diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-s3c2410.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index f6b880ba1932..216fea12e2e9 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -42,9 +42,48 @@ #include <asm/irq.h> -#include <plat/regs-iic.h> #include <linux/platform_data/i2c-s3c2410.h> +/* see s3c2410x user guide, v1.1, section 9 (p447) for more info */ + +#define S3C2410_IICREG(x) (x) + +#define S3C2410_IICCON S3C2410_IICREG(0x00) +#define S3C2410_IICSTAT S3C2410_IICREG(0x04) +#define S3C2410_IICADD S3C2410_IICREG(0x08) +#define S3C2410_IICDS S3C2410_IICREG(0x0C) +#define S3C2440_IICLC S3C2410_IICREG(0x10) + +#define S3C2410_IICCON_ACKEN (1<<7) +#define S3C2410_IICCON_TXDIV_16 (0<<6) +#define S3C2410_IICCON_TXDIV_512 (1<<6) +#define S3C2410_IICCON_IRQEN (1<<5) +#define S3C2410_IICCON_IRQPEND (1<<4) +#define S3C2410_IICCON_SCALE(x) ((x)&15) +#define S3C2410_IICCON_SCALEMASK (0xf) + +#define S3C2410_IICSTAT_MASTER_RX (2<<6) +#define S3C2410_IICSTAT_MASTER_TX (3<<6) +#define S3C2410_IICSTAT_SLAVE_RX (0<<6) +#define S3C2410_IICSTAT_SLAVE_TX (1<<6) +#define S3C2410_IICSTAT_MODEMASK (3<<6) + +#define S3C2410_IICSTAT_START (1<<5) +#define S3C2410_IICSTAT_BUSBUSY (1<<5) +#define S3C2410_IICSTAT_TXRXEN (1<<4) +#define S3C2410_IICSTAT_ARBITR (1<<3) +#define S3C2410_IICSTAT_ASSLAVE (1<<2) +#define S3C2410_IICSTAT_ADDR0 (1<<1) +#define S3C2410_IICSTAT_LASTBIT (1<<0) + +#define S3C2410_IICLC_SDA_DELAY0 (0 << 0) +#define S3C2410_IICLC_SDA_DELAY5 (1 << 0) +#define S3C2410_IICLC_SDA_DELAY10 (2 << 0) +#define S3C2410_IICLC_SDA_DELAY15 (3 << 0) +#define S3C2410_IICLC_SDA_DELAY_MASK (3 << 0) + +#define S3C2410_IICLC_FILTER_ON (1<<2) + /* Treat S3C2410 as baseline hardware, anything else is supported via quirks */ #define QUIRK_S3C2440 (1 << 0) #define QUIRK_HDMIPHY (1 << 1) |