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498 lines
11 KiB
498 lines
11 KiB
/* |
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* linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device |
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* |
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* (C) 1999 Mihai Spatar |
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* (C) 2000 YAEGASHI Takeshi |
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* (C) 2003, 2004 Paul Mundt |
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* (C) 2003, 2004, 2006 Andriy Skulysh |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive for |
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* more details. |
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*/ |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/string.h> |
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#include <linux/mm.h> |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <linux/platform_device.h> |
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#include <linux/fb.h> |
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#include <asm/machvec.h> |
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#include <linux/uaccess.h> |
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#include <asm/io.h> |
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#include <asm/hd64461.h> |
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#include <cpu/dac.h> |
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#define WIDTH 640 |
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static struct fb_var_screeninfo hitfb_var = { |
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.activate = FB_ACTIVATE_NOW, |
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.height = -1, |
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.width = -1, |
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.vmode = FB_VMODE_NONINTERLACED, |
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}; |
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static struct fb_fix_screeninfo hitfb_fix = { |
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.id = "Hitachi HD64461", |
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.type = FB_TYPE_PACKED_PIXELS, |
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.accel = FB_ACCEL_NONE, |
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}; |
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static inline void hitfb_accel_wait(void) |
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{ |
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while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ; |
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} |
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static inline void hitfb_accel_start(int truecolor) |
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{ |
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if (truecolor) { |
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fb_writew(6, HD64461_GRCFGR); |
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} else { |
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fb_writew(7, HD64461_GRCFGR); |
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} |
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} |
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static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy, |
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u16 width, u16 height) |
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{ |
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u32 saddr = WIDTH * dy + dx; |
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if (truecolor) |
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saddr <<= 1; |
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fb_writew(width-1, HD64461_BBTDWR); |
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fb_writew(height-1, HD64461_BBTDHR); |
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fb_writew(saddr & 0xffff, HD64461_BBTDSARL); |
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fb_writew(saddr >> 16, HD64461_BBTDSARH); |
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} |
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static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx, |
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u16 dy, u16 width, u16 height, u16 rop, |
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u32 mask_addr) |
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{ |
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u32 saddr, daddr; |
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u32 maddr = 0; |
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height--; |
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width--; |
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fb_writew(rop, HD64461_BBTROPR); |
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if ((sy < dy) || ((sy == dy) && (sx <= dx))) { |
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saddr = WIDTH * (sy + height) + sx + width; |
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daddr = WIDTH * (dy + height) + dx + width; |
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if (mask_addr) { |
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if (truecolor) |
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maddr = ((width >> 3) + 1) * (height + 1) - 1; |
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else |
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maddr = |
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(((width >> 4) + 1) * (height + 1) - 1) * 2; |
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fb_writew((1 << 5) | 1, HD64461_BBTMDR); |
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} else |
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fb_writew(1, HD64461_BBTMDR); |
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} else { |
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saddr = WIDTH * sy + sx; |
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daddr = WIDTH * dy + dx; |
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if (mask_addr) { |
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fb_writew((1 << 5), HD64461_BBTMDR); |
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} else { |
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fb_writew(0, HD64461_BBTMDR); |
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} |
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} |
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if (truecolor) { |
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saddr <<= 1; |
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daddr <<= 1; |
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} |
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fb_writew(width, HD64461_BBTDWR); |
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fb_writew(height, HD64461_BBTDHR); |
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fb_writew(saddr & 0xffff, HD64461_BBTSSARL); |
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fb_writew(saddr >> 16, HD64461_BBTSSARH); |
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fb_writew(daddr & 0xffff, HD64461_BBTDSARL); |
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fb_writew(daddr >> 16, HD64461_BBTDSARH); |
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if (mask_addr) { |
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maddr += mask_addr; |
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fb_writew(maddr & 0xffff, HD64461_BBTMARL); |
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fb_writew(maddr >> 16, HD64461_BBTMARH); |
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} |
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hitfb_accel_start(truecolor); |
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} |
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static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) |
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{ |
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if (rect->rop != ROP_COPY) |
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cfb_fillrect(p, rect); |
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else { |
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hitfb_accel_wait(); |
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fb_writew(0x00f0, HD64461_BBTROPR); |
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fb_writew(16, HD64461_BBTMDR); |
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if (p->var.bits_per_pixel == 16) { |
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fb_writew(((u32 *) (p->pseudo_palette))[rect->color], |
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HD64461_GRSCR); |
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hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width, |
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rect->height); |
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hitfb_accel_start(1); |
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} else { |
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fb_writew(rect->color, HD64461_GRSCR); |
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hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width, |
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rect->height); |
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hitfb_accel_start(0); |
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} |
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} |
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} |
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static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) |
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{ |
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hitfb_accel_wait(); |
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hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy, |
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area->dx, area->dy, area->width, area->height, |
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0x00cc, 0); |
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} |
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static int hitfb_pan_display(struct fb_var_screeninfo *var, |
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struct fb_info *info) |
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{ |
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int xoffset = var->xoffset; |
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int yoffset = var->yoffset; |
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if (xoffset != 0) |
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return -EINVAL; |
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fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR); |
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return 0; |
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} |
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int hitfb_blank(int blank_mode, struct fb_info *info) |
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{ |
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unsigned short v; |
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if (blank_mode) { |
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v = fb_readw(HD64461_LDR1); |
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v &= ~HD64461_LDR1_DON; |
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fb_writew(v, HD64461_LDR1); |
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v = fb_readw(HD64461_LCDCCR); |
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v |= HD64461_LCDCCR_MOFF; |
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fb_writew(v, HD64461_LCDCCR); |
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v = fb_readw(HD64461_STBCR); |
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v |= HD64461_STBCR_SLCDST; |
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fb_writew(v, HD64461_STBCR); |
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} else { |
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v = fb_readw(HD64461_STBCR); |
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v &= ~HD64461_STBCR_SLCDST; |
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fb_writew(v, HD64461_STBCR); |
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v = fb_readw(HD64461_LCDCCR); |
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v &= ~(HD64461_LCDCCR_MOFF | HD64461_LCDCCR_STREQ); |
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fb_writew(v, HD64461_LCDCCR); |
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do { |
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v = fb_readw(HD64461_LCDCCR); |
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} while(v&HD64461_LCDCCR_STBACK); |
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v = fb_readw(HD64461_LDR1); |
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v |= HD64461_LDR1_DON; |
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fb_writew(v, HD64461_LDR1); |
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} |
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return 0; |
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} |
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static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
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unsigned blue, unsigned transp, struct fb_info *info) |
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{ |
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if (regno >= 256) |
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return 1; |
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switch (info->var.bits_per_pixel) { |
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case 8: |
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fb_writew(regno << 8, HD64461_CPTWAR); |
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fb_writew(red >> 10, HD64461_CPTWDR); |
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fb_writew(green >> 10, HD64461_CPTWDR); |
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fb_writew(blue >> 10, HD64461_CPTWDR); |
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break; |
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case 16: |
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if (regno >= 16) |
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return 1; |
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((u32 *) (info->pseudo_palette))[regno] = |
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((red & 0xf800)) | |
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((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); |
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break; |
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} |
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return 0; |
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} |
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static int hitfb_sync(struct fb_info *info) |
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{ |
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hitfb_accel_wait(); |
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return 0; |
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} |
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static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
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{ |
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int maxy; |
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var->xres = info->var.xres; |
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var->xres_virtual = info->var.xres; |
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var->yres = info->var.yres; |
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if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16)) |
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var->bits_per_pixel = info->var.bits_per_pixel; |
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if (var->yres_virtual < var->yres) |
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var->yres_virtual = var->yres; |
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maxy = info->fix.smem_len / var->xres; |
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if (var->bits_per_pixel == 16) |
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maxy /= 2; |
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if (var->yres_virtual > maxy) |
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var->yres_virtual = maxy; |
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var->xoffset = 0; |
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var->yoffset = 0; |
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switch (var->bits_per_pixel) { |
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case 8: |
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var->red.offset = 0; |
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var->red.length = 8; |
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var->green.offset = 0; |
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var->green.length = 8; |
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var->blue.offset = 0; |
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var->blue.length = 8; |
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var->transp.offset = 0; |
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var->transp.length = 0; |
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break; |
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case 16: /* RGB 565 */ |
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var->red.offset = 11; |
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var->red.length = 5; |
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var->green.offset = 5; |
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var->green.length = 6; |
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var->blue.offset = 0; |
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var->blue.length = 5; |
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var->transp.offset = 0; |
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var->transp.length = 0; |
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break; |
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} |
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return 0; |
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} |
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static int hitfb_set_par(struct fb_info *info) |
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{ |
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unsigned short ldr3; |
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switch (info->var.bits_per_pixel) { |
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case 8: |
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info->fix.line_length = info->var.xres; |
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info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
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info->fix.ypanstep = 16; |
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break; |
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case 16: |
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info->fix.line_length = info->var.xres*2; |
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info->fix.visual = FB_VISUAL_TRUECOLOR; |
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info->fix.ypanstep = 8; |
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break; |
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} |
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fb_writew(info->fix.line_length, HD64461_LCDCLOR); |
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ldr3 = fb_readw(HD64461_LDR3); |
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ldr3 &= ~15; |
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ldr3 |= (info->var.bits_per_pixel == 8) ? 4 : 8; |
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fb_writew(ldr3, HD64461_LDR3); |
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return 0; |
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} |
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static const struct fb_ops hitfb_ops = { |
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.owner = THIS_MODULE, |
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.fb_check_var = hitfb_check_var, |
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.fb_set_par = hitfb_set_par, |
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.fb_setcolreg = hitfb_setcolreg, |
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.fb_blank = hitfb_blank, |
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.fb_sync = hitfb_sync, |
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.fb_pan_display = hitfb_pan_display, |
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.fb_fillrect = hitfb_fillrect, |
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.fb_copyarea = hitfb_copyarea, |
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.fb_imageblit = cfb_imageblit, |
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}; |
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static int hitfb_probe(struct platform_device *dev) |
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{ |
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unsigned short lcdclor, ldr3, ldvndr; |
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struct fb_info *info; |
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int ret; |
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if (fb_get_options("hitfb", NULL)) |
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return -ENODEV; |
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hitfb_fix.mmio_start = HD64461_IO_OFFSET(0x1000); |
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hitfb_fix.mmio_len = 0x1000; |
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hitfb_fix.smem_start = HD64461_IO_OFFSET(0x02000000); |
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hitfb_fix.smem_len = 512 * 1024; |
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lcdclor = fb_readw(HD64461_LCDCLOR); |
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ldvndr = fb_readw(HD64461_LDVNDR); |
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ldr3 = fb_readw(HD64461_LDR3); |
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switch (ldr3 & 15) { |
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default: |
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case 4: |
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hitfb_var.bits_per_pixel = 8; |
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hitfb_var.xres = lcdclor; |
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break; |
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case 8: |
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hitfb_var.bits_per_pixel = 16; |
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hitfb_var.xres = lcdclor / 2; |
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break; |
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} |
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hitfb_fix.line_length = lcdclor; |
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hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ? |
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FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; |
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hitfb_var.yres = ldvndr + 1; |
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hitfb_var.xres_virtual = hitfb_var.xres; |
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hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor; |
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switch (hitfb_var.bits_per_pixel) { |
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case 8: |
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hitfb_var.red.offset = 0; |
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hitfb_var.red.length = 8; |
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hitfb_var.green.offset = 0; |
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hitfb_var.green.length = 8; |
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hitfb_var.blue.offset = 0; |
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hitfb_var.blue.length = 8; |
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hitfb_var.transp.offset = 0; |
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hitfb_var.transp.length = 0; |
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break; |
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case 16: /* RGB 565 */ |
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hitfb_var.red.offset = 11; |
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hitfb_var.red.length = 5; |
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hitfb_var.green.offset = 5; |
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hitfb_var.green.length = 6; |
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hitfb_var.blue.offset = 0; |
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hitfb_var.blue.length = 5; |
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hitfb_var.transp.offset = 0; |
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hitfb_var.transp.length = 0; |
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break; |
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} |
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info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); |
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if (unlikely(!info)) |
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return -ENOMEM; |
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info->fbops = &hitfb_ops; |
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info->var = hitfb_var; |
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info->fix = hitfb_fix; |
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info->pseudo_palette = info->par; |
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info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN | |
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FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA; |
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info->screen_base = (void *)hitfb_fix.smem_start; |
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ret = fb_alloc_cmap(&info->cmap, 256, 0); |
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if (unlikely(ret < 0)) |
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goto err_fb; |
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ret = register_framebuffer(info); |
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if (unlikely(ret < 0)) |
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goto err; |
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platform_set_drvdata(dev, info); |
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fb_info(info, "%s frame buffer device\n", info->fix.id); |
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return 0; |
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err: |
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fb_dealloc_cmap(&info->cmap); |
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err_fb: |
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framebuffer_release(info); |
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return ret; |
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} |
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static int hitfb_remove(struct platform_device *dev) |
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{ |
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struct fb_info *info = platform_get_drvdata(dev); |
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unregister_framebuffer(info); |
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fb_dealloc_cmap(&info->cmap); |
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framebuffer_release(info); |
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return 0; |
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} |
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static int hitfb_suspend(struct device *dev) |
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{ |
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u16 v; |
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hitfb_blank(1,0); |
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v = fb_readw(HD64461_STBCR); |
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v |= HD64461_STBCR_SLCKE_IST; |
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fb_writew(v, HD64461_STBCR); |
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return 0; |
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} |
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static int hitfb_resume(struct device *dev) |
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{ |
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u16 v; |
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v = fb_readw(HD64461_STBCR); |
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v &= ~HD64461_STBCR_SLCKE_OST; |
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msleep(100); |
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v = fb_readw(HD64461_STBCR); |
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v &= ~HD64461_STBCR_SLCKE_IST; |
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fb_writew(v, HD64461_STBCR); |
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hitfb_blank(0,0); |
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return 0; |
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} |
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static const struct dev_pm_ops hitfb_dev_pm_ops = { |
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.suspend = hitfb_suspend, |
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.resume = hitfb_resume, |
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}; |
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static struct platform_driver hitfb_driver = { |
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.probe = hitfb_probe, |
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.remove = hitfb_remove, |
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.driver = { |
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.name = "hitfb", |
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.pm = &hitfb_dev_pm_ops, |
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}, |
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}; |
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static struct platform_device hitfb_device = { |
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.name = "hitfb", |
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.id = -1, |
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}; |
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static int __init hitfb_init(void) |
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{ |
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int ret; |
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ret = platform_driver_register(&hitfb_driver); |
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if (!ret) { |
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ret = platform_device_register(&hitfb_device); |
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if (ret) |
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platform_driver_unregister(&hitfb_driver); |
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} |
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return ret; |
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} |
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static void __exit hitfb_exit(void) |
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{ |
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platform_device_unregister(&hitfb_device); |
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platform_driver_unregister(&hitfb_driver); |
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} |
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module_init(hitfb_init); |
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module_exit(hitfb_exit); |
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MODULE_LICENSE("GPL");
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