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6c2bbf2914
As a common charger driver mmi_charger inherits Motorola legacy battery
charging features, including Demo charging, Step charging, Flash Fast
charging, and common features for factory test support.
More importantly, it provides a cross-platform solution to support
various battery charging design, not only Qualcomm SoC but also Samsung,
MTK, even remote system over network, and especially suite multiple
battery packs and multiple charger ICs in one system.
To achieve this goal, besides mmi_charger driver, there need a low level
charger driver for each battery charging solution(a couple of charger IC
& battery pack) to register to mmi_charger driver with implementation of
required interfaces depending on their own HW design.
With mmi_charger driver, Motorola common features have been stripped
from the HW dependent charger drivers(older Motorola charger drivers),
in which all the common features have to be implemented by each driver
of its own. So a low level charger driver can focus on HW specific
features and function development.
Motorola charger driver architecture:
----------------------------------------------------------------------
Userspace Common Interfaces for Charging Features and Factory Test
----------------------------------------------------------------------
Kernel mmi_charger (Motorola demo, step, flash-fast charging,
/ | \ factory and debugging interfaces)
/ | \
qti_glink_charger x_charger N_charger (basic charging functions HW
| | | specific factory debugging interfaces)
| | |
------------glink----i2c------spmi------------------------------------
| | |
| | |
ADSP i2c chip PMIC
Benefit from this new Motorola charger driver design:
1. Easy upgrade, migration, and maintenance, as common driver is
cross-platform and HW independent.
2. Reduce develop workload, as developers can pay more energy and
efforts on HW or platform specific business logic.
3. Easy to support complex battery charging solution, as it can support
N couples of charger IC & battery pack in one system at the same time
theoretically.
Change-Id: Ie44a22a2c65ea01fd3930879aeb9aae1c44341e0
Signed-off-by: yanyh2 <yanyh2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1502333
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Wentao Xu <xuwt2@motorola.com>
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
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| Documentation/devicetree/bindings | ||
| drivers | ||
| fs/exfat | ||
| include | ||
| sound/soc/codecs | ||
| AndroidKernelModule.mk | ||