Converting uart driver to adapt to pm runtime API's.
Code re-org + cleanup.
Moving some functionality from serial.c to omap-serial.c
Changes involves:
================
1.) Cleaning up certain uart calls from sram_idle func.
2.) Removed all types of uart clock handling code from serial.c
3.) Using hwmod_mux API enable wakeup capability for uart pad during
hwmod_idle state i.e., when uart clocks are disabled we can enable
io-pad wakeup capability for uart if mux_data is available for
given uart. Also during during resume from idle call to uart we need
to enable clocks back conditionally and this can be done only when io-pad
wakeup event bit is set for uart_rx pad. So we need a hwmod API
which can probe the uart pad and let us know whether a uart wakeup
happened. So omap_hmwod_pad_wakeup_status API is added to meet this
requirement.
3.) Adapted omap-serial driver to use runtime API's.
4.) Modify serial_init calls to accept certain uart parameters from board file.
5.) using prepare and resume_call to disable/enable uart_port.
Reference to discussion why we need to use prepare and resume hooks.
http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg52707.html
http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg53209.html
Patch series is based on 3.1.0-rc4 + omap_device fixes.
>From Kevin's tree.
git://gitorious.org/khilman/linux-omap-pm.git for_3.2/omap_device
This Patch series based on Kevin's tree is hosted at:
git://gitorious.org/runtime_3-0/runtime_3-0.git rc4_uart_od
Testing updates:
----------------
3430SDP:
retention, off_mode, system_wide suspend is tested.
(earlyprintk & no_console_suspend checked)
OMAP3630 - Zoom3:
pm-retention checked with quart/omap-uart3
[Also tested with uart3 as console uart and pm-ret checked]
OMAP4430-SDP: Boot tested.
OMAP2420/2430SDP: Boot tested.
Govindraj.R (10):
OMAP2+: hwmod: Add API to enable IO ring wakeup.
OMAP2+: hwmod: Add API to check IO PAD wakeup status
OMAP2+: UART: cleanup + remove certain uart calls from pm code
OMAP2+: UART: Remove uart clock handling code from serial.c
OMAP2+: Serial: Add default mux for all uarts.
Serial: OMAP: Store certain reg values to port structure
Serial: OMAP: Add runtime pm support for omap-serial driver
Serial: OMAP2+: Move erratum handling from serial.c
OMAP2+: Serial: Use prepare and resume calls to gate uart clocks
OMAP: Serial: Allow UART parameters to be configured from board file.
Jon Hunter (1):
Serial: OMAP2+: Make the RX_TIMEOUT for DMA configurable for each
UART
arch/arm/mach-omap2/board-3430sdp.c | 100 +---
arch/arm/mach-omap2/board-4430sdp.c | 8 +-
arch/arm/mach-omap2/board-n8x0.c | 6 +-
arch/arm/mach-omap2/board-omap4panda.c | 8 +-
arch/arm/mach-omap2/mux.c | 30 +
arch/arm/mach-omap2/mux.h | 13 +
arch/arm/mach-omap2/omap_hwmod.c | 66 ++
arch/arm/mach-omap2/pm24xx.c | 11 +-
arch/arm/mach-omap2/pm34xx.c | 22 +-
arch/arm/mach-omap2/serial.c | 922 +++++++------------------
arch/arm/plat-omap/include/plat/omap-serial.h | 34 +-
arch/arm/plat-omap/include/plat/omap_hwmod.h | 1 +
arch/arm/plat-omap/include/plat/serial.h | 13 +-
drivers/tty/serial/omap-serial.c | 349 ++++++++--
14 files changed, 717 insertions(+), 866 deletions(-)
--
1.7.4.1
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