diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-04-13 13:41:06 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-13 00:23:59 +0400 |
| commit | 4228716c87f7915410721952bad3e568fb5f2431 (patch) | |
| tree | f64f189525820271fdb66366677e945419378604 /arch/arm/mach-shmobile/setup-r8a7740.c | |
| parent | 9f6b78223b7b49bc06d2e84b15d48f02206ec3c3 (diff) | |
| download | linux-4228716c87f7915410721952bad3e568fb5f2431.tar.xz | |
ARM: mach-shmobile: r8a7740: cleanup I2C workaround method
Current workaround of I2C on r8a7740 used mdelay(),
but it was an overkill.
This patch cleans up the workaround delay.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7740.c')
| -rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7740.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c index 14edb5cffa7f..34a1548dbda6 100644 --- a/arch/arm/mach-shmobile/setup-r8a7740.c +++ b/arch/arm/mach-shmobile/setup-r8a7740.c @@ -350,19 +350,19 @@ static void r8a7740_i2c_workaround(struct platform_device *pdev) i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10); i2c_read(reg, ICSTART); /* dummy read */ - mdelay(100); + udelay(10); i2c_write(reg, ICCR, 0x01); - i2c_read(reg, ICCR); i2c_write(reg, ICSTART, 0x00); - i2c_read(reg, ICSTART); + + udelay(10); i2c_write(reg, ICCR, 0x10); - mdelay(100); + udelay(10); i2c_write(reg, ICCR, 0x00); - mdelay(100); + udelay(10); i2c_write(reg, ICCR, 0x10); - mdelay(100); + udelay(10); iounmap(reg); } |