i2c: adapter: register it's own device

so we can show the this of i2c busses
set the bus device as parent of all devices.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 46 insertions, 31 deletions

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index a1012a784e..68348eb159 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -154,7 +154,7 @@ static int i2c_fsl_bus_busy(struct i2c_adapter *adapter, int for_busy)
 		if (!for_busy && !(temp & I2SR_IBB))
 			break;
 		if (is_timeout(start, 500 * MSECOND)) {
-			dev_err(adapter->dev,
+			dev_err(&adapter->dev,
 				 "<%s> timeout waiting for I2C bus %s\n",
 				 __func__,for_busy ? "busy" : "not busy");
 			return -EIO;
@@ -177,7 +177,7 @@ static int i2c_fsl_trx_complete(struct i2c_adapter *adapter)
 			break;
 
 		if (is_timeout(start, 100 * MSECOND)) {
-			dev_err(adapter->dev, "<%s> TXR timeout\n", __func__);
+			dev_err(&adapter->dev, "<%s> TXR timeout\n", __func__);
 			return -EIO;
 		}
 	}
@@ -199,7 +199,7 @@ static int i2c_fsl_acked(struct i2c_adapter *adapter)
 			break;
 
 		if (is_timeout(start, MSECOND)) {
-			dev_dbg(adapter->dev, "<%s> No ACK\n", __func__);
+			dev_dbg(&adapter->dev, "<%s> No ACK\n", __func__);
 			return -EIO;
 		}
 	}
@@ -296,7 +296,7 @@ static void i2c_fsl_set_clk(struct fsl_i2c_struct *i2c_fsl,
 	 * Translate to dfsr = 5 * Frequency / 100,000,000
 	 */
 	dfsr = (5 * (i2c_clk / 1000)) / 100000;
-	dev_dbg(i2c_fsl->adapter.dev,
+	dev_dbg(&i2c_fsl->adapter.dev,
 		"<%s> requested speed:%d, i2c_clk:%d\n", __func__,
 		rate, i2c_clk);
 	if (!dfsr)
@@ -315,12 +315,12 @@ static void i2c_fsl_set_clk(struct fsl_i2c_struct *i2c_fsl,
 				bin_ga = (ga & 0x3) | ((ga & 0x4) << 3);
 				fdr = bin_gb | bin_ga;
 				rate = i2c_clk / est_div;
-				dev_dbg(i2c_fsl->adapter.dev,
+				dev_dbg(&i2c_fsl->adapter.dev,
 					"FDR:0x%.2x, div:%ld, ga:0x%x, gb:0x%x,"
 					" a:%d, b:%d, speed:%d\n", fdr, est_div,
 					ga, gb, a, b, rate);
 				/* Condition 2 not accounted for */
-				dev_dbg(i2c_fsl->adapter.dev,
+				dev_dbg(&i2c_fsl->adapter.dev,
 					"Tr <= %d ns\n", (b - 3 * dfsr) *
 					1000000 / (i2c_clk / 1000));
 			}
@@ -330,9 +330,9 @@ static void i2c_fsl_set_clk(struct fsl_i2c_struct *i2c_fsl,
 		if (a == 24)
 			a += 4;
 	}
-	dev_dbg(i2c_fsl->adapter.dev,
+	dev_dbg(&i2c_fsl->adapter.dev,
 		"divider:%d, est_div:%ld, DFSR:%d\n", divider, est_div, dfsr);
-	dev_dbg(i2c_fsl->adapter.dev, "FDR:0x%.2x, speed:%d\n", fdr, rate);
+	dev_dbg(&i2c_fsl->adapter.dev, "FDR:0x%.2x, speed:%d\n", fdr, rate);
 	i2c_fsl->ifdr = fdr;
 	i2c_fsl->dfsrr = dfsr;
 }
@@ -368,9 +368,9 @@ static void i2c_fsl_set_clk(struct fsl_i2c_struct *i2c_fsl,
 		(500000U * i2c_clk_div[i][0] + (i2c_clk_rate / 2) - 1) /
 		(i2c_clk_rate / 2);
 
-	dev_dbg(i2c_fsl->adapter.dev, "<%s> I2C_CLK=%d, REQ DIV=%d\n",
+	dev_dbg(&i2c_fsl->adapter.dev, "<%s> I2C_CLK=%d, REQ DIV=%d\n",
 		__func__, i2c_clk_rate, div);
-	dev_dbg(i2c_fsl->adapter.dev, "<%s> IFDR[IC]=0x%x, REAL DIV=%d\n",
+	dev_dbg(&i2c_fsl->adapter.dev, "<%s> IFDR[IC]=0x%x, REAL DIV=%d\n",
 		__func__, i2c_clk_div[i][1], i2c_clk_div[i][0]);
 }
 #endif
@@ -382,7 +382,7 @@ static int i2c_fsl_write(struct i2c_adapter *adapter, struct i2c_msg *msgs)
 	int i, result;
 
 	if ( !(msgs->flags & I2C_M_DATA_ONLY) ) {
-		dev_dbg(adapter->dev,
+		dev_dbg(&adapter->dev,
 			"<%s> write slave address: addr=0x%02x\n",
 			__func__, msgs->addr << 1);
 
@@ -399,7 +399,7 @@ static int i2c_fsl_write(struct i2c_adapter *adapter, struct i2c_msg *msgs)
 
 	/* write data */
 	for (i = 0; i < msgs->len; i++) {
-		dev_dbg(adapter->dev,
+		dev_dbg(&adapter->dev,
 			"<%s> write byte: B%d=0x%02X\n",
 			__func__, i, msgs->buf[i]);
 		writeb(msgs->buf[i], base + FSL_I2C_I2DR);
@@ -425,7 +425,7 @@ static int i2c_fsl_read(struct i2c_adapter *adapter, struct i2c_msg *msgs)
 	writeb(0x0, base + FSL_I2C_I2SR);
 
 	if ( !(msgs->flags & I2C_M_DATA_ONLY) ) {
-		dev_dbg(adapter->dev,
+		dev_dbg(&adapter->dev,
 			"<%s> write slave address: addr=0x%02x\n",
 			__func__, (msgs->addr << 1) | 0x01);
 
@@ -478,7 +478,7 @@ static int i2c_fsl_read(struct i2c_adapter *adapter, struct i2c_msg *msgs)
 		}
 		msgs->buf[i] = readb(base + FSL_I2C_I2DR);
 
-		dev_dbg(adapter->dev, "<%s> read byte: B%d=0x%02X\n",
+		dev_dbg(&adapter->dev, "<%s> read byte: B%d=0x%02X\n",
 			__func__, i, msgs->buf[i]);
 	}
 	return 0;
@@ -544,7 +544,7 @@ static int __init i2c_fsl_probe(struct device_d *pdev)
 	/* Setup i2c_fsl driver structure */
 	i2c_fsl->adapter.master_xfer = i2c_fsl_xfer;
 	i2c_fsl->adapter.nr = pdev->id;
-	i2c_fsl->adapter.dev = pdev;
+	i2c_fsl->adapter.dev.parent = pdev;
 	i2c_fsl->base = dev_request_mem_region(pdev, 0);
 	i2c_fsl->dfsrr = -1;
 
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 24961ebda6..f371875aad 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -318,7 +318,7 @@ static int omap_i2c_init(struct omap_i2c_struct *i2c_omap)
 		while (!(omap_i2c_read_reg(i2c_omap, OMAP_I2C_SYSS_REG) &
 			 SYSS_RESETDONE_MASK)) {
 			if (is_timeout(start, MSECOND)) {
-				dev_warn(i2c_omap->adapter.dev, "timeout waiting "
+				dev_warn(&i2c_omap->adapter.dev, "timeout waiting "
 						"for controller reset\n");
 				return -ETIMEDOUT;
 			}
@@ -453,7 +453,7 @@ static int omap_i2c_wait_for_bb(struct i2c_adapter *adapter)
 	start = get_time_ns();
 	while (omap_i2c_read_reg(i2c_omap, OMAP_I2C_STAT_REG) & OMAP_I2C_STAT_BB) {
 		if (is_timeout(start, MSECOND)) {
-			dev_warn(adapter->dev, "timeout waiting for bus ready\n");
+			dev_warn(&adapter->dev, "timeout waiting for bus ready\n");
 			return -ETIMEDOUT;
 		}
 	}
@@ -476,9 +476,9 @@ omap_i2c_isr(struct omap_i2c_struct *dev)
 
 	bits = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
 	while ((stat = (omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG))) & bits) {
-		dev_dbg(dev->adapter.dev, "IRQ (ISR = 0x%04x)\n", stat);
+		dev_dbg(&dev->adapter.dev, "IRQ (ISR = 0x%04x)\n", stat);
 		if (count++ == 100) {
-			dev_warn(dev->adapter.dev, "Too much work in one IRQ\n");
+			dev_warn(&dev->adapter.dev, "Too much work in one IRQ\n");
 			break;
 		}
 
@@ -499,7 +499,7 @@ complete:
 					   OMAP_I2C_CON_STP);
 		}
 		if (stat & OMAP_I2C_STAT_AL) {
-			dev_err(dev->adapter.dev, "Arbitration lost\n");
+			dev_err(&dev->adapter.dev, "Arbitration lost\n");
 			err |= OMAP_I2C_STAT_AL;
 		}
 		if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
@@ -536,11 +536,11 @@ complete:
 					}
 				} else {
 					if (stat & OMAP_I2C_STAT_RRDY)
-						dev_err(dev->adapter.dev,
+						dev_err(&dev->adapter.dev,
 							"RRDY IRQ while no data"
 								" requested\n");
 					if (stat & OMAP_I2C_STAT_RDR)
-						dev_err(dev->adapter.dev,
+						dev_err(&dev->adapter.dev,
 							"RDR IRQ while no data"
 								" requested\n");
 					break;
@@ -577,11 +577,11 @@ complete:
 					}
 				} else {
 					if (stat & OMAP_I2C_STAT_XRDY)
-						dev_err(dev->adapter.dev,
+						dev_err(&dev->adapter.dev,
 							"XRDY IRQ while no "
 							"data to send\n");
 					if (stat & OMAP_I2C_STAT_XDR)
-						dev_err(dev->adapter.dev,
+						dev_err(&dev->adapter.dev,
 							"XDR IRQ while no "
 							"data to send\n");
 					break;
@@ -613,11 +613,11 @@ complete:
 			continue;
 		}
 		if (stat & OMAP_I2C_STAT_ROVR) {
-			dev_err(dev->adapter.dev, "Receive overrun\n");
+			dev_err(&dev->adapter.dev, "Receive overrun\n");
 			dev->cmd_err |= OMAP_I2C_STAT_ROVR;
 		}
 		if (stat & OMAP_I2C_STAT_XUDF) {
-			dev_err(dev->adapter.dev, "Transmit underflow\n");
+			dev_err(&dev->adapter.dev, "Transmit underflow\n");
 			dev->cmd_err |= OMAP_I2C_STAT_XUDF;
 		}
 	}
@@ -639,7 +639,7 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adapter,
 	int ret = 0;
 
 
-	dev_dbg(adapter->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n",
+	dev_dbg(&adapter->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n",
 		msg->addr, msg->len, msg->flags, stop);
 
 	if (msg->len == 0)
@@ -687,7 +687,7 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adapter,
 
 			/* Let the user know if i2c is in a bad state */
 			if (is_timeout(start, MSECOND)) {
-				dev_err(adapter->dev, "controller timed out "
+				dev_err(&adapter->dev, "controller timed out "
 				"waiting for start condition to finish\n");
 				return -ETIMEDOUT;
 			}
@@ -707,7 +707,7 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adapter,
 	while (ret){
 		ret = omap_i2c_isr(i2c_omap);
 		if (is_timeout(start, MSECOND)) {
-				dev_err(adapter->dev,
+				dev_err(&adapter->dev,
 				"timed out on polling for "
 				"open i2c message handling\n");
 				return -ETIMEDOUT;
@@ -835,7 +835,7 @@ i2c_omap_probe(struct device_d *pdev)
 
 	i2c_omap->adapter.master_xfer	= omap_i2c_xfer,
 	i2c_omap->adapter.nr = pdev->id;
-	i2c_omap->adapter.dev = pdev;
+	i2c_omap->adapter.dev.parent = pdev;
 
 	/* i2c device drivers may be active on return from add_adapter() */
 	r = i2c_add_numbered_adapter(&i2c_omap->adapter);
diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c
index 27fd256cf7..3af5c32ec6 100644
--- a/drivers/i2c/i2c.c
+++ b/drivers/i2c/i2c.c
@@ -80,7 +80,7 @@ int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 	 */
 
 	for (ret = 0; ret < num; ret++) {
-		dev_dbg(adap->dev, "master_xfer[%d] %c, addr=0x%02x, "
+		dev_dbg(&adap->dev, "master_xfer[%d] %c, addr=0x%02x, "
 			"len=%d\n", ret, (msgs[ret].flags & I2C_M_RD)
 			? 'R' : 'W', msgs[ret].addr, msgs[ret].len);
 	}
@@ -256,6 +256,9 @@ struct i2c_client *i2c_new_device(struct i2c_adapter *adapter,
 	client->adapter = adapter;
 	client->addr = chip->addr;
 
+	client->dev.parent = &adapter->dev;
+	dev_add_child(client->dev.parent, &client->dev);
+
 	status = register_device(&client->dev);
 
 #if 0
@@ -363,9 +366,21 @@ struct i2c_adapter *i2c_get_adapter(int busnum)
  */
 int i2c_add_numbered_adapter(struct i2c_adapter *adapter)
 {
+	int ret;
+
 	if (i2c_get_adapter(adapter->nr))
 		return -EBUSY;
 
+	adapter->dev.id = adapter->nr;
+	strcpy(adapter->dev.name, "i2c");
+
+	if (adapter->dev.parent)
+		dev_add_child(adapter->dev.parent, &adapter->dev);
+
+	ret = register_device(&adapter->dev);
+	if (ret)
+		return ret;
+
 	list_add_tail(&adapter->list, &adapter_list);
 
 	/* populate children from any i2c device tables */