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>
This commit is contained in:
Wang Qiang
Linus Torvalds
parent
91d4e0a4c8
commit
8661970875
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@ -590,8 +590,40 @@ CONFIG_SSB_POSSIBLE=y
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#
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# CONFIG_VGASTATE is not set
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# CONFIG_VIDEO_OUTPUT_CONTROL is not set
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# CONFIG_FB is not set
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# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
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CONFIG_FB=y
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# CONFIG_FIRMWARE_EDID is not set
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# CONFIG_FB_DDC is not set
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# CONFIG_FB_BOOT_VESA_SUPPORT is not set
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CONFIG_FB_CFB_FILLRECT=y
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CONFIG_FB_CFB_COPYAREA=y
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CONFIG_FB_CFB_IMAGEBLIT=y
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# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
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# CONFIG_FB_SYS_FILLRECT is not set
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# CONFIG_FB_SYS_COPYAREA is not set
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# CONFIG_FB_SYS_IMAGEBLIT is not set
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# CONFIG_FB_FOREIGN_ENDIAN is not set
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# CONFIG_FB_SYS_FOPS is not set
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# CONFIG_FB_SVGALIB is not set
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# CONFIG_FB_MACMODES is not set
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# CONFIG_FB_BACKLIGHT is not set
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# CONFIG_FB_MODE_HELPERS is not set
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# CONFIG_FB_TILEBLITTING is not set
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#
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# Frame buffer hardware drivers
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#
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# CONFIG_FB_S1D13XXX is not set
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CONFIG_FB_NUC900=y
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CONFIG_GPM1040A0_320X240=y
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CONFIG_FB_NUC900_DEBUG=y
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# CONFIG_FB_VIRTUAL is not set
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# CONFIG_FB_METRONOME is not set
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# CONFIG_FB_MB862XX is not set
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# CONFIG_FB_BROADSHEET is not set
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# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
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#
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# Display device support
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@ -603,6 +635,25 @@ CONFIG_SSB_POSSIBLE=y
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#
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# CONFIG_VGA_CONSOLE is not set
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CONFIG_DUMMY_CONSOLE=y
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CONFIG_FRAMEBUFFER_CONSOLE=y
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CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
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# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
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CONFIG_FONTS=y
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# CONFIG_FONT_8x8 is not set
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CONFIG_FONT_8x16=y
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# CONFIG_FONT_6x11 is not set
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# CONFIG_FONT_7x14 is not set
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# CONFIG_FONT_PEARL_8x8 is not set
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# CONFIG_FONT_ACORN_8x8 is not set
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# CONFIG_FONT_MINI_4x6 is not set
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# CONFIG_FONT_SUN8x16 is not set
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# CONFIG_FONT_SUN12x22 is not set
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# CONFIG_FONT_10x18 is not set
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CONFIG_LOGO=y
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# CONFIG_LOGO_LINUX_MONO is not set
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# CONFIG_LOGO_LINUX_VGA16 is not set
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CONFIG_LOGO_LINUX_CLUT224=y
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# CONFIG_SOUND is not set
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# CONFIG_HID_SUPPORT is not set
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CONFIG_USB_SUPPORT=y
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@ -57,3 +57,4 @@ extern struct platform_device nuc900_device_fmi;
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extern struct platform_device nuc900_device_kpi;
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extern struct platform_device nuc900_device_rtc;
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extern struct platform_device nuc900_device_ts;
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extern struct platform_device nuc900_device_lcd;
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@ -34,6 +34,7 @@
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#include <mach/regs-serial.h>
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#include <mach/nuc900_spi.h>
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#include <mach/map.h>
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#include <mach/fb.h>
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#include "cpu.h"
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@ -380,6 +381,47 @@ struct platform_device nuc900_device_kpi = {
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.resource = nuc900_kpi_resource,
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};
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#ifdef CONFIG_FB_NUC900
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static struct resource nuc900_lcd_resource[] = {
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[0] = {
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.start = W90X900_PA_LCD,
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.end = W90X900_PA_LCD + W90X900_SZ_LCD - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_LCD,
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.end = IRQ_LCD,
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.flags = IORESOURCE_IRQ,
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}
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};
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static u64 nuc900_device_lcd_dmamask = -1;
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struct platform_device nuc900_device_lcd = {
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.name = "nuc900-lcd",
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.id = -1,
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.num_resources = ARRAY_SIZE(nuc900_lcd_resource),
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.resource = nuc900_lcd_resource,
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.dev = {
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.dma_mask = &nuc900_device_lcd_dmamask,
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.coherent_dma_mask = -1,
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}
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};
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void nuc900_fb_set_platdata(struct nuc900fb_mach_info *pd)
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{
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struct nuc900fb_mach_info *npd;
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npd = kmalloc(sizeof(*npd), GFP_KERNEL);
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if (npd) {
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memcpy(npd, pd, sizeof(*npd));
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nuc900_device_lcd.dev.platform_data = npd;
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} else {
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printk(KERN_ERR "no memory for LCD platform data\n");
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}
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}
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#endif
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/*Here should be your evb resourse,such as LCD*/
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static struct platform_device *nuc900_public_dev[] __initdata = {
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@ -0,0 +1,83 @@
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/* linux/include/asm/arch-nuc900/fb.h
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*
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* Copyright (c) 2008 Nuvoton technology corporation
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Changelog:
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*
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* 2008/08/26 vincen.zswan modify this file for LCD.
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*/
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#ifndef __ASM_ARM_FB_H
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#define __ASM_ARM_FB_H
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/* LCD Controller Hardware Desc */
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struct nuc900fb_hw {
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unsigned int lcd_dccs;
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unsigned int lcd_device_ctrl;
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unsigned int lcd_mpulcd_cmd;
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unsigned int lcd_int_cs;
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unsigned int lcd_crtc_size;
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unsigned int lcd_crtc_dend;
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unsigned int lcd_crtc_hr;
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unsigned int lcd_crtc_hsync;
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unsigned int lcd_crtc_vr;
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unsigned int lcd_va_baddr0;
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unsigned int lcd_va_baddr1;
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unsigned int lcd_va_fbctrl;
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unsigned int lcd_va_scale;
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unsigned int lcd_va_test;
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unsigned int lcd_va_win;
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unsigned int lcd_va_stuff;
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};
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/* LCD Display Description */
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struct nuc900fb_display {
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/* LCD Image type */
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unsigned type;
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/* LCD Screen Size */
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unsigned short width;
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unsigned short height;
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/* LCD Screen Info */
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unsigned short xres;
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unsigned short yres;
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unsigned short bpp;
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unsigned long pixclock;
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unsigned short left_margin;
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unsigned short right_margin;
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unsigned short hsync_len;
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unsigned short upper_margin;
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unsigned short lower_margin;
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unsigned short vsync_len;
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/* hardware special register value */
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unsigned int dccs;
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unsigned int devctl;
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unsigned int fbctrl;
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unsigned int scale;
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};
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struct nuc900fb_mach_info {
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struct nuc900fb_display *displays;
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unsigned num_displays;
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unsigned default_display;
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/* GPIO Setting Info */
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unsigned gpio_dir;
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unsigned gpio_dir_mask;
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unsigned gpio_data;
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unsigned gpio_data_mask;
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};
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extern void __init nuc900_fb_set_platdata(struct nuc900fb_mach_info *);
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#endif /* __ASM_ARM_FB_H */
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@ -0,0 +1,253 @@
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/*
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* arch/arm/mach-w90x900/include/mach/regs-serial.h
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*
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* Copyright (c) 2009 Nuvoton technology corporation
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Description:
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* Nuvoton Display, LCM Register list
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* Author: Wang Qiang (rurality.linux@gmail.com) 2009/12/11
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*
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*/
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#ifndef __ASM_ARM_W90X900_REGS_LDM_H
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#define __ASM_ARM_W90X900_REGS_LDM_H
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#include <mach/map.h>
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/* Display Controller Control/Status Register */
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#define REG_LCM_DCCS (0x00)
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#define LCM_DCCS_ENG_RST (1 << 0)
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#define LCM_DCCS_VA_EN (1 << 1)
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#define LCM_DCCS_OSD_EN (1 << 2)
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#define LCM_DCCS_DISP_OUT_EN (1 << 3)
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#define LCM_DCCS_DISP_INT_EN (1 << 4)
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#define LCM_DCCS_CMD_ON (1 << 5)
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#define LCM_DCCS_FIELD_INTR (1 << 6)
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#define LCM_DCCS_SINGLE (1 << 7)
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enum LCM_DCCS_VA_SRC {
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LCM_DCCS_VA_SRC_YUV422 = (0 << 8),
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LCM_DCCS_VA_SRC_YCBCR422 = (1 << 8),
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LCM_DCCS_VA_SRC_RGB888 = (2 << 8),
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LCM_DCCS_VA_SRC_RGB666 = (3 << 8),
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LCM_DCCS_VA_SRC_RGB565 = (4 << 8),
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LCM_DCCS_VA_SRC_RGB444LOW = (5 << 8),
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LCM_DCCS_VA_SRC_RGB444HIGH = (7 << 8)
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};
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/* Display Device Control Register */
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#define REG_LCM_DEV_CTRL (0x04)
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enum LCM_DEV_CTRL_SWAP_YCbCr {
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LCM_DEV_CTRL_SWAP_UYVY = (0 << 1),
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LCM_DEV_CTRL_SWAP_YUYV = (1 << 1),
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LCM_DEV_CTRL_SWAP_VYUY = (2 << 1),
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LCM_DEV_CTRL_SWAP_YVYU = (3 << 1)
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};
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enum LCM_DEV_CTRL_RGB_SHIFT {
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LCM_DEV_CTRL_RGB_SHIFT_NOT = (0 << 3),
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LCM_DEV_CTRL_RGB_SHIFT_ONECYCLE = (1 << 3),
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LCM_DEV_CTRL_RGB_SHIFT_TWOCYCLE = (2 << 3),
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LCM_DEV_CTRL_RGB_SHIFT_NOT_DEF = (3 << 3)
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};
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enum LCM_DEV_CTRL_DEVICE {
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LCM_DEV_CTRL_DEVICE_YUV422 = (0 << 5),
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LCM_DEV_CTRL_DEVICE_YUV444 = (1 << 5),
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LCM_DEV_CTRL_DEVICE_UNIPAC = (4 << 5),
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LCM_DEV_CTRL_DEVICE_SEIKO_EPSON = (5 << 5),
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LCM_DEV_CTRL_DEVICE_HIGH_COLOR = (6 << 5),
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LCM_DEV_CTRL_DEVICE_MPU = (7 << 5)
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};
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#define LCM_DEV_CTRL_LCD_DDA (8)
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#define LCM_DEV_CTRL_YUV2CCIR (16)
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enum LCM_DEV_CTRL_LCD_SEL {
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LCM_DEV_CTRL_LCD_SEL_RGB_GBR = (0 << 17),
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LCM_DEV_CTRL_LCD_SEL_BGR_RBG = (1 << 17),
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LCM_DEV_CTRL_LCD_SEL_GBR_RGB = (2 << 17),
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LCM_DEV_CTRL_LCD_SEL_RBG_BGR = (3 << 17)
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};
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enum LCM_DEV_CTRL_FAL_D {
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LCM_DEV_CTRL_FAL_D_FALLING = (0 << 19),
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LCM_DEV_CTRL_FAL_D_RISING = (1 << 19),
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};
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enum LCM_DEV_CTRL_H_POL {
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LCM_DEV_CTRL_H_POL_LOW = (0 << 20),
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LCM_DEV_CTRL_H_POL_HIGH = (1 << 20),
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};
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enum LCM_DEV_CTRL_V_POL {
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LCM_DEV_CTRL_V_POL_LOW = (0 << 21),
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LCM_DEV_CTRL_V_POL_HIGH = (1 << 21),
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};
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enum LCM_DEV_CTRL_VR_LACE {
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LCM_DEV_CTRL_VR_LACE_NINTERLACE = (0 << 22),
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LCM_DEV_CTRL_VR_LACE_INTERLACE = (1 << 22),
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};
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enum LCM_DEV_CTRL_LACE {
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LCM_DEV_CTRL_LACE_NINTERLACE = (0 << 23),
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LCM_DEV_CTRL_LACE_INTERLACE = (1 << 23),
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};
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enum LCM_DEV_CTRL_RGB_SCALE {
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LCM_DEV_CTRL_RGB_SCALE_4096 = (0 << 24),
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LCM_DEV_CTRL_RGB_SCALE_65536 = (1 << 24),
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LCM_DEV_CTRL_RGB_SCALE_262144 = (2 << 24),
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LCM_DEV_CTRL_RGB_SCALE_16777216 = (3 << 24),
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};
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enum LCM_DEV_CTRL_DBWORD {
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LCM_DEV_CTRL_DBWORD_HALFWORD = (0 << 26),
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LCM_DEV_CTRL_DBWORD_FULLWORD = (1 << 26),
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};
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enum LCM_DEV_CTRL_MPU68 {
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LCM_DEV_CTRL_MPU68_80_SERIES = (0 << 27),
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LCM_DEV_CTRL_MPU68_68_SERIES = (1 << 27),
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};
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enum LCM_DEV_CTRL_DE_POL {
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LCM_DEV_CTRL_DE_POL_HIGH = (0 << 28),
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LCM_DEV_CTRL_DE_POL_LOW = (1 << 28),
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};
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#define LCM_DEV_CTRL_CMD16 (29)
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#define LCM_DEV_CTRL_CM16t18 (30)
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#define LCM_DEV_CTRL_CMD_LOW (31)
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/* MPU-Interface LCD Write Command */
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#define REG_LCM_MPU_CMD (0x08)
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/* Interrupt Control/Status Register */
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#define REG_LCM_INT_CS (0x0c)
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#define LCM_INT_CS_DISP_F_EN (1 << 0)
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#define LCM_INT_CS_UNDERRUN_EN (1 << 1)
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#define LCM_INT_CS_BUS_ERROR_INT (1 << 28)
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#define LCM_INT_CS_UNDERRUN_INT (1 << 29)
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#define LCM_INT_CS_DISP_F_STATUS (1 << 30)
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#define LCM_INT_CS_DISP_F_INT (1 << 31)
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/* CRTC Display Size Control Register */
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#define REG_LCM_CRTC_SIZE (0x10)
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#define LCM_CRTC_SIZE_VTTVAL(x) ((x) << 16)
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#define LCM_CRTC_SIZE_HTTVAL(x) ((x) << 0)
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/* CRTC Display Enable End */
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#define REG_LCM_CRTC_DEND (0x14)
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#define LCM_CRTC_DEND_VDENDVAL(x) ((x) << 16)
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#define LCM_CRTC_DEND_HDENDVAL(x) ((x) << 0)
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/* CRTC Internal Horizontal Retrace Control Register */
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#define REG_LCM_CRTC_HR (0x18)
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#define LCM_CRTC_HR_EVAL(x) ((x) << 16)
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#define LCM_CRTC_HR_SVAL(x) ((x) << 0)
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/* CRTC Horizontal Sync Control Register */
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#define REG_LCM_CRTC_HSYNC (0x1C)
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#define LCM_CRTC_HSYNC_SHIFTVAL(x) ((x) << 30)
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#define LCM_CRTC_HSYNC_EVAL(x) ((x) << 16)
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#define LCM_CRTC_HSYNC_SVAL(x) ((x) << 0)
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/* CRTC Internal Vertical Retrace Control Register */
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#define REG_LCM_CRTC_VR (0x20)
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#define LCM_CRTC_VR_EVAL(x) ((x) << 16)
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#define LCM_CRTC_VR_SVAL(x) ((x) << 0)
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/* Video Stream Frame Buffer-0 Starting Address */
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#define REG_LCM_VA_BADDR0 (0x24)
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/* Video Stream Frame Buffer-1 Starting Address */
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#define REG_LCM_VA_BADDR1 (0x28)
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/* Video Stream Frame Buffer Control Register */
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#define REG_LCM_VA_FBCTRL (0x2C)
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#define LCM_VA_FBCTRL_IO_REGION_HALF (1 << 28)
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#define LCM_VA_FBCTRL_FIELD_DUAL (1 << 29)
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#define LCM_VA_FBCTRL_START_BUF (1 << 30)
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#define LCM_VA_FBCTRL_DB_EN (1 << 31)
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/* Video Stream Scaling Control Register */
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#define REG_LCM_VA_SCALE (0x30)
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#define LCM_VA_SCALE_XCOPY_INTERPOLATION (0 << 15)
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#define LCM_VA_SCALE_XCOPY_DUPLICATION (1 << 15)
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/* Image Stream Active Window Coordinates */
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#define REG_LCM_VA_WIN (0x38)
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/* Image Stream Stuff Pixel */
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#define REG_LCM_VA_STUFF (0x3C)
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/* OSD Window Starting Coordinates */
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#define REG_LCM_OSD_WINS (0x40)
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/* OSD Window Ending Coordinates */
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#define REG_LCM_OSD_WINE (0x44)
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/* OSD Stream Frame Buffer Starting Address */
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#define REG_LCM_OSD_BADDR (0x48)
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/* OSD Stream Frame Buffer Control Register */
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#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 */
|
||||
|
|
@ -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")
|
||||
|
|
|
|||
|
|
@ -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 */
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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 <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/wait.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/cpufreq.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/device.h>
|
||||
|
||||
#include <mach/map.h>
|
||||
#include <mach/regs-clock.h>
|
||||
#include <mach/regs-ldm.h>
|
||||
#include <mach/fb.h>
|
||||
#include <mach/clkdev.h>
|
||||
|
||||
#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");
|
||||
|
|
@ -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 <mach/map.h>
|
||||
#include <mach/fb.h>
|
||||
|
||||
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 */
|
||||
Reference in New Issue