clk: mediatek: mt7622: Move apmixedsys clock driver to its own file

In preparation for migrating mt7622 clocks to the common simple
probe mechanism, move apmixedsys clocks to a different file.
While at it, use the builtin_platform_driver() macro for it.

During the conversion, error handling was added to the apmixedsys
probe function.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230306140543.1813621-25-angelogioacchino.delregno@collabora.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/Makefile

@@ -46,7 +46,7 @@ obj-$(CONFIG_COMMON_CLK_MT2712_MFGCFG) += clk-mt2712-mfg.o
 obj-$(CONFIG_COMMON_CLK_MT2712_MMSYS) += clk-mt2712-mm.o
 obj-$(CONFIG_COMMON_CLK_MT2712_VDECSYS) += clk-mt2712-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT2712_VENCSYS) += clk-mt2712-venc.o
-obj-$(CONFIG_COMMON_CLK_MT7622) += clk-mt7622.o
+obj-$(CONFIG_COMMON_CLK_MT7622) += clk-mt7622-apmixedsys.o clk-mt7622.o
 obj-$(CONFIG_COMMON_CLK_MT7622_ETHSYS) += clk-mt7622-eth.o
 obj-$(CONFIG_COMMON_CLK_MT7622_HIFSYS) += clk-mt7622-hif.o
 obj-$(CONFIG_COMMON_CLK_MT7622_AUDSYS) += clk-mt7622-aud.o

drivers/clk/mediatek/clk-mt7622-apmixedsys.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017 MediaTek Inc.
+ * Copyright (c) 2023 Collabora, Ltd.
+ *               AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <dt-bindings/clock/mt7622-clk.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+#include "clk-pll.h"
+
+#define MT7622_PLL_FMAX		(2500UL * MHZ)
+#define CON0_MT7622_RST_BAR	BIT(27)
+
+#define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
+			_pd_reg, _pd_shift, _tuner_reg, _pcw_reg,	\
+			_pcw_shift, _div_table, _parent_name) {		\
+		.id = _id,						\
+		.name = _name,						\
+		.reg = _reg,						\
+		.pwr_reg = _pwr_reg,					\
+		.en_mask = _en_mask,					\
+		.flags = _flags,					\
+		.rst_bar_mask = CON0_MT7622_RST_BAR,			\
+		.fmax = MT7622_PLL_FMAX,				\
+		.pcwbits = _pcwbits,					\
+		.pd_reg = _pd_reg,					\
+		.pd_shift = _pd_shift,					\
+		.tuner_reg = _tuner_reg,				\
+		.pcw_reg = _pcw_reg,					\
+		.pcw_shift = _pcw_shift,				\
+		.div_table = _div_table,				\
+		.parent_name = _parent_name,				\
+	}
+
+#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,	\
+			_pd_reg, _pd_shift, _tuner_reg, _pcw_reg,	\
+			_pcw_shift)					\
+	PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
+		 _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift,  \
+		 NULL, "clkxtal")
+
+static const struct mtk_gate_regs apmixed_cg_regs = {
+	.set_ofs = 0x8,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x8,
+};
+
+#define GATE_APMIXED_AO(_id, _name, _parent, _shift)			\
+	GATE_MTK_FLAGS(_id, _name, _parent, &apmixed_cg_regs, _shift,	\
+		 &mtk_clk_gate_ops_no_setclr_inv, CLK_IS_CRITICAL)
+
+static const struct mtk_pll_data plls[] = {
+	PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0,
+	    PLL_AO, 21, 0x0204, 24, 0, 0x0204, 0),
+	PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0210, 0x021C, 0,
+	    HAVE_RST_BAR, 21, 0x0214, 24, 0, 0x0214, 0),
+	PLL(CLK_APMIXED_UNIV2PLL, "univ2pll", 0x0220, 0x022C, 0,
+	    HAVE_RST_BAR, 7, 0x0224, 24, 0, 0x0224, 14),
+	PLL(CLK_APMIXED_ETH1PLL, "eth1pll", 0x0300, 0x0310, 0,
+	    0, 21, 0x0300, 1, 0, 0x0304, 0),
+	PLL(CLK_APMIXED_ETH2PLL, "eth2pll", 0x0314, 0x0320, 0,
+	    0, 21, 0x0314, 1, 0, 0x0318, 0),
+	PLL(CLK_APMIXED_AUD1PLL, "aud1pll", 0x0324, 0x0330, 0,
+	    0, 31, 0x0324, 1, 0, 0x0328, 0),
+	PLL(CLK_APMIXED_AUD2PLL, "aud2pll", 0x0334, 0x0340, 0,
+	    0, 31, 0x0334, 1, 0, 0x0338, 0),
+	PLL(CLK_APMIXED_TRGPLL, "trgpll", 0x0344, 0x0354, 0,
+	    0, 21, 0x0344, 1, 0, 0x0348, 0),
+	PLL(CLK_APMIXED_SGMIPLL, "sgmipll", 0x0358, 0x0368, 0,
+	    0, 21, 0x0358, 1, 0, 0x035C, 0),
+};
+
+static const struct mtk_gate apmixed_clks[] = {
+	GATE_APMIXED_AO(CLK_APMIXED_MAIN_CORE_EN, "main_core_en", "mainpll", 5),
+};
+
+static int clk_mt7622_apmixed_probe(struct platform_device *pdev)
+{
+	void __iomem *base;
+	struct clk_hw_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	int ret;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	clk_data = mtk_devm_alloc_clk_data(dev, CLK_APMIXED_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	ret = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
+	if (ret)
+		return ret;
+
+	ret = mtk_clk_register_gates(&pdev->dev, node, apmixed_clks,
+				     ARRAY_SIZE(apmixed_clks), clk_data);
+	if (ret)
+		goto unregister_plls;
+
+	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+	if (ret)
+		goto unregister_gates;
+
+	return 0;
+
+unregister_gates:
+	mtk_clk_unregister_gates(apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
+unregister_plls:
+	mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
+
+	return ret;
+}
+
+static const struct of_device_id of_match_clk_mt7622_apmixed[] = {
+	{ .compatible = "mediatek,mt7622-apmixedsys" },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver clk_mt7622_apmixed_drv = {
+	.probe = clk_mt7622_apmixed_probe,
+	.driver = {
+		.name = "clk-mt7622-apmixed",
+		.of_match_table = of_match_clk_mt7622_apmixed,
+	},
+};
+builtin_platform_driver(clk_mt7622_apmixed_drv)
+
+MODULE_DESCRIPTION("MediaTek MT7622 apmixedsys clocks driver");
+MODULE_LICENSE("GPL");

drivers/clk/mediatek/clk-mt7622.c

@@ -14,46 +14,10 @@
 #include "clk-cpumux.h"
 #include "clk-gate.h"
 #include "clk-mtk.h"
-#include "clk-pll.h"
 
 #include <dt-bindings/clock/mt7622-clk.h>
 #include <linux/clk.h> /* for consumer */
 
-#define MT7622_PLL_FMAX		(2500UL * MHZ)
-#define CON0_MT7622_RST_BAR	BIT(27)
-
-#define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
-			_pd_reg, _pd_shift, _tuner_reg, _pcw_reg,	\
-			_pcw_shift, _div_table, _parent_name) {		\
-		.id = _id,						\
-		.name = _name,						\
-		.reg = _reg,						\
-		.pwr_reg = _pwr_reg,					\
-		.en_mask = _en_mask,					\
-		.flags = _flags,					\
-		.rst_bar_mask = CON0_MT7622_RST_BAR,			\
-		.fmax = MT7622_PLL_FMAX,				\
-		.pcwbits = _pcwbits,					\
-		.pd_reg = _pd_reg,					\
-		.pd_shift = _pd_shift,					\
-		.tuner_reg = _tuner_reg,				\
-		.pcw_reg = _pcw_reg,					\
-		.pcw_shift = _pcw_shift,				\
-		.div_table = _div_table,				\
-		.parent_name = _parent_name,				\
-	}
-
-#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,	\
-			_pd_reg, _pd_shift, _tuner_reg, _pcw_reg,	\
-			_pcw_shift)					\
-	PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,\
-		 _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift,  \
-		 NULL, "clkxtal")
-
-#define GATE_APMIXED_AO(_id, _name, _parent, _shift)			\
-	GATE_MTK_FLAGS(_id, _name, _parent, &apmixed_cg_regs, _shift,	\
-		 &mtk_clk_gate_ops_no_setclr_inv, CLK_IS_CRITICAL)
-
 #define GATE_INFRA(_id, _name, _parent, _shift)				\
 	GATE_MTK(_id, _name, _parent, &infra_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
 
@@ -261,12 +225,6 @@ static const char * const peribus_ck_parents[] = {
 	"syspll1_d4"
 };
 
-static const struct mtk_gate_regs apmixed_cg_regs = {
-	.set_ofs = 0x8,
-	.clr_ofs = 0x8,
-	.sta_ofs = 0x8,
-};
-
 static const struct mtk_gate_regs infra_cg_regs = {
 	.set_ofs = 0x40,
 	.clr_ofs = 0x44,
@@ -297,31 +255,6 @@ static const struct mtk_gate_regs peri1_cg_regs = {
 	.sta_ofs = 0x1C,
 };
 
-static const struct mtk_pll_data plls[] = {
-	PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0,
-	    PLL_AO, 21, 0x0204, 24, 0, 0x0204, 0),
-	PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0210, 0x021C, 0,
-	    HAVE_RST_BAR, 21, 0x0214, 24, 0, 0x0214, 0),
-	PLL(CLK_APMIXED_UNIV2PLL, "univ2pll", 0x0220, 0x022C, 0,
-	    HAVE_RST_BAR, 7, 0x0224, 24, 0, 0x0224, 14),
-	PLL(CLK_APMIXED_ETH1PLL, "eth1pll", 0x0300, 0x0310, 0,
-	    0, 21, 0x0300, 1, 0, 0x0304, 0),
-	PLL(CLK_APMIXED_ETH2PLL, "eth2pll", 0x0314, 0x0320, 0,
-	    0, 21, 0x0314, 1, 0, 0x0318, 0),
-	PLL(CLK_APMIXED_AUD1PLL, "aud1pll", 0x0324, 0x0330, 0,
-	    0, 31, 0x0324, 1, 0, 0x0328, 0),
-	PLL(CLK_APMIXED_AUD2PLL, "aud2pll", 0x0334, 0x0340, 0,
-	    0, 31, 0x0334, 1, 0, 0x0338, 0),
-	PLL(CLK_APMIXED_TRGPLL, "trgpll", 0x0344, 0x0354, 0,
-	    0, 21, 0x0344, 1, 0, 0x0348, 0),
-	PLL(CLK_APMIXED_SGMIPLL, "sgmipll", 0x0358, 0x0368, 0,
-	    0, 21, 0x0358, 1, 0, 0x035C, 0),
-};
-
-static const struct mtk_gate apmixed_clks[] = {
-	GATE_APMIXED_AO(CLK_APMIXED_MAIN_CORE_EN, "main_core_en", "mainpll", 5),
-};
-
 static const struct mtk_gate infra_clks[] = {
 	GATE_INFRA(CLK_INFRA_DBGCLK_PD, "infra_dbgclk_pd", "axi_sel", 0),
 	GATE_INFRA(CLK_INFRA_TRNG, "trng_ck", "axi_sel", 2),
@@ -652,23 +585,6 @@ static int mtk_infrasys_init(struct platform_device *pdev)
 	return 0;
 }
 
-static int mtk_apmixedsys_init(struct platform_device *pdev)
-{
-	struct clk_hw_onecell_data *clk_data;
-	struct device_node *node = pdev->dev.of_node;
-
-	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
-	if (!clk_data)
-		return -ENOMEM;
-
-	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls),
-			      clk_data);
-
-	mtk_clk_register_gates(&pdev->dev, node, apmixed_clks,
-			       ARRAY_SIZE(apmixed_clks), clk_data);
-
-	return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
-}
 
 static int mtk_pericfg_init(struct platform_device *pdev)
 {
@@ -701,9 +617,6 @@ static int mtk_pericfg_init(struct platform_device *pdev)
 
 static const struct of_device_id of_match_clk_mt7622[] = {
 	{
-		.compatible = "mediatek,mt7622-apmixedsys",
-		.data = mtk_apmixedsys_init,
-	}, {
 		.compatible = "mediatek,mt7622-infracfg",
 		.data = mtk_infrasys_init,
 	}, {