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drivers: thermal: bcl: Update the threshold conversion

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Ibat and vbat threshold registers were bit shifted in earlier BCL
peripheral and starting PMIC7, the bit shift is not there. So remove
the ADC to ibat/vbat and vice versa conversion to accommodate this.

Change-Id: I45c3b389925c9f6853d14cd8d7aaee3de5310bdf
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
This commit is contained in:
Ram Chandrasekar 2020-06-26 16:44:57 -07:00
parent e0214e2c7f
commit 6540ba7ec9
1 changed files with 17 additions and 5 deletions
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22
drivers/thermal/qcom/bcl_pmic5.c
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@ -40,6 +40,10 @@
#define BCL_IRQ_L1 0x2
#define BCL_IRQ_L2 0x4
/*
* 49827 = 64.879uV (one bit value) * 3 (voltage divider)
* * 256 (8 bit shift for MSB)
*/
#define BCL_VBAT_SCALING_UV 49827
#define BCL_VBAT_NO_READING 127
#define BCL_VBAT_BASE_MV 2000
@ -97,6 +101,7 @@ struct bcl_device {
static struct bcl_device *bcl_devices[MAX_PERPH_COUNT];
static int bcl_device_ct;
static bool ibat_use_qg_adc;
static bool no_bit_shift;
static int bcl_read_register(struct bcl_device *bcl_perph, int16_t reg_offset,
unsigned int *data)
@ -147,10 +152,13 @@ static int bcl_write_register(struct bcl_device *bcl_perph,
static void convert_adc_to_vbat_thresh_val(int *val)
{
/*
* Threshold register is bit shifted from ADC MSB.
* So the scaling factor is half.
* Threshold register can be bit shifted from ADC MSB.
* So the scaling factor is half in those cases.
*/
*val = (*val * BCL_VBAT_SCALING_UV) / 2000;
if (no_bit_shift)
*val = (*val * BCL_VBAT_SCALING_UV) / 1000;
else
*val = (*val * BCL_VBAT_SCALING_UV) / 2000;
}
static void convert_adc_to_vbat_val(int *val)
@ -161,11 +169,13 @@ static void convert_adc_to_vbat_val(int *val)
static void convert_ibat_to_adc_val(int *val)
{
/*
* Threshold register is bit shifted from ADC MSB.
* So the scaling factor is half.
* Threshold register can be bit shifted from ADC MSB.
* So the scaling factor is half in those cases.
*/
if (ibat_use_qg_adc)
*val = (int)div_s64(*val * 2000 * 2, BCL_IBAT_SCALING_UA);
else if (no_bit_shift)
*val = (int)div_s64(*val * 1000, BCL_IBAT_SCALING_UA);
else
*val = (int)div_s64(*val * 2000, BCL_IBAT_SCALING_UA);
@ -464,6 +474,8 @@ static int bcl_get_devicetree_data(struct platform_device *pdev,
ibat_use_qg_adc = of_property_read_bool(dev_node,
"qcom,ibat-use-qg-adc-5a");
no_bit_shift = of_property_read_bool(dev_node,
"qcom,pmic7-threshold");
return ret;
}