
	47	.info = {
	48	.type = "tda998x",
	49	.addr = 0x70,
	50	.platform_data = &params,
	51	},
	52	};
	53	#endif
	54
96f60e37 RK	55	static void armada_drm_unref_work(struct work_struct *work)
	56	{
	57	struct armada_private *priv =
	58	container_of(work, struct armada_private, fb_unref_work);
	59	struct drm_framebuffer *fb;
	60
	61	while (kfifo_get(&priv->fb_unref, &fb))
	62	drm_framebuffer_unreference(fb);
	63	}
	64
	65	/* Must be called with dev->event_lock held */
	66	void __armada_drm_queue_unref_work(struct drm_device *dev,
	67	struct drm_framebuffer *fb)
	68	{
	69	struct armada_private *priv = dev->dev_private;
	70
	71	/*
	72	* Yes, we really must jump through these hoops just to store a
	73	* _pointer_ to something into the kfifo. This is utterly insane
	74	* and idiotic, because it kfifo requires the _data_ pointed to by
	75	* the pointer const, not the pointer itself. Not only that, but
	76	* you have to pass a pointer _to_ the pointer you want stored.
	77	*/
	78	const struct drm_framebuffer *silly_api_alert = fb;
	79	WARN_ON(!kfifo_put(&priv->fb_unref, &silly_api_alert));
	80	schedule_work(&priv->fb_unref_work);
	81	}
	82
	83	void armada_drm_queue_unref_work(struct drm_device *dev,
	84	struct drm_framebuffer *fb)
	85	{
	86	unsigned long flags;
	87
	88	spin_lock_irqsave(&dev->event_lock, flags);
	89	__armada_drm_queue_unref_work(dev, fb);
	90	spin_unlock_irqrestore(&dev->event_lock, flags);
	91	}
	92
	93	static int armada_drm_load(struct drm_device *dev, unsigned long flags)
	94	{
	95	const struct platform_device_id *id;
	96	struct armada_private *priv;
	97	struct resource *res[ARRAY_SIZE(priv->dcrtc)];
	98	struct resource *mem = NULL;
	99	int ret, n, i;
	100
	101	memset(res, 0, sizeof(res));
	102
	103	for (n = i = 0; ; n++) {
	104	struct resource *r = platform_get_resource(dev->platformdev,
	105	IORESOURCE_MEM, n);
	106	if (!r)
	107	break;
	108
	109	/* Resources above 64K are graphics memory */
	110	if (resource_size(r) > SZ_64K)
	111	mem = r;
	112	else if (i < ARRAY_SIZE(priv->dcrtc))
	113	res[i++] = r;
	114	else
	115	return -EINVAL;
	116	}
	117
	118	if (!res[0] \|\| !mem)
119	return -ENXIO;
120
121	if (!devm_request_mem_region(dev->dev, mem->start,
122	resource_size(mem), "armada-drm"))
123	return -EBUSY;
124
125	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
126	if (!priv) {
127	DRM_ERROR("failed to allocate private\n");
128	return -ENOMEM;
129	}
130
131	dev->dev_private = priv;
132
133	/* Get the implementation specific driver data. */
134	id = platform_get_device_id(dev->platformdev);
135	if (!id)
136	return -ENXIO;
137
138	priv->variant = (struct armada_variant *)id->driver_data;
139
140	ret = priv->variant->init(priv, dev->dev);
141	if (ret)
142	return ret;
143
144	INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work);
145	INIT_KFIFO(priv->fb_unref);
146
147	/* Mode setting support */
148	drm_mode_config_init(dev);
149	dev->mode_config.min_width = 320;
150	dev->mode_config.min_height = 200;
151
152	/*
153	* With vscale enabled, the maximum width is 1920 due to the
154	* 1920 by 3 lines RAM
155	*/
156	dev->mode_config.max_width = 1920;
157	dev->mode_config.max_height = 2048;
158
159	dev->mode_config.preferred_depth = 24;
160	dev->mode_config.funcs = &armada_drm_mode_config_funcs;
161	drm_mm_init(&priv->linear, mem->start, resource_size(mem));
162
163	/* Create all LCD controllers */
164	for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
165	if (!res[n])
166	break;
167
168	ret = armada_drm_crtc_create(dev, n, res[n]);
169	if (ret)
170	goto err_kms;
171	}
172
585b691e RK	173	#ifdef CONFIG_DRM_ARMADA_TDA1998X
	174	ret = armada_drm_connector_slave_create(dev, &tda19988_config);
	175	if (ret)
	176	goto err_kms;
	177	#endif
	178
96f60e37 RK	179	ret = drm_vblank_init(dev, n);
	180	if (ret)
	181	goto err_kms;
	182
	183	ret = drm_irq_install(dev);
	184	if (ret)
	185	goto err_kms;
	186
	187	dev->vblank_disable_allowed = 1;
	188
	189	ret = armada_fbdev_init(dev);
	190	if (ret)
	191	goto err_irq;
	192
	193	drm_kms_helper_poll_init(dev);
	194
	195	return 0;
	196
	197	err_irq:
	198	drm_irq_uninstall(dev);
	199	err_kms:
	200	drm_mode_config_cleanup(dev);
	201	drm_mm_takedown(&priv->linear);
	202	flush_work(&priv->fb_unref_work);
	203
	204	return ret;
	205	}
	206
	207	static int armada_drm_unload(struct drm_device *dev)
	208	{
	209	struct armada_private *priv = dev->dev_private;
	210
	211	drm_kms_helper_poll_fini(dev);
	212	armada_fbdev_fini(dev);
	213	drm_irq_uninstall(dev);
	214	drm_mode_config_cleanup(dev);
	215	drm_mm_takedown(&priv->linear);
	216	flush_work(&priv->fb_unref_work);
	217	dev->dev_private = NULL;
	218
	219	return 0;
	220	}
	221
	222	void armada_drm_vbl_event_add(struct armada_crtc *dcrtc,
	223	struct armada_vbl_event *evt)
	224	{
	225	unsigned long flags;
	226
	227	spin_lock_irqsave(&dcrtc->irq_lock, flags);
	228	if (list_empty(&evt->node)) {
	229	list_add_tail(&evt->node, &dcrtc->vbl_list);
	230
	231	drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
	232	}
	233	spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
	234	}
	235
	236	void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc,
	237	struct armada_vbl_event *evt)
	238	{
	239	if (!list_empty(&evt->node)) {
	240	list_del_init(&evt->node);
	241	drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
	242	}
243	}
244
245	void armada_drm_vbl_event_remove_unlocked(struct armada_crtc *dcrtc,
246	struct armada_vbl_event *evt)
247	{
248	unsigned long flags;
249
250	spin_lock_irqsave(&dcrtc->irq_lock, flags);
251	armada_drm_vbl_event_remove(dcrtc, evt);
252	spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
253	}
254
255	/* These are called under the vbl_lock. */
256	static int armada_drm_enable_vblank(struct drm_device *dev, int crtc)
257	{
258	struct armada_private *priv = dev->dev_private;
259	armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
260	return 0;
261	}
262
263	static void armada_drm_disable_vblank(struct drm_device *dev, int crtc)
264	{
265	struct armada_private *priv = dev->dev_private;
266	armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
267	}
268
269	static irqreturn_t armada_drm_irq_handler(int irq, void *arg)
270	{
271	struct drm_device *dev = arg;
272	struct armada_private *priv = dev->dev_private;
273	struct armada_crtc *dcrtc = priv->dcrtc[0];
274	uint32_t v, stat = readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR);
275	irqreturn_t handled = IRQ_NONE;
276
277	/*
278	* This is rediculous - rather than writing bits to clear, we
279	* have to set the actual status register value. This is racy.
280	*/
281	writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);
282
283	/* Mask out those interrupts we haven't enabled */
284	v = stat & dcrtc->irq_ena;
285
286	if (v & (VSYNC_IRQ\|GRA_FRAME_IRQ\|DUMB_FRAMEDONE)) {
287	armada_drm_crtc_irq(dcrtc, stat);
288	handled = IRQ_HANDLED;
289	}
290
291	return handled;
292	}
293
294	static int armada_drm_irq_postinstall(struct drm_device *dev)
295	{
296	struct armada_private *priv = dev->dev_private;
297	struct armada_crtc *dcrtc = priv->dcrtc[0];
298
299	spin_lock_irq(&dev->vbl_lock);
300	writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
301	writel(0, dcrtc->base + LCD_SPU_IRQ_ISR);
302	spin_unlock_irq(&dev->vbl_lock);
303
304	return 0;
305	}
306
307	static void armada_drm_irq_uninstall(struct drm_device *dev)
308	{
309	struct armada_private *priv = dev->dev_private;
310	struct armada_crtc *dcrtc = priv->dcrtc[0];
311
312	writel(0, dcrtc->base + LCD_SPU_IRQ_ENA);
313	}
314
315	static struct drm_ioctl_desc armada_ioctls[] = {
316	DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,
317	DRM_UNLOCKED),
318	DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl,
319	DRM_UNLOCKED),
320	DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl,
321	DRM_UNLOCKED),
322	};
323
324	static const struct file_operations armada_drm_fops = {
325	.owner = THIS_MODULE,
326	.llseek = no_llseek,
327	.read = drm_read,
328	.poll = drm_poll,
329	.unlocked_ioctl = drm_ioctl,
330	.mmap = drm_gem_mmap,
331	.open = drm_open,
332	.release = drm_release,
333	};
334
335	static struct drm_driver armada_drm_driver = {
336	.load = armada_drm_load,
337	.open = NULL,
338	.preclose = NULL,
339	.postclose = NULL,
340	.lastclose = NULL,
341	.unload = armada_drm_unload,
342	.get_vblank_counter = drm_vblank_count,
343	.enable_vblank = armada_drm_enable_vblank,
344	.disable_vblank = armada_drm_disable_vblank,
345	.irq_handler = armada_drm_irq_handler,
346	.irq_postinstall = armada_drm_irq_postinstall,
347	.irq_uninstall = armada_drm_irq_uninstall,
348	#ifdef CONFIG_DEBUG_FS
349	.debugfs_init = armada_drm_debugfs_init,
350	.debugfs_cleanup = armada_drm_debugfs_cleanup,
351	#endif
352	.gem_init_object = NULL,
353	.gem_free_object = armada_gem_free_object,
354	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
355	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
356	.gem_prime_export = armada_gem_prime_export,
357	.gem_prime_import = armada_gem_prime_import,
358	.dumb_create = armada_gem_dumb_create,
359	.dumb_map_offset = armada_gem_dumb_map_offset,
360	.dumb_destroy = armada_gem_dumb_destroy,
361	.gem_vm_ops = &armada_gem_vm_ops,
362	.major = 1,
363	.minor = 0,
364	.name = "armada-drm",
365	.desc = "Armada SoC DRM",
366	.date = "20120730",
367	.driver_features = DRIVER_GEM \| DRIVER_MODESET \|
368	DRIVER_HAVE_IRQ \| DRIVER_PRIME,
369	.ioctls = armada_ioctls,
370	.fops = &armada_drm_fops,
371	};
372
373	static int armada_drm_probe(struct platform_device *pdev)
374	{
375	return drm_platform_init(&armada_drm_driver, pdev);
376	}
377
378	static int armada_drm_remove(struct platform_device *pdev)
379	{
380	drm_platform_exit(&armada_drm_driver, pdev);
381	return 0;
382	}
383
384	static const struct platform_device_id armada_drm_platform_ids[] = {
385	{
386	.name = "armada-drm",
387	.driver_data = (unsigned long)&armada510_ops,
388	}, {
389	.name = "armada-510-drm",
390	.driver_data = (unsigned long)&armada510_ops,
391	},
392	{ },
393	};
394	MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
395
396	static struct platform_driver armada_drm_platform_driver = {
397	.probe = armada_drm_probe,
398	.remove = armada_drm_remove,
399	.driver = {
400	.name = "armada-drm",
401	.owner = THIS_MODULE,
402	},
403	.id_table = armada_drm_platform_ids,
404	};
405
406	static int __init armada_drm_init(void)
407	{
408	armada_drm_driver.num_ioctls = DRM_ARRAY_SIZE(armada_ioctls);
409	return platform_driver_register(&armada_drm_platform_driver);
410	}
411	module_init(armada_drm_init);
412
413	static void __exit armada_drm_exit(void)
414	{
415	platform_driver_unregister(&armada_drm_platform_driver);
416	}
417	module_exit(armada_drm_exit);
418
419	MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
420	MODULE_DESCRIPTION("Armada DRM Driver");
421	MODULE_LICENSE("GPL");
422	MODULE_ALIAS("platform:armada-drm");