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From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
To:     mturquette@baylibre.com
Cc:     sboyd@kernel.org, matthias.bgg@gmail.com, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org,
        angelogioacchino.delregno@collabora.com, wenst@chromium.org,
        johnson.wang@mediatek.com, miles.chen@mediatek.com,
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        sam.shih@mediatek.com, y.oudjana@protonmail.com,
        nfraprado@collabora.com, rex-bc.chen@mediatek.com,
        ryder.lee@kernel.org, daniel@makrotopia.org,
        jose.exposito89@gmail.com, yangyingliang@huawei.com,
        pablo.sun@mediatek.com, msp@baylibre.com, weiyi.lu@mediatek.com,
        ikjn@chromium.org, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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        kernel@collabora.com
Subject: [PATCH v2 09/23] clk: mediatek: mt8173: Remove mtk_clk_enable_critical()
Date:   Fri, 23 Dec 2022 10:42:45 +0100
Message-Id: <20221223094259.87373-10-angelogioacchino.delregno@collabora.com>
In-Reply-To: <20221223094259.87373-1-angelogioacchino.delregno@collabora.com>
References: <20221223094259.87373-1-angelogioacchino.delregno@collabora.com>
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The entire point of mtk_clk_enable_critical() is to raise the refcount
of some clocks so that they won't be turned off during runtime, but
this is the same as what the CLK_IS_CRITICAL flag does.

Set CLK_IS_CRITICAL on all of the critical clocks and remove the
aforementioned function as a cleanup.

No functional changes.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/clk/mediatek/clk-mt8173.c | 41 ++++++++++++-------------------
 1 file changed, 16 insertions(+), 25 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8173.c b/drivers/clk/mediatek/clk-mt8173.c
index 70cdc0719658..02231f8ba6d9 100644
--- a/drivers/clk/mediatek/clk-mt8173.c
+++ b/drivers/clk/mediatek/clk-mt8173.c
@@ -546,8 +546,11 @@ static const struct mtk_composite cpu_muxes[] = {
 static const struct mtk_composite top_muxes[] = {
 	/* CLK_CFG_0 */
 	MUX(CLK_TOP_AXI_SEL, "axi_sel", axi_parents, 0x0040, 0, 3),
-	MUX(CLK_TOP_MEM_SEL, "mem_sel", mem_parents, 0x0040, 8, 1),
-	MUX_GATE(CLK_TOP_DDRPHYCFG_SEL, "ddrphycfg_sel", ddrphycfg_parents, 0x0040, 16, 1, 23),
+	MUX_FLAGS(CLK_TOP_MEM_SEL, "mem_sel", mem_parents, 0x0040, 8, 1,
+		  CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
+	MUX_GATE_FLAGS(CLK_TOP_DDRPHYCFG_SEL, "ddrphycfg_sel",
+		       ddrphycfg_parents, 0x0040, 16, 1, 23,
+		       CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
 	MUX_GATE(CLK_TOP_MM_SEL, "mm_sel", mm_parents, 0x0040, 24, 4, 31),
 	/* CLK_CFG_1 */
 	MUX_GATE(CLK_TOP_PWM_SEL, "pwm_sel", pwm_parents, 0x0050, 0, 2, 7),
@@ -581,7 +584,9 @@ static const struct mtk_composite top_muxes[] = {
 	 */
 	MUX_GATE_FLAGS(CLK_TOP_DPI0_SEL, "dpi0_sel", dpi0_parents, 0x00a0, 0, 3, 7, 0),
 	MUX_GATE(CLK_TOP_IRDA_SEL, "irda_sel", irda_parents, 0x00a0, 8, 2, 15),
-	MUX_GATE(CLK_TOP_CCI400_SEL, "cci400_sel", cci400_parents, 0x00a0, 16, 3, 23),
+	MUX_GATE_FLAGS(CLK_TOP_CCI400_SEL, "cci400_sel",
+		       cci400_parents, 0x00a0, 16, 3, 23,
+		       CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
 	MUX_GATE(CLK_TOP_AUD_1_SEL, "aud_1_sel", aud_1_parents, 0x00a0, 24, 2, 31),
 	/* CLK_CFG_7 */
 	MUX_GATE(CLK_TOP_AUD_2_SEL, "aud_2_sel", aud_2_parents, 0x00b0, 0, 2, 7),
@@ -596,7 +601,8 @@ static const struct mtk_composite top_muxes[] = {
 	MUX_GATE(CLK_TOP_MSDC50_2_H_SEL, "msdc50_2_h_sel", msdc50_2_h_parents, 0x00d0, 0, 3, 7),
 	MUX_GATE(CLK_TOP_HDCP_SEL, "hdcp_sel", hdcp_parents, 0x00d0, 8, 2, 15),
 	MUX_GATE(CLK_TOP_HDCP_24M_SEL, "hdcp_24m_sel", hdcp_24m_parents, 0x00d0, 16, 2, 23),
-	MUX(CLK_TOP_RTC_SEL, "rtc_sel", rtc_parents, 0x00d0, 24, 2),
+	MUX_FLAGS(CLK_TOP_RTC_SEL, "rtc_sel", rtc_parents, 0x00d0, 24, 2,
+		  CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
 
 	DIV_GATE(CLK_TOP_APLL1_DIV0, "apll1_div0", "aud_1_sel", 0x12c, 8, 0x120, 4, 24),
 	DIV_GATE(CLK_TOP_APLL1_DIV1, "apll1_div1", "aud_1_sel", 0x12c, 9, 0x124, 8, 0),
@@ -846,23 +852,8 @@ static const struct mtk_clk_rst_desc clk_rst_desc[] = {
 	}
 };
 
-static struct clk_hw_onecell_data *mt8173_top_clk_data;
-static struct clk_hw_onecell_data *mt8173_pll_clk_data;
 static struct clk_hw_onecell_data *infra_clk_data;
 
-static void mtk_clk_enable_critical(void)
-{
-	if (!mt8173_top_clk_data || !mt8173_pll_clk_data)
-		return;
-
-	clk_prepare_enable(mt8173_pll_clk_data->hws[CLK_APMIXED_ARMCA15PLL]->clk);
-	clk_prepare_enable(mt8173_pll_clk_data->hws[CLK_APMIXED_ARMCA7PLL]->clk);
-	clk_prepare_enable(mt8173_top_clk_data->hws[CLK_TOP_MEM_SEL]->clk);
-	clk_prepare_enable(mt8173_top_clk_data->hws[CLK_TOP_DDRPHYCFG_SEL]->clk);
-	clk_prepare_enable(mt8173_top_clk_data->hws[CLK_TOP_CCI400_SEL]->clk);
-	clk_prepare_enable(mt8173_top_clk_data->hws[CLK_TOP_RTC_SEL]->clk);
-}
-
 static int clk_mt8173_topck_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
@@ -874,7 +865,7 @@ static int clk_mt8173_topck_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	mt8173_top_clk_data = clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
+	clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
 	if (IS_ERR_OR_NULL(clk_data))
 		return -ENOMEM;
 
@@ -895,7 +886,6 @@ static int clk_mt8173_topck_probe(struct platform_device *pdev)
 	if (r)
 		goto unregister_composites;
 
-	mtk_clk_enable_critical();
 	return 0;
 
 unregister_composites:
@@ -1048,8 +1038,10 @@ static const struct mtk_pll_div_table mmpll_div_table[] = {
 };
 
 static const struct mtk_pll_data plls[] = {
-	PLL(CLK_APMIXED_ARMCA15PLL, "armca15pll", 0x200, 0x20c, 0, 0, 21, 0x204, 24, 0x0, 0x204, 0),
-	PLL(CLK_APMIXED_ARMCA7PLL, "armca7pll", 0x210, 0x21c, 0, 0, 21, 0x214, 24, 0x0, 0x214, 0),
+	PLL(CLK_APMIXED_ARMCA15PLL, "armca15pll", 0x200, 0x20c, 0, PLL_AO,
+	    21, 0x204, 24, 0x0, 0x204, 0),
+	PLL(CLK_APMIXED_ARMCA7PLL, "armca7pll", 0x210, 0x21c, 0, PLL_AO,
+	    21, 0x214, 24, 0x0, 0x214, 0),
 	PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x220, 0x22c, 0xf0000100, HAVE_RST_BAR, 21, 0x220, 4, 0x0, 0x224, 0),
 	PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x230, 0x23c, 0xfe000000, HAVE_RST_BAR, 7, 0x230, 4, 0x0, 0x234, 14),
 	PLL_B(CLK_APMIXED_MMPLL, "mmpll", 0x240, 0x24c, 0, 0, 21, 0x244, 24, 0x0, 0x244, 0, mmpll_div_table),
@@ -1076,7 +1068,7 @@ static int clk_mt8173_apmixed_probe(struct platform_device *pdev)
 	if (!base)
 		return PTR_ERR(base);
 
-	mt8173_pll_clk_data = clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
+	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
 	if (IS_ERR_OR_NULL(clk_data))
 		return -ENOMEM;
 
@@ -1101,7 +1093,6 @@ static int clk_mt8173_apmixed_probe(struct platform_device *pdev)
 	if (r)
 		goto unregister_ref2usb;
 
-	mtk_clk_enable_critical();
 	return 0;
 
 unregister_ref2usb:
-- 
2.39.0