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ARM: mach-shmobile: r8a7740: cleanup I2C workaround method

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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>
This commit is contained in:
Kuninori Morimoto 2012-04-13 02:41:06 -07:00 committed by Rafael J. Wysocki
parent 9f6b78223b
commit 4228716c87
1 changed files with 6 additions and 6 deletions
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12
arch/arm/mach-shmobile/setup-r8a7740.c
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@ -350,19 +350,19 @@ static void r8a7740_i2c_workaround(struct platform_device *pdev)
i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10); i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10);
i2c_read(reg, ICSTART); /* dummy read */ i2c_read(reg, ICSTART); /* dummy read */
mdelay(100); udelay(10);
i2c_write(reg, ICCR, 0x01); i2c_write(reg, ICCR, 0x01);
i2c_read(reg, ICCR);
i2c_write(reg, ICSTART, 0x00); i2c_write(reg, ICSTART, 0x00);
i2c_read(reg, ICSTART);
udelay(10);
i2c_write(reg, ICCR, 0x10); i2c_write(reg, ICCR, 0x10);
mdelay(100); udelay(10);
i2c_write(reg, ICCR, 0x00); i2c_write(reg, ICCR, 0x00);
mdelay(100); udelay(10);
i2c_write(reg, ICCR, 0x10); i2c_write(reg, ICCR, 0x10);
mdelay(100); udelay(10);
iounmap(reg); iounmap(reg);
} }