[PATCH v7 5/5] ARM: tegra: build new fuse driver in drivers/misc

Peter De Schrijver
2014-06-05T13:09:38Z

The Tegra fuse code has moved to drivers/misc/fuse/tegra. Enable the
building of that code, and disable the building of the old fuse code in
arch/arm/mach-tegra/.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/Makefile | 4 -
arch/arm/mach-tegra/fuse.c | 252 ----------------------------
arch/arm/mach-tegra/fuse.h | 61 -------
arch/arm/mach-tegra/tegra114_speedo.c | 105 ------------
arch/arm/mach-tegra/tegra20_speedo.c | 110 ------------
arch/arm/mach-tegra/tegra30_speedo.c | 293 ---------------------------------
drivers/misc/Makefile | 1 +
7 files changed, 1 insertions(+), 825 deletions(-)
delete mode 100644 arch/arm/mach-tegra/fuse.c
delete mode 100644 arch/arm/mach-tegra/fuse.h
delete mode 100644 arch/arm/mach-tegra/tegra114_speedo.c
delete mode 100644 arch/arm/mach-tegra/tegra20_speedo.c
delete mode 100644 arch/arm/mach-tegra/tegra30_speedo.c

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 6fbfbb7..e8601bb 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -2,7 +2,6 @@ asflags-y += -march=armv7-a

obj-y += io.o
obj-y += irq.o
-obj-y += fuse.o
obj-y += pmc.o
obj-y += flowctrl.o
obj-y += powergate.o
@@ -13,13 +12,11 @@ obj-y += reset-handler.o
obj-y += sleep.o
obj-y += tegra.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
-obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_speedo.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += sleep-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pm-tegra20.o
ifeq ($(CONFIG_CPU_IDLE),y)
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += cpuidle-tegra20.o
endif
-obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_speedo.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += sleep-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o
ifeq ($(CONFIG_CPU_IDLE),y)
@@ -28,7 +25,6 @@ endif
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o

-obj-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114_speedo.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += sleep-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += pm-tegra30.o
ifeq ($(CONFIG_CPU_IDLE),y)
diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c
deleted file mode 100644
index c9ac23b..0000000
--- a/arch/arm/mach-tegra/fuse.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * arch/arm/mach-tegra/fuse.c
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/export.h>
-#include <linux/random.h>
-#include <linux/clk.h>
-#include <linux/tegra-soc.h>
-
-#include "fuse.h"
-#include "iomap.h"
-#include "apbio.h"
-
-/* Tegra20 only */
-#define FUSE_UID_LOW 0x108
-#define FUSE_UID_HIGH 0x10c
-
-/* Tegra30 and later */
-#define FUSE_VENDOR_CODE 0x200
-#define FUSE_FAB_CODE 0x204
-#define FUSE_LOT_CODE_0 0x208
-#define FUSE_LOT_CODE_1 0x20c
-#define FUSE_WAFER_ID 0x210
-#define FUSE_X_COORDINATE 0x214
-#define FUSE_Y_COORDINATE 0x218
-
-#define FUSE_SKU_INFO 0x110
-
-#define TEGRA20_FUSE_SPARE_BIT 0x200
-#define TEGRA30_FUSE_SPARE_BIT 0x244
-
-int tegra_sku_id;
-int tegra_cpu_process_id;
-int tegra_core_process_id;
-int tegra_chip_id;
-int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */
-int tegra_soc_speedo_id;
-enum tegra_revision tegra_revision;
-
-static struct clk *fuse_clk;
-static int tegra_fuse_spare_bit;
-static void (*tegra_init_speedo_data)(void);
-
-/* The BCT to use at boot is specified by board straps that can be read
- * through a APB misc register and decoded. 2 bits, i.e. 4 possible BCTs.
- */
-int tegra_bct_strapping;
-
-#define STRAP_OPT 0x008
-#define GMI_AD0 (1 << 4)
-#define GMI_AD1 (1 << 5)
-#define RAM_ID_MASK (GMI_AD0 | GMI_AD1)
-#define RAM_CODE_SHIFT 4
-
-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 void tegra_fuse_enable_clk(void)
-{
- if (IS_ERR(fuse_clk))
- fuse_clk = clk_get_sys(NULL, "fuse");
- if (IS_ERR(fuse_clk))
- return;
- clk_prepare_enable(fuse_clk);
-}
-
-static void tegra_fuse_disable_clk(void)
-{
- if (IS_ERR(fuse_clk))
- return;
- clk_disable_unprepare(fuse_clk);
-}
-
-u32 tegra_fuse_readl(unsigned long offset)
-{
- return tegra_apb_readl(TEGRA_FUSE_BASE + offset);
-}
-
-bool tegra_spare_fuse(int bit)
-{
- bool ret;
-
- tegra_fuse_enable_clk();
-
- ret = tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
-
- tegra_fuse_disable_clk();
-
- return ret;
-}
-
-static enum tegra_revision tegra_get_revision(u32 id)
-{
- u32 minor_rev = (id >> 16) & 0xf;
-
- switch (minor_rev) {
- case 1:
- return TEGRA_REVISION_A01;
- case 2:
- return TEGRA_REVISION_A02;
- case 3:
- if (tegra_chip_id == TEGRA20 &&
- (tegra_spare_fuse(18) || tegra_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 tegra_get_process_id(void)
-{
- u32 reg;
-
- tegra_fuse_enable_clk();
-
- reg = tegra_fuse_readl(tegra_fuse_spare_bit);
- tegra_cpu_process_id = (reg >> 6) & 3;
- reg = tegra_fuse_readl(tegra_fuse_spare_bit);
- tegra_core_process_id = (reg >> 12) & 3;
-
- tegra_fuse_disable_clk();
-}
-
-u32 tegra_read_chipid(void)
-{
- return readl_relaxed(IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804);
-}
-
-static void __init tegra20_fuse_init_randomness(void)
-{
- u32 randomness[2];
-
- randomness[0] = tegra_fuse_readl(FUSE_UID_LOW);
- randomness[1] = tegra_fuse_readl(FUSE_UID_HIGH);
-
- add_device_randomness(randomness, sizeof(randomness));
-}
-
-/* Applies to Tegra30 or later */
-static void __init tegra30_fuse_init_randomness(void)
-{
- u32 randomness[7];
-
- randomness[0] = tegra_fuse_readl(FUSE_VENDOR_CODE);
- randomness[1] = tegra_fuse_readl(FUSE_FAB_CODE);
- randomness[2] = tegra_fuse_readl(FUSE_LOT_CODE_0);
- randomness[3] = tegra_fuse_readl(FUSE_LOT_CODE_1);
- randomness[4] = tegra_fuse_readl(FUSE_WAFER_ID);
- randomness[5] = tegra_fuse_readl(FUSE_X_COORDINATE);
- randomness[6] = tegra_fuse_readl(FUSE_Y_COORDINATE);
-
- add_device_randomness(randomness, sizeof(randomness));
-}
-
-void __init tegra_init_fuse(void)
-{
- u32 id;
- u32 randomness[5];
-
- u32 reg = readl(IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x48));
- reg |= 1 << 28;
- writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x48));
-
- /*
- * Enable FUSE clock. This needs to be hardcoded because the clock
- * subsystem is not active during early boot.
- */
- reg = readl(IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
- reg |= 1 << 7;
- writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
- fuse_clk = ERR_PTR(-EINVAL);
-
- reg = tegra_fuse_readl(FUSE_SKU_INFO);
- randomness[0] = reg;
- tegra_sku_id = reg & 0xFF;
-
- reg = tegra_apb_readl(TEGRA_APB_MISC_BASE + STRAP_OPT);
- randomness[1] = reg;
- tegra_bct_strapping = (reg & RAM_ID_MASK) >> RAM_CODE_SHIFT;
-
- id = tegra_read_chipid();
- randomness[2] = id;
- tegra_chip_id = (id >> 8) & 0xff;
-
- switch (tegra_chip_id) {
- case TEGRA20:
- tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
- tegra_init_speedo_data = &tegra20_init_speedo_data;
- break;
- case TEGRA30:
- tegra_fuse_spare_bit = TEGRA30_FUSE_SPARE_BIT;
- tegra_init_speedo_data = &tegra30_init_speedo_data;
- break;
- case TEGRA114:
- tegra_init_speedo_data = &tegra114_init_speedo_data;
- break;
- default:
- pr_warn("Tegra: unknown chip id %d\n", tegra_chip_id);
- tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT;
- tegra_init_speedo_data = &tegra_get_process_id;
- }
-
- tegra_revision = tegra_get_revision(id);
- tegra_init_speedo_data();
- randomness[3] = (tegra_cpu_process_id << 16) | tegra_core_process_id;
- randomness[4] = (tegra_cpu_speedo_id << 16) | tegra_soc_speedo_id;
-
- add_device_randomness(randomness, sizeof(randomness));
- switch (tegra_chip_id) {
- case TEGRA20:
- tegra20_fuse_init_randomness();
- break;
- case TEGRA30:
- case TEGRA114:
- default:
- tegra30_fuse_init_randomness();
- break;
- }
-
- pr_info("Tegra Revision: %s SKU: %d CPU Process: %d Core Process: %d\n",
- tegra_revision_name[tegra_revision],
- tegra_sku_id, tegra_cpu_process_id,
- tegra_core_process_id);
-}
diff --git a/arch/arm/mach-tegra/fuse.h b/arch/arm/mach-tegra/fuse.h
deleted file mode 100644
index b17c4ba..0000000
--- a/arch/arm/mach-tegra/fuse.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * 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 __MACH_TEGRA_FUSE_H
-#define __MACH_TEGRA_FUSE_H
-
-#define SKU_ID_T20 8
-#define SKU_ID_T25SE 20
-#define SKU_ID_AP25 23
-#define SKU_ID_T25 24
-#define SKU_ID_AP25E 27
-#define SKU_ID_T25E 28
-
-#ifndef __ASSEMBLY__
-
-extern int tegra_sku_id;
-extern int tegra_cpu_process_id;
-extern int tegra_core_process_id;
-extern int tegra_chip_id;
-extern int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */
-extern int tegra_soc_speedo_id;
-
-unsigned long long tegra_chip_uid(void);
-bool tegra_spare_fuse(int bit);
-u32 tegra_fuse_readl(unsigned long offset);
-
-#ifdef CONFIG_ARCH_TEGRA_2x_SOC
-void tegra20_init_speedo_data(void);
-#else
-static inline void tegra20_init_speedo_data(void) {}
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_3x_SOC
-void tegra30_init_speedo_data(void);
-#else
-static inline void tegra30_init_speedo_data(void) {}
-#endif
-
-#ifdef CONFIG_ARCH_TEGRA_114_SOC
-void tegra114_init_speedo_data(void);
-#else
-static inline void tegra114_init_speedo_data(void) {}
-#endif
-#endif /* __ASSEMBLY__ */
-
-#endif
diff --git a/arch/arm/mach-tegra/tegra114_speedo.c b/arch/arm/mach-tegra/tegra114_speedo.c
deleted file mode 100644
index 7c73716..0000000
--- a/arch/arm/mach-tegra/tegra114_speedo.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * 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/kernel.h>
-#include <linux/bug.h>
-#include <linux/tegra-soc.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(int rev, int sku, int *threshold)
-{
- u32 tmp;
-
- switch (sku) {
- case 0x00:
- case 0x10:
- case 0x05:
- case 0x06:
- tegra_cpu_speedo_id = 1;
- tegra_soc_speedo_id = 0;
- *threshold = THRESHOLD_INDEX_0;
- break;
-
- case 0x03:
- case 0x04:
- tegra_cpu_speedo_id = 2;
- tegra_soc_speedo_id = 1;
- *threshold = THRESHOLD_INDEX_1;
- break;
-
- default:
- pr_err("Tegra114 Unknown SKU %d\n", sku);
- tegra_cpu_speedo_id = 0;
- tegra_soc_speedo_id = 0;
- *threshold = THRESHOLD_INDEX_0;
- break;
- }
-
- if (rev == TEGRA_REVISION_A01) {
- tmp = tegra_fuse_readl(0x270) << 1;
- tmp |= tegra_fuse_readl(0x26c);
- if (!tmp)
- tegra_cpu_speedo_id = 0;
- }
-}
-
-void tegra114_init_speedo_data(void)
-{
- 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(tegra_revision, tegra_sku_id, &threshold);
-
- cpu_speedo_val = tegra_fuse_readl(0x12c) + 1024;
- core_speedo_val = tegra_fuse_readl(0x134);
-
- for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++)
- if (cpu_speedo_val < cpu_process_speedos[threshold][i])
- break;
- tegra_cpu_process_id = i;
-
- for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++)
- if (core_speedo_val < core_process_speedos[threshold][i])
- break;
- tegra_core_process_id = i;
-}
diff --git a/arch/arm/mach-tegra/tegra20_speedo.c b/arch/arm/mach-tegra/tegra20_speedo.c
deleted file mode 100644
index 3b1bb53..0000000
--- a/arch/arm/mach-tegra/tegra20_speedo.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * 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/bug.h>
-#include <linux/tegra-soc.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(void)
-{
- 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(tegra_revision))
- tegra_soc_speedo_id = SPEEDO_ID_0;
- else if (SPEEDO_ID_SELECT_1(tegra_sku_id))
- tegra_soc_speedo_id = SPEEDO_ID_1;
- else
- tegra_soc_speedo_id = SPEEDO_ID_2;
-
- val = 0;
- for (i = CPU_SPEEDO_MSBIT; i >= CPU_SPEEDO_LSBIT; i--) {
- reg = tegra_spare_fuse(i) |
- tegra_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[tegra_soc_speedo_id][i])
- break;
- }
- tegra_cpu_process_id = i;
-
- val = 0;
- for (i = CORE_SPEEDO_MSBIT; i >= CORE_SPEEDO_LSBIT; i--) {
- reg = tegra_spare_fuse(i) |
- tegra_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[tegra_soc_speedo_id][i])
- break;
- }
- tegra_core_process_id = i;
-
- pr_info("Tegra20 Soc Speedo ID %d", tegra_soc_speedo_id);
-}
diff --git a/arch/arm/mach-tegra/tegra30_speedo.c b/arch/arm/mach-tegra/tegra30_speedo.c
deleted file mode 100644
index 81a958d..0000000
--- a/arch/arm/mach-tegra/tegra30_speedo.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * 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/bug.h>
-#include <linux/tegra-soc.h>
-
-#include "fuse.h"
-
-#define CORE_PROCESS_CORNERS_NUM 1
-#define CPU_PROCESS_CORNERS_NUM 6
-
-#define FUSE_SPEEDO_CALIB_0 0x114
-#define FUSE_PACKAGE_INFO 0X1FC
-#define FUSE_TEST_PROG_VER 0X128
-
-#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 = tegra_fuse_readl(FUSE_SPEEDO_CALIB_0);
-
- *speedo_lp = (reg & 0xFFFF) * 4;
- *speedo_g = ((reg >> 16) & 0xFFFF) * 4;
-
- ate_ver = tegra_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 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1);
- bit_minus1 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1_R);
- bit_minus2 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2);
- bit_minus2 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2_R);
- *speedo_lp |= (bit_minus1 << 1) | bit_minus2;
-
- bit_minus1 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS1);
- bit_minus1 |= tegra_spare_fuse(G_SPEEDO_BIT_MINUS1_R);
- bit_minus2 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS2);
- bit_minus2 |= tegra_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(int rev, int sku)
-{
- switch (rev) {
- case TEGRA_REVISION_A01:
- tegra_cpu_speedo_id = 0;
- tegra_soc_speedo_id = 0;
- threshold_index = THRESHOLD_INDEX_0;
- break;
- case TEGRA_REVISION_A02:
- case TEGRA_REVISION_A03:
- switch (sku) {
- case 0x87:
- case 0x82:
- tegra_cpu_speedo_id = 1;
- tegra_soc_speedo_id = 1;
- threshold_index = THRESHOLD_INDEX_1;
- break;
- case 0x81:
- switch (package_id) {
- case 1:
- tegra_cpu_speedo_id = 2;
- tegra_soc_speedo_id = 2;
- threshold_index = THRESHOLD_INDEX_2;
- break;
- case 2:
- tegra_cpu_speedo_id = 4;
- tegra_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:
- tegra_cpu_speedo_id = 5;
- tegra_soc_speedo_id = 2;
- threshold_index = THRESHOLD_INDEX_8;
- break;
- case 2:
- tegra_cpu_speedo_id = 6;
- tegra_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:
- tegra_cpu_speedo_id = 7;
- tegra_soc_speedo_id = 1;
- threshold_index = THRESHOLD_INDEX_10;
- break;
- case 2:
- tegra_cpu_speedo_id = 3;
- tegra_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:
- tegra_cpu_speedo_id = 8;
- tegra_soc_speedo_id = 1;
- threshold_index = THRESHOLD_INDEX_11;
- break;
- case 0x08:
- tegra_cpu_speedo_id = 1;
- tegra_soc_speedo_id = 1;
- threshold_index = THRESHOLD_INDEX_4;
- break;
- case 0x02:
- tegra_cpu_speedo_id = 2;
- tegra_soc_speedo_id = 2;
- threshold_index = THRESHOLD_INDEX_5;
- break;
- case 0x04:
- tegra_cpu_speedo_id = 3;
- tegra_soc_speedo_id = 2;
- threshold_index = THRESHOLD_INDEX_6;
- break;
- case 0:
- switch (package_id) {
- case 1:
- tegra_cpu_speedo_id = 2;
- tegra_soc_speedo_id = 2;
- threshold_index = THRESHOLD_INDEX_2;
- break;
- case 2:
- tegra_cpu_speedo_id = 3;
- tegra_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);
- tegra_cpu_speedo_id = 0;
- tegra_soc_speedo_id = 0;
- threshold_index = THRESHOLD_INDEX_0;
- break;
- }
- break;
- default:
- pr_warn("Tegra30: Unknown chip rev %d\n", rev);
- tegra_cpu_speedo_id = 0;
- tegra_soc_speedo_id = 0;
- threshold_index = THRESHOLD_INDEX_0;
- break;
- }
-}
-
-void tegra30_init_speedo_data(void)
-{
- 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 = tegra_fuse_readl(FUSE_PACKAGE_INFO) & 0x0F;
-
- rev_sku_to_speedo_ids(tegra_revision, tegra_sku_id);
- 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;
- }
- tegra_cpu_process_id = i - 1;
-
- if (tegra_cpu_process_id == -1) {
- pr_warn("Tegra30: CPU speedo value %3d out of range",
- cpu_speedo_val);
- tegra_cpu_process_id = 0;
- tegra_cpu_speedo_id = 1;
- }
-
- for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++) {
- if (core_speedo_val < core_process_speedos[threshold_index][i])
- break;
- }
- tegra_core_process_id = i - 1;
-
- if (tegra_core_process_id == -1) {
- pr_warn("Tegra30: CORE speedo value %3d out of range",
- core_speedo_val);
- tegra_core_process_id = 0;
- tegra_soc_speedo_id = 1;
- }
-
- pr_info("Tegra30: CPU Speedo ID %d, Soc Speedo ID %d",
- tegra_cpu_speedo_id, tegra_soc_speedo_id);
-}
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 7eb4b69..ecb9349 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -55,3 +55,4 @@ obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
obj-$(CONFIG_GENWQE) += genwqe/
obj-$(CONFIG_ECHO) += echo/
+obj-y += fuse/
--
1.7.7.rc0.72.g4b5ea.dirty