[deliverable/linux.git] / drivers / gpu / drm / sti / sti_compositor.c

/*
 * Copyright (C) STMicroelectronics SA 2014
 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
 *          Fabien Dessenne <fabien.dessenne@st.com>
 *          for STMicroelectronics.
 * License terms:  GNU General Public License (GPL), version 2
 */

#include <linux/component.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/reset.h>

#include <drm/drmP.h>

#include "sti_compositor.h"
#include "sti_crtc.h"
#include "sti_cursor.h"
#include "sti_drv.h"
#include "sti_gdp.h"
#include "sti_plane.h"
#include "sti_vid.h"
#include "sti_vtg.h"

/*
 * stiH407 compositor properties
 */
struct sti_compositor_data stih407_compositor_data = {
	.nb_subdev = 8,
	.subdev_desc = {
			{STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},
			{STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
			{STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
			{STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},
			{STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},
			{STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700},
			{STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},
			{STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},
	},
};

/*
 * stiH416 compositor properties
 * Note:
 * on stih416 MIXER_AUX has a different base address from MIXER_MAIN
 * Moreover, GDPx is different for Main and Aux Mixer. So this subdev map does
 * not fit for stiH416 if we want to enable the MIXER_AUX.
 */
struct sti_compositor_data stih416_compositor_data = {
	.nb_subdev = 3,
	.subdev_desc = {
			{STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
			{STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
			{STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00}
	},
};

int sti_compositor_debufs_init(struct sti_compositor *compo,
			       struct drm_minor *minor)
{
	int ret = 0, i;

	for (i = 0; compo->vid[i]; i++) {
		ret = vid_debugfs_init(compo->vid[i], minor);
		if (ret)
			return ret;
	}

	for (i = 0; compo->mixer[i]; i++) {
		ret = sti_mixer_debugfs_init(compo->mixer[i], minor);
		if (ret)
			return ret;
	}

	return 0;
}

static int sti_compositor_bind(struct device *dev,
			       struct device *master,
			       void *data)
{
	struct sti_compositor *compo = dev_get_drvdata(dev);
	struct drm_device *drm_dev = data;
	unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0;
	struct sti_private *dev_priv = drm_dev->dev_private;
	struct drm_plane *cursor = NULL;
	struct drm_plane *primary = NULL;
	struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc;
	unsigned int array_size = compo->data.nb_subdev;

	dev_priv->compo = compo;

	/* Register mixer subdev and video subdev first */
	for (i = 0; i < array_size; i++) {
		switch (desc[i].type) {
		case STI_VID_SUBDEV:
			compo->vid[vid_id++] =
			    sti_vid_create(compo->dev, drm_dev, desc[i].id,
					   compo->regs + desc[i].offset);
			break;
		case STI_MIXER_MAIN_SUBDEV:
		case STI_MIXER_AUX_SUBDEV:
			compo->mixer[mixer_id++] =
			    sti_mixer_create(compo->dev, drm_dev, desc[i].id,
					     compo->regs + desc[i].offset);
			break;
		case STI_GPD_SUBDEV:
		case STI_CURSOR_SUBDEV:
			/* Nothing to do, wait for the second round */
			break;
		default:
			DRM_ERROR("Unknow subdev compoment type\n");
			return 1;
		}
	}

	/* Register the other subdevs, create crtc and planes */
	for (i = 0; i < array_size; i++) {
		enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;

		if (crtc_id < mixer_id)
			plane_type = DRM_PLANE_TYPE_PRIMARY;

		switch (desc[i].type) {
		case STI_MIXER_MAIN_SUBDEV:
		case STI_MIXER_AUX_SUBDEV:
		case STI_VID_SUBDEV:
			/* Nothing to do, already done at the first round */
			break;
		case STI_CURSOR_SUBDEV:
			cursor = sti_cursor_create(drm_dev, compo->dev,
						   desc[i].id,
						   compo->regs + desc[i].offset,
						   1);
			if (!cursor) {
				DRM_ERROR("Can't create CURSOR plane\n");
				break;
			}
			break;
		case STI_GPD_SUBDEV:
			primary = sti_gdp_create(drm_dev, compo->dev,
						 desc[i].id,
						 compo->regs + desc[i].offset,
						 (1 << mixer_id) - 1,
						 plane_type);
			if (!primary) {
				DRM_ERROR("Can't create GDP plane\n");
				break;
			}
			break;
		default:
			DRM_ERROR("Unknown subdev compoment type\n");
			return 1;
		}

		/* The first planes are reserved for primary planes*/
		if (crtc_id < mixer_id && primary) {
			sti_crtc_init(drm_dev, compo->mixer[crtc_id],
				      primary, cursor);
			crtc_id++;
			cursor = NULL;
			primary = NULL;
		}
	}

	drm_vblank_init(drm_dev, crtc_id);
	/* Allow usage of vblank without having to call drm_irq_install */
	drm_dev->irq_enabled = 1;

	return 0;
}

static void sti_compositor_unbind(struct device *dev, struct device *master,
	void *data)
{
	/* do nothing */
}

static const struct component_ops sti_compositor_ops = {
	.bind	= sti_compositor_bind,
	.unbind	= sti_compositor_unbind,
};

static const struct of_device_id compositor_of_match[] = {
	{
		.compatible = "st,stih416-compositor",
		.data = &stih416_compositor_data,
	}, {
		.compatible = "st,stih407-compositor",
		.data = &stih407_compositor_data,
	}, {
		/* end node */
	}
};
MODULE_DEVICE_TABLE(of, compositor_of_match);

static int sti_compositor_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *np = dev->of_node;
	struct device_node *vtg_np;
	struct sti_compositor *compo;
	struct resource *res;

	compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);
	if (!compo) {
		DRM_ERROR("Failed to allocate compositor context\n");
		return -ENOMEM;
	}
	compo->dev = dev;
	compo->vtg_vblank_nb.notifier_call = sti_crtc_vblank_cb;

	/* populate data structure depending on compatibility */
	BUG_ON(!of_match_node(compositor_of_match, np)->data);

	memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,
	       sizeof(struct sti_compositor_data));

	/* Get Memory ressources */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res == NULL) {
		DRM_ERROR("Get memory resource failed\n");
		return -ENXIO;
	}
	compo->regs = devm_ioremap(dev, res->start, resource_size(res));
	if (compo->regs == NULL) {
		DRM_ERROR("Register mapping failed\n");
		return -ENXIO;
	}

	/* Get clock resources */
	compo->clk_compo_main = devm_clk_get(dev, "compo_main");
	if (IS_ERR(compo->clk_compo_main)) {
		DRM_ERROR("Cannot get compo_main clock\n");
		return PTR_ERR(compo->clk_compo_main);
	}

	compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");
	if (IS_ERR(compo->clk_compo_aux)) {
		DRM_ERROR("Cannot get compo_aux clock\n");
		return PTR_ERR(compo->clk_compo_aux);
	}

	compo->clk_pix_main = devm_clk_get(dev, "pix_main");
	if (IS_ERR(compo->clk_pix_main)) {
		DRM_ERROR("Cannot get pix_main clock\n");
		return PTR_ERR(compo->clk_pix_main);
	}

	compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");
	if (IS_ERR(compo->clk_pix_aux)) {
		DRM_ERROR("Cannot get pix_aux clock\n");
		return PTR_ERR(compo->clk_pix_aux);
	}

	/* Get reset resources */
	compo->rst_main = devm_reset_control_get_shared(dev, "compo-main");
	/* Take compo main out of reset */
	if (!IS_ERR(compo->rst_main))
		reset_control_deassert(compo->rst_main);

	compo->rst_aux = devm_reset_control_get_shared(dev, "compo-aux");
	/* Take compo aux out of reset */
	if (!IS_ERR(compo->rst_aux))
		reset_control_deassert(compo->rst_aux);

	vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
	if (vtg_np)
		compo->vtg_main = of_vtg_find(vtg_np);
	of_node_put(vtg_np);

	vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);
	if (vtg_np)
		compo->vtg_aux = of_vtg_find(vtg_np);
	of_node_put(vtg_np);

	platform_set_drvdata(pdev, compo);

	return component_add(&pdev->dev, &sti_compositor_ops);
}

static int sti_compositor_remove(struct platform_device *pdev)
{
	component_del(&pdev->dev, &sti_compositor_ops);
	return 0;
}

struct platform_driver sti_compositor_driver = {
	.driver = {
		.name = "sti-compositor",
		.of_match_table = compositor_of_match,
	},
	.probe = sti_compositor_probe,
	.remove = sti_compositor_remove,
};

MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
d219673d BG	1	/*
	2	* Copyright (C) STMicroelectronics SA 2014
	3	* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
	4	* Fabien Dessenne <fabien.dessenne@st.com>
	5	* for STMicroelectronics.
	6	* License terms: GNU General Public License (GPL), version 2
	7	*/
	8
	9	#include <linux/component.h>
	10	#include <linux/module.h>
	11	#include <linux/platform_device.h>
	12	#include <linux/reset.h>
	13
	14	#include <drm/drmP.h>
	15
	16	#include "sti_compositor.h"
9e1f05b2	17	#include "sti_crtc.h"
871bcdfe	18	#include "sti_cursor.h"
9e1f05b2	19	#include "sti_drv.h"
d219673d	20	#include "sti_gdp.h"
9e1f05b2	21	#include "sti_plane.h"
871bcdfe	22	#include "sti_vid.h"
d219673d BG	23	#include "sti_vtg.h"
	24
	25	/*
	26	* stiH407 compositor properties
	27	*/
	28	struct sti_compositor_data stih407_compositor_data = {
96006a77	29	.nb_subdev = 8,
d219673d	30	.subdev_desc = {
96006a77	31	{STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},
d219673d BG	32	{STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
	33	{STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
	34	{STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},
	35	{STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},
871bcdfe	36	{STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700},
5e03abc5 BG	37	{STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},
5e03abc5 BG	38	{STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},
d219673d BG	39	},
	40	};
	41
	42	/*
	43	* stiH416 compositor properties
	44	* Note:
	45	* on stih416 MIXER_AUX has a different base address from MIXER_MAIN
	46	* Moreover, GDPx is different for Main and Aux Mixer. So this subdev map does
	47	* not fit for stiH416 if we want to enable the MIXER_AUX.
	48	*/
	49	struct sti_compositor_data stih416_compositor_data = {
	50	.nb_subdev = 3,
	51	.subdev_desc = {
	52	{STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
	53	{STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
	54	{STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00}
	55	},
	56	};
	57
83af0a48 BG	58	int sti_compositor_debufs_init(struct sti_compositor *compo,
	59	struct drm_minor *minor)
	60	{
	61	int ret = 0, i;
	62
	63	for (i = 0; compo->vid[i]; i++) {
	64	ret = vid_debugfs_init(compo->vid[i], minor);
	65	if (ret)
	66	return ret;
	67	}
	68
	69	for (i = 0; compo->mixer[i]; i++) {
	70	ret = sti_mixer_debugfs_init(compo->mixer[i], minor);
	71	if (ret)
	72	return ret;
	73	}
	74
	75	return 0;
	76	}
	77
871bcdfe VA	78	static int sti_compositor_bind(struct device *dev,
	79	struct device *master,
	80	void *data)
d219673d	81	{
871bcdfe VA	82	struct sti_compositor *compo = dev_get_drvdata(dev);
871bcdfe VA	83	struct drm_device *drm_dev = data;
29d1dc62	84	unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0;
9e1f05b2	85	struct sti_private *dev_priv = drm_dev->dev_private;
871bcdfe VA	86	struct drm_plane *cursor = NULL;
	87	struct drm_plane *primary = NULL;
	88	struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc;
	89	unsigned int array_size = compo->data.nb_subdev;
	90
871bcdfe VA	91	dev_priv->compo = compo;
	92
	93	/* Register mixer subdev and video subdev first */
d219673d BG	94	for (i = 0; i < array_size; i++) {
d219673d BG	95	switch (desc[i].type) {
871bcdfe VA	96	case STI_VID_SUBDEV:
871bcdfe VA	97	compo->vid[vid_id++] =
90dffef5	98	sti_vid_create(compo->dev, drm_dev, desc[i].id,
871bcdfe VA	99	compo->regs + desc[i].offset);
871bcdfe VA	100	break;
d219673d BG	101	case STI_MIXER_MAIN_SUBDEV:
	102	case STI_MIXER_AUX_SUBDEV:
	103	compo->mixer[mixer_id++] =
a5f81078	104	sti_mixer_create(compo->dev, drm_dev, desc[i].id,
d219673d BG	105	compo->regs + desc[i].offset);
	106	break;
	107	case STI_GPD_SUBDEV:
96006a77	108	case STI_CURSOR_SUBDEV:
871bcdfe	109	/* Nothing to do, wait for the second round */
d219673d	110	break;
d219673d BG	111	default:
	112	DRM_ERROR("Unknow subdev compoment type\n");
	113	return 1;
	114	}
d219673d	115	}
d219673d	116
871bcdfe VA	117	/* Register the other subdevs, create crtc and planes */
	118	for (i = 0; i < array_size; i++) {
	119	enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;
9bbf86fe	120
871bcdfe VA	121	if (crtc_id < mixer_id)
871bcdfe VA	122	plane_type = DRM_PLANE_TYPE_PRIMARY;
9bbf86fe	123
871bcdfe VA	124	switch (desc[i].type) {
	125	case STI_MIXER_MAIN_SUBDEV:
	126	case STI_MIXER_AUX_SUBDEV:
	127	case STI_VID_SUBDEV:
	128	/* Nothing to do, already done at the first round */
	129	break;
	130	case STI_CURSOR_SUBDEV:
29d1dc62 VA	131	cursor = sti_cursor_create(drm_dev, compo->dev,
	132	desc[i].id,
	133	compo->regs + desc[i].offset,
	134	1);
	135	if (!cursor) {
871bcdfe	136	DRM_ERROR("Can't create CURSOR plane\n");
9bbf86fe	137	break;
871bcdfe	138	}
871bcdfe VA	139	break;
871bcdfe VA	140	case STI_GPD_SUBDEV:
29d1dc62 VA	141	primary = sti_gdp_create(drm_dev, compo->dev,
	142	desc[i].id,
	143	compo->regs + desc[i].offset,
	144	(1 << mixer_id) - 1,
	145	plane_type);
	146	if (!primary) {
871bcdfe	147	DRM_ERROR("Can't create GDP plane\n");
8bb652eb	148	break;
9bbf86fe	149	}
871bcdfe VA	150	break;
	151	default:
	152	DRM_ERROR("Unknown subdev compoment type\n");
	153	return 1;
	154	}
9bbf86fe	155
871bcdfe VA	156	/* The first planes are reserved for primary planes*/
871bcdfe VA	157	if (crtc_id < mixer_id && primary) {
9e1f05b2 VA	158	sti_crtc_init(drm_dev, compo->mixer[crtc_id],
9e1f05b2 VA	159	primary, cursor);
871bcdfe VA	160	crtc_id++;
	161	cursor = NULL;
	162	primary = NULL;
9bbf86fe BG	163	}
9bbf86fe BG	164	}
d219673d	165
871bcdfe	166	drm_vblank_init(drm_dev, crtc_id);
d219673d BG	167	/* Allow usage of vblank without having to call drm_irq_install */
	168	drm_dev->irq_enabled = 1;
	169
d219673d BG	170	return 0;
	171	}
	172
	173	static void sti_compositor_unbind(struct device dev, struct device master,
	174	void *data)
	175	{
	176	/* do nothing */
	177	}
	178
	179	static const struct component_ops sti_compositor_ops = {
	180	.bind = sti_compositor_bind,
	181	.unbind = sti_compositor_unbind,
	182	};
	183
	184	static const struct of_device_id compositor_of_match[] = {
	185	{
	186	.compatible = "st,stih416-compositor",
	187	.data = &stih416_compositor_data,
	188	}, {
	189	.compatible = "st,stih407-compositor",
	190	.data = &stih407_compositor_data,
	191	}, {
	192	/* end node */
	193	}
	194	};
	195	MODULE_DEVICE_TABLE(of, compositor_of_match);
	196
	197	static int sti_compositor_probe(struct platform_device *pdev)
	198	{
	199	struct device *dev = &pdev->dev;
	200	struct device_node *np = dev->of_node;
	201	struct device_node *vtg_np;
	202	struct sti_compositor *compo;
	203	struct resource *res;
d219673d BG	204
	205	compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);
	206	if (!compo) {
	207	DRM_ERROR("Failed to allocate compositor context\n");
	208	return -ENOMEM;
	209	}
	210	compo->dev = dev;
9e1f05b2	211	compo->vtg_vblank_nb.notifier_call = sti_crtc_vblank_cb;
d219673d BG	212
	213	/* populate data structure depending on compatibility */
	214	BUG_ON(!of_match_node(compositor_of_match, np)->data);
	215
	216	memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,
	217	sizeof(struct sti_compositor_data));
	218
	219	/* Get Memory ressources */
	220	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	221	if (res == NULL) {
	222	DRM_ERROR("Get memory resource failed\n");
	223	return -ENXIO;
	224	}
	225	compo->regs = devm_ioremap(dev, res->start, resource_size(res));
	226	if (compo->regs == NULL) {
	227	DRM_ERROR("Register mapping failed\n");
	228	return -ENXIO;
	229	}
	230
	231	/* Get clock resources */
	232	compo->clk_compo_main = devm_clk_get(dev, "compo_main");
	233	if (IS_ERR(compo->clk_compo_main)) {
	234	DRM_ERROR("Cannot get compo_main clock\n");
	235	return PTR_ERR(compo->clk_compo_main);
	236	}
	237
	238	compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");
	239	if (IS_ERR(compo->clk_compo_aux)) {
	240	DRM_ERROR("Cannot get compo_aux clock\n");
	241	return PTR_ERR(compo->clk_compo_aux);
	242	}
	243
	244	compo->clk_pix_main = devm_clk_get(dev, "pix_main");
	245	if (IS_ERR(compo->clk_pix_main)) {
	246	DRM_ERROR("Cannot get pix_main clock\n");
	247	return PTR_ERR(compo->clk_pix_main);
	248	}
	249
	250	compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");
	251	if (IS_ERR(compo->clk_pix_aux)) {
	252	DRM_ERROR("Cannot get pix_aux clock\n");
	253	return PTR_ERR(compo->clk_pix_aux);
	254	}
	255
	256	/* Get reset resources */
c084c8da	257	compo->rst_main = devm_reset_control_get_shared(dev, "compo-main");
d219673d BG	258	/* Take compo main out of reset */
	259	if (!IS_ERR(compo->rst_main))
	260	reset_control_deassert(compo->rst_main);
	261
c084c8da	262	compo->rst_aux = devm_reset_control_get_shared(dev, "compo-aux");
d219673d BG	263	/* Take compo aux out of reset */
	264	if (!IS_ERR(compo->rst_aux))
	265	reset_control_deassert(compo->rst_aux);
	266
	267	vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
	268	if (vtg_np)
	269	compo->vtg_main = of_vtg_find(vtg_np);
9897f79b	270	of_node_put(vtg_np);
d219673d BG	271
	272	vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);
	273	if (vtg_np)
	274	compo->vtg_aux = of_vtg_find(vtg_np);
9897f79b	275	of_node_put(vtg_np);
d219673d	276
d219673d BG	277	platform_set_drvdata(pdev, compo);
	278
	279	return component_add(&pdev->dev, &sti_compositor_ops);
	280	}
	281
	282	static int sti_compositor_remove(struct platform_device *pdev)
	283	{
	284	component_del(&pdev->dev, &sti_compositor_ops);
	285	return 0;
	286	}
	287
dcec16ef	288	struct platform_driver sti_compositor_driver = {
d219673d BG	289	.driver = {
d219673d BG	290	.name = "sti-compositor",
d219673d BG	291	.of_match_table = compositor_of_match,
	292	},
	293	.probe = sti_compositor_probe,
	294	.remove = sti_compositor_remove,
	295	};
	296
d219673d BG	297	MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
	298	MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
	299	MODULE_LICENSE("GPL");