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Commit f3f94ce5 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6 

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c-algo-bit: Read block data bugfix
  i2c-pxa: Fix adapter number
  i2c-gpio: Fix adapter number
parents 5d9adefc 939bc494

drivers/i2c/algos/i2c-algo-bit.c

+32 −20
Original line number Diff line number Diff line
@@ -357,13 +357,29 @@ static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) 
	return wrcount;

}



static int acknak(struct i2c_adapter *i2c_adap, int is_ack)

{

	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;



	/* assert: sda is high */

	if (is_ack)		/* send ack */

		setsda(adap, 0);

	udelay((adap->udelay + 1) / 2);

	if (sclhi(adap) < 0) {	/* timeout */

		dev_err(&i2c_adap->dev, "readbytes: ack/nak timeout\n");

		return -ETIMEDOUT;

	}

	scllo(adap);

	return 0;

}



static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)

{

	int inval;

	int rdcount=0;   	/* counts bytes read */

	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;

	unsigned char *temp = msg->buf;

	int count = msg->len;

	const unsigned flags = msg->flags;



	while (count > 0) {

		inval = i2c_inb(i2c_adap);
@@ -377,28 +393,12 @@ static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) 
		temp++;

		count--;



		if (msg->flags & I2C_M_NO_RD_ACK) {

			bit_dbg(2, &i2c_adap->dev, "i2c_inb: 0x%02x\n",

				inval);

			continue;

		}



		/* assert: sda is high */

		if (count)		/* send ack */

			setsda(adap, 0);

		udelay((adap->udelay + 1) / 2);

		bit_dbg(2, &i2c_adap->dev, "i2c_inb: 0x%02x %s\n", inval,

			count ? "A" : "NA");

		if (sclhi(adap)<0) {	/* timeout */

			dev_err(&i2c_adap->dev, "readbytes: timeout at ack\n");

			return -ETIMEDOUT;

		};

		scllo(adap);



		/* Some SMBus transactions require that we receive the

		   transaction length as the first read byte. */

		if (rdcount == 1 && (msg->flags & I2C_M_RECV_LEN)) {

		if (rdcount == 1 && (flags & I2C_M_RECV_LEN)) {

			if (inval <= 0 || inval > I2C_SMBUS_BLOCK_MAX) {

				if (!(flags & I2C_M_NO_RD_ACK))

					acknak(i2c_adap, 0);

				dev_err(&i2c_adap->dev, "readbytes: invalid "

					"block length (%d)\n", inval);

				return -EREMOTEIO;
@@ -409,6 +409,18 @@ static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) 
			count += inval;

			msg->len += inval;

		}



		bit_dbg(2, &i2c_adap->dev, "readbytes: 0x%02x %s\n",

			inval,

			(flags & I2C_M_NO_RD_ACK)

				? "(no ack/nak)"

				: (count ? "A" : "NA"));



		if (!(flags & I2C_M_NO_RD_ACK)) {

			inval = acknak(i2c_adap, count);

			if (inval < 0)

				return inval;

		}

	}

	return rdcount;

}

drivers/i2c/busses/i2c-gpio.c

+1 −1
Original line number Diff line number Diff line
@@ -147,7 +147,7 @@ static int __init i2c_gpio_probe(struct platform_device *pdev) 
	 * The reason to do so is to avoid sysfs names that only make

	 * sense when there are multiple adapters.

	 */

	adap->nr = pdev->id >= 0 ? pdev->id : 0;

	adap->nr = (pdev->id != -1) ? pdev->id : 0;

	ret = i2c_bit_add_numbered_bus(adap);

	if (ret)

		goto err_add_bus;

drivers/i2c/busses/i2c-pxa.c

+1 −1
Original line number Diff line number Diff line
@@ -926,7 +926,7 @@ static int i2c_pxa_probe(struct platform_device *dev) 
	 * The reason to do so is to avoid sysfs names that only make

	 * sense when there are multiple adapters.

	 */

	i2c->adap.nr = dev->id >= 0 ? dev->id : 0;

	i2c->adap.nr = dev->id != -1 ? dev->id : 0;



	ret = i2c_add_numbered_adapter(&i2c->adap);

	if (ret < 0) {