Re: [PATCH 2/7] OMAP2+: mux: Enable wakeup for wakeup enable requested pads
From: Varadarajan, Charulatha <hidden>
Date: 2011-03-02 04:49:58
Also in:
linux-arm-kernel, linux-omap
Govind, Couple of minor comments. On Mon, Feb 28, 2011 at 20:09, Govindraj.R [off-list ref] wrote:
For device pads which have OMAP_DEVICE_PAD_WAKEUP set (which means they are wakeup capable) enable the IO-daisy wakeup capability. During re-muxing avoid direct write with val as this can disturb if any mux done at bootloader level so read the pad then write back. Also add a api to fetch the wake-up status bit is set for given omap-hwmod
%s/a api/an API/
quoted hunk ↗ jump to hunk
device using available mux info which is added during omap_hwmod_mux_init. Wakeup status bit is needed for uart_resume_idle call from sram_idle path based on wake-up event has occurred for given uart we can enable clocks back. Signed-off-by: Rajendra Nayak <redacted> Signed-off-by: Govindraj.R <redacted> --- arch/arm/mach-omap2/mux.c | 23 +++++++++++++++++++++++ arch/arm/mach-omap2/mux.h | 13 +++++++++++++ arch/arm/mach-omap2/omap_hwmod.c | 13 +++++++++++++ arch/arm/plat-omap/include/plat/omap_hwmod.h | 1 + 4 files changed, 50 insertions(+), 0 deletions(-)diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 98148b6..5338b93 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c@@ -317,6 +317,24 @@ err1:return NULL; } +/* Gets the wakeup status of given pad from omap-hwmod */ +int omap_hwmod_mux_wakeup(struct omap_hwmod_mux_info *hmux) +{ + int i; + unsigned int val = -EINVAL; + + for (i = 0; i < hmux->nr_pads; i++) { + struct omap_device_pad *pad = &hmux->pads[i]; + + val = omap_mux_read(pad->partition, pad->mux->reg_offset); + } + + if (val > 0 && val & OMAP_WAKEUP_EVENT) + return 1; + else
No need of else here.
+ return 0; +} +
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