[U-Boot] [PATCH v3 07/12] driver:i2c:s3c24x0: adapt driver to new i2c framework
Piotr Wilczek
p.wilczek at samsung.com
Fri May 17 14:55:50 CEST 2013
The s3c24x0 i2c driver is adapted to new i2c framework.
Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
CC: Minkyu Kang <mk7.kang at samsung.com>
Tested on Trats2
Tested-by: Piotr Wilczek <p.wilczek at samsung.com>
---
Changes in v3: None
Changes in v2: None
drivers/i2c/Makefile | 2 +-
drivers/i2c/s3c24x0_i2c.c | 100 ++++++++++++++++++++++++++-------------------
2 files changed, 59 insertions(+), 43 deletions(-)
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 0298e3e..bae7010 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -36,7 +36,6 @@ COBJS-$(CONFIG_DRIVER_OMAP1510_I2C) += omap1510_i2c.o
COBJS-$(CONFIG_DRIVER_OMAP24XX_I2C) += omap24xx_i2c.o
COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += omap24xx_i2c.o
COBJS-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
-COBJS-$(CONFIG_DRIVER_S3C24X0_I2C) += s3c24x0_i2c.o
COBJS-$(CONFIG_S3C44B0_I2C) += s3c44b0_i2c.o
COBJS-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
COBJS-$(CONFIG_U8500_I2C) += u8500_i2c.o
@@ -47,6 +46,7 @@ COBJS-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o
COBJS-$(CONFIG_SYS_I2C_PPC4XX) += ppc4xx_i2c.o
COBJS-$(CONFIG_SYS_I2C_SOFT) += soft_i2c.o
COBJS-$(CONFIG_SYS_I2C_TEGRA) += tegra_i2c.o
+COBJS-$(CONFIG_SYS_I2C_S3C24X0) += s3c24x0_i2c.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c
index 46d2506..97f1c00 100644
--- a/drivers/i2c/s3c24x0_i2c.c
+++ b/drivers/i2c/s3c24x0_i2c.c
@@ -39,8 +39,6 @@
#include <i2c.h>
#include "s3c24x0_i2c.h"
-#ifdef CONFIG_HARD_I2C
-
#define I2C_WRITE 0
#define I2C_READ 1
@@ -123,17 +121,17 @@ static void ReadWriteByte(struct s3c24x0_i2c *i2c)
writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon);
}
-static struct s3c24x0_i2c *get_base_i2c(void)
+static struct s3c24x0_i2c *get_base_i2c(int bus)
{
#ifdef CONFIG_EXYNOS4
struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
+ (EXYNOS4_I2C_SPACING
- * g_current_bus));
+ * bus));
return i2c;
#elif defined CONFIG_EXYNOS5
struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
+ (EXYNOS5_I2C_SPACING
- * g_current_bus));
+ * bus));
return i2c;
#else
return s3c24x0_get_base_i2c();
@@ -167,34 +165,7 @@ static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd)
writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);
}
-/*
- * MULTI BUS I2C support
- */
-
-#ifdef CONFIG_I2C_MULTI_BUS
-int i2c_set_bus_num(unsigned int bus)
-{
- struct s3c24x0_i2c *i2c;
-
- if ((bus < 0) || (bus >= CONFIG_MAX_I2C_NUM)) {
- debug("Bad bus: %d\n", bus);
- return -1;
- }
-
- g_current_bus = bus;
- i2c = get_base_i2c();
- i2c_ch_init(i2c, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-
- return 0;
-}
-
-unsigned int i2c_get_bus_num(void)
-{
- return g_current_bus;
-}
-#endif
-
-void i2c_init(int speed, int slaveadd)
+static void s3c24x0_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
{
struct s3c24x0_i2c *i2c;
#if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5)
@@ -204,7 +175,7 @@ void i2c_init(int speed, int slaveadd)
/* By default i2c channel 0 is the current bus */
g_current_bus = 0;
- i2c = get_base_i2c();
+ i2c = get_base_i2c(adap->hwadapnr);
/* wait for some time to give previous transfer a chance to finish */
i = I2C_TIMEOUT * 1000;
@@ -417,12 +388,12 @@ static int i2c_transfer(struct s3c24x0_i2c *i2c,
return result;
}
-int i2c_probe(uchar chip)
+static int s3c24x0_i2c_probe(struct i2c_adapter *adap, uchar chip)
{
struct s3c24x0_i2c *i2c;
uchar buf[1];
- i2c = get_base_i2c();
+ i2c = get_base_i2c(adap->hwadapnr);
buf[0] = 0;
/*
@@ -433,7 +404,8 @@ int i2c_probe(uchar chip)
return i2c_transfer(i2c, I2C_READ, chip << 1, 0, 0, buf, 1) != I2C_OK;
}
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+static int s3c24x0_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr,
+ int alen, uchar *buffer, int len)
{
struct s3c24x0_i2c *i2c;
uchar xaddr[4];
@@ -467,7 +439,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
chip |= ((addr >> (alen * 8)) &
CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
#endif
- i2c = get_base_i2c();
+ i2c = get_base_i2c(adap->hwadapnr);
ret = i2c_transfer(i2c, I2C_READ, chip << 1, &xaddr[4 - alen], alen,
buffer, len);
if (ret != 0) {
@@ -477,7 +449,8 @@ 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 s3c24x0_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr,
+ int alen, uchar *buffer, int len)
{
struct s3c24x0_i2c *i2c;
uchar xaddr[4];
@@ -509,7 +482,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
chip |= ((addr >> (alen * 8)) &
CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
#endif
- i2c = get_base_i2c();
+ i2c = get_base_i2c(adap->hwadapnr);
return (i2c_transfer
(i2c, I2C_WRITE, chip << 1, &xaddr[4 - alen], alen, buffer,
len) != 0);
@@ -580,10 +553,53 @@ int i2c_reset_port_fdt(const void *blob, int node)
return -1;
}
- i2c_ch_init(i2c->regs, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+ i2c_ch_init(i2c->regs, CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE);
return 0;
}
#endif
-#endif /* CONFIG_HARD_I2C */
+/*
+ * Register soft i2c adapters
+ */
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_0, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 0)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_1, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 1)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_2, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 2)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_3, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 3)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_4, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 4)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_5, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 5)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_6, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 6)
+U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_7, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write, NULL,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE,
+ 7)
--
1.7.9.5
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