Messages in this thread Patch in this message | | | Date | Wed, 2 Nov 2005 00:21:22 +0100 | From | Pavel Machek <> | Subject | [patch] collie: enable frontlight |
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Enable frontlight on collie, so that display can be actually read indoors.
Signed-off-by: Pavel Machek <pavel@suse.cz>
--- commit dc507abbd6658927bdef7a521c4aa16c511ec62f tree 666babf57b70cdf7fbac66c96defc9be4eb2518a parent 8d04f63101774a56e80ef76b4d40ab782541dd94 author <pavel@amd.(none)> Wed, 02 Nov 2005 00:20:26 +0100 committer <pavel@amd.(none)> Wed, 02 Nov 2005 00:20:26 +0100
arch/arm/common/locomo.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c --- a/arch/arm/common/locomo.c +++ b/arch/arm/common/locomo.c @@ -631,6 +631,23 @@ static int locomo_resume(struct device * } #endif +static spinlock_t fl_lock = SPIN_LOCK_UNLOCKED; + +#define LCM_ALC_EN 0x8000 + +void frontlight_set(struct locomo *lchip, int duty, int vr, int bpwf) +{ + unsigned long flags; + + spin_lock_irqsave(&fl_lock, flags); + locomo_writel(bpwf, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); + udelay(100); + locomo_writel(duty, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); + locomo_writel(bpwf | LCM_ALC_EN, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); + spin_unlock_irqrestore(&fl_lock, flags); +} + + /** * locomo_probe - probe for a single LoCoMo chip. * @phys_addr: physical address of device. @@ -690,6 +707,11 @@ __locomo_probe(struct device *me, struct /* FrontLight */ locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); + + /* Same constants can be used for collie and poodle + (depending on CONFIG options in original sharp code)? */ + frontlight_set(lchip, 163, 0, 148); + /* Longtime timer */ locomo_writel(0, lchip->base + LOCOMO_LTINT); /* SPI */ -- Thanks, Sharp! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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