Linux Audio

Check our new training course

Loading...
v4.6
   1/*
   2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
   3 * Authors:
   4 * Seung-Woo Kim <sw0312.kim@samsung.com>
   5 *	Inki Dae <inki.dae@samsung.com>
   6 *	Joonyoung Shim <jy0922.shim@samsung.com>
   7 *
   8 * Based on drivers/media/video/s5p-tv/mixer_reg.c
   9 *
  10 * This program is free software; you can redistribute  it and/or modify it
  11 * under  the terms of  the GNU General  Public License as published by the
  12 * Free Software Foundation;  either version 2 of the  License, or (at your
  13 * option) any later version.
  14 *
  15 */
  16
  17#include <drm/drmP.h>
  18
  19#include "regs-mixer.h"
  20#include "regs-vp.h"
  21
  22#include <linux/kernel.h>
  23#include <linux/spinlock.h>
  24#include <linux/wait.h>
  25#include <linux/i2c.h>
  26#include <linux/platform_device.h>
  27#include <linux/interrupt.h>
  28#include <linux/irq.h>
  29#include <linux/delay.h>
  30#include <linux/pm_runtime.h>
  31#include <linux/clk.h>
  32#include <linux/regulator/consumer.h>
  33#include <linux/of.h>
 
  34#include <linux/component.h>
  35
  36#include <drm/exynos_drm.h>
  37
  38#include "exynos_drm_drv.h"
  39#include "exynos_drm_crtc.h"
  40#include "exynos_drm_fb.h"
  41#include "exynos_drm_plane.h"
  42#include "exynos_drm_iommu.h"
  43
  44#define MIXER_WIN_NR		3
  45#define VP_DEFAULT_WIN		2
  46
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  47/* The pixelformats that are natively supported by the mixer. */
  48#define MXR_FORMAT_RGB565	4
  49#define MXR_FORMAT_ARGB1555	5
  50#define MXR_FORMAT_ARGB4444	6
  51#define MXR_FORMAT_ARGB8888	7
  52
  53struct mixer_resources {
  54	int			irq;
  55	void __iomem		*mixer_regs;
  56	void __iomem		*vp_regs;
  57	spinlock_t		reg_slock;
  58	struct clk		*mixer;
  59	struct clk		*vp;
  60	struct clk		*hdmi;
  61	struct clk		*sclk_mixer;
  62	struct clk		*sclk_hdmi;
  63	struct clk		*mout_mixer;
  64};
  65
  66enum mixer_version_id {
  67	MXR_VER_0_0_0_16,
  68	MXR_VER_16_0_33_0,
  69	MXR_VER_128_0_0_184,
  70};
  71
  72enum mixer_flag_bits {
  73	MXR_BIT_POWERED,
  74	MXR_BIT_VSYNC,
 
 
 
  75};
  76
  77static const uint32_t mixer_formats[] = {
  78	DRM_FORMAT_XRGB4444,
  79	DRM_FORMAT_ARGB4444,
  80	DRM_FORMAT_XRGB1555,
  81	DRM_FORMAT_ARGB1555,
  82	DRM_FORMAT_RGB565,
  83	DRM_FORMAT_XRGB8888,
  84	DRM_FORMAT_ARGB8888,
  85};
  86
  87static const uint32_t vp_formats[] = {
  88	DRM_FORMAT_NV12,
  89	DRM_FORMAT_NV21,
  90};
  91
  92struct mixer_context {
  93	struct platform_device *pdev;
  94	struct device		*dev;
  95	struct drm_device	*drm_dev;
  96	struct exynos_drm_crtc	*crtc;
  97	struct exynos_drm_plane	planes[MIXER_WIN_NR];
  98	int			pipe;
  99	unsigned long		flags;
 100	bool			interlace;
 101	bool			vp_enabled;
 102	bool			has_sclk;
 103
 104	struct mixer_resources	mixer_res;
 
 
 
 
 
 
 
 
 
 105	enum mixer_version_id	mxr_ver;
 106	wait_queue_head_t	wait_vsync_queue;
 107	atomic_t		wait_vsync_event;
 108};
 109
 110struct mixer_drv_data {
 111	enum mixer_version_id	version;
 112	bool					is_vp_enabled;
 113	bool					has_sclk;
 114};
 115
 116static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
 117	{
 118		.zpos = 0,
 119		.type = DRM_PLANE_TYPE_PRIMARY,
 120		.pixel_formats = mixer_formats,
 121		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
 122		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
 123				EXYNOS_DRM_PLANE_CAP_ZPOS,
 124	}, {
 125		.zpos = 1,
 126		.type = DRM_PLANE_TYPE_CURSOR,
 127		.pixel_formats = mixer_formats,
 128		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
 129		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
 130				EXYNOS_DRM_PLANE_CAP_ZPOS,
 131	}, {
 132		.zpos = 2,
 133		.type = DRM_PLANE_TYPE_OVERLAY,
 134		.pixel_formats = vp_formats,
 135		.num_pixel_formats = ARRAY_SIZE(vp_formats),
 136		.capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
 137				EXYNOS_DRM_PLANE_CAP_ZPOS,
 
 138	},
 139};
 140
 141static const u8 filter_y_horiz_tap8[] = {
 142	0,	-1,	-1,	-1,	-1,	-1,	-1,	-1,
 143	-1,	-1,	-1,	-1,	-1,	0,	0,	0,
 144	0,	2,	4,	5,	6,	6,	6,	6,
 145	6,	5,	5,	4,	3,	2,	1,	1,
 146	0,	-6,	-12,	-16,	-18,	-20,	-21,	-20,
 147	-20,	-18,	-16,	-13,	-10,	-8,	-5,	-2,
 148	127,	126,	125,	121,	114,	107,	99,	89,
 149	79,	68,	57,	46,	35,	25,	16,	8,
 150};
 151
 152static const u8 filter_y_vert_tap4[] = {
 153	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
 154	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
 155	127,	126,	124,	118,	111,	102,	92,	81,
 156	70,	59,	48,	37,	27,	19,	11,	5,
 157	0,	5,	11,	19,	27,	37,	48,	59,
 158	70,	81,	92,	102,	111,	118,	124,	126,
 159	0,	0,	-1,	-1,	-2,	-3,	-4,	-5,
 160	-6,	-7,	-8,	-8,	-8,	-8,	-6,	-3,
 161};
 162
 163static const u8 filter_cr_horiz_tap4[] = {
 164	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
 165	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
 166	127,	126,	124,	118,	111,	102,	92,	81,
 167	70,	59,	48,	37,	27,	19,	11,	5,
 168};
 169
 170static inline bool is_alpha_format(unsigned int pixel_format)
 171{
 172	switch (pixel_format) {
 173	case DRM_FORMAT_ARGB8888:
 174	case DRM_FORMAT_ARGB1555:
 175	case DRM_FORMAT_ARGB4444:
 176		return true;
 177	default:
 178		return false;
 179	}
 180}
 181
 182static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
 183{
 184	return readl(res->vp_regs + reg_id);
 185}
 186
 187static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
 188				 u32 val)
 189{
 190	writel(val, res->vp_regs + reg_id);
 191}
 192
 193static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
 194				 u32 val, u32 mask)
 195{
 196	u32 old = vp_reg_read(res, reg_id);
 197
 198	val = (val & mask) | (old & ~mask);
 199	writel(val, res->vp_regs + reg_id);
 200}
 201
 202static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
 203{
 204	return readl(res->mixer_regs + reg_id);
 205}
 206
 207static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
 208				 u32 val)
 209{
 210	writel(val, res->mixer_regs + reg_id);
 211}
 212
 213static inline void mixer_reg_writemask(struct mixer_resources *res,
 214				 u32 reg_id, u32 val, u32 mask)
 215{
 216	u32 old = mixer_reg_read(res, reg_id);
 217
 218	val = (val & mask) | (old & ~mask);
 219	writel(val, res->mixer_regs + reg_id);
 220}
 221
 222static void mixer_regs_dump(struct mixer_context *ctx)
 223{
 224#define DUMPREG(reg_id) \
 225do { \
 226	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
 227		(u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
 228} while (0)
 229
 230	DUMPREG(MXR_STATUS);
 231	DUMPREG(MXR_CFG);
 232	DUMPREG(MXR_INT_EN);
 233	DUMPREG(MXR_INT_STATUS);
 234
 235	DUMPREG(MXR_LAYER_CFG);
 236	DUMPREG(MXR_VIDEO_CFG);
 237
 238	DUMPREG(MXR_GRAPHIC0_CFG);
 239	DUMPREG(MXR_GRAPHIC0_BASE);
 240	DUMPREG(MXR_GRAPHIC0_SPAN);
 241	DUMPREG(MXR_GRAPHIC0_WH);
 242	DUMPREG(MXR_GRAPHIC0_SXY);
 243	DUMPREG(MXR_GRAPHIC0_DXY);
 244
 245	DUMPREG(MXR_GRAPHIC1_CFG);
 246	DUMPREG(MXR_GRAPHIC1_BASE);
 247	DUMPREG(MXR_GRAPHIC1_SPAN);
 248	DUMPREG(MXR_GRAPHIC1_WH);
 249	DUMPREG(MXR_GRAPHIC1_SXY);
 250	DUMPREG(MXR_GRAPHIC1_DXY);
 251#undef DUMPREG
 252}
 253
 254static void vp_regs_dump(struct mixer_context *ctx)
 255{
 256#define DUMPREG(reg_id) \
 257do { \
 258	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
 259		(u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
 260} while (0)
 261
 262	DUMPREG(VP_ENABLE);
 263	DUMPREG(VP_SRESET);
 264	DUMPREG(VP_SHADOW_UPDATE);
 265	DUMPREG(VP_FIELD_ID);
 266	DUMPREG(VP_MODE);
 267	DUMPREG(VP_IMG_SIZE_Y);
 268	DUMPREG(VP_IMG_SIZE_C);
 269	DUMPREG(VP_PER_RATE_CTRL);
 270	DUMPREG(VP_TOP_Y_PTR);
 271	DUMPREG(VP_BOT_Y_PTR);
 272	DUMPREG(VP_TOP_C_PTR);
 273	DUMPREG(VP_BOT_C_PTR);
 274	DUMPREG(VP_ENDIAN_MODE);
 275	DUMPREG(VP_SRC_H_POSITION);
 276	DUMPREG(VP_SRC_V_POSITION);
 277	DUMPREG(VP_SRC_WIDTH);
 278	DUMPREG(VP_SRC_HEIGHT);
 279	DUMPREG(VP_DST_H_POSITION);
 280	DUMPREG(VP_DST_V_POSITION);
 281	DUMPREG(VP_DST_WIDTH);
 282	DUMPREG(VP_DST_HEIGHT);
 283	DUMPREG(VP_H_RATIO);
 284	DUMPREG(VP_V_RATIO);
 285
 286#undef DUMPREG
 287}
 288
 289static inline void vp_filter_set(struct mixer_resources *res,
 290		int reg_id, const u8 *data, unsigned int size)
 291{
 292	/* assure 4-byte align */
 293	BUG_ON(size & 3);
 294	for (; size; size -= 4, reg_id += 4, data += 4) {
 295		u32 val = (data[0] << 24) |  (data[1] << 16) |
 296			(data[2] << 8) | data[3];
 297		vp_reg_write(res, reg_id, val);
 298	}
 299}
 300
 301static void vp_default_filter(struct mixer_resources *res)
 302{
 303	vp_filter_set(res, VP_POLY8_Y0_LL,
 304		filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
 305	vp_filter_set(res, VP_POLY4_Y0_LL,
 306		filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
 307	vp_filter_set(res, VP_POLY4_C0_LL,
 308		filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
 309}
 310
 311static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
 312				bool alpha)
 313{
 314	struct mixer_resources *res = &ctx->mixer_res;
 315	u32 val;
 316
 317	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
 318	if (alpha) {
 319		/* blending based on pixel alpha */
 320		val |= MXR_GRP_CFG_BLEND_PRE_MUL;
 321		val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
 322	}
 323	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
 324			    val, MXR_GRP_CFG_MISC_MASK);
 325}
 326
 327static void mixer_cfg_vp_blend(struct mixer_context *ctx)
 328{
 329	struct mixer_resources *res = &ctx->mixer_res;
 330	u32 val;
 331
 332	/*
 333	 * No blending at the moment since the NV12/NV21 pixelformats don't
 334	 * have an alpha channel. However the mixer supports a global alpha
 335	 * value for a layer. Once this functionality is exposed, we can
 336	 * support blending of the video layer through this.
 337	 */
 338	val = 0;
 339	mixer_reg_write(res, MXR_VIDEO_CFG, val);
 340}
 341
 342static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
 343{
 344	struct mixer_resources *res = &ctx->mixer_res;
 345
 346	/* block update on vsync */
 347	mixer_reg_writemask(res, MXR_STATUS, enable ?
 348			MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
 349
 350	if (ctx->vp_enabled)
 351		vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
 352			VP_SHADOW_UPDATE_ENABLE : 0);
 353}
 354
 355static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
 356{
 357	struct mixer_resources *res = &ctx->mixer_res;
 358	u32 val;
 359
 360	/* choosing between interlace and progressive mode */
 361	val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
 362				MXR_CFG_SCAN_PROGRESSIVE);
 363
 364	if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
 365		/* choosing between proper HD and SD mode */
 366		if (height <= 480)
 367			val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
 368		else if (height <= 576)
 369			val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
 370		else if (height <= 720)
 371			val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
 372		else if (height <= 1080)
 373			val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
 374		else
 375			val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
 376	}
 377
 378	mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
 379}
 380
 381static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
 382{
 383	struct mixer_resources *res = &ctx->mixer_res;
 384	u32 val;
 385
 386	if (height == 480) {
 
 
 387		val = MXR_CFG_RGB601_0_255;
 388	} else if (height == 576) {
 389		val = MXR_CFG_RGB601_0_255;
 390	} else if (height == 720) {
 391		val = MXR_CFG_RGB709_16_235;
 392		mixer_reg_write(res, MXR_CM_COEFF_Y,
 393				(1 << 30) | (94 << 20) | (314 << 10) |
 394				(32 << 0));
 395		mixer_reg_write(res, MXR_CM_COEFF_CB,
 396				(972 << 20) | (851 << 10) | (225 << 0));
 397		mixer_reg_write(res, MXR_CM_COEFF_CR,
 398				(225 << 20) | (820 << 10) | (1004 << 0));
 399	} else if (height == 1080) {
 400		val = MXR_CFG_RGB709_16_235;
 401		mixer_reg_write(res, MXR_CM_COEFF_Y,
 402				(1 << 30) | (94 << 20) | (314 << 10) |
 403				(32 << 0));
 404		mixer_reg_write(res, MXR_CM_COEFF_CB,
 405				(972 << 20) | (851 << 10) | (225 << 0));
 406		mixer_reg_write(res, MXR_CM_COEFF_CR,
 407				(225 << 20) | (820 << 10) | (1004 << 0));
 408	} else {
 409		val = MXR_CFG_RGB709_16_235;
 410		mixer_reg_write(res, MXR_CM_COEFF_Y,
 411				(1 << 30) | (94 << 20) | (314 << 10) |
 412				(32 << 0));
 413		mixer_reg_write(res, MXR_CM_COEFF_CB,
 414				(972 << 20) | (851 << 10) | (225 << 0));
 415		mixer_reg_write(res, MXR_CM_COEFF_CR,
 416				(225 << 20) | (820 << 10) | (1004 << 0));
 
 
 417	}
 418
 419	mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
 420}
 421
 422static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
 423			    unsigned int priority, bool enable)
 424{
 425	struct mixer_resources *res = &ctx->mixer_res;
 426	u32 val = enable ? ~0 : 0;
 427
 428	switch (win) {
 429	case 0:
 430		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
 431		mixer_reg_writemask(res, MXR_LAYER_CFG,
 432				    MXR_LAYER_CFG_GRP0_VAL(priority),
 433				    MXR_LAYER_CFG_GRP0_MASK);
 434		break;
 435	case 1:
 436		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
 437		mixer_reg_writemask(res, MXR_LAYER_CFG,
 438				    MXR_LAYER_CFG_GRP1_VAL(priority),
 439				    MXR_LAYER_CFG_GRP1_MASK);
 
 440		break;
 441	case VP_DEFAULT_WIN:
 442		if (ctx->vp_enabled) {
 443			vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
 444			mixer_reg_writemask(res, MXR_CFG, val,
 445				MXR_CFG_VP_ENABLE);
 446			mixer_reg_writemask(res, MXR_LAYER_CFG,
 447					    MXR_LAYER_CFG_VP_VAL(priority),
 448					    MXR_LAYER_CFG_VP_MASK);
 449		}
 450		break;
 451	}
 452}
 453
 454static void mixer_run(struct mixer_context *ctx)
 455{
 456	struct mixer_resources *res = &ctx->mixer_res;
 457
 458	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
 459}
 460
 461static void mixer_stop(struct mixer_context *ctx)
 462{
 463	struct mixer_resources *res = &ctx->mixer_res;
 464	int timeout = 20;
 465
 466	mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
 467
 468	while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
 469			--timeout)
 470		usleep_range(10000, 12000);
 471}
 472
 
 
 
 
 
 
 
 
 
 473static void vp_video_buffer(struct mixer_context *ctx,
 474			    struct exynos_drm_plane *plane)
 475{
 476	struct exynos_drm_plane_state *state =
 477				to_exynos_plane_state(plane->base.state);
 478	struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
 479	struct mixer_resources *res = &ctx->mixer_res;
 480	struct drm_framebuffer *fb = state->base.fb;
 
 481	unsigned long flags;
 482	dma_addr_t luma_addr[2], chroma_addr[2];
 483	bool tiled_mode = false;
 484	bool crcb_mode = false;
 485	u32 val;
 486
 487	switch (fb->pixel_format) {
 488	case DRM_FORMAT_NV12:
 489		crcb_mode = false;
 490		break;
 491	case DRM_FORMAT_NV21:
 492		crcb_mode = true;
 493		break;
 494	default:
 495		DRM_ERROR("pixel format for vp is wrong [%d].\n",
 496				fb->pixel_format);
 497		return;
 498	}
 499
 500	luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
 501	chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
 502
 503	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 504		ctx->interlace = true;
 505		if (tiled_mode) {
 506			luma_addr[1] = luma_addr[0] + 0x40;
 507			chroma_addr[1] = chroma_addr[0] + 0x40;
 508		} else {
 509			luma_addr[1] = luma_addr[0] + fb->pitches[0];
 510			chroma_addr[1] = chroma_addr[0] + fb->pitches[0];
 511		}
 512	} else {
 513		ctx->interlace = false;
 514		luma_addr[1] = 0;
 515		chroma_addr[1] = 0;
 516	}
 517
 518	spin_lock_irqsave(&res->reg_slock, flags);
 519
 
 520	/* interlace or progressive scan mode */
 521	val = (ctx->interlace ? ~0 : 0);
 522	vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
 523
 524	/* setup format */
 525	val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
 526	val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
 527	vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
 528
 529	/* setting size of input image */
 530	vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
 531		VP_IMG_VSIZE(fb->height));
 532	/* chroma height has to reduced by 2 to avoid chroma distorions */
 533	vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) |
 534		VP_IMG_VSIZE(fb->height / 2));
 535
 536	vp_reg_write(res, VP_SRC_WIDTH, state->src.w);
 537	vp_reg_write(res, VP_SRC_HEIGHT, state->src.h);
 538	vp_reg_write(res, VP_SRC_H_POSITION,
 539			VP_SRC_H_POSITION_VAL(state->src.x));
 540	vp_reg_write(res, VP_SRC_V_POSITION, state->src.y);
 
 541
 542	vp_reg_write(res, VP_DST_WIDTH, state->crtc.w);
 543	vp_reg_write(res, VP_DST_H_POSITION, state->crtc.x);
 544	if (ctx->interlace) {
 545		vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h / 2);
 546		vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y / 2);
 547	} else {
 548		vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h);
 549		vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y);
 
 
 550	}
 551
 552	vp_reg_write(res, VP_H_RATIO, state->h_ratio);
 553	vp_reg_write(res, VP_V_RATIO, state->v_ratio);
 554
 555	vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
 556
 557	/* set buffer address to vp */
 558	vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
 559	vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
 560	vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
 561	vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
 562
 563	mixer_cfg_scan(ctx, mode->vdisplay);
 564	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
 565	mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
 566	mixer_cfg_vp_blend(ctx);
 567	mixer_run(ctx);
 568
 569	spin_unlock_irqrestore(&res->reg_slock, flags);
 570
 571	mixer_regs_dump(ctx);
 572	vp_regs_dump(ctx);
 573}
 574
 575static void mixer_layer_update(struct mixer_context *ctx)
 576{
 577	struct mixer_resources *res = &ctx->mixer_res;
 578
 579	mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
 580}
 581
 582static void mixer_graph_buffer(struct mixer_context *ctx,
 583			       struct exynos_drm_plane *plane)
 584{
 585	struct exynos_drm_plane_state *state =
 586				to_exynos_plane_state(plane->base.state);
 587	struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
 588	struct mixer_resources *res = &ctx->mixer_res;
 589	struct drm_framebuffer *fb = state->base.fb;
 
 590	unsigned long flags;
 591	unsigned int win = plane->index;
 592	unsigned int x_ratio = 0, y_ratio = 0;
 593	unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
 594	dma_addr_t dma_addr;
 595	unsigned int fmt;
 596	u32 val;
 597
 598	switch (fb->pixel_format) {
 599	case DRM_FORMAT_XRGB4444:
 600	case DRM_FORMAT_ARGB4444:
 601		fmt = MXR_FORMAT_ARGB4444;
 602		break;
 603
 604	case DRM_FORMAT_XRGB1555:
 605	case DRM_FORMAT_ARGB1555:
 606		fmt = MXR_FORMAT_ARGB1555;
 607		break;
 608
 609	case DRM_FORMAT_RGB565:
 610		fmt = MXR_FORMAT_RGB565;
 611		break;
 612
 613	case DRM_FORMAT_XRGB8888:
 614	case DRM_FORMAT_ARGB8888:
 
 615		fmt = MXR_FORMAT_ARGB8888;
 616		break;
 617
 618	default:
 619		DRM_DEBUG_KMS("pixelformat unsupported by mixer\n");
 620		return;
 621	}
 622
 623	/* ratio is already checked by common plane code */
 624	x_ratio = state->h_ratio == (1 << 15);
 625	y_ratio = state->v_ratio == (1 << 15);
 626
 627	dst_x_offset = state->crtc.x;
 628	dst_y_offset = state->crtc.y;
 629
 630	/* converting dma address base and source offset */
 631	dma_addr = exynos_drm_fb_dma_addr(fb, 0)
 632		+ (state->src.x * fb->bits_per_pixel >> 3)
 633		+ (state->src.y * fb->pitches[0]);
 634	src_x_offset = 0;
 635	src_y_offset = 0;
 636
 637	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 638		ctx->interlace = true;
 639	else
 640		ctx->interlace = false;
 641
 642	spin_lock_irqsave(&res->reg_slock, flags);
 643
 644	/* setup format */
 645	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
 646		MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
 647
 648	/* setup geometry */
 649	mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
 650			fb->pitches[0] / (fb->bits_per_pixel >> 3));
 651
 652	/* setup display size */
 653	if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
 654		win == DEFAULT_WIN) {
 655		val  = MXR_MXR_RES_HEIGHT(mode->vdisplay);
 656		val |= MXR_MXR_RES_WIDTH(mode->hdisplay);
 657		mixer_reg_write(res, MXR_RESOLUTION, val);
 658	}
 659
 660	val  = MXR_GRP_WH_WIDTH(state->src.w);
 661	val |= MXR_GRP_WH_HEIGHT(state->src.h);
 662	val |= MXR_GRP_WH_H_SCALE(x_ratio);
 663	val |= MXR_GRP_WH_V_SCALE(y_ratio);
 664	mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
 665
 666	/* setup offsets in source image */
 667	val  = MXR_GRP_SXY_SX(src_x_offset);
 668	val |= MXR_GRP_SXY_SY(src_y_offset);
 669	mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
 670
 671	/* setup offsets in display image */
 672	val  = MXR_GRP_DXY_DX(dst_x_offset);
 673	val |= MXR_GRP_DXY_DY(dst_y_offset);
 674	mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
 675
 676	/* set buffer address to mixer */
 677	mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
 678
 679	mixer_cfg_scan(ctx, mode->vdisplay);
 680	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
 681	mixer_cfg_layer(ctx, win, state->zpos + 1, true);
 682	mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->pixel_format));
 683
 684	/* layer update mandatory for mixer 16.0.33.0 */
 685	if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
 686		ctx->mxr_ver == MXR_VER_128_0_0_184)
 687		mixer_layer_update(ctx);
 688
 689	mixer_run(ctx);
 690
 691	spin_unlock_irqrestore(&res->reg_slock, flags);
 692
 693	mixer_regs_dump(ctx);
 694}
 695
 696static void vp_win_reset(struct mixer_context *ctx)
 697{
 698	struct mixer_resources *res = &ctx->mixer_res;
 699	int tries = 100;
 700
 701	vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
 702	for (tries = 100; tries; --tries) {
 703		/* waiting until VP_SRESET_PROCESSING is 0 */
 704		if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
 705			break;
 706		mdelay(10);
 707	}
 708	WARN(tries == 0, "failed to reset Video Processor\n");
 709}
 710
 711static void mixer_win_reset(struct mixer_context *ctx)
 712{
 713	struct mixer_resources *res = &ctx->mixer_res;
 714	unsigned long flags;
 715
 716	spin_lock_irqsave(&res->reg_slock, flags);
 717
 718	mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
 719
 720	/* set output in RGB888 mode */
 721	mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
 722
 723	/* 16 beat burst in DMA */
 724	mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
 725		MXR_STATUS_BURST_MASK);
 726
 727	/* reset default layer priority */
 728	mixer_reg_write(res, MXR_LAYER_CFG, 0);
 729
 730	/* setting background color */
 731	mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
 732	mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
 733	mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
 734
 735	if (ctx->vp_enabled) {
 736		/* configuration of Video Processor Registers */
 737		vp_win_reset(ctx);
 738		vp_default_filter(res);
 739	}
 740
 741	/* disable all layers */
 742	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
 743	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
 744	if (ctx->vp_enabled)
 745		mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
 
 
 
 
 746
 747	spin_unlock_irqrestore(&res->reg_slock, flags);
 748}
 749
 750static irqreturn_t mixer_irq_handler(int irq, void *arg)
 751{
 752	struct mixer_context *ctx = arg;
 753	struct mixer_resources *res = &ctx->mixer_res;
 754	u32 val, base, shadow;
 755	int win;
 756
 757	spin_lock(&res->reg_slock);
 758
 759	/* read interrupt status for handling and clearing flags for VSYNC */
 760	val = mixer_reg_read(res, MXR_INT_STATUS);
 761
 762	/* handling VSYNC */
 763	if (val & MXR_INT_STATUS_VSYNC) {
 764		/* vsync interrupt use different bit for read and clear */
 765		val |= MXR_INT_CLEAR_VSYNC;
 766		val &= ~MXR_INT_STATUS_VSYNC;
 767
 768		/* interlace scan need to check shadow register */
 769		if (ctx->interlace) {
 770			base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
 771			shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
 772			if (base != shadow)
 773				goto out;
 774
 775			base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
 776			shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
 777			if (base != shadow)
 778				goto out;
 779		}
 780
 781		drm_crtc_handle_vblank(&ctx->crtc->base);
 782		for (win = 0 ; win < MIXER_WIN_NR ; win++) {
 783			struct exynos_drm_plane *plane = &ctx->planes[win];
 784
 785			if (!plane->pending_fb)
 786				continue;
 
 
 787
 788			exynos_drm_crtc_finish_update(ctx->crtc, plane);
 
 
 
 789		}
 790
 791		/* set wait vsync event to zero and wake up queue. */
 792		if (atomic_read(&ctx->wait_vsync_event)) {
 793			atomic_set(&ctx->wait_vsync_event, 0);
 794			wake_up(&ctx->wait_vsync_queue);
 795		}
 796	}
 797
 798out:
 799	/* clear interrupts */
 800	mixer_reg_write(res, MXR_INT_STATUS, val);
 801
 802	spin_unlock(&res->reg_slock);
 803
 804	return IRQ_HANDLED;
 805}
 806
 807static int mixer_resources_init(struct mixer_context *mixer_ctx)
 808{
 809	struct device *dev = &mixer_ctx->pdev->dev;
 810	struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
 811	struct resource *res;
 812	int ret;
 813
 814	spin_lock_init(&mixer_res->reg_slock);
 815
 816	mixer_res->mixer = devm_clk_get(dev, "mixer");
 817	if (IS_ERR(mixer_res->mixer)) {
 818		dev_err(dev, "failed to get clock 'mixer'\n");
 819		return -ENODEV;
 820	}
 821
 822	mixer_res->hdmi = devm_clk_get(dev, "hdmi");
 823	if (IS_ERR(mixer_res->hdmi)) {
 824		dev_err(dev, "failed to get clock 'hdmi'\n");
 825		return PTR_ERR(mixer_res->hdmi);
 826	}
 827
 828	mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
 829	if (IS_ERR(mixer_res->sclk_hdmi)) {
 830		dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
 831		return -ENODEV;
 832	}
 833	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
 834	if (res == NULL) {
 835		dev_err(dev, "get memory resource failed.\n");
 836		return -ENXIO;
 837	}
 838
 839	mixer_res->mixer_regs = devm_ioremap(dev, res->start,
 840							resource_size(res));
 841	if (mixer_res->mixer_regs == NULL) {
 842		dev_err(dev, "register mapping failed.\n");
 843		return -ENXIO;
 844	}
 845
 846	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
 847	if (res == NULL) {
 848		dev_err(dev, "get interrupt resource failed.\n");
 849		return -ENXIO;
 850	}
 851
 852	ret = devm_request_irq(dev, res->start, mixer_irq_handler,
 853						0, "drm_mixer", mixer_ctx);
 854	if (ret) {
 855		dev_err(dev, "request interrupt failed.\n");
 856		return ret;
 857	}
 858	mixer_res->irq = res->start;
 859
 860	return 0;
 861}
 862
 863static int vp_resources_init(struct mixer_context *mixer_ctx)
 864{
 865	struct device *dev = &mixer_ctx->pdev->dev;
 866	struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
 867	struct resource *res;
 868
 869	mixer_res->vp = devm_clk_get(dev, "vp");
 870	if (IS_ERR(mixer_res->vp)) {
 871		dev_err(dev, "failed to get clock 'vp'\n");
 872		return -ENODEV;
 873	}
 874
 875	if (mixer_ctx->has_sclk) {
 876		mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
 877		if (IS_ERR(mixer_res->sclk_mixer)) {
 878			dev_err(dev, "failed to get clock 'sclk_mixer'\n");
 879			return -ENODEV;
 880		}
 881		mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer");
 882		if (IS_ERR(mixer_res->mout_mixer)) {
 883			dev_err(dev, "failed to get clock 'mout_mixer'\n");
 884			return -ENODEV;
 885		}
 886
 887		if (mixer_res->sclk_hdmi && mixer_res->mout_mixer)
 888			clk_set_parent(mixer_res->mout_mixer,
 889				       mixer_res->sclk_hdmi);
 890	}
 891
 892	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
 893	if (res == NULL) {
 894		dev_err(dev, "get memory resource failed.\n");
 895		return -ENXIO;
 896	}
 897
 898	mixer_res->vp_regs = devm_ioremap(dev, res->start,
 899							resource_size(res));
 900	if (mixer_res->vp_regs == NULL) {
 901		dev_err(dev, "register mapping failed.\n");
 902		return -ENXIO;
 903	}
 904
 905	return 0;
 906}
 907
 908static int mixer_initialize(struct mixer_context *mixer_ctx,
 909			struct drm_device *drm_dev)
 910{
 911	int ret;
 912	struct exynos_drm_private *priv;
 913	priv = drm_dev->dev_private;
 914
 915	mixer_ctx->drm_dev = drm_dev;
 916	mixer_ctx->pipe = priv->pipe++;
 917
 918	/* acquire resources: regs, irqs, clocks */
 919	ret = mixer_resources_init(mixer_ctx);
 920	if (ret) {
 921		DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
 922		return ret;
 923	}
 924
 925	if (mixer_ctx->vp_enabled) {
 926		/* acquire vp resources: regs, irqs, clocks */
 927		ret = vp_resources_init(mixer_ctx);
 928		if (ret) {
 929			DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
 930			return ret;
 931		}
 932	}
 933
 934	ret = drm_iommu_attach_device(drm_dev, mixer_ctx->dev);
 935	if (ret)
 936		priv->pipe--;
 937
 938	return ret;
 939}
 940
 941static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
 942{
 943	drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
 944}
 945
 946static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
 947{
 948	struct mixer_context *mixer_ctx = crtc->ctx;
 949	struct mixer_resources *res = &mixer_ctx->mixer_res;
 950
 951	__set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
 952	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 953		return 0;
 954
 955	/* enable vsync interrupt */
 956	mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
 957	mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
 958
 959	return 0;
 960}
 961
 962static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
 963{
 964	struct mixer_context *mixer_ctx = crtc->ctx;
 965	struct mixer_resources *res = &mixer_ctx->mixer_res;
 966
 967	__clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
 968
 969	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 970		return;
 971
 972	/* disable vsync interrupt */
 973	mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
 974	mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
 975}
 976
 977static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
 978{
 979	struct mixer_context *mixer_ctx = crtc->ctx;
 980
 981	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 982		return;
 983
 984	mixer_vsync_set_update(mixer_ctx, false);
 985}
 986
 987static void mixer_update_plane(struct exynos_drm_crtc *crtc,
 988			       struct exynos_drm_plane *plane)
 989{
 990	struct mixer_context *mixer_ctx = crtc->ctx;
 991
 992	DRM_DEBUG_KMS("win: %d\n", plane->index);
 993
 994	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 995		return;
 996
 997	if (plane->index == VP_DEFAULT_WIN)
 998		vp_video_buffer(mixer_ctx, plane);
 999	else
1000		mixer_graph_buffer(mixer_ctx, plane);
1001}
1002
1003static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
1004				struct exynos_drm_plane *plane)
1005{
1006	struct mixer_context *mixer_ctx = crtc->ctx;
1007	struct mixer_resources *res = &mixer_ctx->mixer_res;
1008	unsigned long flags;
1009
1010	DRM_DEBUG_KMS("win: %d\n", plane->index);
1011
1012	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1013		return;
1014
1015	spin_lock_irqsave(&res->reg_slock, flags);
1016	mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
1017	spin_unlock_irqrestore(&res->reg_slock, flags);
1018}
1019
1020static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
1021{
1022	struct mixer_context *mixer_ctx = crtc->ctx;
1023
1024	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1025		return;
1026
1027	mixer_vsync_set_update(mixer_ctx, true);
1028}
1029
1030static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc)
1031{
1032	struct mixer_context *mixer_ctx = crtc->ctx;
1033	int err;
1034
1035	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1036		return;
1037
1038	err = drm_vblank_get(mixer_ctx->drm_dev, mixer_ctx->pipe);
1039	if (err < 0) {
1040		DRM_DEBUG_KMS("failed to acquire vblank counter\n");
1041		return;
1042	}
1043
1044	atomic_set(&mixer_ctx->wait_vsync_event, 1);
1045
1046	/*
1047	 * wait for MIXER to signal VSYNC interrupt or return after
1048	 * timeout which is set to 50ms (refresh rate of 20).
1049	 */
1050	if (!wait_event_timeout(mixer_ctx->wait_vsync_queue,
1051				!atomic_read(&mixer_ctx->wait_vsync_event),
1052				HZ/20))
1053		DRM_DEBUG_KMS("vblank wait timed out.\n");
1054
1055	drm_vblank_put(mixer_ctx->drm_dev, mixer_ctx->pipe);
1056}
1057
1058static void mixer_enable(struct exynos_drm_crtc *crtc)
1059{
1060	struct mixer_context *ctx = crtc->ctx;
1061	struct mixer_resources *res = &ctx->mixer_res;
1062
1063	if (test_bit(MXR_BIT_POWERED, &ctx->flags))
1064		return;
1065
1066	pm_runtime_get_sync(ctx->dev);
1067
 
 
1068	mixer_vsync_set_update(ctx, false);
1069
1070	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1071
1072	if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1073		mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
1074		mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
 
1075	}
1076	mixer_win_reset(ctx);
1077
 
 
1078	mixer_vsync_set_update(ctx, true);
1079
1080	set_bit(MXR_BIT_POWERED, &ctx->flags);
1081}
1082
1083static void mixer_disable(struct exynos_drm_crtc *crtc)
1084{
1085	struct mixer_context *ctx = crtc->ctx;
1086	int i;
1087
1088	if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1089		return;
1090
1091	mixer_stop(ctx);
1092	mixer_regs_dump(ctx);
1093
1094	for (i = 0; i < MIXER_WIN_NR; i++)
1095		mixer_disable_plane(crtc, &ctx->planes[i]);
1096
 
 
1097	pm_runtime_put(ctx->dev);
1098
1099	clear_bit(MXR_BIT_POWERED, &ctx->flags);
1100}
1101
1102/* Only valid for Mixer version 16.0.33.0 */
1103static int mixer_atomic_check(struct exynos_drm_crtc *crtc,
1104		       struct drm_crtc_state *state)
1105{
1106	struct drm_display_mode *mode = &state->adjusted_mode;
1107	u32 w, h;
1108
1109	w = mode->hdisplay;
1110	h = mode->vdisplay;
1111
1112	DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n",
1113		mode->hdisplay, mode->vdisplay, mode->vrefresh,
1114		(mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
1115
1116	if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1117		(w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1118		(w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1119		return 0;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1120
1121	return -EINVAL;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1122}
1123
1124static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1125	.enable			= mixer_enable,
1126	.disable		= mixer_disable,
1127	.enable_vblank		= mixer_enable_vblank,
1128	.disable_vblank		= mixer_disable_vblank,
1129	.wait_for_vblank	= mixer_wait_for_vblank,
1130	.atomic_begin		= mixer_atomic_begin,
1131	.update_plane		= mixer_update_plane,
1132	.disable_plane		= mixer_disable_plane,
1133	.atomic_flush		= mixer_atomic_flush,
1134	.atomic_check		= mixer_atomic_check,
 
1135};
1136
1137static struct mixer_drv_data exynos5420_mxr_drv_data = {
1138	.version = MXR_VER_128_0_0_184,
1139	.is_vp_enabled = 0,
1140};
1141
1142static struct mixer_drv_data exynos5250_mxr_drv_data = {
1143	.version = MXR_VER_16_0_33_0,
1144	.is_vp_enabled = 0,
1145};
1146
1147static struct mixer_drv_data exynos4212_mxr_drv_data = {
1148	.version = MXR_VER_0_0_0_16,
1149	.is_vp_enabled = 1,
1150};
1151
1152static struct mixer_drv_data exynos4210_mxr_drv_data = {
1153	.version = MXR_VER_0_0_0_16,
1154	.is_vp_enabled = 1,
1155	.has_sclk = 1,
1156};
1157
1158static const struct platform_device_id mixer_driver_types[] = {
1159	{
1160		.name		= "s5p-mixer",
1161		.driver_data	= (unsigned long)&exynos4210_mxr_drv_data,
1162	}, {
1163		.name		= "exynos5-mixer",
1164		.driver_data	= (unsigned long)&exynos5250_mxr_drv_data,
1165	}, {
1166		/* end node */
1167	}
1168};
1169
1170static struct of_device_id mixer_match_types[] = {
1171	{
1172		.compatible = "samsung,exynos4210-mixer",
1173		.data	= &exynos4210_mxr_drv_data,
1174	}, {
1175		.compatible = "samsung,exynos4212-mixer",
1176		.data	= &exynos4212_mxr_drv_data,
1177	}, {
1178		.compatible = "samsung,exynos5-mixer",
1179		.data	= &exynos5250_mxr_drv_data,
1180	}, {
1181		.compatible = "samsung,exynos5250-mixer",
1182		.data	= &exynos5250_mxr_drv_data,
1183	}, {
1184		.compatible = "samsung,exynos5420-mixer",
1185		.data	= &exynos5420_mxr_drv_data,
1186	}, {
1187		/* end node */
1188	}
1189};
1190MODULE_DEVICE_TABLE(of, mixer_match_types);
1191
1192static int mixer_bind(struct device *dev, struct device *manager, void *data)
1193{
1194	struct mixer_context *ctx = dev_get_drvdata(dev);
1195	struct drm_device *drm_dev = data;
1196	struct exynos_drm_plane *exynos_plane;
1197	unsigned int i;
1198	int ret;
1199
1200	ret = mixer_initialize(ctx, drm_dev);
1201	if (ret)
1202		return ret;
1203
1204	for (i = 0; i < MIXER_WIN_NR; i++) {
1205		if (i == VP_DEFAULT_WIN && !ctx->vp_enabled)
 
1206			continue;
1207
1208		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1209					1 << ctx->pipe, &plane_configs[i]);
1210		if (ret)
1211			return ret;
1212	}
1213
1214	exynos_plane = &ctx->planes[DEFAULT_WIN];
1215	ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1216					   ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI,
1217					   &mixer_crtc_ops, ctx);
1218	if (IS_ERR(ctx->crtc)) {
1219		mixer_ctx_remove(ctx);
1220		ret = PTR_ERR(ctx->crtc);
1221		goto free_ctx;
1222	}
1223
1224	return 0;
1225
1226free_ctx:
1227	devm_kfree(dev, ctx);
1228	return ret;
1229}
1230
1231static void mixer_unbind(struct device *dev, struct device *master, void *data)
1232{
1233	struct mixer_context *ctx = dev_get_drvdata(dev);
1234
1235	mixer_ctx_remove(ctx);
1236}
1237
1238static const struct component_ops mixer_component_ops = {
1239	.bind	= mixer_bind,
1240	.unbind	= mixer_unbind,
1241};
1242
1243static int mixer_probe(struct platform_device *pdev)
1244{
1245	struct device *dev = &pdev->dev;
1246	struct mixer_drv_data *drv;
1247	struct mixer_context *ctx;
1248	int ret;
1249
1250	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1251	if (!ctx) {
1252		DRM_ERROR("failed to alloc mixer context.\n");
1253		return -ENOMEM;
1254	}
1255
1256	if (dev->of_node) {
1257		const struct of_device_id *match;
1258
1259		match = of_match_node(mixer_match_types, dev->of_node);
1260		drv = (struct mixer_drv_data *)match->data;
1261	} else {
1262		drv = (struct mixer_drv_data *)
1263			platform_get_device_id(pdev)->driver_data;
1264	}
1265
1266	ctx->pdev = pdev;
1267	ctx->dev = dev;
1268	ctx->vp_enabled = drv->is_vp_enabled;
1269	ctx->has_sclk = drv->has_sclk;
1270	ctx->mxr_ver = drv->version;
1271	init_waitqueue_head(&ctx->wait_vsync_queue);
1272	atomic_set(&ctx->wait_vsync_event, 0);
 
 
 
1273
1274	platform_set_drvdata(pdev, ctx);
1275
1276	ret = component_add(&pdev->dev, &mixer_component_ops);
1277	if (!ret)
1278		pm_runtime_enable(dev);
1279
1280	return ret;
1281}
1282
1283static int mixer_remove(struct platform_device *pdev)
1284{
1285	pm_runtime_disable(&pdev->dev);
1286
1287	component_del(&pdev->dev, &mixer_component_ops);
1288
1289	return 0;
1290}
1291
1292static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1293{
1294	struct mixer_context *ctx = dev_get_drvdata(dev);
1295	struct mixer_resources *res = &ctx->mixer_res;
1296
1297	clk_disable_unprepare(res->hdmi);
1298	clk_disable_unprepare(res->mixer);
1299	if (ctx->vp_enabled) {
1300		clk_disable_unprepare(res->vp);
1301		if (ctx->has_sclk)
1302			clk_disable_unprepare(res->sclk_mixer);
1303	}
1304
1305	return 0;
1306}
1307
1308static int __maybe_unused exynos_mixer_resume(struct device *dev)
1309{
1310	struct mixer_context *ctx = dev_get_drvdata(dev);
1311	struct mixer_resources *res = &ctx->mixer_res;
1312	int ret;
1313
1314	ret = clk_prepare_enable(res->mixer);
1315	if (ret < 0) {
1316		DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1317		return ret;
1318	}
1319	ret = clk_prepare_enable(res->hdmi);
1320	if (ret < 0) {
1321		DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1322		return ret;
1323	}
1324	if (ctx->vp_enabled) {
1325		ret = clk_prepare_enable(res->vp);
1326		if (ret < 0) {
1327			DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1328				  ret);
1329			return ret;
1330		}
1331		if (ctx->has_sclk) {
1332			ret = clk_prepare_enable(res->sclk_mixer);
1333			if (ret < 0) {
1334				DRM_ERROR("Failed to prepare_enable the " \
1335					   "sclk_mixer clk [%d]\n",
1336					  ret);
1337				return ret;
1338			}
1339		}
1340	}
1341
1342	return 0;
1343}
1344
1345static const struct dev_pm_ops exynos_mixer_pm_ops = {
1346	SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1347};
1348
1349struct platform_driver mixer_driver = {
1350	.driver = {
1351		.name = "exynos-mixer",
1352		.owner = THIS_MODULE,
1353		.pm = &exynos_mixer_pm_ops,
1354		.of_match_table = mixer_match_types,
1355	},
1356	.probe = mixer_probe,
1357	.remove = mixer_remove,
1358	.id_table	= mixer_driver_types,
1359};
v4.17
   1/*
   2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
   3 * Authors:
   4 * Seung-Woo Kim <sw0312.kim@samsung.com>
   5 *	Inki Dae <inki.dae@samsung.com>
   6 *	Joonyoung Shim <jy0922.shim@samsung.com>
   7 *
   8 * Based on drivers/media/video/s5p-tv/mixer_reg.c
   9 *
  10 * This program is free software; you can redistribute  it and/or modify it
  11 * under  the terms of  the GNU General  Public License as published by the
  12 * Free Software Foundation;  either version 2 of the  License, or (at your
  13 * option) any later version.
  14 *
  15 */
  16
  17#include <drm/drmP.h>
  18
  19#include "regs-mixer.h"
  20#include "regs-vp.h"
  21
  22#include <linux/kernel.h>
  23#include <linux/spinlock.h>
  24#include <linux/wait.h>
  25#include <linux/i2c.h>
  26#include <linux/platform_device.h>
  27#include <linux/interrupt.h>
  28#include <linux/irq.h>
  29#include <linux/delay.h>
  30#include <linux/pm_runtime.h>
  31#include <linux/clk.h>
  32#include <linux/regulator/consumer.h>
  33#include <linux/of.h>
  34#include <linux/of_device.h>
  35#include <linux/component.h>
  36
  37#include <drm/exynos_drm.h>
  38
  39#include "exynos_drm_drv.h"
  40#include "exynos_drm_crtc.h"
  41#include "exynos_drm_fb.h"
  42#include "exynos_drm_plane.h"
  43#include "exynos_drm_iommu.h"
  44
  45#define MIXER_WIN_NR		3
  46#define VP_DEFAULT_WIN		2
  47
  48/*
  49 * Mixer color space conversion coefficient triplet.
  50 * Used for CSC from RGB to YCbCr.
  51 * Each coefficient is a 10-bit fixed point number with
  52 * sign and no integer part, i.e.
  53 * [0:8] = fractional part (representing a value y = x / 2^9)
  54 * [9] = sign
  55 * Negative values are encoded with two's complement.
  56 */
  57#define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
  58#define MXR_CSC_CT(a0, a1, a2) \
  59  ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
  60
  61/* YCbCr value, used for mixer background color configuration. */
  62#define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
  63
  64/* The pixelformats that are natively supported by the mixer. */
  65#define MXR_FORMAT_RGB565	4
  66#define MXR_FORMAT_ARGB1555	5
  67#define MXR_FORMAT_ARGB4444	6
  68#define MXR_FORMAT_ARGB8888	7
  69
 
 
 
 
 
 
 
 
 
 
 
 
 
  70enum mixer_version_id {
  71	MXR_VER_0_0_0_16,
  72	MXR_VER_16_0_33_0,
  73	MXR_VER_128_0_0_184,
  74};
  75
  76enum mixer_flag_bits {
  77	MXR_BIT_POWERED,
  78	MXR_BIT_VSYNC,
  79	MXR_BIT_INTERLACE,
  80	MXR_BIT_VP_ENABLED,
  81	MXR_BIT_HAS_SCLK,
  82};
  83
  84static const uint32_t mixer_formats[] = {
  85	DRM_FORMAT_XRGB4444,
  86	DRM_FORMAT_ARGB4444,
  87	DRM_FORMAT_XRGB1555,
  88	DRM_FORMAT_ARGB1555,
  89	DRM_FORMAT_RGB565,
  90	DRM_FORMAT_XRGB8888,
  91	DRM_FORMAT_ARGB8888,
  92};
  93
  94static const uint32_t vp_formats[] = {
  95	DRM_FORMAT_NV12,
  96	DRM_FORMAT_NV21,
  97};
  98
  99struct mixer_context {
 100	struct platform_device *pdev;
 101	struct device		*dev;
 102	struct drm_device	*drm_dev;
 103	struct exynos_drm_crtc	*crtc;
 104	struct exynos_drm_plane	planes[MIXER_WIN_NR];
 
 105	unsigned long		flags;
 
 
 
 106
 107	int			irq;
 108	void __iomem		*mixer_regs;
 109	void __iomem		*vp_regs;
 110	spinlock_t		reg_slock;
 111	struct clk		*mixer;
 112	struct clk		*vp;
 113	struct clk		*hdmi;
 114	struct clk		*sclk_mixer;
 115	struct clk		*sclk_hdmi;
 116	struct clk		*mout_mixer;
 117	enum mixer_version_id	mxr_ver;
 118	int			scan_value;
 
 119};
 120
 121struct mixer_drv_data {
 122	enum mixer_version_id	version;
 123	bool					is_vp_enabled;
 124	bool					has_sclk;
 125};
 126
 127static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
 128	{
 129		.zpos = 0,
 130		.type = DRM_PLANE_TYPE_PRIMARY,
 131		.pixel_formats = mixer_formats,
 132		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
 133		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
 134				EXYNOS_DRM_PLANE_CAP_ZPOS,
 135	}, {
 136		.zpos = 1,
 137		.type = DRM_PLANE_TYPE_CURSOR,
 138		.pixel_formats = mixer_formats,
 139		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
 140		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
 141				EXYNOS_DRM_PLANE_CAP_ZPOS,
 142	}, {
 143		.zpos = 2,
 144		.type = DRM_PLANE_TYPE_OVERLAY,
 145		.pixel_formats = vp_formats,
 146		.num_pixel_formats = ARRAY_SIZE(vp_formats),
 147		.capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
 148				EXYNOS_DRM_PLANE_CAP_ZPOS |
 149				EXYNOS_DRM_PLANE_CAP_TILE,
 150	},
 151};
 152
 153static const u8 filter_y_horiz_tap8[] = {
 154	0,	-1,	-1,	-1,	-1,	-1,	-1,	-1,
 155	-1,	-1,	-1,	-1,	-1,	0,	0,	0,
 156	0,	2,	4,	5,	6,	6,	6,	6,
 157	6,	5,	5,	4,	3,	2,	1,	1,
 158	0,	-6,	-12,	-16,	-18,	-20,	-21,	-20,
 159	-20,	-18,	-16,	-13,	-10,	-8,	-5,	-2,
 160	127,	126,	125,	121,	114,	107,	99,	89,
 161	79,	68,	57,	46,	35,	25,	16,	8,
 162};
 163
 164static const u8 filter_y_vert_tap4[] = {
 165	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
 166	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
 167	127,	126,	124,	118,	111,	102,	92,	81,
 168	70,	59,	48,	37,	27,	19,	11,	5,
 169	0,	5,	11,	19,	27,	37,	48,	59,
 170	70,	81,	92,	102,	111,	118,	124,	126,
 171	0,	0,	-1,	-1,	-2,	-3,	-4,	-5,
 172	-6,	-7,	-8,	-8,	-8,	-8,	-6,	-3,
 173};
 174
 175static const u8 filter_cr_horiz_tap4[] = {
 176	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
 177	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
 178	127,	126,	124,	118,	111,	102,	92,	81,
 179	70,	59,	48,	37,	27,	19,	11,	5,
 180};
 181
 182static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
 
 
 
 
 
 
 
 
 
 
 
 
 183{
 184	return readl(ctx->vp_regs + reg_id);
 185}
 186
 187static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
 188				 u32 val)
 189{
 190	writel(val, ctx->vp_regs + reg_id);
 191}
 192
 193static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
 194				 u32 val, u32 mask)
 195{
 196	u32 old = vp_reg_read(ctx, reg_id);
 197
 198	val = (val & mask) | (old & ~mask);
 199	writel(val, ctx->vp_regs + reg_id);
 200}
 201
 202static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
 203{
 204	return readl(ctx->mixer_regs + reg_id);
 205}
 206
 207static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
 208				 u32 val)
 209{
 210	writel(val, ctx->mixer_regs + reg_id);
 211}
 212
 213static inline void mixer_reg_writemask(struct mixer_context *ctx,
 214				 u32 reg_id, u32 val, u32 mask)
 215{
 216	u32 old = mixer_reg_read(ctx, reg_id);
 217
 218	val = (val & mask) | (old & ~mask);
 219	writel(val, ctx->mixer_regs + reg_id);
 220}
 221
 222static void mixer_regs_dump(struct mixer_context *ctx)
 223{
 224#define DUMPREG(reg_id) \
 225do { \
 226	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
 227		(u32)readl(ctx->mixer_regs + reg_id)); \
 228} while (0)
 229
 230	DUMPREG(MXR_STATUS);
 231	DUMPREG(MXR_CFG);
 232	DUMPREG(MXR_INT_EN);
 233	DUMPREG(MXR_INT_STATUS);
 234
 235	DUMPREG(MXR_LAYER_CFG);
 236	DUMPREG(MXR_VIDEO_CFG);
 237
 238	DUMPREG(MXR_GRAPHIC0_CFG);
 239	DUMPREG(MXR_GRAPHIC0_BASE);
 240	DUMPREG(MXR_GRAPHIC0_SPAN);
 241	DUMPREG(MXR_GRAPHIC0_WH);
 242	DUMPREG(MXR_GRAPHIC0_SXY);
 243	DUMPREG(MXR_GRAPHIC0_DXY);
 244
 245	DUMPREG(MXR_GRAPHIC1_CFG);
 246	DUMPREG(MXR_GRAPHIC1_BASE);
 247	DUMPREG(MXR_GRAPHIC1_SPAN);
 248	DUMPREG(MXR_GRAPHIC1_WH);
 249	DUMPREG(MXR_GRAPHIC1_SXY);
 250	DUMPREG(MXR_GRAPHIC1_DXY);
 251#undef DUMPREG
 252}
 253
 254static void vp_regs_dump(struct mixer_context *ctx)
 255{
 256#define DUMPREG(reg_id) \
 257do { \
 258	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
 259		(u32) readl(ctx->vp_regs + reg_id)); \
 260} while (0)
 261
 262	DUMPREG(VP_ENABLE);
 263	DUMPREG(VP_SRESET);
 264	DUMPREG(VP_SHADOW_UPDATE);
 265	DUMPREG(VP_FIELD_ID);
 266	DUMPREG(VP_MODE);
 267	DUMPREG(VP_IMG_SIZE_Y);
 268	DUMPREG(VP_IMG_SIZE_C);
 269	DUMPREG(VP_PER_RATE_CTRL);
 270	DUMPREG(VP_TOP_Y_PTR);
 271	DUMPREG(VP_BOT_Y_PTR);
 272	DUMPREG(VP_TOP_C_PTR);
 273	DUMPREG(VP_BOT_C_PTR);
 274	DUMPREG(VP_ENDIAN_MODE);
 275	DUMPREG(VP_SRC_H_POSITION);
 276	DUMPREG(VP_SRC_V_POSITION);
 277	DUMPREG(VP_SRC_WIDTH);
 278	DUMPREG(VP_SRC_HEIGHT);
 279	DUMPREG(VP_DST_H_POSITION);
 280	DUMPREG(VP_DST_V_POSITION);
 281	DUMPREG(VP_DST_WIDTH);
 282	DUMPREG(VP_DST_HEIGHT);
 283	DUMPREG(VP_H_RATIO);
 284	DUMPREG(VP_V_RATIO);
 285
 286#undef DUMPREG
 287}
 288
 289static inline void vp_filter_set(struct mixer_context *ctx,
 290		int reg_id, const u8 *data, unsigned int size)
 291{
 292	/* assure 4-byte align */
 293	BUG_ON(size & 3);
 294	for (; size; size -= 4, reg_id += 4, data += 4) {
 295		u32 val = (data[0] << 24) |  (data[1] << 16) |
 296			(data[2] << 8) | data[3];
 297		vp_reg_write(ctx, reg_id, val);
 298	}
 299}
 300
 301static void vp_default_filter(struct mixer_context *ctx)
 302{
 303	vp_filter_set(ctx, VP_POLY8_Y0_LL,
 304		filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
 305	vp_filter_set(ctx, VP_POLY4_Y0_LL,
 306		filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
 307	vp_filter_set(ctx, VP_POLY4_C0_LL,
 308		filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
 309}
 310
 311static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
 312				bool alpha)
 313{
 
 314	u32 val;
 315
 316	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
 317	if (alpha) {
 318		/* blending based on pixel alpha */
 319		val |= MXR_GRP_CFG_BLEND_PRE_MUL;
 320		val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
 321	}
 322	mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
 323			    val, MXR_GRP_CFG_MISC_MASK);
 324}
 325
 326static void mixer_cfg_vp_blend(struct mixer_context *ctx)
 327{
 
 328	u32 val;
 329
 330	/*
 331	 * No blending at the moment since the NV12/NV21 pixelformats don't
 332	 * have an alpha channel. However the mixer supports a global alpha
 333	 * value for a layer. Once this functionality is exposed, we can
 334	 * support blending of the video layer through this.
 335	 */
 336	val = 0;
 337	mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
 338}
 339
 340static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
 341{
 
 
 342	/* block update on vsync */
 343	mixer_reg_writemask(ctx, MXR_STATUS, enable ?
 344			MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
 345
 346	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
 347		vp_reg_write(ctx, VP_SHADOW_UPDATE, enable ?
 348			VP_SHADOW_UPDATE_ENABLE : 0);
 349}
 350
 351static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
 352{
 
 353	u32 val;
 354
 355	/* choosing between interlace and progressive mode */
 356	val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
 357		MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
 358
 359	if (ctx->mxr_ver == MXR_VER_128_0_0_184)
 360		mixer_reg_write(ctx, MXR_RESOLUTION,
 361			MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
 362	else
 363		val |= ctx->scan_value;
 
 
 
 
 
 
 
 
 364
 365	mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
 366}
 367
 368static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
 369{
 
 370	u32 val;
 371
 372	switch (height) {
 373	case 480:
 374	case 576:
 375		val = MXR_CFG_RGB601_0_255;
 376		break;
 377	case 720:
 378	case 1080:
 379	default:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 380		val = MXR_CFG_RGB709_16_235;
 381		/* Configure the BT.709 CSC matrix for full range RGB. */
 382		mixer_reg_write(ctx, MXR_CM_COEFF_Y,
 383			MXR_CSC_CT( 0.184,  0.614,  0.063) |
 384			MXR_CM_COEFF_RGB_FULL);
 385		mixer_reg_write(ctx, MXR_CM_COEFF_CB,
 386			MXR_CSC_CT(-0.102, -0.338,  0.440));
 387		mixer_reg_write(ctx, MXR_CM_COEFF_CR,
 388			MXR_CSC_CT( 0.440, -0.399, -0.040));
 389		break;
 390	}
 391
 392	mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
 393}
 394
 395static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
 396			    unsigned int priority, bool enable)
 397{
 
 398	u32 val = enable ? ~0 : 0;
 399
 400	switch (win) {
 401	case 0:
 402		mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
 403		mixer_reg_writemask(ctx, MXR_LAYER_CFG,
 404				    MXR_LAYER_CFG_GRP0_VAL(priority),
 405				    MXR_LAYER_CFG_GRP0_MASK);
 406		break;
 407	case 1:
 408		mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
 409		mixer_reg_writemask(ctx, MXR_LAYER_CFG,
 410				    MXR_LAYER_CFG_GRP1_VAL(priority),
 411				    MXR_LAYER_CFG_GRP1_MASK);
 412
 413		break;
 414	case VP_DEFAULT_WIN:
 415		if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
 416			vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
 417			mixer_reg_writemask(ctx, MXR_CFG, val,
 418				MXR_CFG_VP_ENABLE);
 419			mixer_reg_writemask(ctx, MXR_LAYER_CFG,
 420					    MXR_LAYER_CFG_VP_VAL(priority),
 421					    MXR_LAYER_CFG_VP_MASK);
 422		}
 423		break;
 424	}
 425}
 426
 427static void mixer_run(struct mixer_context *ctx)
 428{
 429	mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
 
 
 430}
 431
 432static void mixer_stop(struct mixer_context *ctx)
 433{
 
 434	int timeout = 20;
 435
 436	mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
 437
 438	while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
 439			--timeout)
 440		usleep_range(10000, 12000);
 441}
 442
 443static void mixer_commit(struct mixer_context *ctx)
 444{
 445	struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
 446
 447	mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
 448	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
 449	mixer_run(ctx);
 450}
 451
 452static void vp_video_buffer(struct mixer_context *ctx,
 453			    struct exynos_drm_plane *plane)
 454{
 455	struct exynos_drm_plane_state *state =
 456				to_exynos_plane_state(plane->base.state);
 
 
 457	struct drm_framebuffer *fb = state->base.fb;
 458	unsigned int priority = state->base.normalized_zpos + 1;
 459	unsigned long flags;
 460	dma_addr_t luma_addr[2], chroma_addr[2];
 461	bool is_tiled, is_nv21;
 
 462	u32 val;
 463
 464	is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
 465	is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
 
 
 
 
 
 
 
 
 
 
 466
 467	luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
 468	chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
 469
 470	if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
 471		if (is_tiled) {
 
 472			luma_addr[1] = luma_addr[0] + 0x40;
 473			chroma_addr[1] = chroma_addr[0] + 0x40;
 474		} else {
 475			luma_addr[1] = luma_addr[0] + fb->pitches[0];
 476			chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
 477		}
 478	} else {
 
 479		luma_addr[1] = 0;
 480		chroma_addr[1] = 0;
 481	}
 482
 483	spin_lock_irqsave(&ctx->reg_slock, flags);
 484
 485	vp_reg_write(ctx, VP_SHADOW_UPDATE, 1);
 486	/* interlace or progressive scan mode */
 487	val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
 488	vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
 489
 490	/* setup format */
 491	val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
 492	val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
 493	vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
 494
 495	/* setting size of input image */
 496	vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
 497		VP_IMG_VSIZE(fb->height));
 498	/* chroma plane for NV12/NV21 is half the height of the luma plane */
 499	vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
 500		VP_IMG_VSIZE(fb->height / 2));
 501
 502	vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
 503	vp_reg_write(ctx, VP_SRC_H_POSITION,
 
 504			VP_SRC_H_POSITION_VAL(state->src.x));
 505	vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
 506	vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
 507
 508	if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
 509		vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
 510		vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
 511		vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
 512		vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
 513	} else {
 514		vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
 515		vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
 516		vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
 517		vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
 518	}
 519
 520	vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
 521	vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
 522
 523	vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
 524
 525	/* set buffer address to vp */
 526	vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
 527	vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
 528	vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
 529	vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
 530
 531	mixer_cfg_layer(ctx, plane->index, priority, true);
 
 
 532	mixer_cfg_vp_blend(ctx);
 
 533
 534	spin_unlock_irqrestore(&ctx->reg_slock, flags);
 535
 536	mixer_regs_dump(ctx);
 537	vp_regs_dump(ctx);
 538}
 539
 540static void mixer_layer_update(struct mixer_context *ctx)
 541{
 542	mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
 
 
 543}
 544
 545static void mixer_graph_buffer(struct mixer_context *ctx,
 546			       struct exynos_drm_plane *plane)
 547{
 548	struct exynos_drm_plane_state *state =
 549				to_exynos_plane_state(plane->base.state);
 
 
 550	struct drm_framebuffer *fb = state->base.fb;
 551	unsigned int priority = state->base.normalized_zpos + 1;
 552	unsigned long flags;
 553	unsigned int win = plane->index;
 554	unsigned int x_ratio = 0, y_ratio = 0;
 555	unsigned int dst_x_offset, dst_y_offset;
 556	dma_addr_t dma_addr;
 557	unsigned int fmt;
 558	u32 val;
 559
 560	switch (fb->format->format) {
 561	case DRM_FORMAT_XRGB4444:
 562	case DRM_FORMAT_ARGB4444:
 563		fmt = MXR_FORMAT_ARGB4444;
 564		break;
 565
 566	case DRM_FORMAT_XRGB1555:
 567	case DRM_FORMAT_ARGB1555:
 568		fmt = MXR_FORMAT_ARGB1555;
 569		break;
 570
 571	case DRM_FORMAT_RGB565:
 572		fmt = MXR_FORMAT_RGB565;
 573		break;
 574
 575	case DRM_FORMAT_XRGB8888:
 576	case DRM_FORMAT_ARGB8888:
 577	default:
 578		fmt = MXR_FORMAT_ARGB8888;
 579		break;
 
 
 
 
 580	}
 581
 582	/* ratio is already checked by common plane code */
 583	x_ratio = state->h_ratio == (1 << 15);
 584	y_ratio = state->v_ratio == (1 << 15);
 585
 586	dst_x_offset = state->crtc.x;
 587	dst_y_offset = state->crtc.y;
 588
 589	/* translate dma address base s.t. the source image offset is zero */
 590	dma_addr = exynos_drm_fb_dma_addr(fb, 0)
 591		+ (state->src.x * fb->format->cpp[0])
 592		+ (state->src.y * fb->pitches[0]);
 
 
 593
 594	spin_lock_irqsave(&ctx->reg_slock, flags);
 
 
 
 
 
 595
 596	/* setup format */
 597	mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
 598		MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
 599
 600	/* setup geometry */
 601	mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
 602			fb->pitches[0] / fb->format->cpp[0]);
 
 
 
 
 
 
 
 
 603
 604	val  = MXR_GRP_WH_WIDTH(state->src.w);
 605	val |= MXR_GRP_WH_HEIGHT(state->src.h);
 606	val |= MXR_GRP_WH_H_SCALE(x_ratio);
 607	val |= MXR_GRP_WH_V_SCALE(y_ratio);
 608	mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
 
 
 
 
 
 609
 610	/* setup offsets in display image */
 611	val  = MXR_GRP_DXY_DX(dst_x_offset);
 612	val |= MXR_GRP_DXY_DY(dst_y_offset);
 613	mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
 614
 615	/* set buffer address to mixer */
 616	mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
 617
 618	mixer_cfg_layer(ctx, win, priority, true);
 619	mixer_cfg_gfx_blend(ctx, win, fb->format->has_alpha);
 
 
 620
 621	/* layer update mandatory for mixer 16.0.33.0 */
 622	if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
 623		ctx->mxr_ver == MXR_VER_128_0_0_184)
 624		mixer_layer_update(ctx);
 625
 626	spin_unlock_irqrestore(&ctx->reg_slock, flags);
 
 
 627
 628	mixer_regs_dump(ctx);
 629}
 630
 631static void vp_win_reset(struct mixer_context *ctx)
 632{
 633	unsigned int tries = 100;
 
 634
 635	vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
 636	while (--tries) {
 637		/* waiting until VP_SRESET_PROCESSING is 0 */
 638		if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
 639			break;
 640		mdelay(10);
 641	}
 642	WARN(tries == 0, "failed to reset Video Processor\n");
 643}
 644
 645static void mixer_win_reset(struct mixer_context *ctx)
 646{
 
 647	unsigned long flags;
 648
 649	spin_lock_irqsave(&ctx->reg_slock, flags);
 650
 651	mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
 652
 653	/* set output in RGB888 mode */
 654	mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
 655
 656	/* 16 beat burst in DMA */
 657	mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
 658		MXR_STATUS_BURST_MASK);
 659
 660	/* reset default layer priority */
 661	mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
 662
 663	/* set all background colors to RGB (0,0,0) */
 664	mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
 665	mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
 666	mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
 667
 668	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
 669		/* configuration of Video Processor Registers */
 670		vp_win_reset(ctx);
 671		vp_default_filter(ctx);
 672	}
 673
 674	/* disable all layers */
 675	mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
 676	mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
 677	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
 678		mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
 679
 680	/* set all source image offsets to zero */
 681	mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
 682	mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
 683
 684	spin_unlock_irqrestore(&ctx->reg_slock, flags);
 685}
 686
 687static irqreturn_t mixer_irq_handler(int irq, void *arg)
 688{
 689	struct mixer_context *ctx = arg;
 
 690	u32 val, base, shadow;
 
 691
 692	spin_lock(&ctx->reg_slock);
 693
 694	/* read interrupt status for handling and clearing flags for VSYNC */
 695	val = mixer_reg_read(ctx, MXR_INT_STATUS);
 696
 697	/* handling VSYNC */
 698	if (val & MXR_INT_STATUS_VSYNC) {
 699		/* vsync interrupt use different bit for read and clear */
 700		val |= MXR_INT_CLEAR_VSYNC;
 701		val &= ~MXR_INT_STATUS_VSYNC;
 702
 703		/* interlace scan need to check shadow register */
 704		if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
 705			if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
 706			    vp_reg_read(ctx, VP_SHADOW_UPDATE))
 
 707				goto out;
 708
 709			base = mixer_reg_read(ctx, MXR_CFG);
 710			shadow = mixer_reg_read(ctx, MXR_CFG_S);
 711			if (base != shadow)
 712				goto out;
 
 
 
 
 
 713
 714			base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
 715			shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
 716			if (base != shadow)
 717				goto out;
 718
 719			base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
 720			shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
 721			if (base != shadow)
 722				goto out;
 723		}
 724
 725		drm_crtc_handle_vblank(&ctx->crtc->base);
 
 
 
 
 726	}
 727
 728out:
 729	/* clear interrupts */
 730	mixer_reg_write(ctx, MXR_INT_STATUS, val);
 731
 732	spin_unlock(&ctx->reg_slock);
 733
 734	return IRQ_HANDLED;
 735}
 736
 737static int mixer_resources_init(struct mixer_context *mixer_ctx)
 738{
 739	struct device *dev = &mixer_ctx->pdev->dev;
 
 740	struct resource *res;
 741	int ret;
 742
 743	spin_lock_init(&mixer_ctx->reg_slock);
 744
 745	mixer_ctx->mixer = devm_clk_get(dev, "mixer");
 746	if (IS_ERR(mixer_ctx->mixer)) {
 747		dev_err(dev, "failed to get clock 'mixer'\n");
 748		return -ENODEV;
 749	}
 750
 751	mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
 752	if (IS_ERR(mixer_ctx->hdmi)) {
 753		dev_err(dev, "failed to get clock 'hdmi'\n");
 754		return PTR_ERR(mixer_ctx->hdmi);
 755	}
 756
 757	mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
 758	if (IS_ERR(mixer_ctx->sclk_hdmi)) {
 759		dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
 760		return -ENODEV;
 761	}
 762	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
 763	if (res == NULL) {
 764		dev_err(dev, "get memory resource failed.\n");
 765		return -ENXIO;
 766	}
 767
 768	mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
 769							resource_size(res));
 770	if (mixer_ctx->mixer_regs == NULL) {
 771		dev_err(dev, "register mapping failed.\n");
 772		return -ENXIO;
 773	}
 774
 775	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
 776	if (res == NULL) {
 777		dev_err(dev, "get interrupt resource failed.\n");
 778		return -ENXIO;
 779	}
 780
 781	ret = devm_request_irq(dev, res->start, mixer_irq_handler,
 782						0, "drm_mixer", mixer_ctx);
 783	if (ret) {
 784		dev_err(dev, "request interrupt failed.\n");
 785		return ret;
 786	}
 787	mixer_ctx->irq = res->start;
 788
 789	return 0;
 790}
 791
 792static int vp_resources_init(struct mixer_context *mixer_ctx)
 793{
 794	struct device *dev = &mixer_ctx->pdev->dev;
 
 795	struct resource *res;
 796
 797	mixer_ctx->vp = devm_clk_get(dev, "vp");
 798	if (IS_ERR(mixer_ctx->vp)) {
 799		dev_err(dev, "failed to get clock 'vp'\n");
 800		return -ENODEV;
 801	}
 802
 803	if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
 804		mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
 805		if (IS_ERR(mixer_ctx->sclk_mixer)) {
 806			dev_err(dev, "failed to get clock 'sclk_mixer'\n");
 807			return -ENODEV;
 808		}
 809		mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
 810		if (IS_ERR(mixer_ctx->mout_mixer)) {
 811			dev_err(dev, "failed to get clock 'mout_mixer'\n");
 812			return -ENODEV;
 813		}
 814
 815		if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
 816			clk_set_parent(mixer_ctx->mout_mixer,
 817				       mixer_ctx->sclk_hdmi);
 818	}
 819
 820	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
 821	if (res == NULL) {
 822		dev_err(dev, "get memory resource failed.\n");
 823		return -ENXIO;
 824	}
 825
 826	mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
 827							resource_size(res));
 828	if (mixer_ctx->vp_regs == NULL) {
 829		dev_err(dev, "register mapping failed.\n");
 830		return -ENXIO;
 831	}
 832
 833	return 0;
 834}
 835
 836static int mixer_initialize(struct mixer_context *mixer_ctx,
 837			struct drm_device *drm_dev)
 838{
 839	int ret;
 840	struct exynos_drm_private *priv;
 841	priv = drm_dev->dev_private;
 842
 843	mixer_ctx->drm_dev = drm_dev;
 
 844
 845	/* acquire resources: regs, irqs, clocks */
 846	ret = mixer_resources_init(mixer_ctx);
 847	if (ret) {
 848		DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
 849		return ret;
 850	}
 851
 852	if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
 853		/* acquire vp resources: regs, irqs, clocks */
 854		ret = vp_resources_init(mixer_ctx);
 855		if (ret) {
 856			DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
 857			return ret;
 858		}
 859	}
 860
 861	return drm_iommu_attach_device(drm_dev, mixer_ctx->dev);
 
 
 
 
 862}
 863
 864static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
 865{
 866	drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
 867}
 868
 869static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
 870{
 871	struct mixer_context *mixer_ctx = crtc->ctx;
 
 872
 873	__set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
 874	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 875		return 0;
 876
 877	/* enable vsync interrupt */
 878	mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
 879	mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
 880
 881	return 0;
 882}
 883
 884static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
 885{
 886	struct mixer_context *mixer_ctx = crtc->ctx;
 
 887
 888	__clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
 889
 890	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 891		return;
 892
 893	/* disable vsync interrupt */
 894	mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
 895	mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
 896}
 897
 898static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
 899{
 900	struct mixer_context *mixer_ctx = crtc->ctx;
 901
 902	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 903		return;
 904
 905	mixer_vsync_set_update(mixer_ctx, false);
 906}
 907
 908static void mixer_update_plane(struct exynos_drm_crtc *crtc,
 909			       struct exynos_drm_plane *plane)
 910{
 911	struct mixer_context *mixer_ctx = crtc->ctx;
 912
 913	DRM_DEBUG_KMS("win: %d\n", plane->index);
 914
 915	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 916		return;
 917
 918	if (plane->index == VP_DEFAULT_WIN)
 919		vp_video_buffer(mixer_ctx, plane);
 920	else
 921		mixer_graph_buffer(mixer_ctx, plane);
 922}
 923
 924static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
 925				struct exynos_drm_plane *plane)
 926{
 927	struct mixer_context *mixer_ctx = crtc->ctx;
 
 928	unsigned long flags;
 929
 930	DRM_DEBUG_KMS("win: %d\n", plane->index);
 931
 932	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 933		return;
 934
 935	spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
 936	mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
 937	spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
 938}
 939
 940static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
 941{
 942	struct mixer_context *mixer_ctx = crtc->ctx;
 943
 944	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 945		return;
 946
 947	mixer_vsync_set_update(mixer_ctx, true);
 948	exynos_crtc_handle_event(crtc);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 949}
 950
 951static void mixer_enable(struct exynos_drm_crtc *crtc)
 952{
 953	struct mixer_context *ctx = crtc->ctx;
 
 954
 955	if (test_bit(MXR_BIT_POWERED, &ctx->flags))
 956		return;
 957
 958	pm_runtime_get_sync(ctx->dev);
 959
 960	exynos_drm_pipe_clk_enable(crtc, true);
 961
 962	mixer_vsync_set_update(ctx, false);
 963
 964	mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
 965
 966	if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
 967		mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
 968					MXR_INT_CLEAR_VSYNC);
 969		mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
 970	}
 971	mixer_win_reset(ctx);
 972
 973	mixer_commit(ctx);
 974
 975	mixer_vsync_set_update(ctx, true);
 976
 977	set_bit(MXR_BIT_POWERED, &ctx->flags);
 978}
 979
 980static void mixer_disable(struct exynos_drm_crtc *crtc)
 981{
 982	struct mixer_context *ctx = crtc->ctx;
 983	int i;
 984
 985	if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
 986		return;
 987
 988	mixer_stop(ctx);
 989	mixer_regs_dump(ctx);
 990
 991	for (i = 0; i < MIXER_WIN_NR; i++)
 992		mixer_disable_plane(crtc, &ctx->planes[i]);
 993
 994	exynos_drm_pipe_clk_enable(crtc, false);
 995
 996	pm_runtime_put(ctx->dev);
 997
 998	clear_bit(MXR_BIT_POWERED, &ctx->flags);
 999}
1000
1001static int mixer_mode_valid(struct exynos_drm_crtc *crtc,
1002		const struct drm_display_mode *mode)
1003{
1004	struct mixer_context *ctx = crtc->ctx;
1005	u32 w = mode->hdisplay, h = mode->vdisplay;
1006
1007	DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n", w, h,
1008		mode->vrefresh, !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1009
1010	if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1011		return MODE_OK;
 
 
1012
1013	if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1014	    (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1015	    (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1016		return MODE_OK;
1017
1018	if ((w == 1024 && h == 768) ||
1019	    (w == 1366 && h == 768) ||
1020	    (w == 1280 && h == 1024))
1021		return MODE_OK;
1022
1023	return MODE_BAD;
1024}
1025
1026static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1027		   const struct drm_display_mode *mode,
1028		   struct drm_display_mode *adjusted_mode)
1029{
1030	struct mixer_context *ctx = crtc->ctx;
1031	int width = mode->hdisplay, height = mode->vdisplay, i;
1032
1033	struct {
1034		int hdisplay, vdisplay, htotal, vtotal, scan_val;
1035	} static const modes[] = {
1036		{ 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1037		{ 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1038		{ 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1039		{ 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1040						MXR_CFG_SCAN_HD }
1041	};
1042
1043	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1044		__set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1045	else
1046		__clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1047
1048	if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1049		return true;
1050
1051	for (i = 0; i < ARRAY_SIZE(modes); ++i)
1052		if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1053			ctx->scan_value = modes[i].scan_val;
1054			if (width < modes[i].hdisplay ||
1055			    height < modes[i].vdisplay) {
1056				adjusted_mode->hdisplay = modes[i].hdisplay;
1057				adjusted_mode->hsync_start = modes[i].hdisplay;
1058				adjusted_mode->hsync_end = modes[i].htotal;
1059				adjusted_mode->htotal = modes[i].htotal;
1060				adjusted_mode->vdisplay = modes[i].vdisplay;
1061				adjusted_mode->vsync_start = modes[i].vdisplay;
1062				adjusted_mode->vsync_end = modes[i].vtotal;
1063				adjusted_mode->vtotal = modes[i].vtotal;
1064			}
1065
1066			return true;
1067		}
1068
1069	return false;
1070}
1071
1072static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1073	.enable			= mixer_enable,
1074	.disable		= mixer_disable,
1075	.enable_vblank		= mixer_enable_vblank,
1076	.disable_vblank		= mixer_disable_vblank,
 
1077	.atomic_begin		= mixer_atomic_begin,
1078	.update_plane		= mixer_update_plane,
1079	.disable_plane		= mixer_disable_plane,
1080	.atomic_flush		= mixer_atomic_flush,
1081	.mode_valid		= mixer_mode_valid,
1082	.mode_fixup		= mixer_mode_fixup,
1083};
1084
1085static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1086	.version = MXR_VER_128_0_0_184,
1087	.is_vp_enabled = 0,
1088};
1089
1090static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1091	.version = MXR_VER_16_0_33_0,
1092	.is_vp_enabled = 0,
1093};
1094
1095static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1096	.version = MXR_VER_0_0_0_16,
1097	.is_vp_enabled = 1,
1098};
1099
1100static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1101	.version = MXR_VER_0_0_0_16,
1102	.is_vp_enabled = 1,
1103	.has_sclk = 1,
1104};
1105
1106static const struct of_device_id mixer_match_types[] = {
 
 
 
 
 
 
 
 
 
 
 
 
1107	{
1108		.compatible = "samsung,exynos4210-mixer",
1109		.data	= &exynos4210_mxr_drv_data,
1110	}, {
1111		.compatible = "samsung,exynos4212-mixer",
1112		.data	= &exynos4212_mxr_drv_data,
1113	}, {
1114		.compatible = "samsung,exynos5-mixer",
1115		.data	= &exynos5250_mxr_drv_data,
1116	}, {
1117		.compatible = "samsung,exynos5250-mixer",
1118		.data	= &exynos5250_mxr_drv_data,
1119	}, {
1120		.compatible = "samsung,exynos5420-mixer",
1121		.data	= &exynos5420_mxr_drv_data,
1122	}, {
1123		/* end node */
1124	}
1125};
1126MODULE_DEVICE_TABLE(of, mixer_match_types);
1127
1128static int mixer_bind(struct device *dev, struct device *manager, void *data)
1129{
1130	struct mixer_context *ctx = dev_get_drvdata(dev);
1131	struct drm_device *drm_dev = data;
1132	struct exynos_drm_plane *exynos_plane;
1133	unsigned int i;
1134	int ret;
1135
1136	ret = mixer_initialize(ctx, drm_dev);
1137	if (ret)
1138		return ret;
1139
1140	for (i = 0; i < MIXER_WIN_NR; i++) {
1141		if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1142						     &ctx->flags))
1143			continue;
1144
1145		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1146					&plane_configs[i]);
1147		if (ret)
1148			return ret;
1149	}
1150
1151	exynos_plane = &ctx->planes[DEFAULT_WIN];
1152	ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1153			EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
 
1154	if (IS_ERR(ctx->crtc)) {
1155		mixer_ctx_remove(ctx);
1156		ret = PTR_ERR(ctx->crtc);
1157		goto free_ctx;
1158	}
1159
1160	return 0;
1161
1162free_ctx:
1163	devm_kfree(dev, ctx);
1164	return ret;
1165}
1166
1167static void mixer_unbind(struct device *dev, struct device *master, void *data)
1168{
1169	struct mixer_context *ctx = dev_get_drvdata(dev);
1170
1171	mixer_ctx_remove(ctx);
1172}
1173
1174static const struct component_ops mixer_component_ops = {
1175	.bind	= mixer_bind,
1176	.unbind	= mixer_unbind,
1177};
1178
1179static int mixer_probe(struct platform_device *pdev)
1180{
1181	struct device *dev = &pdev->dev;
1182	const struct mixer_drv_data *drv;
1183	struct mixer_context *ctx;
1184	int ret;
1185
1186	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1187	if (!ctx) {
1188		DRM_ERROR("failed to alloc mixer context.\n");
1189		return -ENOMEM;
1190	}
1191
1192	drv = of_device_get_match_data(dev);
 
 
 
 
 
 
 
 
1193
1194	ctx->pdev = pdev;
1195	ctx->dev = dev;
 
 
1196	ctx->mxr_ver = drv->version;
1197
1198	if (drv->is_vp_enabled)
1199		__set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1200	if (drv->has_sclk)
1201		__set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1202
1203	platform_set_drvdata(pdev, ctx);
1204
1205	ret = component_add(&pdev->dev, &mixer_component_ops);
1206	if (!ret)
1207		pm_runtime_enable(dev);
1208
1209	return ret;
1210}
1211
1212static int mixer_remove(struct platform_device *pdev)
1213{
1214	pm_runtime_disable(&pdev->dev);
1215
1216	component_del(&pdev->dev, &mixer_component_ops);
1217
1218	return 0;
1219}
1220
1221static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1222{
1223	struct mixer_context *ctx = dev_get_drvdata(dev);
 
1224
1225	clk_disable_unprepare(ctx->hdmi);
1226	clk_disable_unprepare(ctx->mixer);
1227	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1228		clk_disable_unprepare(ctx->vp);
1229		if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1230			clk_disable_unprepare(ctx->sclk_mixer);
1231	}
1232
1233	return 0;
1234}
1235
1236static int __maybe_unused exynos_mixer_resume(struct device *dev)
1237{
1238	struct mixer_context *ctx = dev_get_drvdata(dev);
 
1239	int ret;
1240
1241	ret = clk_prepare_enable(ctx->mixer);
1242	if (ret < 0) {
1243		DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1244		return ret;
1245	}
1246	ret = clk_prepare_enable(ctx->hdmi);
1247	if (ret < 0) {
1248		DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1249		return ret;
1250	}
1251	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1252		ret = clk_prepare_enable(ctx->vp);
1253		if (ret < 0) {
1254			DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1255				  ret);
1256			return ret;
1257		}
1258		if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1259			ret = clk_prepare_enable(ctx->sclk_mixer);
1260			if (ret < 0) {
1261				DRM_ERROR("Failed to prepare_enable the " \
1262					   "sclk_mixer clk [%d]\n",
1263					  ret);
1264				return ret;
1265			}
1266		}
1267	}
1268
1269	return 0;
1270}
1271
1272static const struct dev_pm_ops exynos_mixer_pm_ops = {
1273	SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1274};
1275
1276struct platform_driver mixer_driver = {
1277	.driver = {
1278		.name = "exynos-mixer",
1279		.owner = THIS_MODULE,
1280		.pm = &exynos_mixer_pm_ops,
1281		.of_match_table = mixer_match_types,
1282	},
1283	.probe = mixer_probe,
1284	.remove = mixer_remove,
 
1285};