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mfd: asic3: add asic3_set_register common operation

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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 <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Philipp Zabel 2009-06-05 18:31:01 +02:00 committed by Samuel Ortiz
parent 9e5aca58c2
commit 6483c1b5e1
2 changed files with 20 additions and 5 deletions
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15
drivers/mfd/asic3.c
View file

@ -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 \

10
include/linux/mfd/asic3.h
View file

@ -227,8 +227,8 @@ struct asic3_platform_data {
/* Basic control of the SD ASIC */
#define ASIC3_SDHWCTRL_Base 0x0E00
#define ASIC3_SDHWCTRL_SDConf 0x00
#define ASIC3_SDHWCTRL_BASE 0x0E00
#define ASIC3_SDHWCTRL_SDCONF 0x00
#define ASIC3_SDHWCTRL_SUSPEND (1 << 0) /* 1=suspend all SD operations */
#define ASIC3_SDHWCTRL_CLKSEL (1 << 1) /* 1=SDICK, 0=HCLK */
@ -242,10 +242,10 @@ struct asic3_platform_data {
/* SD card power supply ctrl 1=enable */
#define ASIC3_SDHWCTRL_SDPWR (1 << 6)
#define ASIC3_EXTCF_Base 0x1100
#define ASIC3_EXTCF_BASE 0x1100
#define ASIC3_EXTCF_Select 0x00
#define ASIC3_EXTCF_Reset 0x04
#define ASIC3_EXTCF_SELECT 0x00
#define ASIC3_EXTCF_RESET 0x04
#define ASIC3_EXTCF_SMOD0 (1 << 0) /* slot number of mode 0 */
#define ASIC3_EXTCF_SMOD1 (1 << 1) /* slot number of mode 1 */