File 0092-Changes-according-to-TI-for-SGX-support.patch of Package kernel-adaptation-bbb-v3.12

From 3f7345f4c23861f99d8f85b64bcde0cf0b31e2ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexander=20R=C3=B6ssler?= <mail.aroessler@gmail.com>
Date: Fri, 1 Nov 2013 15:35:26 +0100
Subject: [PATCH 92/96] Changes according to TI for SGX support

---
 arch/arm/mach-omap2/Makefile        |  2 +-
 arch/arm/mach-omap2/board-generic.c |  4 ++++
 arch/arm/mach-omap2/common.h        |  1 +
 arch/arm/mach-omap2/gpu.c           | 47 +++++++++++++++++++++++++++++++++++++
 4 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/mach-omap2/gpu.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 0afee42..42c1192 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -8,7 +8,7 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
 # Common support
 obj-y := id.o io.o control.o mux.o devices.o fb.o serial.o gpmc.o timer.o pm.o \
 	 common.o gpio.o dma.o wd_timer.o display.o i2c.o hdq1w.o omap_hwmod.o \
-	 omap_device.o sram.o
+	 omap_device.o sram.o gpu.o
 
 omap-2-3-common				= irq.o
 hwmod-common				= omap_hwmod.o omap_hwmod_reset.o \
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index c0b0848..33d0136 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -22,6 +22,7 @@
 #include "common.h"
 #include "common-board-devices.h"
 #include "dss-common.h"
+#include "soc.h"
 
 #if !(defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3))
 #define intc_of_init	NULL
@@ -70,6 +71,9 @@ static void __init omap_generic_init(void)
 		omap_4430sdp_display_init_of();
 	else if (of_machine_is_compatible("ti,omap5-uevm"))
 		legacy_init_ehci_clk("auxclk1_ck");
+
+	if (omap3_has_sgx())
+		omap_sgx_init_of();
 }
 
 #ifdef CONFIG_SOC_OMAP2420
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 352fa9d..a41653f 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -301,6 +301,7 @@ extern void omap_reserve(void);
 
 struct omap_hwmod;
 extern int omap_dss_reset(struct omap_hwmod *);
+void __init omap_sgx_init_of(void);
 
 /* SoC specific clock initializer */
 extern int (*omap_clk_init)(void);
diff --git a/arch/arm/mach-omap2/gpu.c b/arch/arm/mach-omap2/gpu.c
new file mode 100644
index 0000000..eebb1bd
--- /dev/null
+++ b/arch/arm/mach-omap2/gpu.c
@@ -0,0 +1,47 @@
+/*
+ * Deassert reset for AM33xx graphics device(SGX) hwmod
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ * Prathap MS <msprathap@ti.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#include <linux/of_platform.h>
+#include "omap_device.h"
+
+void __init omap_sgx_init_of(void)
+{
+       struct device_node *node;
+       struct platform_device *pdev;
+       int ret = 0;
+       node = of_find_compatible_node(NULL, NULL, "ti,sgx");
+       if (!node)
+               return;
+       pdev = of_find_device_by_node(node);
+       if (!pdev) {
+               pr_warn("of_find_device_by_node() failed for sgx\n");
+               return;
+       }
+       ret = omap_device_deassert_hardreset(pdev, "gfx");
+       if (ret != 0)
+               pr_warn("omap_device_deassert_hardreset() failed for sgx(gfx hwmod)\n");
+
+       node = of_find_compatible_node(NULL, NULL, "ti,am335x-timer");
+       if (!node)
+               return;
+       pdev = of_find_device_by_node(node);
+       if (!pdev) {
+               pr_warn("of_find_device_by_node() failed for sgx\n");
+               return;
+       }
+       ret = omap_device_deassert_hardreset(pdev, "timer7");
+       if (ret != 0)
+               pr_warn("omap_device_deassert_hardreset() failed for sgx(gfx hwmod)\n");
+}
-- 
1.9.1