From: Jeonghee Kim <jhhhh.kim@samsung.com>
Date: Tue, 17 Apr 2018 07:54:49 +0000 (+0900)
Subject: media: mfc: add MMCache handling for MFC only
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a4661366e65dc6d6bbb33a68859e215aa4b025f;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

media: mfc: add MMCache handling for MFC only

Change-Id: I4c5368ad277013df30110774a4a445f25de89071
Signed-off-by: Jiho Chang <jiho04.chang@samsung.com>
Signed-off-by: Jeonghee Kim <jhhhh.kim@samsung.com>
---

diff --git a/drivers/media/platform/exynos/mfc/Makefile b/drivers/media/platform/exynos/mfc/Makefile
index 36de58256e30..428674d17dd1 100644
--- a/drivers/media/platform/exynos/mfc/Makefile
+++ b/drivers/media/platform/exynos/mfc/Makefile
@@ -5,3 +5,4 @@ s5p-mfc-y += s5p_mfc_pm.o s5p_mfc_inst.o s5p_mfc_cmd.o s5p_mfc_cal.o s5p_mfc_reg
 s5p-mfc-y += s5p_mfc_dec_ops.o s5p_mfc_enc_ops.o s5p_mfc_enc_param.o
 s5p-mfc-y += s5p_mfc_queue.o s5p_mfc_buf.o s5p_mfc_utils.o s5p_mfc_qos.o s5p_mfc_mem.o
 s5p-mfc-y += s5p_mfc_debugfs.o s5p_mfc_otf.o
+s5p-mfc-y += s5p_mfc_mmcache.o
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc.c b/drivers/media/platform/exynos/mfc/s5p_mfc.c
index 942e4f126bd1..705ac511f272 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc.c
@@ -40,6 +40,7 @@
 #include "s5p_mfc_cal.h"
 #include "s5p_mfc_perf_measure.h"
 #include "s5p_mfc_reg.h"
+#include "s5p_mfc_mmcache.h"
 
 #include "s5p_mfc_qos.h"
 #include "s5p_mfc_queue.h"
@@ -385,6 +386,10 @@ static int mfc_init_instance(struct s5p_mfc_dev *dev, struct s5p_mfc_ctx *ctx)
 		goto err_hw_init;
 	}
 
+	if (dev->has_mmcache && (dev->mmcache.is_on_status == 0))
+		s5p_mfc_mmcache_enable(dev);
+
+
 	s5p_mfc_release_hwlock_dev(dev);
 
 #ifdef NAL_Q_ENABLE
@@ -743,6 +748,13 @@ static int s5p_mfc_release(struct file *file)
 
 	s5p_mfc_qos_off(ctx);
 
+	if (dev->has_mmcache && dev->mmcache.is_on_status) {
+		s5p_mfc_invalidate_mmcache(dev);
+
+		if (dev->num_inst == 0)
+			s5p_mfc_mmcache_disable(dev);
+	}
+
 	s5p_mfc_release_codec_buffers(ctx);
 	s5p_mfc_release_instance_context(ctx);
 
@@ -992,6 +1004,7 @@ static int mfc_register_resource(struct platform_device *pdev, struct s5p_mfc_de
 	struct device_node *np = dev->device->of_node;
 	struct device_node *iommu;
 	struct device_node *hwfc;
+	struct device_node *mmcache;
 	struct resource *res;
 	int ret;
 
@@ -1038,12 +1051,24 @@ static int mfc_register_resource(struct platform_device *pdev, struct s5p_mfc_de
 		if (dev->hwfc_base == NULL) {
 			dev->has_hwfc = 0;
 			dev_err(&pdev->dev, "failed to iomap hwfc address region\n");
-			goto err_res_hwfc;
+			goto err_ioremap_hwfc;
 		} else {
 			dev->has_hwfc = 1;
 		}
 	}
 
+	mmcache = of_get_child_by_name(np, "mmcache");
+	if (mmcache) {
+		dev->mmcache.base = of_iomap(mmcache, 0);
+		if (dev->mmcache.base == NULL) {
+			dev->has_mmcache = 0;
+			dev_err(&pdev->dev, "failed to iomap mmcache address region\n");
+			goto err_ioremap_mmcache;
+		} else {
+			dev->has_mmcache = 1;
+		}
+	}
+
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res == NULL) {
 		dev_err(&pdev->dev, "failed to get irq resource\n");
@@ -1060,9 +1085,12 @@ static int mfc_register_resource(struct platform_device *pdev, struct s5p_mfc_de
 	return 0;
 
 err_res_irq:
+	if (dev->has_mmcache)
+		iounmap(dev->mmcache.base);
+err_ioremap_mmcache:
 	if (dev->has_hwfc)
 		iounmap(dev->hwfc_base);
-err_res_hwfc:
+err_ioremap_hwfc:
 	if (dev->has_2sysmmu)
 		iounmap(dev->sysmmu1_base);
 	iounmap(dev->sysmmu0_base);
@@ -1278,6 +1306,8 @@ alloc_vdev_dec:
 err_v4l2_dev:
 	mutex_destroy(&dev->mfc_mutex);
 	free_irq(dev->irq, dev);
+	if (dev->has_mmcache)
+		iounmap(dev->mmcache.base);
 	if (dev->has_hwfc)
 		iounmap(dev->hwfc_base);
 	if (dev->has_2sysmmu)
@@ -1319,6 +1349,8 @@ static int s5p_mfc_remove(struct platform_device *pdev)
 	mfc_debug(2, "Will now deinit HW\n");
 	s5p_mfc_deinit_hw(dev);
 	free_irq(dev->irq, dev);
+	if (dev->has_mmcache)
+		iounmap(dev->mmcache.base);
 	if (dev->has_hwfc)
 		iounmap(dev->hwfc_base);
 	if (dev->has_2sysmmu)
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_cmd.c b/drivers/media/platform/exynos/mfc/s5p_mfc_cmd.c
index 0d7e5c8a2a01..3d2614c8c83a 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_cmd.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_cmd.c
@@ -16,6 +16,7 @@
 
 #include "s5p_mfc_cal.h"
 #include "s5p_mfc_reg.h"
+#include "s5p_mfc_mmcache.h"
 
 #include "s5p_mfc_utils.h"
 #include "s5p_mfc_buf.h"
@@ -225,6 +226,10 @@ int s5p_mfc_cmd_dec_init_buffers(struct s5p_mfc_ctx *ctx)
 	ret = s5p_mfc_set_dec_codec_buffers(ctx);
 	if (ret) {
 		mfc_info_ctx("isn't enough codec buffer size, re-alloc!\n");
+
+		if (dev->has_mmcache && dev->mmcache.is_on_status)
+			s5p_mfc_invalidate_mmcache(dev);
+
 		s5p_mfc_release_codec_buffers(ctx);
 		ret = s5p_mfc_alloc_codec_buffers(ctx);
 		if (ret) {
@@ -275,6 +280,10 @@ int s5p_mfc_cmd_enc_init_buffers(struct s5p_mfc_ctx *ctx)
 	ret = s5p_mfc_set_enc_codec_buffers(ctx);
 	if (ret) {
 		mfc_info_ctx("isn't enough codec buffer size, re-alloc!\n");
+
+		if (dev->has_mmcache && dev->mmcache.is_on_status)
+			s5p_mfc_invalidate_mmcache(dev);
+
 		s5p_mfc_release_codec_buffers(ctx);
 		ret = s5p_mfc_alloc_codec_buffers(ctx);
 		if (ret) {
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_common.h b/drivers/media/platform/exynos/mfc/s5p_mfc_common.h
index 5d9b5c24cbb1..2d6b28fde6fe 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_common.h
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_common.h
@@ -44,6 +44,8 @@
 #define MFC_HWLOCK_TIMEOUT	5000
 /* Busy wait timeout */
 #define MFC_BW_TIMEOUT		500
+/* MMCache invalidation timeout */
+#define MMCACHE_INVAL_TIMEOUT	1000
 /* Interrupt timeout count*/
 #define MFC_INT_TIMEOUT_CNT	2
 
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_data_struct.h b/drivers/media/platform/exynos/mfc/s5p_mfc_data_struct.h
index dcc1ddd21931..2134b7fb1cf5 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_data_struct.h
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_data_struct.h
@@ -337,6 +337,8 @@ struct s5p_mfc_debugfs {
 	struct dentry *otf_dump;
 	struct dentry *perf_measure_option;
 	struct dentry *sfr_dump;
+	struct dentry *mmcache_dump;
+	struct dentry *mmcache_disable;
 	struct dentry *debug_mode;
 };
 
@@ -672,6 +674,11 @@ struct s5p_mfc_dump_ops {
 	void (*dump_and_stop_debug_mode)(struct s5p_mfc_dev *dev);
 };
 
+struct s5p_mfc_mmcache {
+	void __iomem *base;
+	int is_on_status;
+};
+
 /**
  * struct s5p_mfc_dev - The struct containing driver internal parameters.
  */
@@ -710,8 +717,9 @@ struct s5p_mfc_dev {
 	wait_queue_head_t cmd_wq;
 	struct s5p_mfc_listable_wq hwlock_wq;
 
-	bool has_hwfc;
 	bool has_2sysmmu;
+	bool has_hwfc;
+	bool has_mmcache;
 
 	struct s5p_mfc_special_buf common_ctx_buf;
 	struct s5p_mfc_special_buf drm_common_ctx_buf;
@@ -777,6 +785,8 @@ struct s5p_mfc_dev {
 	struct s5p_mfc_dump_ops *dump_ops;
 
 	struct s5p_mfc_perf perf;
+
+	struct s5p_mfc_mmcache mmcache;
 };
 
 /**
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_debug.h b/drivers/media/platform/exynos/mfc/s5p_mfc_debug.h
index 8d626590e93f..2b9f45a74388 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_debug.h
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_debug.h
@@ -25,6 +25,8 @@ extern unsigned int nal_q_disable;
 extern unsigned int nal_q_parallel_disable;
 extern unsigned int otf_dump;
 extern unsigned int sfr_dump;
+extern unsigned int mmcache_dump;
+extern unsigned int mmcache_disable;
 extern unsigned int debug_mode;
 
 #define mfc_debug(level, fmt, args...)				\
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_debugfs.c b/drivers/media/platform/exynos/mfc/s5p_mfc_debugfs.c
index 58a824fc0803..03a98b7759fd 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_debugfs.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_debugfs.c
@@ -29,6 +29,8 @@ unsigned int nal_q_parallel_disable;
 unsigned int otf_dump;
 unsigned int perf_measure_option;
 unsigned int sfr_dump;
+unsigned int mmcache_dump;
+unsigned int mmcache_disable;
 /* It will be disable after driver is stabilized */
 unsigned int debug_mode = 1;
 
@@ -50,6 +52,9 @@ static int mfc_info_show(struct seq_file *s, void *unused)
 	seq_printf(s, "[HWLOCK] bits: %#lx, dev: %#lx, owned_by_irq = %d, wl_count = %d\n",
 			dev->hwlock.bits, dev->hwlock.dev,
 			dev->hwlock.owned_by_irq, dev->hwlock.wl_count);
+	seq_printf(s, "[MMCACHE] %s(%s)\n",
+			dev->has_mmcache ? "supported" : "not supported",
+			dev->mmcache.is_on_status ? "enabled" : "disabled");
 	if (dev->nal_q_handle)
 		seq_printf(s, "[NAL-Q] state: %d\n", dev->nal_q_handle->nal_q_state);
 
@@ -151,6 +156,10 @@ void s5p_mfc_init_debugfs(struct s5p_mfc_dev *dev)
 			0644, debugfs->root, &perf_measure_option);
 	debugfs->sfr_dump = debugfs_create_u32("sfr_dump",
 			0644, debugfs->root, &sfr_dump);
+	debugfs->mmcache_dump = debugfs_create_u32("mmcache_dump",
+			0644, debugfs->root, &mmcache_dump);
+	debugfs->mmcache_disable = debugfs_create_u32("mmcache_disable",
+			0644, debugfs->root, &mmcache_disable);
 	debugfs->debug_mode = debugfs_create_u32("debug_mode",
 			0644, debugfs->root, &debug_mode);
 }
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_dec.c b/drivers/media/platform/exynos/mfc/s5p_mfc_dec.c
index bd0f354f372f..001e3b3aedfe 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_dec.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_dec.c
@@ -16,6 +16,7 @@
 #include "s5p_mfc_hwlock.h"
 #include "s5p_mfc_opr.h"
 #include "s5p_mfc_sync.h"
+#include "s5p_mfc_mmcache.h"
 
 #include "s5p_mfc_qos.h"
 #include "s5p_mfc_queue.h"
@@ -626,6 +627,10 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 		if (reqbufs->count == 0) {
 			mfc_debug(2, "Freeing buffers.\n");
 			ret = vb2_reqbufs(&ctx->vq_dst, reqbufs);
+
+			if (dev->has_mmcache && dev->mmcache.is_on_status)
+				s5p_mfc_invalidate_mmcache(dev);
+
 			s5p_mfc_release_codec_buffers(ctx);
 			ctx->capture_state = QUEUE_FREE;
 			return ret;
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_irq.c b/drivers/media/platform/exynos/mfc/s5p_mfc_irq.c
index 228679f98349..403fdba16e65 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_irq.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_irq.c
@@ -22,6 +22,7 @@
 #include "s5p_mfc_cal.h"
 #include "s5p_mfc_perf_measure.h"
 #include "s5p_mfc_reg.h"
+#include "s5p_mfc_mmcache.h"
 
 #include "s5p_mfc_qos.h"
 #include "s5p_mfc_queue.h"
@@ -746,6 +747,9 @@ static void mfc_enc_res_change(struct s5p_mfc_ctx *ctx)
 		mfc_debug(2, "Encoding Resolution Status : %d\n", reg);
 
 		if (reg == 2 || reg == 3) {
+			if (dev->has_mmcache && dev->mmcache.is_on_status)
+				s5p_mfc_invalidate_mmcache(dev);
+
 			s5p_mfc_release_codec_buffers(ctx);
 			/* for INIT_BUFFER cmd */
 			s5p_mfc_change_state(ctx, MFCINST_HEAD_PARSED);
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.c b/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.c
new file mode 100644
index 000000000000..a5a07b7888d7
--- /dev/null
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.c
@@ -0,0 +1,232 @@
+/*
+ * drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.c
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "s5p_mfc_mmcache.h"
+
+#include "s5p_mfc_reg.h"
+
+static const unsigned char mmcache_SFR_0x0010[] = {
+	0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+	0x2A, 0x00, 0x00, 0x00, 0x2A, 0x00, 0x00, 0x00, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const unsigned char mmcache_SFR_0x0040[] = {
+	0x0E, 0x00, 0x1E, 0x00, 0x0E, 0x00, 0x1E, 0x00, 0x0E, 0x00, 0x1E, 0x00, 0x0E, 0x00, 0x1E, 0x00,
+	0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00,
+	0x10, 0x00, 0x1F, 0x00, 0x10, 0x00, 0x1F, 0x00, 0x10, 0x00, 0x1F, 0x00, 0x10, 0x00, 0x1F, 0x00,
+	0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00,
+	0x0C, 0x00, 0x1F, 0x00, 0x0C, 0x00, 0x1F, 0x00, 0x0C, 0x00, 0x1F, 0x00, 0x0C, 0x00, 0x1F, 0x00,
+	0x12, 0x00, 0x3F, 0x00, 0x08, 0x00, 0x3F, 0x00, 0x0C, 0x00, 0x3D, 0x00, 0x0C, 0x00, 0x3D, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static void mmcache_print_config(struct s5p_mfc_dev *dev)
+{
+	void __iomem *addr;
+	unsigned int size;
+
+	mfc_debug_enter();
+
+	if (!mmcache_dump)
+		return;
+
+	size = sizeof(mmcache_SFR_0x0010);
+	addr = dev->mmcache.base + MMCACHE_WAY0_CTRL;
+
+	print_hex_dump(KERN_ERR, "[MMCACHE] Config:", DUMP_PREFIX_ADDRESS, 32, 4, addr, size, false);
+
+	size = sizeof(mmcache_SFR_0x0040);
+	addr = dev->mmcache.base + MMCACHE_MASTER_GRP0_RPATH0;
+
+	print_hex_dump(KERN_ERR, "[MMCACHE] Config:", DUMP_PREFIX_ADDRESS, 32, 4, addr, size, false);
+
+	mfc_debug_leave();
+}
+
+static void mmcache_set_config(struct s5p_mfc_dev *dev)
+{
+	unsigned int data, i, size;
+	const unsigned int *sfr_dump;
+
+	mfc_debug_enter();
+
+	size = sizeof(mmcache_SFR_0x0010);
+	sfr_dump = (const unsigned int *)mmcache_SFR_0x0010;
+
+	for (i = 0; i < size; i += 4) {
+		data = sfr_dump[i / 4];
+		MMCACHE_WRITEL(data, MMCACHE_WAY0_CTRL + i);
+	}
+
+	size = sizeof(mmcache_SFR_0x0040);
+	sfr_dump = (const unsigned int *)mmcache_SFR_0x0040;
+
+	for (i = 0; i < size; i += 4) {
+		data = sfr_dump[i / 4];
+		MMCACHE_WRITEL(data, MMCACHE_MASTER_GRP0_RPATH0 + i);
+	}
+
+	mfc_debug(2, "[MMCACHE] mmcache config setting is done\n");
+
+	mfc_debug_leave();
+}
+
+static void mmcache_reset_config(struct s5p_mfc_dev *dev)
+{
+	void __iomem *addr;
+	unsigned int data;
+
+	mfc_debug_enter();
+
+	addr = dev->mmcache.base + MMCACHE_MASTER_GRP_CTRL2;
+	data = 0;
+
+	mfc_debug(2, "[MMCACHE] before write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_MASTER_GRP_CTRL2));
+
+	MMCACHE_WRITEL(data, MMCACHE_MASTER_GRP_CTRL2);
+
+	mfc_debug(2, "[MMCACHE] after write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_MASTER_GRP_CTRL2));
+
+	mfc_debug_leave();
+}
+
+static void mmcache_update_master_grp(struct s5p_mfc_dev *dev)
+{
+	void __iomem *addr;
+	unsigned int data;
+
+	mfc_debug_enter();
+
+	addr = dev->mmcache.base + MMCACHE_GLOBAL_CTRL;
+	data = MMCACHE_GLOBAL_CTRL_VALUE;
+
+	mfc_debug(2, "[MMCACHE] before write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_GLOBAL_CTRL));
+
+	MMCACHE_WRITEL(data, MMCACHE_GLOBAL_CTRL);
+
+	mfc_debug(2, "[MMCACHE] after write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_GLOBAL_CTRL));
+
+	mfc_debug_leave();
+}
+
+static void mmcache_enable_clock_gating(struct s5p_mfc_dev *dev)
+{
+	void __iomem *addr;
+	unsigned int data;
+
+	mfc_debug_enter();
+
+	addr = dev->mmcache.base + MMCACHE_CG_CONTROL;
+	data = MMCACHE_CG_CONTROL_VALUE;
+
+	mfc_debug(2, "[MMCACHE] before write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_CG_CONTROL));
+
+	MMCACHE_WRITEL(data, MMCACHE_CG_CONTROL);
+
+	mfc_debug(2, "[MMCACHE] after write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_CG_CONTROL));
+
+	mfc_debug_leave();
+}
+
+void s5p_mfc_mmcache_enable(struct s5p_mfc_dev *dev)
+{
+	mfc_debug_enter();
+
+	if (mmcache_disable)
+		return;
+
+	mmcache_set_config(dev);
+	mmcache_print_config(dev);
+	mmcache_update_master_grp(dev);
+	mmcache_enable_clock_gating(dev);
+
+	dev->mmcache.is_on_status = 1;
+	mfc_info_dev("[MMCACHE] enabled\n");
+	MFC_TRACE_DEV("[MMCACHE] enabled\n");
+
+	mfc_debug_leave();
+}
+
+void s5p_mfc_mmcache_disable(struct s5p_mfc_dev *dev)
+{
+	mfc_debug_enter();
+
+	mmcache_reset_config(dev);
+	mmcache_update_master_grp(dev);
+
+	dev->mmcache.is_on_status = 0;
+	mfc_info_dev("[MMCACHE] disabled\n");
+	MFC_TRACE_DEV("[MMCACHE] disabled\n");
+
+	mfc_debug_leave();
+}
+
+void s5p_mfc_invalidate_mmcache(struct s5p_mfc_dev *dev)
+{
+	void __iomem *addr;
+	unsigned int data;
+	unsigned long timeout;
+
+	mfc_debug_enter();
+
+	addr = dev->mmcache.base + MMCACHE_INVALIDATE;
+	data = MMCACHE_INVALIDATE_VALUE;
+
+	mfc_debug(2, "[MMCACHE] before write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_INVALIDATE));
+
+	MMCACHE_WRITEL(data, MMCACHE_INVALIDATE);
+
+	mfc_debug(2, "[MMCACHE] after write 0x%X: (0x%08llX) 0x%X\n",
+			data, (unsigned long long)(addr),
+			MMCACHE_READL(MMCACHE_INVALIDATE));
+
+	addr = dev->mmcache.base + MMCACHE_INVALIDATE_STATUS;
+
+	timeout = jiffies + msecs_to_jiffies(MMCACHE_INVAL_TIMEOUT);
+	while (1) {
+		if (MMCACHE_READL(MMCACHE_INVALIDATE_STATUS) == 0) {
+			mfc_debug(2, "[MMCACHE] invalidate done: (0x%08llX) 0x%X\n",
+					(unsigned long long)(addr), __raw_readl(addr));
+			break;
+		}
+		if (time_after(jiffies, timeout)) {
+			mfc_err_dev("[MMCACHE] Timeout while invalidation.\n");
+			call_dop(dev, dump_and_stop_debug_mode, dev);
+			break;
+		}
+	}
+
+	mfc_debug(2, "[MMCACHE] invalidated\n");
+	MFC_TRACE_DEV("[MMCACHE] invalidated\n");
+
+	mfc_debug_leave();
+}
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.h b/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.h
new file mode 100644
index 000000000000..f4cfa4d49928
--- /dev/null
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.h
@@ -0,0 +1,39 @@
+/*
+ * drivers/media/platform/exynos/mfc/s5p_mfc_mmcache.h
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __S5P_MFC_MMCACHE_H
+#define __S5P_MFC_MMCACHE_H __FILE__
+
+#include "s5p_mfc_common.h"
+
+#define MMCACHE_GLOBAL_CTRL		0x0000
+#define MMCACHE_INVALIDATE_STATUS	0x0008
+#define MMCACHE_WAY0_CTRL		0x0010
+#define MMCACHE_MASTER_GRP_CTRL2	0x0028
+#define MMCACHE_MASTER_GRP0_RPATH0	0x0040
+#define MMCACHE_CG_CONTROL		0x0400
+#define MMCACHE_INVALIDATE		0x0114
+
+#define MMCACHE_GLOBAL_CTRL_VALUE	0x2
+#define MMCACHE_CG_CONTROL_VALUE	0x7FF
+#define MMCACHE_INVALIDATE_VALUE	0x41
+
+/* Need HW lock to call this function */
+
+void s5p_mfc_mmcache_enable(struct s5p_mfc_dev *dev);
+void s5p_mfc_mmcache_disable(struct s5p_mfc_dev *dev);
+
+
+/* Need HW lock to call this function */
+void s5p_mfc_invalidate_mmcache(struct s5p_mfc_dev *dev);
+
+#endif /* __S5P_MFC_MMCACHE_H */
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_reg.c b/drivers/media/platform/exynos/mfc/s5p_mfc_reg.c
index e8c77f03de7c..aee8f0ebad27 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_reg.c
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_reg.c
@@ -78,7 +78,7 @@ void s5p_mfc_otf_set_hwfc_index(struct s5p_mfc_ctx *ctx, int job_id)
 	struct s5p_mfc_dev *dev = ctx->dev;
 
 	mfc_debug(2, "OTF: set hwfc index, %d\n", job_id);
-	MFC_WRITEL_HWFC(job_id, HWFC_ENCODING_IDX);
+	HWFC_WRITEL(job_id, HWFC_ENCODING_IDX);
 }
 
 /* Set decoding frame buffer */
diff --git a/drivers/media/platform/exynos/mfc/s5p_mfc_reg.h b/drivers/media/platform/exynos/mfc/s5p_mfc_reg.h
index d8700bb91a80..bc4b11544275 100644
--- a/drivers/media/platform/exynos/mfc/s5p_mfc_reg.h
+++ b/drivers/media/platform/exynos/mfc/s5p_mfc_reg.h
@@ -23,7 +23,10 @@
 #define MFC_MMU0_READL(offset)		readl(dev->sysmmu0_base + (offset))
 #define MFC_MMU1_READL(offset)		readl(dev->sysmmu1_base + (offset))
 
-#define MFC_WRITEL_HWFC(data, offset)	writel((data), dev->hwfc_base + (offset))
+#define HWFC_WRITEL(data, offset)	writel((data), dev->hwfc_base + (offset))
+
+#define MMCACHE_READL(offset)		readl(dev->mmcache.base + (offset))
+#define MMCACHE_WRITEL(data, offset)	writel((data), dev->mmcache.base + (offset))
 
 /* version */
 #define s5p_mfc_get_fimv_info()		((MFC_READL(S5P_FIMV_FW_VERSION)		\