From 0bdffe71fddeaa46768a39305797e4512dee0f15 Mon Sep 17 00:00:00 2001
From: Heiko Schocher <hs@denx.de>
Date: Fri, 8 Nov 2013 07:30:53 +0100
Subject: [PATCH] i2c, zynq: convert zynq i2c driver to new
 multibus/multiadapter framework

- add zync i2c driver to new multibus/multiadpater support
- adapted all config files, which uses this driver

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Michal Simek <michal.simek@xilinx.com>
---
 README                 |  5 +++++
 drivers/i2c/Makefile   |  2 +-
 drivers/i2c/zynq_i2c.c | 29 ++++++++++++++++-------------
 include/configs/zynq.h |  8 ++++----
 4 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/README b/README
index 53e56bb187..c97ff0af0b 100644
--- a/README
+++ b/README
@@ -2071,6 +2071,11 @@ CBFS (Coreboot Filesystem) support
 		  - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4
 		  - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4
 
+		- drivers/i2c/zynq_i2c.c
+		  - activate this driver with CONFIG_SYS_I2C_ZYNQ
+		  - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting
+		  - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr
+
 		additional defines:
 
 		CONFIG_SYS_NUM_I2C_BUSES
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 298b17b365..9dd90947d3 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -28,4 +28,4 @@ obj-$(CONFIG_SYS_I2C_RCAR) += rcar_i2c.o
 obj-$(CONFIG_SYS_I2C_SH) += sh_i2c.o
 obj-$(CONFIG_SYS_I2C_SOFT) += soft_i2c.o
 obj-$(CONFIG_SYS_I2C_TEGRA) += tegra_i2c.o
-obj-$(CONFIG_ZYNQ_I2C) += zynq_i2c.o
+obj-$(CONFIG_SYS_I2C_ZYNQ) += zynq_i2c.o
diff --git a/drivers/i2c/zynq_i2c.c b/drivers/i2c/zynq_i2c.c
index ce2d23f725..70a9aeafd5 100644
--- a/drivers/i2c/zynq_i2c.c
+++ b/drivers/i2c/zynq_i2c.c
@@ -74,7 +74,8 @@ static struct zynq_i2c_registers *zynq_i2c =
 	(struct zynq_i2c_registers *)ZYNQ_I2C_BASE;
 
 /* I2C init called by cmd_i2c when doing 'i2c reset'. */
-void i2c_init(int requested_speed, int slaveadd)
+static void zynq_i2c_init(struct i2c_adapter *adap, int requested_speed,
+			  int slaveadd)
 {
 	/* 111MHz / ( (3 * 17) * 22 ) = ~100KHz */
 	writel((16 << ZYNQ_I2C_CONTROL_DIV_B_SHIFT) |
@@ -151,7 +152,7 @@ static u32 zynq_i2c_wait(u32 mask)
  * I2C probe called by cmd_i2c when doing 'i2c probe'.
  * Begin read, nak data byte, end.
  */
-int i2c_probe(u8 dev)
+static int zynq_i2c_probe(struct i2c_adapter *adap, u8 dev)
 {
 	/* Attempt to read a byte */
 	setbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_CLR_FIFO |
@@ -170,7 +171,8 @@ int i2c_probe(u8 dev)
  * I2C read called by cmd_i2c when doing 'i2c read' and by cmd_eeprom.c
  * Begin write, send address byte(s), begin read, receive data bytes, end.
  */
-int i2c_read(u8 dev, uint addr, int alen, u8 *data, int length)
+static int zynq_i2c_read(struct i2c_adapter *adap, u8 dev, uint addr,
+			 int alen, u8 *data, int length)
 {
 	u32 status;
 	u32 i = 0;
@@ -235,7 +237,8 @@ int i2c_read(u8 dev, uint addr, int alen, u8 *data, int length)
  * I2C write called by cmd_i2c when doing 'i2c write' and by cmd_eeprom.c
  * Begin write, send address byte(s), send data bytes, end.
  */
-int i2c_write(u8 dev, uint addr, int alen, u8 *data, int length)
+static int zynq_i2c_write(struct i2c_adapter *adap, u8 dev, uint addr,
+			  int alen, u8 *data, int length)
 {
 	u8 *cur_data = data;
 
@@ -275,16 +278,16 @@ int i2c_write(u8 dev, uint addr, int alen, u8 *data, int length)
 	return 0;
 }
 
-int i2c_set_bus_num(unsigned int bus)
+static unsigned int zynq_i2c_set_bus_speed(struct i2c_adapter *adap,
+			unsigned int speed)
 {
-	/* Only support bus 0 */
-	if (bus > 0)
-		return -1;
-	return 0;
-}
+	if (speed != 1000000)
+		return -EINVAL;
 
-unsigned int i2c_get_bus_num(void)
-{
-	/* Only support bus 0 */
 	return 0;
 }
+
+U_BOOT_I2C_ADAP_COMPLETE(zynq_0, zynq_i2c_init, zynq_i2c_probe, zynq_i2c_read,
+			 zynq_i2c_write, zynq_i2c_set_bus_speed,
+			 CONFIG_SYS_I2C_ZYNQ_SPEED, CONFIG_SYS_I2C_ZYNQ_SLAVE,
+			 0)
diff --git a/include/configs/zynq.h b/include/configs/zynq.h
index 4c6e6e8f6a..82ec826f73 100644
--- a/include/configs/zynq.h
+++ b/include/configs/zynq.h
@@ -60,10 +60,10 @@
 /* I2C */
 #if defined(CONFIG_ZYNQ_I2C0) || defined(CONFIG_ZYNQ_I2C1)
 # define CONFIG_CMD_I2C
-# define CONFIG_ZYNQ_I2C
-# define CONFIG_HARD_I2C
-# define CONFIG_SYS_I2C_SPEED		100000
-# define CONFIG_SYS_I2C_SLAVE		1
+# define CONFIG_SYS_I2C
+# define CONFIG_SYS_I2C_ZYNQ
+# define CONFIG_SYS_I2C_ZYNQ_SPEED		100000
+# define CONFIG_SYS_I2C_ZYNQ_SLAVE		1
 #endif
 
 #if defined(CONFIG_ZYNQ_DCC)
-- 
2.39.5