[PATCH v6 12/54] clk: mediatek: mt8365: Convert simple_gate to mtk_gate clocks

AngeloGioacchino Del Regno
2023-03-06T14:09:10Z

On this SoC some clocks apparently don't have different offsets for
set/clr/sta registers hence they can be set, cleared and status-read
on one register: this means that it was possible to use simpler gate
clocks instead of custom mtk_gate ones.

In preparation for converting this clock driver to the common probe
mechanism for MediaTek clocks, perform a conversion from simple_gate
to mtk_gate clocks since the latter does provide implicit support
for simple gate clocks as well.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---
drivers/clk/mediatek/clk-mt8365.c | 189 +++++++++++++-----------------
1 file changed, 82 insertions(+), 107 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8365.c b/drivers/clk/mediatek/clk-mt8365.c
index 91449a7cf608..85fe7586a69b 100644
--- a/drivers/clk/mediatek/clk-mt8365.c
+++ b/drivers/clk/mediatek/clk-mt8365.c
@@ -1,6 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2022 MediaTek Inc.
+ * Copyright (C) 2023 Collabora Ltd.
+ * AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
*/

#include <dt-bindings/clock/mediatek,mt8365-clk.h>
@@ -393,12 +395,6 @@ static struct mtk_composite top_misc_mux_gates[] = {
0x0ec, 0, 2, 7),
};

-struct mt8365_clk_audio_mux {
- int id;
- const char *name;
- u8 shift;
-};
-
static struct mt8365_clk_audio_mux top_misc_muxes[] = {
{ CLK_TOP_APLL_I2S0_SEL, "apll_i2s0_sel", 11},
{ CLK_TOP_APLL_I2S1_SEL, "apll_i2s1_sel", 12},
@@ -569,35 +565,56 @@ static const struct mtk_clk_divider top_adj_divs[] = {
0x32c, 0, 8, CLK_DIVIDER_ROUND_CLOSEST),
};

-struct mtk_simple_gate {
- int id;
- const char *name;
- const char *parent;
- u32 reg;
- u8 shift;
- unsigned long gate_flags;
-};
-
-static const struct mtk_simple_gate top_clk_gates[] = {
- { CLK_TOP_CONN_32K, "conn_32k", "clk32k", 0x0, 10, CLK_GATE_SET_TO_DISABLE },
- { CLK_TOP_CONN_26M, "conn_26m", "clk26m", 0x0, 11, CLK_GATE_SET_TO_DISABLE },
- { CLK_TOP_DSP_32K, "dsp_32k", "clk32k", 0x0, 16, CLK_GATE_SET_TO_DISABLE },
- { CLK_TOP_DSP_26M, "dsp_26m", "clk26m", 0x0, 17, CLK_GATE_SET_TO_DISABLE },
- { CLK_TOP_USB20_48M_EN, "usb20_48m_en", "usb20_192m_d4", 0x104, 8, 0 },
- { CLK_TOP_UNIVPLL_48M_EN, "univpll_48m_en", "usb20_192m_d4", 0x104, 9, 0 },
- { CLK_TOP_LVDSTX_CLKDIG_EN, "lvdstx_dig_en", "lvdstx_dig_cts", 0x104, 20, 0 },
- { CLK_TOP_VPLL_DPIX_EN, "vpll_dpix_en", "vpll_dpix", 0x104, 21, 0 },
- { CLK_TOP_SSUSB_TOP_CK_EN, "ssusb_top_ck_en", NULL, 0x104, 22, 0 },
- { CLK_TOP_SSUSB_PHY_CK_EN, "ssusb_phy_ck_en", NULL, 0x104, 23, 0 },
- { CLK_TOP_AUD_I2S0_M, "aud_i2s0_m_ck", "apll12_ck_div0", 0x320, 0, 0 },
- { CLK_TOP_AUD_I2S1_M, "aud_i2s1_m_ck", "apll12_ck_div1", 0x320, 1, 0 },
- { CLK_TOP_AUD_I2S2_M, "aud_i2s2_m_ck", "apll12_ck_div2", 0x320, 2, 0 },
- { CLK_TOP_AUD_I2S3_M, "aud_i2s3_m_ck", "apll12_ck_div3", 0x320, 3, 0 },
- { CLK_TOP_AUD_TDMOUT_M, "aud_tdmout_m_ck", "apll12_ck_div4", 0x320, 4, 0 },
- { CLK_TOP_AUD_TDMOUT_B, "aud_tdmout_b_ck", "apll12_ck_div4b", 0x320, 5, 0 },
- { CLK_TOP_AUD_TDMIN_M, "aud_tdmin_m_ck", "apll12_ck_div5", 0x320, 6, 0 },
- { CLK_TOP_AUD_TDMIN_B, "aud_tdmin_b_ck", "apll12_ck_div5b", 0x320, 7, 0 },
- { CLK_TOP_AUD_SPDIF_M, "aud_spdif_m_ck", "apll12_ck_div6", 0x320, 8, 0 },
+static const struct mtk_gate_regs top0_cg_regs = {
+ .set_ofs = 0,
+ .clr_ofs = 0,
+ .sta_ofs = 0,
+};
+
+static const struct mtk_gate_regs top1_cg_regs = {
+ .set_ofs = 0x104,
+ .clr_ofs = 0x104,
+ .sta_ofs = 0x104,
+};
+
+static const struct mtk_gate_regs top2_cg_regs = {
+ .set_ofs = 0x320,
+ .clr_ofs = 0x320,
+ .sta_ofs = 0x320,
+};
+
+#define GATE_TOP0(_id, _name, _parent, _shift) \
+ GATE_MTK(_id, _name, _parent, &top0_cg_regs, \
+ _shift, &mtk_clk_gate_ops_no_setclr_inv)
+
+#define GATE_TOP1(_id, _name, _parent, _shift) \
+ GATE_MTK(_id, _name, _parent, &top1_cg_regs, \
+ _shift, &mtk_clk_gate_ops_no_setclr)
+
+#define GATE_TOP2(_id, _name, _parent, _shift) \
+ GATE_MTK(_id, _name, _parent, &top2_cg_regs, \
+ _shift, &mtk_clk_gate_ops_no_setclr)
+
+static const struct mtk_gate top_clk_gates[] = {
+ GATE_TOP0(CLK_TOP_CONN_32K, "conn_32k", "clk32k", 10),
+ GATE_TOP0(CLK_TOP_CONN_26M, "conn_26m", "clk26m", 11),
+ GATE_TOP0(CLK_TOP_DSP_32K, "dsp_32k", "clk32k", 16),
+ GATE_TOP0(CLK_TOP_DSP_26M, "dsp_26m", "clk26m", 17),
+ GATE_TOP1(CLK_TOP_USB20_48M_EN, "usb20_48m_en", "usb20_192m_d4", 8),
+ GATE_TOP1(CLK_TOP_UNIVPLL_48M_EN, "univpll_48m_en", "usb20_192m_d4", 9),
+ GATE_TOP1(CLK_TOP_LVDSTX_CLKDIG_EN, "lvdstx_dig_en", "lvdstx_dig_cts", 20),
+ GATE_TOP1(CLK_TOP_VPLL_DPIX_EN, "vpll_dpix_en", "vpll_dpix", 21),
+ GATE_TOP1(CLK_TOP_SSUSB_TOP_CK_EN, "ssusb_top_ck_en", NULL, 22),
+ GATE_TOP1(CLK_TOP_SSUSB_PHY_CK_EN, "ssusb_phy_ck_en", NULL, 23),
+ GATE_TOP2(CLK_TOP_AUD_I2S0_M, "aud_i2s0_m_ck", "apll12_ck_div0", 0),
+ GATE_TOP2(CLK_TOP_AUD_I2S1_M, "aud_i2s1_m_ck", "apll12_ck_div1", 1),
+ GATE_TOP2(CLK_TOP_AUD_I2S2_M, "aud_i2s2_m_ck", "apll12_ck_div2", 2),
+ GATE_TOP2(CLK_TOP_AUD_I2S3_M, "aud_i2s3_m_ck", "apll12_ck_div3", 3),
+ GATE_TOP2(CLK_TOP_AUD_TDMOUT_M, "aud_tdmout_m_ck", "apll12_ck_div4", 4),
+ GATE_TOP2(CLK_TOP_AUD_TDMOUT_B, "aud_tdmout_b_ck", "apll12_ck_div4b", 5),
+ GATE_TOP2(CLK_TOP_AUD_TDMIN_M, "aud_tdmin_m_ck", "apll12_ck_div5", 6),
+ GATE_TOP2(CLK_TOP_AUD_TDMIN_B, "aud_tdmin_b_ck", "apll12_ck_div5b", 7),
+ GATE_TOP2(CLK_TOP_AUD_SPDIF_M, "aud_spdif_m_ck", "apll12_ck_div6", 8),
};

static const struct mtk_gate_regs ifr2_cg_regs = {
@@ -630,50 +647,24 @@ static const struct mtk_gate_regs ifr6_cg_regs = {
.sta_ofs = 0xd8,
};

-#define GATE_IFR2(_id, _name, _parent, _shift) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .regs = &ifr2_cg_regs, \
- .shift = _shift, \
- .ops = &mtk_clk_gate_ops_setclr, \
- }
+#define GATE_IFRX(_id, _name, _parent, _shift, _regs) \
+ GATE_MTK(_id, _name, _parent, _regs, _shift, \
+ &mtk_clk_gate_ops_setclr)

-#define GATE_IFR3(_id, _name, _parent, _shift) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .regs = &ifr3_cg_regs, \
- .shift = _shift, \
- .ops = &mtk_clk_gate_ops_setclr, \
- }
+#define GATE_IFR2(_id, _name, _parent, _shift) \
+ GATE_IFRX(_id, _name, _parent, _shift, &ifr2_cg_regs)

-#define GATE_IFR4(_id, _name, _parent, _shift) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .regs = &ifr4_cg_regs, \
- .shift = _shift, \
- .ops = &mtk_clk_gate_ops_setclr, \
- }
+#define GATE_IFR3(_id, _name, _parent, _shift) \
+ GATE_IFRX(_id, _name, _parent, _shift, &ifr3_cg_regs)

-#define GATE_IFR5(_id, _name, _parent, _shift) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .regs = &ifr5_cg_regs, \
- .shift = _shift, \
- .ops = &mtk_clk_gate_ops_setclr, \
- }
+#define GATE_IFR4(_id, _name, _parent, _shift) \
+ GATE_IFRX(_id, _name, _parent, _shift, &ifr4_cg_regs)

-#define GATE_IFR6(_id, _name, _parent, _shift) { \
- .id = _id, \
- .name = _name, \
- .parent_name = _parent, \
- .regs = &ifr6_cg_regs, \
- .shift = _shift, \
- .ops = &mtk_clk_gate_ops_setclr, \
- }
+#define GATE_IFR5(_id, _name, _parent, _shift) \
+ GATE_IFRX(_id, _name, _parent, _shift, &ifr5_cg_regs)
+
+#define GATE_IFR6(_id, _name, _parent, _shift) \
+ GATE_IFRX(_id, _name, _parent, _shift, &ifr6_cg_regs)

static const struct mtk_gate ifr_clks[] = {
/* IFR2 */
@@ -752,33 +743,16 @@ static const struct mtk_gate ifr_clks[] = {
GATE_IFR6(CLK_IFR_SSUSB_XHCI, "ifr_ssusb_xhci", "ssusb_xhci_sel", 11),
};

-static const struct mtk_simple_gate peri_clks[] = {
- { CLK_PERIAXI, "periaxi", "axi_sel", 0x20c, 31, 0 },
+static const struct mtk_gate_regs peri_cg_regs = {
+ .set_ofs = 0x20c,
+ .clr_ofs = 0x20c,
+ .sta_ofs = 0x20c,
};

-static int
-clk_mt8365_register_mtk_simple_gates(struct device *dev, void __iomem *base,
- struct clk_hw_onecell_data *clk_data,
- const struct mtk_simple_gate *gates,
- unsigned int num_gates)
-{
- unsigned int i;
-
- for (i = 0; i != num_gates; ++i) {
- const struct mtk_simple_gate *gate = &gates[i];
- struct clk_hw *hw;
-
- hw = devm_clk_hw_register_gate(dev, gate->name, gate->parent, 0,
- base + gate->reg, gate->shift,
- gate->gate_flags, NULL);
- if (IS_ERR(hw))
- return PTR_ERR(hw);
-
- clk_data->hws[gate->id] = hw;
- }
-
- return 0;
-}
+static const struct mtk_gate peri_clks[] = {
+ GATE_MTK(CLK_PERIAXI, "periaxi", "axi_sel", &peri_cg_regs, 31,
+ &mtk_clk_gate_ops_no_setclr),
+};

static int clk_mt8365_top_probe(struct platform_device *pdev)
{
@@ -840,17 +814,18 @@ static int clk_mt8365_top_probe(struct platform_device *pdev)
if (ret)
goto unregister_composites;

- ret = clk_mt8365_register_mtk_simple_gates(dev, base, clk_data,
- top_clk_gates,
- ARRAY_SIZE(top_clk_gates));
+ ret = mtk_clk_register_gates(&pdev->dev, node, top_clk_gates,
+ ARRAY_SIZE(top_clk_gates), clk_data);
if (ret)
goto unregister_dividers;

ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (ret)
- goto unregister_dividers;
+ goto unregister_gates;

return 0;
+unregister_gates:
+ mtk_clk_unregister_gates(top_clk_gates, ARRAY_SIZE(top_clk_gates), clk_data);
unregister_dividers:
mtk_clk_unregister_dividers(top_adj_divs, ARRAY_SIZE(top_adj_divs),
clk_data);
@@ -915,9 +890,9 @@ static int clk_mt8365_peri_probe(struct platform_device *pdev)
if (!clk_data)
return -ENOMEM;

- ret = clk_mt8365_register_mtk_simple_gates(dev, base, clk_data,
- peri_clks,
- ARRAY_SIZE(peri_clks));
+
+ ret = mtk_clk_register_gates(&pdev->dev, node, peri_clks,
+ ARRAY_SIZE(peri_clks), clk_data);
if (ret)
return ret;

--
2.39.2