From c3b41da9dfc6ab2cc9bb41181b38eef9818a72a3 Mon Sep 17 00:00:00 2001
From: "yanjie.jiang" <yanjie.jiang@mediatek.com>
Date: Tue, 16 Apr 2019 16:48:00 +0800
Subject: [PATCH 3/3] ccci: add md_off flow

Add release MD source flow on chromeos-4.19

Change-Id: Ia4d4f647adf97b3a960b9352609c3789ca49fb42
Signed-off-by: yanjie.jiang@mediatek.corp-partner.google.com
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |   4 +
 drivers/misc/Kconfig                          |   0
 drivers/misc/Makefile                         |   0
 drivers/soc/mediatek/Kconfig                  |   2 +
 drivers/soc/mediatek/Makefile                 |   1 +
 drivers/soc/mediatek/mtk-ccci/Kconfig         |   6 +
 drivers/soc/mediatek/mtk-ccci/Makefile        |  15 +++
 drivers/soc/mediatek/mtk-ccci/md_off/Makefile |  25 +++++
 .../mediatek/mtk-ccci/md_off/md_off-mt8183.c  | 105 ++++++++++++++++++
 .../mediatek/mtk-ccci/md_off/md_off-mt8183.h  |  14 +++
 10 files changed, 172 insertions(+)
 mode change 100644 => 100755 arch/arm64/boot/dts/mediatek/mt8183.dtsi
 mode change 100644 => 100755 drivers/misc/Kconfig
 mode change 100644 => 100755 drivers/misc/Makefile
 mode change 100644 => 100755 drivers/soc/mediatek/Kconfig
 mode change 100644 => 100755 drivers/soc/mediatek/Makefile
 create mode 100755 drivers/soc/mediatek/mtk-ccci/Kconfig
 create mode 100755 drivers/soc/mediatek/mtk-ccci/Makefile
 create mode 100755 drivers/soc/mediatek/mtk-ccci/md_off/Makefile
 create mode 100755 drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.c
 create mode 100755 drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.h

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
old mode 100644
new mode 100755
index 93b78344925d..111ecd4e3bc3
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -758,6 +758,10 @@
 			status = "disabled";
 		};
 
+		ccci_md_off@0 {
+			compatible = "mediatek,mt8183-ccci_md_off";
+		};
+
 		i2c6: i2c@11005000 {
 			compatible = "mediatek,mt8183-i2c";
 			reg = <0 0x11005000 0 0x1000>,
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
old mode 100644
new mode 100755
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
old mode 100644
new mode 100755
diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
old mode 100644
new mode 100755
index 17bd7590464f..43f9a28e7443
--- a/drivers/soc/mediatek/Kconfig
+++ b/drivers/soc/mediatek/Kconfig
@@ -43,4 +43,6 @@ config MTK_SCPSYS
 	  Say yes here to add support for the MediaTek SCPSYS power domain
 	  driver.
 
+source "drivers/soc/mediatek/mtk-ccci/Kconfig"
+
 endmenu
diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile
old mode 100644
new mode 100755
index b9dbad6b12f9..b8e52c3d30e4
--- a/drivers/soc/mediatek/Makefile
+++ b/drivers/soc/mediatek/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o
 obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o mtk-scpsys-ext.o
 obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o
 obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
+obj-y				+= mtk-ccci/
diff --git a/drivers/soc/mediatek/mtk-ccci/Kconfig b/drivers/soc/mediatek/mtk-ccci/Kconfig
new file mode 100755
index 000000000000..4309fb392a7e
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-ccci/Kconfig
@@ -0,0 +1,6 @@
+menuconfig MTK_CCCI_DEVICES
+	bool "CCCI Devices"
+	default y
+	help
+	  Say Y here to enable CCCI basic support.
+	  If you say N, all CCCI related code (including dummy API) will be disable.
\ No newline at end of file
diff --git a/drivers/soc/mediatek/mtk-ccci/Makefile b/drivers/soc/mediatek/mtk-ccci/Makefile
new file mode 100755
index 000000000000..e4c7d8287949
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-ccci/Makefile
@@ -0,0 +1,15 @@
+#
+# Copyright (C) 2015 MediaTek Inc.
+#
+# 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.
+#
+
+obj-y += md_off/
+
diff --git a/drivers/soc/mediatek/mtk-ccci/md_off/Makefile b/drivers/soc/mediatek/mtk-ccci/md_off/Makefile
new file mode 100755
index 000000000000..1e1e3ce39b4e
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-ccci/md_off/Makefile
@@ -0,0 +1,25 @@
+#
+# Copyright (C) 2015 MediaTek Inc.
+#
+# 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.
+#
+
+obj-y += md_off-mt8183.o
+
+#ifeq ($(CONFIG_MTK_CCCI), y)
+
+# always build-in parts
+#obj-y := ccci_md_off.o
+#ccflags-y += -I$(srctree)/
+#ccflags-y += -I$(srctree)/drivers\misc\mtk-ccci/md_off/
+
+#ccci_md_off-$(CONFIG_MTK_CCCI_MT8183) := md_off-mt8183.o
+
+#endif
diff --git a/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.c b/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.c
new file mode 100755
index 000000000000..6cf1880c7a76
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2015 MediaTek Inc.
+ *
+ * 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/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "md_off-mt8183.h"
+
+#define INFRA_AO_MD_SRCCLKENA		(0x0F0C)
+#define REG_MD_CLK_SETTING		(0x0000)
+
+#define STA_POWER_DOWN  0
+#define STA_POWER_ON    1
+static void internal_md1_power_down(void)
+{
+	struct device_node *node;
+	void __iomem *infra_ao_base, *ap_top_ck_gen;
+	unsigned int reg_value;
+
+	node = of_find_compatible_node(NULL, NULL, "mediatek,mt8183-infracfg");
+	infra_ao_base = of_iomap(node, 0);
+	node = of_find_compatible_node(NULL, NULL, "mediatek,mt8183-topckgen");
+	ap_top_ck_gen = of_iomap(node, 0);
+	/* 0. power on md */
+	//spm_mtcmos_ctrl_md1(STA_POWER_DOWN);
+
+	/* 1. md clock setting: gating */
+	reg_value = readl(ap_top_ck_gen);
+	reg_value |= ((1<<8)|(1<<9));
+	writel(reg_value, ap_top_ck_gen);
+
+	/* 2. mixedsys topsm init, for release srcclkena in kernel */
+	reg_value = readl(infra_ao_base + INFRA_AO_MD_SRCCLKENA);
+	reg_value &= ~0xFF;
+	writel(reg_value, (infra_ao_base + INFRA_AO_MD_SRCCLKENA));
+
+	pr_notice("[ccci-off]src clk ena = 0x%X\n",
+		readl(infra_ao_base + INFRA_AO_MD_SRCCLKENA));
+}
+
+void md_power_down(void)
+{
+	//unsigned int val;
+
+	//val = get_devinfo_with_index(4);
+	//if ((val & (0x1 << 0)) == 0)
+		internal_md1_power_down();
+	//else
+	//	pr_debug("[ccci-off]md1 effused,no need power off\n");
+}
+
+static int ccci_off_probe(struct platform_device *pdev)
+{
+	md_power_down();
+
+	return 0;
+}
+
+static int ccci_off_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static const struct of_device_id ccci_off_of_ids[] = {
+	{.compatible = "mediatek,mt8183-ccci_md_off",},
+	{}
+};
+
+static struct platform_driver ccci_off_dev_drv = {
+	.probe = ccci_off_probe,
+	.remove = ccci_off_remove,
+	.driver = {
+		   .name = "ccci_md_off",
+		   .owner = THIS_MODULE,
+		   .of_match_table = ccci_off_of_ids,
+		   },
+};
+
+static int __init ccci_md_off_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&ccci_off_dev_drv);
+	if (ret)
+		pr_debug("[ccci-md-off] platform driver registered failed(%d)\n", ret);
+	else
+		pr_debug("[ccci-md-off]platform driver registered OK\n");
+
+	return 0;
+}
+
+module_init(ccci_md_off_init);
diff --git a/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.h b/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.h
new file mode 100755
index 000000000000..b94f93f4558f
--- /dev/null
+++ b/drivers/soc/mediatek/mtk-ccci/md_off/md_off-mt8183.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2015 MediaTek Inc.
+ *
+ * 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.
+ */
+
+
-- 
2.20.1