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

/*
 * Copyright (C) STMicroelectronics SA 2014
 * Authors: Vincent Abriou <vincent.abriou@st.com>
 *          Fabien Dessenne <fabien.dessenne@st.com>
 *          for STMicroelectronics.
 * License terms:  GNU General Public License (GPL), version 2
 */

#include <drm/drm_atomic.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>

#include "sti_compositor.h"
#include "sti_cursor.h"
#include "sti_plane.h"
#include "sti_vtg.h"

/* Registers */
#define CUR_CTL             0x00
#define CUR_VPO             0x0C
#define CUR_PML             0x14
#define CUR_PMP             0x18
#define CUR_SIZE            0x1C
#define CUR_CML             0x20
#define CUR_AWS             0x28
#define CUR_AWE             0x2C

#define CUR_CTL_CLUT_UPDATE BIT(1)

#define STI_CURS_MIN_SIZE   1
#define STI_CURS_MAX_SIZE   128

/*
 * pixmap dma buffer stucture
 *
 * @paddr:  physical address
 * @size:   buffer size
 * @base:   virtual address
 */
struct dma_pixmap {
	dma_addr_t paddr;
	size_t size;
	void *base;
};

/**
 * STI Cursor structure
 *
 * @sti_plane:    sti_plane structure
 * @dev:          driver device
 * @regs:         cursor registers
 * @width:        cursor width
 * @height:       cursor height
 * @clut:         color look up table
 * @clut_paddr:   color look up table physical address
 * @pixmap:       pixmap dma buffer (clut8-format cursor)
 */
struct sti_cursor {
	struct sti_plane plane;
	struct device *dev;
	void __iomem *regs;
	unsigned int width;
	unsigned int height;
	unsigned short *clut;
	dma_addr_t clut_paddr;
	struct dma_pixmap pixmap;
};

static const uint32_t cursor_supported_formats[] = {
	DRM_FORMAT_ARGB8888,
};

#define to_sti_cursor(x) container_of(x, struct sti_cursor, plane)

#define DBGFS_DUMP(reg) seq_printf(s, "\n  %-25s 0x%08X", #reg, \
				   readl(cursor->regs + reg))

static void cursor_dbg_vpo(struct seq_file *s, u32 val)
{
	seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
}

static void cursor_dbg_size(struct seq_file *s, u32 val)
{
	seq_printf(s, "\t%d x %d", val & 0x07FF, (val >> 16) & 0x07FF);
}

static void cursor_dbg_pml(struct seq_file *s,
			   struct sti_cursor *cursor, u32 val)
{
	if (cursor->pixmap.paddr == val)
		seq_printf(s, "\tVirt @: %p", cursor->pixmap.base);
}

static void cursor_dbg_cml(struct seq_file *s,
			   struct sti_cursor *cursor, u32 val)
{
	if (cursor->clut_paddr == val)
		seq_printf(s, "\tVirt @: %p", cursor->clut);
}

static int cursor_dbg_show(struct seq_file *s, void *data)
{
	struct drm_info_node *node = s->private;
	struct sti_cursor *cursor = (struct sti_cursor *)node->info_ent->data;
	struct drm_device *dev = node->minor->dev;
	int ret;

	ret = mutex_lock_interruptible(&dev->struct_mutex);
	if (ret)
		return ret;

	seq_printf(s, "%s: (vaddr = 0x%p)",
		   sti_plane_to_str(&cursor->plane), cursor->regs);

	DBGFS_DUMP(CUR_CTL);
	DBGFS_DUMP(CUR_VPO);
	cursor_dbg_vpo(s, readl(cursor->regs + CUR_VPO));
	DBGFS_DUMP(CUR_PML);
	cursor_dbg_pml(s, cursor, readl(cursor->regs + CUR_PML));
	DBGFS_DUMP(CUR_PMP);
	DBGFS_DUMP(CUR_SIZE);
	cursor_dbg_size(s, readl(cursor->regs + CUR_SIZE));
	DBGFS_DUMP(CUR_CML);
	cursor_dbg_cml(s, cursor, readl(cursor->regs + CUR_CML));
	DBGFS_DUMP(CUR_AWS);
	DBGFS_DUMP(CUR_AWE);
	seq_puts(s, "\n");

	mutex_unlock(&dev->struct_mutex);
	return 0;
}

static struct drm_info_list cursor_debugfs_files[] = {
	{ "cursor", cursor_dbg_show, 0, NULL },
};

static int cursor_debugfs_init(struct sti_cursor *cursor,
			       struct drm_minor *minor)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(cursor_debugfs_files); i++)
		cursor_debugfs_files[i].data = cursor;

	return drm_debugfs_create_files(cursor_debugfs_files,
					ARRAY_SIZE(cursor_debugfs_files),
					minor->debugfs_root, minor);
}

static void sti_cursor_argb8888_to_clut8(struct sti_cursor *cursor, u32 *src)
{
	u8  *dst = cursor->pixmap.base;
	unsigned int i, j;
	u32 a, r, g, b;

	for (i = 0; i < cursor->height; i++) {
		for (j = 0; j < cursor->width; j++) {
			/* Pick the 2 higher bits of each component */
			a = (*src >> 30) & 3;
			r = (*src >> 22) & 3;
			g = (*src >> 14) & 3;
			b = (*src >> 6) & 3;
			*dst = a << 6 | r << 4 | g << 2 | b;
			src++;
			dst++;
		}
	}
}

static void sti_cursor_init(struct sti_cursor *cursor)
{
	unsigned short *base = cursor->clut;
	unsigned int a, r, g, b;

	/* Assign CLUT values, ARGB444 format */
	for (a = 0; a < 4; a++)
		for (r = 0; r < 4; r++)
			for (g = 0; g < 4; g++)
				for (b = 0; b < 4; b++)
					*base++ = (a * 5) << 12 |
						  (r * 5) << 8 |
						  (g * 5) << 4 |
						  (b * 5);
}

static int sti_cursor_atomic_check(struct drm_plane *drm_plane,
				   struct drm_plane_state *state)
{
	struct sti_plane *plane = to_sti_plane(drm_plane);
	struct sti_cursor *cursor = to_sti_cursor(plane);
	struct drm_crtc *crtc = state->crtc;
	struct drm_framebuffer *fb = state->fb;
	struct drm_crtc_state *crtc_state;
	struct drm_display_mode *mode;
	int dst_x, dst_y, dst_w, dst_h;
	int src_w, src_h;

	/* no need for further checks if the plane is being disabled */
	if (!crtc || !fb)
		return 0;

	crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
	mode = &crtc_state->mode;
	dst_x = state->crtc_x;
	dst_y = state->crtc_y;
	dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);
	dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);
	/* src_x are in 16.16 format */
	src_w = state->src_w >> 16;
	src_h = state->src_h >> 16;

	if (src_w < STI_CURS_MIN_SIZE ||
	    src_h < STI_CURS_MIN_SIZE ||
	    src_w > STI_CURS_MAX_SIZE ||
	    src_h > STI_CURS_MAX_SIZE) {
		DRM_ERROR("Invalid cursor size (%dx%d)\n",
				src_w, src_h);
		return -EINVAL;
	}

	/* If the cursor size has changed, re-allocated the pixmap */
	if (!cursor->pixmap.base ||
	    (cursor->width != src_w) ||
	    (cursor->height != src_h)) {
		cursor->width = src_w;
		cursor->height = src_h;

		if (cursor->pixmap.base)
			dma_free_wc(cursor->dev, cursor->pixmap.size,
				    cursor->pixmap.base, cursor->pixmap.paddr);

		cursor->pixmap.size = cursor->width * cursor->height;

		cursor->pixmap.base = dma_alloc_wc(cursor->dev,
						   cursor->pixmap.size,
						   &cursor->pixmap.paddr,
						   GFP_KERNEL | GFP_DMA);
		if (!cursor->pixmap.base) {
			DRM_ERROR("Failed to allocate memory for pixmap\n");
			return -EINVAL;
		}
	}

	if (!drm_fb_cma_get_gem_obj(fb, 0)) {
		DRM_ERROR("Can't get CMA GEM object for fb\n");
		return -EINVAL;
	}

	DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
		      crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)),
		      drm_plane->base.id, sti_plane_to_str(plane));
	DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", dst_w, dst_h, dst_x, dst_y);

	return 0;
}

static void sti_cursor_atomic_update(struct drm_plane *drm_plane,
				     struct drm_plane_state *oldstate)
{
	struct drm_plane_state *state = drm_plane->state;
	struct sti_plane *plane = to_sti_plane(drm_plane);
	struct sti_cursor *cursor = to_sti_cursor(plane);
	struct drm_crtc *crtc = state->crtc;
	struct drm_framebuffer *fb = state->fb;
	struct drm_display_mode *mode;
	int dst_x, dst_y;
	struct drm_gem_cma_object *cma_obj;
	u32 y, x;
	u32 val;

	if (!crtc || !fb)
		return;

	mode = &crtc->mode;
	dst_x = state->crtc_x;
	dst_y = state->crtc_y;

	cma_obj = drm_fb_cma_get_gem_obj(fb, 0);

	/* Convert ARGB8888 to CLUT8 */
	sti_cursor_argb8888_to_clut8(cursor, (u32 *)cma_obj->vaddr);

	/* AWS and AWE depend on the mode */
	y = sti_vtg_get_line_number(*mode, 0);
	x = sti_vtg_get_pixel_number(*mode, 0);
	val = y << 16 | x;
	writel(val, cursor->regs + CUR_AWS);
	y = sti_vtg_get_line_number(*mode, mode->vdisplay - 1);
	x = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1);
	val = y << 16 | x;
	writel(val, cursor->regs + CUR_AWE);

	/* Set memory location, size, and position */
	writel(cursor->pixmap.paddr, cursor->regs + CUR_PML);
	writel(cursor->width, cursor->regs + CUR_PMP);
	writel(cursor->height << 16 | cursor->width, cursor->regs + CUR_SIZE);

	y = sti_vtg_get_line_number(*mode, dst_y);
	x = sti_vtg_get_pixel_number(*mode, dst_x);
	writel((y << 16) | x, cursor->regs + CUR_VPO);

	/* Set and fetch CLUT */
	writel(cursor->clut_paddr, cursor->regs + CUR_CML);
	writel(CUR_CTL_CLUT_UPDATE, cursor->regs + CUR_CTL);

	sti_plane_update_fps(plane, true, false);

	plane->status = STI_PLANE_UPDATED;
}

static void sti_cursor_atomic_disable(struct drm_plane *drm_plane,
				      struct drm_plane_state *oldstate)
{
	struct sti_plane *plane = to_sti_plane(drm_plane);

	if (!drm_plane->crtc) {
		DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
				 drm_plane->base.id);
		return;
	}

	DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
			 drm_plane->crtc->base.id,
			 sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
			 drm_plane->base.id, sti_plane_to_str(plane));

	plane->status = STI_PLANE_DISABLING;
}

static const struct drm_plane_helper_funcs sti_cursor_helpers_funcs = {
	.atomic_check = sti_cursor_atomic_check,
	.atomic_update = sti_cursor_atomic_update,
	.atomic_disable = sti_cursor_atomic_disable,
};

struct drm_plane *sti_cursor_create(struct drm_device *drm_dev,
				    struct device *dev, int desc,
				    void __iomem *baseaddr,
				    unsigned int possible_crtcs)
{
	struct sti_cursor *cursor;
	size_t size;
	int res;

	cursor = devm_kzalloc(dev, sizeof(*cursor), GFP_KERNEL);
	if (!cursor) {
		DRM_ERROR("Failed to allocate memory for cursor\n");
		return NULL;
	}

	/* Allocate clut buffer */
	size = 0x100 * sizeof(unsigned short);
	cursor->clut = dma_alloc_wc(dev, size, &cursor->clut_paddr,
				    GFP_KERNEL | GFP_DMA);

	if (!cursor->clut) {
		DRM_ERROR("Failed to allocate memory for cursor clut\n");
		goto err_clut;
	}

	cursor->dev = dev;
	cursor->regs = baseaddr;
	cursor->plane.desc = desc;
	cursor->plane.status = STI_PLANE_DISABLED;

	sti_cursor_init(cursor);

	res = drm_universal_plane_init(drm_dev, &cursor->plane.drm_plane,
				       possible_crtcs,
				       &sti_plane_helpers_funcs,
				       cursor_supported_formats,
				       ARRAY_SIZE(cursor_supported_formats),
				       DRM_PLANE_TYPE_CURSOR, NULL);
	if (res) {
		DRM_ERROR("Failed to initialize universal plane\n");
		goto err_plane;
	}

	drm_plane_helper_add(&cursor->plane.drm_plane,
			     &sti_cursor_helpers_funcs);

	sti_plane_init_property(&cursor->plane, DRM_PLANE_TYPE_CURSOR);

	if (cursor_debugfs_init(cursor, drm_dev->primary))
		DRM_ERROR("CURSOR debugfs setup failed\n");

	return &cursor->plane.drm_plane;

err_plane:
	dma_free_wc(dev, size, cursor->clut, cursor->clut_paddr);
err_clut:
	devm_kfree(dev, cursor);
	return NULL;
}
Commit	Line	Data
96006a77 BG	1	/*
	2	* Copyright (C) STMicroelectronics SA 2014
	3	* Authors: Vincent Abriou <vincent.abriou@st.com>
	4	* Fabien Dessenne <fabien.dessenne@st.com>
	5	* for STMicroelectronics.
	6	* License terms: GNU General Public License (GPL), version 2
	7	*/
96006a77	8
dd86dc2f	9	#include <drm/drm_atomic.h>
29d1dc62 VA	10	#include <drm/drm_fb_cma_helper.h>
29d1dc62 VA	11	#include <drm/drm_gem_cma_helper.h>
29d1dc62 VA	12
29d1dc62 VA	13	#include "sti_compositor.h"
96006a77	14	#include "sti_cursor.h"
9e1f05b2	15	#include "sti_plane.h"
96006a77 BG	16	#include "sti_vtg.h"
	17
	18	/* Registers */
	19	#define CUR_CTL 0x00
	20	#define CUR_VPO 0x0C
	21	#define CUR_PML 0x14
	22	#define CUR_PMP 0x18
	23	#define CUR_SIZE 0x1C
	24	#define CUR_CML 0x20
	25	#define CUR_AWS 0x28
	26	#define CUR_AWE 0x2C
	27
	28	#define CUR_CTL_CLUT_UPDATE BIT(1)
	29
	30	#define STI_CURS_MIN_SIZE 1
	31	#define STI_CURS_MAX_SIZE 128
	32
	33	/*
	34	* pixmap dma buffer stucture
	35	*
	36	* @paddr: physical address
	37	* @size: buffer size
	38	* @base: virtual address
	39	*/
	40	struct dma_pixmap {
	41	dma_addr_t paddr;
	42	size_t size;
	43	void *base;
	44	};
	45
	46	/**
	47	* STI Cursor structure
	48	*
29d1dc62 VA	49	* @sti_plane: sti_plane structure
	50	* @dev: driver device
	51	* @regs: cursor registers
	52	* @width: cursor width
	53	* @height: cursor height
	54	* @clut: color look up table
	55	* @clut_paddr: color look up table physical address
	56	* @pixmap: pixmap dma buffer (clut8-format cursor)
96006a77 BG	57	*/
96006a77 BG	58	struct sti_cursor {
871bcdfe VA	59	struct sti_plane plane;
	60	struct device *dev;
	61	void __iomem *regs;
96006a77 BG	62	unsigned int width;
	63	unsigned int height;
	64	unsigned short *clut;
	65	dma_addr_t clut_paddr;
	66	struct dma_pixmap pixmap;
	67	};
	68
	69	static const uint32_t cursor_supported_formats[] = {
	70	DRM_FORMAT_ARGB8888,
	71	};
	72
871bcdfe	73	#define to_sti_cursor(x) container_of(x, struct sti_cursor, plane)
96006a77	74
f46f3beb VA	75	#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
	76	readl(cursor->regs + reg))
	77
	78	static void cursor_dbg_vpo(struct seq_file *s, u32 val)
	79	{
	80	seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
	81	}
	82
	83	static void cursor_dbg_size(struct seq_file *s, u32 val)
	84	{
	85	seq_printf(s, "\t%d x %d", val & 0x07FF, (val >> 16) & 0x07FF);
	86	}
	87
	88	static void cursor_dbg_pml(struct seq_file *s,
	89	struct sti_cursor *cursor, u32 val)
	90	{
	91	if (cursor->pixmap.paddr == val)
	92	seq_printf(s, "\tVirt @: %p", cursor->pixmap.base);
	93	}
	94
	95	static void cursor_dbg_cml(struct seq_file *s,
	96	struct sti_cursor *cursor, u32 val)
	97	{
	98	if (cursor->clut_paddr == val)
	99	seq_printf(s, "\tVirt @: %p", cursor->clut);
	100	}
	101
	102	static int cursor_dbg_show(struct seq_file s, void data)
	103	{
	104	struct drm_info_node *node = s->private;
	105	struct sti_cursor cursor = (struct sti_cursor )node->info_ent->data;
	106	struct drm_device *dev = node->minor->dev;
	107	int ret;
	108
	109	ret = mutex_lock_interruptible(&dev->struct_mutex);
	110	if (ret)
	111	return ret;
	112
	113	seq_printf(s, "%s: (vaddr = 0x%p)",
	114	sti_plane_to_str(&cursor->plane), cursor->regs);
	115
	116	DBGFS_DUMP(CUR_CTL);
	117	DBGFS_DUMP(CUR_VPO);
	118	cursor_dbg_vpo(s, readl(cursor->regs + CUR_VPO));
	119	DBGFS_DUMP(CUR_PML);
	120	cursor_dbg_pml(s, cursor, readl(cursor->regs + CUR_PML));
	121	DBGFS_DUMP(CUR_PMP);
	122	DBGFS_DUMP(CUR_SIZE);
	123	cursor_dbg_size(s, readl(cursor->regs + CUR_SIZE));
	124	DBGFS_DUMP(CUR_CML);
	125	cursor_dbg_cml(s, cursor, readl(cursor->regs + CUR_CML));
	126	DBGFS_DUMP(CUR_AWS);
	127	DBGFS_DUMP(CUR_AWE);
	128	seq_puts(s, "\n");
	129
	130	mutex_unlock(&dev->struct_mutex);
	131	return 0;
	132	}
	133
	134	static struct drm_info_list cursor_debugfs_files[] = {
	135	{ "cursor", cursor_dbg_show, 0, NULL },
	136	};
	137
	138	static int cursor_debugfs_init(struct sti_cursor *cursor,
139	struct drm_minor *minor)
140	{
141	unsigned int i;
142
143	for (i = 0; i < ARRAY_SIZE(cursor_debugfs_files); i++)
144	cursor_debugfs_files[i].data = cursor;
145
146	return drm_debugfs_create_files(cursor_debugfs_files,
147	ARRAY_SIZE(cursor_debugfs_files),
148	minor->debugfs_root, minor);
149	}
150
29d1dc62	151	static void sti_cursor_argb8888_to_clut8(struct sti_cursor cursor, u32 src)
96006a77	152	{
96006a77 BG	153	u8 *dst = cursor->pixmap.base;
	154	unsigned int i, j;
	155	u32 a, r, g, b;
	156
	157	for (i = 0; i < cursor->height; i++) {
	158	for (j = 0; j < cursor->width; j++) {
	159	/* Pick the 2 higher bits of each component */
	160	a = (*src >> 30) & 3;
	161	r = (*src >> 22) & 3;
	162	g = (*src >> 14) & 3;
	163	b = (*src >> 6) & 3;
	164	*dst = a << 6 \| r << 4 \| g << 2 \| b;
	165	src++;
	166	dst++;
	167	}
	168	}
	169	}
	170
29d1dc62 VA	171	static void sti_cursor_init(struct sti_cursor *cursor)
	172	{
	173	unsigned short *base = cursor->clut;
	174	unsigned int a, r, g, b;
	175
	176	/* Assign CLUT values, ARGB444 format */
	177	for (a = 0; a < 4; a++)
	178	for (r = 0; r < 4; r++)
	179	for (g = 0; g < 4; g++)
	180	for (b = 0; b < 4; b++)
	181	base++ = (a 5) << 12 \|
	182	(r * 5) << 8 \|
	183	(g * 5) << 4 \|
	184	(b * 5);
	185	}
	186
dd86dc2f VA	187	static int sti_cursor_atomic_check(struct drm_plane *drm_plane,
dd86dc2f VA	188	struct drm_plane_state *state)
96006a77	189	{
29d1dc62	190	struct sti_plane *plane = to_sti_plane(drm_plane);
871bcdfe	191	struct sti_cursor *cursor = to_sti_cursor(plane);
29d1dc62	192	struct drm_crtc *crtc = state->crtc;
29d1dc62	193	struct drm_framebuffer *fb = state->fb;
dd86dc2f VA	194	struct drm_crtc_state *crtc_state;
	195	struct drm_display_mode *mode;
	196	int dst_x, dst_y, dst_w, dst_h;
	197	int src_w, src_h;
	198
	199	/* no need for further checks if the plane is being disabled */
	200	if (!crtc \|\| !fb)
	201	return 0;
	202
	203	crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
	204	mode = &crtc_state->mode;
	205	dst_x = state->crtc_x;
	206	dst_y = state->crtc_y;
	207	dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);
	208	dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);
29d1dc62	209	/* src_x are in 16.16 format */
dd86dc2f VA	210	src_w = state->src_w >> 16;
dd86dc2f VA	211	src_h = state->src_h >> 16;
96006a77	212
29d1dc62 VA	213	if (src_w < STI_CURS_MIN_SIZE \|\|
	214	src_h < STI_CURS_MIN_SIZE \|\|
	215	src_w > STI_CURS_MAX_SIZE \|\|
	216	src_h > STI_CURS_MAX_SIZE) {
96006a77	217	DRM_ERROR("Invalid cursor size (%dx%d)\n",
29d1dc62	218	src_w, src_h);
dd86dc2f	219	return -EINVAL;
96006a77 BG	220	}
	221
	222	/* If the cursor size has changed, re-allocated the pixmap */
	223	if (!cursor->pixmap.base \|\|
29d1dc62 VA	224	(cursor->width != src_w) \|\|
	225	(cursor->height != src_h)) {
	226	cursor->width = src_w;
	227	cursor->height = src_h;
96006a77 BG	228
96006a77 BG	229	if (cursor->pixmap.base)
f6e45661 LR	230	dma_free_wc(cursor->dev, cursor->pixmap.size,
f6e45661 LR	231	cursor->pixmap.base, cursor->pixmap.paddr);
96006a77 BG	232
	233	cursor->pixmap.size = cursor->width * cursor->height;
	234
f6e45661 LR	235	cursor->pixmap.base = dma_alloc_wc(cursor->dev,
	236	cursor->pixmap.size,
	237	&cursor->pixmap.paddr,
	238	GFP_KERNEL \| GFP_DMA);
96006a77 BG	239	if (!cursor->pixmap.base) {
96006a77 BG	240	DRM_ERROR("Failed to allocate memory for pixmap\n");
dd86dc2f	241	return -EINVAL;
96006a77 BG	242	}
	243	}
	244
dd86dc2f	245	if (!drm_fb_cma_get_gem_obj(fb, 0)) {
29d1dc62	246	DRM_ERROR("Can't get CMA GEM object for fb\n");
dd86dc2f	247	return -EINVAL;
29d1dc62 VA	248	}
29d1dc62 VA	249
dd86dc2f VA	250	DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
	251	crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)),
	252	drm_plane->base.id, sti_plane_to_str(plane));
	253	DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", dst_w, dst_h, dst_x, dst_y);
	254
	255	return 0;
	256	}
	257
	258	static void sti_cursor_atomic_update(struct drm_plane *drm_plane,
	259	struct drm_plane_state *oldstate)
	260	{
	261	struct drm_plane_state *state = drm_plane->state;
	262	struct sti_plane *plane = to_sti_plane(drm_plane);
	263	struct sti_cursor *cursor = to_sti_cursor(plane);
	264	struct drm_crtc *crtc = state->crtc;
	265	struct drm_framebuffer *fb = state->fb;
	266	struct drm_display_mode *mode;
	267	int dst_x, dst_y;
	268	struct drm_gem_cma_object *cma_obj;
	269	u32 y, x;
	270	u32 val;
	271
	272	if (!crtc \|\| !fb)
	273	return;
	274
	275	mode = &crtc->mode;
	276	dst_x = state->crtc_x;
	277	dst_y = state->crtc_y;
	278
	279	cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
	280
96006a77	281	/* Convert ARGB8888 to CLUT8 */
29d1dc62	282	sti_cursor_argb8888_to_clut8(cursor, (u32 *)cma_obj->vaddr);
96006a77 BG	283
	284	/* AWS and AWE depend on the mode */
	285	y = sti_vtg_get_line_number(*mode, 0);
	286	x = sti_vtg_get_pixel_number(*mode, 0);
	287	val = y << 16 \| x;
871bcdfe	288	writel(val, cursor->regs + CUR_AWS);
96006a77 BG	289	y = sti_vtg_get_line_number(*mode, mode->vdisplay - 1);
	290	x = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1);
	291	val = y << 16 \| x;
871bcdfe	292	writel(val, cursor->regs + CUR_AWE);
96006a77	293
96006a77	294	/* Set memory location, size, and position */
871bcdfe VA	295	writel(cursor->pixmap.paddr, cursor->regs + CUR_PML);
	296	writel(cursor->width, cursor->regs + CUR_PMP);
	297	writel(cursor->height << 16 \| cursor->width, cursor->regs + CUR_SIZE);
96006a77	298
29d1dc62	299	y = sti_vtg_get_line_number(*mode, dst_y);
b83a8b53	300	x = sti_vtg_get_pixel_number(*mode, dst_x);
29d1dc62	301	writel((y << 16) \| x, cursor->regs + CUR_VPO);
96006a77	302
0b9d0416 FD	303	/* Set and fetch CLUT */
	304	writel(cursor->clut_paddr, cursor->regs + CUR_CML);
	305	writel(CUR_CTL_CLUT_UPDATE, cursor->regs + CUR_CTL);
	306
bf8f9e4a VA	307	sti_plane_update_fps(plane, true, false);
bf8f9e4a VA	308
29d1dc62	309	plane->status = STI_PLANE_UPDATED;
96006a77 BG	310	}
96006a77 BG	311
29d1dc62 VA	312	static void sti_cursor_atomic_disable(struct drm_plane *drm_plane,
29d1dc62 VA	313	struct drm_plane_state *oldstate)
96006a77	314	{
29d1dc62	315	struct sti_plane *plane = to_sti_plane(drm_plane);
96006a77	316
29d1dc62 VA	317	if (!drm_plane->crtc) {
	318	DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
	319	drm_plane->base.id);
	320	return;
	321	}
96006a77	322
29d1dc62	323	DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
dd86dc2f VA	324	drm_plane->crtc->base.id,
dd86dc2f VA	325	sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
29d1dc62 VA	326	drm_plane->base.id, sti_plane_to_str(plane));
	327
	328	plane->status = STI_PLANE_DISABLING;
96006a77 BG	329	}
96006a77 BG	330
29d1dc62	331	static const struct drm_plane_helper_funcs sti_cursor_helpers_funcs = {
dd86dc2f	332	.atomic_check = sti_cursor_atomic_check,
29d1dc62 VA	333	.atomic_update = sti_cursor_atomic_update,
29d1dc62 VA	334	.atomic_disable = sti_cursor_atomic_disable,
96006a77 BG	335	};
96006a77 BG	336
29d1dc62 VA	337	struct drm_plane sti_cursor_create(struct drm_device drm_dev,
	338	struct device *dev, int desc,
	339	void __iomem *baseaddr,
	340	unsigned int possible_crtcs)
96006a77 BG	341	{
96006a77 BG	342	struct sti_cursor *cursor;
29d1dc62 VA	343	size_t size;
29d1dc62 VA	344	int res;
96006a77 BG	345
	346	cursor = devm_kzalloc(dev, sizeof(*cursor), GFP_KERNEL);
	347	if (!cursor) {
	348	DRM_ERROR("Failed to allocate memory for cursor\n");
	349	return NULL;
	350	}
	351
	352	/* Allocate clut buffer */
29d1dc62	353	size = 0x100 * sizeof(unsigned short);
f6e45661 LR	354	cursor->clut = dma_alloc_wc(dev, size, &cursor->clut_paddr,
f6e45661 LR	355	GFP_KERNEL \| GFP_DMA);
96006a77 BG	356
	357	if (!cursor->clut) {
	358	DRM_ERROR("Failed to allocate memory for cursor clut\n");
29d1dc62	359	goto err_clut;
96006a77 BG	360	}
96006a77 BG	361
871bcdfe VA	362	cursor->dev = dev;
	363	cursor->regs = baseaddr;
	364	cursor->plane.desc = desc;
29d1dc62	365	cursor->plane.status = STI_PLANE_DISABLED;
96006a77	366
871bcdfe VA	367	sti_cursor_init(cursor);
871bcdfe VA	368
29d1dc62 VA	369	res = drm_universal_plane_init(drm_dev, &cursor->plane.drm_plane,
	370	possible_crtcs,
	371	&sti_plane_helpers_funcs,
	372	cursor_supported_formats,
	373	ARRAY_SIZE(cursor_supported_formats),
b0b3b795	374	DRM_PLANE_TYPE_CURSOR, NULL);
29d1dc62 VA	375	if (res) {
	376	DRM_ERROR("Failed to initialize universal plane\n");
	377	goto err_plane;
	378	}
	379
	380	drm_plane_helper_add(&cursor->plane.drm_plane,
	381	&sti_cursor_helpers_funcs);
	382
	383	sti_plane_init_property(&cursor->plane, DRM_PLANE_TYPE_CURSOR);
	384
f46f3beb VA	385	if (cursor_debugfs_init(cursor, drm_dev->primary))
	386	DRM_ERROR("CURSOR debugfs setup failed\n");
	387
29d1dc62 VA	388	return &cursor->plane.drm_plane;
	389
	390	err_plane:
f6e45661	391	dma_free_wc(dev, size, cursor->clut, cursor->clut_paddr);
29d1dc62 VA	392	err_clut:
	393	devm_kfree(dev, cursor);
	394	return NULL;
96006a77	395	}