From 4228716c87f7915410721952bad3e568fb5f2431 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Fri, 13 Apr 2012 02:41:06 -0700 Subject: [PATCH] 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 Tested-by: Simon Horman Acked-by: Magnus Damm Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/setup-r8a7740.c | 12 ++++++------ 1 file 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); } -- 2.34.1