[deliverable/linux.git] / drivers / gpu / drm / shmobile / shmob_drm_drv.c

/*
 * shmob_drm_drv.c  --  SH Mobile DRM driver
 *
 * Copyright (C) 2012 Renesas Corporation
 *
 * 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/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>

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

#include "shmob_drm_crtc.h"
#include "shmob_drm_drv.h"
#include "shmob_drm_kms.h"
#include "shmob_drm_plane.h"
#include "shmob_drm_regs.h"

/* -----------------------------------------------------------------------------
 * Hardware initialization
 */

static int __devinit shmob_drm_init_interface(struct shmob_drm_device *sdev)
{
	static const u32 ldmt1r[] = {
		[SHMOB_DRM_IFACE_RGB8] = LDMT1R_MIFTYP_RGB8,
		[SHMOB_DRM_IFACE_RGB9] = LDMT1R_MIFTYP_RGB9,
		[SHMOB_DRM_IFACE_RGB12A] = LDMT1R_MIFTYP_RGB12A,
		[SHMOB_DRM_IFACE_RGB12B] = LDMT1R_MIFTYP_RGB12B,
		[SHMOB_DRM_IFACE_RGB16] = LDMT1R_MIFTYP_RGB16,
		[SHMOB_DRM_IFACE_RGB18] = LDMT1R_MIFTYP_RGB18,
		[SHMOB_DRM_IFACE_RGB24] = LDMT1R_MIFTYP_RGB24,
		[SHMOB_DRM_IFACE_YUV422] = LDMT1R_MIFTYP_YCBCR,
		[SHMOB_DRM_IFACE_SYS8A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8A,
		[SHMOB_DRM_IFACE_SYS8B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8B,
		[SHMOB_DRM_IFACE_SYS8C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8C,
		[SHMOB_DRM_IFACE_SYS8D] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS8D,
		[SHMOB_DRM_IFACE_SYS9] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS9,
		[SHMOB_DRM_IFACE_SYS12] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS12,
		[SHMOB_DRM_IFACE_SYS16A] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16A,
		[SHMOB_DRM_IFACE_SYS16B] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16B,
		[SHMOB_DRM_IFACE_SYS16C] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS16C,
		[SHMOB_DRM_IFACE_SYS18] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS18,
		[SHMOB_DRM_IFACE_SYS24] = LDMT1R_IFM | LDMT1R_MIFTYP_SYS24,
	};

	if (sdev->pdata->iface.interface >= ARRAY_SIZE(ldmt1r)) {
		dev_err(sdev->dev, "invalid interface type %u\n",
			sdev->pdata->iface.interface);
		return -EINVAL;
	}

	sdev->ldmt1r = ldmt1r[sdev->pdata->iface.interface];
	return 0;
}

static int __devinit shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
					    enum shmob_drm_clk_source clksrc)
{
	struct clk *clk;
	char *clkname;

	switch (clksrc) {
	case SHMOB_DRM_CLK_BUS:
		clkname = "bus_clk";
		sdev->lddckr = LDDCKR_ICKSEL_BUS;
		break;
	case SHMOB_DRM_CLK_PERIPHERAL:
		clkname = "peripheral_clk";
		sdev->lddckr = LDDCKR_ICKSEL_MIPI;
		break;
	case SHMOB_DRM_CLK_EXTERNAL:
		clkname = NULL;
		sdev->lddckr = LDDCKR_ICKSEL_HDMI;
		break;
	default:
		return -EINVAL;
	}

	clk = clk_get(sdev->dev, clkname);
	if (IS_ERR(clk)) {
		dev_err(sdev->dev, "cannot get dot clock %s\n", clkname);
		return PTR_ERR(clk);
	}

	sdev->clock = clk;
	return 0;
}

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

static int shmob_drm_unload(struct drm_device *dev)
{
	struct shmob_drm_device *sdev = dev->dev_private;

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

	if (sdev->clock)
		clk_put(sdev->clock);

	if (sdev->mmio)
		iounmap(sdev->mmio);

	dev->dev_private = NULL;
	kfree(sdev);

	return 0;
}

static int shmob_drm_load(struct drm_device *dev, unsigned long flags)
{
	struct shmob_drm_platform_data *pdata = dev->dev->platform_data;
	struct platform_device *pdev = dev->platformdev;
	struct shmob_drm_device *sdev;
	struct resource *res;
	unsigned int i;
	int ret;

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

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

	sdev->dev = &pdev->dev;
	sdev->pdata = pdata;
	spin_lock_init(&sdev->irq_lock);

	sdev->ddev = dev;
	dev->dev_private = sdev;

	/* I/O resources and clocks */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res == NULL) {
		dev_err(&pdev->dev, "failed to get memory resource\n");
		ret = -EINVAL;
		goto done;
	}

	sdev->mmio = ioremap_nocache(res->start, resource_size(res));
	if (sdev->mmio == NULL) {
		dev_err(&pdev->dev, "failed to remap memory resource\n");
		ret = -ENOMEM;
		goto done;
	}

	ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
	if (ret < 0)
		goto done;

	ret = shmob_drm_init_interface(sdev);
	if (ret < 0)
		goto done;

	ret = shmob_drm_modeset_init(sdev);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to initialize mode setting\n");
		goto done;
	}

	for (i = 0; i < 4; ++i) {
		ret = shmob_drm_plane_create(sdev, i);
		if (ret < 0) {
			dev_err(&pdev->dev, "failed to create plane %u\n", i);
			goto done;
		}
	}

	ret = drm_vblank_init(dev, 1);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to initialize vblank\n");
		goto done;
	}

	ret = drm_irq_install(dev);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to install IRQ handler\n");
		goto done;
	}

done:
	if (ret)
		shmob_drm_unload(dev);

	return ret;
}

static void shmob_drm_preclose(struct drm_device *dev, struct drm_file *file)
{
	struct shmob_drm_device *sdev = dev->dev_private;

	shmob_drm_crtc_cancel_page_flip(&sdev->crtc, file);
}

static irqreturn_t shmob_drm_irq(int irq, void *arg)
{
	struct drm_device *dev = arg;
	struct shmob_drm_device *sdev = dev->dev_private;
	unsigned long flags;
	u32 status;

	/* Acknowledge interrupts. Putting interrupt enable and interrupt flag
	 * bits in the same register is really brain-dead design and requires
	 * taking a spinlock.
	 */
	spin_lock_irqsave(&sdev->irq_lock, flags);
	status = lcdc_read(sdev, LDINTR);
	lcdc_write(sdev, LDINTR, status ^ LDINTR_STATUS_MASK);
	spin_unlock_irqrestore(&sdev->irq_lock, flags);

	if (status & LDINTR_VES) {
		drm_handle_vblank(dev, 0);
		shmob_drm_crtc_finish_page_flip(&sdev->crtc);
	}

	return IRQ_HANDLED;
}

static int shmob_drm_enable_vblank(struct drm_device *dev, int crtc)
{
	struct shmob_drm_device *sdev = dev->dev_private;

	shmob_drm_crtc_enable_vblank(sdev, true);

	return 0;
}

static void shmob_drm_disable_vblank(struct drm_device *dev, int crtc)
{
	struct shmob_drm_device *sdev = dev->dev_private;

	shmob_drm_crtc_enable_vblank(sdev, false);
}

static const struct file_operations shmob_drm_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,
	.fasync		= drm_fasync,
	.llseek		= no_llseek,
	.mmap		= drm_gem_cma_mmap,
};

static struct drm_driver shmob_drm_driver = {
	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET,
	.load			= shmob_drm_load,
	.unload			= shmob_drm_unload,
	.preclose		= shmob_drm_preclose,
	.irq_handler		= shmob_drm_irq,
	.get_vblank_counter	= drm_vblank_count,
	.enable_vblank		= shmob_drm_enable_vblank,
	.disable_vblank		= shmob_drm_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_cma_dumb_destroy,
	.fops			= &shmob_drm_fops,
	.name			= "shmob-drm",
	.desc			= "Renesas SH Mobile DRM",
	.date			= "20120424",
	.major			= 1,
	.minor			= 0,
};

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

#if CONFIG_PM_SLEEP
static int shmob_drm_pm_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct drm_device *ddev = platform_get_drvdata(pdev);
	struct shmob_drm_device *sdev = ddev->dev_private;

	drm_kms_helper_poll_disable(ddev);
	shmob_drm_crtc_suspend(&sdev->crtc);

	return 0;
}

static int shmob_drm_pm_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct drm_device *ddev = platform_get_drvdata(pdev);
	struct shmob_drm_device *sdev = ddev->dev_private;

	mutex_lock(&sdev->ddev->mode_config.mutex);
	shmob_drm_crtc_resume(&sdev->crtc);
	mutex_unlock(&sdev->ddev->mode_config.mutex);

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

static const struct dev_pm_ops shmob_drm_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
};

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

static int __devinit shmob_drm_probe(struct platform_device *pdev)
{
	return drm_platform_init(&shmob_drm_driver, pdev);
}

static int __devexit shmob_drm_remove(struct platform_device *pdev)
{
	drm_platform_exit(&shmob_drm_driver, pdev);

	return 0;
}

static struct platform_driver shmob_drm_platform_driver = {
	.probe		= shmob_drm_probe,
	.remove		= __devexit_p(shmob_drm_remove),
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= "shmob-drm",
		.pm	= &shmob_drm_pm_ops,
	},
};

module_platform_driver(shmob_drm_platform_driver);

MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_DESCRIPTION("Renesas SH Mobile DRM Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
51c13278 LP	1	/*
	2	* shmob_drm_drv.c -- SH Mobile DRM driver
	3	*
	4	* Copyright (C) 2012 Renesas Corporation
	5	*
	6	* 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>
	18	#include <linux/platform_device.h>
	19	#include <linux/pm.h>
	20	#include <linux/slab.h>
	21
	22	#include <drm/drmP.h>
	23	#include <drm/drm_crtc_helper.h>
	24	#include <drm/drm_gem_cma_helper.h>
	25
	26	#include "shmob_drm_crtc.h"
	27	#include "shmob_drm_drv.h"
	28	#include "shmob_drm_kms.h"
	29	#include "shmob_drm_plane.h"
	30	#include "shmob_drm_regs.h"
	31
	32	/* -----------------------------------------------------------------------------
	33	* Hardware initialization
	34	*/
	35
	36	static int __devinit shmob_drm_init_interface(struct shmob_drm_device *sdev)
	37	{
	38	static const u32 ldmt1r[] = {
	39	[SHMOB_DRM_IFACE_RGB8] = LDMT1R_MIFTYP_RGB8,
	40	[SHMOB_DRM_IFACE_RGB9] = LDMT1R_MIFTYP_RGB9,
	41	[SHMOB_DRM_IFACE_RGB12A] = LDMT1R_MIFTYP_RGB12A,
	42	[SHMOB_DRM_IFACE_RGB12B] = LDMT1R_MIFTYP_RGB12B,
	43	[SHMOB_DRM_IFACE_RGB16] = LDMT1R_MIFTYP_RGB16,
	44	[SHMOB_DRM_IFACE_RGB18] = LDMT1R_MIFTYP_RGB18,
	45	[SHMOB_DRM_IFACE_RGB24] = LDMT1R_MIFTYP_RGB24,
	46	[SHMOB_DRM_IFACE_YUV422] = LDMT1R_MIFTYP_YCBCR,
	47	[SHMOB_DRM_IFACE_SYS8A] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS8A,
	48	[SHMOB_DRM_IFACE_SYS8B] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS8B,
	49	[SHMOB_DRM_IFACE_SYS8C] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS8C,
	50	[SHMOB_DRM_IFACE_SYS8D] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS8D,
	51	[SHMOB_DRM_IFACE_SYS9] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS9,
	52	[SHMOB_DRM_IFACE_SYS12] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS12,
	53	[SHMOB_DRM_IFACE_SYS16A] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS16A,
	54	[SHMOB_DRM_IFACE_SYS16B] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS16B,
	55	[SHMOB_DRM_IFACE_SYS16C] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS16C,
	56	[SHMOB_DRM_IFACE_SYS18] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS18,
	57	[SHMOB_DRM_IFACE_SYS24] = LDMT1R_IFM \| LDMT1R_MIFTYP_SYS24,
	58	};
	59
	60	if (sdev->pdata->iface.interface >= ARRAY_SIZE(ldmt1r)) {
	61	dev_err(sdev->dev, "invalid interface type %u\n",
	62	sdev->pdata->iface.interface);
	63	return -EINVAL;
	64	}
65
66	sdev->ldmt1r = ldmt1r[sdev->pdata->iface.interface];
67	return 0;
68	}
69
70	static int __devinit shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
71	enum shmob_drm_clk_source clksrc)
72	{
73	struct clk *clk;
74	char *clkname;
75
76	switch (clksrc) {
77	case SHMOB_DRM_CLK_BUS:
78	clkname = "bus_clk";
79	sdev->lddckr = LDDCKR_ICKSEL_BUS;
80	break;
81	case SHMOB_DRM_CLK_PERIPHERAL:
82	clkname = "peripheral_clk";
83	sdev->lddckr = LDDCKR_ICKSEL_MIPI;
84	break;
85	case SHMOB_DRM_CLK_EXTERNAL:
86	clkname = NULL;
87	sdev->lddckr = LDDCKR_ICKSEL_HDMI;
88	break;
89	default:
90	return -EINVAL;
91	}
92
93	clk = clk_get(sdev->dev, clkname);
94	if (IS_ERR(clk)) {
95	dev_err(sdev->dev, "cannot get dot clock %s\n", clkname);
96	return PTR_ERR(clk);
97	}
98
99	sdev->clock = clk;
100	return 0;
101	}
102
103	/* -----------------------------------------------------------------------------
104	* DRM operations
105	*/
106
107	static int shmob_drm_unload(struct drm_device *dev)
108	{
109	struct shmob_drm_device *sdev = dev->dev_private;
110
111	drm_kms_helper_poll_fini(dev);
112	drm_mode_config_cleanup(dev);
113	drm_vblank_cleanup(dev);
114	drm_irq_uninstall(dev);
115
116	if (sdev->clock)
117	clk_put(sdev->clock);
118
119	if (sdev->mmio)
120	iounmap(sdev->mmio);
121
122	dev->dev_private = NULL;
123	kfree(sdev);
124
125	return 0;
126	}
127
128	static int shmob_drm_load(struct drm_device *dev, unsigned long flags)
129	{
130	struct shmob_drm_platform_data *pdata = dev->dev->platform_data;
131	struct platform_device *pdev = dev->platformdev;
132	struct shmob_drm_device *sdev;
133	struct resource *res;
134	unsigned int i;
135	int ret;
136
137	if (pdata == NULL) {
138	dev_err(dev->dev, "no platform data\n");
139	return -EINVAL;
140	}
141
142	sdev = kzalloc(sizeof(*sdev), GFP_KERNEL);
143	if (sdev == NULL) {
144	dev_err(dev->dev, "failed to allocate private data\n");
145	return -ENOMEM;
146	}
147
148	sdev->dev = &pdev->dev;
149	sdev->pdata = pdata;
150	spin_lock_init(&sdev->irq_lock);
151
152	sdev->ddev = dev;
153	dev->dev_private = sdev;
154
155	/* I/O resources and clocks */
156	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
157	if (res == NULL) {
158	dev_err(&pdev->dev, "failed to get memory resource\n");
159	ret = -EINVAL;
160	goto done;
161	}
162
163	sdev->mmio = ioremap_nocache(res->start, resource_size(res));
164	if (sdev->mmio == NULL) {
165	dev_err(&pdev->dev, "failed to remap memory resource\n");
166	ret = -ENOMEM;
167	goto done;
168	}
169
170	ret = shmob_drm_setup_clocks(sdev, pdata->clk_source);
171	if (ret < 0)
172	goto done;
173
174	ret = shmob_drm_init_interface(sdev);
175	if (ret < 0)
176	goto done;
177
178	ret = shmob_drm_modeset_init(sdev);
179	if (ret < 0) {
180	dev_err(&pdev->dev, "failed to initialize mode setting\n");
181	goto done;
182	}
183
184	for (i = 0; i < 4; ++i) {
185	ret = shmob_drm_plane_create(sdev, i);
186	if (ret < 0) {
187	dev_err(&pdev->dev, "failed to create plane %u\n", i);
188	goto done;
189	}
190	}
191
192	ret = drm_vblank_init(dev, 1);
193	if (ret < 0) {
194	dev_err(&pdev->dev, "failed to initialize vblank\n");
195	goto done;
196	}
197
198	ret = drm_irq_install(dev);
199	if (ret < 0) {
200	dev_err(&pdev->dev, "failed to install IRQ handler\n");
201	goto done;
202	}
203
204	done:
205	if (ret)
206	shmob_drm_unload(dev);
207
208	return ret;
209	}
210
211	static void shmob_drm_preclose(struct drm_device dev, struct drm_file file)
212	{
213	struct shmob_drm_device *sdev = dev->dev_private;
214
215	shmob_drm_crtc_cancel_page_flip(&sdev->crtc, file);
216	}
217
218	static irqreturn_t shmob_drm_irq(int irq, void *arg)
219	{
220	struct drm_device *dev = arg;
221	struct shmob_drm_device *sdev = dev->dev_private;
222	unsigned long flags;
223	u32 status;
224
225	/* Acknowledge interrupts. Putting interrupt enable and interrupt flag
226	* bits in the same register is really brain-dead design and requires
227	* taking a spinlock.
228	*/
229	spin_lock_irqsave(&sdev->irq_lock, flags);
230	status = lcdc_read(sdev, LDINTR);
231	lcdc_write(sdev, LDINTR, status ^ LDINTR_STATUS_MASK);
232	spin_unlock_irqrestore(&sdev->irq_lock, flags);
233
234	if (status & LDINTR_VES) {
235	drm_handle_vblank(dev, 0);
236	shmob_drm_crtc_finish_page_flip(&sdev->crtc);
237	}
238
239	return IRQ_HANDLED;
240	}
241
242	static int shmob_drm_enable_vblank(struct drm_device *dev, int crtc)
243	{
244	struct shmob_drm_device *sdev = dev->dev_private;
245
246	shmob_drm_crtc_enable_vblank(sdev, true);
247
248	return 0;
249	}
250
251	static void shmob_drm_disable_vblank(struct drm_device *dev, int crtc)
252	{
253	struct shmob_drm_device *sdev = dev->dev_private;
254
255	shmob_drm_crtc_enable_vblank(sdev, false);
256	}
257
258	static const struct file_operations shmob_drm_fops = {
259	.owner = THIS_MODULE,
260	.open = drm_open,
261	.release = drm_release,
262	.unlocked_ioctl = drm_ioctl,
263	#ifdef CONFIG_COMPAT
264	.compat_ioctl = drm_compat_ioctl,
265	#endif
266	.poll = drm_poll,
267	.read = drm_read,
268	.fasync = drm_fasync,
269	.llseek = no_llseek,
270	.mmap = drm_gem_cma_mmap,
271	};
272
273	static struct drm_driver shmob_drm_driver = {
274	.driver_features = DRIVER_HAVE_IRQ \| DRIVER_GEM \| DRIVER_MODESET,
275	.load = shmob_drm_load,
276	.unload = shmob_drm_unload,
277	.preclose = shmob_drm_preclose,
278	.irq_handler = shmob_drm_irq,
279	.get_vblank_counter = drm_vblank_count,
280	.enable_vblank = shmob_drm_enable_vblank,
281	.disable_vblank = shmob_drm_disable_vblank,
282	.gem_free_object = drm_gem_cma_free_object,
283	.gem_vm_ops = &drm_gem_cma_vm_ops,
284	.dumb_create = drm_gem_cma_dumb_create,
285	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
286	.dumb_destroy = drm_gem_cma_dumb_destroy,
287	.fops = &shmob_drm_fops,
288	.name = "shmob-drm",
289	.desc = "Renesas SH Mobile DRM",
290	.date = "20120424",
291	.major = 1,
292	.minor = 0,
293	};
294
295	/* -----------------------------------------------------------------------------
296	* Power management
297	*/
298
299	#if CONFIG_PM_SLEEP
300	static int shmob_drm_pm_suspend(struct device *dev)
301	{
302	struct platform_device *pdev = to_platform_device(dev);
303	struct drm_device *ddev = platform_get_drvdata(pdev);
304	struct shmob_drm_device *sdev = ddev->dev_private;
305
306	drm_kms_helper_poll_disable(ddev);
307	shmob_drm_crtc_suspend(&sdev->crtc);
308
309	return 0;
310	}
311
312	static int shmob_drm_pm_resume(struct device *dev)
313	{
314	struct platform_device *pdev = to_platform_device(dev);
315	struct drm_device *ddev = platform_get_drvdata(pdev);
316	struct shmob_drm_device *sdev = ddev->dev_private;
317
318	mutex_lock(&sdev->ddev->mode_config.mutex);
319	shmob_drm_crtc_resume(&sdev->crtc);
320	mutex_unlock(&sdev->ddev->mode_config.mutex);
321
322	drm_kms_helper_poll_enable(sdev->ddev);
323	return 0;
324	}
325	#endif
326
327	static const struct dev_pm_ops shmob_drm_pm_ops = {
328	SET_SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
329	};
330
331	/* -----------------------------------------------------------------------------
332	* Platform driver
333	*/
334
335	static int __devinit shmob_drm_probe(struct platform_device *pdev)
336	{
337	return drm_platform_init(&shmob_drm_driver, pdev);
338	}
339
340	static int __devexit shmob_drm_remove(struct platform_device *pdev)
341	{
342	drm_platform_exit(&shmob_drm_driver, pdev);
343
344	return 0;
345	}
346
347	static struct platform_driver shmob_drm_platform_driver = {
348	.probe = shmob_drm_probe,
349	.remove = __devexit_p(shmob_drm_remove),
350	.driver = {
351	.owner = THIS_MODULE,
352	.name = "shmob-drm",
353	.pm = &shmob_drm_pm_ops,
354	},
355	};
356
357	module_platform_driver(shmob_drm_platform_driver);
358
359	MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
360	MODULE_DESCRIPTION("Renesas SH Mobile DRM Driver");
361	MODULE_LICENSE("GPL");