diff options
Diffstat (limited to 'drivers/core/ofnode.c')
| -rw-r--r-- | drivers/core/ofnode.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 4d56b1a7675..d08578e9c4f 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -991,6 +991,53 @@ int ofnode_decode_display_timing(ofnode parent, int index, return ret; } +int ofnode_decode_panel_timing(ofnode parent, + struct display_timing *dt) +{ + ofnode timings; + u32 val = 0; + int ret = 0; + + timings = ofnode_find_subnode(parent, "panel-timings"); + if (!ofnode_valid(timings)) + return -EINVAL; + memset(dt, 0, sizeof(*dt)); + ret |= decode_timing_property(timings, "hback-porch", &dt->hback_porch); + ret |= decode_timing_property(timings, "hfront-porch", &dt->hfront_porch); + ret |= decode_timing_property(timings, "hactive", &dt->hactive); + ret |= decode_timing_property(timings, "hsync-len", &dt->hsync_len); + ret |= decode_timing_property(timings, "vback-porch", &dt->vback_porch); + ret |= decode_timing_property(timings, "vfront-porch", &dt->vfront_porch); + ret |= decode_timing_property(timings, "vactive", &dt->vactive); + ret |= decode_timing_property(timings, "vsync-len", &dt->vsync_len); + ret |= decode_timing_property(timings, "clock-frequency", &dt->pixelclock); + dt->flags = 0; + if (!ofnode_read_u32(timings, "vsync-active", &val)) { + dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : + DISPLAY_FLAGS_VSYNC_LOW; + } + if (!ofnode_read_u32(timings, "hsync-active", &val)) { + dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : + DISPLAY_FLAGS_HSYNC_LOW; + } + if (!ofnode_read_u32(timings, "de-active", &val)) { + dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : + DISPLAY_FLAGS_DE_LOW; + } + if (!ofnode_read_u32(timings, "pixelclk-active", &val)) { + dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : + DISPLAY_FLAGS_PIXDATA_NEGEDGE; + } + if (ofnode_read_bool(timings, "interlaced")) + dt->flags |= DISPLAY_FLAGS_INTERLACED; + if (ofnode_read_bool(timings, "doublescan")) + dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; + if (ofnode_read_bool(timings, "doubleclk")) + dt->flags |= DISPLAY_FLAGS_DOUBLECLK; + + return ret; +} + const void *ofnode_get_property(ofnode node, const char *propname, int *lenp) { if (ofnode_is_np(node)) |