1 files changed, 52 insertions, 6 deletions

diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index ce453e1718e5..cd2b6ce551c6 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -37,6 +37,13 @@ int mtk_pll_is_prepared(struct clk_hw *hw)
 	return (readl(pll->en_addr) & BIT(pll->data->pll_en_bit)) != 0;
 }
 
+static int mtk_pll_fenc_is_prepared(struct clk_hw *hw)
+{
+	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
+
+	return !!(readl(pll->fenc_addr) & BIT(pll->data->fenc_sta_bit));
+}
+
 static unsigned long __mtk_pll_recalc_rate(struct mtk_clk_pll *pll, u32 fin,
 		u32 pcw, int postdiv)
 {
@@ -200,16 +207,19 @@ unsigned long mtk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 	return __mtk_pll_recalc_rate(pll, parent_rate, pcw, postdiv);
 }
 
-long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			unsigned long *prate)
+int mtk_pll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
 {
 	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
 	u32 pcw = 0;
 	int postdiv;
 
-	mtk_pll_calc_values(pll, &pcw, &postdiv, rate, *prate);
+	mtk_pll_calc_values(pll, &pcw, &postdiv, req->rate,
+			    req->best_parent_rate);
+
+	req->rate = __mtk_pll_recalc_rate(pll, req->best_parent_rate, pcw,
+					  postdiv);
 
-	return __mtk_pll_recalc_rate(pll, *prate, pcw, postdiv);
+	return 0;
 }
 
 int mtk_pll_prepare(struct clk_hw *hw)
@@ -274,14 +284,43 @@ void mtk_pll_unprepare(struct clk_hw *hw)
 	writel(r, pll->pwr_addr);
 }
 
+static int mtk_pll_prepare_setclr(struct clk_hw *hw)
+{
+	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
+
+	writel(BIT(pll->data->pll_en_bit), pll->en_set_addr);
+
+	/* Wait 20us after enable for the PLL to stabilize */
+	udelay(20);
+
+	return 0;
+}
+
+static void mtk_pll_unprepare_setclr(struct clk_hw *hw)
+{
+	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
+
+	writel(BIT(pll->data->pll_en_bit), pll->en_clr_addr);
+}
+
 const struct clk_ops mtk_pll_ops = {
 	.is_prepared	= mtk_pll_is_prepared,
 	.prepare	= mtk_pll_prepare,
 	.unprepare	= mtk_pll_unprepare,
 	.recalc_rate	= mtk_pll_recalc_rate,
-	.round_rate	= mtk_pll_round_rate,
+	.determine_rate = mtk_pll_determine_rate,
+	.set_rate	= mtk_pll_set_rate,
+};
+
+const struct clk_ops mtk_pll_fenc_clr_set_ops = {
+	.is_prepared	= mtk_pll_fenc_is_prepared,
+	.prepare	= mtk_pll_prepare_setclr,
+	.unprepare	= mtk_pll_unprepare_setclr,
+	.recalc_rate	= mtk_pll_recalc_rate,
+	.determine_rate	= mtk_pll_determine_rate,
 	.set_rate	= mtk_pll_set_rate,
 };
+EXPORT_SYMBOL_GPL(mtk_pll_fenc_clr_set_ops);
 
 struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll,
 					const struct mtk_pll_data *data,
@@ -308,9 +347,15 @@ struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll,
 		pll->en_addr = base + data->en_reg;
 	else
 		pll->en_addr = pll->base_addr + REG_CON0;
+	if (data->en_set_reg)
+		pll->en_set_addr = base + data->en_set_reg;
+	if (data->en_clr_reg)
+		pll->en_clr_addr = base + data->en_clr_reg;
 	pll->hw.init = &init;
 	pll->data = data;
 
+	pll->fenc_addr = base + data->fenc_sta_ofs;
+
 	init.name = data->name;
 	init.flags = (data->flags & PLL_AO) ? CLK_IS_CRITICAL : 0;
 	init.ops = pll_ops;
@@ -333,12 +378,13 @@ struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data,
 {
 	struct mtk_clk_pll *pll;
 	struct clk_hw *hw;
+	const struct clk_ops *pll_ops = data->ops ? data->ops : &mtk_pll_ops;
 
 	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
 	if (!pll)
 		return ERR_PTR(-ENOMEM);
 
-	hw = mtk_clk_register_pll_ops(pll, data, base, &mtk_pll_ops);
+	hw = mtk_clk_register_pll_ops(pll, data, base, pll_ops);
 	if (IS_ERR(hw))
 		kfree(pll);