diff options
| author | Nicolas Pitre <npitre@baylibre.com> | 2024-04-02 06:25:44 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2024-04-23 13:40:30 +0300 |
| commit | 684cbb49f9ceed6be0f33dac9d62089e7cd1c032 (patch) | |
| tree | d437d1d56f08ba6ae484be530dd390912048f783 /drivers/thermal/mediatek | |
| parent | a4c1ab2f4c6c94edfc6481edf37e141079e24f1d (diff) | |
| download | linux-684cbb49f9ceed6be0f33dac9d62089e7cd1c032.tar.xz | |
thermal/drivers/mediatek/lvts_thermal: Provision for gt variable location
The golden temperature calibration value in nvram is not always the
3rd byte. A future commit will prove this assumption wrong.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-11-nico@fluxnic.net
Diffstat (limited to 'drivers/thermal/mediatek')
| -rw-r--r-- | drivers/thermal/mediatek/lvts_thermal.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c index 6f711aec0d0f..34f5a8150430 100644 --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -116,6 +116,7 @@ struct lvts_data { int num_lvts_ctrl; int temp_factor; int temp_offset; + int gt_calib_bit_offset; }; struct lvts_sensor { @@ -745,20 +746,21 @@ static int lvts_calibration_read(struct device *dev, struct lvts_domain *lvts_td return 0; } -static int lvts_golden_temp_init(struct device *dev, u8 *calib, int temp_offset) +static int lvts_golden_temp_init(struct device *dev, u8 *calib, + const struct lvts_data *lvts_data) { u32 gt; /* - * The golden temp information is contained in the 4th byte (index = 3) - * of efuse data. + * The golden temp information is contained in the first 32-bit + * word of efuse data at a specific bit offset. */ - gt = calib[3]; + gt = (((u32 *)calib)[0] >> lvts_data->gt_calib_bit_offset) & 0xff; if (gt && gt < LVTS_GOLDEN_TEMP_MAX) golden_temp = gt; - golden_temp_offset = golden_temp * 500 + temp_offset; + golden_temp_offset = golden_temp * 500 + lvts_data->temp_offset; return 0; } @@ -777,7 +779,7 @@ static int lvts_ctrl_init(struct device *dev, struct lvts_domain *lvts_td, if (ret) return ret; - ret = lvts_golden_temp_init(dev, lvts_td->calib, lvts_data->temp_offset); + ret = lvts_golden_temp_init(dev, lvts_td->calib, lvts_data); if (ret) return ret; @@ -1600,6 +1602,7 @@ static const struct lvts_data mt7988_lvts_ap_data = { .num_lvts_ctrl = ARRAY_SIZE(mt7988_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT7988, .temp_offset = LVTS_COEFF_B_MT7988, + .gt_calib_bit_offset = 24, }; static const struct lvts_data mt8186_lvts_data = { @@ -1607,6 +1610,7 @@ static const struct lvts_data mt8186_lvts_data = { .num_lvts_ctrl = ARRAY_SIZE(mt8186_lvts_data_ctrl), .temp_factor = LVTS_COEFF_A_MT7988, .temp_offset = LVTS_COEFF_B_MT7988, + .gt_calib_bit_offset = 24, }; static const struct lvts_data mt8192_lvts_mcu_data = { @@ -1614,6 +1618,7 @@ static const struct lvts_data mt8192_lvts_mcu_data = { .num_lvts_ctrl = ARRAY_SIZE(mt8192_lvts_mcu_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, + .gt_calib_bit_offset = 24, }; static const struct lvts_data mt8192_lvts_ap_data = { @@ -1621,6 +1626,7 @@ static const struct lvts_data mt8192_lvts_ap_data = { .num_lvts_ctrl = ARRAY_SIZE(mt8192_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, + .gt_calib_bit_offset = 24, }; static const struct lvts_data mt8195_lvts_mcu_data = { @@ -1628,6 +1634,7 @@ static const struct lvts_data mt8195_lvts_mcu_data = { .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_mcu_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, + .gt_calib_bit_offset = 24, }; static const struct lvts_data mt8195_lvts_ap_data = { @@ -1635,6 +1642,7 @@ static const struct lvts_data mt8195_lvts_ap_data = { .num_lvts_ctrl = ARRAY_SIZE(mt8195_lvts_ap_data_ctrl), .temp_factor = LVTS_COEFF_A_MT8195, .temp_offset = LVTS_COEFF_B_MT8195, + .gt_calib_bit_offset = 24, }; static const struct of_device_id lvts_of_match[] = { |