lcd, pxafb: move the pxafb to drivers/video

Since the lcd code was compiled unconditionally for pxa also add
CONFIG_PXA_LCD to the boards using this framebuffer. Since
driver/video contains video and lcd drivers, add lcd to the name
to make clear it belongs to common/lcd.c.

cc: Anatolij Gustschin <agust@denx.de>
cc: Cliff Brake <cliff.brake@gmail.com>
cc: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

2 files changed, 651 insertions, 0 deletions

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 20b2e6f..250aebd 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -36,6 +36,7 @@ COBJS-$(CONFIG_EXYNOS_MIPI_DSIM) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
 COBJS-$(CONFIG_EXYNOS_PWM_BL) += exynos_pwm_bl.o
 COBJS-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
 COBJS-$(CONFIG_MPC8XX_LCD) += mpc8xx_lcd.o
+COBJS-$(CONFIG_PXA_LCD) += pxa_lcd.o
 COBJS-$(CONFIG_S6E8AX0) += s6e8ax0.o
 COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
 COBJS-$(CONFIG_LD9040) += ld9040.o
diff --git a/drivers/video/pxa_lcd.c b/drivers/video/pxa_lcd.c
new file mode 100644
index 0000000..25747b1
--- /dev/null
+++ b/drivers/video/pxa_lcd.c
@@ -0,0 +1,650 @@
+/*
+ * PXA LCD Controller
+ *
+ * (C) Copyright 2001-2002
+ * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/************************************************************************/
+/* ** HEADER FILES							*/
+/************************************************************************/
+
+#include <config.h>
+#include <common.h>
+#include <version.h>
+#include <stdarg.h>
+#include <linux/types.h>
+#include <stdio_dev.h>
+#include <lcd.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/io.h>
+
+/* #define DEBUG */
+
+#ifdef CONFIG_LCD
+
+/*----------------------------------------------------------------------*/
+/*
+ * Define panel bpp, LCCR0, LCCR3 and panel_info video struct for
+ * your display.
+ */
+
+#ifdef CONFIG_PXA_VGA
+/* LCD outputs connected to a video DAC  */
+# define LCD_BPP	LCD_COLOR8
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x003008f8
+# define REG_LCCR3	0x0300FF01
+
+/* 640x480x16 @ 61 Hz */
+vidinfo_t panel_info = {
+	.vl_col		= 640,
+	.vl_row		= 480,
+	.vl_width	= 640,
+	.vl_height	= 480,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_HIGH,
+	.vl_vsp		= CONFIG_SYS_HIGH,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 0,
+	.vl_clor	= 0,
+	.vl_tft		= 1,
+	.vl_hpw		= 40,
+	.vl_blw		= 56,
+	.vl_elw		= 56,
+	.vl_vpw		= 20,
+	.vl_bfw		= 8,
+	.vl_efw		= 8,
+};
+#endif /* CONFIG_PXA_VIDEO */
+
+/*----------------------------------------------------------------------*/
+#ifdef CONFIG_SHARP_LM8V31
+
+# define LCD_BPP	LCD_COLOR8
+# define LCD_INVERT_COLORS	/* Needed for colors to be correct, but why?	*/
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x0030087C
+# define REG_LCCR3	0x0340FF08
+
+vidinfo_t panel_info = {
+	.vl_col		= 640,
+	.vl_row		= 480,
+	.vl_width	= 157,
+	.vl_height	= 118,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_HIGH,
+	.vl_vsp		= CONFIG_SYS_HIGH,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 1,
+	.vl_clor	= 1,
+	.vl_tft		= 0,
+	.vl_hpw		= 1,
+	.vl_blw		= 3,
+	.vl_elw		= 3,
+	.vl_vpw		= 1,
+	.vl_bfw		= 0,
+	.vl_efw		= 0,
+};
+#endif /* CONFIG_SHARP_LM8V31 */
+/*----------------------------------------------------------------------*/
+#ifdef CONFIG_VOIPAC_LCD
+
+# define LCD_BPP	LCD_COLOR8
+# define LCD_INVERT_COLORS
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x043008f8
+# define REG_LCCR3	0x0340FF08
+
+vidinfo_t panel_info = {
+	.vl_col		= 640,
+	.vl_row		= 480,
+	.vl_width	= 157,
+	.vl_height	= 118,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_HIGH,
+	.vl_vsp		= CONFIG_SYS_HIGH,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 1,
+	.vl_clor	= 1,
+	.vl_tft		= 1,
+	.vl_hpw		= 32,
+	.vl_blw		= 144,
+	.vl_elw		= 32,
+	.vl_vpw		= 2,
+	.vl_bfw		= 13,
+	.vl_efw		= 30,
+};
+#endif /* CONFIG_VOIPAC_LCD */
+
+/*----------------------------------------------------------------------*/
+#ifdef CONFIG_HITACHI_SX14
+/* Hitachi SX14Q004-ZZA color STN LCD */
+#define LCD_BPP		LCD_COLOR8
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+#define REG_LCCR0	0x00301079
+#define REG_LCCR3	0x0340FF20
+
+vidinfo_t panel_info = {
+	.vl_col		= 320,
+	.vl_row		= 240,
+	.vl_width	= 167,
+	.vl_height	= 109,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_HIGH,
+	.vl_vsp		= CONFIG_SYS_HIGH,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 1,
+	.vl_splt	= 0,
+	.vl_clor	= 1,
+	.vl_tft		= 0,
+	.vl_hpw		= 1,
+	.vl_blw		= 1,
+	.vl_elw		= 1,
+	.vl_vpw		= 7,
+	.vl_bfw		= 0,
+	.vl_efw		= 0,
+};
+#endif /* CONFIG_HITACHI_SX14 */
+
+/*----------------------------------------------------------------------*/
+#ifdef CONFIG_LMS283GF05
+
+# define LCD_BPP	LCD_COLOR8
+/*# define LCD_INVERT_COLORS*/
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x043008f8
+# define REG_LCCR3	0x03b00009
+
+vidinfo_t panel_info = {
+	.vl_col		= 240,
+	.vl_row		= 320,
+	.vl_width	= 240,
+	.vl_height	= 320,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_LOW,
+	.vl_hsp		= CONFIG_SYS_LOW,
+	.vl_vsp		= CONFIG_SYS_LOW,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 1,
+	.vl_clor	= 1,
+	.vl_tft		= 1,
+	.vl_hpw		= 4,
+	.vl_blw		= 4,
+	.vl_elw		= 8,
+	.vl_vpw		= 4,
+	.vl_bfw		= 4,
+	.vl_efw		= 8,
+};
+#endif /* CONFIG_LMS283GF05 */
+
+/*----------------------------------------------------------------------*/
+
+#ifdef CONFIG_ACX517AKN
+
+# define LCD_BPP	LCD_COLOR8
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x003008f9
+# define REG_LCCR3	0x03700006
+
+vidinfo_t panel_info = {
+	.vl_col		= 320,
+	.vl_row		= 320,
+	.vl_width	= 320,
+	.vl_height	= 320,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_LOW,
+	.vl_hsp		= CONFIG_SYS_LOW,
+	.vl_vsp		= CONFIG_SYS_LOW,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 1,
+	.vl_clor	= 1,
+	.vl_tft		= 1,
+	.vl_hpw		= 0x04,
+	.vl_blw		= 0x1c,
+	.vl_elw		= 0x08,
+	.vl_vpw		= 0x01,
+	.vl_bfw		= 0x07,
+	.vl_efw		= 0x08,
+};
+#endif /* CONFIG_ACX517AKN */
+
+/*----------------------------------------------------------------------*/
+
+#ifdef CONFIG_LQ038J7DH53
+
+# define LCD_BPP	LCD_COLOR8
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x003008f9
+# define REG_LCCR3	0x03700004
+
+vidinfo_t panel_info = {
+	.vl_col		= 320,
+	.vl_row		= 480,
+	.vl_width	= 320,
+	.vl_height	= 480,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_LOW,
+	.vl_hsp		= CONFIG_SYS_LOW,
+	.vl_vsp		= CONFIG_SYS_LOW,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 1,
+	.vl_clor	= 1,
+	.vl_tft		= 1,
+	.vl_hpw		= 0x04,
+	.vl_blw		= 0x20,
+	.vl_elw		= 0x01,
+	.vl_vpw		= 0x01,
+	.vl_bfw		= 0x04,
+	.vl_efw		= 0x01,
+};
+#endif /* CONFIG_ACX517AKN */
+
+/*----------------------------------------------------------------------*/
+
+#ifdef CONFIG_LITTLETON_LCD
+# define LCD_BPP	LCD_COLOR8
+
+/* you have to set lccr0 and lccr3 (including pcd) */
+# define REG_LCCR0	0x003008f8
+# define REG_LCCR3	0x0300FF04
+
+vidinfo_t panel_info = {
+	.vl_col		= 480,
+	.vl_row		= 640,
+	.vl_width	= 480,
+	.vl_height	= 640,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_oep		= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_HIGH,
+	.vl_vsp		= CONFIG_SYS_HIGH,
+	.vl_dp		= CONFIG_SYS_HIGH,
+	.vl_bpix	= LCD_BPP,
+	.vl_lbw		= 0,
+	.vl_splt	= 0,
+	.vl_clor	= 0,
+	.vl_tft		= 1,
+	.vl_hpw		= 9,
+	.vl_blw		= 8,
+	.vl_elw		= 24,
+	.vl_vpw		= 2,
+	.vl_bfw		= 2,
+	.vl_efw		= 4,
+};
+#endif /* CONFIG_LITTLETON_LCD */
+
+/*----------------------------------------------------------------------*/
+
+#if LCD_BPP == LCD_COLOR8
+void lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue);
+#endif
+#if LCD_BPP == LCD_MONOCHROME
+void lcd_initcolregs (void);
+#endif
+
+#ifdef NOT_USED_SO_FAR
+void lcd_disable (void);
+void lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue);
+#endif /* NOT_USED_SO_FAR */
+
+void lcd_ctrl_init	(void *lcdbase);
+void lcd_enable	(void);
+
+int lcd_line_length;
+
+void *lcd_base;			/* Start of framebuffer memory	*/
+void *lcd_console_address;		/* Start of console buffer	*/
+
+short console_col;
+short console_row;
+
+static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid);
+static void pxafb_setup_gpio (vidinfo_t *vid);
+static void pxafb_enable_controller (vidinfo_t *vid);
+static int pxafb_init (vidinfo_t *vid);
+/************************************************************************/
+
+/************************************************************************/
+/* ---------------  PXA chipset specific functions  ------------------- */
+/************************************************************************/
+
+void lcd_ctrl_init (void *lcdbase)
+{
+	pxafb_init_mem(lcdbase, &panel_info);
+	pxafb_init(&panel_info);
+	pxafb_setup_gpio(&panel_info);
+	pxafb_enable_controller(&panel_info);
+}
+
+/*----------------------------------------------------------------------*/
+#ifdef NOT_USED_SO_FAR
+void
+lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue)
+{
+}
+#endif /* NOT_USED_SO_FAR */
+
+/*----------------------------------------------------------------------*/
+#if LCD_BPP == LCD_COLOR8
+void
+lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
+{
+	struct pxafb_info *fbi = &panel_info.pxa;
+	unsigned short *palette = (unsigned short *)fbi->palette;
+	u_int val;
+
+	if (regno < fbi->palette_size) {
+		val = ((red << 8) & 0xf800);
+		val |= ((green << 4) & 0x07e0);
+		val |= (blue & 0x001f);
+
+#ifdef LCD_INVERT_COLORS
+		palette[regno] = ~val;
+#else
+		palette[regno] = val;
+#endif
+	}
+
+	debug ("setcolreg: reg %2d @ %p: R=%02X G=%02X B=%02X => %04X\n",
+		regno, &palette[regno],
+		red, green, blue,
+		palette[regno]);
+}
+#endif /* LCD_COLOR8 */
+
+/*----------------------------------------------------------------------*/
+#if LCD_BPP == LCD_MONOCHROME
+void lcd_initcolregs (void)
+{
+	struct pxafb_info *fbi = &panel_info.pxa;
+	cmap = (ushort *)fbi->palette;
+	ushort regno;
+
+	for (regno = 0; regno < 16; regno++) {
+		cmap[regno * 2] = 0;
+		cmap[(regno * 2) + 1] = regno & 0x0f;
+	}
+}
+#endif /* LCD_MONOCHROME */
+
+/*----------------------------------------------------------------------*/
+void lcd_enable (void)
+{
+}
+
+/*----------------------------------------------------------------------*/
+#ifdef	NOT_USED_SO_FAR
+static void lcd_disable (void)
+{
+}
+#endif /* NOT_USED_SO_FAR */
+
+/*----------------------------------------------------------------------*/
+
+/************************************************************************/
+/* ** PXA255 specific routines						*/
+/************************************************************************/
+
+/*
+ * Calculate fb size for VIDEOLFB_ATAG. Size returned contains fb,
+ * descriptors and palette areas.
+ */
+ulong calc_fbsize (void)
+{
+	ulong size;
+	int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
+
+	size = line_length * panel_info.vl_row;
+	size += PAGE_SIZE;
+
+	return size;
+}
+
+static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid)
+{
+	u_long palette_mem_size;
+	struct pxafb_info *fbi = &vid->pxa;
+	int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
+
+	fbi->screen = (u_long)lcdbase;
+
+	fbi->palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
+	palette_mem_size = fbi->palette_size * sizeof(u16);
+
+	debug("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
+	/* locate palette and descs at end of page following fb */
+	fbi->palette = (u_long)lcdbase + fb_size + PAGE_SIZE - palette_mem_size;
+
+	return 0;
+}
+#ifdef	CONFIG_CPU_MONAHANS
+static inline void pxafb_setup_gpio (vidinfo_t *vid) {}
+#else
+static void pxafb_setup_gpio (vidinfo_t *vid)
+{
+	u_long lccr0;
+
+	/*
+	 * setup is based on type of panel supported
+	 */
+
+	lccr0 = vid->pxa.reg_lccr0;
+
+	/* 4 bit interface */
+	if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
+	{
+		debug("Setting GPIO for 4 bit data\n");
+		/* bits 58-61 */
+		writel(readl(GPDR1) | (0xf << 26), GPDR1);
+		writel((readl(GAFR1_U) & ~(0xff << 20)) | (0xaa << 20),
+			GAFR1_U);
+
+		/* bits 74-77 */
+		writel(readl(GPDR2) | (0xf << 10), GPDR2);
+		writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
+			GAFR2_L);
+	}
+
+	/* 8 bit interface */
+	else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
+		(!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
+	{
+		debug("Setting GPIO for 8 bit data\n");
+		/* bits 58-65 */
+		writel(readl(GPDR1) | (0x3f << 26), GPDR1);
+		writel(readl(GPDR2) | (0x3), GPDR2);
+
+		writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
+			GAFR1_U);
+		writel((readl(GAFR2_L) & ~0xf) | (0xa), GAFR2_L);
+
+		/* bits 74-77 */
+		writel(readl(GPDR2) | (0xf << 10), GPDR2);
+		writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
+			GAFR2_L);
+	}
+
+	/* 16 bit interface */
+	else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
+	{
+		debug("Setting GPIO for 16 bit data\n");
+		/* bits 58-77 */
+		writel(readl(GPDR1) | (0x3f << 26), GPDR1);
+		writel(readl(GPDR2) | 0x00003fff, GPDR2);
+
+		writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
+			GAFR1_U);
+		writel((readl(GAFR2_L) & 0xf0000000) | 0x0aaaaaaa, GAFR2_L);
+	}
+	else
+	{
+		printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
+	}
+}
+#endif
+
+static void pxafb_enable_controller (vidinfo_t *vid)
+{
+	debug("Enabling LCD controller\n");
+
+	/* Sequence from 11.7.10 */
+	writel(vid->pxa.reg_lccr3, LCCR3);
+	writel(vid->pxa.reg_lccr2, LCCR2);
+	writel(vid->pxa.reg_lccr1, LCCR1);
+	writel(vid->pxa.reg_lccr0 & ~LCCR0_ENB, LCCR0);
+	writel(vid->pxa.fdadr0, FDADR0);
+	writel(vid->pxa.fdadr1, FDADR1);
+	writel(readl(LCCR0) | LCCR0_ENB, LCCR0);
+
+#ifdef	CONFIG_CPU_MONAHANS
+	writel(readl(CKENA) | CKENA_1_LCD, CKENA);
+#else
+	writel(readl(CKEN) | CKEN16_LCD, CKEN);
+#endif
+
+	debug("FDADR0 = 0x%08x\n", readl(FDADR0));
+	debug("FDADR1 = 0x%08x\n", readl(FDADR1));
+	debug("LCCR0 = 0x%08x\n", readl(LCCR0));
+	debug("LCCR1 = 0x%08x\n", readl(LCCR1));
+	debug("LCCR2 = 0x%08x\n", readl(LCCR2));
+	debug("LCCR3 = 0x%08x\n", readl(LCCR3));
+}
+
+static int pxafb_init (vidinfo_t *vid)
+{
+	struct pxafb_info *fbi = &vid->pxa;
+
+	debug("Configuring PXA LCD\n");
+
+	fbi->reg_lccr0 = REG_LCCR0;
+	fbi->reg_lccr3 = REG_LCCR3;
+
+	debug("vid: vl_col=%d hslen=%d lm=%d rm=%d\n",
+		vid->vl_col, vid->vl_hpw,
+		vid->vl_blw, vid->vl_elw);
+	debug("vid: vl_row=%d vslen=%d um=%d bm=%d\n",
+		vid->vl_row, vid->vl_vpw,
+		vid->vl_bfw, vid->vl_efw);
+
+	fbi->reg_lccr1 =
+		LCCR1_DisWdth(vid->vl_col) +
+		LCCR1_HorSnchWdth(vid->vl_hpw) +
+		LCCR1_BegLnDel(vid->vl_blw) +
+		LCCR1_EndLnDel(vid->vl_elw);
+
+	fbi->reg_lccr2 =
+		LCCR2_DisHght(vid->vl_row) +
+		LCCR2_VrtSnchWdth(vid->vl_vpw) +
+		LCCR2_BegFrmDel(vid->vl_bfw) +
+		LCCR2_EndFrmDel(vid->vl_efw);
+
+	fbi->reg_lccr3 = REG_LCCR3 & ~(LCCR3_HSP | LCCR3_VSP);
+	fbi->reg_lccr3 |= (vid->vl_hsp ? LCCR3_HorSnchL : LCCR3_HorSnchH)
+			| (vid->vl_vsp ? LCCR3_VrtSnchL : LCCR3_VrtSnchH);
+
+
+	/* setup dma descriptors */
+	fbi->dmadesc_fblow = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
+	fbi->dmadesc_fbhigh = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
+	fbi->dmadesc_palette = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
+
+	#define BYTES_PER_PANEL	((fbi->reg_lccr0 & LCCR0_SDS) ? \
+		(vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8 / 2) : \
+		(vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8))
+
+	/* populate descriptors */
+	fbi->dmadesc_fblow->fdadr = (u_long)fbi->dmadesc_fblow;
+	fbi->dmadesc_fblow->fsadr = fbi->screen + BYTES_PER_PANEL;
+	fbi->dmadesc_fblow->fidr  = 0;
+	fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
+
+	fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
+
+	fbi->dmadesc_fbhigh->fsadr = fbi->screen;
+	fbi->dmadesc_fbhigh->fidr = 0;
+	fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL;
+
+	fbi->dmadesc_palette->fsadr = fbi->palette;
+	fbi->dmadesc_palette->fidr  = 0;
+	fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
+
+	if( NBITS(vid->vl_bpix) < 12)
+	{
+		/* assume any mode with <12 bpp is palette driven */
+		fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
+		fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
+		/* flips back and forth between pal and fbhigh */
+		fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
+	}
+	else
+	{
+		/* palette shouldn't be loaded in true-color mode */
+		fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
+		fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */
+	}
+
+	debug("fbi->dmadesc_fblow = 0x%lx\n", (u_long)fbi->dmadesc_fblow);
+	debug("fbi->dmadesc_fbhigh = 0x%lx\n", (u_long)fbi->dmadesc_fbhigh);
+	debug("fbi->dmadesc_palette = 0x%lx\n", (u_long)fbi->dmadesc_palette);
+
+	debug("fbi->dmadesc_fblow->fdadr = 0x%lx\n", fbi->dmadesc_fblow->fdadr);
+	debug("fbi->dmadesc_fbhigh->fdadr = 0x%lx\n", fbi->dmadesc_fbhigh->fdadr);
+	debug("fbi->dmadesc_palette->fdadr = 0x%lx\n", fbi->dmadesc_palette->fdadr);
+
+	debug("fbi->dmadesc_fblow->fsadr = 0x%lx\n", fbi->dmadesc_fblow->fsadr);
+	debug("fbi->dmadesc_fbhigh->fsadr = 0x%lx\n", fbi->dmadesc_fbhigh->fsadr);
+	debug("fbi->dmadesc_palette->fsadr = 0x%lx\n", fbi->dmadesc_palette->fsadr);
+
+	debug("fbi->dmadesc_fblow->ldcmd = 0x%lx\n", fbi->dmadesc_fblow->ldcmd);
+	debug("fbi->dmadesc_fbhigh->ldcmd = 0x%lx\n", fbi->dmadesc_fbhigh->ldcmd);
+	debug("fbi->dmadesc_palette->ldcmd = 0x%lx\n", fbi->dmadesc_palette->ldcmd);
+
+	return 0;
+}
+
+/************************************************************************/
+/************************************************************************/
+
+#endif /* CONFIG_LCD */