diff options
Diffstat (limited to 'drivers/thermal/qcom/tsens-v0_1.c')
| -rw-r--r-- | drivers/thermal/qcom/tsens-v0_1.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c index 6c9e491f9559..3c08ad640940 100644 --- a/drivers/thermal/qcom/tsens-v0_1.c +++ b/drivers/thermal/qcom/tsens-v0_1.c @@ -3,6 +3,7 @@ * Copyright (c) 2015, The Linux Foundation. All rights reserved. */ +#include <linux/nvmem-consumer.h> #include <linux/platform_device.h> #include "tsens.h" @@ -354,6 +355,50 @@ static int calibrate_8939(struct tsens_priv *priv) return 0; } +static int calibrate_8974_nvmem(struct tsens_priv *priv) +{ + int i, ret, mode; + u32 p1[11], p2[11]; + u32 backup; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "use_backup", &backup); + if (ret == -ENOENT) + dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n"); + if (ret < 0) + return ret; + + mode = tsens_read_calibration(priv, 2, p1, p2, backup == BKP_SEL); + if (mode < 0) + return mode; + + if (mode == NO_PT_CALIB) { + p1[0] += 2; + p1[1] += 9; + p1[2] += 3; + p1[3] += 9; + p1[4] += 5; + p1[5] += 9; + p1[6] += 7; + p1[7] += 10; + p1[8] += 8; + p1[9] += 9; + p1[10] += 8; + } else { + for (i = 0; i < priv->num_sensors; i++) { + /* + * ONE_PT_CALIB requires using addition here instead of + * using OR operation. + */ + p1[i] += BIT_APPEND; + p2[i] += BIT_APPEND; + } + } + + compute_intercept_slope(priv, p1, p2, mode); + + return 0; +} + static int calibrate_8974(struct tsens_priv *priv) { int base1 = 0, base2 = 0, i; @@ -361,6 +406,11 @@ static int calibrate_8974(struct tsens_priv *priv) int mode = 0; u32 *calib, *bkp; u32 calib_redun_sel; + int ret; + + ret = calibrate_8974_nvmem(priv); + if (ret == 0) + return 0; calib = (u32 *)qfprom_read(priv->dev, "calib"); if (IS_ERR(calib)) |