dm: Add I2C support and convert sandbox, tegra

466 lines not on this page · raw message

index 7d8daa2..91a0a43 100644
@@ -87,4 +87,10 @@
 #undef CONFIG_IMAGE_FORMAT_LEGACY
 #endif
 
+#ifdef CONFIG_DM_I2C
+# ifdef CONFIG_SYS_I2C
+#  error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
+# endif
+#endif
+
 #endif	/* __CONFIG_FALLBACKS_H */

index 202f59b..01866c3 100644
@@ -29,6 +29,8 @@ enum uclass_id {
 	UCLASS_SPI_FLASH,	/* SPI flash */
 	UCLASS_CROS_EC,	/* Chrome OS EC */
 	UCLASS_THERMAL,		/* Thermal sensor */
+	UCLASS_I2C,		/* I2C bus */
+	UCLASS_I2C_GENERIC,	/* Generic I2C device */
 
 	UCLASS_COUNT,
 	UCLASS_INVALID = -1,

362 lines not on this page · raw message

index c266b88..22db1bb 100644
@@ -69,8 +69,10 @@
 #include <bootretry.h>
 #include <cli.h>
 #include <command.h>
+#include <dm.h>
 #include <edid.h>
 #include <environment.h>
+#include <errno.h>
 #include <i2c.h>
 #include <malloc.h>
 #include <asm/byteorder.h>

@@ -117,6 +119,60 @@ static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
 
 #define DISP_LINE_LEN	16
 
+/*
+ * Default for driver model is to use the chip's existing address length.
+ * For legacy code, this is not stored, so we need to use a suitable
+ * default.
+ */
+#ifdef CONFIG_DM_I2C
+#define DEFAULT_ADDR_LEN	(-1)
+#else
+#define DEFAULT_ADDR_LEN	1
+#endif
+
+#ifdef CONFIG_DM_I2C
+static struct udevice *i2c_cur_bus;
+
+static int i2c_set_bus_num(unsigned int busnum)
+{
+	struct udevice *bus;
+	int ret;
+
+	ret = uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus);
+	if (ret) {
+		debug("%s: No bus %d\n", __func__, busnum);
+		return ret;
+	}
+	i2c_cur_bus = bus;
+
+	return 0;
+}
+
+static int i2c_get_cur_bus(struct udevice **busp)
+{
+	if (!i2c_cur_bus) {
+		puts("No I2C bus selected\n");
+		return -ENODEV;
+	}
+	*busp = i2c_cur_bus;
+
+	return 0;
+}
+
+static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp)
+{
+	struct udevice *bus;
+	int ret;
+
+	ret = i2c_get_cur_bus(&bus);
+	if (ret)
+		return ret;
+
+	return i2c_get_chip(bus, chip_addr, devp);
+}
+
+#endif
+
 /**
  * i2c_init_board() - Board-specific I2C bus init
  *

@@ -143,7 +199,7 @@ void i2c_init_board(void)
  *
  * Returns I2C bus speed in Hz.
  */
-#if !defined(CONFIG_SYS_I2C)
+#if !defined(CONFIG_SYS_I2C) && !defined(CONFIG_DM_I2C)
 /*
  * TODO: Implement architecture-specific get/set functions
  * Should go away, if we switched completely to new multibus support

@@ -182,12 +238,12 @@ int i2c_set_bus_speed(unsigned int speed)
  *
  * Returns the address length.
  */
-static uint get_alen(char *arg)
+static uint get_alen(char *arg, int default_len)
 {
 	int	j;
 	int	alen;
 
-	alen = 1;
+	alen = default_len;
 	for (j = 0; j < 8; j++) {
 		if (arg[j] == '.') {
 			alen = arg[j+1] - '0';

@@ -227,8 +283,13 @@ static int i2c_report_err(int ret, enum i2c_err_op op)
 static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	u_char	chip;
-	uint	devaddr, alen, length;
+	uint	devaddr, length;
+	int alen;
 	u_char  *memaddr;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc != 5)
 		return CMD_RET_USAGE;

@@ -243,7 +304,7 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 	 * 2 bytes long.  Some day it might be 3 bytes long :-).
 	 */
 	devaddr = simple_strtoul(argv[2], NULL, 16);
-	alen = get_alen(argv[2]);
+	alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 	if (alen > 3)
 		return CMD_RET_USAGE;
 

@@ -257,18 +318,31 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 	 */
 	memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16);
 
-	if (i2c_read(chip, devaddr, alen, memaddr, length) != 0) {
-		i2c_report_err(-1, I2C_ERR_READ);
-		return 1;
-	}
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (!ret)
+		ret = i2c_read(dev, devaddr, memaddr, length);
+#else
+	ret = i2c_read(chip, devaddr, alen, memaddr, length);
+#endif
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
+
 	return 0;
 }
 
 static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	u_char	chip;
-	uint	devaddr, alen, length;
+	uint	devaddr, length;
+	int alen;
 	u_char  *memaddr;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc != 5)
 		return cmd_usage(cmdtp);

@@ -288,7 +362,7 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 	 * 2 bytes long.  Some day it might be 3 bytes long :-).
 	 */
 	devaddr = simple_strtoul(argv[3], NULL, 16);
-	alen = get_alen(argv[3]);
+	alen = get_alen(argv[3], DEFAULT_ADDR_LEN);
 	if (alen > 3)
 		return cmd_usage(cmdtp);
 

@@ -297,10 +371,22 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 	 */
 	length = simple_strtoul(argv[4], NULL, 16);
 
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
+
 	while (length-- > 0) {
-		if (i2c_write(chip, devaddr++, alen, memaddr++, 1) != 0) {
-			return i2c_report_err(-1, I2C_ERR_WRITE);
-		}
+#ifdef CONFIG_DM_I2C
+		ret = i2c_write(dev, devaddr++, memaddr++, 1);
+#else
+		ret = i2c_write(chip, devaddr++, alen, memaddr++, 1);
+#endif
+		if (ret)
+			return i2c_report_err(ret, I2C_ERR_WRITE);
 /*
  * No write delay with FRAM devices.
  */

@@ -311,6 +397,38 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 	return 0;
 }
 
+#ifdef CONFIG_DM_I2C
+static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	struct udevice *dev;
+	uint flags;
+	int chip;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	chip = simple_strtoul(argv[1], NULL, 16);
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
+
+	if (argc > 2) {
+		flags = simple_strtoul(argv[2], NULL, 16);
+		ret = i2c_set_chip_flags(dev, flags);
+	} else  {
+		ret = i2c_get_chip_flags(dev, &flags);
+		if (!ret)
+			printf("%x\n", flags);
+	}
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
+
+	return 0;
+}
+#endif
+
 /**
  * do_i2c_md() - Handle the "i2c md" command-line command
  * @cmdtp:	Command data struct pointer

@@ -327,8 +445,13 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	u_char	chip;
-	uint	addr, alen, length;
+	uint	addr, length;
+	int alen;
 	int	j, nbytes, linebytes;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	/* We use the last specified parameters, unless new ones are
 	 * entered.

@@ -356,7 +479,7 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 		 * 2 bytes long.  Some day it might be 3 bytes long :-).
 		 */
 		addr = simple_strtoul(argv[2], NULL, 16);
-		alen = get_alen(argv[2]);
+		alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 		if (alen > 3)
 			return CMD_RET_USAGE;
 

@@ -368,6 +491,14 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 			length = simple_strtoul(argv[3], NULL, 16);
 	}
 
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
+#endif
+
 	/*
 	 * Print the lines.
 	 *

@@ -381,8 +512,13 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 
 		linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
 
-		if (i2c_read(chip, addr, alen, linebuf, linebytes) != 0)
-			i2c_report_err(-1, I2C_ERR_READ);
+#ifdef CONFIG_DM_I2C
+		ret = i2c_read(dev, addr, linebuf, linebytes);
+#else
+		ret = i2c_read(chip, addr, alen, linebuf, linebytes);
+#endif
+		if (ret)
+			i2c_report_err(ret, I2C_ERR_READ);
 		else {
 			printf("%04x:", addr);
 			cp = linebuf;

@@ -429,9 +565,13 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 {
 	uchar	chip;
 	ulong	addr;
-	uint	alen;
+	int	alen;
 	uchar	byte;
 	int	count;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if ((argc < 4) || (argc > 5))
 		return CMD_RET_USAGE;

@@ -445,10 +585,17 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 	 * Address is always specified.
 	 */
 	addr = simple_strtoul(argv[2], NULL, 16);
-	alen = get_alen(argv[2]);
+	alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 	if (alen > 3)
 		return CMD_RET_USAGE;
 
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
 	/*
 	 * Value to write is always specified.
 	 */

@@ -463,8 +610,13 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 		count = 1;
 
 	while (count-- > 0) {
-		if (i2c_write(chip, addr++, alen, &byte, 1) != 0)
-			i2c_report_err(-1, I2C_ERR_WRITE);
+#ifdef CONFIG_DM_I2C
+		ret = i2c_write(dev, addr++, &byte, 1);
+#else
+		ret = i2c_write(chip, addr++, alen, &byte, 1);
+#endif
+		if (ret)
+			i2c_report_err(ret, I2C_ERR_WRITE);
 		/*
 		 * Wait for the write to complete.  The write can take
 		 * up to 10mSec (we allow a little more time).

@@ -499,11 +651,15 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 {
 	uchar	chip;
 	ulong	addr;
-	uint	alen;
+	int	alen;
 	int	count;
 	uchar	byte;
 	ulong	crc;
 	ulong	err;
+	int ret = 0;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc < 4)
 		return CMD_RET_USAGE;

@@ -517,10 +673,17 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 	 * Address is always specified.
 	 */
 	addr = simple_strtoul(argv[2], NULL, 16);
-	alen = get_alen(argv[2]);
+	alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 	if (alen > 3)
 		return CMD_RET_USAGE;
 
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
+#endif
 	/*
 	 * Count is always specified
 	 */

@@ -534,13 +697,18 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 	crc = 0;
 	err = 0;
 	while (count-- > 0) {
-		if (i2c_read(chip, addr, alen, &byte, 1) != 0)
+#ifdef CONFIG_DM_I2C
+		ret = i2c_read(dev, addr, &byte, 1);
+#else
+		ret = i2c_read(chip, addr, alen, &byte, 1);
+#endif
+		if (ret)
 			err++;
 		crc = crc32 (crc, &byte, 1);
 		addr++;
 	}
 	if (err > 0)
-		i2c_report_err(-1, I2C_ERR_READ);
+		i2c_report_err(ret, I2C_ERR_READ);
 	else
 		printf ("%08lx\n", crc);
 

@@ -568,10 +736,14 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
 {
 	uchar	chip;
 	ulong	addr;
-	uint	alen;
+	int	alen;
 	ulong	data;
 	int	size = 1;
 	int	nbytes;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc != 3)
 		return CMD_RET_USAGE;

@@ -601,19 +773,32 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
 		 * Address is always specified.
 		 */
 		addr = simple_strtoul(argv[2], NULL, 16);
-		alen = get_alen(argv[2]);
+		alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 		if (alen > 3)
 			return CMD_RET_USAGE;
 	}
 
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
+
 	/*
 	 * Print the address, followed by value.  Then accept input for
 	 * the next value.  A non-converted value exits.
 	 */
 	do {
 		printf("%08lx:", addr);
-		if (i2c_read(chip, addr, alen, (uchar *)&data, size) != 0)
-			i2c_report_err(-1, I2C_ERR_READ);
+#ifdef CONFIG_DM_I2C
+		ret = i2c_read(dev, addr, (uchar *)&data, size);
+#else
+		ret = i2c_read(chip, addr, alen, (uchar *)&data, size);
+#endif
+		if (ret)
+			i2c_report_err(ret, I2C_ERR_READ);
 		else {
 			data = cpu_to_be32(data);
 			if (size == 1)

@@ -655,8 +840,15 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
 				 * good enough to not time out
 				 */
 				bootretry_reset_cmd_timeout();
-				if (i2c_write(chip, addr, alen, (uchar *)&data, size) != 0)
-					i2c_report_err(-1, I2C_ERR_WRITE);
+#ifdef CONFIG_DM_I2C
+				ret = i2c_write(dev, addr, (uchar *)&data,
+						size);
+#else
+				ret = i2c_write(chip, addr, alen,
+						(uchar *)&data, size);
+#endif
+				if (ret)
+					i2c_report_err(ret, I2C_ERR_WRITE);
 #ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
 				udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
 #endif

@@ -697,6 +889,13 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 	int k, skip;
 	unsigned int bus = GET_BUS_NUM;
 #endif	/* NOPROBES */
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *bus, *dev;
+
+	if (i2c_get_cur_bus(&bus))
+		return CMD_RET_FAILURE;
+#endif
 
 	if (argc == 2)
 		addr = simple_strtol(argv[1], 0, 16);

@@ -717,7 +916,12 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 		if (skip)
 			continue;
 #endif
-		if (i2c_probe(j) == 0) {
+#ifdef CONFIG_DM_I2C
+		ret = i2c_probe(bus, j, 0, &dev);
+#else
+		ret = i2c_probe(j);
+#endif
+		if (ret == 0) {
 			printf(" %02X", j);
 			found++;
 		}

@@ -754,11 +958,15 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	u_char	chip;
-	ulong	alen;
+	int alen;
 	uint	addr;
 	uint	length;
 	u_char	bytes[16];
 	int	delay;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc < 3)
 		return CMD_RET_USAGE;

@@ -772,9 +980,16 @@ static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 	 * Address is always specified.
 	 */
 	addr = simple_strtoul(argv[2], NULL, 16);
-	alen = get_alen(argv[2]);
+	alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
 	if (alen > 3)
 		return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret && alen != -1)
+		ret = i2c_set_chip_offset_len(dev, alen);
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
 
 	/*
 	 * Length is the number of objects, not number of bytes.

@@ -794,8 +1009,13 @@ static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 	 * Run the loop...
 	 */
 	while (1) {
-		if (i2c_read(chip, addr, alen, bytes, length) != 0)
-			i2c_report_err(-1, I2C_ERR_READ);
+#ifdef CONFIG_DM_I2C
+		ret = i2c_read(dev, addr, bytes, length);
+#else
+		ret = i2c_read(chip, addr, alen, bytes, length);
+#endif
+		if (ret)
+			i2c_report_err(ret, I2C_ERR_READ);
 		udelay(delay);
 	}
 

@@ -1345,6 +1565,10 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 {
 	u_char chip;
 	struct edid1_info edid;
+	int ret;
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+#endif
 
 	if (argc < 2) {
 		cmd_usage(cmdtp);

@@ -1352,10 +1576,15 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 	}
 
 	chip = simple_strtoul(argv[1], NULL, 16);
-	if (i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)) != 0) {
-		i2c_report_err(-1, I2C_ERR_READ);
-		return 1;
-	}
+#ifdef CONFIG_DM_I2C
+	ret = i2c_get_cur_bus_chip(chip, &dev);
+	if (!ret)
+		ret = i2c_read(dev, 0, (uchar *)&edid, sizeof(edid));
+#else
+	ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid));
+#endif
+	if (ret)
+		return i2c_report_err(ret, I2C_ERR_READ);
 
 	if (edid_check_info(&edid)) {
 		puts("Content isn't valid EDID.\n");

@@ -1437,17 +1666,28 @@ static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc,
  * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
  * on error.
  */
-#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS)
+#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) || \
+		defined(CONFIG_DM_I2C)
 static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc,
 				char * const argv[])
 {
 	int		ret = 0;
-	unsigned int	bus_no;
+	int	bus_no;
 
-	if (argc == 1)
+	if (argc == 1) {
 		/* querying current setting */
-		printf("Current bus is %d\n", i2c_get_bus_num());
-	else {
+#ifdef CONFIG_DM_I2C
+		struct udevice *bus;
+
+		if (!i2c_get_cur_bus(&bus))
+			bus_no = bus->seq;
+		else
+			bus_no = -1;
+#else
+		bus_no = i2c_get_bus_num();
+#endif
+		printf("Current bus is %d\n", bus_no);
+	} else {
 		bus_no = simple_strtoul(argv[1], NULL, 10);
 #if defined(CONFIG_SYS_I2C)
 		if (bus_no >= CONFIG_SYS_NUM_I2C_BUSES) {

@@ -1478,13 +1718,28 @@ static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const
 {
 	int speed, ret=0;
 
-	if (argc == 1)
+#ifdef CONFIG_DM_I2C
+	struct udevice *bus;
+
+	if (i2c_get_cur_bus(&bus))
+		return 1;
+#endif
+	if (argc == 1) {
+#ifdef CONFIG_DM_I2C
+		speed = i2c_get_bus_speed(bus);
+#else
+		speed = i2c_get_bus_speed();
+#endif
 		/* querying current speed */
-		printf("Current bus speed=%d\n", i2c_get_bus_speed());
-	else {
+		printf("Current bus speed=%d\n", speed);
+	} else {
 		speed = simple_strtoul(argv[1], NULL, 10);
 		printf("Setting bus speed to %d Hz\n", speed);
+#ifdef CONFIG_DM_I2C
+		ret = i2c_set_bus_speed(bus, speed);
+#else
 		ret = i2c_set_bus_speed(speed);
+#endif
 		if (ret)
 			printf("Failure changing bus speed (%d)\n", ret);
 	}

@@ -1532,7 +1787,16 @@ static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
  */
 static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-#if defined(CONFIG_SYS_I2C)
+#if defined(CONFIG_DM_I2C)
+	struct udevice *bus;
+
+	if (i2c_get_cur_bus(&bus))
+		return CMD_RET_FAILURE;
+	if (i2c_deblock(bus)) {
+		printf("Error: Not supported by the driver\n");
+		return CMD_RET_FAILURE;
+	}
+#elif defined(CONFIG_SYS_I2C)
 	i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr);
 #else
 	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);

@@ -1546,7 +1810,7 @@ static cmd_tbl_t cmd_i2c_sub[] = {
 #endif
 	U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""),
 #if defined(CONFIG_SYS_I2C) || \
-	defined(CONFIG_I2C_MULTI_BUS)
+	defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C)
 	U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""),
 #endif  /* CONFIG_I2C_MULTI_BUS */
 #if defined(CONFIG_I2C_EDID)

@@ -1560,6 +1824,9 @@ static cmd_tbl_t cmd_i2c_sub[] = {
 	U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""),
 	U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""),
 	U_BOOT_CMD_MKENT(write, 5, 0, do_i2c_write, "", ""),
+#ifdef CONFIG_DM_I2C
+	U_BOOT_CMD_MKENT(flags, 2, 1, do_i2c_flags, "", ""),
+#endif
 	U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""),
 #if defined(CONFIG_CMD_SDRAM)
 	U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""),

@@ -1610,7 +1877,7 @@ static char i2c_help_text[] =
 #endif
 	"crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
 #if defined(CONFIG_SYS_I2C) || \
-	defined(CONFIG_I2C_MULTI_BUS)
+	defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C)
 	"i2c dev [dev] - show or set current I2C bus\n"
 #endif  /* CONFIG_I2C_MULTI_BUS */
 #if defined(CONFIG_I2C_EDID)

@@ -1622,8 +1889,11 @@ static char i2c_help_text[] =
 	"i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n"
 	"i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n"
 	"i2c probe [address] - test for and show device(s) on the I2C bus\n"
-	"i2c read chip address[.0, .1, .2] length memaddress - read to memory \n"
+	"i2c read chip address[.0, .1, .2] length memaddress - read to memory\n"
 	"i2c write memaddress chip address[.0, .1, .2] length - write memory to i2c\n"
+#ifdef CONFIG_DM_I2C
+	"i2c flags chip [flags] - set or get chip flags\n"
+#endif
 	"i2c reset - re-init the I2C Controller\n"
 #if defined(CONFIG_CMD_SDRAM)
 	"i2c sdram chip - print SDRAM configuration information\n"

new file mode 100644
index 0000000..aa89f95
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+
+UCLASS_DRIVER(i2c_emul) = {
+	.id		= UCLASS_I2C_EMUL,
+	.name		= "i2c_emul",
+};

index 01866c3..16e4224 100644
@@ -19,6 +19,7 @@ enum uclass_id {
 	UCLASS_TEST_FDT,
 	UCLASS_TEST_BUS,
 	UCLASS_SPI_EMUL,	/* sandbox SPI device emulator */
+	UCLASS_I2C_EMUL,	/* sandbox I2C device emulator */
 	UCLASS_SIMPLE_BUS,
 
 	/* U-Boot uclasses start here */

129 lines not on this page · raw message

new file mode 100644
index 0000000..25a0c85
@@ -0,0 +1,26 @@
+/*
+ * Test-related constants for sandbox
+ *
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_TEST_H
+#define __ASM_TEST_H
+
+/* The sandbox driver always permits an I2C device with this address */
+#define SANDBOX_I2C_TEST_ADDR	0x59
+
+enum sandbox_i2c_eeprom_test_mode {
+	SIE_TEST_MODE_NONE,
+	/* Permits read/write of only one byte per I2C transaction */
+	SIE_TEST_MODE_SINGLE_BYTE,
+};
+
+void sandbox_i2c_eeprom_set_test_mode(struct udevice *dev,
+				      enum sandbox_i2c_eeprom_test_mode mode);
+
+void sandbox_i2c_eeprom_set_offset_len(struct udevice *dev, int offset_len);
+
+#endif

176 lines not on this page · raw message

index 2b03841..657f751 100644
@@ -112,6 +112,12 @@
 #define CONFIG_SPI_FLASH_STMICRO
 #define CONFIG_SPI_FLASH_WINBOND
 
+#define CONFIG_DM_I2C
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C_SANDBOX
+#define CONFIG_I2C_EDID
+#define CONFIG_I2C_EEPROM
+
 /* Memory things - we don't really want a memory test */
 #define CONFIG_SYS_LOAD_ADDR		0x00000000
 #define CONFIG_SYS_MEMTEST_START	0x00100000

51 lines not on this page · raw message

index 16e4224..f17c3c2 100644
@@ -32,6 +32,7 @@ enum uclass_id {
 	UCLASS_THERMAL,		/* Thermal sensor */
 	UCLASS_I2C,		/* I2C bus */
 	UCLASS_I2C_GENERIC,	/* Generic I2C device */
+	UCLASS_I2C_EEPROM,	/* I2C EEPROM device */
 
 	UCLASS_COUNT,
 	UCLASS_INVALID = -1,

new file mode 100644
index 0000000..ea6c962
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __I2C_EEPROM
+#define __I2C_EEPROM
+
+struct i2c_eeprom_ops {
+	int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
+	int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
+		     int size);
+};
+
+struct i2c_eeprom {
+};
+
+#endif

index fa9eac0..ec61465 100644
@@ -89,6 +89,18 @@ void ut_failf(struct dm_test_state *dms, const char *fname, int line,
 	}								\
 }
 
+/* Assert that a pointer is not NULL */
+#define ut_assertnonnull(expr) {					\
+	const void *val = (expr);					\
+									\
+	if (val == NULL) {						\
+		ut_failf(dms, __FILE__, __LINE__, __func__,		\
+			 #expr " = NULL",				\
+			 "Expected non-null, got NULL");		\
+		return -1;						\
+	}								\
+}
+
 /* Assert that an operation succeeds (returns 0) */
 #define ut_assertok(cond)	ut_asserteq(0, cond)
 

216 lines not on this page · raw message

index 6793e1c..963b16f 100644
@@ -234,7 +234,7 @@ int device_probe(struct udevice *dev)
 void *dev_get_platdata(struct udevice *dev)
 {
 	if (!dev) {
-		dm_warn("%s: null device", __func__);
+		dm_warn("%s: null device\n", __func__);
 		return NULL;
 	}
 

@@ -244,7 +244,7 @@ void *dev_get_platdata(struct udevice *dev)
 void *dev_get_priv(struct udevice *dev)
 {
 	if (!dev) {
-		dm_warn("%s: null device", __func__);
+		dm_warn("%s: null device\n", __func__);
 		return NULL;
 	}
 

@@ -254,7 +254,7 @@ void *dev_get_priv(struct udevice *dev)
 void *dev_get_parentdata(struct udevice *dev)
 {
 	if (!dev) {
-		dm_warn("%s: null device", __func__);
+		dm_warn("%s: null device\n", __func__);
 		return NULL;
 	}
 

index c595f70..36a76a2 100644
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <i2c.h>
 #include <tps6586x.h>
 #include <asm/io.h>
 #include <asm/arch/tegra.h>

@@ -23,9 +24,13 @@
 #define VDD_TRANSITION_STEP	0x06	/* 150mv */
 #define VDD_TRANSITION_RATE	0x06	/* 3.52mv/us */
 
+#define PMI_I2C_ADDRESS	0x34	/* chip requires this address */
+
 int pmu_set_nominal(void)
 {
-	int core, cpu, bus;
+	struct udevice *bus, *dev;
+	int core, cpu;
+	int ret;
 
 	/* by default, the table has been filled with T25 settings */
 	switch (tegra_get_chip_sku()) {

@@ -42,12 +47,18 @@ int pmu_set_nominal(void)
 		return -1;
 	}
 
-	bus = tegra_i2c_get_dvc_bus_num();
-	if (bus == -1) {
+	ret = tegra_i2c_get_dvc_bus(&bus);
+	if (ret) {
 		debug("%s: Cannot find DVC I2C bus\n", __func__);
-		return -1;
+		return ret;
 	}
-	tps6586x_init(bus);
+	ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find DVC I2C chip\n", __func__);
+		return ret;
+	}
+
+	tps6586x_init(dev);
 	tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
 	return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
 				VDD_TRANSITION_RATE, VDD_RELATION);

index 7ca6907..eeeb247 100644
@@ -167,6 +167,6 @@ struct i2c_ctlr {
  *
  * @return number of bus, or -1 if there is no DVC active
  */
-int tegra_i2c_get_dvc_bus_num(void);
+int tegra_i2c_get_dvc_bus(struct udevice **busp);
 
 #endif	/* _TEGRA_I2C_H_ */

index 5870b95..86a0844 100644
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/gp_padctrl.h>
 #include <asm/arch/gpio.h>

@@ -51,8 +52,15 @@ void gpio_early_init(void)
 
 void pmu_write(uchar reg, uchar data)
 {
-	i2c_set_bus_num(4);	/* PMU is on bus 4 */
-	i2c_write(PMU_I2C_ADDRESS, reg, 1, &data, 1);
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find PMIC I2C chip\n", __func__);
+		return;
+	}
+	i2c_write(dev, reg, &data, 1);
 }
 
 /*

index cc0e5e1..026f45c 100644
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/gp_padctrl.h>
 #include "pinmux-config-cardhu.h"

@@ -37,17 +38,23 @@ void pinmux_init(void)
  */
 void board_sdmmc_voltage_init(void)
 {
+	struct udevice *dev;
 	uchar reg, data_buffer[1];
+	int ret;
 	int i;
 
-	i2c_set_bus_num(0);	/* PMU is on bus 0 */
+	ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find PMIC I2C chip\n", __func__);
+		return;
+	}
 
 	/* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */
 	data_buffer[0] = 0x65;
 	reg = 0x32;
 
 	for (i = 0; i < MAX_I2C_RETRY; ++i) {
-		if (i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1))
+		if (i2c_write(dev, reg, data_buffer, 1))
 			udelay(100);
 	}
 

@@ -56,7 +63,7 @@ void board_sdmmc_voltage_init(void)
 	reg = 0x67;
 
 	for (i = 0; i < MAX_I2C_RETRY; ++i) {
-		if (i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1))
+		if (i2c_write(dev, reg, data_buffer, 1))
 			udelay(100);
 	}
 }

index 0e4a65a..4bdbf01 100644
@@ -113,10 +113,6 @@ int board_init(void)
 	power_det_init();
 
 #ifdef CONFIG_SYS_I2C_TEGRA
-#ifndef CONFIG_SYS_I2C_INIT_BOARD
-#error "You must define CONFIG_SYS_I2C_INIT_BOARD to use i2c on Nvidia boards"
-#endif
-	i2c_init_board();
 # ifdef CONFIG_TEGRA_PMU
 	if (pmu_set_nominal())
 		debug("Failed to select nominal voltages\n");

index f2d05af..2a73746 100644
@@ -15,6 +15,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/gp_padctrl.h>
 #include "pinmux-config-dalmore.h"

@@ -50,18 +51,21 @@ void pinmux_init(void)
  */
 void board_sdmmc_voltage_init(void)
 {
+	struct udevice *dev;
 	uchar reg, data_buffer[1];
 	int ret;
 
-	ret = i2c_set_bus_num(0);/* PMU is on bus 0 */
-	if (ret)
-		printf("%s: i2c_set_bus_num returned %d\n", __func__, ret);
+	ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find PMIC I2C chip\n", __func__);
+		return;
+	}
 
 	/* TPS65913: LDO9_VOLTAGE = 3.3V */
 	data_buffer[0] = 0x31;
 	reg = 0x61;
 
-	ret = i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1);
+	ret = i2c_write(dev, reg, data_buffer, 1);
 	if (ret)
 		printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
 			__func__, reg, data_buffer[0], ret);

@@ -70,7 +74,7 @@ void board_sdmmc_voltage_init(void)
 	data_buffer[0] = 0x01;
 	reg = 0x60;
 
-	ret = i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1);
+	ret = i2c_write(dev, reg, data_buffer, 1);
 	if (ret)
 		printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
 			__func__, reg, data_buffer[0], ret);

@@ -79,7 +83,12 @@ void board_sdmmc_voltage_init(void)
 	data_buffer[0] = 0x03;
 	reg = 0x14;
 
-	ret = i2c_write(BAT_I2C_ADDRESS, reg, 1, data_buffer, 1);
+	ret = i2c_get_chip_for_busnum(0, BAT_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find charger I2C chip\n", __func__);
+		return;
+	}
+	ret = i2c_write(dev, reg, data_buffer, 1);
 	if (ret)
 		printf("%s: BAT i2c_write %02X<-%02X returned %d\n",
 			__func__, reg, data_buffer[0], ret);

index 3e9d3d9..3114b20 100644
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/io.h>
 #include <asm/arch/tegra.h>
 #include <asm/arch/clock.h>

@@ -21,23 +22,26 @@
  */
 void pin_mux_mmc(void)
 {
+	struct udevice *dev;
 	uchar val;
 	int ret;
 
 	/* Turn on MAX8907B LDO12 to 2.8V for J40 power */
-	ret = i2c_set_bus_num(0);
-	if (ret)
-		printf("i2c_set_bus_num failed: %d\n", ret);
+	ret = i2c_get_chip_for_busnum(0, 0x3c, &dev);
+	if (ret) {
+		printf("%s: Cannot find MAX8907B I2C chip\n", __func__);
+		return;
+	}
 	val = 0x29;
-	ret = i2c_write(0x3c, 0x46, 1, &val, 1);
+	ret = i2c_write(dev, 0x46, &val, 1);
 	if (ret)
 		printf("i2c_write 0 0x3c 0x46 failed: %d\n", ret);
 	val = 0x00;
-	ret = i2c_write(0x3c, 0x45, 1, &val, 1);
+	ret = i2c_write(dev, 0x45, &val, 1);
 	if (ret)
 		printf("i2c_write 0 0x3c 0x45 failed: %d\n", ret);
 	val = 0x1f;
-	ret = i2c_write(0x3c, 0x44, 1, &val, 1);
+	ret = i2c_write(dev, 0x44, &val, 1);
 	if (ret)
 		printf("i2c_write 0 0x3c 0x44 failed: %d\n", ret);
 

@@ -49,6 +53,7 @@ void pin_mux_mmc(void)
 /* this is a weak define that we are overriding */
 void pin_mux_usb(void)
 {
+	struct udevice *dev;
 	uchar val;
 	int ret;
 

@@ -59,15 +64,17 @@ void pin_mux_usb(void)
 	 */
 
 	/* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */
-	ret = i2c_set_bus_num(0);
-	if (ret)
-		printf("i2c_set_bus_num failed: %d\n", ret);
+	ret = i2c_get_chip_for_busnum(0, 0x20, &dev);
+	if (ret) {
+		printf("%s: Cannot find TAC6416 I2C chip\n", __func__);
+		return;
+	}
 	val = 0x03;
-	ret = i2c_write(0x20, 2, 1, &val, 1);
+	ret = i2c_write(dev, 2, &val, 1);
 	if (ret)
 		printf("i2c_write 0 0x20 2 failed: %d\n", ret);
 	val = 0xfc;
-	ret = i2c_write(0x20, 6, 1, &val, 1);
+	ret = i2c_write(dev, 6, &val, 1);
 	if (ret)
 		printf("i2c_write 0 0x20 6 failed: %d\n", ret);
 }

index b9d694a..5d2c024 100644
@@ -6,7 +6,7 @@
  */
 
 #include <common.h>
-
+#include <dm.h>
 #include <asm/arch/gp_padctrl.h>
 #include <asm/arch/pinmux.h>
 #include <asm/gpio.h>

@@ -38,23 +38,20 @@ void pinmux_init(void)
 #ifdef CONFIG_PCI_TEGRA
 int tegra_pcie_board_init(void)
 {
-	unsigned int old_bus;
+	struct udevice *dev;
 	u8 addr, data[1];
 	int err;
 
-	old_bus = i2c_get_bus_num();
-
-	err = i2c_set_bus_num(0);
+	err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
 	if (err) {
-		debug("failed to set I2C bus\n");
+		debug("%s: Cannot find PMIC I2C chip\n", __func__);
 		return err;
 	}
-
 	/* TPS659110: VDD2_OP_REG = 1.05V */
 	data[0] = 0x27;
 	addr = 0x25;
 
-	err = i2c_write(PMU_I2C_ADDRESS, addr, 1, data, 1);
+	err = i2c_write(dev, addr, data, 1);
 	if (err) {
 		debug("failed to set VDD supply\n");
 		return err;

@@ -64,7 +61,7 @@ int tegra_pcie_board_init(void)
 	data[0] = 0x0D;
 	addr = 0x24;
 
-	err = i2c_write(PMU_I2C_ADDRESS, addr, 1, data, 1);
+	err = i2c_write(dev, addr, data, 1);
 	if (err) {
 		debug("failed to enable VDD supply\n");
 		return err;

@@ -74,14 +71,12 @@ int tegra_pcie_board_init(void)
 	data[0] = 0x0D;
 	addr = 0x35;
 
-	err = i2c_write(PMU_I2C_ADDRESS, addr, 1, data, 1);
+	err = i2c_write(dev, addr, data, 1);
 	if (err) {
 		debug("failed to set AVDD supply\n");
 		return err;
 	}
 
-	i2c_set_bus_num(old_bus);
-
 	return 0;
 }
 

511 lines not on this page · raw message

index d29d969..29bab4c 100644
@@ -10,9 +10,7 @@
 #include <asm/io.h>
 #include <i2c.h>
 
-static int bus_num;		/* I2C bus we are on */
-#define I2C_ADDRESS		0x34	/* chip requires this address */
-static char inited;		/* 1 if we have been inited */
+static struct udevice *tps6586x_dev;
 
 enum {
 	/* Registers that we access */

@@ -37,13 +35,9 @@ static int tps6586x_read(int reg)
 	int	i;
 	uchar	data;
 	int	retval = -1;
-	int	old_bus_num;
-
-	old_bus_num = i2c_get_bus_num();
-	i2c_set_bus_num(bus_num);
 
 	for (i = 0; i < MAX_I2C_RETRY; ++i) {
-		if (!i2c_read(I2C_ADDRESS, reg, 1, &data, 1)) {
+		if (!i2c_read(tps6586x_dev, reg,  &data, 1)) {
 			retval = (int)data;
 			goto exit;
 		}

@@ -53,7 +47,6 @@ static int tps6586x_read(int reg)
 	}
 
 exit:
-	i2c_set_bus_num(old_bus_num);
 	debug("pmu_read %x=%x\n", reg, retval);
 	if (retval < 0)
 		debug("%s: failed to read register %#x: %d\n", __func__, reg,

@@ -65,13 +58,9 @@ static int tps6586x_write(int reg, uchar *data, uint len)
 {
 	int	i;
 	int	retval = -1;
-	int	old_bus_num;
-
-	old_bus_num = i2c_get_bus_num();
-	i2c_set_bus_num(bus_num);
 
 	for (i = 0; i < MAX_I2C_RETRY; ++i) {
-		if (!i2c_write(I2C_ADDRESS, reg, 1, data, len)) {
+		if (!i2c_write(tps6586x_dev, reg, data, len)) {
 			retval = 0;
 			goto exit;
 		}

@@ -81,7 +70,6 @@ static int tps6586x_write(int reg, uchar *data, uint len)
 	}
 
 exit:
-	i2c_set_bus_num(old_bus_num);
 	debug("pmu_write %x=%x: ", reg, retval);
 	for (i = 0; i < len; i++)
 		debug("%x ", data[i]);

@@ -163,7 +151,7 @@ int tps6586x_set_pwm_mode(int mask)
 	uchar val;
 	int ret;
 
-	assert(inited);
+	assert(tps6586x_dev);
 	ret = tps6586x_read(PFM_MODE);
 	if (ret != -1) {
 		val = (uchar)ret;

@@ -184,7 +172,7 @@ int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
 	int sm0, sm1;
 	int bad;
 
-	assert(inited);
+	assert(tps6586x_dev);
 
 	/* get current voltage settings */
 	if (read_voltages(&sm0, &sm1)) {

@@ -255,10 +243,9 @@ int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
 	return bad ? -1 : 0;
 }
 
-int tps6586x_init(int bus)
+int tps6586x_init(struct udevice *dev)
 {
-	bus_num = bus;
-	inited = 1;
+	tps6586x_dev = dev;
 
 	return 0;
 }

index 3cde923..61809fc 100644
@@ -26,10 +26,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 164b2dd..5d765f3 100644
@@ -40,10 +40,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 09129c7..758b7ad 100644
@@ -43,12 +43,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index a582e25..ce6f23b 100644
@@ -25,10 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index ff7ec4a..0b04ee6 100644
@@ -36,12 +36,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index d67c025..a7d7665 100644
@@ -25,12 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index a62bc4e..cf331ab 100644
@@ -25,12 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 04e4f82..5f77051 100644
@@ -37,10 +37,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 51f87da..e37b233 100644
@@ -23,12 +23,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index d690045..0685328 100644
@@ -26,6 +26,7 @@
 #endif
 #define CONFIG_DM_SPI
 #define CONFIG_DM_SPI_FLASH
+#define CONFIG_DM_I2C
 
 #define CONFIG_SYS_TIMER_RATE		1000000
 #define CONFIG_SYS_TIMER_COUNTER	NV_PA_TMRUS_BASE

index 555c237..9eba5d5 100644
@@ -76,9 +76,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra114 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10

index 61e5026..f2b3774 100644
@@ -68,9 +68,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra124 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10

index 21bf977..6330281 100644
@@ -97,9 +97,6 @@
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
-/* Total I2C ports on Tegra20 */
-#define TEGRA_I2C_NUM_CONTROLLERS	4
-
 #define CONFIG_SYS_NAND_SELF_INIT
 #define CONFIG_SYS_NAND_ONFI_DETECTION
 

index 443c842..bfdbeb7 100644
@@ -73,9 +73,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra30 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10

index 7c00642..a254f86 100644
@@ -34,10 +34,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 6897aa8..8880de8 100644
@@ -25,12 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 10e70d2..e083cbd 100644
@@ -26,10 +26,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC

index 78ce428..eefc95f 100644
@@ -44,9 +44,9 @@ int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
  * Set up the TPS6586X I2C bus number. This will be used for all operations
  * on the device. This function must be called before using other functions.
  *
- * @param bus	I2C bus number containing the TPS6586X chip
+ * @param bus	I2C bus containing the TPS6586X chip
  * @return 0 (always succeeds)
  */
-int tps6586x_init(int bus);
+int tps6586x_init(struct udevice *bus);
 
 #endif	/* _TPS6586X_H_ */