max17042_battery: Add support for max17047/50 chip

max17047 is improved version of max17042 chip. It has few HW bug
fixes with minor changes in register set.

max17050 is same as max17047 chip except its silicon packging. So from
driver's point of view there is no difference btw max1047 and max1050.

This patch adds the support to dynamically detect the chip type and
adds steps to initialize the max17047 chip.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/power/max17042_battery.h b/include/linux/power/max17042_battery.h
index e01b167e66f0..89dd84f47c6e 100644
--- a/include/linux/power/max17042_battery.h
+++ b/include/linux/power/max17042_battery.h
@@ -116,6 +116,18 @@ enum max17042_register {
         MAX17042_VFSOC          = 0xFF,
 };
 
+/* Registers specific to max17047/50 */
+enum max17047_register {
+        MAX17047_QRTbl00        = 0x12,
+        MAX17047_FullSOCThr     = 0x13,
+        MAX17047_QRTbl10        = 0x22,
+        MAX17047_QRTbl20        = 0x32,
+        MAX17047_V_empty        = 0x3A,
+        MAX17047_QRTbl30        = 0x42,
+};
+
+enum max170xx_chip_type {MAX17042, MAX17047};
+
 /*
  * used for setting a register to a desired value
  * addr : address for a register
@@ -144,6 +156,7 @@ struct max17042_config_data {
         u16     shdntimer;      /* 0x03F */
 
         /* App data */
+        u16     full_soc_thresh;        /* 0x13 */
         u16     design_cap;     /* 0x18 */
         u16     ichgt_term;     /* 0x1E */
 
@@ -162,6 +175,10 @@ struct max17042_config_data {
         u16     lavg_empty;     /* 0x36 */
         u16     dqacc;          /* 0x45 */
         u16     dpacc;          /* 0x46 */
+        u16     qrtbl00;        /* 0x12 */
+        u16     qrtbl10;        /* 0x22 */
+        u16     qrtbl20;        /* 0x32 */
+        u16     qrtbl30;        /* 0x42 */
 
         /* Cell technology from power_supply.h */
         u16     cell_technology;