path: root/drivers/staging/gma500/mdfld_intel_display.c

/*
 * Copyright © 2006-2011 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *	Eric Anholt <eric@anholt.net>
 */

#include "framebuffer.h"
#include "psb_intel_display.h"
#include "mdfld_dsi_dbi.h"
#include "mdfld_dsi_dpi.h"
#include "mdfld_dsi_dbi_dpu.h"

#include <linux/pm_runtime.h>

#ifdef MIN
#undef MIN
#endif

#define MIN(x, y) (((x) < (y)) ? (x) : (y))

/* Hardcoded currently */
static int ksel = KSEL_CRYSTAL_19;

extern void mdfld_save_display(struct drm_device *dev);
extern bool gbgfxsuspended;

struct psb_intel_range_t {
	int min, max;
};

struct mdfld_limit_t {
	struct psb_intel_range_t dot, m, p1;
};

struct mdfld_intel_clock_t {
	/* given values */
	int n;
	int m1, m2;
	int p1, p2;
	/* derived values */
	int dot;
	int vco;
	int m;
	int p;
};



#define COUNT_MAX 0x10000000

void mdfldWaitForPipeDisable(struct drm_device *dev, int pipe)
{
	int count, temp;
	u32 pipeconf_reg = PIPEACONF;
	
	switch (pipe) {
	case 0:
		break;
	case 1:
		pipeconf_reg = PIPEBCONF;
		break;
	case 2:
		pipeconf_reg = PIPECCONF;
		break;
	default:
		DRM_ERROR("Illegal Pipe Number. \n");
		return;
	}

	/* FIXME JLIU7_PO */
	psb_intel_wait_for_vblank(dev);
	return;

	/* Wait for for the pipe disable to take effect. */
	for (count = 0; count < COUNT_MAX; count++) {
		temp = REG_READ(pipeconf_reg);
		if ((temp & PIPEACONF_PIPE_STATE) == 0)
			break;
	}
}

void mdfldWaitForPipeEnable(struct drm_device *dev, int pipe)
{
	int count, temp;
	u32 pipeconf_reg = PIPEACONF;
	
	switch (pipe) {
	case 0:
		break;
	case 1:
		pipeconf_reg = PIPEBCONF;
		break;
	case 2:
		pipeconf_reg = PIPECCONF;
		break;
	default:
		dev_err(dev->dev, "Illegal Pipe Number.\n");
		return;
	}

	/* FIXME JLIU7_PO */
	psb_intel_wait_for_vblank(dev);
	return;

	/* Wait for for the pipe enable to take effect. */
	for (count = 0; count < COUNT_MAX; count++) {
		temp = REG_READ(pipeconf_reg);
		if ((temp & PIPEACONF_PIPE_STATE) == 1)
			break;
	}
}


static int mdfld_intel_crtc_cursor_set(struct drm_crtc *crtc,
				 struct drm_file *file_priv,
				 uint32_t handle,
				 uint32_t width, uint32_t height)
{
	struct drm_device *dev = crtc->dev;
	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
	int pipe = psb_intel_crtc->pipe;
	uint32_t control = CURACNTR;
	uint32_t base = CURABASE;
	uint32_t temp;
	size_t addr = 0;
	struct gtt_range *gt;
	struct drm_gem_object *obj;
	int ret;

	switch (pipe) {
	case 0:
		break;
	case 1:
		control = CURBCNTR;
		base = CURBBASE;
		break;
	case 2:
		control = CURCCNTR;
		base = CURCBASE;
		break;
	default:
		dev_err(dev->dev, "Illegal Pipe Number. \n");
		return -EINVAL;
	}
	
#if 1 /* FIXME_JLIU7 can't enalbe cursorB/C HW issue. need to remove after HW fix */
	if (pipe != 0)
		return 0;
#endif 
	/* if we want to turn of the cursor ignore width and height */
	if (!handle) {
		dev_dbg(dev->dev, "cursor off\n");
		/* turn off the cursor */
		temp = 0;
		temp |= CURSOR_MODE_DISABLE;

		if (gma_power_begin(dev, true)) {
			REG_WRITE(control, temp);
			REG_WRITE(base, 0);
			gma_power_end(dev);
		}
		/* Unpin the old GEM object */
		if (psb_intel_crtc->cursor_obj) {
			gt = container_of(psb_intel_crtc->cursor_obj,
							struct gtt_range, gem);
			psb_gtt_unpin(gt);
			drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
			psb_intel_crtc->cursor_obj = NULL;
		}
		return 0;
	}

	/* Currently we only support 64x64 cursors */
	if (width != 64 || height != 64) {
		DRM_ERROR("we currently only support 64x64 cursors\n");
		return -EINVAL;
	}

	obj = drm_gem_object_lookup(dev, file_priv, handle);
	if (!obj)
		return -ENOENT;

	if (obj->size < width * height * 4) {
		dev_dbg(dev->dev, "buffer is to small\n");
		return -ENOMEM;
	}

	gt = container_of(obj, struct gtt_range, gem);

	/* Pin the memory into the GTT */
	ret = psb_gtt_pin(gt);
	if (ret) {
		dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle);
		return ret;
	}


	addr = gt->offset;	/* Or resource.start ??? */

	psb_intel_crtc->cursor_addr = addr;

	temp = 0;
	/* set the pipe for the cursor */
	temp |= (pipe << 28);
	temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;

	if (gma_power_begin(dev, true)) {
		REG_WRITE(control, temp);
		REG_WRITE(base, addr);
		gma_power_end(dev);
	}
	/* unpin the old GEM object */
	if (psb_intel_crtc->cursor_obj) {
		gt = container_of(psb_intel_crtc->cursor_obj,
							struct gtt_range, gem);
		psb_gtt_unpin(gt);
		drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
		psb_intel_crtc->cursor_obj = obj;
	}
	return 0;
}

static int mdfld_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
	struct drm_device *dev = crtc->dev;
	struct drm_psb_private * dev_priv = (struct drm_psb_private *)dev->dev_private;
	struct mdfld_dbi_dpu_info *dpu_info = dev_priv->dbi_dpu_info;
	struct psb_drm_dpu_rect rect;
	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
	int pipe = psb_intel_crtc->pipe;
	uint32_t pos = CURAPOS;
	uint32_t base = CURABASE;
	uint32_t temp = 0;
	uint32_t addr;

	switch (pipe) {
	case 0:
		if (dpu_info) {
			rect.x = x;
			rect.y = y;
		
			mdfld_dbi_dpu_report_damage(dev, MDFLD_CURSORA, &rect);
			mdfld_dpu_exit_dsr(dev);
		} else if (!(dev_priv->dsr_fb_update & MDFLD_DSR_CURSOR_0))
			mdfld_dsi_dbi_exit_dsr(dev, MDFLD_DSR_CURSOR_0);
		break;
	case 1:
		pos = CURBPOS;
		base = CURBBASE;
		break;
	case 2:
		if (dpu_info) {
			mdfld_dbi_dpu_report_damage(dev, MDFLD_CURSORC, &rect);
			mdfld_dpu_exit_dsr(dev);
		} else if (!(dev_priv->dsr_fb_update & MDFLD_DSR_CURSOR_2))
			mdfld_dsi_dbi_exit_dsr(dev, MDFLD_DSR_CURSOR_2);
		pos = CURCPOS;
		base = CURCBASE;
		break;
	default:
		DRM_ERROR("Illegal Pipe Number. \n");
		return -EINVAL;
	}
		
#if 1 /* FIXME_JLIU7 can't enable cursorB/C HW issue. need to remove after HW fix */
	if (pipe != 0)
		return 0;
#endif 
	if (x < 0) {
		temp |= (CURSOR_POS_SIGN << CURSOR_X_SHIFT);
		x = -x;
	}
	if (y < 0) {
		temp |= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT);
		y = -y;
	}

	temp |= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT);
	temp |= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);

	addr = psb_intel_crtc->cursor_addr;

	if (gma_power_begin(dev, true)) {
		REG_WRITE(pos, temp);
		REG_WRITE(base, addr);
		gma_power_end(dev);
	}

	return 0;
}

const struct drm_crtc_funcs mdfld_intel_crtc_funcs = {
	.cursor_set = mdfld_intel_crtc_cursor_set,
	.cursor_move = mdfld_intel_crtc_cursor_move,
	.gamma_set = psb_intel_crtc_gamma_set,
	.set_config = drm_crtc_helper_set_config,
	.destroy = psb_intel_crtc_destroy,
};

static struct drm_device globle_dev;

void mdfld__intel_plane_set_alpha(int enable)
{
	struct drm_device *dev = &globle_dev;
	int dspcntr_reg = DSPACNTR;
	u32 dspcntr;

	dspcntr = REG_READ(dspcntr_reg);

	if (enable) {
		dspcntr &= ~DISPPLANE_32BPP_NO_ALPHA;
		dspcntr |= DISPPLANE_32BPP;
	} else {
		dspcntr &= ~DISPPLANE_32BPP;
		dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
	}

	REG_WRITE(dspcntr_reg, dspcntr);
}

int mdfld__intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb)
{
	struct drm_device *dev = crtc->dev;
	/* struct drm_i915_master_private *master_priv; */
	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
	struct psb_framebuffer *psbfb = to_psb_fb(crtc->fb);
	int pipe = psb_intel_crtc->pipe;
	unsigned long start, offset;
	int dsplinoff = DSPALINOFF;
	int dspsurf = DSPASURF;
	int dspstride = DSPASTRIDE;
	int dspcntr_reg = DSPACNTR;
	u32 dspcntr;
	int ret = 0;

	memcpy(&globle_dev, dev, sizeof(struct drm_device));

	if (!gma_power_begin(dev, true))
		return 0;

	/* no fb bound */
	if (!crtc->fb) {
		dev_err(dev->dev, "No FB bound\n");
		goto psb_intel_pipe_cleaner;
	}

	switch (pipe) {
	case 0:
		dsplinoff = DSPALINOFF;
		break;
	case 1:
		dsplinoff = DSPBLINOFF;
		dspsurf = DSPBSURF;
		dspstride = DSPBSTRIDE;
		dspcntr_reg = DSPBCNTR;
		break;
	case 2:
		dsplinoff = DSPCLINOFF;
		dspsurf = DSPCSURF;
		dspstride = DSPCSTRIDE;
		dspcntr_reg = DSPCCNTR;
		break;
	default:
		dev_err(dev->dev, "Illegal Pipe Number.\n");
		return -EINVAL;
	}

	ret = psb_gtt_pin(psbfb->gtt);
	if (ret < 0)
	        goto psb_intel_pipe_set_base_exit;

	start = psbfb->gtt->offset;
	offset = y * crtc->fb->pitches[0] + x * (crtc->fb->bits_per_pixel / 8);

	REG_WRITE(dspstride, crtc->fb->pitches[0]);
	dspcntr = REG_READ(dspcntr_reg);
	dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;

	switch (crtc->fb->bits_per_pixel) {
	case 8:
		dspcntr |= DISPPLANE_8BPP;
		break;
	case 16:
		if (crtc->fb->depth == 15)
			dspcntr |= DISPPLANE_15_16BPP;
		else
			dspcntr |= DISPPLANE_16BPP;
		break;
	case 24:
	case 32:
		dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
		break;
	default:
		dev_err(dev->dev, "Unknown color depth\n");
		ret = -EINVAL;
		goto psb_intel_pipe_set_base_exit;
	}
	REG_WRITE(dspcntr_reg, dspcntr);

	dev_dbg(dev->dev, "Writing base %08lX %08lX %d %d\n",
	                                        start, offset, x, y);

	REG_WRITE(dsplinoff, offset);
	REG_READ(dsplinoff);
	REG_WRITE(dspsurf, start);
	REG_READ(dspsurf);

psb_intel_pipe_cleaner:
	/* If there was a previous display we can now unpin it */
	if (old_fb)
		psb_gtt_unpin(to_psb_fb(old_fb)->gtt);

psb_intel_pipe_set_base_exit:
	gma_power_end(dev);
	return ret;
}

/**
 * Disable the pipe, plane and pll.
 *
 */
void mdfld_disable_crtc (struct drm_device *dev, int pipe)
{
	int dpll_reg = MRST_DPLL_A;
	int dspcntr_reg = DSPACNTR;
	int dspbase_reg = MRST_DSPABASE;
	int pipeconf_reg = PIPEACONF;
	u32 gen_fifo_stat_reg = GEN_FIFO_STAT_REG;
	u32 temp;

	switch (pipe) {
	case 0:
		break;
	case 1:
		dpll_reg = MDFLD_DPLL_B;
		dspcntr_reg = DSPBCNTR;
		dspbase_reg = DSPBSURF;
		pipeconf_reg = PIPEBCONF;
		break;
	case 2:
		dpll_reg = MRST_DPLL_A;
		dspcntr_reg = DSPCCNTR;
		dspbase_reg = MDFLD_DSPCBASE;
		pipeconf_reg = PIPECCONF;
		gen_fifo_stat_reg = GEN_FIFO_STAT_REG + MIPIC_REG_OFFSET;
		break;
	default:
		dev_err(dev->dev, "Illegal Pipe Number. \n");
		return;
	}

	if (pipe != 1)
		mdfld_dsi_gen_fifo_ready (dev, gen_fifo_stat_reg, HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY);

	/* Disable display plane */
	temp = REG_READ(dspcntr_reg);
	if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
		REG_WRITE(dspcntr_reg,
			  temp & ~DISPLAY_PLANE_ENABLE);
		/* Flush the plane changes */
		REG_WRITE(dspbase_reg, REG_READ(dspbase_reg));
		REG_READ(dspbase_reg);
	}

	/* FIXME_JLIU7 MDFLD_PO revisit */
	/* Wait for vblank for the disable to take effect */
/* MDFLD_PO_JLIU7		psb_intel_wait_for_vblank(dev); */

	/* Next, disable display pipes */
	temp = REG_READ(pipeconf_reg);
	if ((temp & PIPEACONF_ENABLE) != 0) {
		temp &= ~PIPEACONF_ENABLE;
		temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF;
		REG_WRITE(pipeconf_reg, temp);
		REG_READ(pipeconf_reg);

		/* Wait for for the pipe disable to take effect. */
		mdfldWaitForPipeDisable(dev, pipe);
	}

	temp = REG_READ(dpll_reg);
	if (temp & DPLL_VCO_ENABLE) {
		if (((pipe != 1) && !((REG_READ(PIPEACONF) | REG_READ(PIPECCONF)) & PIPEACONF_ENABLE))
				|| (pipe == 1)){
			temp &= ~(DPLL_VCO_ENABLE);
			REG_WRITE(dpll_reg, temp);
			REG_READ(dpll_reg);
			/* Wait for the clocks to turn off. */
			/* FIXME_MDFLD PO may need more delay */
			udelay(500);

			if (!(temp & MDFLD_PWR_GATE_EN)) {
				/* gating power of DPLL */
				REG_WRITE(dpll_reg, temp | MDFLD_PWR_GATE_EN);
				/* FIXME_MDFLD PO - change 500 to 1 after PO */
				udelay(5000);
			}
		}
	}

}

/**
 * Sets the power management mode of the pipe and plane.
 *
 * This code should probably grow support for turning the cursor off and back
 * on appropriately at the same time as we're turning the pipe off/on.
 */
static void mdfld_crtc_dpms(struct drm_crtc *crtc, int mode)
{
	struct drm_device *dev = crtc->dev;
	struct drm_psb_private *dev_priv = dev->dev_private;
	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
	int pipe = psb_intel_crtc->pipe;
	int dpll_reg = MRST_DPLL_A;
	int dspcntr_reg = DSPACNTR;
	int dspbase_reg = MRST_DSPABASE;
	int pipeconf_reg = PIPEACONF;
	u32 pipestat_reg = PIPEASTAT;
	u32 gen_fifo_stat_reg = GEN_FIFO_STAT_REG;
	u32 pipeconf = dev_priv->pipeconf;
	u32 dspcntr = dev_priv->dspcntr;
	u32 mipi_enable_reg = MIPIA_DEVICE_READY_REG;
	u32 temp;
	bool enabled;
	int timeout = 0;

	if (!gma_power_begin(dev, true))
		return;

	 /* Ignore if system is already in DSR and in suspended state. */
	if(/*gbgfxsuspended */0 && dev_priv->dispstatus == false && mode == 3){
	    if(dev_priv->rpm_enabled && pipe == 1){
	//          dev_priv->is_mipi_on = false;
	          pm_request_idle(&dev->pdev->dev);
	    }
	    return;
	}else if(mode == 0) {
		//do not need to set gbdispstatus=true in crtc.
		//this will be set in encoder such as mdfld_dsi_dbi_dpms
	    //gbdispstatus = true;
	}

/* FIXME_JLIU7 MDFLD_PO replaced w/ the following function */
/* mdfld_dbi_dpms (struct drm_device *dev, int pipe, bool enabled) */

	switch (pipe) {
	case 0:
		break;
	case 1:
		dpll_reg = DPLL_B;
		dspcntr_reg = DSPBCNTR;
		dspbase_reg = MRST_DSPBBASE;
		pipeconf_reg = PIPEBCONF;
		pipeconf = dev_priv->pipeconf1;
		dspcntr = dev_priv->dspcntr1;
		dpll_reg = MDFLD_DPLL_B;
		break;
	case 2:
		dpll_reg = MRST_DPLL_A;
		dspcntr_reg = DSPCCNTR;
		dspbase_reg = MDFLD_DSPCBASE;
		pipeconf_reg = PIPECCONF;
		pipestat_reg = PIPECSTAT;
		pipeconf = dev_priv->pipeconf2;
		dspcntr = dev_priv->dspcntr2;
		gen_fifo_stat_reg = GEN_FIFO_STAT_REG + MIPIC_REG_OFFSET;
		mipi_enable_reg = MIPIA_DEVICE_READY_REG + MIPIC_REG_OFFSET;
		break;
	default:
		dev_err(dev->dev, "Illegal Pipe Number.\n");
		return;
	}

	/* XXX: When our outputs are all unaware of DPMS modes other than off
	 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
	 */
	switch (mode) {
	case DRM_MODE_DPMS_ON:
	case DRM_MODE_DPMS_STANDBY:
	case DRM_MODE_DPMS_SUSPEND:
		/* Enable the DPLL */
		temp = REG_READ(dpll_reg);

		if ((temp & DPLL_VCO_ENABLE) == 0) {
			/* When ungating power of DPLL, needs to wait 0.5us before enable the VCO */
			if (temp & MDFLD_PWR_GATE_EN) {
				temp &= ~MDFLD_PWR_GATE_EN;
				REG_WRITE(dpll_reg, temp);
				/* FIXME_MDFLD PO - change 500 to 1 after PO */
				udelay(500);
			}

			REG_WRITE(dpll_reg, temp);
			REG_READ(dpll_reg);
			/* FIXME_MDFLD PO - change 500 to 1 after PO */
			udelay(500);
			
			REG_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
			REG_READ(dpll_reg);

			/**
			 * wait for DSI PLL to lock
			 * NOTE: only need to poll status of pipe 0 and pipe 1,
			 * since both MIPI pipes share the same PLL.
			 */
			while ((pipe != 2) && (timeout < 20000) && !(REG_READ(pipeconf_reg) & PIPECONF_DSIPLL_LOCK)) {
				udelay(150);
				timeout ++;
			}
		}

		/* Enable the plane */
		temp = REG_READ(dspcntr_reg);
		if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
			REG_WRITE(dspcntr_reg,
				temp | DISPLAY_PLANE_ENABLE);
			/* Flush the plane changes */
			REG_WRITE(dspbase_reg, REG_READ(dspbase_reg));
		}

		/* Enable the pipe */
		temp = REG_READ(pipeconf_reg);
		if ((temp & PIPEACONF_ENABLE) == 0) {
			REG_WRITE(pipeconf_reg, pipeconf);

			/* Wait for for the pipe enable to take effect. */
			mdfldWaitForPipeEnable(dev, pipe);
		}

		/*workaround for sighting 3741701 Random X blank display*/
		/*perform w/a in video mode only on pipe A or C*/
		if ((pipe == 0 || pipe == 2) &&
			(mdfld_panel_dpi(dev) == true)) {
			REG_WRITE(pipestat_reg, REG_READ(pipestat_reg));
			msleep(100);
			if(PIPE_VBLANK_STATUS & REG_READ(pipestat_reg)) {
				printk(KERN_ALERT "OK");
			} else {
				printk(KERN_ALERT "STUCK!!!!");
				/*shutdown controller*/
				temp = REG_READ(dspcntr_reg);
				REG_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
				REG_WRITE(dspbase_reg, REG_READ(dspbase_reg));
				/*mdfld_dsi_dpi_shut_down(dev, pipe);*/
				REG_WRITE(0xb048, 1);
				msleep(100);
				temp = REG_READ(pipeconf_reg);
				temp &= ~PIPEACONF_ENABLE;
				REG_WRITE(pipeconf_reg, temp);
				msleep(100); /*wait for pipe disable*/
			/*printk(KERN_ALERT "70008 is %x\n", REG_READ(0x70008));
			printk(KERN_ALERT "b074 is %x\n", REG_READ(0xb074));*/
				REG_WRITE(mipi_enable_reg, 0);
				msleep(100);
			printk(KERN_ALERT "70008 is %x\n", REG_READ(0x70008));
			printk(KERN_ALERT "b074 is %x\n", REG_READ(0xb074));
				REG_WRITE(0xb004, REG_READ(0xb004));
				/* try to bring the controller back up again*/
				REG_WRITE(mipi_enable_reg, 1);
				temp = REG_READ(dspcntr_reg);
				REG_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
				REG_WRITE(dspbase_reg, REG_READ(dspbase_reg));
				/*mdfld_dsi_dpi_turn_on(dev, pipe);*/
				REG_WRITE(0xb048, 2);
				msleep(100);
				temp = REG_READ(pipeconf_reg);
				temp |= PIPEACONF_ENABLE;
				REG_WRITE(pipeconf_reg, temp);
			}
		}

		psb_intel_crtc_load_lut(crtc);

		/* Give the overlay scaler a chance to enable
		   if it's on this pipe */
		/* psb_intel_crtc_dpms_video(crtc, true); TODO */

		break;
	case DRM_MODE_DPMS_OFF:
		/* Give the overlay scaler a chance to disable
		 * if it's on this pipe */
		/* psb_intel_crtc_dpms_video(crtc, FALSE); TODO */
		if (pipe != 1)
			mdfld_dsi_gen_fifo_ready (dev, gen_fifo_stat_reg, HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY);

		/* Disable the VGA plane that we never use */
		REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);

		/* Disable display plane */
		temp = REG_READ(dspcntr_reg);
		if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
			REG_WRITE(dspcntr_reg,
				  temp & ~DISPLAY_PLANE_ENABLE);
			/* Flush the plane changes */
			REG_WRITE(dspbase_reg, REG_READ(dspbase_reg));
			REG_READ(dspbase_reg);
		}

		/* FIXME_JLIU7 MDFLD_PO revisit */
		/* Wait for vblank for the disable to take effect */
// MDFLD_PO_JLIU7		psb_intel_wait_for_vblank(dev);

		/* Next, disable display pipes */
		temp = REG_READ(pipeconf_reg);
		if ((temp & PIPEACONF_ENABLE) != 0) {
			temp &= ~PIPEACONF_ENABLE;
			temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF;
			REG_WRITE(pipeconf_reg, temp);
//			REG_WRITE(pipeconf_reg, 0);
			REG_READ(pipeconf_reg);

			/* Wait for for the pipe disable to take effect. */
			mdfldWaitForPipeDisable(dev, pipe);
		}

		temp = REG_READ(dpll_reg);
		if (temp & DPLL_VCO_ENABLE) {
			if (((pipe != 1) && !((REG_READ(PIPEACONF) | REG_READ(PIPECCONF)) & PIPEACONF_ENABLE))
					|| (pipe == 1)){
				temp &= ~(DPLL_VCO_ENABLE);
				REG_WRITE(dpll_reg, temp);
				REG_READ(dpll_reg);
				/* Wait for the clocks to turn off. */
				/* FIXME_MDFLD PO may need more delay */
				udelay(500);
#if 0 /* MDFLD_PO_JLIU7 */	
		if (!(temp & MDFLD_PWR_GATE_EN)) {
			/* gating power of DPLL */
			REG_WRITE(dpll_reg, temp | MDFLD_PWR_GATE_EN);
			/* FIXME_MDFLD PO - change 500 to 1 after PO */
			udelay(5000);
		}
#endif  /* MDFLD_PO_JLIU7 */	
			}
		}
		break;
	}

	enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;

#if 0				/* JB: Add vblank support later */
	if (enabled)
		dev_priv->vblank_pipe |= (1 << pipe);
	else
		dev_priv->vblank_pipe &= ~(1 << pipe);
#endif

	gma_power_end(dev);
}


#define MDFLD_LIMT_DPLL_19	    0
#define MDFLD_LIMT_DPLL_25	    1
#define MDFLD_LIMT_DPLL_83	    2
#define MDFLD_LIMT_DPLL_100	    3
#define MDFLD_LIMT_DSIPLL_19	    4
#define MDFLD_LIMT_DSIPLL_25	    5
#define MDFLD_LIMT_DSIPLL_83	    6
#define MDFLD_LIMT_DSIPLL_100	    7

#define MDFLD_DOT_MIN		  19750  /* FIXME_MDFLD JLIU7 need to find out  min & max for MDFLD */
#define MDFLD_DOT_MAX		  120000
#define MDFLD_DPLL_M_MIN_19	    113
#define MDFLD_DPLL_M_MAX_19	    155
#define MDFLD_DPLL_P1_MIN_19	    2
#define MDFLD_DPLL_P1_MAX_19	    10
#define MDFLD_DPLL_M_MIN_25	    101
#define MDFLD_DPLL_M_MAX_25	    130
#define MDFLD_DPLL_P1_MIN_25	    2
#define MDFLD_DPLL_P1_MAX_25	    10
#define MDFLD_DPLL_M_MIN_83	    64
#define MDFLD_DPLL_M_MAX_83	    64
#define MDFLD_DPLL_P1_MIN_83	    2
#define MDFLD_DPLL_P1_MAX_83	    2
#define MDFLD_DPLL_M_MIN_100	    64
#define MDFLD_DPLL_M_MAX_100	    64
#define MDFLD_DPLL_P1_MIN_100	    2
#define MDFLD_DPLL_P1_MAX_100	    2
#define MDFLD_DSIPLL_M_MIN_19	    131
#define MDFLD_DSIPLL_M_MAX_19	    175
#define MDFLD_DSIPLL_P1_MIN_19	    3
#define MDFLD_DSIPLL_P1_MAX_19	    8
#define MDFLD_DSIPLL_M_MIN_25	    97
#define MDFLD_DSIPLL_M_MAX_25	    140
#define MDFLD_DSIPLL_P1_MIN_25	    3
#define MDFLD_DSIPLL_P1_MAX_25	    9
#define MDFLD_DSIPLL_M_MIN_83	    33
#define MDFLD_DSIPLL_M_MAX_83	    92
#define MDFLD_DSIPLL_P1_MIN_83	    2
#define MDFLD_DSIPLL_P1_MAX_83	    3
#define MDFLD_DSIPLL_M_MIN_100	    97
#define MDFLD_DSIPLL_M_MAX_100	    140
#define MDFLD_DSIPLL_P1_MIN_100	    3
#define MDFLD_DSIPLL_P1_MAX_100	    9

static const struct mdfld_limit_t mdfld_limits[] = {
	{			/* MDFLD_LIMT_DPLL_19 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DPLL_M_MIN_19, .max = MDFLD_DPLL_M_MAX_19},
	 .p1 = {.min = MDFLD_DPLL_P1_MIN_19, .max = MDFLD_DPLL_P1_MAX_19},
	 },
	{			/* MDFLD_LIMT_DPLL_25 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DPLL_M_MIN_25, .max = MDFLD_DPLL_M_MAX_25},
	 .p1 = {.min = MDFLD_DPLL_P1_MIN_25, .max = MDFLD_DPLL_P1_MAX_25},
	 },
	{			/* MDFLD_LIMT_DPLL_83 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DPLL_M_MIN_83, .max = MDFLD_DPLL_M_MAX_83},
	 .p1 = {.min = MDFLD_DPLL_P1_MIN_83, .max = MDFLD_DPLL_P1_MAX_83},
	 },
	{			/* MDFLD_LIMT_DPLL_100 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DPLL_M_MIN_100, .max = MDFLD_DPLL_M_MAX_100},
	 .p1 = {.min = MDFLD_DPLL_P1_MIN_100, .max = MDFLD_DPLL_P1_MAX_100},
	 },
	{			/* MDFLD_LIMT_DSIPLL_19 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DSIPLL_M_MIN_19, .max = MDFLD_DSIPLL_M_MAX_19},
	 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_19, .max = MDFLD_DSIPLL_P1_MAX_19},
	 },
	{			/* MDFLD_LIMT_DSIPLL_25 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DSIPLL_M_MIN_25, .max = MDFLD_DSIPLL_M_MAX_25},
	 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_25, .max = MDFLD_DSIPLL_P1_MAX_25},
	 },
	{			/* MDFLD_LIMT_DSIPLL_83 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DSIPLL_M_MIN_83, .max = MDFLD_DSIPLL_M_MAX_83},
	 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_83, .max = MDFLD_DSIPLL_P1_MAX_83},
	 },
	{			/* MDFLD_LIMT_DSIPLL_100 */
	 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
	 .m = {.min = MDFLD_DSIPLL_M_MIN_100, .max = MDFLD_DSIPLL_M_MAX_100},
	 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_100, .max = MDFLD_DSIPLL_P1_MAX_100},
	 },
};

#define MDFLD_M_MIN	    21
#define MDFLD_M_MAX	    180
static const u32 mdfld_m_converts[] = {
/* M configuration table from 9-bit LFSR table */
	224, 368, 440, 220, 366, 439, 219, 365, 182, 347, /* 21 - 30 */
	173, 342, 171, 85, 298, 149, 74, 37, 18, 265,   /* 31 - 40 */
	388, 194, 353, 432, 216, 108, 310, 155, 333, 166, /* 41 - 50 */
	83, 41, 276, 138, 325, 162, 337, 168, 340, 170, /* 51 - 60 */
	341, 426, 469, 234, 373, 442, 221, 110, 311, 411, /* 61 - 70 */
	461, 486, 243, 377, 188, 350, 175, 343, 427, 213, /* 71 - 80 */
	106, 53, 282, 397, 354, 227, 113, 56, 284, 142, /* 81 - 90 */
	71, 35, 273, 136, 324, 418, 465, 488, 500, 506, /* 91 - 100 */
	253, 126, 63, 287, 399, 455, 483, 241, 376, 444, /* 101 - 110 */
	478, 495, 503, 251, 381, 446, 479, 239, 375, 443, /* 111 - 120 */
	477, 238, 119, 315, 157, 78, 295, 147, 329, 420, /* 121 - 130 */
	210, 105, 308, 154, 77, 38, 275, 137, 68, 290, /* 131 - 140 */
	145, 328, 164, 82, 297, 404, 458, 485, 498, 249, /* 141 - 150 */
	380, 190, 351, 431, 471, 235, 117, 314, 413, 206, /* 151 - 160 */
	103, 51, 25, 12, 262, 387, 193, 96, 48, 280, /* 161 - 170 */
	396, 198, 99, 305, 152, 76, 294, 403, 457, 228, /* 171 - 180 */
};

static const struct mdfld_limit_t *mdfld_limit(struct drm_crtc *crtc)
{
	const struct mdfld_limit_t *limit = NULL;
	struct drm_device *dev = crtc->dev;
	struct drm_psb_private *dev_priv = dev->dev_private;

	if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_MIPI)
	    || psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_MIPI2)) {
		if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19))
			limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_19];
		else if (ksel == KSEL_BYPASS_25) 
			limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_25];
		else if ((ksel == KSEL_BYPASS_83_100) && (dev_priv->core_freq == 166))
			limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_83];
		else if ((ksel == KSEL_BYPASS_83_100) &&
			 (dev_priv->core_freq == 100 || dev_priv->core_freq == 200))
			limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_100];
	} else if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
		if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19))
			limit = &mdfld_limits[MDFLD_LIMT_DPLL_19];
		else if (ksel == KSEL_BYPASS_25) 
			limit = &mdfld_limits[MDFLD_LIMT_DPLL_25];
		else if ((ksel == KSEL_BYPASS_83_100) && (dev_priv->core_freq == 166))
			limit = &mdfld_limits[MDFLD_LIMT_DPLL_83];
		else if ((ksel == KSEL_BYPASS_83_100) &&
			 (dev_priv->core_freq == 100 || dev_priv->core_freq == 200))
			limit = &mdfld_limits[MDFLD_LIMT_DPLL_100];
	} else {
		limit = NULL;
		dev_err(dev->dev, "mdfld_limit Wrong display type.\n");
	}

	return limit;
}

/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
static void mdfld_clock(int refclk, struct mdfld_intel_clock_t *clock)
{
	clock->dot = (refclk * clock->m) / clock->p1;
}

/**
 * Returns a set of divisors for the desired target clock with the given refclk,
 * or FALSE.  Divisor values are the actual divisors for
 */
static bool
mdfldFindBestPLL(struct drm_crtc *crtc, int target, int refclk,
		struct mdfld_intel_clock_t *best_clock)
{
	struct mdfld_intel_clock_t clock;
	const struct mdfld_limit_t *limit = mdfld_limit(crtc);
	int err = target;

	memset(best_clock, 0, sizeof(*best_clock));

	for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) {
		for (clock.p1 = limit->p1.min; clock.p1 <= limit->p1.max;
		     clock.p1++) {
			int this_err;

			mdfld_clock(refclk, &clock);

			this_err = abs(clock.dot - target);
			if (this_err < err) {
				*best_clock = clock;
				err = this_err;
			}
		}
	}
	return err != target;
}

/**
 * Return the pipe currently connected to the panel fitter,
 * or -1 if the panel fitter is not present or not in use
 */
static int mdfld_panel_fitter_pipe(struct drm_device *dev)
{
	u32 pfit_control;

	pfit_control = REG_READ(PFIT_CONTROL);

	/* See if the panel fitter is in use */
	if ((pfit_control & PFIT_ENABLE) == 0)
		return -1;
	return (pfit_control >> 29) & 3;
}

static int mdfld_crtc_mode_set(struct drm_crtc *crtc,
			      struct drm_display_mode *mode,
			      struct drm_display_mode *adjusted_mode,
			      int x, int y,
			      struct drm_framebuffer *old_fb)
{
	struct drm_device *dev = crtc->dev;
	struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
	struct drm_psb_private *dev_priv = dev->dev_private;
	int pipe = psb_intel_crtc->pipe;
	int fp_reg = MRST_FPA0;
	int dpll_reg = MRST_DPLL_A;
	int dspcntr_reg = DSPACNTR;
	int pipeconf_reg = PIPEACONF;
	int htot_reg = HTOTAL_A;
	int hblank_reg = HBLANK_A;
	int hsync_reg = HSYNC_A;
	int vtot_reg = VTOTAL_A;
	int vblank_reg = VBLANK_A;
	int vsync_reg = VSYNC_A;
	int dspsize_reg = DSPASIZE; 
	int dsppos_reg = DSPAPOS; 
	int pipesrc_reg = PIPEASRC;
	u32 *pipeconf = &dev_priv->pipeconf;
	u32 *dspcntr = &dev_priv->dspcntr;
	int refclk = 0;
	int clk_n = 0, clk_p2 = 0, clk_byte = 1, clk = 0, m_conv = 0, clk_tmp = 0;
	struct mdfld_intel_clock_t clock;
	bool ok;
	u32 dpll = 0, fp = 0;
	bool is_crt = false, is_lvds = false, is_tv = false;
	bool is_mipi = false, is_mipi2 = false, is_hdmi = false;
	struct drm_mode_config *mode_config = &dev->mode_config;
	struct psb_intel_output *psb_intel_output = NULL;
	uint64_t scalingType = DRM_MODE_SCALE_FULLSCREEN;
	struct drm_encoder *encoder;
	struct drm_connector *connector;
	int timeout = 0;

	dev_dbg(dev->dev, "pipe = 0x%x \n", pipe);

	switch (pipe) {
	case 0:
		break;
	case 1:
		fp_reg = FPB0;
		dpll_reg = DPLL_B;
		dspcntr_reg = DSPBCNTR;
		pipeconf_reg = PIPEBCONF;
		htot_reg = HTOTAL_B;
		hblank_reg = HBLANK_B;
		hsync_reg = HSYNC_B;
		vtot_reg = VTOTAL_B;
		vblank_reg = VBLANK_B;
		vsync_reg = VSYNC_B;
		dspsize_reg = DSPBSIZE; 
		dsppos_reg = DSPBPOS; 
		pipesrc_reg = PIPEBSRC;
		pipeconf = &dev_priv->pipeconf1;
		dspcntr = &dev_priv->dspcntr1;
		fp_reg = MDFLD_DPLL_DIV0;
		dpll_reg = MDFLD_DPLL_B;
		break;
	case 2:
		dpll_reg = MRST_DPLL_A;
		dspcntr_reg = DSPCCNTR;
		pipeconf_reg = PIPECCONF;
		htot_reg = HTOTAL_C;
		hblank_reg = HBLANK_C;
		hsync_reg = HSYNC_C;
		vtot_reg = VTOTAL_C;
		vblank_reg = VBLANK_C;
		vsync_reg = VSYNC_C;
		dspsize_reg = DSPCSIZE; 
		dsppos_reg = DSPCPOS; 
		pipesrc_reg = PIPECSRC;
		pipeconf = &dev_priv->pipeconf2;
		dspcntr = &dev_priv->dspcntr2;
		break;
	default:
		DRM_ERROR("Illegal Pipe Number. \n");
		return 0;
	}

	dev_dbg(dev->dev, "adjusted_hdisplay = %d\n",
		 adjusted_mode->hdisplay);
	dev_dbg(dev->dev, "adjusted_vdisplay = %d\n",
		 adjusted_mode->vdisplay);
	dev_dbg(dev->dev, "adjusted_hsync_start = %d\n",
		 adjusted_mode->hsync_start);
	dev_dbg(dev->dev, "adjusted_hsync_end = %d\n",
		 adjusted_mode->hsync_end);
	dev_dbg(dev->dev, "adjusted_htotal = %d\n",
		 adjusted_mode->htotal);
	dev_dbg(dev->dev, "adjusted_vsync_start = %d\n",
		 adjusted_mode->vsync_start);
	dev_dbg(dev->dev, "adjusted_vsync_end = %d\n",
		 adjusted_mode->vsync_end);
	dev_dbg(dev->dev, "adjusted_vtotal = %d\n",
		 adjusted_mode->vtotal);
	dev_dbg(dev->dev, "adjusted_clock = %d\n",
		 adjusted_mode->clock);
	dev_dbg(dev->dev, "hdisplay = %d\n",
		 mode->hdisplay);
	dev_dbg(dev->dev, "vdisplay = %d\n",
		 mode->vdisplay);

	if (!gma_power_begin(dev, true))
		return 0;

	memcpy(&psb_intel_crtc->saved_mode, mode, sizeof(struct drm_display_mode));
	memcpy(&psb_intel_crtc->saved_adjusted_mode, adjusted_mode, sizeof(struct drm_display_mode));

	list_for_each_entry(connector, &mode_config->connector_list, head) {
			
		encoder = connector->encoder;
		
		if(!encoder)
			continue;

		if (encoder->crtc != crtc)
			continue;

		psb_intel_output = to_psb_intel_output(connector);
		
		dev_dbg(dev->dev, "output->type = 0x%x \n", psb_intel_output->type);

		switch (psb_intel_output->type) {
		case INTEL_OUTPUT_LVDS:
			is_lvds = true;
			break;
		case INTEL_OUTPUT_TVOUT:
			is_tv = true;
			break;
		case INTEL_OUTPUT_ANALOG:
			is_crt = true;
			break;
		case INTEL_OUTPUT_MIPI:
			is_mipi = true;
			break;
		case INTEL_OUTPUT_MIPI2:
			is_mipi2 = true;
			break;
		case INTEL_OUTPUT_HDMI:
			is_hdmi = true;
			break;
		}
	}

	/* Disable the VGA plane that we never use */
	REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);

	/* Disable the panel fitter if it was on our pipe */
	if (mdfld_panel_fitter_pipe(dev) == pipe)
		REG_WRITE(PFIT_CONTROL, 0);

	/* pipesrc and dspsize control the size that is scaled from,
	 * which should always be the user's requested size.
	 */
	if (pipe == 1) {
		/* FIXME: To make HDMI display with 864x480 (TPO), 480x864 (PYR) or 480x854 (TMD), set the sprite
		 * width/height and souce image size registers with the adjusted mode for pipe B. */

		/* The defined sprite rectangle must always be completely contained within the displayable
		 * area of the screen image (frame buffer). */
		REG_WRITE(dspsize_reg, ((MIN(mode->crtc_vdisplay, adjusted_mode->crtc_vdisplay) - 1) << 16)
				| (MIN(mode->crtc_hdisplay, adjusted_mode->crtc_hdisplay) - 1));
		/* Set the CRTC with encoder mode. */
		REG_WRITE(pipesrc_reg, ((mode->crtc_hdisplay - 1) << 16)
				 | (mode->crtc_vdisplay - 1));
	} else {
		REG_WRITE(dspsize_reg, ((mode->crtc_vdisplay - 1) << 16) | (mode->crtc_hdisplay - 1));
		REG_WRITE(pipesrc_reg, ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
	}

	REG_WRITE(dsppos_reg, 0);

	if (psb_intel_output)
		drm_connector_property_get_value(&psb_intel_output->base,
			dev->mode_config.scaling_mode_property, &scalingType);

	if (scalingType == DRM_MODE_SCALE_NO_SCALE) {
		/*
		 *	Medfield doesn't have register support for centering so
		 *	we need to mess with the h/vblank and h/vsync start and
		 *	ends to get central
		 */
		int offsetX = 0, offsetY = 0;

		offsetX = (adjusted_mode->crtc_hdisplay - mode->crtc_hdisplay) / 2;
		offsetY = (adjusted_mode->crtc_vdisplay - mode->crtc_vdisplay) / 2;

		REG_WRITE(htot_reg, (mode->crtc_hdisplay - 1) |
			((adjusted_mode->crtc_htotal - 1) << 16));
		REG_WRITE(vtot_reg, (mode->crtc_vdisplay - 1) |
			((adjusted_mode->crtc_vtotal - 1) << 16));
		REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - offsetX - 1) |
			((adjusted_mode->crtc_hblank_end - offsetX - 1) << 16));
		REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - offsetX - 1) |
			((adjusted_mode->crtc_hsync_end - offsetX - 1) << 16));
		REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - offsetY - 1) |
			((adjusted_mode->crtc_vblank_end - offsetY - 1) << 16));
		REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - offsetY - 1) |
			((adjusted_mode->crtc_vsync_end - offsetY - 1) << 16));
	} else {
		REG_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
			((adjusted_mode->crtc_htotal - 1) << 16));
		REG_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) |
			((adjusted_mode->crtc_vtotal - 1) << 16));
		REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
			((adjusted_mode->crtc_hblank_end - 1) << 16));
		REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) |
			((adjusted_mode->crtc_hsync_end - 1) << 16));
		REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) |
			((adjusted_mode->crtc_vblank_end - 1) << 16));
		REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
			((adjusted_mode->crtc_vsync_end - 1) << 16));
	}

	/* Flush the plane changes */
	{
		struct drm_crtc_helper_funcs *crtc_funcs =
		    crtc->helper_private;
		crtc_funcs->mode_set_base(crtc, x, y, old_fb);
	}

	/* setup pipeconf */
	*pipeconf = PIPEACONF_ENABLE; /* FIXME_JLIU7 REG_READ(pipeconf_reg); */

	/* Set up the display plane register */
 	*dspcntr = REG_READ(dspcntr_reg);
	*dspcntr |= pipe << DISPPLANE_SEL_PIPE_POS;
	*dspcntr |= DISPLAY_PLANE_ENABLE;
/* MDFLD_PO_JLIU7	dspcntr |= DISPPLANE_BOTTOM; */
/* MDFLD_PO_JLIU7	dspcntr |= DISPPLANE_GAMMA_ENABLE; */

	if (is_mipi2)
	{
		goto mrst_crtc_mode_set_exit;
	}
/* FIXME JLIU7 Add MDFLD HDMI supports */
/* FIXME_MDFLD JLIU7 DSIPLL clock *= 8? */
/* FIXME_MDFLD JLIU7 need to revist for dual MIPI supports */
	clk = adjusted_mode->clock;

	if (is_hdmi) {
		if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19))
		{
			refclk = 19200;

			if (is_mipi || is_mipi2)
			{
				clk_n = 1, clk_p2 = 8;
			} else if (is_hdmi) {
				clk_n = 1, clk_p2 = 10;
			}
		} else if (ksel == KSEL_BYPASS_25) { 
			refclk = 25000;

			if (is_mipi || is_mipi2)
			{
				clk_n = 1, clk_p2 = 8;
			} else if (is_hdmi) {
				clk_n = 1, clk_p2 = 10;
			}
		} else if ((ksel == KSEL_BYPASS_83_100) && (dev_priv->core_freq == 166)) {
			refclk = 83000;

			if (is_mipi || is_mipi2)
			{
				clk_n = 4, clk_p2 = 8;
			} else if (is_hdmi) {
				clk_n = 4, clk_p2 = 10;
			}
		} else if ((ksel == KSEL_BYPASS_83_100) &&
			   (dev_priv->core_freq == 100 || dev_priv->core_freq == 200)) {
			refclk = 100000;
			if (is_mipi || is_mipi2)
			{
				clk_n = 4, clk_p2 = 8;
			} else if (is_hdmi) {
				clk_n = 4, clk_p2 = 10;
			}
		}

		if (is_mipi)
			clk_byte = dev_priv->bpp / 8;
		else if (is_mipi2)
			clk_byte = dev_priv->bpp2 / 8;
	
		clk_tmp = clk * clk_n * clk_p2 * clk_byte;

		dev_dbg(dev->dev, "clk = %d, clk_n = %d, clk_p2 = %d. \n", clk, clk_n, clk_p2);
		dev_dbg(dev->dev, "adjusted_mode->clock = %d, clk_tmp = %d. \n", adjusted_mode->clock, clk_tmp);

		ok = mdfldFindBestPLL(crtc, clk_tmp, refclk, &clock);

		if (!ok) {
			dev_err(dev->dev, 
			   "mdfldFindBestPLL fail in mdfld_crtc_mode_set. \n");
		} else {
			m_conv = mdfld_m_converts[(clock.m - MDFLD_M_MIN)];

			dev_dbg(dev->dev, "dot clock = %d,"
				 "m = %d, p1 = %d, m_conv = %d. \n", clock.dot, clock.m,
				 clock.p1, m_conv);
		}

		dpll = REG_READ(dpll_reg);

		if (dpll & DPLL_VCO_ENABLE) {
			dpll &= ~DPLL_VCO_ENABLE;
			REG_WRITE(dpll_reg, dpll);
			REG_READ(dpll_reg);

			/* FIXME jliu7 check the DPLL lock bit PIPEACONF[29] */
			/* FIXME_MDFLD PO - change 500 to 1 after PO */
			udelay(500);

			/* reset M1, N1 & P1 */
			REG_WRITE(fp_reg, 0);
			dpll &= ~MDFLD_P1_MASK;
			REG_WRITE(dpll_reg, dpll);
			/* FIXME_MDFLD PO - change 500 to 1 after PO */
			udelay(500);
		}

		/* When ungating power of DPLL, needs to wait 0.5us before enable the VCO */
		if (dpll & MDFLD_PWR_GATE_EN) {
			dpll &= ~MDFLD_PWR_GATE_EN;
			REG_WRITE(dpll_reg, dpll);
			/* FIXME_MDFLD PO - change 500 to 1 after PO */
			udelay(500);
		}	

		dpll = 0; 

#if 0 /* FIXME revisit later */
		if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19) || (ksel == KSEL_BYPASS_25)) {
			dpll &= ~MDFLD_INPUT_REF_SEL;	
		} else if (ksel == KSEL_BYPASS_83_100) { 
			dpll |= MDFLD_INPUT_REF_SEL;	
		}
#endif /* FIXME revisit later */

		if (is_hdmi)
			dpll |= MDFLD_VCO_SEL;	

		fp = (clk_n / 2) << 16;
		fp |= m_conv; 

		/* compute bitmask from p1 value */
		dpll |= (1 << (clock.p1 - 2)) << 17;

#if 0 /* 1080p30 & 720p */
        	dpll = 0x00050000;
        	fp = 0x000001be;
#endif 
#if 0 /* 480p */
        	dpll = 0x02010000;
        	fp = 0x000000d2;
#endif 
	} else {
#if 0 /*DBI_TPO_480x864*/
		dpll = 0x00020000;
		fp = 0x00000156; 
#endif /* DBI_TPO_480x864 */ /* get from spec. */

        	dpll = 0x00800000;
	        fp = 0x000000c1;
}

	REG_WRITE(fp_reg, fp);
	REG_WRITE(dpll_reg, dpll);
	/* FIXME_MDFLD PO - change 500 to 1 after PO */
	udelay(500);

	dpll |= DPLL_VCO_ENABLE;
	REG_WRITE(dpll_reg, dpll);
	REG_READ(dpll_reg);

	/* wait for DSI PLL to lock */
	while ((timeout < 20000) && !(REG_READ(pipeconf_reg) & PIPECONF_DSIPLL_LOCK)) {
		udelay(150);
		timeout ++;
	}

	if (is_mipi)
		goto mrst_crtc_mode_set_exit;

	dev_dbg(dev->dev, "is_mipi = 0x%x \n", is_mipi);

	REG_WRITE(pipeconf_reg, *pipeconf);
	REG_READ(pipeconf_reg);

	/* Wait for for the pipe enable to take effect. */
//FIXME_JLIU7 HDMI	mrstWaitForPipeEnable(dev);

	REG_WRITE(dspcntr_reg, *dspcntr);
	psb_intel_wait_for_vblank(dev);

mrst_crtc_mode_set_exit:

	gma_power_end(dev);

	return 0;
}

static void mdfld_crtc_prepare(struct drm_crtc *crtc)
{
	struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
	crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
}

static void mdfld_crtc_commit(struct drm_crtc *crtc)
{
	struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
	crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
}

static bool mdfld_crtc_mode_fixup(struct drm_crtc *crtc,
				  struct drm_display_mode *mode,
				  struct drm_display_mode *adjusted_mode)
{
	return true;
}

const struct drm_crtc_helper_funcs mdfld_helper_funcs = {
	.dpms = mdfld_crtc_dpms,
	.mode_fixup = mdfld_crtc_mode_fixup,
	.mode_set = mdfld_crtc_mode_set,
	.mode_set_base = mdfld__intel_pipe_set_base,
	.prepare = mdfld_crtc_prepare,
	.commit = mdfld_crtc_commit,
};