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i2c: rk: only rk29/rk30 need idle lock

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黄涛
2012-08-15 10:41:41 +08:00
parent c31596c7c9
commit bbc68b65d9
1 changed files with 8 additions and 0 deletions
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8
drivers/i2c/busses/i2c-rk29.c
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@@ -111,7 +111,9 @@ struct rk29_i2c_data {
#endif
};
#if defined(CONFIG_ARCH_RK29) || defined(CONFIG_ARCH_RK30)
static struct wake_lock idlelock; /* only for i2c0 */
#endif
static void rk29_set_ack(struct rk29_i2c_data *i2c)
{
@@ -558,8 +560,10 @@ static int rk29_i2c_xfer(struct i2c_adapter *adap,
i2c->udelay_time = RK29_UDELAY_TIME(i2c->scl_rate);
i2c->ack_timeout = RK29_I2C_ACK_TIMEOUT_COUNT * i2c->udelay_time;
#if defined(CONFIG_ARCH_RK29) || defined(CONFIG_ARCH_RK30)
if (adap->nr == 0)
wake_lock(&idlelock);
#endif
for (i = 0; i < num; i++)
{
@@ -572,8 +576,10 @@ static int rk29_i2c_xfer(struct i2c_adapter *adap,
}
}
#if defined(CONFIG_ARCH_RK29) || defined(CONFIG_ARCH_RK30)
if (adap->nr == 0)
wake_unlock(&idlelock);
#endif
/*
if( --retry && num < 0)
@@ -887,7 +893,9 @@ static struct platform_driver rk29_i2c_driver = {
static int __init rk29_i2c_adap_init(void)
{
#if defined(CONFIG_ARCH_RK29) || defined(CONFIG_ARCH_RK30)
wake_lock_init(&idlelock, WAKE_LOCK_IDLE, "i2c0");
#endif
return platform_driver_register(&rk29_i2c_driver);
}