[deliverable/linux.git] / drivers / gpu / drm / msm / mdp / mdp5 / mdp5_kms.c

/*
 * Copyright (C) 2013 Red Hat
 * 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/>.
 */


#include "msm_drv.h"
#include "msm_mmu.h"
#include "mdp5_kms.h"

static struct mdp5_platform_config *mdp5_get_config(struct platform_device *dev);

static int mdp5_hw_init(struct msm_kms *kms)
{
	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
	struct drm_device *dev = mdp5_kms->dev;
	uint32_t version, major, minor;
	int ret = 0;

	pm_runtime_get_sync(dev->dev);

	mdp5_enable(mdp5_kms);
	version = mdp5_read(mdp5_kms, REG_MDP5_MDP_VERSION);
	mdp5_disable(mdp5_kms);

	major = FIELD(version, MDP5_MDP_VERSION_MAJOR);
	minor = FIELD(version, MDP5_MDP_VERSION_MINOR);

	DBG("found MDP5 version v%d.%d", major, minor);

	if ((major != 1) || ((minor != 0) && (minor != 2))) {
		dev_err(dev->dev, "unexpected MDP version: v%d.%d\n",
				major, minor);
		ret = -ENXIO;
		goto out;
	}

	mdp5_kms->rev = minor;

	/* Magic unknown register writes:
	 *
	 *    W VBIF:0x004 00000001      (mdss_mdp.c:839)
	 *    W MDP5:0x2e0 0xe9          (mdss_mdp.c:839)
	 *    W MDP5:0x2e4 0x55          (mdss_mdp.c:839)
	 *    W MDP5:0x3ac 0xc0000ccc    (mdss_mdp.c:839)
	 *    W MDP5:0x3b4 0xc0000ccc    (mdss_mdp.c:839)
	 *    W MDP5:0x3bc 0xcccccc      (mdss_mdp.c:839)
	 *    W MDP5:0x4a8 0xcccc0c0     (mdss_mdp.c:839)
	 *    W MDP5:0x4b0 0xccccc0c0    (mdss_mdp.c:839)
	 *    W MDP5:0x4b8 0xccccc000    (mdss_mdp.c:839)
	 *
	 * Downstream fbdev driver gets these register offsets/values
	 * from DT.. not really sure what these registers are or if
	 * different values for different boards/SoC's, etc.  I guess
	 * they are the golden registers.
	 *
	 * Not setting these does not seem to cause any problem.  But
	 * we may be getting lucky with the bootloader initializing
	 * them for us.  OTOH, if we can always count on the bootloader
	 * setting the golden registers, then perhaps we don't need to
	 * care.
	 */

	mdp5_write(mdp5_kms, REG_MDP5_DISP_INTF_SEL, 0);
	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(0), 0);
	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(1), 0);
	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(2), 0);
	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(3), 0);

out:
	pm_runtime_put_sync(dev->dev);

	return ret;
}

static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,
		struct drm_encoder *encoder)
{
	return rate;
}

static void mdp5_preclose(struct msm_kms *kms, struct drm_file *file)
{
	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
	struct msm_drm_private *priv = mdp5_kms->dev->dev_private;
	unsigned i;

	for (i = 0; i < priv->num_crtcs; i++)
		mdp5_crtc_cancel_pending_flip(priv->crtcs[i], file);
}

static void mdp5_destroy(struct msm_kms *kms)
{
	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
	kfree(mdp5_kms);
}

static const struct mdp_kms_funcs kms_funcs = {
	.base = {
		.hw_init         = mdp5_hw_init,
		.irq_preinstall  = mdp5_irq_preinstall,
		.irq_postinstall = mdp5_irq_postinstall,
		.irq_uninstall   = mdp5_irq_uninstall,
		.irq             = mdp5_irq,
		.enable_vblank   = mdp5_enable_vblank,
		.disable_vblank  = mdp5_disable_vblank,
		.get_format      = mdp_get_format,
		.round_pixclk    = mdp5_round_pixclk,
		.preclose        = mdp5_preclose,
		.destroy         = mdp5_destroy,
	},
	.set_irqmask         = mdp5_set_irqmask,
};

int mdp5_disable(struct mdp5_kms *mdp5_kms)
{
	DBG("");

	clk_disable_unprepare(mdp5_kms->ahb_clk);
	clk_disable_unprepare(mdp5_kms->axi_clk);
	clk_disable_unprepare(mdp5_kms->core_clk);
	clk_disable_unprepare(mdp5_kms->lut_clk);

	return 0;
}

int mdp5_enable(struct mdp5_kms *mdp5_kms)
{
	DBG("");

	clk_prepare_enable(mdp5_kms->ahb_clk);
	clk_prepare_enable(mdp5_kms->axi_clk);
	clk_prepare_enable(mdp5_kms->core_clk);
	clk_prepare_enable(mdp5_kms->lut_clk);

	return 0;
}

static int modeset_init(struct mdp5_kms *mdp5_kms)
{
	static const enum mdp5_pipe crtcs[] = {
			SSPP_RGB0, SSPP_RGB1, SSPP_RGB2,
	};
	struct drm_device *dev = mdp5_kms->dev;
	struct msm_drm_private *priv = dev->dev_private;
	struct drm_encoder *encoder;
	int i, ret;

	/* construct CRTCs: */
	for (i = 0; i < ARRAY_SIZE(crtcs); i++) {
		struct drm_plane *plane;
		struct drm_crtc *crtc;

		plane = mdp5_plane_init(dev, crtcs[i], true);
		if (IS_ERR(plane)) {
			ret = PTR_ERR(plane);
			dev_err(dev->dev, "failed to construct plane for %s (%d)\n",
					pipe2name(crtcs[i]), ret);
			goto fail;
		}

		crtc  = mdp5_crtc_init(dev, plane, i);
		if (IS_ERR(crtc)) {
			ret = PTR_ERR(crtc);
			dev_err(dev->dev, "failed to construct crtc for %s (%d)\n",
					pipe2name(crtcs[i]), ret);
			goto fail;
		}
		priv->crtcs[priv->num_crtcs++] = crtc;
	}

	/* Construct encoder for HDMI: */
	encoder = mdp5_encoder_init(dev, 3, INTF_HDMI);
	if (IS_ERR(encoder)) {
		dev_err(dev->dev, "failed to construct encoder\n");
		ret = PTR_ERR(encoder);
		goto fail;
	}

	/* NOTE: the vsync and error irq's are actually associated with
	 * the INTF/encoder.. the easiest way to deal with this (ie. what
	 * we do now) is assume a fixed relationship between crtc's and
	 * encoders.  I'm not sure if there is ever a need to more freely
	 * assign crtcs to encoders, but if there is then we need to take
	 * care of error and vblank irq's that the crtc has registered,
	 * and also update user-requested vblank_mask.
	 */
	encoder->possible_crtcs = BIT(0);
	mdp5_crtc_set_intf(priv->crtcs[0], 3, INTF_HDMI);

	priv->encoders[priv->num_encoders++] = encoder;

	/* Construct bridge/connector for HDMI: */
	mdp5_kms->hdmi = hdmi_init(dev, encoder);
	if (IS_ERR(mdp5_kms->hdmi)) {
		ret = PTR_ERR(mdp5_kms->hdmi);
		dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
		goto fail;
	}

	return 0;

fail:
	return ret;
}

static const char *iommu_ports[] = {
		"mdp_0",
};

static int get_clk(struct platform_device *pdev, struct clk **clkp,
		const char *name)
{
	struct device *dev = &pdev->dev;
	struct clk *clk = devm_clk_get(dev, name);
	if (IS_ERR(clk)) {
		dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk));
		return PTR_ERR(clk);
	}
	*clkp = clk;
	return 0;
}

struct msm_kms *mdp5_kms_init(struct drm_device *dev)
{
	struct platform_device *pdev = dev->platformdev;
	struct mdp5_platform_config *config = mdp5_get_config(pdev);
	struct mdp5_kms *mdp5_kms;
	struct msm_kms *kms = NULL;
	struct msm_mmu *mmu;
	int ret;

	mdp5_kms = kzalloc(sizeof(*mdp5_kms), GFP_KERNEL);
	if (!mdp5_kms) {
		dev_err(dev->dev, "failed to allocate kms\n");
		ret = -ENOMEM;
		goto fail;
	}

	mdp_kms_init(&mdp5_kms->base, &kms_funcs);

	kms = &mdp5_kms->base.base;

	mdp5_kms->dev = dev;
	mdp5_kms->smp_blk_cnt = config->smp_blk_cnt;

	mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5");
	if (IS_ERR(mdp5_kms->mmio)) {
		ret = PTR_ERR(mdp5_kms->mmio);
		goto fail;
	}

	mdp5_kms->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF");
	if (IS_ERR(mdp5_kms->vbif)) {
		ret = PTR_ERR(mdp5_kms->vbif);
		goto fail;
	}

	mdp5_kms->vdd = devm_regulator_get(&pdev->dev, "vdd");
	if (IS_ERR(mdp5_kms->vdd)) {
		ret = PTR_ERR(mdp5_kms->vdd);
		goto fail;
	}

	ret = regulator_enable(mdp5_kms->vdd);
	if (ret) {
		dev_err(dev->dev, "failed to enable regulator vdd: %d\n", ret);
		goto fail;
	}

	ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk") ||
			get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk") ||
			get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src") ||
			get_clk(pdev, &mdp5_kms->core_clk, "core_clk") ||
			get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk") ||
			get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk");
	if (ret)
		goto fail;

	ret = clk_set_rate(mdp5_kms->src_clk, config->max_clk);

	/* make sure things are off before attaching iommu (bootloader could
	 * have left things on, in which case we'll start getting faults if
	 * we don't disable):
	 */
	mdp5_enable(mdp5_kms);
	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(0), 0);
	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(1), 0);
	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(2), 0);
	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(3), 0);
	mdp5_disable(mdp5_kms);
	mdelay(16);

	if (config->iommu) {
		mmu = msm_iommu_new(dev, config->iommu);
		if (IS_ERR(mmu)) {
			ret = PTR_ERR(mmu);
			goto fail;
		}
		ret = mmu->funcs->attach(mmu, iommu_ports,
				ARRAY_SIZE(iommu_ports));
		if (ret)
			goto fail;
	} else {
		dev_info(dev->dev, "no iommu, fallback to phys "
				"contig buffers for scanout\n");
		mmu = NULL;
	}

	mdp5_kms->id = msm_register_mmu(dev, mmu);
	if (mdp5_kms->id < 0) {
		ret = mdp5_kms->id;
		dev_err(dev->dev, "failed to register mdp5 iommu: %d\n", ret);
		goto fail;
	}

	ret = modeset_init(mdp5_kms);
	if (ret) {
		dev_err(dev->dev, "modeset_init failed: %d\n", ret);
		goto fail;
	}

	return kms;

fail:
	if (kms)
		mdp5_destroy(kms);
	return ERR_PTR(ret);
}

static struct mdp5_platform_config *mdp5_get_config(struct platform_device *dev)
{
	static struct mdp5_platform_config config = {};
#ifdef CONFIG_OF
	/* TODO */
#endif
	return &config;
}
Commit	Line	Data
06c0dd96 RC	1	/*
	2	* Copyright (C) 2013 Red Hat
	3	* Author: Rob Clark <robdclark@gmail.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License version 2 as published by
	7	* the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program. If not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18
	19	#include "msm_drv.h"
	20	#include "msm_mmu.h"
	21	#include "mdp5_kms.h"
	22
	23	static struct mdp5_platform_config mdp5_get_config(struct platform_device dev);
	24
	25	static int mdp5_hw_init(struct msm_kms *kms)
	26	{
	27	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
	28	struct drm_device *dev = mdp5_kms->dev;
	29	uint32_t version, major, minor;
	30	int ret = 0;
	31
	32	pm_runtime_get_sync(dev->dev);
	33
	34	mdp5_enable(mdp5_kms);
	35	version = mdp5_read(mdp5_kms, REG_MDP5_MDP_VERSION);
	36	mdp5_disable(mdp5_kms);
	37
	38	major = FIELD(version, MDP5_MDP_VERSION_MAJOR);
	39	minor = FIELD(version, MDP5_MDP_VERSION_MINOR);
	40
	41	DBG("found MDP5 version v%d.%d", major, minor);
	42
	43	if ((major != 1) \|\| ((minor != 0) && (minor != 2))) {
	44	dev_err(dev->dev, "unexpected MDP version: v%d.%d\n",
	45	major, minor);
	46	ret = -ENXIO;
	47	goto out;
	48	}
	49
	50	mdp5_kms->rev = minor;
	51
	52	/* Magic unknown register writes:
	53	*
	54	* W VBIF:0x004 00000001 (mdss_mdp.c:839)
	55	* W MDP5:0x2e0 0xe9 (mdss_mdp.c:839)
	56	* W MDP5:0x2e4 0x55 (mdss_mdp.c:839)
	57	* W MDP5:0x3ac 0xc0000ccc (mdss_mdp.c:839)
	58	* W MDP5:0x3b4 0xc0000ccc (mdss_mdp.c:839)
	59	* W MDP5:0x3bc 0xcccccc (mdss_mdp.c:839)
	60	* W MDP5:0x4a8 0xcccc0c0 (mdss_mdp.c:839)
	61	* W MDP5:0x4b0 0xccccc0c0 (mdss_mdp.c:839)
	62	* W MDP5:0x4b8 0xccccc000 (mdss_mdp.c:839)
	63	*
	64	* Downstream fbdev driver gets these register offsets/values
65	* from DT.. not really sure what these registers are or if
66	* different values for different boards/SoC's, etc. I guess
67	* they are the golden registers.
68	*
69	* Not setting these does not seem to cause any problem. But
70	* we may be getting lucky with the bootloader initializing
71	* them for us. OTOH, if we can always count on the bootloader
72	* setting the golden registers, then perhaps we don't need to
73	* care.
74	*/
75
76	mdp5_write(mdp5_kms, REG_MDP5_DISP_INTF_SEL, 0);
77	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(0), 0);
78	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(1), 0);
79	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(2), 0);
80	mdp5_write(mdp5_kms, REG_MDP5_CTL_OP(3), 0);
81
82	out:
83	pm_runtime_put_sync(dev->dev);
84
85	return ret;
86	}
87
88	static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,
89	struct drm_encoder *encoder)
90	{
91	return rate;
92	}
93
94	static void mdp5_preclose(struct msm_kms kms, struct drm_file file)
95	{
96	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
97	struct msm_drm_private *priv = mdp5_kms->dev->dev_private;
98	unsigned i;
99
100	for (i = 0; i < priv->num_crtcs; i++)
101	mdp5_crtc_cancel_pending_flip(priv->crtcs[i], file);
102	}
103
104	static void mdp5_destroy(struct msm_kms *kms)
105	{
106	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
107	kfree(mdp5_kms);
108	}
109
110	static const struct mdp_kms_funcs kms_funcs = {
111	.base = {
112	.hw_init = mdp5_hw_init,
113	.irq_preinstall = mdp5_irq_preinstall,
114	.irq_postinstall = mdp5_irq_postinstall,
115	.irq_uninstall = mdp5_irq_uninstall,
116	.irq = mdp5_irq,
117	.enable_vblank = mdp5_enable_vblank,
118	.disable_vblank = mdp5_disable_vblank,
119	.get_format = mdp_get_format,
120	.round_pixclk = mdp5_round_pixclk,
121	.preclose = mdp5_preclose,
122	.destroy = mdp5_destroy,
123	},
124	.set_irqmask = mdp5_set_irqmask,
125	};
126
127	int mdp5_disable(struct mdp5_kms *mdp5_kms)
128	{
129	DBG("");
130
131	clk_disable_unprepare(mdp5_kms->ahb_clk);
132	clk_disable_unprepare(mdp5_kms->axi_clk);
133	clk_disable_unprepare(mdp5_kms->core_clk);
134	clk_disable_unprepare(mdp5_kms->lut_clk);
135
136	return 0;
137	}
138
139	int mdp5_enable(struct mdp5_kms *mdp5_kms)
140	{
141	DBG("");
142
143	clk_prepare_enable(mdp5_kms->ahb_clk);
144	clk_prepare_enable(mdp5_kms->axi_clk);
145	clk_prepare_enable(mdp5_kms->core_clk);
146	clk_prepare_enable(mdp5_kms->lut_clk);
147
148	return 0;
149	}
150
151	static int modeset_init(struct mdp5_kms *mdp5_kms)
152	{
153	static const enum mdp5_pipe crtcs[] = {
154	SSPP_RGB0, SSPP_RGB1, SSPP_RGB2,
155	};
156	struct drm_device *dev = mdp5_kms->dev;
157	struct msm_drm_private *priv = dev->dev_private;
158	struct drm_encoder *encoder;
159	int i, ret;
160
161	/* construct CRTCs: */
162	for (i = 0; i < ARRAY_SIZE(crtcs); i++) {
163	struct drm_plane *plane;
164	struct drm_crtc *crtc;
165
166	plane = mdp5_plane_init(dev, crtcs[i], true);
167	if (IS_ERR(plane)) {
168	ret = PTR_ERR(plane);
169	dev_err(dev->dev, "failed to construct plane for %s (%d)\n",
170	pipe2name(crtcs[i]), ret);
171	goto fail;
172	}
173
174	crtc = mdp5_crtc_init(dev, plane, i);
175	if (IS_ERR(crtc)) {
176	ret = PTR_ERR(crtc);
177	dev_err(dev->dev, "failed to construct crtc for %s (%d)\n",
178	pipe2name(crtcs[i]), ret);
179	goto fail;
180	}
181	priv->crtcs[priv->num_crtcs++] = crtc;
182	}
183
184	/* Construct encoder for HDMI: */
185	encoder = mdp5_encoder_init(dev, 3, INTF_HDMI);
186	if (IS_ERR(encoder)) {
187	dev_err(dev->dev, "failed to construct encoder\n");
188	ret = PTR_ERR(encoder);
189	goto fail;
190	}
191
192	/* NOTE: the vsync and error irq's are actually associated with
193	* the INTF/encoder.. the easiest way to deal with this (ie. what
194	* we do now) is assume a fixed relationship between crtc's and
195	* encoders. I'm not sure if there is ever a need to more freely
196	* assign crtcs to encoders, but if there is then we need to take
197	* care of error and vblank irq's that the crtc has registered,
198	* and also update user-requested vblank_mask.
199	*/
200	encoder->possible_crtcs = BIT(0);
201	mdp5_crtc_set_intf(priv->crtcs[0], 3, INTF_HDMI);
202
203	priv->encoders[priv->num_encoders++] = encoder;
204
205	/* Construct bridge/connector for HDMI: */
206	mdp5_kms->hdmi = hdmi_init(dev, encoder);
207	if (IS_ERR(mdp5_kms->hdmi)) {
208	ret = PTR_ERR(mdp5_kms->hdmi);
209	dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
210	goto fail;
211	}
212
213	return 0;
214
215	fail:
216	return ret;
217	}
218
219	static const char *iommu_ports[] = {
220	"mdp_0",
221	};
222
223	static int get_clk(struct platform_device pdev, struct clk *clkp,
224	const char *name)
225	{
226	struct device *dev = &pdev->dev;
227	struct clk *clk = devm_clk_get(dev, name);
228	if (IS_ERR(clk)) {
229	dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk));
230	return PTR_ERR(clk);
231	}
232	*clkp = clk;
233	return 0;
234	}
235
236	struct msm_kms mdp5_kms_init(struct drm_device dev)
237	{
238	struct platform_device *pdev = dev->platformdev;
239	struct mdp5_platform_config *config = mdp5_get_config(pdev);
240	struct mdp5_kms *mdp5_kms;
241	struct msm_kms *kms = NULL;
242	struct msm_mmu *mmu;
243	int ret;
244
245	mdp5_kms = kzalloc(sizeof(*mdp5_kms), GFP_KERNEL);
246	if (!mdp5_kms) {
247	dev_err(dev->dev, "failed to allocate kms\n");
248	ret = -ENOMEM;
249	goto fail;
250	}
251
252	mdp_kms_init(&mdp5_kms->base, &kms_funcs);
253
254	kms = &mdp5_kms->base.base;
255
256	mdp5_kms->dev = dev;
257	mdp5_kms->smp_blk_cnt = config->smp_blk_cnt;
258
259	mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5");
260	if (IS_ERR(mdp5_kms->mmio)) {
261	ret = PTR_ERR(mdp5_kms->mmio);
262	goto fail;
263	}
264
265	mdp5_kms->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF");
266	if (IS_ERR(mdp5_kms->vbif)) {
267	ret = PTR_ERR(mdp5_kms->vbif);
268	goto fail;
269	}
270
271	mdp5_kms->vdd = devm_regulator_get(&pdev->dev, "vdd");
272	if (IS_ERR(mdp5_kms->vdd)) {
273	ret = PTR_ERR(mdp5_kms->vdd);
274	goto fail;
275	}
276
277	ret = regulator_enable(mdp5_kms->vdd);
278	if (ret) {
279	dev_err(dev->dev, "failed to enable regulator vdd: %d\n", ret);
280	goto fail;
281	}
282
283	ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk") \|\|
284	get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk") \|\|
285	get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src") \|\|
286	get_clk(pdev, &mdp5_kms->core_clk, "core_clk") \|\|
287	get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk") \|\|
288	get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk");
289	if (ret)
290	goto fail;
291
292	ret = clk_set_rate(mdp5_kms->src_clk, config->max_clk);
293
294	/* make sure things are off before attaching iommu (bootloader could
295	* have left things on, in which case we'll start getting faults if
296	* we don't disable):
297	*/
298	mdp5_enable(mdp5_kms);
299	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(0), 0);
300	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(1), 0);
301	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(2), 0);
302	mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(3), 0);
303	mdp5_disable(mdp5_kms);
304	mdelay(16);
305
306	if (config->iommu) {
307	mmu = msm_iommu_new(dev, config->iommu);
308	if (IS_ERR(mmu)) {
309	ret = PTR_ERR(mmu);
310	goto fail;
311	}
312	ret = mmu->funcs->attach(mmu, iommu_ports,
313	ARRAY_SIZE(iommu_ports));
314	if (ret)
315	goto fail;
316	} else {
317	dev_info(dev->dev, "no iommu, fallback to phys "
318	"contig buffers for scanout\n");
319	mmu = NULL;
320	}
321
322	mdp5_kms->id = msm_register_mmu(dev, mmu);
323	if (mdp5_kms->id < 0) {
324	ret = mdp5_kms->id;
325	dev_err(dev->dev, "failed to register mdp5 iommu: %d\n", ret);
326	goto fail;
327	}
328
329	ret = modeset_init(mdp5_kms);
330	if (ret) {
331	dev_err(dev->dev, "modeset_init failed: %d\n", ret);
332	goto fail;
333	}
334
335	return kms;
336
337	fail:
338	if (kms)
339	mdp5_destroy(kms);
340	return ERR_PTR(ret);
341	}
342
343	static struct mdp5_platform_config mdp5_get_config(struct platform_device dev)
344	{
345	static struct mdp5_platform_config config = {};
346	#ifdef CONFIG_OF
347	/* TODO */
348	#endif
349	return &config;
350	}