ENGR00152557 Add fuse bit check for GPU/VPU

Add fuse bit check for GPU/VPU.
Some boards may not have GPU/VPU. This can be controlled by fuse
bit.
Signed-off-by: Terry Lv <r65388@freescale.com>

11 files changed, 136 insertions, 15 deletions

diff --git a/arch/arm/mach-mx5/Makefile b/arch/arm/mach-mx5/Makefile
index f634a9361564..e5c7dce8b4f3 100644
--- a/arch/arm/mach-mx5/Makefile
+++ b/arch/arm/mach-mx5/Makefile
@@ -4,7 +4,8 @@
 
 # Object file lists.
 obj-y   := system.o iomux.o cpu.o mm.o devices.o serial.o dma.o lpmodes.o pm.o \
-sdram_autogating.o bus_freq.o usb_dr.o usb_h1.o usb_h2.o dummy_gpio.o  early_setup.o
+sdram_autogating.o bus_freq.o usb_dr.o usb_h1.o usb_h2.o dummy_gpio.o  early_setup.o \
+check_fuse.o
 
 obj-$(CONFIG_ARCH_MX51) += clock.o suspend.o
 obj-$(CONFIG_ARCH_MX53) += clock.o suspend.o mx53_wp.o pm_da9053.o
diff --git a/arch/arm/mach-mx5/check_fuse.c b/arch/arm/mach-mx5/check_fuse.c
new file mode 100644
index 000000000000..a9ecf2c4fe74
--- /dev/null
+++ b/arch/arm/mach-mx5/check_fuse.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+/*
+ * 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.
+
+ * 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.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <mach/hardware.h>
+#include <mach/check_fuse.h>
+
+int mxc_fuse_get_gpu_status(void)
+{
+	void __iomem *reg_base = NULL;
+	u32 reg_val = 0;
+	int bit_status = 0;
+
+	if (cpu_is_mx53() || cpu_is_mx51()) {
+		reg_base = IO_ADDRESS(IIM_BASE_ADDR);
+		reg_val = readl(reg_base + MXC_IIM_MX5_DISABLERS_OFFSET);
+		bit_status = (reg_val & MXC_IIM_MX5_DISABLERS_GPU_MASK)
+				>> MXC_IIM_MX5_DISABLERS_GPU_SHIFT;
+	} else if (cpu_is_mx50()) {
+		reg_base = ioremap(OCOTP_CTRL_BASE_ADDR, SZ_8K);
+		reg_val = readl(reg_base + FSL_OCOTP_MX5_CFG2_OFFSET);
+		bit_status = (reg_val & FSL_OCOTP_MX5_DISABLERS_GPU_MASK)
+				>> FSL_OCOTP_MX5_DISABLERS_GPU_SHIFT;
+	}
+
+	return (1 == bit_status);
+}
+EXPORT_SYMBOL(mxc_fuse_get_gpu_status);
+
+int mxc_fuse_get_vpu_status(void)
+{
+	void __iomem *reg_base = NULL;
+	u32 reg_val = 0;
+	int bit_status = 0;
+
+	if (cpu_is_mx53()) {
+		reg_base = IO_ADDRESS(IIM_BASE_ADDR);
+		reg_val = readl(reg_base + MXC_IIM_MX5_DISABLERS_OFFSET);
+		bit_status = (reg_val & MXC_IIM_MX5_DISABLERS_VPU_MASK)
+				>> MXC_IIM_MX5_DISABLERS_VPU_SHIFT;
+	}
+
+	return (1 == bit_status);
+}
+EXPORT_SYMBOL(mxc_fuse_get_vpu_status);
+
diff --git a/arch/arm/mach-mx5/mx50_arm2.c b/arch/arm/mach-mx5/mx50_arm2.c
index c7680f9e3f15..d2fe44b0dbe4 100644
--- a/arch/arm/mach-mx5/mx50_arm2.c
+++ b/arch/arm/mach-mx5/mx50_arm2.c
@@ -60,6 +60,7 @@
 #include <mach/mxc_dvfs.h>
 #include <mach/iomux-mx50.h>
 #include <mach/i2c.h>
+#include <mach/check_fuse.h>
 
 #include "devices.h"
 #include "crm_regs.h"
@@ -1318,7 +1319,8 @@ static void __init mxc_board_init(void)
 
 	mxc_register_device(&mxc_rtc_device, NULL);
 	mxc_register_device(&mxc_w1_master_device, &mxc_w1_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxc_pxp_device, NULL);
 	mxc_register_device(&mxc_pxp_client_device, NULL);
 	mxc_register_device(&mxc_pxp_v4l2, NULL);
diff --git a/arch/arm/mach-mx5/mx50_rdp.c b/arch/arm/mach-mx5/mx50_rdp.c
index f19e96579ea5..2bd7d8cff00e 100644
--- a/arch/arm/mach-mx5/mx50_rdp.c
+++ b/arch/arm/mach-mx5/mx50_rdp.c
@@ -64,6 +64,7 @@
 #include <mach/mxc_dvfs.h>
 #include <mach/iomux-mx50.h>
 #include <mach/i2c.h>
+#include <mach/check_fuse.h>
 
 #include "devices.h"
 #include "usb.h"
@@ -1954,7 +1955,8 @@ static void __init mxc_board_init(void)
 
 	mxc_register_device(&mxc_rtc_device, NULL);
 	mxc_register_device(&mxc_w1_master_device, &mxc_w1_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxc_pxp_device, NULL);
 	mxc_register_device(&mxc_pxp_client_device, NULL);
 	mxc_register_device(&mxc_pxp_v4l2, NULL);
diff --git a/arch/arm/mach-mx5/mx51_3stack.c b/arch/arm/mach-mx5/mx51_3stack.c
index 148f6e260f06..f2f5ed6bc79b 100644
--- a/arch/arm/mach-mx5/mx51_3stack.c
+++ b/arch/arm/mach-mx5/mx51_3stack.c
@@ -46,6 +46,7 @@
 #include <mach/mmc.h>
 #include <mach/mxc_dvfs.h>
 #include <mach/i2c.h>
+#include <mach/check_fuse.h>
 
 #include "devices.h"
 #include "iomux.h"
@@ -985,8 +986,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_w1_master_device, &mxc_w1_data);
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 	mxc_register_device(&mx51_lpmode_device, NULL);
 	mxc_register_device(&busfreq_device, &bus_freq_data);
diff --git a/arch/arm/mach-mx5/mx51_babbage.c b/arch/arm/mach-mx5/mx51_babbage.c
index 58196617c72e..1a077b16b1fa 100644
--- a/arch/arm/mach-mx5/mx51_babbage.c
+++ b/arch/arm/mach-mx5/mx51_babbage.c
@@ -48,6 +48,7 @@
 #include <mach/iomux-mx51.h>
 #include <mach/i2c.h>
 #include <mach/mxc_iim.h>
+#include <mach/check_fuse.h>
 
 #include "devices.h"
 #include "crm_regs.h"
@@ -1205,8 +1206,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_w1_master_device, &mxc_w1_data);
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 	mxc_register_device(&mx51_lpmode_device, NULL);
 	mxc_register_device(&busfreq_device, &bus_freq_data);
diff --git a/arch/arm/mach-mx5/mx53_ard.c b/arch/arm/mach-mx5/mx53_ard.c
index c7081be27707..92d0ff8befde 100644
--- a/arch/arm/mach-mx5/mx53_ard.c
+++ b/arch/arm/mach-mx5/mx53_ard.c
@@ -61,6 +61,7 @@
 #include <mach/iomux-mx53.h>
 #include <mach/i2c.h>
 #include <mach/mxc_iim.h>
+#include <mach/check_fuse.h>
 
 #include "crm_regs.h"
 #include "devices.h"
@@ -1306,8 +1307,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_ldb_device, &ldb_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 
 	mxc_register_device(&mxc_dvfs_core_device, &dvfs_core_data);
diff --git a/arch/arm/mach-mx5/mx53_evk.c b/arch/arm/mach-mx5/mx53_evk.c
index b0571fae0b0d..db32e68abc27 100644
--- a/arch/arm/mach-mx5/mx53_evk.c
+++ b/arch/arm/mach-mx5/mx53_evk.c
@@ -60,6 +60,7 @@
 #include <mach/iomux-mx53.h>
 #include <mach/i2c.h>
 #include <mach/mxc_iim.h>
+#include <mach/check_fuse.h>
 
 #include "crm_regs.h"
 #include "devices.h"
@@ -1491,8 +1492,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_ldb_device, &ldb_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 	/*
 	mxc_register_device(&mx53_lpmode_device, NULL);
diff --git a/arch/arm/mach-mx5/mx53_loco.c b/arch/arm/mach-mx5/mx53_loco.c
index 7efb14e489c9..e86da0a24069 100644
--- a/arch/arm/mach-mx5/mx53_loco.c
+++ b/arch/arm/mach-mx5/mx53_loco.c
@@ -63,6 +63,7 @@
 #include <mach/iomux-mx53.h>
 #include <mach/i2c.h>
 #include <mach/mxc_iim.h>
+#include <mach/check_fuse.h>
 
 #include "crm_regs.h"
 #include "devices.h"
@@ -859,8 +860,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_ldb_device, &ldb_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 	mxc_register_device(&mxc_dvfs_core_device, &dvfs_core_data);
 	mxc_register_device(&busfreq_device, &bus_freq_data);
diff --git a/arch/arm/mach-mx5/mx53_smd.c b/arch/arm/mach-mx5/mx53_smd.c
index 042ec5fd259d..a5878202d885 100644
--- a/arch/arm/mach-mx5/mx53_smd.c
+++ b/arch/arm/mach-mx5/mx53_smd.c
@@ -64,6 +64,7 @@
 #include <mach/i2c.h>
 #include <mach/mxc_iim.h>
 #include <mach/mxc_rfkill.h>
+#include <mach/check_fuse.h>
 
 #include "crm_regs.h"
 #include "devices.h"
@@ -1205,8 +1206,10 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_ipu_device, &mxc_ipu_data);
 	mxc_register_device(&mxc_ldb_device, &ldb_data);
 	mxc_register_device(&mxc_tve_device, &tve_data);
-	mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
-	mxc_register_device(&gpu_device, &gpu_data);
+	if (!mxc_fuse_get_vpu_status())
+		mxc_register_device(&mxcvpu_device, &mxc_vpu_data);
+	if (!mxc_fuse_get_gpu_status())
+		mxc_register_device(&gpu_device, &gpu_data);
 	mxc_register_device(&mxcscc_device, NULL);
 	mxc_register_device(&mxc_dvfs_core_device, &dvfs_core_data);
 	mxc_register_device(&busfreq_device, &bus_freq_data);
diff --git a/arch/arm/plat-mxc/include/mach/check_fuse.h b/arch/arm/plat-mxc/include/mach/check_fuse.h
new file mode 100644
index 000000000000..270ece38650f
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/check_fuse.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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.
+
+ * 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.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __ARCH_ARM_MACH_MX5_FUSE_CHECK_H__
+#define __ARCH_ARM_MACH_MX5_FUSE_CHECK_H__
+
+#define MXC_IIM_MX5_DISABLERS_OFFSET 0x8
+#define MXC_IIM_MX5_DISABLERS_GPU_MASK 0x4
+#define MXC_IIM_MX5_DISABLERS_GPU_SHIFT 0x2
+#define MXC_IIM_MX5_DISABLERS_VPU_MASK 0x2
+#define MXC_IIM_MX5_DISABLERS_VPU_SHIFT 0x1
+
+#define FSL_OCOTP_MX5_CFG2_OFFSET 0x060
+#define FSL_OCOTP_MX5_DISABLERS_GPU_MASK 0x2000000
+#define FSL_OCOTP_MX5_DISABLERS_GPU_SHIFT 0x19
+
+int mxc_fuse_get_gpu_status(void);
+int mxc_fuse_get_vpu_status(void);
+
+#endif