From 079d8af24b948261e1dae5d7df6b31b7bf205cb4 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 12 Sep 2012 16:28:06 +0530 Subject: [PATCH] i2c: omap: bus: add a receiver flag that way we can ignore TX IRQs while in receiver mode and ignore RX IRQs while in transmitter mode. Signed-off-by: Felipe Balbi [Remove unnecessary braces] Signed-off-by: Shubhrajyoti D Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-omap.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 0da8169ca5b..3be147ab4eb 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -199,6 +199,7 @@ struct omap_i2c_dev { */ u8 rev; unsigned b_hw:1; /* bad h/w fixes */ + unsigned receiver:1; /* true when we're in receiver mode */ u16 iestate; /* Saved interrupt register */ u16 pscstate; u16 scllstate; @@ -492,6 +493,7 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adap, INIT_COMPLETION(dev->cmd_complete); dev->cmd_err = 0; + dev->receiver = !!(msg->flags & I2C_M_RD); w = OMAP_I2C_CON_EN | OMAP_I2C_CON_MST | OMAP_I2C_CON_STT; @@ -837,6 +839,12 @@ omap_i2c_isr(int this_irq, void *dev_id) stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG); stat &= bits; + /* If we're in receiver mode, ignore XDR/XRDY */ + if (dev->receiver) + stat &= ~(OMAP_I2C_STAT_XDR | OMAP_I2C_STAT_XRDY); + else + stat &= ~(OMAP_I2C_STAT_RDR | OMAP_I2C_STAT_RRDY); + if (!stat) { /* my work here is done */ return IRQ_HANDLED; -- 2.46.0