/**
* of_parse_display_timing - parse display_timing entry from device_node
* @np: device_node with the properties
**/
static int of_parse_display_timing(const struct device_node *np,
struct display_timing *dt)
{
u32 val = 0;
int ret = 0;
memset(dt, 0, sizeof(*dt));
ret |= parse_timing_property(np, "hback-porch", &dt->hback_porch);
ret |= parse_timing_property(np, "hfront-porch", &dt->hfront_porch);
ret |= parse_timing_property(np, "hactive", &dt->hactive);
ret |= parse_timing_property(np, "hsync-len", &dt->hsync_len);
ret |= parse_timing_property(np, "vback-porch", &dt->vback_porch);
ret |= parse_timing_property(np, "vfront-porch", &dt->vfront_porch);
ret |= parse_timing_property(np, "vactive", &dt->vactive);
ret |= parse_timing_property(np, "vsync-len", &dt->vsync_len);
ret |= parse_timing_property(np, "clock-frequency", &dt->pixelclock);
dt->flags = 0;
if (!of_property_read_u32(np, "vsync-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
DISPLAY_FLAGS_VSYNC_LOW;
if (!of_property_read_u32(np, "hsync-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
DISPLAY_FLAGS_HSYNC_LOW;
if (!of_property_read_u32(np, "de-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
DISPLAY_FLAGS_DE_LOW;
if (!of_property_read_u32(np, "pixelclk-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
DISPLAY_FLAGS_PIXDATA_NEGEDGE;
if (of_property_read_bool(np, "interlaced"))
dt->flags |= DISPLAY_FLAGS_INTERLACED;
if (of_property_read_bool(np, "doublescan"))
dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
if (of_property_read_bool(np, "doubleclk"))
dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
if (ret) {
pr_err("%s: error reading timing properties\n",
of_node_full_name(np));
return -EINVAL;
}
return 0;
}
/**
* of_get_display_timing - parse display_timing entry from device_node
* @np: device_node with the properties
**/
static struct display_timing *of_get_display_timing(struct device_node *np)
{
struct display_timing *dt;
u32 val = 0;
int ret = 0;
#if defined(CONFIG_FB_ROCKCHIP) || defined(CONFIG_DRM_ROCKCHIP)
struct property *prop;
int length;
#endif
dt = kzalloc(sizeof(*dt), GFP_KERNEL);
if (!dt) {
pr_err("%s: could not allocate display_timing struct\n",
of_node_full_name(np));
return NULL;
}
ret |= parse_timing_property(np, "hback-porch", &dt->hback_porch);
ret |= parse_timing_property(np, "hfront-porch", &dt->hfront_porch);
ret |= parse_timing_property(np, "hactive", &dt->hactive);
ret |= parse_timing_property(np, "hsync-len", &dt->hsync_len);
ret |= parse_timing_property(np, "vback-porch", &dt->vback_porch);
ret |= parse_timing_property(np, "vfront-porch", &dt->vfront_porch);
ret |= parse_timing_property(np, "vactive", &dt->vactive);
ret |= parse_timing_property(np, "vsync-len", &dt->vsync_len);
ret |= parse_timing_property(np, "clock-frequency", &dt->pixelclock);
dt->flags = 0;
if (!of_property_read_u32(np, "vsync-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
DISPLAY_FLAGS_VSYNC_LOW;
if (!of_property_read_u32(np, "hsync-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
DISPLAY_FLAGS_HSYNC_LOW;
if (!of_property_read_u32(np, "de-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
DISPLAY_FLAGS_DE_LOW;
if (!of_property_read_u32(np, "pixelclk-active", &val))
dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
DISPLAY_FLAGS_PIXDATA_NEGEDGE;
if (of_property_read_bool(np, "interlaced"))
dt->flags |= DISPLAY_FLAGS_INTERLACED;
if (of_property_read_bool(np, "doublescan"))
dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
#if defined(CONFIG_FB_ROCKCHIP) || defined(CONFIG_DRM_ROCKCHIP)
if (!of_property_read_u32(np, "swap-rg", &val))
dt->flags |= val ? DISPLAY_FLAGS_SWAP_RG : 0;
if (!of_property_read_u32(np, "swap-gb", &val))
dt->flags |= val ? DISPLAY_FLAGS_SWAP_GB : 0;
if (!of_property_read_u32(np, "swap-rb", &val))
dt->flags |= val ? DISPLAY_FLAGS_SWAP_RB : 0;
if (!of_property_read_u32(np, "screen-type", &val))
dt->screen_type = val;
if (!of_property_read_u32(np, "lvds-format", &val))
dt->lvds_format = val;
if (!of_property_read_u32(np, "out-face", &val))
dt->face = val;
if (!of_property_read_u32(np, "color-mode", &val))
dt->color_mode = val;
prop = of_find_property(np, "dsp-lut", &length);
if (prop) {
dt->dsp_lut = kzalloc(length, GFP_KERNEL);
if (dt->dsp_lut)
ret = of_property_read_u32_array(np,
"dsp-lut",dt->dsp_lut, length >> 2);
}
#endif
if (ret) {
pr_err("%s: error reading timing properties\n",
of_node_full_name(np));
kfree(dt);
return NULL;
}
return dt;
}
