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authorHeiko Schocher <hs@denx.de>2013-11-08 07:30:53 +0100
committerHeiko Schocher <hs@denx.de>2013-11-13 06:18:27 +0100
commit0bdffe71fddeaa46768a39305797e4512dee0f15 (patch)
treeb05079a1337384867d36663a6531458ae5f0c11a
parent6789e84ecaa8f45d053084e08c381284a04abff7 (diff)
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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>
-rw-r--r--README5
-rw-r--r--drivers/i2c/Makefile2
-rw-r--r--drivers/i2c/zynq_i2c.c29
-rw-r--r--include/configs/zynq.h8
4 files changed, 26 insertions, 18 deletions
diff --git a/README b/README
index 53e56bb..c97ff0a 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 298b17b..9dd9094 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 ce2d23f..70a9aea 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 4c6e6e8..82ec826 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)