drivers/staging/msm/mdp_cursor.c

   1 /* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License version 2 and
   5  * only version 2 as published by the Free Software Foundation.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  15  * 02110-1301, USA.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/sched.h>
  21 #include <linux/time.h>
  22 #include <linux/init.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/hrtimer.h>
  25
  26 #include <mach/hardware.h>
  27 #include <asm/io.h>
  28
  29 #include <asm/system.h>
  30 #include <asm/mach-types.h>
  31 #include <linux/semaphore.h>
  32 #include <linux/spinlock.h>
  33
  34 #include <linux/fb.h>
  35
  36 #include "mdp.h"
  37 #include "msm_fb.h"
  38
  39 static int cursor_enabled;
  40
  41 int mdp_hw_cursor_update(struct fb_info *info, struct fb_cursor *cursor)
  42 {
  43         struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par;
  44         struct fb_image *img = &cursor->image;
  45         int calpha_en, transp_en;
  46         int alpha;
  47         int ret = 0;
  48
  49         if ((img->width > MDP_CURSOR_WIDTH) ||
  50             (img->height > MDP_CURSOR_HEIGHT) ||
  51             (img->depth != 32))
  52                 return -EINVAL;
  53
  54         if (cursor->set & FB_CUR_SETPOS)
  55                 MDP_OUTP(MDP_BASE + 0x9004c, (img->dy << 16) | img->dx);
  56
  57         if (cursor->set & FB_CUR_SETIMAGE) {
  58                 ret = copy_from_user(mfd->cursor_buf, img->data,
  59                                         img->width*img->height*4);
  60                 if (ret)
  61                         return ret;
  62
  63                 if (img->bg_color == 0xffffffff)
  64                         transp_en = 0;
  65                 else
  66                         transp_en = 1;
  67
  68                 alpha = (img->fg_color & 0xff000000) >> 24;
  69
  70                 if (alpha)
  71                         calpha_en = 0x2; /* xrgb */
  72                 else
  73                         calpha_en = 0x1; /* argb */
  74
  75                 MDP_OUTP(MDP_BASE + 0x90044, (img->height << 16) | img->width);
  76                 MDP_OUTP(MDP_BASE + 0x90048, mfd->cursor_buf_phys);
  77                 /* order the writes the cursor_buf before updating the
  78                  * hardware */
  79 //              dma_coherent_pre_ops();
  80                 MDP_OUTP(MDP_BASE + 0x90060,
  81                          (transp_en << 3) | (calpha_en << 1) |
  82                          (inp32(MDP_BASE + 0x90060) & 0x1));
  83 #ifdef CONFIG_FB_MSM_MDP40
  84                 MDP_OUTP(MDP_BASE + 0x90064, (alpha << 24));
  85                 MDP_OUTP(MDP_BASE + 0x90068, (0xffffff & img->bg_color));
  86                 MDP_OUTP(MDP_BASE + 0x9006C, (0xffffff & img->bg_color));
  87 #else
  88                 MDP_OUTP(MDP_BASE + 0x90064,
  89                          (alpha << 24) | (0xffffff & img->bg_color));
  90                 MDP_OUTP(MDP_BASE + 0x90068, 0);
  91 #endif
  92         }
  93
  94         if ((cursor->enable) && (!cursor_enabled)) {
  95                 cursor_enabled = 1;
  96                 MDP_OUTP(MDP_BASE + 0x90060, inp32(MDP_BASE + 0x90060) | 0x1);
  97         } else if ((!cursor->enable) && (cursor_enabled)) {
  98                 cursor_enabled = 0;
  99                 MDP_OUTP(MDP_BASE + 0x90060,
 100                          inp32(MDP_BASE + 0x90060) & (~0x1));
 101         }
 102
 103         return 0;
 104 }