clcd.c

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#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
#include <plat/clcd.h>

static struct clcd_panel vga = {
    .mode       = {
        .name       = "VGA",
        .refresh    = 60,
        .xres       = 640,
        .yres       = 480,
        .pixclock   = 39721,
        .left_margin    = 40,
        .right_margin   = 24,
        .upper_margin   = 32,
        .lower_margin   = 11,
        .hsync_len  = 96,
        .vsync_len  = 2,
        .sync       = 0,
        .vmode      = FB_VMODE_NONINTERLACED,
    },
    .width      = -1,
    .height     = -1,
    .tim2       = TIM2_BCD | TIM2_IPC,
    .cntl       = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
    .caps       = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
    .bpp        = 16,
};

static struct clcd_panel xvga = {
    .mode       = {
        .name       = "XVGA",
        .refresh    = 60,
        .xres       = 1024,
        .yres       = 768,
        .pixclock   = 15748,
        .left_margin    = 152,
        .right_margin   = 48,
        .upper_margin   = 23,
        .lower_margin   = 3,
        .hsync_len  = 104,
        .vsync_len  = 4,
        .sync       = 0,
        .vmode      = FB_VMODE_NONINTERLACED,
    },
    .width      = -1,
    .height     = -1,
    .tim2       = TIM2_BCD | TIM2_IPC,
    .cntl       = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
    .caps       = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
    .bpp        = 16,
};

/* Sanyo TM38QV67A02A - 3.8 inch QVGA (320x240) Color TFT */
static struct clcd_panel sanyo_tm38qv67a02a = {
    .mode       = {
        .name       = "Sanyo TM38QV67A02A",
        .refresh    = 116,
        .xres       = 320,
        .yres       = 240,
        .pixclock   = 100000,
        .left_margin    = 6,
        .right_margin   = 6,
        .upper_margin   = 5,
        .lower_margin   = 5,
        .hsync_len  = 6,
        .vsync_len  = 6,
        .sync       = 0,
        .vmode      = FB_VMODE_NONINTERLACED,
    },
    .width      = -1,
    .height     = -1,
    .tim2       = TIM2_BCD,
    .cntl       = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
    .caps       = CLCD_CAP_5551,
    .bpp        = 16,
};

static struct clcd_panel sanyo_2_5_in = {
    .mode       = {
        .name       = "Sanyo QVGA Portrait",
        .refresh    = 116,
        .xres       = 240,
        .yres       = 320,
        .pixclock   = 100000,
        .left_margin    = 20,
        .right_margin   = 10,
        .upper_margin   = 2,
        .lower_margin   = 2,
        .hsync_len  = 10,
        .vsync_len  = 2,
        .sync       = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
        .vmode      = FB_VMODE_NONINTERLACED,
    },
    .width      = -1,
    .height     = -1,
    .tim2       = TIM2_IVS | TIM2_IHS | TIM2_IPC,
    .cntl       = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
    .caps       = CLCD_CAP_5551,
    .bpp        = 16,
};

/* Epson L2F50113T00 - 2.2 inch 176x220 Color TFT */
static struct clcd_panel epson_l2f50113t00 = {
    .mode       = {
        .name       = "Epson L2F50113T00",
        .refresh    = 390,
        .xres       = 176,
        .yres       = 220,
        .pixclock   = 62500,
        .left_margin    = 3,
        .right_margin   = 2,
        .upper_margin   = 1,
        .lower_margin   = 0,
        .hsync_len  = 3,
        .vsync_len  = 2,
        .sync       = 0,
        .vmode      = FB_VMODE_NONINTERLACED,
    },
    .width      = -1,
    .height     = -1,
    .tim2       = TIM2_BCD | TIM2_IPC,
    .cntl       = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
    .caps       = CLCD_CAP_5551,
    .bpp        = 16,
};

static struct clcd_panel *panels[] = {
    &vga,
    &xvga,
    &sanyo_tm38qv67a02a,
    &sanyo_2_5_in,
    &epson_l2f50113t00,
};

struct clcd_panel *versatile_clcd_get_panel(const char *name)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(panels); i++)
        if (strcmp(panels[i]->mode.name, name) == 0)
            break;

    if (i < ARRAY_SIZE(panels))
        return panels[i];

    pr_err("CLCD: couldn't get parameters for panel %s\n", name);

    return NULL;
}

int versatile_clcd_setup_dma(struct clcd_fb *fb, unsigned long framesize)
{
    dma_addr_t dma;

    fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
                            &dma, GFP_KERNEL);
    if (!fb->fb.screen_base) {
        pr_err("CLCD: unable to map framebuffer\n");
        return -ENOMEM;
    }

    fb->fb.fix.smem_start   = dma;
    fb->fb.fix.smem_len = framesize;

    return 0;
}

int versatile_clcd_mmap_dma(struct clcd_fb *fb, struct vm_area_struct *vma)
{
    return dma_mmap_writecombine(&fb->dev->dev, vma,
                     fb->fb.screen_base,
                     fb->fb.fix.smem_start,
                     fb->fb.fix.smem_len);
}

void versatile_clcd_remove_dma(struct clcd_fb *fb)
{
    dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
                  fb->fb.screen_base, fb->fb.fix.smem_start);
}