arch/arm/plat-versatile/clcd.c

   1 #include <linux/device.h>
   2 #include <linux/dma-mapping.h>
   3 #include <linux/amba/bus.h>
   4 #include <linux/amba/clcd.h>
   5 #include <plat/clcd.h>
   6
   7 static struct clcd_panel vga = {
   8         .mode           = {
   9                 .name           = "VGA",
  10                 .refresh        = 60,
  11                 .xres           = 640,
  12                 .yres           = 480,
  13                 .pixclock       = 39721,
  14                 .left_margin    = 40,
  15                 .right_margin   = 24,
  16                 .upper_margin   = 32,
  17                 .lower_margin   = 11,
  18                 .hsync_len      = 96,
  19                 .vsync_len      = 2,
  20                 .sync           = 0,
  21                 .vmode          = FB_VMODE_NONINTERLACED,
  22         },
  23         .width          = -1,
  24         .height         = -1,
  25         .tim2           = TIM2_BCD | TIM2_IPC,
  26         .cntl           = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
  27         .caps           = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
  28         .bpp            = 16,
  29 };
  30
  31 static struct clcd_panel xvga = {
  32         .mode           = {
  33                 .name           = "XVGA",
  34                 .refresh        = 60,
  35                 .xres           = 1024,
  36                 .yres           = 768,
  37                 .pixclock       = 15748,
  38                 .left_margin    = 152,
  39                 .right_margin   = 48,
  40                 .upper_margin   = 23,
  41                 .lower_margin   = 3,
  42                 .hsync_len      = 104,
  43                 .vsync_len      = 4,
  44                 .sync           = 0,
  45                 .vmode          = FB_VMODE_NONINTERLACED,
  46         },
  47         .width          = -1,
  48         .height         = -1,
  49         .tim2           = TIM2_BCD | TIM2_IPC,
  50         .cntl           = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
  51         .caps           = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
  52         .bpp            = 16,
  53 };
  54
  55 /* Sanyo TM38QV67A02A - 3.8 inch QVGA (320x240) Color TFT */
  56 static struct clcd_panel sanyo_tm38qv67a02a = {
  57         .mode           = {
  58                 .name           = "Sanyo TM38QV67A02A",
  59                 .refresh        = 116,
  60                 .xres           = 320,
  61                 .yres           = 240,
  62                 .pixclock       = 100000,
  63                 .left_margin    = 6,
  64                 .right_margin   = 6,
  65                 .upper_margin   = 5,
  66                 .lower_margin   = 5,
  67                 .hsync_len      = 6,
  68                 .vsync_len      = 6,
  69                 .sync           = 0,
  70                 .vmode          = FB_VMODE_NONINTERLACED,
  71         },
  72         .width          = -1,
  73         .height         = -1,
  74         .tim2           = TIM2_BCD,
  75         .cntl           = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
  76         .caps           = CLCD_CAP_5551,
  77         .bpp            = 16,
  78 };
  79
  80 static struct clcd_panel sanyo_2_5_in = {
  81         .mode           = {
  82                 .name           = "Sanyo QVGA Portrait",
  83                 .refresh        = 116,
  84                 .xres           = 240,
  85                 .yres           = 320,
  86                 .pixclock       = 100000,
  87                 .left_margin    = 20,
  88                 .right_margin   = 10,
  89                 .upper_margin   = 2,
  90                 .lower_margin   = 2,
  91                 .hsync_len      = 10,
  92                 .vsync_len      = 2,
  93                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  94                 .vmode          = FB_VMODE_NONINTERLACED,
  95         },
  96         .width          = -1,
  97         .height         = -1,
  98         .tim2           = TIM2_IVS | TIM2_IHS | TIM2_IPC,
  99         .cntl           = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
 100         .caps           = CLCD_CAP_5551,
 101         .bpp            = 16,
 102 };
 103
 104 /* Epson L2F50113T00 - 2.2 inch 176x220 Color TFT */
 105 static struct clcd_panel epson_l2f50113t00 = {
 106         .mode           = {
 107                 .name           = "Epson L2F50113T00",
 108                 .refresh        = 390,
 109                 .xres           = 176,
 110                 .yres           = 220,
 111                 .pixclock       = 62500,
 112                 .left_margin    = 3,
 113                 .right_margin   = 2,
 114                 .upper_margin   = 1,
 115                 .lower_margin   = 0,
 116                 .hsync_len      = 3,
 117                 .vsync_len      = 2,
 118                 .sync           = 0,
 119                 .vmode          = FB_VMODE_NONINTERLACED,
 120         },
 121         .width          = -1,
 122         .height         = -1,
 123         .tim2           = TIM2_BCD | TIM2_IPC,
 124         .cntl           = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
 125         .caps           = CLCD_CAP_5551,
 126         .bpp            = 16,
 127 };
 128
 129 static struct clcd_panel *panels[] = {
 130         &vga,
 131         &xvga,
 132         &sanyo_tm38qv67a02a,
 133         &sanyo_2_5_in,
 134         &epson_l2f50113t00,
 135 };
 136
 137 struct clcd_panel *versatile_clcd_get_panel(const char *name)
 138 {
 139         int i;
 140
 141         for (i = 0; i < ARRAY_SIZE(panels); i++)
 142                 if (strcmp(panels[i]->mode.name, name) == 0)
 143                         break;
 144
 145         if (i < ARRAY_SIZE(panels))
 146                 return panels[i];
 147
 148         pr_err("CLCD: couldn't get parameters for panel %s\n", name);
 149
 150         return NULL;
 151 }
 152
 153 int versatile_clcd_setup_dma(struct clcd_fb *fb, unsigned long framesize)
 154 {
 155         dma_addr_t dma;
 156
 157         fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
 158                                                     &dma, GFP_KERNEL);
 159         if (!fb->fb.screen_base) {
 160                 pr_err("CLCD: unable to map framebuffer\n");
 161                 return -ENOMEM;
 162         }
 163
 164         fb->fb.fix.smem_start   = dma;
 165         fb->fb.fix.smem_len     = framesize;
 166
 167         return 0;
 168 }
 169
 170 int versatile_clcd_mmap_dma(struct clcd_fb *fb, struct vm_area_struct *vma)
 171 {
 172         return dma_mmap_writecombine(&fb->dev->dev, vma,
 173                                      fb->fb.screen_base,
 174                                      fb->fb.fix.smem_start,
 175                                      fb->fb.fix.smem_len);
 176 }
 177
 178 void versatile_clcd_remove_dma(struct clcd_fb *fb)
 179 {
 180         dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
 181                               fb->fb.screen_base, fb->fb.fix.smem_start);
 182 }