[PATCH v2 03/10] clk: sunxi: Let divs clocks read the base factor clock name from devicetree

[jenskuske@gmail.com (Jens Kuske)]

Currently, the sunxi clock driver gets the name for the base factor clock
of divs clocks from the name field in factors_data. This prevents reusing
of the factor clock for clocks with same properties, but different name.

This commit makes the divs setup function try to get a name from
clock-output-names in the devicetree. It also removes the name field where
possible and merges the sun4i PLL5 and PLL6 clocks.

The sun4i PLL5 clock doesn't have a output for the base factor clock,
so we still have to use the name field there.

Signed-off-by: Jens Kuske <jenskuske@gmail.com>
---
 drivers/clk/sunxi/clk-sunxi.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 17cba4d..afe560c 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -708,18 +708,10 @@ static const struct factors_data sun4i_pll5_data __initconst = {
 	.name = "pll5",
 };
 
-static const struct factors_data sun4i_pll6_data __initconst = {
-	.enable = 31,
-	.table = &sun4i_pll5_config,
-	.getter = sun4i_get_pll5_factors,
-	.name = "pll6",
-};
-
 static const struct factors_data sun6i_a31_pll6_data __initconst = {
 	.enable = 31,
 	.table = &sun6i_a31_pll6_config,
 	.getter = sun6i_a31_get_pll6_factors,
-	.name = "pll6x2",
 };
 
 static const struct factors_data sun5i_a13_ahb_data __initconst = {
@@ -1099,7 +1091,7 @@ static const struct divs_data pll5_divs_data __initconst = {
 };
 
 static const struct divs_data pll6_divs_data __initconst = {
-	.factors = &sun4i_pll6_data,
+	.factors = &sun4i_pll5_data,
 	.ndivs = 4,
 	.div = {
 		{ .shift = 0, .table = pll6_sata_tbl, .gate = 14 }, /* M, SATA */
@@ -1141,6 +1133,7 @@ static void __init sunxi_divs_clk_setup(struct device_node *node,
 	struct clk_gate *gate = NULL;
 	struct clk_fixed_factor *fix_factor;
 	struct clk_divider *divider;
+	struct factors_data factors = *data->factors;
 	void __iomem *reg;
 	int ndivs = SUNXI_DIVS_MAX_QTY, i = 0;
 	int flags, clkflags;
@@ -1149,8 +1142,17 @@ static void __init sunxi_divs_clk_setup(struct device_node *node,
 	if (data->ndivs)
 		ndivs = data->ndivs;
 
+	/* Try to find a name for base factor clock */
+	for (i = 0; i < ndivs; i++) {
+		if (data->div[i].self) {
+			of_property_read_string_index(node, "clock-output-names",
+						      i, &factors.name);
+			break;
+		}
+	}
+
 	/* Set up factor clock that we will be dividing */
-	pclk = sunxi_factors_clk_setup(node, data->factors);
+	pclk = sunxi_factors_clk_setup(node, &factors);
 	parent = __clk_get_name(pclk);
 
 	reg = of_iomap(node, 0);
-- 
2.4.0