clk: mediatek: add clock support for MT7622 SoC

Add all supported clocks exported from every susbystem found on MT7622 SoC
such as topckgen, apmixedsys, infracfg, pericfg , pciessys, ssusbsys,
ethsys and audsys.

Signed-off-by: Chen Zhong <chen.zhong@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

1 files changed, 195 insertions, 0 deletions

diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
new file mode 100644
index 000000000000..fad7d9fc53ba
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt7622-aud.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2017 MediaTek Inc.
+ * Author: Chen Zhong <chen.zhong@mediatek.com>
+ *	   Sean Wang <sean.wang@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt7622-clk.h>
+
+#define GATE_AUDIO0(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio0_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO1(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio1_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO2(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio2_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO3(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio3_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+static const struct mtk_gate_regs audio0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x0,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs audio1_cg_regs = {
+	.set_ofs = 0x10,
+	.clr_ofs = 0x10,
+	.sta_ofs = 0x10,
+};
+
+static const struct mtk_gate_regs audio2_cg_regs = {
+	.set_ofs = 0x14,
+	.clr_ofs = 0x14,
+	.sta_ofs = 0x14,
+};
+
+static const struct mtk_gate_regs audio3_cg_regs = {
+	.set_ofs = 0x634,
+	.clr_ofs = 0x634,
+	.sta_ofs = 0x634,
+};
+
+static const struct mtk_gate audio_clks[] = {
+	/* AUDIO0 */
+	GATE_AUDIO0(CLK_AUDIO_AFE, "audio_afe", "rtc", 2),
+	GATE_AUDIO0(CLK_AUDIO_HDMI, "audio_hdmi", "apll1_ck_sel", 20),
+	GATE_AUDIO0(CLK_AUDIO_SPDF, "audio_spdf", "apll1_ck_sel", 21),
+	GATE_AUDIO0(CLK_AUDIO_APLL, "audio_apll", "apll1_ck_sel", 23),
+	/* AUDIO1 */
+	GATE_AUDIO1(CLK_AUDIO_I2SIN1, "audio_i2sin1", "a1sys_hp_sel", 0),
+	GATE_AUDIO1(CLK_AUDIO_I2SIN2, "audio_i2sin2", "a1sys_hp_sel", 1),
+	GATE_AUDIO1(CLK_AUDIO_I2SIN3, "audio_i2sin3", "a1sys_hp_sel", 2),
+	GATE_AUDIO1(CLK_AUDIO_I2SIN4, "audio_i2sin4", "a1sys_hp_sel", 3),
+	GATE_AUDIO1(CLK_AUDIO_I2SO1, "audio_i2so1", "a1sys_hp_sel", 6),
+	GATE_AUDIO1(CLK_AUDIO_I2SO2, "audio_i2so2", "a1sys_hp_sel", 7),
+	GATE_AUDIO1(CLK_AUDIO_I2SO3, "audio_i2so3", "a1sys_hp_sel", 8),
+	GATE_AUDIO1(CLK_AUDIO_I2SO4, "audio_i2so4", "a1sys_hp_sel", 9),
+	GATE_AUDIO1(CLK_AUDIO_ASRCI1, "audio_asrci1", "asm_h_sel", 12),
+	GATE_AUDIO1(CLK_AUDIO_ASRCI2, "audio_asrci2", "asm_h_sel", 13),
+	GATE_AUDIO1(CLK_AUDIO_ASRCO1, "audio_asrco1", "asm_h_sel", 14),
+	GATE_AUDIO1(CLK_AUDIO_ASRCO2, "audio_asrco2", "asm_h_sel", 15),
+	GATE_AUDIO1(CLK_AUDIO_INTDIR, "audio_intdir", "intdir_sel", 20),
+	GATE_AUDIO1(CLK_AUDIO_A1SYS, "audio_a1sys", "a1sys_hp_sel", 21),
+	GATE_AUDIO1(CLK_AUDIO_A2SYS, "audio_a2sys", "a2sys_hp_sel", 22),
+	/* AUDIO2 */
+	GATE_AUDIO2(CLK_AUDIO_UL1, "audio_ul1", "a1sys_hp_sel", 0),
+	GATE_AUDIO2(CLK_AUDIO_UL2, "audio_ul2", "a1sys_hp_sel", 1),
+	GATE_AUDIO2(CLK_AUDIO_UL3, "audio_ul3", "a1sys_hp_sel", 2),
+	GATE_AUDIO2(CLK_AUDIO_UL4, "audio_ul4", "a1sys_hp_sel", 3),
+	GATE_AUDIO2(CLK_AUDIO_UL5, "audio_ul5", "a1sys_hp_sel", 4),
+	GATE_AUDIO2(CLK_AUDIO_UL6, "audio_ul6", "a1sys_hp_sel", 5),
+	GATE_AUDIO2(CLK_AUDIO_DL1, "audio_dl1", "a1sys_hp_sel", 6),
+	GATE_AUDIO2(CLK_AUDIO_DL2, "audio_dl2", "a1sys_hp_sel", 7),
+	GATE_AUDIO2(CLK_AUDIO_DL3, "audio_dl3", "a1sys_hp_sel", 8),
+	GATE_AUDIO2(CLK_AUDIO_DL4, "audio_dl4", "a1sys_hp_sel", 9),
+	GATE_AUDIO2(CLK_AUDIO_DL5, "audio_dl5", "a1sys_hp_sel", 10),
+	GATE_AUDIO2(CLK_AUDIO_DL6, "audio_dl6", "a1sys_hp_sel", 11),
+	GATE_AUDIO2(CLK_AUDIO_DLMCH, "audio_dlmch", "a1sys_hp_sel", 12),
+	GATE_AUDIO2(CLK_AUDIO_ARB1, "audio_arb1", "a1sys_hp_sel", 13),
+	GATE_AUDIO2(CLK_AUDIO_AWB, "audio_awb", "a1sys_hp_sel", 14),
+	GATE_AUDIO2(CLK_AUDIO_AWB2, "audio_awb2", "a1sys_hp_sel", 15),
+	GATE_AUDIO2(CLK_AUDIO_DAI, "audio_dai", "a1sys_hp_sel", 16),
+	GATE_AUDIO2(CLK_AUDIO_MOD, "audio_mod", "a1sys_hp_sel", 17),
+	/* AUDIO3 */
+	GATE_AUDIO3(CLK_AUDIO_ASRCI3, "audio_asrci3", "asm_h_sel", 2),
+	GATE_AUDIO3(CLK_AUDIO_ASRCI4, "audio_asrci4", "asm_h_sel", 3),
+	GATE_AUDIO3(CLK_AUDIO_ASRCO3, "audio_asrco3", "asm_h_sel", 6),
+	GATE_AUDIO3(CLK_AUDIO_ASRCO4, "audio_asrco4", "asm_h_sel", 7),
+	GATE_AUDIO3(CLK_AUDIO_MEM_ASRC1, "audio_mem_asrc1", "asm_h_sel", 10),
+	GATE_AUDIO3(CLK_AUDIO_MEM_ASRC2, "audio_mem_asrc2", "asm_h_sel", 11),
+	GATE_AUDIO3(CLK_AUDIO_MEM_ASRC3, "audio_mem_asrc3", "asm_h_sel", 12),
+	GATE_AUDIO3(CLK_AUDIO_MEM_ASRC4, "audio_mem_asrc4", "asm_h_sel", 13),
+	GATE_AUDIO3(CLK_AUDIO_MEM_ASRC5, "audio_mem_asrc5", "asm_h_sel", 14),
+};
+
+static int clk_mt7622_audiosys_init(struct platform_device *pdev)
+{
+	struct clk_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+	int r;
+
+	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
+
+	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
+			       clk_data);
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		dev_err(&pdev->dev,
+			"could not register clock provider: %s: %d\n",
+			pdev->name, r);
+
+	return r;
+}
+
+static const struct of_device_id of_match_clk_mt7622_aud[] = {
+	{
+		.compatible = "mediatek,mt7622-audsys",
+		.data = clk_mt7622_audiosys_init,
+	}, {
+		/* sentinel */
+	}
+};
+
+static int clk_mt7622_aud_probe(struct platform_device *pdev)
+{
+	int (*clk_init)(struct platform_device *);
+	int r;
+
+	clk_init = of_device_get_match_data(&pdev->dev);
+	if (!clk_init)
+		return -EINVAL;
+
+	r = clk_init(pdev);
+	if (r)
+		dev_err(&pdev->dev,
+			"could not register clock provider: %s: %d\n",
+			pdev->name, r);
+
+	return r;
+}
+
+static struct platform_driver clk_mt7622_aud_drv = {
+	.probe = clk_mt7622_aud_probe,
+	.driver = {
+		.name = "clk-mt7622-aud",
+		.of_match_table = of_match_clk_mt7622_aud,
+	},
+};
+
+builtin_platform_driver(clk_mt7622_aud_drv);