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author | Tom Rini <trini@ti.com> | 2014-11-25 19:09:48 +0300 |
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committer | Tom Rini <trini@ti.com> | 2014-11-26 19:21:16 +0300 |
commit | f2ffe7da7fcc266f8c9cb557031066cfd5eb2a03 (patch) | |
tree | ea83bd3054c5360223d53cf79cc3088e90a52d5a /common/fdt_support.c | |
parent | 1fc4e6f486cc1e9d2dcf0ba86e6021c3d83dce51 (diff) | |
parent | b366fb92c3d118f97bb0f01fa9c40d253e70e12c (diff) | |
download | u-boot-f2ffe7da7fcc266f8c9cb557031066cfd5eb2a03.tar.xz |
Merge branch 'master' of http://git.denx.de/u-boot-sunxi
Diffstat (limited to 'common/fdt_support.c')
-rw-r--r-- | common/fdt_support.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c index ce32fe73af..ea42c63eaa 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -1499,3 +1499,65 @@ int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, return 0; } + +/** + * fdt_setup_simplefb_node - Fill and enable a simplefb node + * + * @fdt: ptr to device tree + * @node: offset of the simplefb node + * @base_address: framebuffer base address + * @width: width in pixels + * @height: height in pixels + * @stride: bytes per line + * @format: pixel format string + * + * Convenience function to fill and enable a simplefb node. + */ +int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, + u32 height, u32 stride, const char *format) +{ + char name[32]; + fdt32_t cells[4]; + int i, addrc, sizec, ret; + + of_bus_default_count_cells(fdt, fdt_parent_offset(fdt, node), + &addrc, &sizec); + i = 0; + if (addrc == 2) + cells[i++] = cpu_to_fdt32(base_address >> 32); + cells[i++] = cpu_to_fdt32(base_address); + if (sizec == 2) + cells[i++] = 0; + cells[i++] = cpu_to_fdt32(height * stride); + + ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); + if (ret < 0) + return ret; + + snprintf(name, sizeof(name), "framebuffer@%llx", base_address); + ret = fdt_set_name(fdt, node, name); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "width", width); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "height", height); + if (ret < 0) + return ret; + + ret = fdt_setprop_u32(fdt, node, "stride", stride); + if (ret < 0) + return ret; + + ret = fdt_setprop_string(fdt, node, "format", format); + if (ret < 0) + return ret; + + ret = fdt_setprop_string(fdt, node, "status", "okay"); + if (ret < 0) + return ret; + + return 0; +} |