drivers: i2c: davinci_i2c: Update davinci i2c driver to driver model

Convert davinci i2c driver to driver model.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

diff --git a/drivers/i2c/davinci_i2c.c b/drivers/i2c/davinci_i2c.c
index a6bce26171e9d5f9e7a904ab8039d98ca08fa2f4..4471193402e5261959066eaa01998117d50b0e5d 100644 (file)
--- a/drivers/i2c/davinci_i2c.c
+++ b/drivers/i2c/davinci_i2c.c
@@ -14,11 +14,21 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <dm.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/i2c_defs.h>
 #include <asm/io.h>
 #include "davinci_i2c.h"
 
+#ifdef CONFIG_DM_I2C
+/* Information about i2c controller */
+struct i2c_bus {
+       int                     id;
+       uint                    speed;
+       struct i2c_regs         *regs;
+};
+#endif
+
 #define CHECK_NACK() \
        do {\
                if (tmp & (I2C_TIMEOUT | I2C_STAT_NACK)) {\
@@ -27,8 +37,6 @@
                } \
        } while (0)
 
-static struct i2c_regs *davinci_get_base(struct i2c_adapter *adap);
-
 static int _wait_for_bus(struct i2c_regs *i2c_base)
 {
        int     stat, timeout;
@@ -331,6 +339,7 @@ static int _davinci_i2c_probe_chip(struct i2c_regs *i2c_base, uint8_t chip)
        return rc;
 }
 
+#ifndef CONFIG_DM_I2C
 static struct i2c_regs *davinci_get_base(struct i2c_adapter *adap)
 {
        switch (adap->hwadapnr) {
@@ -420,3 +429,82 @@ U_BOOT_I2C_ADAP_COMPLETE(davinci_2, davinci_i2c_init, davinci_i2c_probe_chip,
                         CONFIG_SYS_DAVINCI_I2C_SLAVE2,
                         2)
 #endif
+
+#else /* CONFIG_DM_I2C */
+
+static int davinci_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
+                         int nmsgs)
+{
+       struct i2c_bus *i2c_bus = dev_get_priv(bus);
+       int ret;
+
+       debug("i2c_xfer: %d messages\n", nmsgs);
+       for (; nmsgs > 0; nmsgs--, msg++) {
+               debug("i2c_xfer: chip=0x%x, len=0x%x\n", msg->addr, msg->len);
+               if (msg->flags & I2C_M_RD) {
+                       ret = _davinci_i2c_read(i2c_bus->regs, msg->addr,
+                               0, 0, msg->buf, msg->len);
+               } else {
+                       ret = _davinci_i2c_write(i2c_bus->regs, msg->addr,
+                               0, 0, msg->buf, msg->len);
+               }
+               if (ret) {
+                       debug("i2c_write: error sending\n");
+                       return -EREMOTEIO;
+               }
+       }
+
+       return ret;
+}
+
+static int davinci_i2c_set_speed(struct udevice *dev, uint speed)
+{
+       struct i2c_bus *i2c_bus = dev_get_priv(dev);
+
+       i2c_bus->speed = speed;
+       return _davinci_i2c_setspeed(i2c_bus->regs, speed);
+}
+
+static int davinci_i2c_probe(struct udevice *dev)
+{
+       struct i2c_bus *i2c_bus = dev_get_priv(dev);
+
+       i2c_bus->id = dev->seq;
+       i2c_bus->regs = (struct i2c_regs *)dev_get_addr(dev);
+
+       i2c_bus->speed = 100000;
+        _davinci_i2c_init(i2c_bus->regs, i2c_bus->speed, 0);
+
+       return 0;
+}
+
+static int davinci_i2c_probe_chip(struct udevice *bus, uint chip_addr,
+                                 uint chip_flags)
+{
+       struct i2c_bus *i2c_bus = dev_get_priv(bus);
+
+       return _davinci_i2c_probe_chip(i2c_bus->regs, chip_addr);
+}
+
+static const struct dm_i2c_ops davinci_i2c_ops = {
+       .xfer           = davinci_i2c_xfer,
+       .probe_chip     = davinci_i2c_probe_chip,
+       .set_bus_speed  = davinci_i2c_set_speed,
+};
+
+static const struct udevice_id davinci_i2c_ids[] = {
+       { .compatible = "ti,davinci-i2c"},
+       { .compatible = "ti,keystone-i2c"},
+       { }
+};
+
+U_BOOT_DRIVER(i2c_davinci) = {
+       .name   = "i2c_davinci",
+       .id     = UCLASS_I2C,
+       .of_match = davinci_i2c_ids,
+       .probe  = davinci_i2c_probe,
+       .priv_auto_alloc_size = sizeof(struct i2c_bus),
+       .ops    = &davinci_i2c_ops,
+};
+
+#endif /* CONFIG_DM_I2C */