diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-omap.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-omap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 4aeebad8ec9..40a1e4bc92f 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -191,6 +191,8 @@ static void omap_i2c_put_clocks(struct omap_i2c_dev *dev) static void omap_i2c_unidle(struct omap_i2c_dev *dev) { + WARN_ON(!dev->idle); + if (dev->iclk != NULL) clk_enable(dev->iclk); clk_enable(dev->fclk); @@ -203,6 +205,8 @@ static void omap_i2c_idle(struct omap_i2c_dev *dev) { u16 iv; + WARN_ON(dev->idle); + dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG); omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0); if (dev->rev1) { @@ -740,6 +744,7 @@ omap_i2c_probe(struct platform_device *pdev) speed = 100; /* Defualt speed */ dev->speed = speed; + dev->idle = 1; dev->dev = &pdev->dev; dev->irq = irq->start; dev->base = ioremap(mem->start, mem->end - mem->start + 1); @@ -788,6 +793,8 @@ omap_i2c_probe(struct platform_device *pdev) dev_info(dev->dev, "bus %d rev%d.%d at %d kHz\n", pdev->id, r >> 4, r & 0xf, dev->speed); + omap_i2c_idle(dev); + adap = &dev->adapter; i2c_set_adapdata(adap, dev); adap->owner = THIS_MODULE; @@ -804,8 +811,6 @@ omap_i2c_probe(struct platform_device *pdev) goto err_free_irq; } - omap_i2c_idle(dev); - return 0; err_free_irq: |