static ssize_t enable_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvhost_device *ndev = to_nvhost_device(dev);
struct tegra_dc *dc = nvhost_get_drvdata(ndev);
unsigned long val = 0;
if (strict_strtoul(buf, 10, &val) < 0)
return -EINVAL;
if (val) {
tegra_dc_enable(dc);
} else {
tegra_dc_disable(dc);
}
return count;
}
/* Enable DC when hotplug succeeds */
static void handle_enable_l(struct tegra_dc_hdmi_data *hdmi)
{
tegra_dc_enable(hdmi->dc);
}
static int tegra_fb_set_par(struct fb_info *info)
{
struct tegra_fb_info *tegra_fb = info->par;
struct fb_var_screeninfo *var = &info->var;
if (var->bits_per_pixel) {
/* we only support RGB ordering for now */
switch (var->bits_per_pixel) {
case 32:
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 16;
var->blue.length = 8;
var->transp.offset = 24;
var->transp.length = 8;
tegra_fb->win->fmt = TEGRA_WIN_FMT_R8G8B8A8;
break;
case 16:
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
tegra_fb->win->fmt = TEGRA_WIN_FMT_B5G6R5;
break;
default:
return -EINVAL;
}
info->fix.line_length = var->xres * var->bits_per_pixel / 8;
/* Pad the stride to 16-byte boundary. */
info->fix.line_length = round_up(info->fix.line_length,
TEGRA_LINEAR_PITCH_ALIGNMENT);
tegra_fb->win->stride = info->fix.line_length;
tegra_fb->win->stride_uv = 0;
tegra_fb->win->phys_addr_u = 0;
tegra_fb->win->phys_addr_v = 0;
}
if (var->pixclock) {
bool stereo;
struct fb_videomode m;
fb_var_to_videomode(&m, var);
info->mode = (struct fb_videomode *)
fb_find_nearest_mode(&m, &info->modelist);
if (!info->mode) {
dev_warn(&tegra_fb->ndev->dev, "can't match video mode\n");
return -EINVAL;
}
/*
* only enable stereo if the mode supports it and
* client requests it
*/
stereo = !!(var->vmode & info->mode->vmode &
#ifndef CONFIG_TEGRA_HDMI_74MHZ_LIMIT
FB_VMODE_STEREO_FRAME_PACK);
#else
FB_VMODE_STEREO_LEFT_RIGHT);
#endif
tegra_dc_set_fb_mode(tegra_fb->win->dc, info->mode, stereo);
/* Reflect the mode change on dc */
tegra_dc_disable(tegra_fb->win->dc);
tegra_dc_enable(tegra_fb->win->dc);
tegra_fb->win->w.full = dfixed_const(info->mode->xres);
tegra_fb->win->h.full = dfixed_const(info->mode->yres);
tegra_fb->win->out_w = info->mode->xres;
tegra_fb->win->out_h = info->mode->yres;
}