linux-kernel - [PATCH v4 30/34] clk: mediatek: Add MT8192 msdc clock support

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Message-ID: <1603370247-30437-31-git-send-email-weiyi.lu@mediatek.com>
Date:   Thu, 22 Oct 2020 20:37:23 +0800
From:   Weiyi Lu <weiyi.lu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
        <srv_heupstream@...iatek.com>, Weiyi Lu <weiyi.lu@...iatek.com>
Subject: [PATCH v4 30/34] clk: mediatek: Add MT8192 msdc clock support

Add MT8192 msdc clock provider

Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
---
 drivers/clk/mediatek/Kconfig           |  6 ++++
 drivers/clk/mediatek/Makefile          |  1 +
 drivers/clk/mediatek/clk-mt8192-msdc.c | 57 ++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 drivers/clk/mediatek/clk-mt8192-msdc.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index 01a76ae..4b8cae6 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -557,6 +557,12 @@ config COMMON_CLK_MT8192_MSDC_TOP
 	help
 	  This driver supports MediaTek MT8192 msdc_top clocks.
 
+config COMMON_CLK_MT8192_MSDC
+	bool "Clock driver for MediaTek MT8192 msdc"
+	depends on COMMON_CLK_MT8192
+	help
+	  This driver supports MediaTek MT8192 msdc clocks.
+
 config COMMON_CLK_MT8516
 	bool "Clock driver for MediaTek MT8516"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 4a30269..31e134b 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -80,5 +80,6 @@ obj-$(CONFIG_COMMON_CLK_MT8192_MDPSYS) += clk-mt8192-mdp.o
 obj-$(CONFIG_COMMON_CLK_MT8192_MFGCFG) += clk-mt8192-mfg.o
 obj-$(CONFIG_COMMON_CLK_MT8192_MMSYS) += clk-mt8192-mm.o
 obj-$(CONFIG_COMMON_CLK_MT8192_MSDC_TOP) += clk-mt8192-msdc_top.o
+obj-$(CONFIG_COMMON_CLK_MT8192_MSDC) += clk-mt8192-msdc.o
 obj-$(CONFIG_COMMON_CLK_MT8516) += clk-mt8516.o
 obj-$(CONFIG_COMMON_CLK_MT8516_AUDSYS) += clk-mt8516-aud.o
diff --git a/drivers/clk/mediatek/clk-mt8192-msdc.c b/drivers/clk/mediatek/clk-mt8192-msdc.c
new file mode 100644
index 0000000..9d2b168
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8192-msdc.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2020 MediaTek Inc.
+// Author: Weiyi Lu <weiyi.lu@...iatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt8192-clk.h>
+
+static const struct mtk_gate_regs msdc_cg_regs = {
+	.set_ofs = 0xb4,
+	.clr_ofs = 0xb4,
+	.sta_ofs = 0xb4,
+};
+
+#define GATE_MSDC(_id, _name, _parent, _shift)	\
+	GATE_MTK(_id, _name, _parent, &msdc_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
+
+static const struct mtk_gate msdc_clks[] = {
+	GATE_MSDC(CLK_MSDC_AXI_WRAP, "msdc_axi_wrap", "axi_sel", 22),
+};
+
+static int clk_mt8192_msdc_probe(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_MSDC_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_gates(node, msdc_clks, ARRAY_SIZE(msdc_clks), clk_data);
+	if (r)
+		return r;
+
+	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+}
+
+static const struct of_device_id of_match_clk_mt8192_msdc[] = {
+	{ .compatible = "mediatek,mt8192-msdc", },
+	{}
+};
+
+static struct platform_driver clk_mt8192_msdc_drv = {
+	.probe = clk_mt8192_msdc_probe,
+	.driver = {
+		.name = "clk-mt8192-msdc",
+		.of_match_table = of_match_clk_mt8192_msdc,
+	},
+};
+
+builtin_platform_driver(clk_mt8192_msdc_drv);
-- 
1.8.1.1.dirty