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| author | Heiko Schocher <hs@denx.de> | 2013-11-08 07:30:53 +0100 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2013-11-13 06:18:27 +0100 |
| commit | 0bdffe71fddeaa46768a39305797e4512dee0f15 (patch) | |
| tree | b05079a1337384867d36663a6531458ae5f0c11a | |
| parent | 6789e84ecaa8f45d053084e08c381284a04abff7 (diff) | |
| download | u-boot-imx-0bdffe71fddeaa46768a39305797e4512dee0f15.zip u-boot-imx-0bdffe71fddeaa46768a39305797e4512dee0f15.tar.gz u-boot-imx-0bdffe71fddeaa46768a39305797e4512dee0f15.tar.bz2 | |
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-- | README | 5 | ||||
| -rw-r--r-- | drivers/i2c/Makefile | 2 | ||||
| -rw-r--r-- | drivers/i2c/zynq_i2c.c | 29 | ||||
| -rw-r--r-- | include/configs/zynq.h | 8 |
4 files changed, 26 insertions, 18 deletions
@@ -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) |