* [PATCH 2/6] misc: fuse: Add efuse driver for Tegra
[not found] <1387468474-26521-1-git-send-email-pdeschrijver@nvidia.com>
@ 2013-12-19 15:54 ` Peter De Schrijver
[not found] ` <1387468474-26521-3-git-send-email-pdeschrijver-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-12-19 15:54 ` [PATCH 3/6] ARM: tegra: Add efuse bindings Peter De Schrijver
1 sibling, 1 reply; 5+ messages in thread
From: Peter De Schrijver @ 2013-12-19 15:54 UTC (permalink / raw)
To: Peter De Schrijver
Cc: linux-arm-kernel, linux-tegra, linux-kernel, Stephen Warren,
Thierry Reding, Grant Likely, Rob Herring, Danny Huang,
devicetree
Implement fuse driver for Tegra20, Tegra30, Tegra114 and Tegra124.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
drivers/misc/fuse/Kconfig | 12 ++
drivers/misc/fuse/Makefile | 1 +
drivers/misc/fuse/tegra/Makefile | 7 +
drivers/misc/fuse/tegra/fuse-tegra.c | 96 ++++++++++
drivers/misc/fuse/tegra/fuse-tegra20.c | 152 +++++++++++++++
drivers/misc/fuse/tegra/fuse-tegra30.c | 192 +++++++++++++++++++
drivers/misc/fuse/tegra/fuse.h | 79 ++++++++
drivers/misc/fuse/tegra/tegra114_speedo.c | 108 +++++++++++
drivers/misc/fuse/tegra/tegra124_speedo.c | 163 ++++++++++++++++
drivers/misc/fuse/tegra/tegra20_speedo.c | 110 +++++++++++
drivers/misc/fuse/tegra/tegra30_speedo.c | 293 +++++++++++++++++++++++++++++
11 files changed, 1213 insertions(+), 0 deletions(-)
create mode 100644 drivers/misc/fuse/Kconfig
create mode 100644 drivers/misc/fuse/Makefile
create mode 100644 drivers/misc/fuse/tegra/Makefile
create mode 100644 drivers/misc/fuse/tegra/fuse-tegra.c
create mode 100644 drivers/misc/fuse/tegra/fuse-tegra20.c
create mode 100644 drivers/misc/fuse/tegra/fuse-tegra30.c
create mode 100644 drivers/misc/fuse/tegra/fuse.h
create mode 100644 drivers/misc/fuse/tegra/tegra114_speedo.c
create mode 100644 drivers/misc/fuse/tegra/tegra124_speedo.c
create mode 100644 drivers/misc/fuse/tegra/tegra20_speedo.c
create mode 100644 drivers/misc/fuse/tegra/tegra30_speedo.c
diff --git a/drivers/misc/fuse/Kconfig b/drivers/misc/fuse/Kconfig
new file mode 100644
index 0000000..fb66758
--- /dev/null
+++ b/drivers/misc/fuse/Kconfig
@@ -0,0 +1,12 @@
+menu "fuse support"
+
+config FUSE_TEGRA
+ tristate "Tegra fuse supprt"
+ depends on ARCH_TEGRA && SYSFS
+ help
+ This drivers provides read-only to the e-fuses in Tegra chips.
+ Parsing of the data is left to userspace.
+
+ This driver can also be built as a module. If so, the module
+ will be called tegra_efuse.
+endmenu
diff --git a/drivers/misc/fuse/Makefile b/drivers/misc/fuse/Makefile
new file mode 100644
index 0000000..022c354
--- /dev/null
+++ b/drivers/misc/fuse/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_FUSE_TEGRA) += tegra/
diff --git a/drivers/misc/fuse/tegra/Makefile b/drivers/misc/fuse/tegra/Makefile
new file mode 100644
index 0000000..42829b3
--- /dev/null
+++ b/drivers/misc/fuse/tegra/Makefile
@@ -0,0 +1,7 @@
+obj-y += fuse-tegra.o
+obj-y += fuse-tegra30.o
+obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += fuse-tegra20.o
+obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_speedo.o
+obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_speedo.o
+obj-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114_speedo.o
+obj-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124_speedo.o
diff --git a/drivers/misc/fuse/tegra/fuse-tegra.c b/drivers/misc/fuse/tegra/fuse-tegra.c
new file mode 100644
index 0000000..0ebad76
--- /dev/null
+++ b/drivers/misc/fuse/tegra/fuse-tegra.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/kobject.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include "fuse.h"
+
+static u32 (*fuse_readl)(const unsigned int offset);
+static int fuse_size;
+
+static const char *tegra_revision_name[TEGRA_REVISION_MAX] = {
+ [TEGRA_REVISION_UNKNOWN] = "unknown",
+ [TEGRA_REVISION_A01] = "A01",
+ [TEGRA_REVISION_A02] = "A02",
+ [TEGRA_REVISION_A03] = "A03",
+ [TEGRA_REVISION_A03p] = "A03 prime",
+ [TEGRA_REVISION_A04] = "A04",
+};
+
+static u8 fuse_readb(const unsigned int offset)
+{
+ u32 val;
+
+ val = fuse_readl(round_down(offset, 4));
+ val >>= (offset % 4) * 8;
+ val &= 0xff;
+
+ return val;
+}
+
+static ssize_t fuse_read(struct file *fd, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf,
+ loff_t pos, size_t size)
+{
+ int i;
+
+ if (pos < 0 || pos >= fuse_size)
+ return 0;
+
+ if (size > fuse_size - pos)
+ size = fuse_size - pos;
+
+ for (i = 0; i < size; i++)
+ buf[i] = fuse_readb(pos + i);
+
+ return i;
+}
+
+static struct bin_attribute fuse_bin_attr = {
+ .attr = { .name = "fuse", .mode = S_IRUGO, },
+ .read = fuse_read,
+};
+
+int tegra_fuse_sysfs(struct device *dev, int size,
+ u32 (*readl)(const unsigned int offset),
+ struct tegra_sku_info *sku_info)
+{
+ int err;
+
+ if (fuse_size)
+ return -ENODEV;
+
+ fuse_bin_attr.size = size;
+ fuse_bin_attr.read = fuse_read;
+
+ fuse_size = size;
+ fuse_readl = readl;
+
+ err = device_create_bin_file(dev, &fuse_bin_attr);
+ if (err)
+ return err;
+
+ pr_info("Tegra Revision: %s SKU: %d CPU Process: %d Core Process: %d\n",
+ tegra_revision_name[sku_info->revision],
+ sku_info->sku_id, sku_info->cpu_process_id,
+ sku_info->core_process_id);
+
+ return 0;
+}
diff --git a/drivers/misc/fuse/tegra/fuse-tegra20.c b/drivers/misc/fuse/tegra/fuse-tegra20.c
new file mode 100644
index 0000000..c398bdf
--- /dev/null
+++ b/drivers/misc/fuse/tegra/fuse-tegra20.c
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Based on drivers/misc/eeprom/sunxi_sid.c
+ */
+
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/kobject.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+#include <linux/tegra-soc.h>
+
+#include "fuse.h"
+
+#define FUSE_BEGIN 0x100
+#define FUSE_SIZE 0x1f8
+#define FUSE_SKU_INFO 0x10
+#define FUSE_UID_LOW 0x08
+#define FUSE_UID_HIGH 0x0c
+
+static int fuse_size;
+static phys_addr_t fuse_phys;
+static struct clk *fuse_clk;
+static struct tegra_sku_info sku_info;
+
+static u32 tegra20_fuse_readl(const unsigned int offset)
+{
+ int ret;
+ u32 val;
+
+ clk_prepare_enable(fuse_clk);
+
+ ret = tegra_apb_readl_using_dma(fuse_phys + FUSE_BEGIN + offset, &val);
+
+ clk_disable_unprepare(fuse_clk);
+
+ return (ret < 0) ? 0 : val;
+}
+
+static enum tegra_revision get_revision(void)
+{
+ u32 minor_rev;
+
+ minor_rev = (tegra_read_chipid() >> 16) & 0xf;
+ switch (minor_rev) {
+ case 1:
+ return TEGRA_REVISION_A01;
+ case 2:
+ return TEGRA_REVISION_A02;
+ case 3:
+ if ((tegra20_spare_fuse(18) || tegra20_spare_fuse(19)))
+ return TEGRA_REVISION_A03p;
+ else
+ return TEGRA_REVISION_A03;
+ case 4:
+ return TEGRA_REVISION_A04;
+ default:
+ return TEGRA_REVISION_UNKNOWN;
+ }
+}
+
+static void fuse_randomness(void)
+{
+ u32 randomness[7];
+
+ randomness[0] = tegra20_fuse_readl(FUSE_SKU_INFO);
+ randomness[1] = tegra_read_straps();
+ randomness[2] = tegra_read_chipid();
+ randomness[3] = sku_info.cpu_process_id << 16;
+ randomness[3] |= sku_info.core_process_id;
+ randomness[4] = sku_info.cpu_speedo_id << 16 | sku_info.soc_speedo_id;
+ randomness[5] = tegra20_fuse_readl(FUSE_UID_LOW);
+ randomness[6] = tegra20_fuse_readl(FUSE_UID_HIGH);
+
+ add_device_randomness(randomness, sizeof(randomness));
+}
+
+bool tegra20_spare_fuse(int spare_bit)
+{
+ u32 offset = spare_bit * 4 + 0x100;
+
+ return tegra20_fuse_readl(offset) & 1;
+}
+
+static const struct of_device_id tegra20_fuse_of_match[] = {
+ { .compatible = "nvidia,tegra20-efuse" },
+}
+
+MODULE_DEVICE_TABLE(of, tegra20_fuse_of_match);
+
+static int tegra_fuse_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+
+ if (fuse_size)
+ return -ENODEV;
+
+ fuse_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(fuse_clk)) {
+ dev_err(&pdev->dev, "missing clock");
+ return PTR_ERR(fuse_clk);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ fuse_phys = res->start;
+
+ sku_info.revision = get_revision();
+ tegra20_init_speedo_data(&sku_info);
+ fuse_randomness();
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (tegra_fuse_sysfs(&pdev->dev, FUSE_SIZE, tegra20_fuse_readl,
+ &sku_info))
+ return -ENODEV;
+
+ dev_dbg(&pdev->dev, "loaded\n");
+
+ return 0;
+}
+
+static struct platform_driver tegra20_fuse_driver = {
+ .probe = tegra_fuse_probe,
+ .driver = {
+ .name = "tegra20_fuse",
+ .owner = THIS_MODULE,
+ .of_match_table = tegra20_fuse_of_match,
+ }
+};
+module_platform_driver(tegra20_fuse_driver);
+
+MODULE_AUTHOR("Peter De Schrijver");
+MODULE_DESCRIPTION("Tegra20 fuse driver");
+MODULE_LICENSE("GPLv2");
diff --git a/drivers/misc/fuse/tegra/fuse-tegra30.c b/drivers/misc/fuse/tegra/fuse-tegra30.c
new file mode 100644
index 0000000..315745c
--- /dev/null
+++ b/drivers/misc/fuse/tegra/fuse-tegra30.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+#include <linux/tegra-soc.h>
+
+#include "fuse.h"
+
+#define FUSE_BEGIN 0x100
+
+#define FUSE_SKU_INFO 0x10
+
+/* Tegra30 and later */
+#define FUSE_VENDOR_CODE 0x100
+#define FUSE_FAB_CODE 0x104
+#define FUSE_LOT_CODE_0 0x108
+#define FUSE_LOT_CODE_1 0x10c
+#define FUSE_WAFER_ID 0x110
+#define FUSE_X_COORDINATE 0x114
+#define FUSE_Y_COORDINATE 0x118
+
+#define FUSE_HAS_REVISION_INFO BIT(0)
+
+struct tegra_fuse_info {
+ int size;
+ int spare_bit;
+ void (*init_speedo_data)(struct tegra_sku_info *sku_info);
+};
+
+static void __iomem *fuse_base;
+static struct clk *fuse_clk;
+static struct tegra_fuse_info *fuse_info;
+static struct tegra_sku_info sku_info;
+
+u32 tegra30_fuse_readl(const unsigned int offset)
+{
+ u32 val;
+
+ clk_prepare_enable(fuse_clk);
+
+ val = readl_relaxed(fuse_base + FUSE_BEGIN + offset);
+
+ clk_disable_unprepare(fuse_clk);
+
+ return val;
+}
+
+bool tegra30_spare_fuse(int spare_bit)
+{
+ u32 offset = fuse_info->spare_bit + spare_bit * 4;
+
+ return tegra30_fuse_readl(offset) & 1;
+}
+
+static enum tegra_revision tegra_get_revision(void)
+{
+ u32 minor_rev;
+
+ minor_rev = (tegra_read_chipid() >> 16) & 0xf;
+ switch (minor_rev) {
+ case 1:
+ return TEGRA_REVISION_A01;
+ case 2:
+ return TEGRA_REVISION_A02;
+ case 3:
+ return TEGRA_REVISION_A03;
+ case 4:
+ return TEGRA_REVISION_A04;
+ default:
+ return TEGRA_REVISION_UNKNOWN;
+ }
+}
+
+static void fuse_randomness(void)
+{
+ u32 randomness[12];
+
+ randomness[0] = tegra30_fuse_readl(FUSE_SKU_INFO);
+ randomness[1] = tegra_read_straps();
+ randomness[2] = tegra_read_chipid();
+ randomness[3] = sku_info.cpu_process_id << 16;
+ randomness[3] |= sku_info.core_process_id;
+ randomness[4] = sku_info.cpu_speedo_id << 16;
+ randomness[4] |= sku_info.soc_speedo_id;
+ randomness[5] = tegra30_fuse_readl(FUSE_VENDOR_CODE);
+ randomness[6] = tegra30_fuse_readl(FUSE_FAB_CODE);
+ randomness[7] = tegra30_fuse_readl(FUSE_LOT_CODE_0);
+ randomness[8] = tegra30_fuse_readl(FUSE_LOT_CODE_1);
+ randomness[9] = tegra30_fuse_readl(FUSE_WAFER_ID);
+ randomness[10] = tegra30_fuse_readl(FUSE_X_COORDINATE);
+ randomness[11] = tegra30_fuse_readl(FUSE_Y_COORDINATE);
+
+ add_device_randomness(randomness, sizeof(randomness));
+}
+
+static struct tegra_fuse_info tegra30_info = {
+ .size = 0x2a4,
+ .spare_bit = 0x144,
+ .init_speedo_data = tegra30_init_speedo_data,
+};
+
+static struct tegra_fuse_info tegra114_info = {
+ .size = 0x2a0,
+ .init_speedo_data = tegra114_init_speedo_data,
+};
+
+static struct tegra_fuse_info tegra124_info = {
+ .size = 0x300,
+ .init_speedo_data = tegra124_init_speedo_data,
+};
+
+static const struct of_device_id tegra_fuse_of_match[] = {
+ { .compatible = "nvidia,tegra30-efuse", .data = &tegra30_info },
+ { .compatible = "nvidia,tegra114-efuse", .data = &tegra114_info },
+ { .compatible = "nvidia,tegra124-efuse", .data = &tegra124_info },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tegra_fuse_of_match);
+
+static int tegra_fuse_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *of_dev_id;
+ struct resource *res;
+
+ of_dev_id = of_match_device(tegra_fuse_of_match, &pdev->dev);
+ if (!of_dev_id)
+ return -ENODEV;
+ fuse_info = (struct tegra_fuse_info *)of_dev_id->data;
+
+ fuse_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(fuse_clk)) {
+ dev_err(&pdev->dev, "missing clock");
+ return PTR_ERR(fuse_clk);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ fuse_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(fuse_base)) {
+ dev_err(&pdev->dev, "unable to map base address");
+ return PTR_ERR(fuse_base);
+ }
+
+ sku_info.revision = tegra_get_revision();
+ fuse_info->init_speedo_data(&sku_info);
+ fuse_randomness();
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (tegra_fuse_sysfs(&pdev->dev, fuse_info->size, tegra30_fuse_readl,
+ &sku_info))
+ return -ENODEV;
+
+ dev_dbg(&pdev->dev, "loaded\n");
+
+ return 0;
+}
+
+static struct platform_driver tegra_fuse_driver = {
+ .probe = tegra_fuse_probe,
+ .driver = {
+ .name = "tegra_fuse",
+ .owner = THIS_MODULE,
+ .of_match_table = tegra_fuse_of_match,
+ }
+};
+module_platform_driver(tegra_fuse_driver);
+
+MODULE_AUTHOR("Peter De Schrijver");
+MODULE_DESCRIPTION("Tegra fuse driver");
+MODULE_LICENSE("GPLv2");
diff --git a/drivers/misc/fuse/tegra/fuse.h b/drivers/misc/fuse/tegra/fuse.h
new file mode 100644
index 0000000..d9db573
--- /dev/null
+++ b/drivers/misc/fuse/tegra/fuse.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2010 Google, Inc.
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author:
+ * Colin Cross <ccross@android.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 __DRIVERS_MISC_TEGRA_FUSE_H
+#define __DRIVERS_MISC_TEGRA_FUSE_H
+
+enum tegra_revision {
+ TEGRA_REVISION_UNKNOWN = 0,
+ TEGRA_REVISION_A01,
+ TEGRA_REVISION_A02,
+ TEGRA_REVISION_A03,
+ TEGRA_REVISION_A03p,
+ TEGRA_REVISION_A04,
+ TEGRA_REVISION_MAX,
+};
+
+struct tegra_sku_info {
+ int sku_id;
+ int cpu_process_id;
+ int cpu_speedo_id;
+ int cpu_speedo_value;
+ int cpu_iddq_value;
+ int core_process_id;
+ int soc_speedo_id;
+ int gpu_speedo_id;
+ int gpu_process_id;
+ int gpu_speedo_value;
+ enum tegra_revision revision;
+};
+
+int tegra_fuse_sysfs(struct device *dev, int size,
+ u32 (*readl)(const unsigned int offset),
+ struct tegra_sku_info *sku_info);
+
+bool tegra30_spare_fuse(int bit);
+u32 tegra30_fuse_readl(const unsigned int offset);
+
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+void tegra20_init_speedo_data(struct tegra_sku_info *sku_info);
+bool tegra20_spare_fuse(int bit);
+#else
+static inline void tegra20_init_speedo_data(struct tegra_sku_info *sku_info) {}
+static inline bool tegra20_spare_fuse(int bit) {}
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+void tegra30_init_speedo_data(struct tegra_sku_info *sku_info);
+#else
+static inline void tegra30_init_speedo_data(struct tegra_sku_info *sku_info) {}
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_114_SOC
+void tegra114_init_speedo_data(struct tegra_sku_info *sku_info);
+#else
+static inline void tegra114_init_speedo_data(struct tegra_sku_info *sku_info) {}
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_124_SOC
+void tegra124_init_speedo_data(struct tegra_sku_info *sku_info);
+#else
+static inline void tegra124_init_speedo_data(struct tegra_sku_info *sku_info) {}
+#endif
+
+#endif
diff --git a/drivers/misc/fuse/tegra/tegra114_speedo.c b/drivers/misc/fuse/tegra/tegra114_speedo.c
new file mode 100644
index 0000000..dc79b16
--- /dev/null
+++ b/drivers/misc/fuse/tegra/tegra114_speedo.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+
+#include "fuse.h"
+
+#define CORE_PROCESS_CORNERS_NUM 2
+#define CPU_PROCESS_CORNERS_NUM 2
+
+enum {
+ THRESHOLD_INDEX_0,
+ THRESHOLD_INDEX_1,
+ THRESHOLD_INDEX_COUNT,
+};
+
+static const u32 core_process_speedos[][CORE_PROCESS_CORNERS_NUM] = {
+ {1123, UINT_MAX},
+ {0, UINT_MAX},
+};
+
+static const u32 cpu_process_speedos[][CPU_PROCESS_CORNERS_NUM] = {
+ {1695, UINT_MAX},
+ {0, UINT_MAX},
+};
+
+static void rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
+ int *threshold)
+{
+ u32 tmp;
+ u32 sku = sku_info->sku_id;
+ enum tegra_revision rev = sku_info->revision;
+
+ switch (sku) {
+ case 0x00:
+ case 0x10:
+ case 0x05:
+ case 0x06:
+ sku_info->cpu_speedo_id = 1;
+ sku_info->soc_speedo_id = 0;
+ *threshold = THRESHOLD_INDEX_0;
+ break;
+
+ case 0x03:
+ case 0x04:
+ sku_info->cpu_speedo_id = 2;
+ sku_info->soc_speedo_id = 1;
+ *threshold = THRESHOLD_INDEX_1;
+ break;
+
+ default:
+ pr_err("Tegra114 Unknown SKU %d\n", sku);
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ *threshold = THRESHOLD_INDEX_0;
+ break;
+ }
+
+ if (rev == TEGRA_REVISION_A01) {
+ tmp = tegra30_fuse_readl(0x270) << 1;
+ tmp |= tegra30_fuse_readl(0x26c);
+ if (!tmp)
+ sku_info->cpu_speedo_id = 0;
+ }
+}
+
+void tegra114_init_speedo_data(struct tegra_sku_info *sku_info)
+{
+ u32 cpu_speedo_val;
+ u32 core_speedo_val;
+ int threshold;
+ int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+
+ rev_sku_to_speedo_ids(sku_info, &threshold);
+
+ cpu_speedo_val = tegra30_fuse_readl(0x12c) + 1024;
+ core_speedo_val = tegra30_fuse_readl(0x134);
+
+ for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++)
+ if (cpu_speedo_val < cpu_process_speedos[threshold][i])
+ break;
+ sku_info->cpu_process_id = i;
+
+ for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++)
+ if (core_speedo_val < core_process_speedos[threshold][i])
+ break;
+ sku_info->core_process_id = i;
+}
diff --git a/drivers/misc/fuse/tegra/tegra124_speedo.c b/drivers/misc/fuse/tegra/tegra124_speedo.c
new file mode 100644
index 0000000..60636d4
--- /dev/null
+++ b/drivers/misc/fuse/tegra/tegra124_speedo.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+#include <linux/tegra-soc.h>
+
+#include "fuse.h"
+
+#define CPU_PROCESS_CORNERS_NUM 2
+#define GPU_PROCESS_CORNERS_NUM 2
+#define CORE_PROCESS_CORNERS_NUM 2
+
+#define FUSE_CPU_SPEEDO_0 0x14
+#define FUSE_CPU_SPEEDO_1 0x2c
+#define FUSE_CPU_SPEEDO_2 0x30
+#define FUSE_SOC_SPEEDO_0 0x34
+#define FUSE_SOC_SPEEDO_1 0x38
+#define FUSE_SOC_SPEEDO_2 0x3c
+#define FUSE_CPU_IDDQ 0x18
+#define FUSE_SOC_IDDQ 0x40
+#define FUSE_GPU_IDDQ 0x128
+#define FUSE_FT_REV 0x28
+
+enum {
+ THRESHOLD_INDEX_0,
+ THRESHOLD_INDEX_1,
+ THRESHOLD_INDEX_COUNT,
+};
+
+static int cpu_speedo_0_value;
+static int cpu_speedo_1_value;
+static int soc_speedo_0_value;
+static int soc_speedo_1_value;
+static int soc_speedo_2_value;
+static int cpu_iddq_value;
+static int gpu_iddq_value;
+static int soc_iddq_value;
+
+static const u32 cpu_process_speedos[][CPU_PROCESS_CORNERS_NUM] = {
+ {2190, UINT_MAX},
+ {0, UINT_MAX},
+};
+
+static const u32 gpu_process_speedos[][GPU_PROCESS_CORNERS_NUM] = {
+ {1965, UINT_MAX},
+ {0, UINT_MAX},
+};
+
+static const u32 core_process_speedos[][CORE_PROCESS_CORNERS_NUM] = {
+ {2101, UINT_MAX},
+ {0, UINT_MAX},
+};
+
+static void rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
+ int *threshold)
+{
+ int sku = sku_info->sku_id;
+
+ /* Assign to default */
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ sku_info->gpu_speedo_id = 0;
+ *threshold = THRESHOLD_INDEX_0;
+
+ switch (sku) {
+ case 0x00: /* Eng sku */
+ case 0x0F:
+ /* Using the default */
+ break;
+
+ case 0x81:
+ case 0x83:
+ sku_info->cpu_speedo_id = 2;
+ break;
+
+ case 0x07:
+ sku_info->cpu_speedo_id = 1;
+ sku_info->soc_speedo_id = 1;
+ sku_info->gpu_speedo_id = 1;
+ *threshold = THRESHOLD_INDEX_1;
+ break;
+
+ default:
+ pr_err("Tegra124 Unknown SKU %d\n", sku);
+ /* Using the default for the error case */
+ break;
+ }
+}
+
+void tegra124_init_speedo_data(struct tegra_sku_info *sku_info)
+{
+ int i;
+ int threshold;
+
+ BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(gpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+
+ cpu_speedo_0_value = tegra30_fuse_readl(FUSE_CPU_SPEEDO_0);
+ cpu_speedo_1_value = tegra30_fuse_readl(FUSE_CPU_SPEEDO_1);
+
+ /* GPU Speedo is stored in CPU_SPEEDO_2 */
+ sku_info->gpu_speedo_value = tegra30_fuse_readl(FUSE_CPU_SPEEDO_2);
+
+ soc_speedo_0_value = tegra30_fuse_readl(FUSE_SOC_SPEEDO_0);
+ soc_speedo_1_value = tegra30_fuse_readl(FUSE_SOC_SPEEDO_1);
+ soc_speedo_2_value = tegra30_fuse_readl(FUSE_SOC_SPEEDO_2);
+
+ cpu_iddq_value = tegra30_fuse_readl(FUSE_CPU_IDDQ);
+ soc_iddq_value = tegra30_fuse_readl(FUSE_SOC_IDDQ);
+ gpu_iddq_value = tegra30_fuse_readl(FUSE_GPU_IDDQ);
+
+ sku_info->cpu_speedo_value = cpu_speedo_0_value;
+
+ if (sku_info->cpu_speedo_value == 0) {
+ pr_warn("Tegra124: Warning: Speedo value not fused.\n");
+ WARN_ON(1);
+ return;
+ }
+
+ rev_sku_to_speedo_ids(sku_info, &threshold);
+
+ sku_info->cpu_iddq_value = tegra30_fuse_readl(FUSE_CPU_IDDQ);
+
+ for (i = 0; i < GPU_PROCESS_CORNERS_NUM; i++)
+ if (sku_info->gpu_speedo_value <
+ gpu_process_speedos[threshold][i])
+ break;
+ sku_info->gpu_process_id = i;
+
+ for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++)
+ if (sku_info->cpu_speedo_value <
+ cpu_process_speedos[threshold][i])
+ break;
+ sku_info->cpu_process_id = i;
+
+ for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++)
+ if (soc_speedo_0_value <
+ core_process_speedos[threshold][i])
+ break;
+ sku_info->core_process_id = i;
+
+ pr_info("Tegra124: GPU Speedo ID=%d, Speedo Value=%d\n",
+ sku_info->gpu_speedo_id, sku_info->gpu_speedo_value);
+}
diff --git a/drivers/misc/fuse/tegra/tegra20_speedo.c b/drivers/misc/fuse/tegra/tegra20_speedo.c
new file mode 100644
index 0000000..443a142
--- /dev/null
+++ b/drivers/misc/fuse/tegra/tegra20_speedo.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/bug.h>
+
+#include "fuse.h"
+
+#define CPU_SPEEDO_LSBIT 20
+#define CPU_SPEEDO_MSBIT 29
+#define CPU_SPEEDO_REDUND_LSBIT 30
+#define CPU_SPEEDO_REDUND_MSBIT 39
+#define CPU_SPEEDO_REDUND_OFFS (CPU_SPEEDO_REDUND_MSBIT - CPU_SPEEDO_MSBIT)
+
+#define CORE_SPEEDO_LSBIT 40
+#define CORE_SPEEDO_MSBIT 47
+#define CORE_SPEEDO_REDUND_LSBIT 48
+#define CORE_SPEEDO_REDUND_MSBIT 55
+#define CORE_SPEEDO_REDUND_OFFS (CORE_SPEEDO_REDUND_MSBIT - CORE_SPEEDO_MSBIT)
+
+#define SPEEDO_MULT 4
+
+#define PROCESS_CORNERS_NUM 4
+
+#define SPEEDO_ID_SELECT_0(rev) ((rev) <= 2)
+#define SPEEDO_ID_SELECT_1(sku) \
+ (((sku) != 20) && ((sku) != 23) && ((sku) != 24) && \
+ ((sku) != 27) && ((sku) != 28))
+
+enum {
+ SPEEDO_ID_0,
+ SPEEDO_ID_1,
+ SPEEDO_ID_2,
+ SPEEDO_ID_COUNT,
+};
+
+static const u32 cpu_process_speedos[][PROCESS_CORNERS_NUM] = {
+ {315, 366, 420, UINT_MAX},
+ {303, 368, 419, UINT_MAX},
+ {316, 331, 383, UINT_MAX},
+};
+
+static const u32 core_process_speedos[][PROCESS_CORNERS_NUM] = {
+ {165, 195, 224, UINT_MAX},
+ {165, 195, 224, UINT_MAX},
+ {165, 195, 224, UINT_MAX},
+};
+
+void tegra20_init_speedo_data(struct tegra_sku_info *sku_info)
+{
+ u32 reg;
+ u32 val;
+ int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) != SPEEDO_ID_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) != SPEEDO_ID_COUNT);
+
+ if (SPEEDO_ID_SELECT_0(sku_info->revision))
+ sku_info->soc_speedo_id = SPEEDO_ID_0;
+ else if (SPEEDO_ID_SELECT_1(sku_info->sku_id))
+ sku_info->soc_speedo_id = SPEEDO_ID_1;
+ else
+ sku_info->soc_speedo_id = SPEEDO_ID_2;
+
+ val = 0;
+ for (i = CPU_SPEEDO_MSBIT; i >= CPU_SPEEDO_LSBIT; i--) {
+ reg = tegra20_spare_fuse(i) |
+ tegra20_spare_fuse(i + CPU_SPEEDO_REDUND_OFFS);
+ val = (val << 1) | (reg & 0x1);
+ }
+ val = val * SPEEDO_MULT;
+ pr_debug("%s CPU speedo value %u\n", __func__, val);
+
+ for (i = 0; i < (PROCESS_CORNERS_NUM - 1); i++) {
+ if (val <= cpu_process_speedos[sku_info->soc_speedo_id][i])
+ break;
+ }
+ sku_info->cpu_process_id = i;
+
+ val = 0;
+ for (i = CORE_SPEEDO_MSBIT; i >= CORE_SPEEDO_LSBIT; i--) {
+ reg = tegra20_spare_fuse(i) |
+ tegra20_spare_fuse(i + CORE_SPEEDO_REDUND_OFFS);
+ val = (val << 1) | (reg & 0x1);
+ }
+ val = val * SPEEDO_MULT;
+ pr_debug("%s Core speedo value %u\n", __func__, val);
+
+ for (i = 0; i < (PROCESS_CORNERS_NUM - 1); i++) {
+ if (val <= core_process_speedos[sku_info->soc_speedo_id][i])
+ break;
+ }
+ sku_info->core_process_id = i;
+
+ pr_info("Tegra20 Soc Speedo ID %d", sku_info->soc_speedo_id);
+}
diff --git a/drivers/misc/fuse/tegra/tegra30_speedo.c b/drivers/misc/fuse/tegra/tegra30_speedo.c
new file mode 100644
index 0000000..85af73d
--- /dev/null
+++ b/drivers/misc/fuse/tegra/tegra30_speedo.c
@@ -0,0 +1,293 @@
+/*
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+
+#include "fuse.h"
+
+#define CORE_PROCESS_CORNERS_NUM 1
+#define CPU_PROCESS_CORNERS_NUM 6
+
+#define FUSE_SPEEDO_CALIB_0 0x14
+#define FUSE_PACKAGE_INFO 0XFC
+#define FUSE_TEST_PROG_VER 0X28
+
+#define G_SPEEDO_BIT_MINUS1 58
+#define G_SPEEDO_BIT_MINUS1_R 59
+#define G_SPEEDO_BIT_MINUS2 60
+#define G_SPEEDO_BIT_MINUS2_R 61
+#define LP_SPEEDO_BIT_MINUS1 62
+#define LP_SPEEDO_BIT_MINUS1_R 63
+#define LP_SPEEDO_BIT_MINUS2 64
+#define LP_SPEEDO_BIT_MINUS2_R 65
+
+enum {
+ THRESHOLD_INDEX_0,
+ THRESHOLD_INDEX_1,
+ THRESHOLD_INDEX_2,
+ THRESHOLD_INDEX_3,
+ THRESHOLD_INDEX_4,
+ THRESHOLD_INDEX_5,
+ THRESHOLD_INDEX_6,
+ THRESHOLD_INDEX_7,
+ THRESHOLD_INDEX_8,
+ THRESHOLD_INDEX_9,
+ THRESHOLD_INDEX_10,
+ THRESHOLD_INDEX_11,
+ THRESHOLD_INDEX_COUNT,
+};
+
+static const u32 core_process_speedos[][CORE_PROCESS_CORNERS_NUM] = {
+ {180},
+ {170},
+ {195},
+ {180},
+ {168},
+ {192},
+ {180},
+ {170},
+ {195},
+ {180},
+ {180},
+ {180},
+};
+
+static const u32 cpu_process_speedos[][CPU_PROCESS_CORNERS_NUM] = {
+ {306, 338, 360, 376, UINT_MAX},
+ {295, 336, 358, 375, UINT_MAX},
+ {325, 325, 358, 375, UINT_MAX},
+ {325, 325, 358, 375, UINT_MAX},
+ {292, 324, 348, 364, UINT_MAX},
+ {324, 324, 348, 364, UINT_MAX},
+ {324, 324, 348, 364, UINT_MAX},
+ {295, 336, 358, 375, UINT_MAX},
+ {358, 358, 358, 358, 397, UINT_MAX},
+ {364, 364, 364, 364, 397, UINT_MAX},
+ {295, 336, 358, 375, 391, UINT_MAX},
+ {295, 336, 358, 375, 391, UINT_MAX},
+};
+
+static int threshold_index;
+static int package_id;
+
+static void fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp)
+{
+ u32 reg;
+ int ate_ver;
+ int bit_minus1;
+ int bit_minus2;
+
+ reg = tegra30_fuse_readl(FUSE_SPEEDO_CALIB_0);
+
+ *speedo_lp = (reg & 0xFFFF) * 4;
+ *speedo_g = ((reg >> 16) & 0xFFFF) * 4;
+
+ ate_ver = tegra30_fuse_readl(FUSE_TEST_PROG_VER);
+ pr_info("%s: ATE prog ver %d.%d\n", __func__, ate_ver/10, ate_ver%10);
+
+ if (ate_ver >= 26) {
+ bit_minus1 = tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS1);
+ bit_minus1 |= tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS1_R);
+ bit_minus2 = tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS2);
+ bit_minus2 |= tegra30_spare_fuse(LP_SPEEDO_BIT_MINUS2_R);
+ *speedo_lp |= (bit_minus1 << 1) | bit_minus2;
+
+ bit_minus1 = tegra30_spare_fuse(G_SPEEDO_BIT_MINUS1);
+ bit_minus1 |= tegra30_spare_fuse(G_SPEEDO_BIT_MINUS1_R);
+ bit_minus2 = tegra30_spare_fuse(G_SPEEDO_BIT_MINUS2);
+ bit_minus2 |= tegra30_spare_fuse(G_SPEEDO_BIT_MINUS2_R);
+ *speedo_g |= (bit_minus1 << 1) | bit_minus2;
+ } else {
+ *speedo_lp |= 0x3;
+ *speedo_g |= 0x3;
+ }
+}
+
+static void rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info)
+{
+ switch (sku_info->revision) {
+ case TEGRA_REVISION_A01:
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ threshold_index = THRESHOLD_INDEX_0;
+ break;
+ case TEGRA_REVISION_A02:
+ case TEGRA_REVISION_A03:
+ switch (sku_info->sku_id) {
+ case 0x87:
+ case 0x82:
+ sku_info->cpu_speedo_id = 1;
+ sku_info->soc_speedo_id = 1;
+ threshold_index = THRESHOLD_INDEX_1;
+ break;
+ case 0x81:
+ switch (package_id) {
+ case 1:
+ sku_info->cpu_speedo_id = 2;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_2;
+ break;
+ case 2:
+ sku_info->cpu_speedo_id = 4;
+ sku_info->soc_speedo_id = 1;
+ threshold_index = THRESHOLD_INDEX_7;
+ break;
+ default:
+ pr_err("Tegra30: Unknown pkg %d\n", package_id);
+ BUG();
+ break;
+ }
+ break;
+ case 0x80:
+ switch (package_id) {
+ case 1:
+ sku_info->cpu_speedo_id = 5;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_8;
+ break;
+ case 2:
+ sku_info->cpu_speedo_id = 6;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_9;
+ break;
+ default:
+ pr_err("Tegra30: Unknown pkg %d\n", package_id);
+ BUG();
+ break;
+ }
+ break;
+ case 0x83:
+ switch (package_id) {
+ case 1:
+ sku_info->cpu_speedo_id = 7;
+ sku_info->soc_speedo_id = 1;
+ threshold_index = THRESHOLD_INDEX_10;
+ break;
+ case 2:
+ sku_info->cpu_speedo_id = 3;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_3;
+ break;
+ default:
+ pr_err("Tegra30: Unknown pkg %d\n", package_id);
+ BUG();
+ break;
+ }
+ break;
+ case 0x8F:
+ sku_info->cpu_speedo_id = 8;
+ sku_info->soc_speedo_id = 1;
+ threshold_index = THRESHOLD_INDEX_11;
+ break;
+ case 0x08:
+ sku_info->cpu_speedo_id = 1;
+ sku_info->soc_speedo_id = 1;
+ threshold_index = THRESHOLD_INDEX_4;
+ break;
+ case 0x02:
+ sku_info->cpu_speedo_id = 2;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_5;
+ break;
+ case 0x04:
+ sku_info->cpu_speedo_id = 3;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_6;
+ break;
+ case 0:
+ switch (package_id) {
+ case 1:
+ sku_info->cpu_speedo_id = 2;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_2;
+ break;
+ case 2:
+ sku_info->cpu_speedo_id = 3;
+ sku_info->soc_speedo_id = 2;
+ threshold_index = THRESHOLD_INDEX_3;
+ break;
+ default:
+ pr_err("Tegra30: Unknown pkg %d\n", package_id);
+ BUG();
+ break;
+ }
+ break;
+ default:
+ pr_warn("Tegra30: Unknown SKU %d\n", sku_info->sku_id);
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ threshold_index = THRESHOLD_INDEX_0;
+ break;
+ }
+ break;
+ default:
+ pr_warn("Tegra30: Unknown chip rev %d\n", sku_info->revision);
+ sku_info->cpu_speedo_id = 0;
+ sku_info->soc_speedo_id = 0;
+ threshold_index = THRESHOLD_INDEX_0;
+ break;
+ }
+}
+
+void tegra30_init_speedo_data(struct tegra_sku_info *sku_info)
+{
+ u32 cpu_speedo_val;
+ u32 core_speedo_val;
+ int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+ BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) !=
+ THRESHOLD_INDEX_COUNT);
+
+ package_id = tegra30_fuse_readl(FUSE_PACKAGE_INFO) & 0x0F;
+
+ rev_sku_to_speedo_ids(sku_info);
+ fuse_speedo_calib(&cpu_speedo_val, &core_speedo_val);
+ pr_debug("%s CPU speedo value %u\n", __func__, cpu_speedo_val);
+ pr_debug("%s Core speedo value %u\n", __func__, core_speedo_val);
+
+ for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++) {
+ if (cpu_speedo_val < cpu_process_speedos[threshold_index][i])
+ break;
+ }
+ sku_info->cpu_process_id = i - 1;
+
+ if (sku_info->cpu_process_id == -1) {
+ pr_warn("Tegra30: CPU speedo value %3d out of range",
+ cpu_speedo_val);
+ sku_info->cpu_process_id = 0;
+ sku_info->cpu_speedo_id = 1;
+ }
+
+ for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++) {
+ if (core_speedo_val < core_process_speedos[threshold_index][i])
+ break;
+ }
+ sku_info->core_process_id = i - 1;
+
+ if (sku_info->core_process_id == -1) {
+ pr_warn("Tegra30: CORE speedo value %3d out of range",
+ core_speedo_val);
+ sku_info->core_process_id = 0;
+ sku_info->soc_speedo_id = 1;
+ }
+
+ pr_info("Tegra30: CPU Speedo ID %d, Soc Speedo ID %d",
+ sku_info->cpu_speedo_id, sku_info->soc_speedo_id);
+}
--
1.7.7.rc0.72.g4b5ea.dirty
^ permalink raw reply related [flat|nested] 5+ messages in thread