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Subject[PATCH v4 16/54] clk: mediatek: mt8167: Move apmixedsys as platform_driver in new file
Date
In preparation for migrating all other MT8167 clocks to the common
mtk_clk_simple_probe(), move apmixedsys clocks to a different file.
While at it, also migrate away from the legacy CLK_OF_DECLARE and
convert this clock driver to be a platform_driver instead.

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>
---
drivers/clk/mediatek/Makefile | 2 +-
drivers/clk/mediatek/clk-mt8167-apmixedsys.c | 143 +++++++++++++++++++
drivers/clk/mediatek/clk-mt8167.c | 102 -------------
3 files changed, 144 insertions(+), 103 deletions(-)
create mode 100644 drivers/clk/mediatek/clk-mt8167-apmixedsys.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index b004a47026d4..7fda42b76533 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -62,7 +62,7 @@ obj-$(CONFIG_COMMON_CLK_MT7986) += clk-mt7986-topckgen.o
obj-$(CONFIG_COMMON_CLK_MT7986) += clk-mt7986-infracfg.o
obj-$(CONFIG_COMMON_CLK_MT7986_ETHSYS) += clk-mt7986-eth.o
obj-$(CONFIG_COMMON_CLK_MT8135) += clk-mt8135.o
-obj-$(CONFIG_COMMON_CLK_MT8167) += clk-mt8167.o
+obj-$(CONFIG_COMMON_CLK_MT8167) += clk-mt8167.o clk-mt8167-apmixedsys.o
obj-$(CONFIG_COMMON_CLK_MT8167_AUDSYS) += clk-mt8167-aud.o
obj-$(CONFIG_COMMON_CLK_MT8167_IMGSYS) += clk-mt8167-img.o
obj-$(CONFIG_COMMON_CLK_MT8167_MFGCFG) += clk-mt8167-mfgcfg.o
diff --git a/drivers/clk/mediatek/clk-mt8167-apmixedsys.c b/drivers/clk/mediatek/clk-mt8167-apmixedsys.c
new file mode 100644
index 000000000000..ebd90365be5f
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8167-apmixedsys.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2020 MediaTek Inc.
+ * Copyright (c) 2020 BayLibre, SAS
+ * Copyright (c) 2023 Collabora, Ltd.
+ */
+
+#include <dt-bindings/clock/mt8167-clk.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include "clk-pll.h"
+#include "clk-mtk.h"
+
+static DEFINE_SPINLOCK(mt8167_apmixed_clk_lock);
+
+#define MT8167_PLL_FMAX (2500UL * MHZ)
+
+#define CON0_MT8167_RST_BAR BIT(27)
+
+#define PLL_B(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
+ _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
+ _pcw_shift, _div_table) { \
+ .id = _id, \
+ .name = _name, \
+ .reg = _reg, \
+ .pwr_reg = _pwr_reg, \
+ .en_mask = _en_mask, \
+ .flags = _flags, \
+ .rst_bar_mask = CON0_MT8167_RST_BAR, \
+ .fmax = MT8167_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, \
+ }
+
+#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
+ _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
+ _pcw_shift) \
+ PLL_B(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
+ _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \
+ NULL)
+
+static const struct mtk_pll_div_table mmpll_div_table[] = {
+ { .div = 0, .freq = MT8167_PLL_FMAX },
+ { .div = 1, .freq = 1000000000 },
+ { .div = 2, .freq = 604500000 },
+ { .div = 3, .freq = 253500000 },
+ { .div = 4, .freq = 126750000 },
+ { /* sentinel */ }
+};
+
+static const struct mtk_pll_data plls[] = {
+ PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0100, 0x0110, 0, 0,
+ 21, 0x0104, 24, 0, 0x0104, 0),
+ PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0120, 0x0130, 0,
+ HAVE_RST_BAR, 21, 0x0124, 24, 0, 0x0124, 0),
+ PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x0140, 0x0150, 0x30000000,
+ HAVE_RST_BAR, 7, 0x0144, 24, 0, 0x0144, 0),
+ PLL_B(CLK_APMIXED_MMPLL, "mmpll", 0x0160, 0x0170, 0, 0,
+ 21, 0x0164, 24, 0, 0x0164, 0, mmpll_div_table),
+ PLL(CLK_APMIXED_APLL1, "apll1", 0x0180, 0x0190, 0, 0,
+ 31, 0x0180, 1, 0x0194, 0x0184, 0),
+ PLL(CLK_APMIXED_APLL2, "apll2", 0x01A0, 0x01B0, 0, 0,
+ 31, 0x01A0, 1, 0x01B4, 0x01A4, 0),
+ PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x01C0, 0x01D0, 0, 0,
+ 21, 0x01C4, 24, 0, 0x01C4, 0),
+ PLL(CLK_APMIXED_LVDSPLL, "lvdspll", 0x01E0, 0x01F0, 0, 0,
+ 21, 0x01E4, 24, 0, 0x01E4, 0),
+};
+
+#define DIV_ADJ_FLAG(_id, _name, _parent, _reg, _shift, _width, _flag) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .div_reg = _reg, \
+ .div_shift = _shift, \
+ .div_width = _width, \
+ .clk_divider_flags = _flag, \
+}
+
+static const struct mtk_clk_divider adj_divs[] = {
+ DIV_ADJ_FLAG(CLK_APMIXED_HDMI_REF, "hdmi_ref", "tvdpll",
+ 0x1c4, 24, 3, CLK_DIVIDER_POWER_OF_TWO),
+};
+
+static int clk_mt8167_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, MT8167_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_dividers(adj_divs, ARRAY_SIZE(adj_divs), base,
+ &mt8167_apmixed_clk_lock, 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_dividers;
+
+ return 0;
+
+unregister_dividers:
+ mtk_clk_unregister_dividers(adj_divs, ARRAY_SIZE(adj_divs), 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_mt8167_apmixed[] = {
+ { .compatible = "mediatek,mt8167-apmixedsys" },
+ { /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8167_apmixed_drv = {
+ .probe = clk_mt8167_apmixed_probe,
+ .driver = {
+ .name = "clk-mt8167-apmixed",
+ .of_match_table = of_match_clk_mt8167_apmixed,
+ },
+};
+builtin_platform_driver(clk_mt8167_apmixed_drv)
diff --git a/drivers/clk/mediatek/clk-mt8167.c b/drivers/clk/mediatek/clk-mt8167.c
index 12384da4002d..a4ffdac6d94d 100644
--- a/drivers/clk/mediatek/clk-mt8167.c
+++ b/drivers/clk/mediatek/clk-mt8167.c
@@ -14,7 +14,6 @@

#include "clk-gate.h"
#include "clk-mtk.h"
-#include "clk-pll.h"

#include <dt-bindings/clock/mt8167-clk.h>

@@ -685,21 +684,6 @@ static const struct mtk_clk_divider top_adj_divs[] = {
0x0078, 0, 8),
};

-#define DIV_ADJ_FLAG(_id, _name, _parent, _reg, _shift, _width, _flag) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .div_reg = _reg, \
- .div_shift = _shift, \
- .div_width = _width, \
- .clk_divider_flags = _flag, \
-}
-
-static const struct mtk_clk_divider apmixed_adj_divs[] = {
- DIV_ADJ_FLAG(CLK_APMIXED_HDMI_REF, "hdmi_ref", "tvdpll",
- 0x1c4, 24, 3, CLK_DIVIDER_POWER_OF_TWO),
-};
-
static const struct mtk_gate_regs top0_cg_regs = {
.set_ofs = 0x50,
.clr_ofs = 0x80,
@@ -929,89 +913,3 @@ static void __init mtk_infracfg_init(struct device_node *node)
__func__, r);
}
CLK_OF_DECLARE(mtk_infracfg, "mediatek,mt8167-infracfg", mtk_infracfg_init);
-
-#define MT8167_PLL_FMAX (2500UL * MHZ)
-
-#define CON0_MT8167_RST_BAR BIT(27)
-
-#define PLL_B(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
- _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
- _pcw_shift, _div_table) { \
- .id = _id, \
- .name = _name, \
- .reg = _reg, \
- .pwr_reg = _pwr_reg, \
- .en_mask = _en_mask, \
- .flags = _flags, \
- .rst_bar_mask = CON0_MT8167_RST_BAR, \
- .fmax = MT8167_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, \
- }
-
-#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
- _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, \
- _pcw_shift) \
- PLL_B(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \
- _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \
- NULL)
-
-static const struct mtk_pll_div_table mmpll_div_table[] = {
- { .div = 0, .freq = MT8167_PLL_FMAX },
- { .div = 1, .freq = 1000000000 },
- { .div = 2, .freq = 604500000 },
- { .div = 3, .freq = 253500000 },
- { .div = 4, .freq = 126750000 },
- { } /* sentinel */
-};
-
-static const struct mtk_pll_data plls[] = {
- PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0100, 0x0110, 0, 0,
- 21, 0x0104, 24, 0, 0x0104, 0),
- PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0120, 0x0130, 0,
- HAVE_RST_BAR, 21, 0x0124, 24, 0, 0x0124, 0),
- PLL(CLK_APMIXED_UNIVPLL, "univpll", 0x0140, 0x0150, 0x30000000,
- HAVE_RST_BAR, 7, 0x0144, 24, 0, 0x0144, 0),
- PLL_B(CLK_APMIXED_MMPLL, "mmpll", 0x0160, 0x0170, 0, 0,
- 21, 0x0164, 24, 0, 0x0164, 0, mmpll_div_table),
- PLL(CLK_APMIXED_APLL1, "apll1", 0x0180, 0x0190, 0, 0,
- 31, 0x0180, 1, 0x0194, 0x0184, 0),
- PLL(CLK_APMIXED_APLL2, "apll2", 0x01A0, 0x01B0, 0, 0,
- 31, 0x01A0, 1, 0x01B4, 0x01A4, 0),
- PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x01C0, 0x01D0, 0, 0,
- 21, 0x01C4, 24, 0, 0x01C4, 0),
- PLL(CLK_APMIXED_LVDSPLL, "lvdspll", 0x01E0, 0x01F0, 0, 0,
- 21, 0x01E4, 24, 0, 0x01E4, 0),
-};
-
-static void __init mtk_apmixedsys_init(struct device_node *node)
-{
- struct clk_hw_onecell_data *clk_data;
- void __iomem *base;
- int r;
-
- base = of_iomap(node, 0);
- if (!base) {
- pr_err("%s(): ioremap failed\n", __func__);
- return;
- }
-
- clk_data = mtk_alloc_clk_data(MT8167_CLK_APMIXED_NR_CLK);
-
- mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
- mtk_clk_register_dividers(apmixed_adj_divs, ARRAY_SIZE(apmixed_adj_divs),
- base, &mt8167_clk_lock, clk_data);
-
- r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
- if (r)
- pr_err("%s(): could not register clock provider: %d\n",
- __func__, r);
-
-}
-CLK_OF_DECLARE(mtk_apmixedsys, "mediatek,mt8167-apmixedsys",
- mtk_apmixedsys_init);
--
2.39.1
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