From: "Rajanikanth H.V" rajanikanth.hv@linaro.org
This patch-set adds device tree binding for ab8500 battery-managed devices. Removes the redundant platform structure maintained across bm devices and implements common DT probe routine across all the modules.
Test status: a) Tested across 'legacy platform data' and DT binding support a.1) ab8500_charger driver fails to get regulator in the legacy platform mode. b) Interrupt numbers assigned differs between legacy and FDT mode. (a) Legacy platform_data Mode: root@ME:/ cat /proc/interrupts CPU0 CPU1 483: 0 0 ab8500 ab8500-ponkey-dbf 484: 0 0 ab8500 ab8500-ponkey-dbr 485: 0 0 ab8500 BATT_OVV 494: 0 1 ab8500 495: 0 0 ab8500 ab8500-rtc 501: 0 13 ab8500 NCONV_ACCU 503: 7 22 ab8500 CCEOC 504: 0 1 ab8500 CC_INT_CALIB 505: 0 0 ab8500 LOW_BAT_F 516: 0 34 ab8500 ab8500-gpadc 556: 0 0 ab8500 usb-link-status
(b) FDT Mode: root@ME:/ cat /proc/interrupts CPU0 CPU1 6: 0 0 ab8500 ab8500-ponkey-dbf 7: 0 0 ab8500 ab8500-ponkey-dbr 8: 0 0 ab8500 BATT_OVV 162: 0 7 ab8500 ab8500-gpadc 163: 0 1 ab8500 164: 0 0 ab8500 ab8500-rtc 484: 0 0 ab8500 usb-link-status 499: 0 4 ab8500 NCONV_ACCU 500: 0 0 ab8500 LOW_BAT_F 502: 0 1 ab8500 CC_INT_CALIB 503: 0 6 ab8500 CCEOC
c) Event handlers across bm-modules have been verified only during 'battery discharge process' as 'battery charging process' depends on ab8500-usb code
d) observed nested IRQ issue, log below:
root@ME:/ ------------[ cut here ]------------ WARNING: at /home/rhv00000/linaro_work/linux/kernel/irq/manage.c:635 irq_nested_primary_handler+0x20/0x28() Primary handler called for nested irq 193 Modules linked in: [<c0014884>] (unwind_backtrace+0x0/0xf8) from [<c001cbb4>] (warn_slowpath_common+0x4c/0x64) [<c001cbb4>] (warn_slowpath_common+0x4c/0x64) from [<c001cc60>] (warn_slowpath_fmt+0x30/0x40) [<c001cc60>] (warn_slowpath_fmt+0x30/0x40) from [<c0060f00>] (irq_nested_primary_handler+0x20/0x28) [<c0060f00>] (irq_nested_primary_handler+0x20/0x28) from [<c0060b80>] (handle_irq_event_percpu+0x50/0x194) [<c0060b80>] (handle_irq_event_percpu+0x50/0x194) from [<c0060d00>] (handle_irq_event+0x3c/0x5c) [<c0060d00>] (handle_irq_event+0x3c/0x5c) from [<c0063034>] (handle_simple_irq+0x8c/0xc4) [<c0063034>] (handle_simple_irq+0x8c/0xc4) from [<c0062d84>] (resend_irqs+0x40/0x68) [<c0062d84>] (resend_irqs+0x40/0x68) from [<c00236d8>] (tasklet_action+0x84/0x120) [<c00236d8>] (tasklet_action+0x84/0x120) from [<c0023ae4>] (__do_softirq+0xd8/0x198) [<c0023ae4>] (__do_softirq+0xd8/0x198) from [<c0023ed4>] (irq_exit+0x90/0x98) [<c0023ed4>] (irq_exit+0x90/0x98) from [<c000f2cc>] (handle_IRQ+0x50/0xb0) [<c000f2cc>] (handle_IRQ+0x50/0xb0) from [<c00084f0>] (gic_handle_irq+0x28/0x5c) [<c00084f0>] (gic_handle_irq+0x28/0x5c) from [<c000df80>] (__irq_svc+0x40/0x70) Exception stack(0xebc5dea8 to 0xebc5def0) dea0: c0f45340 ebc4cf00 00000000 1f321f32 eb196600 ebc4cf00 dec0: c05a3340 00000002 ebc4c600 00000000 eb1b2c00 ebc5df0c 00000000 ebc5def0 dee0: c0040c7c c02ca5ec 60000013 ffffffff [<c000df80>] (__irq_svc+0x40/0x70) from [<c02ca5ec>] (_raw_spin_unlock_irq+0x28/0x50) [<c02ca5ec>] (_raw_spin_unlock_irq+0x28/0x50) from [<c0040c7c>] (finish_task_switch+0x28/0xf0) [<c0040c7c>] (finish_task_switch+0x28/0xf0) from [<c02c93f0>] (__schedule+0x254/0x548) [<c02c93f0>] (__schedule+0x254/0x548) from [<c0040088>] (smpboot_thread_fn+0x11c/0x250) [<c0040088>] (smpboot_thread_fn+0x11c/0x250) from [<c0037fc8>] (kthread+0xa4/0xb0) [<c0037fc8>] (kthread+0xa4/0xb0) from [<c000e418>] (ret_from_fork+0x14/0x3c) ---[ end trace 1b75b31a2719ed1e ]---
Rajanikanth H.V (4): mfd: ab8500: add devicetree support for fuelgauge mfd: ab8500: add devicetree support for btemp mfd: ab8500: add devicetree support for charger mfd: ab8500: add devicetree support for chargalg
Documentation/devicetree/bindings/mfd/ab8500.txt | 27 +- .../bindings/power_supply/ab8500/btemp.txt | 16 + .../bindings/power_supply/ab8500/chargalg.txt | 16 + .../bindings/power_supply/ab8500/charger.txt | 25 + .../devicetree/bindings/power_supply/ab8500/fg.txt | 58 +++ arch/arm/boot/dts/dbx5x0.dtsi | 26 + drivers/mfd/ab8500-core.c | 20 + drivers/power/Kconfig | 6 - drivers/power/Makefile | 2 +- drivers/power/ab8500_bmdata.c | 514 ++++++++++++++++++++ drivers/power/ab8500_btemp.c | 75 +-- drivers/power/ab8500_charger.c | 83 ++-- drivers/power/ab8500_fg.c | 81 +-- drivers/power/abx500_chargalg.c | 57 ++- include/linux/mfd/abx500.h | 34 +- 15 files changed, 879 insertions(+), 161 deletions(-) create mode 100644 Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt create mode 100644 Documentation/devicetree/bindings/power_supply/ab8500/chargalg.txt create mode 100644 Documentation/devicetree/bindings/power_supply/ab8500/charger.txt create mode 100644 Documentation/devicetree/bindings/power_supply/ab8500/fg.txt create mode 100644 drivers/power/ab8500_bmdata.c