1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 337abe5909e1..e22b95646e09 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -22,6 +22,8 @@
 #include <linux/of_address.h>
 #include <linux/list.h>
 
+#include "clock.h"
+
 #undef pr_fmt
 #define pr_fmt(fmt) "%s: " fmt, __func__
 
@@ -183,3 +185,128 @@ void ti_dt_clk_init_retry_clks(void)
 		retries--;
 	}
 }
+
+#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_ATAGS)
+void __init ti_clk_patch_legacy_clks(struct ti_clk **patch)
+{
+	while (*patch) {
+		memcpy((*patch)->patch, *patch, sizeof(**patch));
+		patch++;
+	}
+}
+
+struct clk __init *ti_clk_register_clk(struct ti_clk *setup)
+{
+	struct clk *clk;
+	struct ti_clk_fixed *fixed;
+	struct ti_clk_fixed_factor *fixed_factor;
+	struct clk_hw *clk_hw;
+
+	if (setup->clk)
+		return setup->clk;
+
+	switch (setup->type) {
+	case TI_CLK_FIXED:
+		fixed = setup->data;
+
+		clk = clk_register_fixed_rate(NULL, setup->name, NULL,
+					      CLK_IS_ROOT, fixed->frequency);
+		break;
+	case TI_CLK_MUX:
+		clk = ti_clk_register_mux(setup);
+		break;
+	case TI_CLK_DIVIDER:
+		clk = ti_clk_register_divider(setup);
+		break;
+	case TI_CLK_COMPOSITE:
+		clk = ti_clk_register_composite(setup);
+		break;
+	case TI_CLK_FIXED_FACTOR:
+		fixed_factor = setup->data;
+
+		clk = clk_register_fixed_factor(NULL, setup->name,
+						fixed_factor->parent,
+						0, fixed_factor->mult,
+						fixed_factor->div);
+		break;
+	case TI_CLK_GATE:
+		clk = ti_clk_register_gate(setup);
+		break;
+	case TI_CLK_DPLL:
+		clk = ti_clk_register_dpll(setup);
+		break;
+	default:
+		pr_err("bad type for %s!\n", setup->name);
+		clk = ERR_PTR(-EINVAL);
+	}
+
+	if (!IS_ERR(clk)) {
+		setup->clk = clk;
+		if (setup->clkdm_name) {
+			if (__clk_get_flags(clk) & CLK_IS_BASIC) {
+				pr_warn("can't setup clkdm for basic clk %s\n",
+					setup->name);
+			} else {
+				clk_hw = __clk_get_hw(clk);
+				to_clk_hw_omap(clk_hw)->clkdm_name =
+					setup->clkdm_name;
+				omap2_init_clk_clkdm(clk_hw);
+			}
+		}
+	}
+
+	return clk;
+}
+
+int __init ti_clk_register_legacy_clks(struct ti_clk_alias *clks)
+{
+	struct clk *clk;
+	bool retry;
+	struct ti_clk_alias *retry_clk;
+	struct ti_clk_alias *tmp;
+
+	while (clks->clk) {
+		clk = ti_clk_register_clk(clks->clk);
+		if (IS_ERR(clk)) {
+			if (PTR_ERR(clk) == -EAGAIN) {
+				list_add(&clks->link, &retry_list);
+			} else {
+				pr_err("register for %s failed: %ld\n",
+				       clks->clk->name, PTR_ERR(clk));
+				return PTR_ERR(clk);
+			}
+		} else {
+			clks->lk.clk = clk;
+			clkdev_add(&clks->lk);
+		}
+		clks++;
+	}
+
+	retry = true;
+
+	while (!list_empty(&retry_list) && retry) {
+		retry = false;
+		list_for_each_entry_safe(retry_clk, tmp, &retry_list, link) {
+			pr_debug("retry-init: %s\n", retry_clk->clk->name);
+			clk = ti_clk_register_clk(retry_clk->clk);
+			if (IS_ERR(clk)) {
+				if (PTR_ERR(clk) == -EAGAIN) {
+					continue;
+				} else {
+					pr_err("register for %s failed: %ld\n",
+					       retry_clk->clk->name,
+					       PTR_ERR(clk));
+					return PTR_ERR(clk);
+				}
+			} else {
+				retry = true;
+				retry_clk->lk.clk = clk;
+				clkdev_add(&retry_clk->lk);
+				list_del(&retry_clk->link);
+			}
+		}
+	}
+
+	return 0;
+}
+#endif