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From:   Yassine Oudjana <yassine.oudjana@gmail.com>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Loic Poulain <loic.poulain@linaro.org>
Cc:     Yassine Oudjana <y.oudjana@protonmail.com>,
        Yassine Oudjana <yassine.oudjana@gmail.com>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@somainline.org>,
        Martin Botka <martin.botka@somainline.org>,
        Marijn Suijten <marijn.suijten@somainline.org>,
        Jami Kettunen <jami.kettunen@somainline.org>,
        linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/6] clk: qcom: msm8996-cpu: Convert secondary muxes to clk_regmap_mux
Date:   Tue, 21 Jun 2022 20:06:19 +0400
Message-Id: <20220621160621.24415-5-y.oudjana@protonmail.com>
In-Reply-To: <20220621160621.24415-1-y.oudjana@protonmail.com>
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From: Yassine Oudjana <y.oudjana@protonmail.com>

There is nothing special about the secondary muxes, unlike the
primary muxes which need some extra logic to handle ACD and
switching between primary PLL and secondary mux sources. Turn
them into clk_regmap_mux and rename cpu_clk_msm8996_mux into
cpu_clk_msm8996_pmux to make it specific to primary muxes.

Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
---
 drivers/clk/qcom/clk-cpu-8996.c | 62 ++++++++++++++++-----------------
 1 file changed, 30 insertions(+), 32 deletions(-)

diff --git a/drivers/clk/qcom/clk-cpu-8996.c b/drivers/clk/qcom/clk-cpu-8996.c
index b6761a74d5ac..b3ad9245874d 100644
--- a/drivers/clk/qcom/clk-cpu-8996.c
+++ b/drivers/clk/qcom/clk-cpu-8996.c
@@ -59,6 +59,7 @@
 
 #include "clk-alpha-pll.h"
 #include "clk-regmap.h"
+#include "clk-regmap-mux.h"
 
 enum _pmux_input {
 	SMUX_INDEX = 0,
@@ -209,7 +210,7 @@ static struct clk_alpha_pll perfcl_alt_pll = {
 	},
 };
 
-struct clk_cpu_8996_mux {
+struct clk_cpu_8996_pmux {
 	u32	reg;
 	u8	shift;
 	u8	width;
@@ -222,18 +223,18 @@ struct clk_cpu_8996_mux {
 static int cpu_clk_notifier_cb(struct notifier_block *nb, unsigned long event,
 			       void *data);
 
-#define to_clk_cpu_8996_mux_nb(_nb) \
-	container_of(_nb, struct clk_cpu_8996_mux, nb)
+#define to_clk_cpu_8996_pmux_nb(_nb) \
+	container_of(_nb, struct clk_cpu_8996_pmux, nb)
 
-static inline struct clk_cpu_8996_mux *to_clk_cpu_8996_mux_hw(struct clk_hw *hw)
+static inline struct clk_cpu_8996_pmux *to_clk_cpu_8996_pmux_hw(struct clk_hw *hw)
 {
-	return container_of(to_clk_regmap(hw), struct clk_cpu_8996_mux, clkr);
+	return container_of(to_clk_regmap(hw), struct clk_cpu_8996_pmux, clkr);
 }
 
-static u8 clk_cpu_8996_mux_get_parent(struct clk_hw *hw)
+static u8 clk_cpu_8996_pmux_get_parent(struct clk_hw *hw)
 {
 	struct clk_regmap *clkr = to_clk_regmap(hw);
-	struct clk_cpu_8996_mux *cpuclk = to_clk_cpu_8996_mux_hw(hw);
+	struct clk_cpu_8996_pmux *cpuclk = to_clk_cpu_8996_pmux_hw(hw);
 	u32 mask = GENMASK(cpuclk->width - 1, 0);
 	u32 val;
 
@@ -243,10 +244,10 @@ static u8 clk_cpu_8996_mux_get_parent(struct clk_hw *hw)
 	return val & mask;
 }
 
-static int clk_cpu_8996_mux_set_parent(struct clk_hw *hw, u8 index)
+static int clk_cpu_8996_pmux_set_parent(struct clk_hw *hw, u8 index)
 {
 	struct clk_regmap *clkr = to_clk_regmap(hw);
-	struct clk_cpu_8996_mux *cpuclk = to_clk_cpu_8996_mux_hw(hw);
+	struct clk_cpu_8996_pmux *cpuclk = to_clk_cpu_8996_pmux_hw(hw);
 	u32 mask = GENMASK(cpuclk->width + cpuclk->shift - 1, cpuclk->shift);
 	u32 val;
 
@@ -256,10 +257,10 @@ static int clk_cpu_8996_mux_set_parent(struct clk_hw *hw, u8 index)
 	return regmap_update_bits(clkr->regmap, cpuclk->reg, mask, val);
 }
 
-static int clk_cpu_8996_mux_determine_rate(struct clk_hw *hw,
+static int clk_cpu_8996_pmux_determine_rate(struct clk_hw *hw,
 					   struct clk_rate_request *req)
 {
-	struct clk_cpu_8996_mux *cpuclk = to_clk_cpu_8996_mux_hw(hw);
+	struct clk_cpu_8996_pmux *cpuclk = to_clk_cpu_8996_pmux_hw(hw);
 	struct clk_hw *parent = cpuclk->pll;
 
 	if (cpuclk->pll_div_2 && req->rate < DIV_2_THRESHOLD) {
@@ -275,13 +276,13 @@ static int clk_cpu_8996_mux_determine_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static const struct clk_ops clk_cpu_8996_mux_ops = {
-	.set_parent = clk_cpu_8996_mux_set_parent,
-	.get_parent = clk_cpu_8996_mux_get_parent,
-	.determine_rate = clk_cpu_8996_mux_determine_rate,
+static const struct clk_ops clk_cpu_8996_pmux_ops = {
+	.set_parent = clk_cpu_8996_pmux_set_parent,
+	.get_parent = clk_cpu_8996_pmux_get_parent,
+	.determine_rate = clk_cpu_8996_pmux_determine_rate,
 };
 
-static struct clk_cpu_8996_mux pwrcl_smux = {
+static struct clk_regmap_mux pwrcl_smux = {
 	.reg = PWRCL_REG_OFFSET + MUX_OFFSET,
 	.shift = 2,
 	.width = 2,
@@ -292,12 +293,12 @@ static struct clk_cpu_8996_mux pwrcl_smux = {
 			"pwrcl_pll_postdiv",
 		},
 		.num_parents = 2,
-		.ops = &clk_cpu_8996_mux_ops,
+		.ops = &clk_regmap_mux_closest_ops,
 		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
-static struct clk_cpu_8996_mux perfcl_smux = {
+static struct clk_regmap_mux perfcl_smux = {
 	.reg = PERFCL_REG_OFFSET + MUX_OFFSET,
 	.shift = 2,
 	.width = 2,
@@ -308,12 +309,12 @@ static struct clk_cpu_8996_mux perfcl_smux = {
 			"perfcl_pll_postdiv",
 		},
 		.num_parents = 2,
-		.ops = &clk_cpu_8996_mux_ops,
+		.ops = &clk_regmap_mux_closest_ops,
 		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
-static struct clk_cpu_8996_mux pwrcl_pmux = {
+static struct clk_cpu_8996_pmux pwrcl_pmux = {
 	.reg = PWRCL_REG_OFFSET + MUX_OFFSET,
 	.shift = 0,
 	.width = 2,
@@ -329,13 +330,13 @@ static struct clk_cpu_8996_mux pwrcl_pmux = {
 			"pwrcl_alt_pll",
 		},
 		.num_parents = 4,
-		.ops = &clk_cpu_8996_mux_ops,
+		.ops = &clk_cpu_8996_pmux_ops,
 		/* CPU clock is critical and should never be gated */
 		.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
 	},
 };
 
-static struct clk_cpu_8996_mux perfcl_pmux = {
+static struct clk_cpu_8996_pmux perfcl_pmux = {
 	.reg = PERFCL_REG_OFFSET + MUX_OFFSET,
 	.shift = 0,
 	.width = 2,
@@ -351,7 +352,7 @@ static struct clk_cpu_8996_mux perfcl_pmux = {
 			"perfcl_alt_pll",
 		},
 		.num_parents = 4,
-		.ops = &clk_cpu_8996_mux_ops,
+		.ops = &clk_cpu_8996_pmux_ops,
 		/* CPU clock is critical and should never be gated */
 		.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
 	},
@@ -394,9 +395,6 @@ static int qcom_cpu_clk_msm8996_register_clks(struct device *dev,
 		return ret;
 	}
 
-	pwrcl_smux.pll = &pwrcl_pll_postdiv.hw;
-	perfcl_smux.pll = &perfcl_pll_postdiv.hw;
-
 	for (i = 0; i < ARRAY_SIZE(cpu_msm8996_clks); i++) {
 		ret = devm_clk_register_regmap(dev, cpu_msm8996_clks[i]);
 		if (ret)
@@ -474,22 +472,22 @@ static void qcom_cpu_clk_msm8996_acd_init(void __iomem *base)
 static int cpu_clk_notifier_cb(struct notifier_block *nb, unsigned long event,
 			       void *data)
 {
-	struct clk_cpu_8996_mux *cpuclk = to_clk_cpu_8996_mux_nb(nb);
+	struct clk_cpu_8996_pmux *cpuclk = to_clk_cpu_8996_pmux_nb(nb);
 	struct clk_notifier_data *cnd = data;
 	int ret;
 
 	switch (event) {
 	case PRE_RATE_CHANGE:
-		ret = clk_cpu_8996_mux_set_parent(&cpuclk->clkr.hw, ALT_INDEX);
+		ret = clk_cpu_8996_pmux_set_parent(&cpuclk->clkr.hw, ALT_INDEX);
 		qcom_cpu_clk_msm8996_acd_init(base);
 		break;
 	case POST_RATE_CHANGE:
 		if (cnd->new_rate < DIV_2_THRESHOLD)
-			ret = clk_cpu_8996_mux_set_parent(&cpuclk->clkr.hw,
-							  SMUX_INDEX);
+			ret = clk_cpu_8996_pmux_set_parent(&cpuclk->clkr.hw,
+							   SMUX_INDEX);
 		else
-			ret = clk_cpu_8996_mux_set_parent(&cpuclk->clkr.hw,
-							  ACD_INDEX);
+			ret = clk_cpu_8996_pmux_set_parent(&cpuclk->clkr.hw,
+							   ACD_INDEX);
 		break;
 	default:
 		ret = 0;
-- 
2.36.1