Hello Hans,
Am 18.03.2014 00:00, schrieb Hans de Goede:
From: Henrik Nordstrom<hen...@henriknordstrom.net>
Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.
As well as the following signed-off-by the sunxi branch shows commits to
the sunxi_i2c.c file by:
Stefan Roese<s...@denx.de>
Signed-off-by: Henrik Nordstrom<hen...@henriknordstrom.net>
Signed-off-by: Oliver Schinagl<oli...@schinagl.nl>
Signed-off-by: Hans de Goede<hdego...@redhat.com>
---
arch/arm/cpu/armv7/sunxi/board.c | 6 +
arch/arm/include/asm/arch-sunxi/i2c.h | 169 ++++++++++++++++++++++
drivers/i2c/Makefile | 1 +
drivers/i2c/sunxi_i2c.c | 260 ++++++++++++++++++++++++++++++++++
include/configs/sunxi-common.h | 8 ++
5 files changed, 444 insertions(+)
create mode 100644 arch/arm/include/asm/arch-sunxi/i2c.h
create mode 100644 drivers/i2c/sunxi_i2c.c
[...]
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index fa3a875..2a44db4 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
obj-$(CONFIG_U8500_I2C) += u8500_i2c.o
obj-$(CONFIG_SH_SH7734_I2C) += sh_sh7734_i2c.o
+obj-$(CONFIG_SUNXI_I2C) += sunxi_i2c.o
please use:
CONFIG_SYS_I2C_SUNXI
obj-$(CONFIG_SYS_I2C) += i2c_core.o
obj-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o
obj-$(CONFIG_SYS_I2C_FTI2C010) += fti2c010.o
diff --git a/drivers/i2c/sunxi_i2c.c b/drivers/i2c/sunxi_i2c.c
new file mode 100644
index 0000000..9a542f6
--- /dev/null
+++ b/drivers/i2c/sunxi_i2c.c
@@ -0,0 +1,260 @@
+/*
+ * (C) Copyright 2012 Henrik Nordstrom<hen...@henriknordstrom.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include<common.h>
+#include<i2c.h>
+#include<asm/io.h>
+#include<asm/arch/clock.h>
+#include<asm/arch/cpu.h>
+#include<asm/arch/gpio.h>
+#include<asm/arch/i2c.h>
+
+static struct i2c __attribute__ ((section(".data"))) *i2c_base =
+ (struct i2c *)0x1c2ac00;
Please no magic numbers, use a define instead.
+void i2c_init(int speed, int slaveaddr)
[...]
+int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ int rc = i2c_do_write(chip, addr, alen, buffer, len);
+
+ i2c_stop();
+
+ return rc;
+}
Please update to the new i2c multibus/multiadpater framework
Dummy question, there is another "twi" driver in drivers/i2c
bfin-twi_i2c.c
are they compatible?
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index fe41b89..1f2bcb5 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -176,6 +176,14 @@
#undef CONFIG_CMD_NET
#undef CONFIG_CMD_NFS
+/* I2C */
+#define CONFIG_SPL_I2C_SUPPORT
+#define CONFIG_SYS_I2C_SPEED 400000
+#define CONFIG_HARD_I2C
NACK, please use no longer HARD_I2C, switch instead to
CONFIG_SYS_I2C
+#define CONFIG_SUNXI_I2C
+#define CONFIG_SYS_I2C_SLAVE 0x7f
+#define CONFIG_CMD_I2C
+
#ifndef CONFIG_CONS_INDEX
#define CONFIG_CONS_INDEX 1 /* UART0 */
#endif
bye,
Heiko
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