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-rw-r--r--drivers/i2c/Makefile2
-rw-r--r--drivers/i2c/mxs_i2c.c49
-rw-r--r--include/configs/mxs.h3
3 files changed, 32 insertions, 22 deletions
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 416ea4f2c8..3191680ca2 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -8,7 +8,6 @@
obj-$(CONFIG_BFIN_TWI_I2C) += bfin-twi_i2c.o
obj-$(CONFIG_DW_I2C) += designware_i2c.o
obj-$(CONFIG_I2C_MV) += mv_i2c.o
-obj-$(CONFIG_I2C_MXS) += mxs_i2c.o
obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
obj-$(CONFIG_U8500_I2C) += u8500_i2c.o
@@ -21,6 +20,7 @@ obj-$(CONFIG_SYS_I2C_IHS) += ihs_i2c.o
obj-$(CONFIG_SYS_I2C_KONA) += kona_i2c.o
obj-$(CONFIG_SYS_I2C_MVTWSI) += mvtwsi.o
obj-$(CONFIG_SYS_I2C_MXC) += mxc_i2c.o
+obj-$(CONFIG_SYS_I2C_MXS) += mxs_i2c.o
obj-$(CONFIG_SYS_I2C_OMAP24XX) += omap24xx_i2c.o
obj-$(CONFIG_SYS_I2C_OMAP34XX) += omap24xx_i2c.o
obj-$(CONFIG_SYS_I2C_PPC4XX) += ppc4xx_i2c.o
diff --git a/drivers/i2c/mxs_i2c.c b/drivers/i2c/mxs_i2c.c
index cc313a6937..9594008a9d 100644
--- a/drivers/i2c/mxs_i2c.c
+++ b/drivers/i2c/mxs_i2c.c
@@ -29,11 +29,25 @@ static struct mxs_i2c_regs *mxs_i2c_get_base(struct i2c_adapter *adap)
return (struct mxs_i2c_regs *)MXS_I2C0_BASE;
}
+static unsigned int mxs_i2c_get_bus_speed(void)
+{
+ struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL);
+ uint32_t clk = mxc_get_clock(MXC_XTAL_CLK);
+ uint32_t timing0;
+
+ timing0 = readl(&i2c_regs->hw_i2c_timing0);
+ /*
+ * This is a reverse version of the algorithm presented in
+ * i2c_set_bus_speed(). Please refer there for details.
+ */
+ return clk / ((((timing0 >> 16) - 3) * 2) + 38);
+}
+
static void mxs_i2c_reset(void)
{
struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL);
int ret;
- int speed = i2c_get_bus_speed();
+ int speed = mxs_i2c_get_bus_speed();
ret = mxs_reset_block(&i2c_regs->hw_i2c_ctrl0_reg);
if (ret) {
@@ -165,7 +179,9 @@ err:
return 1;
}
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+static int mxs_i2c_if_read(struct i2c_adapter *adap, uint8_t chip,
+ uint addr, int alen, uint8_t *buffer,
+ int len)
{
struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL);
uint32_t tmp = 0;
@@ -214,7 +230,9 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
return 0;
}
-int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+static int mxs_i2c_if_write(struct i2c_adapter *adap, uint8_t chip,
+ uint addr, int alen, uint8_t *buffer,
+ int len)
{
int ret;
ret = mxs_i2c_write(chip, addr, alen, buffer, len, 1);
@@ -230,7 +248,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
return ret;
}
-int i2c_probe(uchar chip)
+static int mxs_i2c_probe(struct i2c_adapter *adap, uint8_t chip)
{
int ret;
ret = mxs_i2c_write(chip, 0, 1, NULL, 0, 1);
@@ -240,7 +258,7 @@ int i2c_probe(uchar chip)
return ret;
}
-int i2c_set_bus_speed(unsigned int speed)
+static uint mxs_i2c_set_bus_speed(struct i2c_adapter *adap, uint speed)
{
struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL);
/*
@@ -281,24 +299,15 @@ int i2c_set_bus_speed(unsigned int speed)
return 0;
}
-unsigned int i2c_get_bus_speed(void)
-{
- struct mxs_i2c_regs *i2c_regs = mxs_i2c_get_base(NULL);
- uint32_t clk = mxc_get_clock(MXC_XTAL_CLK);
- uint32_t timing0;
-
- timing0 = readl(&i2c_regs->hw_i2c_timing0);
- /*
- * This is a reverse version of the algorithm presented in
- * i2c_set_bus_speed(). Please refer there for details.
- */
- return clk / ((((timing0 >> 16) - 3) * 2) + 38);
-}
-
-void i2c_init(int speed, int slaveadd)
+static void mxs_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr)
{
mxs_i2c_reset();
i2c_set_bus_speed(speed);
return;
}
+
+U_BOOT_I2C_ADAP_COMPLETE(mxs0, mxs_i2c_init, mxs_i2c_probe,
+ mxs_i2c_if_read, mxs_i2c_if_write,
+ mxs_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_SPEED, 0, 0)
diff --git a/include/configs/mxs.h b/include/configs/mxs.h
index eb96fc17f3..dea8227aeb 100644
--- a/include/configs/mxs.h
+++ b/include/configs/mxs.h
@@ -148,7 +148,8 @@
/* I2C */
#ifdef CONFIG_CMD_I2C
-#define CONFIG_I2C_MXS
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXS
#define CONFIG_HARD_I2C
#ifndef CONFIG_SYS_I2C_SPEED
#define CONFIG_SYS_I2C_SPEED 400000