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authorJeroen Hofstee <jeroen@myspectrum.nl>2013-01-22 10:44:10 +0000
committerAnatolij Gustschin <agust@denx.de>2013-03-21 09:38:21 +0100
commit0698095af6a019c6ded35673a6b96af3fbf24286 (patch)
tree4cd464537e6847d30d058ab4c5f97b09f1fe23cd /drivers
parent59155f4c502ff1045a702d3fda79a17aeda63240 (diff)
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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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/Makefile1
-rw-r--r--drivers/video/pxa_lcd.c650
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 */