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: Fix platform driver hotplug/coldplug
  i2c: New driver for the SuperH Mobile I2C bus controller
  i2c/scx200_acb: Don't use 0 as NULL pointer
  i2c-bfin-twi: Fix mismatch in add timer and delete timer
  i2c-bfin-twi: Just let i2c-bfin-twi driver depends on BLACKFIN
  i2c-bfin-twi: Use simpler comment headers and strip out information that is maintained in the scm's log
  i2c-bfin-twi: Cleanup driver descriptions, versions and some module useful information
  i2c-bfin-twi: Add missing pin mux operation
  i2c-bfin-twi: Add platform_resource interface to support multi-port TWI controllers
  i2c-bfin-twi: Add repeat start feature to avoid break of a bundle of i2c master xfer operation
  i2c: Remove trailing whitespaces in busses/Kconfig
  i2c: Replace remaining __FUNCTION__ occurrences
  i2c: Renesas SH7760 I2C master driver
  i2c-dev: Split i2cdev_ioctl
  i2c-ibm_iic: Support building as an of_platform driver
  i2c-ibm_iic: Change the log levels
  i2c: Add platform driver on top of the new pca-algorithm
  i2c-algo-pca: Extend for future drivers
  i2c-algo-pca: Remove trailing whitespaces and unnecessary UTF
  i2c: Remove the algorithm drivers from the config menu

1 files changed, 63 insertions, 63 deletions

diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index 2a16211f12e..e954a20b97a 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -1,6 +1,7 @@
 /*
- *  i2c-algo-pca.c i2c driver algorithms for PCA9564 adapters                
+ *  i2c-algo-pca.c i2c driver algorithms for PCA9564 adapters
  *    Copyright (C) 2004 Arcom Control Systems
+ *    Copyright (C) 2008 Pengutronix
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -21,14 +22,10 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/delay.h>
-#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pca.h>
-#include "i2c-algo-pca.h"
-
-#define DRIVER "i2c-algo-pca"
 
 #define DEB1(fmt, args...) do { if (i2c_debug>=1) printk(fmt, ## args); } while(0)
 #define DEB2(fmt, args...) do { if (i2c_debug>=2) printk(fmt, ## args); } while(0)
@@ -36,15 +33,15 @@
 
 static int i2c_debug;
 
-#define pca_outw(adap, reg, val) adap->write_byte(adap, reg, val)
-#define pca_inw(adap, reg) adap->read_byte(adap, reg)
+#define pca_outw(adap, reg, val) adap->write_byte(adap->data, reg, val)
+#define pca_inw(adap, reg) adap->read_byte(adap->data, reg)
 
 #define pca_status(adap) pca_inw(adap, I2C_PCA_STA)
-#define pca_clock(adap) adap->get_clock(adap)
-#define pca_own(adap) adap->get_own(adap)
+#define pca_clock(adap) adap->i2c_clock
 #define pca_set_con(adap, val) pca_outw(adap, I2C_PCA_CON, val)
 #define pca_get_con(adap) pca_inw(adap, I2C_PCA_CON)
-#define pca_wait(adap) adap->wait_for_interrupt(adap)
+#define pca_wait(adap) adap->wait_for_completion(adap->data)
+#define pca_reset(adap) adap->reset_chip(adap->data)
 
 /*
  * Generate a start condition on the i2c bus.
@@ -99,7 +96,7 @@ static void pca_stop(struct i2c_algo_pca_data *adap)
  *
  * returns after the address has been sent
  */
-static void pca_address(struct i2c_algo_pca_data *adap, 
+static void pca_address(struct i2c_algo_pca_data *adap,
 			struct i2c_msg *msg)
 {
 	int sta = pca_get_con(adap);
@@ -108,9 +105,9 @@ static void pca_address(struct i2c_algo_pca_data *adap,
 	addr = ( (0x7f & msg->addr) << 1 );
 	if (msg->flags & I2C_M_RD )
 		addr |= 1;
-	DEB2("=== SLAVE ADDRESS %#04x+%c=%#04x\n", 
+	DEB2("=== SLAVE ADDRESS %#04x+%c=%#04x\n",
 	     msg->addr, msg->flags & I2C_M_RD ? 'R' : 'W', addr);
-	
+
 	pca_outw(adap, I2C_PCA_DAT, addr);
 
 	sta &= ~(I2C_PCA_CON_STO|I2C_PCA_CON_STA|I2C_PCA_CON_SI);
@@ -124,7 +121,7 @@ static void pca_address(struct i2c_algo_pca_data *adap,
  *
  * Returns after the byte has been transmitted
  */
-static void pca_tx_byte(struct i2c_algo_pca_data *adap, 
+static void pca_tx_byte(struct i2c_algo_pca_data *adap,
 			__u8 b)
 {
 	int sta = pca_get_con(adap);
@@ -142,19 +139,19 @@ static void pca_tx_byte(struct i2c_algo_pca_data *adap,
  *
  * returns immediately.
  */
-static void pca_rx_byte(struct i2c_algo_pca_data *adap, 
+static void pca_rx_byte(struct i2c_algo_pca_data *adap,
 			__u8 *b, int ack)
 {
 	*b = pca_inw(adap, I2C_PCA_DAT);
 	DEB2("=== READ %#04x %s\n", *b, ack ? "ACK" : "NACK");
 }
 
-/* 
+/*
  * Setup ACK or NACK for next received byte and wait for it to arrive.
  *
  * Returns after next byte has arrived.
  */
-static void pca_rx_ack(struct i2c_algo_pca_data *adap, 
+static void pca_rx_ack(struct i2c_algo_pca_data *adap,
 		       int ack)
 {
 	int sta = pca_get_con(adap);
@@ -168,15 +165,6 @@ static void pca_rx_ack(struct i2c_algo_pca_data *adap,
 	pca_wait(adap);
 }
 
-/* 
- * Reset the i2c bus / SIO 
- */
-static void pca_reset(struct i2c_algo_pca_data *adap)
-{
-	/* apparently only an external reset will do it. not a lot can be done */
-	printk(KERN_ERR DRIVER ": Haven't figured out how to do a reset yet\n");
-}
-
 static int pca_xfer(struct i2c_adapter *i2c_adap,
                     struct i2c_msg *msgs,
                     int num)
@@ -187,7 +175,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
 	int numbytes = 0;
 	int state;
 	int ret;
-	int timeout = 100;
+	int timeout = i2c_adap->timeout;
 
 	while ((state = pca_status(adap)) != 0xf8 && timeout--) {
 		msleep(10);
@@ -203,14 +191,14 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
 		for (curmsg = 0; curmsg < num; curmsg++) {
 			int addr, i;
 			msg = &msgs[curmsg];
-			
+
 			addr = (0x7f & msg->addr) ;
-		
+
 			if (msg->flags & I2C_M_RD )
-				printk(KERN_INFO "    [%02d] RD %d bytes from %#02x [%#02x, ...]\n", 
+				printk(KERN_INFO "    [%02d] RD %d bytes from %#02x [%#02x, ...]\n",
 				       curmsg, msg->len, addr, (addr<<1) | 1);
 			else {
-				printk(KERN_INFO "    [%02d] WR %d bytes to %#02x [%#02x%s", 
+				printk(KERN_INFO "    [%02d] WR %d bytes to %#02x [%#02x%s",
 				       curmsg, msg->len, addr, addr<<1,
 				       msg->len == 0 ? "" : ", ");
 				for(i=0; i < msg->len; i++)
@@ -237,7 +225,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
 		case 0x10: /* A repeated start condition has been transmitted */
 			pca_address(adap, msg);
 			break;
-			
+
 		case 0x18: /* SLA+W has been transmitted; ACK has been received */
 		case 0x28: /* Data byte in I2CDAT has been transmitted; ACK has been received */
 			if (numbytes < msg->len) {
@@ -287,7 +275,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
 		case 0x38: /* Arbitration lost during SLA+W, SLA+R or data bytes */
 			DEB2("Arbitration lost\n");
 			goto out;
-			
+
 		case 0x58: /* Data byte has been received; NOT ACK has been returned */
 			if ( numbytes == msg->len - 1 ) {
 				pca_rx_byte(adap, &msg->buf[numbytes], 0);
@@ -317,16 +305,16 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
 			pca_reset(adap);
 			goto out;
 		default:
-			printk(KERN_ERR DRIVER ": unhandled SIO state 0x%02x\n", state);
+			dev_err(&i2c_adap->dev, "unhandled SIO state 0x%02x\n", state);
 			break;
 		}
-		
+
 	}
 
 	ret = curmsg;
  out:
 	DEB1(KERN_CRIT "}}} transfered %d/%d messages. "
-	     "status is %#04x. control is %#04x\n", 
+	     "status is %#04x. control is %#04x\n",
 	     curmsg, num, pca_status(adap),
 	     pca_get_con(adap));
 	return ret;
@@ -337,53 +325,65 @@ static u32 pca_func(struct i2c_adapter *adap)
         return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
 }
 
-static int pca_init(struct i2c_algo_pca_data *adap)
+static const struct i2c_algorithm pca_algo = {
+	.master_xfer	= pca_xfer,
+	.functionality	= pca_func,
+};
+
+static int pca_init(struct i2c_adapter *adap)
 {
 	static int freqs[] = {330,288,217,146,88,59,44,36};
-	int own, clock;
+	int clock;
+	struct i2c_algo_pca_data *pca_data = adap->algo_data;
+
+	if (pca_data->i2c_clock > 7) {
+		printk(KERN_WARNING "%s: Invalid I2C clock speed selected. Trying default.\n",
+			adap->name);
+		pca_data->i2c_clock = I2C_PCA_CON_59kHz;
+	}
+
+	adap->algo = &pca_algo;
 
-	own = pca_own(adap);
-	clock = pca_clock(adap);
-	DEB1(KERN_INFO DRIVER ": own address is %#04x\n", own);
-	DEB1(KERN_INFO DRIVER ": clock freqeuncy is %dkHz\n", freqs[clock]);
+	pca_reset(pca_data);
 
-	pca_outw(adap, I2C_PCA_ADR, own << 1);
+	clock = pca_clock(pca_data);
+	DEB1(KERN_INFO "%s: Clock frequency is %dkHz\n", adap->name, freqs[clock]);
 
-	pca_set_con(adap, I2C_PCA_CON_ENSIO | clock);
-	udelay(500); /* 500 µs for oscilator to stabilise */
+	pca_set_con(pca_data, I2C_PCA_CON_ENSIO | clock);
+	udelay(500); /* 500 us for oscilator to stabilise */
 
 	return 0;
 }
 
-static const struct i2c_algorithm pca_algo = {
-	.master_xfer	= pca_xfer,
-	.functionality	= pca_func,
-};
-
-/* 
- * registering functions to load algorithms at runtime 
+/*
+ * registering functions to load algorithms at runtime
  */
 int i2c_pca_add_bus(struct i2c_adapter *adap)
 {
-	struct i2c_algo_pca_data *pca_adap = adap->algo_data;
 	int rval;
 
-	/* register new adapter to i2c module... */
-	adap->algo = &pca_algo;
+	rval = pca_init(adap);
+	if (rval)
+		return rval;
 
-	adap->timeout = 100;		/* default values, should	*/
-	adap->retries = 3;		/* be replaced by defines	*/
+	return i2c_add_adapter(adap);
+}
+EXPORT_SYMBOL(i2c_pca_add_bus);
 
-	if ((rval = pca_init(pca_adap)))
-		return rval;
+int i2c_pca_add_numbered_bus(struct i2c_adapter *adap)
+{
+	int rval;
 
-	rval = i2c_add_adapter(adap);
+	rval = pca_init(adap);
+	if (rval)
+		return rval;
 
-	return rval;
+	return i2c_add_numbered_adapter(adap);
 }
-EXPORT_SYMBOL(i2c_pca_add_bus);
+EXPORT_SYMBOL(i2c_pca_add_numbered_bus);
 
-MODULE_AUTHOR("Ian Campbell <icampbell@arcom.com>");
+MODULE_AUTHOR("Ian Campbell <icampbell@arcom.com>, "
+	"Wolfram Sang <w.sang@pengutronix.de>");
 MODULE_DESCRIPTION("I2C-Bus PCA9564 algorithm");
 MODULE_LICENSE("GPL");