/* * Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved. * * 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 #include #include #include "soctherm.h" #define NOMINAL_CALIB_FT 105 #define NOMINAL_CALIB_CP 25 #define FUSE_TSENSOR_CALIB_CP_TS_BASE_MASK 0x1fff #define FUSE_TSENSOR_CALIB_FT_TS_BASE_MASK (0x1fff << 13) #define FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT 13 #define FUSE_TSENSOR_COMMON 0x180 /* * Tegra210: Layout of bits in FUSE_TSENSOR_COMMON: * 3 2 1 0 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | BASE_FT | BASE_CP | SHFT_FT | SHIFT_CP | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * Tegra12x, etc: * In chips prior to Tegra210, this fuse was incorrectly sized as 26 bits, * and didn't hold SHIFT_CP in [31:26]. Therefore these missing six bits * were obtained via the FUSE_SPARE_REALIGNMENT_REG register [5:0]. * * FUSE_TSENSOR_COMMON: * 3 2 1 0 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |-----------| SHFT_FT | BASE_FT | BASE_CP | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * FUSE_SPARE_REALIGNMENT_REG: * 3 2 1 0 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |---------------------------------------------------| SHIFT_CP | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ #define CALIB_COEFFICIENT 1000000LL /** * div64_s64_precise() - wrapper for div64_s64() * @a: the dividend * @b: the divisor * * Implements division with fairly accurate rounding instead of truncation by * shifting the dividend to the left by 16 so that the quotient has a * much higher precision. * * Return: the quotient of a / b. */ static s64 div64_s64_precise(s64 a, s32 b) { s64 r, al; /* Scale up for increased precision division */ al = a << 16; r = div64_s64(al * 2 + 1, 2 * b); return r >> 16; } int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse, struct tsensor_shared_calib *shared) { u32 val; s32 shifted_cp, shifted_ft; int err; err = tegra_fuse_readl(FUSE_TSENSOR_COMMON, &val); if (err) return err; shared->base_cp = (val & tfuse->fuse_base_cp_mask) >> tfuse->fuse_base_cp_shift; shared->base_ft = (val & tfuse->fuse_base_ft_mask) >> tfuse->fuse_base_ft_shift; shifted_ft = (val & tfuse->fuse_shift_ft_mask) >> tfuse->fuse_shift_ft_shift; shifted_ft = sign_extend32(shifted_ft, 4); if (tfuse->fuse_spare_realignment) { err = tegra_fuse_readl(tfuse->fuse_spare_realignment, &val); if (err) return err; } shifted_cp = sign_extend32(val, 5); shared->actual_temp_cp = 2 * NOMINAL_CALIB_CP + shifted_cp; shared->actual_temp_ft = 2 * NOMINAL_CALIB_FT + shifted_ft; return 0; } int tegra_calc_tsensor_calib(const struct tegra_tsensor *sensor, const struct tsensor_shared_calib *shared, u32 *calibration) { const struct tegra_tsensor_group *sensor_group; u32 val, calib; s32 actual_tsensor_ft, actual_tsensor_cp; s32 delta_sens, delta_temp; s32 mult, div; s16 therma, thermb; s64 temp; int err; sensor_group = sensor->group; err = tegra_fuse_readl(sensor->calib_fuse_offset, &val); if (err) return err; actual_tsensor_cp = (shared->base_cp * 64) + sign_extend32(val, 12); val = (val & FUSE_TSENSOR_CALIB_FT_TS_BASE_MASK) >> FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT; actual_tsensor_ft = (shared->base_ft * 32) + sign_extend32(val, 12); delta_sens = actual_tsensor_ft - actual_tsensor_cp; delta_temp = shared->actual_temp_ft - shared->actual_temp_cp; mult = sensor_group->pdiv * sensor->config->tsample_ate; div = sensor->config->tsample * sensor_group->pdiv_ate; temp = (s64)delta_temp * (1LL << 13) * mult; therma = div64_s64_precise(temp, (s64)delta_sens * div); temp = ((s64)actual_tsensor_ft * shared->actual_temp_cp) - ((s64)actual_tsensor_cp * shared->actual_temp_ft); thermb = div64_s64_precise(temp, delta_sens); temp = (s64)therma * sensor->fuse_corr_alpha; therma = div64_s64_precise(temp, CALIB_COEFFICIENT); temp = (s64)thermb * sensor->fuse_corr_alpha + sensor->fuse_corr_beta; thermb = div64_s64_precise(temp, CALIB_COEFFICIENT); calib = ((u16)therma << SENSOR_CONFIG2_THERMA_SHIFT) | ((u16)thermb << SENSOR_CONFIG2_THERMB_SHIFT); *calibration = calib; return 0; } MODULE_AUTHOR("Wei Ni "); MODULE_DESCRIPTION("Tegra SOCTHERM fuse management"); MODULE_LICENSE("GPL v2"); 4a30b04b1f (patch) tree2d2021f8161db3e9ed38b9a966a225b66dff8e58 /net/ipv6/tcp_ipv6.c parent9b02c54bc951fca884ba5719f42a27e8240965bf (diff)
cpufreq: brcmstb-avs-cpufreq: properly retrieve P-state upon suspend
The AVS GET_PMAP command does return a P-state along with the P-map information. However, that P-state is the initial P-state when the P-map was first downloaded to AVS. It is *not* the current P-state. Therefore, we explicitly retrieve the P-state using the GET_PSTATE command. Signed-off-by: Markus Mayer <mmayer@broadcom.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')