power: pm8921-bms: Update the FCC learning algorithm
1. Add configurable parameters to
- enable/disable fcc learning
- minimum soc to start FCC learning
- minimum ocv (pc) to start FCC learning
- minimum cycles to update fcc vs temp. table
2. New FCC is calculated using the cc count-
FCC_NEW = (cc_end - cc_start) / (soc2 - soc1)
cc_end = CC count when charing ends
cc_start = CC count when charging starts
soc1, soc2 = starting and ending SOC_rbatt value
3. Add a new sysfs entries to update the learnt fcc values
to userspace. These values are restored back on
reboot.
CRs-Fixed: 417288
Change-Id: I0dc713d59ef9c45f96b9f0b5844252758bd09320
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8064-pmic.c b/arch/arm/mach-msm/board-8064-pmic.c
index 2d06031..90c612e 100644
--- a/arch/arm/mach-msm/board-8064-pmic.c
+++ b/arch/arm/mach-msm/board-8064-pmic.c
@@ -451,6 +451,10 @@
.high_ocv_correction_limit_uv = 50,
.low_ocv_correction_limit_uv = 100,
.hold_soc_est = 3,
+ .enable_fcc_learning = 1,
+ .min_fcc_learning_soc = 20,
+ .min_fcc_ocv_pc = 30,
+ .max_fcc_learning_samples = 5,
};
static struct pm8921_platform_data
diff --git a/arch/arm/mach-msm/board-8930-pmic.c b/arch/arm/mach-msm/board-8930-pmic.c
index 4f09a51..2f3b6a9 100644
--- a/arch/arm/mach-msm/board-8930-pmic.c
+++ b/arch/arm/mach-msm/board-8930-pmic.c
@@ -487,6 +487,10 @@
.high_ocv_correction_limit_uv = 50,
.low_ocv_correction_limit_uv = 100,
.hold_soc_est = 3,
+ .enable_fcc_learning = 1,
+ .min_fcc_learning_soc = 20,
+ .min_fcc_ocv_pc = 30,
+ .max_fcc_learning_samples = 5,
};
static struct pm8038_platform_data pm8038_platform_data __devinitdata = {
diff --git a/arch/arm/mach-msm/board-8960-pmic.c b/arch/arm/mach-msm/board-8960-pmic.c
index c87d966..8e758bf 100644
--- a/arch/arm/mach-msm/board-8960-pmic.c
+++ b/arch/arm/mach-msm/board-8960-pmic.c
@@ -438,6 +438,10 @@
.high_ocv_correction_limit_uv = 50,
.low_ocv_correction_limit_uv = 100,
.hold_soc_est = 3,
+ .enable_fcc_learning = 1,
+ .min_fcc_learning_soc = 20,
+ .min_fcc_ocv_pc = 30,
+ .max_fcc_learning_samples = 5,
};
#define PM8921_LC_LED_MAX_CURRENT 4 /* I = 4mA */