From 6483c1b5e1a6e3489640a1376e951395982e9615 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 5 Jun 2009 18:31:01 +0200 Subject: mfd: asic3: add asic3_set_register common operation Used to configure single bits of the SDHWCTRL_SDCONF and EXTCF_RESET/SELECT registers needed for DS1WM, MMC/SDIO and PCMCIA functionality. Signed-off-by: Philipp Zabel Signed-off-by: Samuel Ortiz --- drivers/mfd/asic3.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers') diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index 9e485459f63..ad3c5913599 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -52,6 +52,21 @@ static inline u32 asic3_read_register(struct asic3 *asic, (reg >> asic->bus_shift)); } +void asic3_set_register(struct asic3 *asic, u32 reg, u32 bits, bool set) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&asic->lock, flags); + val = asic3_read_register(asic, reg); + if (set) + val |= bits; + else + val &= ~bits; + asic3_write_register(asic, reg, val); + spin_unlock_irqrestore(&asic->lock, flags); +} + /* IRQs */ #define MAX_ASIC_ISR_LOOPS 20 #define ASIC3_GPIO_BASE_INCR \ -- cgit v1.2.3