[ARM] tegra: add API to set memory client priority

Change-Id: Id9b157004f7364fb1f7aaffa925b710dcfb90e86
Signed-off-by: Erik Gilling <konkers@android.com>

Rebase-Id: R788e2f689e5ed38698e31993fb88de59f19eb7f9

3 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 9e78ff4af356..a6c138eab91e 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_PM_SLEEP)			+= pm-irq.o
 obj-$(CONFIG_PM_SLEEP)			+= sleep.o
 obj-y					+= fuse.o
 obj-y					+= tegra_i2s_audio.o
+obj-y					+= mc.o
 obj-$(CONFIG_USB_SUPPORT)               += usb_phy.o
 obj-$(CONFIG_FIQ)                       += fiq.o
 obj-$(CONFIG_TEGRA_PWM)                 += pwm.o
diff --git a/arch/arm/mach-tegra/include/mach/mc.h b/arch/arm/mach-tegra/include/mach/mc.h
new file mode 100644
index 000000000000..167081067f9e
--- /dev/null
+++ b/arch/arm/mach-tegra/include/mach/mc.h
@@ -0,0 +1,100 @@
+/*
+ * arch/arm/mach-tegra/include/mach/mc.h
+ *
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * Author:
+ *	Erik Gilling <konkers@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_TEGRA_MC_H
+#define __MACH_TEGRA_MC_H
+
+#define TEGRA_MC_FPRI_CTRL_AVPC		0x17c
+#define TEGRA_MC_FPRI_CTRL_DC		0x180
+#define TEGRA_MC_FPRI_CTRL_DCB		0x184
+#define TEGRA_MC_FPRI_CTRL_EPP		0x188
+#define TEGRA_MC_FPRI_CTRL_G2		0x18c
+#define TEGRA_MC_FPRI_CTRL_HC		0x190
+#define TEGRA_MC_FPRI_CTRL_ISP		0x194
+#define TEGRA_MC_FPRI_CTRL_MPCORE	0x198
+#define TEGRA_MC_FPRI_CTRL_MPEA		0x19c
+#define TEGRA_MC_FPRI_CTRL_MPEB		0x1a0
+#define TEGRA_MC_FPRI_CTRL_MPEC		0x1a4
+#define TEGRA_MC_FPRI_CTRL_NV		0x1a8
+#define TEGRA_MC_FPRI_CTRL_PPCS		0x1ac
+#define TEGRA_MC_FPRI_CTRL_VDE		0x1b0
+#define TEGRA_MC_FPRI_CTRL_VI		0x1b4
+
+#define TEGRA_MC_CLIENT_AVPCARM7R	((TEGRA_MC_FPRI_CTRL_AVPC << 8) | 0)
+#define TEGRA_MC_CLIENT_AVPCARM7W	((TEGRA_MC_FPRI_CTRL_AVPC << 8) | 2)
+#define TEGRA_MC_CLIENT_DISPLAY0A	((TEGRA_MC_FPRI_CTRL_DC << 8) | 0)
+#define TEGRA_MC_CLIENT_DISPLAY0B	((TEGRA_MC_FPRI_CTRL_DC << 8) | 2)
+#define TEGRA_MC_CLIENT_DISPLAY0C	((TEGRA_MC_FPRI_CTRL_DC << 8) | 4)
+#define TEGRA_MC_CLIENT_DISPLAY1B	((TEGRA_MC_FPRI_CTRL_DC << 8) | 6)
+#define TEGRA_MC_CLIENT_DISPLAYHC	((TEGRA_MC_FPRI_CTRL_DC << 8) | 8)
+#define TEGRA_MC_CLIENT_DISPLAY0AB	((TEGRA_MC_FPRI_CTRL_DCB << 8) | 0)
+#define TEGRA_MC_CLIENT_DISPLAY0BB	((TEGRA_MC_FPRI_CTRL_DCB << 8) | 2)
+#define TEGRA_MC_CLIENT_DISPLAY0CB	((TEGRA_MC_FPRI_CTRL_DCB << 8) | 4)
+#define TEGRA_MC_CLIENT_DISPLAY1BB	((TEGRA_MC_FPRI_CTRL_DCB << 8) | 6)
+#define TEGRA_MC_CLIENT_DISPLAYHCB	((TEGRA_MC_FPRI_CTRL_DCB << 8) | 8)
+#define TEGRA_MC_CLIENT_EPPUP		((TEGRA_MC_FPRI_CTRL_EPP << 8) | 0)
+#define TEGRA_MC_CLIENT_EPPU		((TEGRA_MC_FPRI_CTRL_EPP << 8) | 2)
+#define TEGRA_MC_CLIENT_EPPV		((TEGRA_MC_FPRI_CTRL_EPP << 8) | 4)
+#define TEGRA_MC_CLIENT_EPPY		((TEGRA_MC_FPRI_CTRL_EPP << 8) | 6)
+#define TEGRA_MC_CLIENT_G2PR		((TEGRA_MC_FPRI_CTRL_G2 << 8) | 0)
+#define TEGRA_MC_CLIENT_G2SR		((TEGRA_MC_FPRI_CTRL_G2 << 8) | 2)
+#define TEGRA_MC_CLIENT_G2DR		((TEGRA_MC_FPRI_CTRL_G2 << 8) | 4)
+#define TEGRA_MC_CLIENT_G2DW		((TEGRA_MC_FPRI_CTRL_G2 << 8) | 6)
+#define TEGRA_MC_CLIENT_HOST1XDMAR	((TEGRA_MC_FPRI_CTRL_HC << 8) | 0)
+#define TEGRA_MC_CLIENT_HOST1XR		((TEGRA_MC_FPRI_CTRL_HC << 8) | 2)
+#define TEGRA_MC_CLIENT_HOST1XW		((TEGRA_MC_FPRI_CTRL_HC << 8) | 4)
+#define TEGRA_MC_CLIENT_ISPW		((TEGRA_MC_FPRI_CTRL_ISP << 8) | 0)
+#define TEGRA_MC_CLIENT_MPCORER		((TEGRA_MC_FPRI_CTRL_MPCORE << 8) | 0)
+#define TEGRA_MC_CLIENT_MPCOREW		((TEGRA_MC_FPRI_CTRL_MPCORE << 8) | 2)
+#define TEGRA_MC_CLIENT_MPEAMEMRD	((TEGRA_MC_FPRI_CTRL_MPEA << 8) | 0)
+#define TEGRA_MC_CLIENT_MPEUNIFBR	((TEGRA_MC_FPRI_CTRL_MPEB << 8) | 0)
+#define TEGRA_MC_CLIENT_MPE_IPRED	((TEGRA_MC_FPRI_CTRL_MPEB << 8) | 2)
+#define TEGRA_MC_CLIENT_MPEUNIFBW	((TEGRA_MC_FPRI_CTRL_MPEB << 8) | 4)
+#define TEGRA_MC_CLIENT_MPECSRD		((TEGRA_MC_FPRI_CTRL_MPEC << 8) | 0)
+#define TEGRA_MC_CLIENT_MPECSWR		((TEGRA_MC_FPRI_CTRL_MPEC << 8) | 2)
+#define TEGRA_MC_CLIENT_FDCDRD		((TEGRA_MC_FPRI_CTRL_NV << 8) | 0)
+#define TEGRA_MC_CLIENT_IDXSRD		((TEGRA_MC_FPRI_CTRL_NV << 8) | 2)
+#define TEGRA_MC_CLIENT_TEXSRD		((TEGRA_MC_FPRI_CTRL_NV << 8) | 4)
+#define TEGRA_MC_CLIENT_FDCDWR		((TEGRA_MC_FPRI_CTRL_NV << 8) | 6)
+#define TEGRA_MC_CLIENT_PPCSAHBDMAR	((TEGRA_MC_FPRI_CTRL_PPCS << 8) | 0)
+#define TEGRA_MC_CLIENT_PPCSAHBSLVR     ((TEGRA_MC_FPRI_CTRL_PPCS << 8) | 2)
+#define TEGRA_MC_CLIENT_PPCSAHBDMAW     ((TEGRA_MC_FPRI_CTRL_PPCS << 8) | 4)
+#define TEGRA_MC_CLIENT_PPCSAHBSLVW     ((TEGRA_MC_FPRI_CTRL_PPCS << 8) | 6)
+#define TEGRA_MC_CLIENT_VDEBSEVR	((TEGRA_MC_FPRI_CTRL_VDE << 8) | 0)
+#define TEGRA_MC_CLIENT_VDEMBER		((TEGRA_MC_FPRI_CTRL_VDE << 8) | 2)
+#define TEGRA_MC_CLIENT_VDEMCER		((TEGRA_MC_FPRI_CTRL_VDE << 8) | 4)
+#define TEGRA_MC_CLIENT_VDETPER		((TEGRA_MC_FPRI_CTRL_VDE << 8) | 6)
+#define TEGRA_MC_CLIENT_VDEBSEVW	((TEGRA_MC_FPRI_CTRL_VDE << 8) | 8)
+#define TEGRA_MC_CLIENT_VDEMBEW		((TEGRA_MC_FPRI_CTRL_VDE << 8) | 10)
+#define TEGRA_MC_CLIENT_VDETPMW		((TEGRA_MC_FPRI_CTRL_VDE << 8) | 12)
+#define TEGRA_MC_CLIENT_VIRUV		((TEGRA_MC_FPRI_CTRL_VI << 8) | 0)
+#define TEGRA_MC_CLIENT_VIWSB		((TEGRA_MC_FPRI_CTRL_VI << 8) | 2)
+#define TEGRA_MC_CLIENT_VIWU		((TEGRA_MC_FPRI_CTRL_VI << 8) | 4)
+#define TEGRA_MC_CLIENT_VIWV		((TEGRA_MC_FPRI_CTRL_VI << 8) | 6)
+#define TEGRA_MC_CLIENT_VIWY		((TEGRA_MC_FPRI_CTRL_VI << 8) | 8)
+
+#define TEGRA_MC_PRIO_LOWEST		0
+#define TEGRA_MC_PRIO_LOW		1
+#define TEGRA_MC_PRIO_MED		2
+#define TEGRA_MC_PRIO_HIGH		3
+#define TEGRA_MC_PRIO_MASK		3
+
+void tegra_mc_set_priority(unsigned long client, unsigned long prio);
+
+#endif
diff --git a/arch/arm/mach-tegra/mc.c b/arch/arm/mach-tegra/mc.c
new file mode 100644
index 000000000000..513ac3f5cf4d
--- /dev/null
+++ b/arch/arm/mach-tegra/mc.c
@@ -0,0 +1,42 @@
+/*
+ * arch/arm/mach-tegra/mc.c
+ *
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * Author:
+ *	Erik Gilling <konkers@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/io.h>
+#include <linux/spinlock.h>
+
+#include <mach/iomap.h>
+#include <mach/mc.h>
+
+static DEFINE_SPINLOCK(tegra_mc_lock);
+
+void tegra_mc_set_priority(unsigned long client, unsigned long prio)
+{
+	unsigned long mc_base = IO_TO_VIRT(TEGRA_MC_BASE);
+	unsigned long reg = client >> 8;
+	int field = client & 0xff;
+	unsigned long val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tegra_mc_lock, flags);
+	val = readl(mc_base + reg);
+	val &= ~(TEGRA_MC_PRIO_MASK << field);
+	val |= prio << field;
+	writel(val, mc_base + reg);
+	spin_unlock_irqrestore(&tegra_mc_lock, flags);
+}