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 4d58ba1..f8730b6 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 ec711f4..4887612 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 0000000..cec5ece
--- /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 0000000..e9d480a
--- /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 cef903b..b3edc3c 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 1495081..4d1f1ab 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 */