target/linux/s3c24xx/patches-2.6.26/0186-Subject-PATCH-glamo-Don-t-disable-hwcursor-for-b.patch

   1 From a613c5fb94c06db20195b8be4593cf05895205cf Mon Sep 17 00:00:00 2001
   2 From: Andrzej Zaborowski <balrog@zabor.org>
   3 Date: Fri, 25 Jul 2008 23:06:16 +0100
   4 Subject: [PATCH] Subject: [PATCH] glamo: Don't disable hwcursor for blinking and use vsync-wait.
   5
   6 ---
   7  drivers/mfd/glamo/glamo-fb.c |  109 +++++++++++++++++++++++++++++-------------
   8  1 files changed, 76 insertions(+), 33 deletions(-)
   9
  10 diff --git a/drivers/mfd/glamo/glamo-fb.c b/drivers/mfd/glamo/glamo-fb.c
  11 index 30cdb38..7e800f5 100644
  12 --- a/drivers/mfd/glamo/glamo-fb.c
  13 +++ b/drivers/mfd/glamo/glamo-fb.c
  14 @@ -72,6 +72,7 @@ struct glamofb_handle {
  15         char __iomem *base;
  16         struct glamofb_platform_data *mach_info;
  17         char __iomem *cursor_addr;
  18 +       int cursor_on;
  19         u_int32_t pseudo_pal[16];
  20         spinlock_t lock_cmd;
  21  };
  22 @@ -499,18 +500,53 @@ static int glamofb_setcolreg(unsigned regno,
  23  }
  24
  25  #ifdef CONFIG_MFD_GLAMO_HWACCEL
  26 +static inline void glamofb_vsync_wait(struct glamofb_handle *glamo,
  27 +               int line, int size, int range)
  28 +{
  29 +       int count[2];
  30 +
  31 +       do {
  32 +               count[0] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
  33 +               count[1] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
  34 +       } while (count[0] != count[1] ||
  35 +                       (line < count[0] + range &&
  36 +                        size > count[0] - range) ||
  37 +                       count[0] < range * 2);
  38 +}
  39 +
  40 +/*
  41 + * Enable/disable the hardware cursor mode altogether
  42 + * (for blinking and such, use glamofb_cursor()).
  43 + */
  44 +static void glamofb_cursor_onoff(struct glamofb_handle *glamo, int on)
  45 +{
  46 +       int y, size;
  47 +
  48 +       if (glamo->cursor_on) {
  49 +               y = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_POS);
  50 +               size = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE);
  51 +
  52 +               glamofb_vsync_wait(glamo, y, size, 30);
  53 +       }
  54 +
  55 +       reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
  56 +                       GLAMO_LCD_MODE1_CURSOR_EN,
  57 +                       on ? GLAMO_LCD_MODE1_CURSOR_EN : 0);
  58 +       glamo->cursor_on = on;
  59 +
  60 +       /* Hide the cursor by default */
  61 +       reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE, 0);
  62 +}
  63 +
  64  static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
  65  {
  66         struct glamofb_handle *glamo = info->par;
  67         unsigned long flags;
  68
  69 -       if (cursor->image.depth > 2)
  70 -               return -EINVAL;
  71 -
  72         spin_lock_irqsave(&glamo->lock_cmd, flags);
  73
  74 -       reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
  75 -                       GLAMO_LCD_MODE1_CURSOR_EN, 0);
  76 +       reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE,
  77 +                       cursor->enable ? cursor->image.width : 0);
  78
  79         if (cursor->set & FB_CUR_SETPOS) {
  80                 reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_POS,
  81 @@ -520,12 +556,12 @@ static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
  82         }
  83
  84         if (cursor->set & FB_CUR_SETCMAP) {
  85 -               uint16_t fg = cursor->image.fg_color;
  86 -               uint16_t bg = cursor->image.bg_color;
  87 +               uint16_t fg = glamo->pseudo_pal[cursor->image.fg_color];
  88 +               uint16_t bg = glamo->pseudo_pal[cursor->image.bg_color];
  89
  90                 reg_write(glamo, GLAMO_REG_LCD_CURSOR_FG_COLOR, fg);
  91                 reg_write(glamo, GLAMO_REG_LCD_CURSOR_BG_COLOR, bg);
  92 -               reg_write(glamo, GLAMO_REG_LCD_CURSOR_DST_COLOR, bg);
  93 +               reg_write(glamo, GLAMO_REG_LCD_CURSOR_DST_COLOR, fg);
  94         }
  95
  96         if (cursor->set & FB_CUR_SETHOT)
  97 @@ -534,23 +570,27 @@ static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
  98
  99         if ((cursor->set & FB_CUR_SETSIZE) ||
 100             (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE))) {
 101 -               int x, y, pitch;
 102 -               const unsigned char *pcol = cursor->image.data;
 103 -               const unsigned char *pmsk = cursor->mask;
 104 -               void __iomem *dst = glamo->cursor_addr;
 105 -               unsigned char dcol = 0;
 106 -               unsigned char dmsk = 0;
 107 -               unsigned char byte = 0;
 108 -
 109 -               pitch = (cursor->image.width + 3) >> 2;
 110 -               reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE,
 111 -                         cursor->image.width);
 112 +               int x, y, pitch, op;
 113 +               const uint8_t *pcol = cursor->image.data;
 114 +               const uint8_t *pmsk = cursor->mask;
 115 +               uint8_t __iomem *dst = glamo->cursor_addr;
 116 +               uint8_t dcol = 0;
 117 +               uint8_t dmsk = 0;
 118 +               uint8_t byte = 0;
 119 +
 120 +               if (cursor->image.depth > 1) {
 121 +                       spin_unlock_irqrestore(&glamo->lock_cmd, flags);
 122 +                       return -EINVAL;
 123 +               }
 124 +
 125 +               pitch = ((cursor->image.width + 7) >> 2) & ~1;
 126                 reg_write(glamo, GLAMO_REG_LCD_CURSOR_PITCH,
 127 -                         pitch);
 128 +                       pitch);
 129                 reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE,
 130 -                         cursor->image.height);
 131 +                       cursor->image.height);
 132
 133                 for (y = 0; y < cursor->image.height; y++) {
 134 +                       byte = 0;
 135                         for (x = 0; x < cursor->image.width; x++) {
 136                                 if ((x % 8) == 0) {
 137                                         dcol = *pcol++;
 138 @@ -560,28 +600,28 @@ static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 139                                         dmsk >>= 1;
 140                                 }
 141
 142 -                               if (dmsk & 1) {
 143 -                                       unsigned int op;
 144 +                               if (cursor->rop == ROP_COPY)
 145 +                                       op = (dmsk & 1) ?
 146 +                                               (dcol & 1) ? 1 : 3 : 0;
 147 +                               else
 148 +                                       op = ((dmsk & 1) << 1) |
 149 +                                               ((dcol & 1) << 0);
 150 +                               byte |= op << ((x & 3) << 1);
 151
 152 -                                       op = (dcol & 1) ? 1 : 3;
 153 -                                       byte |= op << ((x % 4) * 2);
 154 -                               }
 155 -
 156 -                               if ((x % 4) == 0) {
 157 +                               if (x % 4 == 3) {
 158                                         writeb(byte, dst + x / 4);
 159                                         byte = 0;
 160                                 }
 161                         }
 162 +                       if (x % 4) {
 163 +                               writeb(byte, dst + x / 4);
 164 +                               byte = 0;
 165 +                       }
 166
 167                         dst += pitch;
 168                 }
 169         }
 170
 171 -       if (cursor->enable)
 172 -               reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
 173 -                               GLAMO_LCD_MODE1_CURSOR_EN,
 174 -                               GLAMO_LCD_MODE1_CURSOR_EN);
 175 -
 176         spin_unlock_irqrestore(&glamo->lock_cmd, flags);
 177
 178         return 0;
 179 @@ -809,6 +849,9 @@ static int __init glamofb_probe(struct platform_device *pdev)
 180         printk(KERN_ERR"spin_lock_init\n");
 181         spin_lock_init(&glamofb->lock_cmd);
 182         glamofb_init_regs(glamofb);
 183 +#ifdef CONFIG_MFD_GLAMO_HWACCEL
 184 +       glamofb_cursor_onoff(glamofb, 1);
 185 +#endif
 186
 187         rc = register_framebuffer(fbinfo);
 188         if (rc < 0) {
 189 --
 190 1.5.6.3
 191