From 8661970875d7d27e4de233d357327fffdb4a5e3d Mon Sep 17 00:00:00 2001 From: Wang Qiang Date: Wed, 10 Mar 2010 15:21:47 -0800 Subject: [PATCH] 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 Cc: Wang Zongshun Cc: Russell King Cc: Krzysztof Helt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/configs/nuc950_defconfig | 53 +- arch/arm/mach-w90x900/cpu.h | 1 + arch/arm/mach-w90x900/dev.c | 42 + arch/arm/mach-w90x900/include/mach/fb.h | 83 ++ arch/arm/mach-w90x900/include/mach/regs-ldm.h | 253 ++++++ arch/arm/mach-w90x900/mach-nuc950evb.c | 47 ++ arch/arm/mach-w90x900/nuc950.c | 4 + drivers/video/Kconfig | 21 + drivers/video/Makefile | 1 + drivers/video/nuc900fb.c | 779 ++++++++++++++++++ drivers/video/nuc900fb.h | 55 ++ 11 files changed, 1338 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-w90x900/include/mach/fb.h create mode 100644 arch/arm/mach-w90x900/include/mach/regs-ldm.h create mode 100644 drivers/video/nuc900fb.c create mode 100644 drivers/video/nuc900fb.h diff --git a/arch/arm/configs/nuc950_defconfig b/arch/arm/configs/nuc950_defconfig index 97300ec478d..51cc2a260cb 100644 --- a/arch/arm/configs/nuc950_defconfig +++ b/arch/arm/configs/nuc950_defconfig @@ -590,8 +590,40 @@ CONFIG_SSB_POSSIBLE=y # # CONFIG_VGASTATE is not set # CONFIG_VIDEO_OUTPUT_CONTROL is not set -# CONFIG_FB is not set # CONFIG_BACKLIGHT_LCD_SUPPORT is not set +CONFIG_FB=y +# CONFIG_FIRMWARE_EDID is not set +# CONFIG_FB_DDC is not set +# CONFIG_FB_BOOT_VESA_SUPPORT is not set +CONFIG_FB_CFB_FILLRECT=y +CONFIG_FB_CFB_COPYAREA=y +CONFIG_FB_CFB_IMAGEBLIT=y +# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set +# CONFIG_FB_SYS_FILLRECT is not set +# CONFIG_FB_SYS_COPYAREA is not set +# CONFIG_FB_SYS_IMAGEBLIT is not set +# CONFIG_FB_FOREIGN_ENDIAN is not set +# CONFIG_FB_SYS_FOPS is not set +# CONFIG_FB_SVGALIB is not set +# CONFIG_FB_MACMODES is not set +# CONFIG_FB_BACKLIGHT is not set +# CONFIG_FB_MODE_HELPERS is not set +# CONFIG_FB_TILEBLITTING is not set + +# +# Frame buffer hardware drivers +# +# CONFIG_FB_S1D13XXX is not set +CONFIG_FB_NUC900=y +CONFIG_GPM1040A0_320X240=y +CONFIG_FB_NUC900_DEBUG=y +# CONFIG_FB_VIRTUAL is not set +# CONFIG_FB_METRONOME is not set +# CONFIG_FB_MB862XX is not set +# CONFIG_FB_BROADSHEET is not set +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set + + # # Display device support @@ -603,6 +635,25 @@ CONFIG_SSB_POSSIBLE=y # # CONFIG_VGA_CONSOLE is not set CONFIG_DUMMY_CONSOLE=y +CONFIG_FRAMEBUFFER_CONSOLE=y +CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y +# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set +CONFIG_FONTS=y +# CONFIG_FONT_8x8 is not set +CONFIG_FONT_8x16=y +# CONFIG_FONT_6x11 is not set +# CONFIG_FONT_7x14 is not set +# CONFIG_FONT_PEARL_8x8 is not set +# CONFIG_FONT_ACORN_8x8 is not set +# CONFIG_FONT_MINI_4x6 is not set +# CONFIG_FONT_SUN8x16 is not set +# CONFIG_FONT_SUN12x22 is not set +# CONFIG_FONT_10x18 is not set +CONFIG_LOGO=y +# CONFIG_LOGO_LINUX_MONO is not set +# CONFIG_LOGO_LINUX_VGA16 is not set +CONFIG_LOGO_LINUX_CLUT224=y + # CONFIG_SOUND is not set # CONFIG_HID_SUPPORT is not set CONFIG_USB_SUPPORT=y diff --git a/arch/arm/mach-w90x900/cpu.h b/arch/arm/mach-w90x900/cpu.h index 4d58ba164e2..f8730b60bd7 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 ec711f4b401..48876122df9 100644 --- a/arch/arm/mach-w90x900/dev.c +++ b/arch/arm/mach-w90x900/dev.c @@ -34,6 +34,7 @@ #include #include #include +#include #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 00000000000..cec5ece765e --- /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 00000000000..e9d480a5b23 --- /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 + +/* 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 cef903bcccd..b3edc3cccf5 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 #include #include +#include +#include #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 149508116d1..4d1f1ab044c 100644 --- a/arch/arm/mach-w90x900/nuc950.c +++ b/arch/arm/mach-w90x900/nuc950.c @@ -18,6 +18,7 @@ #include #include #include + #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 */ diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 7fe18390c58..3e5b4490c01 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -1944,6 +1944,27 @@ config FB_S3C2410_DEBUG Turn on debugging messages. Note that you can set/unset at run time through sysfs +config FB_NUC900 + bool "NUC900 LCD framebuffer support" + depends on FB && ARCH_W90X900 + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + ---help--- + Frame buffer driver for the built-in LCD controller in the Nuvoton + NUC900 processor + +config GPM1040A0_320X240 + bool "Giantplus Technology GPM1040A0 320x240 Color TFT LCD" + depends on FB_NUC900 + +config FB_NUC900_DEBUG + bool "NUC900 lcd debug messages" + depends on FB_NUC900 + help + Turn on debugging messages. Note that you can set/unset at run time + through sysfs + config FB_SM501 tristate "Silicon Motion SM501 framebuffer support" depends on FB && MFD_SM501 diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 4ecb30c4f3f..a42ad55e3a1 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -129,6 +129,7 @@ obj-$(CONFIG_XEN_FBDEV_FRONTEND) += xen-fbfront.o obj-$(CONFIG_FB_CARMINE) += carminefb.o obj-$(CONFIG_FB_MB862XX) += mb862xx/ obj-$(CONFIG_FB_MSM) += msm/ +obj-$(CONFIG_FB_NUC900) += nuc900fb.o # Platform or fallback drivers go here obj-$(CONFIG_FB_UVESA) += uvesafb.o diff --git a/drivers/video/nuc900fb.c b/drivers/video/nuc900fb.c new file mode 100644 index 00000000000..6bf0d460a73 --- /dev/null +++ b/drivers/video/nuc900fb.c @@ -0,0 +1,779 @@ +/* + * + * 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 LCD Controller Driver + * Author: + * Wang Qiang (rurality.linux@gmail.com) 2009/12/11 + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "nuc900fb.h" + + +/* + * Initialize the nuc900 video (dual) buffer address + */ +static void nuc900fb_set_lcdaddr(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + void __iomem *regs = fbi->io; + unsigned long vbaddr1, vbaddr2; + + vbaddr1 = info->fix.smem_start; + vbaddr2 = info->fix.smem_start; + vbaddr2 += info->fix.line_length * info->var.yres; + + /* set frambuffer start phy addr*/ + writel(vbaddr1, regs + REG_LCM_VA_BADDR0); + writel(vbaddr2, regs + REG_LCM_VA_BADDR1); + + writel(fbi->regs.lcd_va_fbctrl, regs + REG_LCM_VA_FBCTRL); + writel(fbi->regs.lcd_va_scale, regs + REG_LCM_VA_SCALE); +} + +/* + * calculate divider for lcd div + */ +static unsigned int nuc900fb_calc_pixclk(struct nuc900fb_info *fbi, + unsigned long pixclk) +{ + unsigned long clk = fbi->clk_rate; + unsigned long long div; + + /* pixclk is in picseconds. our clock is in Hz*/ + /* div = (clk * pixclk)/10^12 */ + div = (unsigned long long)clk * pixclk; + div >>= 12; + do_div(div, 625 * 625UL * 625); + + dev_dbg(fbi->dev, "pixclk %ld, divisor is %lld\n", pixclk, div); + + return div; +} + +/* + * Check the video params of 'var'. + */ +static int nuc900fb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + struct nuc900fb_mach_info *mach_info = fbi->dev->platform_data; + struct nuc900fb_display *display = NULL; + struct nuc900fb_display *default_display = mach_info->displays + + mach_info->default_display; + int i; + + dev_dbg(fbi->dev, "check_var(var=%p, info=%p)\n", var, info); + + /* validate x/y resolution */ + /* choose default mode if possible */ + if (var->xres == default_display->xres && + var->yres == default_display->yres && + var->bits_per_pixel == default_display->bpp) + display = default_display; + else + for (i = 0; i < mach_info->num_displays; i++) + if (var->xres == mach_info->displays[i].xres && + var->yres == mach_info->displays[i].yres && + var->bits_per_pixel == mach_info->displays[i].bpp) { + display = mach_info->displays + i; + break; + } + + if (display == NULL) { + printk(KERN_ERR "wrong resolution or depth %dx%d at %d bit per pixel\n", + var->xres, var->yres, var->bits_per_pixel); + return -EINVAL; + } + + /* it should be the same size as the display */ + var->xres_virtual = display->xres; + var->yres_virtual = display->yres; + var->height = display->height; + var->width = display->width; + + /* copy lcd settings */ + var->pixclock = display->pixclock; + var->left_margin = display->left_margin; + var->right_margin = display->right_margin; + var->upper_margin = display->upper_margin; + var->lower_margin = display->lower_margin; + var->vsync_len = display->vsync_len; + var->hsync_len = display->hsync_len; + + var->transp.offset = 0; + var->transp.length = 0; + + fbi->regs.lcd_dccs = display->dccs; + fbi->regs.lcd_device_ctrl = display->devctl; + fbi->regs.lcd_va_fbctrl = display->fbctrl; + fbi->regs.lcd_va_scale = display->scale; + + /* set R/G/B possions */ + switch (var->bits_per_pixel) { + case 1: + case 2: + case 4: + case 8: + default: + var->red.offset = 0; + var->red.length = var->bits_per_pixel; + var->green = var->red; + var->blue = var->red; + break; + case 12: + var->red.length = 4; + var->green.length = 4; + var->blue.length = 4; + var->red.offset = 8; + var->green.offset = 4; + var->blue.offset = 0; + break; + case 16: + var->red.length = 5; + var->green.length = 6; + var->blue.length = 5; + var->red.offset = 11; + var->green.offset = 5; + var->blue.offset = 0; + break; + case 18: + var->red.length = 6; + var->green.length = 6; + var->blue.length = 6; + var->red.offset = 12; + var->green.offset = 6; + var->blue.offset = 0; + break; + case 32: + var->red.length = 8; + var->green.length = 8; + var->blue.length = 8; + var->red.offset = 16; + var->green.offset = 8; + var->blue.offset = 0; + break; + } + + return 0; +} + +/* + * Calculate lcd register values from var setting & save into hw + */ +static void nuc900fb_calculate_lcd_regs(const struct fb_info *info, + struct nuc900fb_hw *regs) +{ + const struct fb_var_screeninfo *var = &info->var; + int vtt = var->height + var->upper_margin + var->lower_margin; + int htt = var->width + var->left_margin + var->right_margin; + int hsync = var->width + var->right_margin; + int vsync = var->height + var->lower_margin; + + regs->lcd_crtc_size = LCM_CRTC_SIZE_VTTVAL(vtt) | + LCM_CRTC_SIZE_HTTVAL(htt); + regs->lcd_crtc_dend = LCM_CRTC_DEND_VDENDVAL(var->height) | + LCM_CRTC_DEND_HDENDVAL(var->width); + regs->lcd_crtc_hr = LCM_CRTC_HR_EVAL(var->width + 5) | + LCM_CRTC_HR_SVAL(var->width + 1); + regs->lcd_crtc_hsync = LCM_CRTC_HSYNC_EVAL(hsync + var->hsync_len) | + LCM_CRTC_HSYNC_SVAL(hsync); + regs->lcd_crtc_vr = LCM_CRTC_VR_EVAL(vsync + var->vsync_len) | + LCM_CRTC_VR_SVAL(vsync); + +} + +/* + * Activate (set) the controller from the given framebuffer + * information + */ +static void nuc900fb_activate_var(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + void __iomem *regs = fbi->io; + struct fb_var_screeninfo *var = &info->var; + int clkdiv; + + clkdiv = nuc900fb_calc_pixclk(fbi, var->pixclock) - 1; + if (clkdiv < 0) + clkdiv = 0; + + nuc900fb_calculate_lcd_regs(info, &fbi->regs); + + /* set the new lcd registers*/ + + dev_dbg(fbi->dev, "new lcd register set:\n"); + dev_dbg(fbi->dev, "dccs = 0x%08x\n", fbi->regs.lcd_dccs); + dev_dbg(fbi->dev, "dev_ctl = 0x%08x\n", fbi->regs.lcd_device_ctrl); + dev_dbg(fbi->dev, "crtc_size = 0x%08x\n", fbi->regs.lcd_crtc_size); + dev_dbg(fbi->dev, "crtc_dend = 0x%08x\n", fbi->regs.lcd_crtc_dend); + dev_dbg(fbi->dev, "crtc_hr = 0x%08x\n", fbi->regs.lcd_crtc_hr); + dev_dbg(fbi->dev, "crtc_hsync = 0x%08x\n", fbi->regs.lcd_crtc_hsync); + dev_dbg(fbi->dev, "crtc_vr = 0x%08x\n", fbi->regs.lcd_crtc_vr); + + writel(fbi->regs.lcd_device_ctrl, regs + REG_LCM_DEV_CTRL); + writel(fbi->regs.lcd_crtc_size, regs + REG_LCM_CRTC_SIZE); + writel(fbi->regs.lcd_crtc_dend, regs + REG_LCM_CRTC_DEND); + writel(fbi->regs.lcd_crtc_hr, regs + REG_LCM_CRTC_HR); + writel(fbi->regs.lcd_crtc_hsync, regs + REG_LCM_CRTC_HSYNC); + writel(fbi->regs.lcd_crtc_vr, regs + REG_LCM_CRTC_VR); + + /* set lcd address pointers */ + nuc900fb_set_lcdaddr(info); + + writel(fbi->regs.lcd_dccs, regs + REG_LCM_DCCS); +} + +/* + * Alters the hardware state. + * + */ +static int nuc900fb_set_par(struct fb_info *info) +{ + struct fb_var_screeninfo *var = &info->var; + + switch (var->bits_per_pixel) { + case 32: + case 24: + case 18: + case 16: + case 12: + info->fix.visual = FB_VISUAL_TRUECOLOR; + break; + case 1: + info->fix.visual = FB_VISUAL_MONO01; + break; + default: + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + break; + } + + info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; + + /* activate this new configuration */ + nuc900fb_activate_var(info); + return 0; +} + +static inline unsigned int chan_to_field(unsigned int chan, + struct fb_bitfield *bf) +{ + chan &= 0xffff; + chan >>= 16 - bf->length; + return chan << bf->offset; +} + +static int nuc900fb_setcolreg(unsigned regno, + unsigned red, unsigned green, unsigned blue, + unsigned transp, struct fb_info *info) +{ + unsigned int val; + + switch (info->fix.visual) { + case FB_VISUAL_TRUECOLOR: + /* true-colour, use pseuo-palette */ + if (regno < 16) { + u32 *pal = info->pseudo_palette; + + val = chan_to_field(red, &info->var.red); + val |= chan_to_field(green, &info->var.green); + val |= chan_to_field(blue, &info->var.blue); + pal[regno] = val; + } + break; + + default: + return 1; /* unknown type */ + } + return 0; +} + +/** + * nuc900fb_blank + * + */ +static int nuc900fb_blank(int blank_mode, struct fb_info *info) +{ + + return 0; +} + +static struct fb_ops nuc900fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = nuc900fb_check_var, + .fb_set_par = nuc900fb_set_par, + .fb_blank = nuc900fb_blank, + .fb_setcolreg = nuc900fb_setcolreg, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + + +static inline void modify_gpio(void __iomem *reg, + unsigned long set, unsigned long mask) +{ + unsigned long tmp; + tmp = readl(reg) & ~mask; + writel(tmp | set, reg); +} + +/* + * Initialise LCD-related registers + */ +static int nuc900fb_init_registers(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + struct nuc900fb_mach_info *mach_info = fbi->dev->platform_data; + void __iomem *regs = fbi->io; + + /*reset the display engine*/ + writel(0, regs + REG_LCM_DCCS); + writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_ENG_RST, + regs + REG_LCM_DCCS); + ndelay(100); + writel(readl(regs + REG_LCM_DCCS) & (~LCM_DCCS_ENG_RST), + regs + REG_LCM_DCCS); + ndelay(100); + + writel(0, regs + REG_LCM_DEV_CTRL); + + /* config gpio output */ + modify_gpio(W90X900_VA_GPIO + 0x54, mach_info->gpio_dir, + mach_info->gpio_dir_mask); + modify_gpio(W90X900_VA_GPIO + 0x58, mach_info->gpio_data, + mach_info->gpio_data_mask); + + return 0; +} + + +/* + * Alloc the SDRAM region of NUC900 for the frame buffer. + * The buffer should be a non-cached, non-buffered, memory region + * to allow palette and pixel writes without flushing the cache. + */ +static int __init nuc900fb_map_video_memory(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + dma_addr_t map_dma; + unsigned long map_size = PAGE_ALIGN(info->fix.smem_len); + + dev_dbg(fbi->dev, "nuc900fb_map_video_memory(fbi=%p) map_size %lu\n", + fbi, map_size); + + info->screen_base = dma_alloc_writecombine(fbi->dev, map_size, + &map_dma, GFP_KERNEL); + + if (!info->screen_base) + return -ENOMEM; + + memset(info->screen_base, 0x00, map_size); + info->fix.smem_start = map_dma; + + return 0; +} + +static inline void nuc900fb_unmap_video_memory(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + dma_free_writecombine(fbi->dev, PAGE_ALIGN(info->fix.smem_len), + info->screen_base, info->fix.smem_start); +} + +static irqreturn_t nuc900fb_irqhandler(int irq, void *dev_id) +{ + struct nuc900fb_info *fbi = dev_id; + void __iomem *regs = fbi->io; + void __iomem *irq_base = fbi->irq_base; + unsigned long lcdirq = readl(regs + REG_LCM_INT_CS); + + if (lcdirq & LCM_INT_CS_DISP_F_STATUS) { + writel(readl(irq_base) | 1<<30, irq_base); + + /* wait VA_EN low */ + if ((readl(regs + REG_LCM_DCCS) & + LCM_DCCS_SINGLE) == LCM_DCCS_SINGLE) + while ((readl(regs + REG_LCM_DCCS) & + LCM_DCCS_VA_EN) == LCM_DCCS_VA_EN) + ; + /* display_out-enable */ + writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_DISP_OUT_EN, + regs + REG_LCM_DCCS); + /* va-enable*/ + writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_VA_EN, + regs + REG_LCM_DCCS); + } else if (lcdirq & LCM_INT_CS_UNDERRUN_INT) { + writel(readl(irq_base) | LCM_INT_CS_UNDERRUN_INT, irq_base); + } else if (lcdirq & LCM_INT_CS_BUS_ERROR_INT) { + writel(readl(irq_base) | LCM_INT_CS_BUS_ERROR_INT, irq_base); + } + + return IRQ_HANDLED; +} + +#ifdef CONFIG_CPU_FREQ + +static int nuc900fb_cpufreq_transition(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct nuc900fb_info *info; + struct fb_info *fbinfo; + long delta_f; + info = container_of(nb, struct nuc900fb_info, freq_transition); + fbinfo = platform_get_drvdata(to_platform_device(info->dev)); + + delta_f = info->clk_rate - clk_get_rate(info->clk); + + if ((val == CPUFREQ_POSTCHANGE && delta_f > 0) || + (val == CPUFREQ_PRECHANGE && delta_f < 0)) { + info->clk_rate = clk_get_rate(info->clk); + nuc900fb_activate_var(fbinfo); + } + + return 0; +} + +static inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) +{ + fbi->freq_transition.notifier_call = nuc900fb_cpufreq_transition; + return cpufreq_register_notifier(&fbi->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +} + +static inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *fbi) +{ + cpufreq_unregister_notifier(&fbi->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +} +#else +static inline int nuc900fb_cpufreq_transition(struct notifier_block *nb, + unsigned long val, void *data) +{ + return 0; +} + +static inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) +{ + return 0; +} + +static inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *info) +{ +} +#endif + +static char driver_name[] = "nuc900fb"; + +static int __devinit nuc900fb_probe(struct platform_device *pdev) +{ + struct nuc900fb_info *fbi; + struct nuc900fb_display *display; + struct fb_info *fbinfo; + struct nuc900fb_mach_info *mach_info; + struct resource *res; + int ret; + int irq; + int i; + int size; + + dev_dbg(&pdev->dev, "devinit\n"); + mach_info = pdev->dev.platform_data; + if (mach_info == NULL) { + dev_err(&pdev->dev, + "no platform data for lcd, cannot attach\n"); + return -EINVAL; + } + + if (mach_info->default_display > mach_info->num_displays) { + dev_err(&pdev->dev, + "default display No. is %d but only %d displays \n", + mach_info->default_display, mach_info->num_displays); + return -EINVAL; + } + + + display = mach_info->displays + mach_info->default_display; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "no irq for device\n"); + return -ENOENT; + } + + fbinfo = framebuffer_alloc(sizeof(struct nuc900fb_info), &pdev->dev); + if (!fbinfo) + return -ENOMEM; + + platform_set_drvdata(pdev, fbinfo); + + fbi = fbinfo->par; + fbi->dev = &pdev->dev; + +#ifdef CONFIG_CPU_NUC950 + fbi->drv_type = LCDDRV_NUC950; +#endif + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + size = (res->end - res->start) + 1; + fbi->mem = request_mem_region(res->start, size, pdev->name); + if (fbi->mem == NULL) { + dev_err(&pdev->dev, "failed to alloc memory region\n"); + ret = -ENOENT; + goto free_fb; + } + + fbi->io = ioremap(res->start, size); + if (fbi->io == NULL) { + dev_err(&pdev->dev, "ioremap() of lcd registers failed\n"); + ret = -ENXIO; + goto release_mem_region; + } + + fbi->irq_base = fbi->io + REG_LCM_INT_CS; + + + /* Stop the LCD */ + writel(0, fbi->io + REG_LCM_DCCS); + + /* fill the fbinfo*/ + strcpy(fbinfo->fix.id, driver_name); + fbinfo->fix.type = FB_TYPE_PACKED_PIXELS; + fbinfo->fix.type_aux = 0; + fbinfo->fix.xpanstep = 0; + fbinfo->fix.ypanstep = 0; + fbinfo->fix.ywrapstep = 0; + fbinfo->fix.accel = FB_ACCEL_NONE; + fbinfo->var.nonstd = 0; + fbinfo->var.activate = FB_ACTIVATE_NOW; + fbinfo->var.accel_flags = 0; + fbinfo->var.vmode = FB_VMODE_NONINTERLACED; + fbinfo->fbops = &nuc900fb_ops; + fbinfo->flags = FBINFO_FLAG_DEFAULT; + fbinfo->pseudo_palette = &fbi->pseudo_pal; + + ret = request_irq(irq, nuc900fb_irqhandler, IRQF_DISABLED, + pdev->name, fbinfo); + if (ret) { + dev_err(&pdev->dev, "cannot register irq handler %d -err %d\n", + irq, ret); + ret = -EBUSY; + goto release_regs; + } + + nuc900_driver_clksrc_div(&pdev->dev, "ext", 0x2); + + fbi->clk = clk_get(&pdev->dev, NULL); + if (!fbi->clk || IS_ERR(fbi->clk)) { + printk(KERN_ERR "nuc900-lcd:failed to get lcd clock source\n"); + ret = -ENOENT; + goto release_irq; + } + + clk_enable(fbi->clk); + dev_dbg(&pdev->dev, "got and enabled clock\n"); + + fbi->clk_rate = clk_get_rate(fbi->clk); + + /* calutate the video buffer size */ + for (i = 0; i < mach_info->num_displays; i++) { + unsigned long smem_len = mach_info->displays[i].xres; + smem_len *= mach_info->displays[i].yres; + smem_len *= mach_info->displays[i].bpp; + smem_len >>= 3; + if (fbinfo->fix.smem_len < smem_len) + fbinfo->fix.smem_len = smem_len; + } + + /* Initialize Video Memory */ + ret = nuc900fb_map_video_memory(fbinfo); + if (ret) { + printk(KERN_ERR "Failed to allocate video RAM: %x\n", ret); + goto release_clock; + } + + dev_dbg(&pdev->dev, "got video memory\n"); + + fbinfo->var.xres = display->xres; + fbinfo->var.yres = display->yres; + fbinfo->var.bits_per_pixel = display->bpp; + + nuc900fb_init_registers(fbinfo); + + nuc900fb_check_var(&fbinfo->var, fbinfo); + + ret = nuc900fb_cpufreq_register(fbi); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to register cpufreq\n"); + goto free_video_memory; + } + + ret = register_framebuffer(fbinfo); + if (ret) { + printk(KERN_ERR "failed to register framebuffer device: %d\n", + ret); + goto free_cpufreq; + } + + printk(KERN_INFO "fb%d: %s frame buffer device\n", + fbinfo->node, fbinfo->fix.id); + + return 0; + +free_cpufreq: + nuc900fb_cpufreq_deregister(fbi); +free_video_memory: + nuc900fb_unmap_video_memory(fbinfo); +release_clock: + clk_disable(fbi->clk); + clk_put(fbi->clk); +release_irq: + free_irq(irq, fbi); +release_regs: + iounmap(fbi->io); +release_mem_region: + release_mem_region((unsigned long)fbi->mem, size); +free_fb: + framebuffer_release(fbinfo); + return ret; +} + +/* + * shutdown the lcd controller + */ +static void nuc900fb_stop_lcd(struct fb_info *info) +{ + struct nuc900fb_info *fbi = info->par; + void __iomem *regs = fbi->io; + + writel((~LCM_DCCS_DISP_INT_EN) | (~LCM_DCCS_VA_EN) | (~LCM_DCCS_OSD_EN), + regs + REG_LCM_DCCS); +} + +/* + * Cleanup + */ +static int nuc900fb_remove(struct platform_device *pdev) +{ + struct fb_info *fbinfo = platform_get_drvdata(pdev); + struct nuc900fb_info *fbi = fbinfo->par; + int irq; + + nuc900fb_stop_lcd(fbinfo); + msleep(1); + + nuc900fb_unmap_video_memory(fbinfo); + + iounmap(fbi->io); + + irq = platform_get_irq(pdev, 0); + free_irq(irq, fbi); + + release_resource(fbi->mem); + kfree(fbi->mem); + + platform_set_drvdata(pdev, NULL); + framebuffer_release(fbinfo); + + return 0; +} + +#ifdef CONFIG_PM + +/* + * suspend and resume support for the lcd controller + */ + +static int nuc900fb_suspend(struct platform_device *dev, pm_message_t state) +{ + struct fb_info *fbinfo = platform_get_drvdata(dev); + struct nuc900fb_info *info = fbinfo->par; + + nuc900fb_stop_lcd(); + msleep(1); + clk_disable(info->clk); + return 0; +} + +static int nuc900fb_resume(struct platform_device *dev) +{ + struct fb_info *fbinfo = platform_get_drvdata(dev); + struct nuc900fb_info *fbi = fbinfo->par; + + printk(KERN_INFO "nuc900fb resume\n"); + + clk_enable(fbi->clk); + msleep(1); + + nuc900fb_init_registers(fbinfo); + nuc900fb_activate_var(bfinfo); + + return 0; +} + +#else +#define nuc900fb_suspend NULL +#define nuc900fb_resume NULL +#endif + +static struct platform_driver nuc900fb_driver = { + .probe = nuc900fb_probe, + .remove = nuc900fb_remove, + .suspend = nuc900fb_suspend, + .resume = nuc900fb_resume, + .driver = { + .name = "nuc900-lcd", + .owner = THIS_MODULE, + }, +}; + +int __devinit nuc900fb_init(void) +{ + return platform_driver_register(&nuc900fb_driver); +} + +static void __exit nuc900fb_cleanup(void) +{ + platform_driver_unregister(&nuc900fb_driver); +} + +module_init(nuc900fb_init); +module_exit(nuc900fb_cleanup); + +MODULE_DESCRIPTION("Framebuffer driver for the NUC900"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/nuc900fb.h b/drivers/video/nuc900fb.h new file mode 100644 index 00000000000..6c23aa3d3b8 --- /dev/null +++ b/drivers/video/nuc900fb.h @@ -0,0 +1,55 @@ +/* + * + * 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. + * + * Auther: + * Wang Qiang(rurality.linux@gmail.com) 2009/12/16 + */ + +#ifndef __NUC900FB_H +#define __NUC900FB_H + +#include +#include + +enum nuc900_lcddrv_type { + LCDDRV_NUC910, + LCDDRV_NUC930, + LCDDRV_NUC932, + LCDDRV_NUC950, + LCDDRV_NUC960, +}; + + +#define PALETTE_BUFFER_SIZE 256 +#define PALETTE_BUFF_CLEAR (0x80000000) /* entry is clear/invalid */ + +struct nuc900fb_info { + struct device *dev; + struct clk *clk; + + struct resource *mem; + void __iomem *io; + void __iomem *irq_base; + int drv_type; + struct nuc900fb_hw regs; + unsigned long clk_rate; + +#ifdef CONFIG_CPU_FREQ + struct notifier_block freq_transition; +#endif + + /* keep these registers in case we need to re-write palette */ + u32 palette_buffer[PALETTE_BUFFER_SIZE]; + u32 pseudo_pal[16]; +}; + +int nuc900fb_init(void); + +#endif /* __NUC900FB_H */ -- 2.41.0