3 * Copyright (C) 2011 Samsung Electronics Co.Ltd
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Inki Dae <inki.dae@samsung.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/clk.h>
20 #include <linux/pm_runtime.h>
22 #include <video/samsung_fimd.h>
23 #include <drm/exynos_drm.h>
25 #include "exynos_drm_drv.h"
26 #include "exynos_drm_fbdev.h"
27 #include "exynos_drm_crtc.h"
28 #include "exynos_drm_iommu.h"
31 * FIMD is stand for Fully Interactive Mobile Display and
32 * as a display controller, it transfers contents drawn on memory
33 * to a LCD Panel through Display Interfaces such as RGB or
37 /* position control register for hardware window 0, 2 ~ 4.*/
38 #define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16)
39 #define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16)
40 /* size control register for hardware window 0. */
41 #define VIDOSD_C_SIZE_W0 (VIDOSD_BASE + 0x08)
42 /* alpha control register for hardware window 1 ~ 4. */
43 #define VIDOSD_C(win) (VIDOSD_BASE + 0x18 + (win) * 16)
44 /* size control register for hardware window 1 ~ 4. */
45 #define VIDOSD_D(win) (VIDOSD_BASE + 0x0C + (win) * 16)
47 #define VIDWx_BUF_START(win, buf) (VIDW_BUF_START(buf) + (win) * 8)
48 #define VIDWx_BUF_END(win, buf) (VIDW_BUF_END(buf) + (win) * 8)
49 #define VIDWx_BUF_SIZE(win, buf) (VIDW_BUF_SIZE(buf) + (win) * 4)
51 /* color key control register for hardware window 1 ~ 4. */
52 #define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + (x * 8))
53 /* color key value register for hardware window 1 ~ 4. */
54 #define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + (x * 8))
56 /* FIMD has totally five hardware windows. */
59 #define get_fimd_context(dev) platform_get_drvdata(to_platform_device(dev))
61 struct fimd_driver_data {
62 unsigned int timing_base;
65 static struct fimd_driver_data exynos4_fimd_driver_data = {
69 static struct fimd_driver_data exynos5_fimd_driver_data = {
70 .timing_base = 0x20000,
73 struct fimd_win_data {
74 unsigned int offset_x;
75 unsigned int offset_y;
76 unsigned int ovl_width;
77 unsigned int ovl_height;
78 unsigned int fb_width;
79 unsigned int fb_height;
83 unsigned int buf_offsize;
84 unsigned int line_size; /* bytes */
90 struct exynos_drm_subdrv subdrv;
92 struct drm_crtc *crtc;
96 struct fimd_win_data win_data[WINDOWS_NR];
98 unsigned int default_win;
99 unsigned long irq_flags;
104 wait_queue_head_t wait_vsync_queue;
105 atomic_t wait_vsync_event;
107 struct exynos_drm_panel_info *panel;
110 static inline struct fimd_driver_data *drm_fimd_get_driver_data(
111 struct platform_device *pdev)
113 return (struct fimd_driver_data *)
114 platform_get_device_id(pdev)->driver_data;
117 static bool fimd_display_is_connected(struct device *dev)
119 DRM_DEBUG_KMS("%s\n", __FILE__);
126 static void *fimd_get_panel(struct device *dev)
128 struct fimd_context *ctx = get_fimd_context(dev);
130 DRM_DEBUG_KMS("%s\n", __FILE__);
135 static int fimd_check_timing(struct device *dev, void *timing)
137 DRM_DEBUG_KMS("%s\n", __FILE__);
144 static int fimd_display_power_on(struct device *dev, int mode)
146 DRM_DEBUG_KMS("%s\n", __FILE__);
153 static struct exynos_drm_display_ops fimd_display_ops = {
154 .type = EXYNOS_DISPLAY_TYPE_LCD,
155 .is_connected = fimd_display_is_connected,
156 .get_panel = fimd_get_panel,
157 .check_timing = fimd_check_timing,
158 .power_on = fimd_display_power_on,
161 static void fimd_dpms(struct device *subdrv_dev, int mode)
163 struct fimd_context *ctx = get_fimd_context(subdrv_dev);
165 DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
167 mutex_lock(&ctx->lock);
170 case DRM_MODE_DPMS_ON:
172 * enable fimd hardware only if suspended status.
174 * P.S. fimd_dpms function would be called at booting time so
175 * clk_enable could be called double time.
178 pm_runtime_get_sync(subdrv_dev);
180 case DRM_MODE_DPMS_STANDBY:
181 case DRM_MODE_DPMS_SUSPEND:
182 case DRM_MODE_DPMS_OFF:
184 pm_runtime_put_sync(subdrv_dev);
187 DRM_DEBUG_KMS("unspecified mode %d\n", mode);
191 mutex_unlock(&ctx->lock);
194 static void fimd_apply(struct device *subdrv_dev)
196 struct fimd_context *ctx = get_fimd_context(subdrv_dev);
197 struct exynos_drm_manager *mgr = ctx->subdrv.manager;
198 struct exynos_drm_manager_ops *mgr_ops = mgr->ops;
199 struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops;
200 struct fimd_win_data *win_data;
203 DRM_DEBUG_KMS("%s\n", __FILE__);
205 for (i = 0; i < WINDOWS_NR; i++) {
206 win_data = &ctx->win_data[i];
207 if (win_data->enabled && (ovl_ops && ovl_ops->commit))
208 ovl_ops->commit(subdrv_dev, i);
211 if (mgr_ops && mgr_ops->commit)
212 mgr_ops->commit(subdrv_dev);
215 static void fimd_commit(struct device *dev)
217 struct fimd_context *ctx = get_fimd_context(dev);
218 struct exynos_drm_panel_info *panel = ctx->panel;
219 struct fb_videomode *timing = &panel->timing;
220 struct fimd_driver_data *driver_data;
221 struct platform_device *pdev = to_platform_device(dev);
224 driver_data = drm_fimd_get_driver_data(pdev);
228 DRM_DEBUG_KMS("%s\n", __FILE__);
230 /* setup polarity values from machine code. */
231 writel(ctx->vidcon1, ctx->regs + driver_data->timing_base + VIDCON1);
233 /* setup vertical timing values. */
234 val = VIDTCON0_VBPD(timing->upper_margin - 1) |
235 VIDTCON0_VFPD(timing->lower_margin - 1) |
236 VIDTCON0_VSPW(timing->vsync_len - 1);
237 writel(val, ctx->regs + driver_data->timing_base + VIDTCON0);
239 /* setup horizontal timing values. */
240 val = VIDTCON1_HBPD(timing->left_margin - 1) |
241 VIDTCON1_HFPD(timing->right_margin - 1) |
242 VIDTCON1_HSPW(timing->hsync_len - 1);
243 writel(val, ctx->regs + driver_data->timing_base + VIDTCON1);
245 /* setup horizontal and vertical display size. */
246 val = VIDTCON2_LINEVAL(timing->yres - 1) |
247 VIDTCON2_HOZVAL(timing->xres - 1);
248 writel(val, ctx->regs + driver_data->timing_base + VIDTCON2);
250 /* setup clock source, clock divider, enable dma. */
252 val &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);
255 val |= VIDCON0_CLKVAL_F(ctx->clkdiv - 1) | VIDCON0_CLKDIR;
257 val &= ~VIDCON0_CLKDIR; /* 1:1 clock */
260 * fields of register with prefix '_F' would be updated
261 * at vsync(same as dma start)
263 val |= VIDCON0_ENVID | VIDCON0_ENVID_F;
264 writel(val, ctx->regs + VIDCON0);
267 static int fimd_enable_vblank(struct device *dev)
269 struct fimd_context *ctx = get_fimd_context(dev);
272 DRM_DEBUG_KMS("%s\n", __FILE__);
277 if (!test_and_set_bit(0, &ctx->irq_flags)) {
278 val = readl(ctx->regs + VIDINTCON0);
280 val |= VIDINTCON0_INT_ENABLE;
281 val |= VIDINTCON0_INT_FRAME;
283 val &= ~VIDINTCON0_FRAMESEL0_MASK;
284 val |= VIDINTCON0_FRAMESEL0_VSYNC;
285 val &= ~VIDINTCON0_FRAMESEL1_MASK;
286 val |= VIDINTCON0_FRAMESEL1_NONE;
288 writel(val, ctx->regs + VIDINTCON0);
294 static void fimd_disable_vblank(struct device *dev)
296 struct fimd_context *ctx = get_fimd_context(dev);
299 DRM_DEBUG_KMS("%s\n", __FILE__);
304 if (test_and_clear_bit(0, &ctx->irq_flags)) {
305 val = readl(ctx->regs + VIDINTCON0);
307 val &= ~VIDINTCON0_INT_FRAME;
308 val &= ~VIDINTCON0_INT_ENABLE;
310 writel(val, ctx->regs + VIDINTCON0);
314 static void fimd_wait_for_vblank(struct device *dev)
316 struct fimd_context *ctx = get_fimd_context(dev);
321 atomic_set(&ctx->wait_vsync_event, 1);
324 * wait for FIMD to signal VSYNC interrupt or return after
325 * timeout which is set to 50ms (refresh rate of 20).
327 if (!wait_event_timeout(ctx->wait_vsync_queue,
328 !atomic_read(&ctx->wait_vsync_event),
330 DRM_DEBUG_KMS("vblank wait timed out.\n");
333 static struct exynos_drm_manager_ops fimd_manager_ops = {
336 .commit = fimd_commit,
337 .enable_vblank = fimd_enable_vblank,
338 .disable_vblank = fimd_disable_vblank,
339 .wait_for_vblank = fimd_wait_for_vblank,
342 static void fimd_win_mode_set(struct device *dev,
343 struct exynos_drm_overlay *overlay)
345 struct fimd_context *ctx = get_fimd_context(dev);
346 struct fimd_win_data *win_data;
348 unsigned long offset;
350 DRM_DEBUG_KMS("%s\n", __FILE__);
353 dev_err(dev, "overlay is NULL\n");
358 if (win == DEFAULT_ZPOS)
359 win = ctx->default_win;
361 if (win < 0 || win > WINDOWS_NR)
364 offset = overlay->fb_x * (overlay->bpp >> 3);
365 offset += overlay->fb_y * overlay->pitch;
367 DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch);
369 win_data = &ctx->win_data[win];
371 win_data->offset_x = overlay->crtc_x;
372 win_data->offset_y = overlay->crtc_y;
373 win_data->ovl_width = overlay->crtc_width;
374 win_data->ovl_height = overlay->crtc_height;
375 win_data->fb_width = overlay->fb_width;
376 win_data->fb_height = overlay->fb_height;
377 win_data->dma_addr = overlay->dma_addr[0] + offset;
378 win_data->vaddr = overlay->vaddr[0] + offset;
379 win_data->bpp = overlay->bpp;
380 win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) *
382 win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3);
384 DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n",
385 win_data->offset_x, win_data->offset_y);
386 DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
387 win_data->ovl_width, win_data->ovl_height);
388 DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n",
389 (unsigned long)win_data->dma_addr,
390 (unsigned long)win_data->vaddr);
391 DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n",
392 overlay->fb_width, overlay->crtc_width);
395 static void fimd_win_set_pixfmt(struct device *dev, unsigned int win)
397 struct fimd_context *ctx = get_fimd_context(dev);
398 struct fimd_win_data *win_data = &ctx->win_data[win];
401 DRM_DEBUG_KMS("%s\n", __FILE__);
405 switch (win_data->bpp) {
407 val |= WINCON0_BPPMODE_1BPP;
408 val |= WINCONx_BITSWP;
409 val |= WINCONx_BURSTLEN_4WORD;
412 val |= WINCON0_BPPMODE_2BPP;
413 val |= WINCONx_BITSWP;
414 val |= WINCONx_BURSTLEN_8WORD;
417 val |= WINCON0_BPPMODE_4BPP;
418 val |= WINCONx_BITSWP;
419 val |= WINCONx_BURSTLEN_8WORD;
422 val |= WINCON0_BPPMODE_8BPP_PALETTE;
423 val |= WINCONx_BURSTLEN_8WORD;
424 val |= WINCONx_BYTSWP;
427 val |= WINCON0_BPPMODE_16BPP_565;
428 val |= WINCONx_HAWSWP;
429 val |= WINCONx_BURSTLEN_16WORD;
432 val |= WINCON0_BPPMODE_24BPP_888;
434 val |= WINCONx_BURSTLEN_16WORD;
437 val |= WINCON1_BPPMODE_28BPP_A4888
438 | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
440 val |= WINCONx_BURSTLEN_16WORD;
443 DRM_DEBUG_KMS("invalid pixel size so using unpacked 24bpp.\n");
445 val |= WINCON0_BPPMODE_24BPP_888;
447 val |= WINCONx_BURSTLEN_16WORD;
451 DRM_DEBUG_KMS("bpp = %d\n", win_data->bpp);
453 writel(val, ctx->regs + WINCON(win));
456 static void fimd_win_set_colkey(struct device *dev, unsigned int win)
458 struct fimd_context *ctx = get_fimd_context(dev);
459 unsigned int keycon0 = 0, keycon1 = 0;
461 DRM_DEBUG_KMS("%s\n", __FILE__);
463 keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F |
464 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
466 keycon1 = WxKEYCON1_COLVAL(0xffffffff);
468 writel(keycon0, ctx->regs + WKEYCON0_BASE(win));
469 writel(keycon1, ctx->regs + WKEYCON1_BASE(win));
472 static void fimd_win_commit(struct device *dev, int zpos)
474 struct fimd_context *ctx = get_fimd_context(dev);
475 struct fimd_win_data *win_data;
477 unsigned long val, alpha, size;
479 DRM_DEBUG_KMS("%s\n", __FILE__);
484 if (win == DEFAULT_ZPOS)
485 win = ctx->default_win;
487 if (win < 0 || win > WINDOWS_NR)
490 win_data = &ctx->win_data[win];
493 * SHADOWCON register is used for enabling timing.
495 * for example, once only width value of a register is set,
496 * if the dma is started then fimd hardware could malfunction so
497 * with protect window setting, the register fields with prefix '_F'
498 * wouldn't be updated at vsync also but updated once unprotect window
502 /* protect windows */
503 val = readl(ctx->regs + SHADOWCON);
504 val |= SHADOWCON_WINx_PROTECT(win);
505 writel(val, ctx->regs + SHADOWCON);
507 /* buffer start address */
508 val = (unsigned long)win_data->dma_addr;
509 writel(val, ctx->regs + VIDWx_BUF_START(win, 0));
511 /* buffer end address */
512 size = win_data->fb_width * win_data->ovl_height * (win_data->bpp >> 3);
513 val = (unsigned long)(win_data->dma_addr + size);
514 writel(val, ctx->regs + VIDWx_BUF_END(win, 0));
516 DRM_DEBUG_KMS("start addr = 0x%lx, end addr = 0x%lx, size = 0x%lx\n",
517 (unsigned long)win_data->dma_addr, val, size);
518 DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
519 win_data->ovl_width, win_data->ovl_height);
522 val = VIDW_BUF_SIZE_OFFSET(win_data->buf_offsize) |
523 VIDW_BUF_SIZE_PAGEWIDTH(win_data->line_size);
524 writel(val, ctx->regs + VIDWx_BUF_SIZE(win, 0));
527 val = VIDOSDxA_TOPLEFT_X(win_data->offset_x) |
528 VIDOSDxA_TOPLEFT_Y(win_data->offset_y);
529 writel(val, ctx->regs + VIDOSD_A(win));
531 val = VIDOSDxB_BOTRIGHT_X(win_data->offset_x +
532 win_data->ovl_width - 1) |
533 VIDOSDxB_BOTRIGHT_Y(win_data->offset_y +
534 win_data->ovl_height - 1);
535 writel(val, ctx->regs + VIDOSD_B(win));
537 DRM_DEBUG_KMS("osd pos: tx = %d, ty = %d, bx = %d, by = %d\n",
538 win_data->offset_x, win_data->offset_y,
539 win_data->offset_x + win_data->ovl_width - 1,
540 win_data->offset_y + win_data->ovl_height - 1);
542 /* hardware window 0 doesn't support alpha channel. */
545 alpha = VIDISD14C_ALPHA1_R(0xf) |
546 VIDISD14C_ALPHA1_G(0xf) |
547 VIDISD14C_ALPHA1_B(0xf);
549 writel(alpha, ctx->regs + VIDOSD_C(win));
553 if (win != 3 && win != 4) {
554 u32 offset = VIDOSD_D(win);
556 offset = VIDOSD_C_SIZE_W0;
557 val = win_data->ovl_width * win_data->ovl_height;
558 writel(val, ctx->regs + offset);
560 DRM_DEBUG_KMS("osd size = 0x%x\n", (unsigned int)val);
563 fimd_win_set_pixfmt(dev, win);
565 /* hardware window 0 doesn't support color key. */
567 fimd_win_set_colkey(dev, win);
570 val = readl(ctx->regs + WINCON(win));
571 val |= WINCONx_ENWIN;
572 writel(val, ctx->regs + WINCON(win));
574 /* Enable DMA channel and unprotect windows */
575 val = readl(ctx->regs + SHADOWCON);
576 val |= SHADOWCON_CHx_ENABLE(win);
577 val &= ~SHADOWCON_WINx_PROTECT(win);
578 writel(val, ctx->regs + SHADOWCON);
580 win_data->enabled = true;
583 static void fimd_win_disable(struct device *dev, int zpos)
585 struct fimd_context *ctx = get_fimd_context(dev);
586 struct fimd_win_data *win_data;
590 DRM_DEBUG_KMS("%s\n", __FILE__);
592 if (win == DEFAULT_ZPOS)
593 win = ctx->default_win;
595 if (win < 0 || win > WINDOWS_NR)
598 win_data = &ctx->win_data[win];
600 if (ctx->suspended) {
601 /* do not resume this window*/
602 win_data->resume = false;
606 /* protect windows */
607 val = readl(ctx->regs + SHADOWCON);
608 val |= SHADOWCON_WINx_PROTECT(win);
609 writel(val, ctx->regs + SHADOWCON);
612 val = readl(ctx->regs + WINCON(win));
613 val &= ~WINCONx_ENWIN;
614 writel(val, ctx->regs + WINCON(win));
616 /* unprotect windows */
617 val = readl(ctx->regs + SHADOWCON);
618 val &= ~SHADOWCON_CHx_ENABLE(win);
619 val &= ~SHADOWCON_WINx_PROTECT(win);
620 writel(val, ctx->regs + SHADOWCON);
622 win_data->enabled = false;
625 static struct exynos_drm_overlay_ops fimd_overlay_ops = {
626 .mode_set = fimd_win_mode_set,
627 .commit = fimd_win_commit,
628 .disable = fimd_win_disable,
631 static struct exynos_drm_manager fimd_manager = {
633 .ops = &fimd_manager_ops,
634 .overlay_ops = &fimd_overlay_ops,
635 .display_ops = &fimd_display_ops,
638 static void fimd_finish_pageflip(struct drm_device *drm_dev, int crtc)
640 struct exynos_drm_private *dev_priv = drm_dev->dev_private;
641 struct drm_pending_vblank_event *e, *t;
645 spin_lock_irqsave(&drm_dev->event_lock, flags);
647 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
649 /* if event's pipe isn't same as crtc then ignore it. */
653 do_gettimeofday(&now);
654 e->event.sequence = 0;
655 e->event.tv_sec = now.tv_sec;
656 e->event.tv_usec = now.tv_usec;
658 list_move_tail(&e->base.link, &e->base.file_priv->event_list);
659 wake_up_interruptible(&e->base.file_priv->event_wait);
660 drm_vblank_put(drm_dev, crtc);
663 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
666 static irqreturn_t fimd_irq_handler(int irq, void *dev_id)
668 struct fimd_context *ctx = (struct fimd_context *)dev_id;
669 struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
670 struct drm_device *drm_dev = subdrv->drm_dev;
671 struct exynos_drm_manager *manager = subdrv->manager;
674 val = readl(ctx->regs + VIDINTCON1);
676 if (val & VIDINTCON1_INT_FRAME)
677 /* VSYNC interrupt */
678 writel(VIDINTCON1_INT_FRAME, ctx->regs + VIDINTCON1);
680 /* check the crtc is detached already from encoder */
681 if (manager->pipe < 0)
684 drm_handle_vblank(drm_dev, manager->pipe);
685 fimd_finish_pageflip(drm_dev, manager->pipe);
687 /* set wait vsync event to zero and wake up queue. */
688 if (atomic_read(&ctx->wait_vsync_event)) {
689 atomic_set(&ctx->wait_vsync_event, 0);
690 DRM_WAKEUP(&ctx->wait_vsync_queue);
696 static int fimd_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
698 DRM_DEBUG_KMS("%s\n", __FILE__);
701 * enable drm irq mode.
702 * - with irq_enabled = 1, we can use the vblank feature.
704 * P.S. note that we wouldn't use drm irq handler but
705 * just specific driver own one instead because
706 * drm framework supports only one irq handler.
708 drm_dev->irq_enabled = 1;
711 * with vblank_disable_allowed = 1, vblank interrupt will be disabled
712 * by drm timer once a current process gives up ownership of
713 * vblank event.(after drm_vblank_put function is called)
715 drm_dev->vblank_disable_allowed = 1;
717 /* attach this sub driver to iommu mapping if supported. */
718 if (is_drm_iommu_supported(drm_dev))
719 drm_iommu_attach_device(drm_dev, dev);
724 static void fimd_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
726 DRM_DEBUG_KMS("%s\n", __FILE__);
728 /* detach this sub driver from iommu mapping if supported. */
729 if (is_drm_iommu_supported(drm_dev))
730 drm_iommu_detach_device(drm_dev, dev);
733 static int fimd_calc_clkdiv(struct fimd_context *ctx,
734 struct fb_videomode *timing)
736 unsigned long clk = clk_get_rate(ctx->lcd_clk);
739 u32 best_framerate = 0;
742 DRM_DEBUG_KMS("%s\n", __FILE__);
744 retrace = timing->left_margin + timing->hsync_len +
745 timing->right_margin + timing->xres;
746 retrace *= timing->upper_margin + timing->vsync_len +
747 timing->lower_margin + timing->yres;
749 /* default framerate is 60Hz */
750 if (!timing->refresh)
751 timing->refresh = 60;
755 for (clkdiv = 1; clkdiv < 0x100; clkdiv++) {
758 /* get best framerate */
759 framerate = clk / clkdiv;
760 tmp = timing->refresh - framerate;
762 best_framerate = framerate;
766 best_framerate = framerate;
767 else if (tmp < (best_framerate - framerate))
768 best_framerate = framerate;
776 static void fimd_clear_win(struct fimd_context *ctx, int win)
780 DRM_DEBUG_KMS("%s\n", __FILE__);
782 writel(0, ctx->regs + WINCON(win));
783 writel(0, ctx->regs + VIDOSD_A(win));
784 writel(0, ctx->regs + VIDOSD_B(win));
785 writel(0, ctx->regs + VIDOSD_C(win));
787 if (win == 1 || win == 2)
788 writel(0, ctx->regs + VIDOSD_D(win));
790 val = readl(ctx->regs + SHADOWCON);
791 val &= ~SHADOWCON_WINx_PROTECT(win);
792 writel(val, ctx->regs + SHADOWCON);
795 static int fimd_clock(struct fimd_context *ctx, bool enable)
797 DRM_DEBUG_KMS("%s\n", __FILE__);
802 ret = clk_enable(ctx->bus_clk);
806 ret = clk_enable(ctx->lcd_clk);
808 clk_disable(ctx->bus_clk);
812 clk_disable(ctx->lcd_clk);
813 clk_disable(ctx->bus_clk);
819 static void fimd_window_suspend(struct device *dev)
821 struct fimd_context *ctx = get_fimd_context(dev);
822 struct fimd_win_data *win_data;
825 for (i = 0; i < WINDOWS_NR; i++) {
826 win_data = &ctx->win_data[i];
827 win_data->resume = win_data->enabled;
828 fimd_win_disable(dev, i);
830 fimd_wait_for_vblank(dev);
833 static void fimd_window_resume(struct device *dev)
835 struct fimd_context *ctx = get_fimd_context(dev);
836 struct fimd_win_data *win_data;
839 for (i = 0; i < WINDOWS_NR; i++) {
840 win_data = &ctx->win_data[i];
841 win_data->enabled = win_data->resume;
842 win_data->resume = false;
846 static int fimd_activate(struct fimd_context *ctx, bool enable)
848 struct device *dev = ctx->subdrv.dev;
852 ret = fimd_clock(ctx, true);
856 ctx->suspended = false;
858 /* if vblank was enabled status, enable it again. */
859 if (test_and_clear_bit(0, &ctx->irq_flags))
860 fimd_enable_vblank(dev);
862 fimd_window_resume(dev);
864 fimd_window_suspend(dev);
866 fimd_clock(ctx, false);
867 ctx->suspended = true;
873 static int __devinit fimd_probe(struct platform_device *pdev)
875 struct device *dev = &pdev->dev;
876 struct fimd_context *ctx;
877 struct exynos_drm_subdrv *subdrv;
878 struct exynos_drm_fimd_pdata *pdata;
879 struct exynos_drm_panel_info *panel;
880 struct resource *res;
884 DRM_DEBUG_KMS("%s\n", __FILE__);
886 pdata = pdev->dev.platform_data;
888 dev_err(dev, "no platform data specified\n");
892 panel = &pdata->panel;
894 dev_err(dev, "panel is null.\n");
898 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
902 ctx->bus_clk = devm_clk_get(dev, "fimd");
903 if (IS_ERR(ctx->bus_clk)) {
904 dev_err(dev, "failed to get bus clock\n");
905 return PTR_ERR(ctx->bus_clk);
908 ctx->lcd_clk = devm_clk_get(dev, "sclk_fimd");
909 if (IS_ERR(ctx->lcd_clk)) {
910 dev_err(dev, "failed to get lcd clock\n");
911 return PTR_ERR(ctx->lcd_clk);
914 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
916 ctx->regs = devm_request_and_ioremap(&pdev->dev, res);
918 dev_err(dev, "failed to map registers\n");
922 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
924 dev_err(dev, "irq request failed.\n");
928 ctx->irq = res->start;
930 ret = devm_request_irq(&pdev->dev, ctx->irq, fimd_irq_handler,
933 dev_err(dev, "irq request failed.\n");
937 ctx->vidcon0 = pdata->vidcon0;
938 ctx->vidcon1 = pdata->vidcon1;
939 ctx->default_win = pdata->default_win;
941 DRM_INIT_WAITQUEUE(&ctx->wait_vsync_queue);
942 atomic_set(&ctx->wait_vsync_event, 0);
944 subdrv = &ctx->subdrv;
947 subdrv->manager = &fimd_manager;
948 subdrv->probe = fimd_subdrv_probe;
949 subdrv->remove = fimd_subdrv_remove;
951 mutex_init(&ctx->lock);
953 platform_set_drvdata(pdev, ctx);
955 pm_runtime_enable(dev);
956 pm_runtime_get_sync(dev);
958 ctx->clkdiv = fimd_calc_clkdiv(ctx, &panel->timing);
959 panel->timing.pixclock = clk_get_rate(ctx->lcd_clk) / ctx->clkdiv;
961 DRM_DEBUG_KMS("pixel clock = %d, clkdiv = %d\n",
962 panel->timing.pixclock, ctx->clkdiv);
964 for (win = 0; win < WINDOWS_NR; win++)
965 fimd_clear_win(ctx, win);
967 exynos_drm_subdrv_register(subdrv);
972 static int __devexit fimd_remove(struct platform_device *pdev)
974 struct device *dev = &pdev->dev;
975 struct fimd_context *ctx = platform_get_drvdata(pdev);
977 DRM_DEBUG_KMS("%s\n", __FILE__);
979 exynos_drm_subdrv_unregister(&ctx->subdrv);
984 clk_disable(ctx->lcd_clk);
985 clk_disable(ctx->bus_clk);
987 pm_runtime_set_suspended(dev);
988 pm_runtime_put_sync(dev);
991 pm_runtime_disable(dev);
996 #ifdef CONFIG_PM_SLEEP
997 static int fimd_suspend(struct device *dev)
999 struct fimd_context *ctx = get_fimd_context(dev);
1002 * do not use pm_runtime_suspend(). if pm_runtime_suspend() is
1003 * called here, an error would be returned by that interface
1004 * because the usage_count of pm runtime is more than 1.
1006 if (!pm_runtime_suspended(dev))
1007 return fimd_activate(ctx, false);
1012 static int fimd_resume(struct device *dev)
1014 struct fimd_context *ctx = get_fimd_context(dev);
1017 * if entered to sleep when lcd panel was on, the usage_count
1018 * of pm runtime would still be 1 so in this case, fimd driver
1019 * should be on directly not drawing on pm runtime interface.
1021 if (pm_runtime_suspended(dev)) {
1024 ret = fimd_activate(ctx, true);
1029 * in case of dpms on(standby), fimd_apply function will
1030 * be called by encoder's dpms callback to update fimd's
1031 * registers but in case of sleep wakeup, it's not.
1032 * so fimd_apply function should be called at here.
1041 #ifdef CONFIG_PM_RUNTIME
1042 static int fimd_runtime_suspend(struct device *dev)
1044 struct fimd_context *ctx = get_fimd_context(dev);
1046 DRM_DEBUG_KMS("%s\n", __FILE__);
1048 return fimd_activate(ctx, false);
1051 static int fimd_runtime_resume(struct device *dev)
1053 struct fimd_context *ctx = get_fimd_context(dev);
1055 DRM_DEBUG_KMS("%s\n", __FILE__);
1057 return fimd_activate(ctx, true);
1061 static struct platform_device_id fimd_driver_ids[] = {
1063 .name = "exynos4-fb",
1064 .driver_data = (unsigned long)&exynos4_fimd_driver_data,
1066 .name = "exynos5-fb",
1067 .driver_data = (unsigned long)&exynos5_fimd_driver_data,
1071 MODULE_DEVICE_TABLE(platform, fimd_driver_ids);
1073 static const struct dev_pm_ops fimd_pm_ops = {
1074 SET_SYSTEM_SLEEP_PM_OPS(fimd_suspend, fimd_resume)
1075 SET_RUNTIME_PM_OPS(fimd_runtime_suspend, fimd_runtime_resume, NULL)
1078 struct platform_driver fimd_driver = {
1079 .probe = fimd_probe,
1080 .remove = __devexit_p(fimd_remove),
1081 .id_table = fimd_driver_ids,
1083 .name = "exynos4-fb",
1084 .owner = THIS_MODULE,