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author | H. Peter Anvin <hpa@linux.intel.com> | 2013-01-25 16:31:21 -0800 |
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committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-01-25 16:31:21 -0800 |
commit | 7b5c4a65cc27f017c170b025f8d6d75dabb11c6f (patch) | |
tree | 05deacbc66a9f5c27147a6ea975211ae82281044 /arch/arm/mach-tegra/tegra20_speedo.c | |
parent | 3596f5bb0a6afd01a784bfe120f420edbbf82861 (diff) | |
parent | 949db153b6466c6f7cad5a427ecea94985927311 (diff) | |
download | op-kernel-dev-7b5c4a65cc27f017c170b025f8d6d75dabb11c6f.zip op-kernel-dev-7b5c4a65cc27f017c170b025f8d6d75dabb11c6f.tar.gz |
Merge tag 'v3.8-rc5' into x86/mm
The __pa() fixup series that follows touches KVM code that is not
present in the existing branch based on v3.7-rc5, so merge in the
current upstream from Linus.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra20_speedo.c')
-rw-r--r-- | arch/arm/mach-tegra/tegra20_speedo.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra20_speedo.c b/arch/arm/mach-tegra/tegra20_speedo.c new file mode 100644 index 0000000..fa6eb57 --- /dev/null +++ b/arch/arm/mach-tegra/tegra20_speedo.c @@ -0,0 +1,109 @@ +/* + * 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 "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); +} |