video, sm501: add I/O functions for use on powerpc

- add read/write functions for using this driver
  also on powerpc plattforms

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: linux-fbdev@vger.kernel.org
cc: devicetree-discuss@ozlabs.org
cc: Ben Dooks <ben@simtec.co.uk>
cc: Vincent Sanders <vince@simtec.co.uk>
cc: Samuel Ortiz <sameo@linux.intel.com>
cc: linux-kernel@vger.kernel.org
cc: Randy Dunlap <rdunlap@xenotime.net>
cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 90 insertions, 82 deletions

diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index bcb44a594ebc..5df406c87c50 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -117,7 +117,7 @@ static inline int v_total(struct fb_var_screeninfo *var)
 
 static inline void sm501fb_sync_regs(struct sm501fb_info *info)
 {
-	readl(info->regs);
+	smc501_readl(info->regs);
 }
 
 /* sm501_alloc_mem
@@ -262,7 +262,7 @@ static void sm501fb_setup_gamma(struct sm501fb_info *fbi,
 
 	/* set gamma values */
 	for (offset = 0; offset < 256 * 4; offset += 4) {
-		writel(value, fbi->regs + palette + offset);
+		smc501_writel(value, fbi->regs + palette + offset);
 		value += 0x010101; 	/* Advance RGB by 1,1,1.*/
 	}
 }
@@ -476,7 +476,8 @@ static int sm501fb_set_par_common(struct fb_info *info,
 
 	/* set start of framebuffer to the screen */
 
-	writel(par->screen.sm_addr | SM501_ADDR_FLIP, fbi->regs + head_addr);
+	smc501_writel(par->screen.sm_addr | SM501_ADDR_FLIP,
+			fbi->regs + head_addr);
 
 	/* program CRT clock  */
 
@@ -519,7 +520,7 @@ static void sm501fb_set_par_geometry(struct fb_info *info,
 	reg = info->fix.line_length;
 	reg |= ((var->xres * var->bits_per_pixel)/8) << 16;
 
-	writel(reg, fbi->regs + (par->head == HEAD_CRT ?
+	smc501_writel(reg, fbi->regs + (par->head == HEAD_CRT ?
 		    SM501_DC_CRT_FB_OFFSET :  SM501_DC_PANEL_FB_OFFSET));
 
 	/* program horizontal total */
@@ -527,27 +528,27 @@ static void sm501fb_set_par_geometry(struct fb_info *info,
 	reg  = (h_total(var) - 1) << 16;
 	reg |= (var->xres - 1);
 
-	writel(reg, base + SM501_OFF_DC_H_TOT);
+	smc501_writel(reg, base + SM501_OFF_DC_H_TOT);
 
 	/* program horizontal sync */
 
 	reg  = var->hsync_len << 16;
 	reg |= var->xres + var->right_margin - 1;
 
-	writel(reg, base + SM501_OFF_DC_H_SYNC);
+	smc501_writel(reg, base + SM501_OFF_DC_H_SYNC);
 
 	/* program vertical total */
 
 	reg  = (v_total(var) - 1) << 16;
 	reg |= (var->yres - 1);
 
-	writel(reg, base + SM501_OFF_DC_V_TOT);
+	smc501_writel(reg, base + SM501_OFF_DC_V_TOT);
 
 	/* program vertical sync */
 	reg  = var->vsync_len << 16;
 	reg |= var->yres + var->lower_margin - 1;
 
-	writel(reg, base + SM501_OFF_DC_V_SYNC);
+	smc501_writel(reg, base + SM501_OFF_DC_V_SYNC);
 }
 
 /* sm501fb_pan_crt
@@ -566,15 +567,15 @@ static int sm501fb_pan_crt(struct fb_var_screeninfo *var,
 
 	xoffs = var->xoffset * bytes_pixel;
 
-	reg = readl(fbi->regs + SM501_DC_CRT_CONTROL);
+	reg = smc501_readl(fbi->regs + SM501_DC_CRT_CONTROL);
 
 	reg &= ~SM501_DC_CRT_CONTROL_PIXEL_MASK;
 	reg |= ((xoffs & 15) / bytes_pixel) << 4;
-	writel(reg, fbi->regs + SM501_DC_CRT_CONTROL);
+	smc501_writel(reg, fbi->regs + SM501_DC_CRT_CONTROL);
 
 	reg = (par->screen.sm_addr + xoffs +
 	       var->yoffset * info->fix.line_length);
-	writel(reg | SM501_ADDR_FLIP, fbi->regs + SM501_DC_CRT_FB_ADDR);
+	smc501_writel(reg | SM501_ADDR_FLIP, fbi->regs + SM501_DC_CRT_FB_ADDR);
 
 	sm501fb_sync_regs(fbi);
 	return 0;
@@ -593,10 +594,10 @@ static int sm501fb_pan_pnl(struct fb_var_screeninfo *var,
 	unsigned long reg;
 
 	reg = var->xoffset | (var->xres_virtual << 16);
-	writel(reg, fbi->regs + SM501_DC_PANEL_FB_WIDTH);
+	smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_WIDTH);
 
 	reg = var->yoffset | (var->yres_virtual << 16);
-	writel(reg, fbi->regs + SM501_DC_PANEL_FB_HEIGHT);
+	smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_HEIGHT);
 
 	sm501fb_sync_regs(fbi);
 	return 0;
@@ -622,7 +623,7 @@ static int sm501fb_set_par_crt(struct fb_info *info)
 	/* enable CRT DAC - note 0 is on!*/
 	sm501_misc_control(fbi->dev->parent, 0, SM501_MISC_DAC_POWER);
 
-	control = readl(fbi->regs + SM501_DC_CRT_CONTROL);
+	control = smc501_readl(fbi->regs + SM501_DC_CRT_CONTROL);
 
 	control &= (SM501_DC_CRT_CONTROL_PIXEL_MASK |
 		    SM501_DC_CRT_CONTROL_GAMMA |
@@ -684,7 +685,7 @@ static int sm501fb_set_par_crt(struct fb_info *info)
  out_update:
 	dev_dbg(fbi->dev, "new control is %08lx\n", control);
 
-	writel(control, fbi->regs + SM501_DC_CRT_CONTROL);
+	smc501_writel(control, fbi->regs + SM501_DC_CRT_CONTROL);
 	sm501fb_sync_regs(fbi);
 
 	return 0;
@@ -696,18 +697,18 @@ static void sm501fb_panel_power(struct sm501fb_info *fbi, int to)
 	void __iomem *ctrl_reg = fbi->regs + SM501_DC_PANEL_CONTROL;
 	struct sm501_platdata_fbsub *pd = fbi->pdata->fb_pnl;
 
-	control = readl(ctrl_reg);
+	control = smc501_readl(ctrl_reg);
 
 	if (to && (control & SM501_DC_PANEL_CONTROL_VDD) == 0) {
 		/* enable panel power */
 
 		control |= SM501_DC_PANEL_CONTROL_VDD;	/* FPVDDEN */
-		writel(control, ctrl_reg);
+		smc501_writel(control, ctrl_reg);
 		sm501fb_sync_regs(fbi);
 		mdelay(10);
 
 		control |= SM501_DC_PANEL_CONTROL_DATA;	/* DATA */
-		writel(control, ctrl_reg);
+		smc501_writel(control, ctrl_reg);
 		sm501fb_sync_regs(fbi);
 		mdelay(10);
 
@@ -719,7 +720,7 @@ static void sm501fb_panel_power(struct sm501fb_info *fbi, int to)
 			else
 				control |= SM501_DC_PANEL_CONTROL_BIAS;
 
-			writel(control, ctrl_reg);
+			smc501_writel(control, ctrl_reg);
 			sm501fb_sync_regs(fbi);
 			mdelay(10);
 		}
@@ -730,7 +731,7 @@ static void sm501fb_panel_power(struct sm501fb_info *fbi, int to)
 			else
 				control |= SM501_DC_PANEL_CONTROL_FPEN;
 
-			writel(control, ctrl_reg);
+			smc501_writel(control, ctrl_reg);
 			sm501fb_sync_regs(fbi);
 			mdelay(10);
 		}
@@ -742,7 +743,7 @@ static void sm501fb_panel_power(struct sm501fb_info *fbi, int to)
 			else
 				control &= ~SM501_DC_PANEL_CONTROL_FPEN;
 
-			writel(control, ctrl_reg);
+			smc501_writel(control, ctrl_reg);
 			sm501fb_sync_regs(fbi);
 			mdelay(10);
 		}
@@ -753,18 +754,18 @@ static void sm501fb_panel_power(struct sm501fb_info *fbi, int to)
 			else
 				control &= ~SM501_DC_PANEL_CONTROL_BIAS;
 
-			writel(control, ctrl_reg);
+			smc501_writel(control, ctrl_reg);
 			sm501fb_sync_regs(fbi);
 			mdelay(10);
 		}
 
 		control &= ~SM501_DC_PANEL_CONTROL_DATA;
-		writel(control, ctrl_reg);
+		smc501_writel(control, ctrl_reg);
 		sm501fb_sync_regs(fbi);
 		mdelay(10);
 
 		control &= ~SM501_DC_PANEL_CONTROL_VDD;
-		writel(control, ctrl_reg);
+		smc501_writel(control, ctrl_reg);
 		sm501fb_sync_regs(fbi);
 		mdelay(10);
 	}
@@ -799,7 +800,7 @@ static int sm501fb_set_par_pnl(struct fb_info *info)
 
 	/* update control register */
 
-	control = readl(fbi->regs + SM501_DC_PANEL_CONTROL);
+	control = smc501_readl(fbi->regs + SM501_DC_PANEL_CONTROL);
 	control &= (SM501_DC_PANEL_CONTROL_GAMMA |
 		    SM501_DC_PANEL_CONTROL_VDD  |
 		    SM501_DC_PANEL_CONTROL_DATA |
@@ -833,16 +834,16 @@ static int sm501fb_set_par_pnl(struct fb_info *info)
 		BUG();
 	}
 
-	writel(0x0, fbi->regs + SM501_DC_PANEL_PANNING_CONTROL);
+	smc501_writel(0x0, fbi->regs + SM501_DC_PANEL_PANNING_CONTROL);
 
 	/* panel plane top left and bottom right location */
 
-	writel(0x00, fbi->regs + SM501_DC_PANEL_TL_LOC);
+	smc501_writel(0x00, fbi->regs + SM501_DC_PANEL_TL_LOC);
 
 	reg  = var->xres - 1;
 	reg |= (var->yres - 1) << 16;
 
-	writel(reg, fbi->regs + SM501_DC_PANEL_BR_LOC);
+	smc501_writel(reg, fbi->regs + SM501_DC_PANEL_BR_LOC);
 
 	/* program panel control register */
 
@@ -855,7 +856,7 @@ static int sm501fb_set_par_pnl(struct fb_info *info)
 	if ((var->sync & FB_SYNC_VERT_HIGH_ACT) == 0)
 		control |= SM501_DC_PANEL_CONTROL_VSP;
 
-	writel(control, fbi->regs + SM501_DC_PANEL_CONTROL);
+	smc501_writel(control, fbi->regs + SM501_DC_PANEL_CONTROL);
 	sm501fb_sync_regs(fbi);
 
 	/* ensure the panel interface is not tristated at this point */
@@ -924,7 +925,7 @@ static int sm501fb_setcolreg(unsigned regno,
 			val |= (green >> 8) << 8;
 			val |= blue >> 8;
 
-			writel(val, base + (regno * 4));
+			smc501_writel(val, base + (regno * 4));
 		}
 
 		break;
@@ -980,7 +981,7 @@ static int sm501fb_blank_crt(int blank_mode, struct fb_info *info)
 
 	dev_dbg(fbi->dev, "%s(mode=%d, %p)\n", __func__, blank_mode, info);
 
-	ctrl = readl(fbi->regs + SM501_DC_CRT_CONTROL);
+	ctrl = smc501_readl(fbi->regs + SM501_DC_CRT_CONTROL);
 
 	switch (blank_mode) {
 	case FB_BLANK_POWERDOWN:
@@ -1004,7 +1005,7 @@ static int sm501fb_blank_crt(int blank_mode, struct fb_info *info)
 
 	}
 
-	writel(ctrl, fbi->regs + SM501_DC_CRT_CONTROL);
+	smc501_writel(ctrl, fbi->regs + SM501_DC_CRT_CONTROL);
 	sm501fb_sync_regs(fbi);
 
 	return 0;
@@ -1041,12 +1042,14 @@ static int sm501fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 	if (cursor->image.depth > 1)
 		return -EINVAL;
 
-	hwc_addr = readl(base + SM501_OFF_HWC_ADDR);
+	hwc_addr = smc501_readl(base + SM501_OFF_HWC_ADDR);
 
 	if (cursor->enable)
-		writel(hwc_addr | SM501_HWC_EN, base + SM501_OFF_HWC_ADDR);
+		smc501_writel(hwc_addr | SM501_HWC_EN,
+				base + SM501_OFF_HWC_ADDR);
 	else
-		writel(hwc_addr & ~SM501_HWC_EN, base + SM501_OFF_HWC_ADDR);
+		smc501_writel(hwc_addr & ~SM501_HWC_EN,
+				base + SM501_OFF_HWC_ADDR);
 
 	/* set data */
 	if (cursor->set & FB_CUR_SETPOS) {
@@ -1060,7 +1063,7 @@ static int sm501fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 
 		//y += cursor->image.height;
 
-		writel(x | (y << 16), base + SM501_OFF_HWC_LOC);
+		smc501_writel(x | (y << 16), base + SM501_OFF_HWC_LOC);
 	}
 
 	if (cursor->set & FB_CUR_SETCMAP) {
@@ -1080,8 +1083,8 @@ static int sm501fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 
 		dev_dbg(fbi->dev, "fgcol %08lx, bgcol %08lx\n", fg, bg);
 
-		writel(bg, base + SM501_OFF_HWC_COLOR_1_2);
-		writel(fg, base + SM501_OFF_HWC_COLOR_3);
+		smc501_writel(bg, base + SM501_OFF_HWC_COLOR_1_2);
+		smc501_writel(fg, base + SM501_OFF_HWC_COLOR_3);
 	}
 
 	if (cursor->set & FB_CUR_SETSIZE ||
@@ -1102,7 +1105,7 @@ static int sm501fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 			__func__, cursor->image.width, cursor->image.height);
 
 		for (op = 0; op < (64*64*2)/8; op+=4)
-			writel(0x0, dst + op);
+			smc501_writel(0x0, dst + op);
 
 		for (y = 0; y < cursor->image.height; y++) {
 			for (x = 0; x < cursor->image.width; x++) {
@@ -1141,7 +1144,7 @@ static ssize_t sm501fb_crtsrc_show(struct device *dev,
 	struct sm501fb_info *info = dev_get_drvdata(dev);
 	unsigned long ctrl;
 
-	ctrl = readl(info->regs + SM501_DC_CRT_CONTROL);
+	ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 	ctrl &= SM501_DC_CRT_CONTROL_SEL;
 
 	return snprintf(buf, PAGE_SIZE, "%s\n", ctrl ? "crt" : "panel");
@@ -1172,7 +1175,7 @@ static ssize_t sm501fb_crtsrc_store(struct device *dev,
 
 	dev_info(dev, "setting crt source to head %d\n", head);
 
-	ctrl = readl(info->regs + SM501_DC_CRT_CONTROL);
+	ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 
 	if (head == HEAD_CRT) {
 		ctrl |= SM501_DC_CRT_CONTROL_SEL;
@@ -1184,7 +1187,7 @@ static ssize_t sm501fb_crtsrc_store(struct device *dev,
 		ctrl &= ~SM501_DC_CRT_CONTROL_TE;
 	}
 
-	writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
+	smc501_writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
 	sm501fb_sync_regs(info);
 
 	return len;
@@ -1205,7 +1208,8 @@ static int sm501fb_show_regs(struct sm501fb_info *info, char *ptr,
 	unsigned int reg;
 
 	for (reg = start; reg < (len + start); reg += 4)
-		ptr += sprintf(ptr, "%08x = %08x\n", reg, readl(mem + reg));
+		ptr += sprintf(ptr, "%08x = %08x\n", reg,
+				smc501_readl(mem + reg));
 
 	return ptr - buf;
 }
@@ -1257,7 +1261,7 @@ static int sm501fb_sync(struct fb_info *info)
 
 	/* wait for the 2d engine to be ready */
 	while ((count > 0) &&
-	       (readl(fbi->regs + SM501_SYSTEM_CONTROL) &
+	       (smc501_readl(fbi->regs + SM501_SYSTEM_CONTROL) &
 		SM501_SYSCTRL_2D_ENGINE_STATUS) != 0)
 		count--;
 
@@ -1312,45 +1316,46 @@ static void sm501fb_copyarea(struct fb_info *info, const struct fb_copyarea *are
 		return;
 
 	/* set the base addresses */
-	writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_SOURCE_BASE);
-	writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_DESTINATION_BASE);
+	smc501_writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_SOURCE_BASE);
+	smc501_writel(par->screen.sm_addr,
+			fbi->regs2d + SM501_2D_DESTINATION_BASE);
 
 	/* set the window width */
-	writel((info->var.xres << 16) | info->var.xres,
+	smc501_writel((info->var.xres << 16) | info->var.xres,
 	       fbi->regs2d + SM501_2D_WINDOW_WIDTH);
 
 	/* set window stride */
-	writel((info->var.xres_virtual << 16) | info->var.xres_virtual,
+	smc501_writel((info->var.xres_virtual << 16) | info->var.xres_virtual,
 	       fbi->regs2d + SM501_2D_PITCH);
 
 	/* set data format */
 	switch (info->var.bits_per_pixel) {
 	case 8:
-		writel(0, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	case 16:
-		writel(0x00100000, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0x00100000, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	case 32:
-		writel(0x00200000, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0x00200000, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	}
 
 	/* 2d compare mask */
-	writel(0xffffffff, fbi->regs2d + SM501_2D_COLOR_COMPARE_MASK);
+	smc501_writel(0xffffffff, fbi->regs2d + SM501_2D_COLOR_COMPARE_MASK);
 
 	/* 2d mask */
-	writel(0xffffffff, fbi->regs2d + SM501_2D_MASK);
+	smc501_writel(0xffffffff, fbi->regs2d + SM501_2D_MASK);
 
 	/* source and destination x y */
-	writel((sx << 16) | sy, fbi->regs2d + SM501_2D_SOURCE);
-	writel((dx << 16) | dy, fbi->regs2d + SM501_2D_DESTINATION);
+	smc501_writel((sx << 16) | sy, fbi->regs2d + SM501_2D_SOURCE);
+	smc501_writel((dx << 16) | dy, fbi->regs2d + SM501_2D_DESTINATION);
 
 	/* w/h */
-	writel((width << 16) | height, fbi->regs2d + SM501_2D_DIMENSION);
+	smc501_writel((width << 16) | height, fbi->regs2d + SM501_2D_DIMENSION);
 
 	/* do area move */
-	writel(0x800000cc | rtl, fbi->regs2d + SM501_2D_CONTROL);
+	smc501_writel(0x800000cc | rtl, fbi->regs2d + SM501_2D_CONTROL);
 }
 
 static void sm501fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
@@ -1372,47 +1377,49 @@ static void sm501fb_fillrect(struct fb_info *info, const struct fb_fillrect *rec
 		return;
 
 	/* set the base addresses */
-	writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_SOURCE_BASE);
-	writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_DESTINATION_BASE);
+	smc501_writel(par->screen.sm_addr, fbi->regs2d + SM501_2D_SOURCE_BASE);
+	smc501_writel(par->screen.sm_addr,
+			fbi->regs2d + SM501_2D_DESTINATION_BASE);
 
 	/* set the window width */
-	writel((info->var.xres << 16) | info->var.xres,
+	smc501_writel((info->var.xres << 16) | info->var.xres,
 	       fbi->regs2d + SM501_2D_WINDOW_WIDTH);
 
 	/* set window stride */
-	writel((info->var.xres_virtual << 16) | info->var.xres_virtual,
+	smc501_writel((info->var.xres_virtual << 16) | info->var.xres_virtual,
 	       fbi->regs2d + SM501_2D_PITCH);
 
 	/* set data format */
 	switch (info->var.bits_per_pixel) {
 	case 8:
-		writel(0, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	case 16:
-		writel(0x00100000, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0x00100000, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	case 32:
-		writel(0x00200000, fbi->regs2d + SM501_2D_STRETCH);
+		smc501_writel(0x00200000, fbi->regs2d + SM501_2D_STRETCH);
 		break;
 	}
 
 	/* 2d compare mask */
-	writel(0xffffffff, fbi->regs2d + SM501_2D_COLOR_COMPARE_MASK);
+	smc501_writel(0xffffffff, fbi->regs2d + SM501_2D_COLOR_COMPARE_MASK);
 
 	/* 2d mask */
-	writel(0xffffffff, fbi->regs2d + SM501_2D_MASK);
+	smc501_writel(0xffffffff, fbi->regs2d + SM501_2D_MASK);
 
 	/* colour */
-	writel(rect->color, fbi->regs2d + SM501_2D_FOREGROUND);
+	smc501_writel(rect->color, fbi->regs2d + SM501_2D_FOREGROUND);
 
 	/* x y */
-	writel((rect->dx << 16) | rect->dy, fbi->regs2d + SM501_2D_DESTINATION);
+	smc501_writel((rect->dx << 16) | rect->dy,
+			fbi->regs2d + SM501_2D_DESTINATION);
 
 	/* w/h */
-	writel((width << 16) | height, fbi->regs2d + SM501_2D_DIMENSION);
+	smc501_writel((width << 16) | height, fbi->regs2d + SM501_2D_DIMENSION);
 
 	/* do rectangle fill */
-	writel(0x800100cc, fbi->regs2d + SM501_2D_CONTROL);
+	smc501_writel(0x800100cc, fbi->regs2d + SM501_2D_CONTROL);
 }
 
 
@@ -1470,11 +1477,12 @@ static int sm501_init_cursor(struct fb_info *fbi, unsigned int reg_base)
 
 	/* initialise the colour registers */
 
-	writel(par->cursor.sm_addr, par->cursor_regs + SM501_OFF_HWC_ADDR);
+	smc501_writel(par->cursor.sm_addr,
+			par->cursor_regs + SM501_OFF_HWC_ADDR);
 
-	writel(0x00, par->cursor_regs + SM501_OFF_HWC_LOC);
-	writel(0x00, par->cursor_regs + SM501_OFF_HWC_COLOR_1_2);
-	writel(0x00, par->cursor_regs + SM501_OFF_HWC_COLOR_3);
+	smc501_writel(0x00, par->cursor_regs + SM501_OFF_HWC_LOC);
+	smc501_writel(0x00, par->cursor_regs + SM501_OFF_HWC_COLOR_1_2);
+	smc501_writel(0x00, par->cursor_regs + SM501_OFF_HWC_COLOR_3);
 	sm501fb_sync_regs(info);
 
 	return 0;
@@ -1581,7 +1589,7 @@ static int sm501fb_start(struct sm501fb_info *info,
 
 	/* clear palette ram - undefined at power on */
 	for (k = 0; k < (256 * 3); k++)
-		writel(0, info->regs + SM501_DC_PANEL_PALETTE + (k * 4));
+		smc501_writel(0, info->regs + SM501_DC_PANEL_PALETTE + (k * 4));
 
 	/* enable display controller */
 	sm501_unit_power(dev->parent, SM501_GATE_DISPLAY, 1);
@@ -1649,20 +1657,20 @@ static int sm501fb_init_fb(struct fb_info *fb,
 	switch (head) {
 	case HEAD_CRT:
 		pd = info->pdata->fb_crt;
-		ctrl = readl(info->regs + SM501_DC_CRT_CONTROL);
+		ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 		enable = (ctrl & SM501_DC_CRT_CONTROL_ENABLE) ? 1 : 0;
 
 		/* ensure we set the correct source register */
 		if (info->pdata->fb_route != SM501_FB_CRT_PANEL) {
 			ctrl |= SM501_DC_CRT_CONTROL_SEL;
-			writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
+			smc501_writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
 		}
 
 		break;
 
 	case HEAD_PANEL:
 		pd = info->pdata->fb_pnl;
-		ctrl = readl(info->regs + SM501_DC_PANEL_CONTROL);
+		ctrl = smc501_readl(info->regs + SM501_DC_PANEL_CONTROL);
 		enable = (ctrl & SM501_DC_PANEL_CONTROL_EN) ? 1 : 0;
 		break;
 
@@ -1680,7 +1688,7 @@ static int sm501fb_init_fb(struct fb_info *fb,
 
 	if (head == HEAD_CRT && info->pdata->fb_route == SM501_FB_CRT_PANEL) {
 		ctrl &= ~SM501_DC_CRT_CONTROL_SEL;
-		writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
+		smc501_writel(ctrl, info->regs + SM501_DC_CRT_CONTROL);
 		enable = 0;
 	}
 
@@ -2085,7 +2093,7 @@ static int sm501fb_suspend(struct platform_device *pdev, pm_message_t state)
 	struct sm501fb_info *info = platform_get_drvdata(pdev);
 
 	/* store crt control to resume with */
-	info->pm_crt_ctrl = readl(info->regs + SM501_DC_CRT_CONTROL);
+	info->pm_crt_ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 
 	sm501fb_suspend_fb(info, HEAD_CRT);
 	sm501fb_suspend_fb(info, HEAD_PANEL);
@@ -2109,10 +2117,10 @@ static int sm501fb_resume(struct platform_device *pdev)
 
 	/* restore the items we want to be saved for crt control */
 
-	crt_ctrl = readl(info->regs + SM501_DC_CRT_CONTROL);
+	crt_ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 	crt_ctrl &= ~SM501_CRT_CTRL_SAVE;
 	crt_ctrl |= info->pm_crt_ctrl & SM501_CRT_CTRL_SAVE;
-	writel(crt_ctrl, info->regs + SM501_DC_CRT_CONTROL);
+	smc501_writel(crt_ctrl, info->regs + SM501_DC_CRT_CONTROL);
 
 	sm501fb_resume_fb(info, HEAD_CRT);
 	sm501fb_resume_fb(info, HEAD_PANEL);