NUC900 LCD Controller Driver

An LCD controller driver for nuc900s.  The Linux LOGO is just fine and the
FB-Test application was ok, too.

Signed-off-by: Wang Qiang <rurality.linux@gmail.com>
Cc: Wang Zongshun <mcuos.com@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

6 files changed, 430 insertions, 0 deletions

diff --git a/arch/arm/mach-w90x900/cpu.h b/arch/arm/mach-w90x900/cpu.h
index 4d58ba164e25..f8730b60bd76 100644
--- a/arch/arm/mach-w90x900/cpu.h
+++ b/arch/arm/mach-w90x900/cpu.h
@@ -57,3 +57,4 @@ extern struct platform_device nuc900_device_fmi;
 extern struct platform_device nuc900_device_kpi;
 extern struct platform_device nuc900_device_rtc;
 extern struct platform_device nuc900_device_ts;
+extern struct platform_device nuc900_device_lcd;
diff --git a/arch/arm/mach-w90x900/dev.c b/arch/arm/mach-w90x900/dev.c
index ec711f4b4019..48876122df91 100644
--- a/arch/arm/mach-w90x900/dev.c
+++ b/arch/arm/mach-w90x900/dev.c
@@ -34,6 +34,7 @@
 #include <mach/regs-serial.h>
 #include <mach/nuc900_spi.h>
 #include <mach/map.h>
+#include <mach/fb.h>
 
 #include "cpu.h"
 
@@ -380,6 +381,47 @@ struct platform_device nuc900_device_kpi = {
         .resource       = nuc900_kpi_resource,
 };
 
+#ifdef CONFIG_FB_NUC900
+
+static struct resource nuc900_lcd_resource[] = {
+        [0] = {
+                .start = W90X900_PA_LCD,
+                .end   = W90X900_PA_LCD + W90X900_SZ_LCD - 1,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_LCD,
+                .end   = IRQ_LCD,
+                .flags = IORESOURCE_IRQ,
+        }
+};
+
+static u64 nuc900_device_lcd_dmamask = -1;
+struct platform_device nuc900_device_lcd = {
+        .name             = "nuc900-lcd",
+        .id               = -1,
+        .num_resources    = ARRAY_SIZE(nuc900_lcd_resource),
+        .resource         = nuc900_lcd_resource,
+        .dev              = {
+                .dma_mask               = &nuc900_device_lcd_dmamask,
+                .coherent_dma_mask      = -1,
+        }
+};
+
+void  nuc900_fb_set_platdata(struct nuc900fb_mach_info *pd)
+{
+        struct nuc900fb_mach_info *npd;
+
+        npd = kmalloc(sizeof(*npd), GFP_KERNEL);
+        if (npd) {
+                memcpy(npd, pd, sizeof(*npd));
+                nuc900_device_lcd.dev.platform_data = npd;
+        } else {
+                printk(KERN_ERR "no memory for LCD platform data\n");
+        }
+}
+#endif
+
 /*Here should be your evb resourse,such as LCD*/
 
 static struct platform_device *nuc900_public_dev[] __initdata = {
diff --git a/arch/arm/mach-w90x900/include/mach/fb.h b/arch/arm/mach-w90x900/include/mach/fb.h
new file mode 100644
index 000000000000..cec5ece765ed
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/fb.h
@@ -0,0 +1,83 @@
+/* linux/include/asm/arch-nuc900/fb.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * Changelog:
+ *
+ *   2008/08/26     vincen.zswan modify this file for LCD.
+ */
+
+#ifndef __ASM_ARM_FB_H
+#define __ASM_ARM_FB_H
+
+
+
+/* LCD Controller Hardware Desc */
+struct nuc900fb_hw {
+        unsigned int lcd_dccs;
+        unsigned int lcd_device_ctrl;
+        unsigned int lcd_mpulcd_cmd;
+        unsigned int lcd_int_cs;
+        unsigned int lcd_crtc_size;
+        unsigned int lcd_crtc_dend;
+        unsigned int lcd_crtc_hr;
+        unsigned int lcd_crtc_hsync;
+        unsigned int lcd_crtc_vr;
+        unsigned int lcd_va_baddr0;
+        unsigned int lcd_va_baddr1;
+        unsigned int lcd_va_fbctrl;
+        unsigned int lcd_va_scale;
+        unsigned int lcd_va_test;
+        unsigned int lcd_va_win;
+        unsigned int lcd_va_stuff;
+};
+
+/* LCD Display Description */
+struct nuc900fb_display {
+        /* LCD Image type */
+        unsigned type;
+
+        /* LCD Screen Size */
+        unsigned short width;
+        unsigned short height;
+
+        /* LCD Screen Info */
+        unsigned short xres;
+        unsigned short yres;
+        unsigned short bpp;
+
+        unsigned long pixclock;
+        unsigned short left_margin;
+        unsigned short right_margin;
+        unsigned short hsync_len;
+        unsigned short upper_margin;
+        unsigned short lower_margin;
+        unsigned short vsync_len;
+
+        /* hardware special register value */
+        unsigned int dccs;
+        unsigned int devctl;
+        unsigned int fbctrl;
+        unsigned int scale;
+};
+
+struct nuc900fb_mach_info {
+        struct nuc900fb_display *displays;
+        unsigned num_displays;
+        unsigned default_display;
+        /* GPIO Setting  Info */
+        unsigned gpio_dir;
+        unsigned gpio_dir_mask;
+        unsigned gpio_data;
+        unsigned gpio_data_mask;
+};
+
+extern void __init nuc900_fb_set_platdata(struct nuc900fb_mach_info *);
+
+#endif /* __ASM_ARM_FB_H */
diff --git a/arch/arm/mach-w90x900/include/mach/regs-ldm.h b/arch/arm/mach-w90x900/include/mach/regs-ldm.h
new file mode 100644
index 000000000000..e9d480a5b232
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/regs-ldm.h
@@ -0,0 +1,253 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/regs-serial.h
+ *
+ * Copyright (c) 2009 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * 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.
+ *
+ *  Description:
+ *     Nuvoton Display, LCM Register list
+ *  Author:  Wang Qiang (rurality.linux@gmail.com) 2009/12/11
+ *
+ */
+
+
+#ifndef __ASM_ARM_W90X900_REGS_LDM_H
+#define __ASM_ARM_W90X900_REGS_LDM_H
+
+#include <mach/map.h>
+
+/* Display Controller Control/Status Register */
+#define REG_LCM_DCCS                    (0x00)
+
+#define LCM_DCCS_ENG_RST                (1 << 0)
+#define LCM_DCCS_VA_EN                  (1 << 1)
+#define LCM_DCCS_OSD_EN                 (1 << 2)
+#define LCM_DCCS_DISP_OUT_EN            (1 << 3)
+#define LCM_DCCS_DISP_INT_EN            (1 << 4)
+#define LCM_DCCS_CMD_ON                 (1 << 5)
+#define LCM_DCCS_FIELD_INTR             (1 << 6)
+#define LCM_DCCS_SINGLE                 (1 << 7)
+
+enum LCM_DCCS_VA_SRC {
+        LCM_DCCS_VA_SRC_YUV422          = (0 << 8),
+        LCM_DCCS_VA_SRC_YCBCR422        = (1 << 8),
+        LCM_DCCS_VA_SRC_RGB888          = (2 << 8),
+        LCM_DCCS_VA_SRC_RGB666          = (3 << 8),
+        LCM_DCCS_VA_SRC_RGB565          = (4 << 8),
+        LCM_DCCS_VA_SRC_RGB444LOW       = (5 << 8),
+        LCM_DCCS_VA_SRC_RGB444HIGH      = (7 << 8)
+};
+
+
+/* Display Device Control Register */
+#define REG_LCM_DEV_CTRL                (0x04)
+
+enum LCM_DEV_CTRL_SWAP_YCbCr {
+        LCM_DEV_CTRL_SWAP_UYVY          = (0 << 1),
+        LCM_DEV_CTRL_SWAP_YUYV          = (1 << 1),
+        LCM_DEV_CTRL_SWAP_VYUY          = (2 << 1),
+        LCM_DEV_CTRL_SWAP_YVYU          = (3 << 1)
+};
+
+enum LCM_DEV_CTRL_RGB_SHIFT {
+        LCM_DEV_CTRL_RGB_SHIFT_NOT      = (0 << 3),
+        LCM_DEV_CTRL_RGB_SHIFT_ONECYCLE = (1 << 3),
+        LCM_DEV_CTRL_RGB_SHIFT_TWOCYCLE = (2 << 3),
+        LCM_DEV_CTRL_RGB_SHIFT_NOT_DEF  = (3 << 3)
+};
+
+enum LCM_DEV_CTRL_DEVICE {
+        LCM_DEV_CTRL_DEVICE_YUV422      = (0 << 5),
+        LCM_DEV_CTRL_DEVICE_YUV444      = (1 << 5),
+        LCM_DEV_CTRL_DEVICE_UNIPAC      = (4 << 5),
+        LCM_DEV_CTRL_DEVICE_SEIKO_EPSON = (5 << 5),
+        LCM_DEV_CTRL_DEVICE_HIGH_COLOR  = (6 << 5),
+        LCM_DEV_CTRL_DEVICE_MPU         = (7 << 5)
+};
+
+#define LCM_DEV_CTRL_LCD_DDA            (8)
+#define LCM_DEV_CTRL_YUV2CCIR           (16)
+
+enum LCM_DEV_CTRL_LCD_SEL {
+        LCM_DEV_CTRL_LCD_SEL_RGB_GBR    = (0 << 17),
+        LCM_DEV_CTRL_LCD_SEL_BGR_RBG    = (1 << 17),
+        LCM_DEV_CTRL_LCD_SEL_GBR_RGB    = (2 << 17),
+        LCM_DEV_CTRL_LCD_SEL_RBG_BGR    = (3 << 17)
+};
+
+enum LCM_DEV_CTRL_FAL_D {
+        LCM_DEV_CTRL_FAL_D_FALLING      = (0 << 19),
+        LCM_DEV_CTRL_FAL_D_RISING       = (1 << 19),
+};
+
+enum LCM_DEV_CTRL_H_POL {
+        LCM_DEV_CTRL_H_POL_LOW          = (0 << 20),
+        LCM_DEV_CTRL_H_POL_HIGH         = (1 << 20),
+};
+
+enum LCM_DEV_CTRL_V_POL {
+        LCM_DEV_CTRL_V_POL_LOW          = (0 << 21),
+        LCM_DEV_CTRL_V_POL_HIGH         = (1 << 21),
+};
+
+enum LCM_DEV_CTRL_VR_LACE {
+        LCM_DEV_CTRL_VR_LACE_NINTERLACE = (0 << 22),
+        LCM_DEV_CTRL_VR_LACE_INTERLACE  = (1 << 22),
+};
+
+enum LCM_DEV_CTRL_LACE {
+        LCM_DEV_CTRL_LACE_NINTERLACE    = (0 << 23),
+        LCM_DEV_CTRL_LACE_INTERLACE     = (1 << 23),
+};
+
+enum LCM_DEV_CTRL_RGB_SCALE {
+        LCM_DEV_CTRL_RGB_SCALE_4096     = (0 << 24),
+        LCM_DEV_CTRL_RGB_SCALE_65536    = (1 << 24),
+        LCM_DEV_CTRL_RGB_SCALE_262144   = (2 << 24),
+        LCM_DEV_CTRL_RGB_SCALE_16777216 = (3 << 24),
+};
+
+enum LCM_DEV_CTRL_DBWORD {
+        LCM_DEV_CTRL_DBWORD_HALFWORD    = (0 << 26),
+        LCM_DEV_CTRL_DBWORD_FULLWORD    = (1 << 26),
+};
+
+enum LCM_DEV_CTRL_MPU68 {
+        LCM_DEV_CTRL_MPU68_80_SERIES    = (0 << 27),
+        LCM_DEV_CTRL_MPU68_68_SERIES    = (1 << 27),
+};
+
+enum LCM_DEV_CTRL_DE_POL {
+        LCM_DEV_CTRL_DE_POL_HIGH        = (0 << 28),
+        LCM_DEV_CTRL_DE_POL_LOW         = (1 << 28),
+};
+
+#define LCM_DEV_CTRL_CMD16              (29)
+#define LCM_DEV_CTRL_CM16t18            (30)
+#define LCM_DEV_CTRL_CMD_LOW            (31)
+
+/* MPU-Interface LCD Write Command */
+#define REG_LCM_MPU_CMD                 (0x08)
+
+/* Interrupt Control/Status Register */
+#define REG_LCM_INT_CS                  (0x0c)
+#define LCM_INT_CS_DISP_F_EN            (1 << 0)
+#define LCM_INT_CS_UNDERRUN_EN          (1 << 1)
+#define LCM_INT_CS_BUS_ERROR_INT        (1 << 28)
+#define LCM_INT_CS_UNDERRUN_INT         (1 << 29)
+#define LCM_INT_CS_DISP_F_STATUS        (1 << 30)
+#define LCM_INT_CS_DISP_F_INT           (1 << 31)
+
+/* CRTC Display Size Control Register */
+#define REG_LCM_CRTC_SIZE               (0x10)
+#define LCM_CRTC_SIZE_VTTVAL(x)         ((x) << 16)
+#define LCM_CRTC_SIZE_HTTVAL(x)         ((x) << 0)
+
+/* CRTC Display Enable End */
+#define REG_LCM_CRTC_DEND               (0x14)
+#define LCM_CRTC_DEND_VDENDVAL(x)       ((x) << 16)
+#define LCM_CRTC_DEND_HDENDVAL(x)       ((x) << 0)
+
+/* CRTC Internal Horizontal Retrace Control Register */
+#define REG_LCM_CRTC_HR                 (0x18)
+#define LCM_CRTC_HR_EVAL(x)             ((x) << 16)
+#define LCM_CRTC_HR_SVAL(x)             ((x) << 0)
+
+/* CRTC Horizontal Sync Control Register */
+#define REG_LCM_CRTC_HSYNC              (0x1C)
+#define LCM_CRTC_HSYNC_SHIFTVAL(x)      ((x) << 30)
+#define LCM_CRTC_HSYNC_EVAL(x)          ((x) << 16)
+#define LCM_CRTC_HSYNC_SVAL(x)          ((x) << 0)
+
+/* CRTC Internal Vertical Retrace Control Register */
+#define REG_LCM_CRTC_VR                 (0x20)
+#define LCM_CRTC_VR_EVAL(x)             ((x) << 16)
+#define LCM_CRTC_VR_SVAL(x)             ((x) << 0)
+
+/* Video Stream Frame Buffer-0 Starting Address */
+#define REG_LCM_VA_BADDR0               (0x24)
+
+/* Video Stream Frame Buffer-1 Starting Address */
+#define REG_LCM_VA_BADDR1               (0x28)
+
+/* Video Stream Frame Buffer Control Register */
+#define REG_LCM_VA_FBCTRL               (0x2C)
+#define LCM_VA_FBCTRL_IO_REGION_HALF    (1 << 28)
+#define LCM_VA_FBCTRL_FIELD_DUAL        (1 << 29)
+#define LCM_VA_FBCTRL_START_BUF         (1 << 30)
+#define LCM_VA_FBCTRL_DB_EN             (1 << 31)
+
+/* Video Stream Scaling Control Register */
+#define REG_LCM_VA_SCALE                (0x30)
+#define LCM_VA_SCALE_XCOPY_INTERPOLATION (0 << 15)
+#define LCM_VA_SCALE_XCOPY_DUPLICATION   (1 << 15)
+
+/* Image Stream Active Window Coordinates */
+#define REG_LCM_VA_WIN                  (0x38)
+
+/* Image Stream Stuff Pixel */
+#define REG_LCM_VA_STUFF                (0x3C)
+
+/* OSD Window Starting Coordinates */
+#define REG_LCM_OSD_WINS                (0x40)
+
+/* OSD Window Ending Coordinates */
+#define REG_LCM_OSD_WINE                (0x44)
+
+/* OSD Stream Frame Buffer Starting Address */
+#define REG_LCM_OSD_BADDR               (0x48)
+
+/* OSD Stream Frame Buffer Control Register */
+#define REG_LCM_OSD_FBCTRL              (0x4c)
+
+/* OSD Overlay Control Register */
+#define REG_LCM_OSD_OVERLAY             (0x50)
+
+/* OSD Overlay Color-Key Pattern Register */
+#define REG_LCM_OSD_CKEY                (0x54)
+
+/* OSD Overlay Color-Key Mask Register */
+#define REG_LCM_OSD_CMASK               (0x58)
+
+/* OSD Window Skip1 Register */
+#define REG_LCM_OSD_SKIP1               (0x5C)
+
+/* OSD Window Skip2 Register */
+#define REG_LCM_OSD_SKIP2               (0x60)
+
+/* OSD horizontal up scaling control register */
+#define REG_LCM_OSD_SCALE               (0x64)
+
+/* MPU Vsync control register */
+#define REG_LCM_MPU_VSYNC               (0x68)
+
+/* Hardware cursor control Register */
+#define REG_LCM_HC_CTRL                 (0x6C)
+
+/* Hardware cursot tip point potison on va picture */
+#define REG_LCM_HC_POS                  (0x70)
+
+/* Hardware Cursor Window Buffer Control Register */
+#define REG_LCM_HC_WBCTRL               (0x74)
+
+/* Hardware cursor memory base address register */
+#define REG_LCM_HC_BADDR                (0x78)
+
+/* Hardware cursor color ram register mapped to bpp = 0 */
+#define REG_LCM_HC_COLOR0               (0x7C)
+
+/* Hardware cursor color ram register mapped to bpp = 1 */
+#define REG_LCM_HC_COLOR1               (0x80)
+
+/* Hardware cursor color ram register mapped to bpp = 2 */
+#define REG_LCM_HC_COLOR2               (0x84)
+
+/* Hardware cursor color ram register mapped to bpp = 3 */
+#define REG_LCM_HC_COLOR3               (0x88)
+
+#endif /* __ASM_ARM_W90X900_REGS_LDM_H */
diff --git a/arch/arm/mach-w90x900/mach-nuc950evb.c b/arch/arm/mach-w90x900/mach-nuc950evb.c
index cef903bcccd1..b3edc3cccf52 100644
--- a/arch/arm/mach-w90x900/mach-nuc950evb.c
+++ b/arch/arm/mach-w90x900/mach-nuc950evb.c
@@ -10,6 +10,8 @@
  * 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;version 2 of the License.
+ *   history:
+ *     Wang Qiang (rurality.linux@gmail.com) add LCD support
  *
  */
 
@@ -18,9 +20,51 @@
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 #include <mach/map.h>
+#include <mach/regs-ldm.h>
+#include <mach/fb.h>
 
 #include "nuc950.h"
 
+#ifdef CONFIG_FB_NUC900
+/* LCD Controller */
+static struct nuc900fb_display __initdata nuc950_lcd_info[] = {
+        /* Giantplus Technology GPM1040A0 320x240 Color TFT LCD */
+        [0] = {
+                .type           = LCM_DCCS_VA_SRC_RGB565,
+                .width          = 320,
+                .height         = 240,
+                .xres           = 320,
+                .yres           = 240,
+                .bpp            = 16,
+                .pixclock       = 200000,
+                .left_margin    = 34,
+                .right_margin   = 54,
+                .hsync_len      = 10,
+                .upper_margin   = 18,
+                .lower_margin   = 4,
+                .vsync_len      = 1,
+                .dccs           = 0x8e00041a,
+                .devctl         = 0x060800c0,
+                .fbctrl         = 0x00a000a0,
+                .scale          = 0x04000400,
+        },
+};
+
+static struct nuc900fb_mach_info nuc950_fb_info __initdata = {
+#if defined(CONFIG_GPM1040A0_320X240)
+        .displays               = &nuc950_lcd_info[0],
+#else
+        .displays               = nuc950_lcd_info,
+#endif
+        .num_displays           = ARRAY_SIZE(nuc950_lcd_info),
+        .default_display        = 0,
+        .gpio_dir               = 0x00000004,
+        .gpio_dir_mask          = 0xFFFFFFFD,
+        .gpio_data              = 0x00000004,
+        .gpio_data_mask         = 0xFFFFFFFD,
+};
+#endif
+
 static void __init nuc950evb_map_io(void)
 {
         nuc950_map_io();
@@ -30,6 +74,9 @@ static void __init nuc950evb_map_io(void)
 static void __init nuc950evb_init(void)
 {
         nuc950_board_init();
+#ifdef CONFIG_FB_NUC900
+        nuc900_fb_set_platdata(&nuc950_fb_info);
+#endif
 }
 
 MACHINE_START(W90P950EVB, "W90P950EVB")
diff --git a/arch/arm/mach-w90x900/nuc950.c b/arch/arm/mach-w90x900/nuc950.c
index 149508116d18..4d1f1ab044c4 100644
--- a/arch/arm/mach-w90x900/nuc950.c
+++ b/arch/arm/mach-w90x900/nuc950.c
@@ -18,6 +18,7 @@
 #include <linux/platform_device.h>
 #include <asm/mach/map.h>
 #include <mach/hardware.h>
+
 #include "cpu.h"
 
 /* define specific CPU platform device */
@@ -25,6 +26,9 @@
 static struct platform_device *nuc950_dev[] __initdata = {
         &nuc900_device_kpi,
         &nuc900_device_fmi,
+#ifdef CONFIG_FB_NUC900
+        &nuc900_device_lcd,
+#endif
 };
 
 /* define specific CPU platform io map */