sysmo-bts
/
u-boot
9
0
Fork 0
Code Pull Requests Releases Activity

i2c: sh_i2c: use setbits/clrbits macro 

Use setbits/clrbits macro when read-modify-write register.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
This commit is contained in:
Tetsuyuki Kobayashi 2012-09-13 19:08:05 +00:00 committed by Heiko Schocher
parent 650f95b0c7
commit f539094f48
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/i2c/sh_i2c.c
View File

@ -98,8 +98,8 @@ static int i2c_set_addr(struct sh_i2c *base, u8 id, u8 reg, int stop)
{
u8 icic = SH_IC_TACK;
writeb(readb(&base->iccr) & ~SH_I2C_ICCR_ICE, &base->iccr);
writeb(readb(&base->iccr) | SH_I2C_ICCR_ICE, &base->iccr);
clrbits_8(&base->iccr, SH_I2C_ICCR_ICE);
setbits_8(&base->iccr, SH_I2C_ICCR_ICE);
writeb(iccl & 0xff, &base->iccl);
writeb(icch & 0xff, &base->icch);
@ -114,7 +114,7 @@ static int i2c_set_addr(struct sh_i2c *base, u8 id, u8 reg, int stop)
writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS|SH_I2C_ICCR_BUSY), &base->iccr);
irq_dte(base);
writeb(readb(&base->icsr) & ~SH_IC_TACK, &base->icsr);
clrbits_8(&base->icsr, SH_IC_TACK);
writeb(id << 1, &base->icdr);
if (irq_dte_with_tack(base) != 0)
return -1;
@ -131,7 +131,7 @@ static int i2c_set_addr(struct sh_i2c *base, u8 id, u8 reg, int stop)
static void i2c_finish(struct sh_i2c *base)
{
writeb(0, &base->icsr);
writeb(readb(&base->iccr) & ~SH_I2C_ICCR_ICE, &base->iccr);
clrbits_8(&base->iccr, SH_I2C_ICCR_ICE);
}
static int i2c_raw_write(struct sh_i2c *base, u8 id, u8 reg, u8 val)