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path: root/drivers/clk/sunxi/clk-sunxi.c
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Diffstat (limited to 'drivers/clk/sunxi/clk-sunxi.c')
-rw-r--r--drivers/clk/sunxi/clk-sunxi.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 91de0a006773..6ea7cf80a0ab 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -1127,3 +1127,41 @@ static void __init sun6i_pll6_clk_setup(struct device_node *node)
}
CLK_OF_DECLARE(sun6i_pll6, "allwinner,sun6i-a31-pll6-clk",
sun6i_pll6_clk_setup);
+
+/*
+ * sun6i display
+ *
+ * rate = parent_rate / (m + 1);
+ */
+static void sun6i_display_factors(struct factors_request *req)
+{
+ u8 m;
+
+ if (req->rate > req->parent_rate)
+ req->rate = req->parent_rate;
+
+ m = DIV_ROUND_UP(req->parent_rate, req->rate);
+
+ req->rate = req->parent_rate / m;
+ req->m = m - 1;
+}
+
+static const struct clk_factors_config sun6i_display_config = {
+ .mshift = 0,
+ .mwidth = 4,
+};
+
+static const struct factors_data sun6i_display_data __initconst = {
+ .enable = 31,
+ .mux = 24,
+ .muxmask = BIT(2) | BIT(1) | BIT(0),
+ .table = &sun6i_display_config,
+ .getter = sun6i_display_factors,
+};
+
+static void __init sun6i_display_setup(struct device_node *node)
+{
+ sunxi_factors_clk_setup(node, &sun6i_display_data);
+}
+CLK_OF_DECLARE(sun6i_display, "allwinner,sun6i-a31-display-clk",
+ sun6i_display_setup);