These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / i2c / busses / i2c-rcar.c

diff --git a/kernel/drivers/i2c/busses/i2c-rcar.c b/kernel/drivers/i2c/busses/i2c-rcar.c
index 5a84bea..599c0d7 100644 (file)
--- a/kernel/drivers/i2c/busses/i2c-rcar.c
+++ b/kernel/drivers/i2c/busses/i2c-rcar.c
@@ -27,7 +27,6 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/i2c.h>
-#include <linux/i2c/i2c-rcar.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
@@ -103,6 +102,7 @@
 enum rcar_i2c_type {
        I2C_RCAR_GEN1,
        I2C_RCAR_GEN2,
+       I2C_RCAR_GEN3,
 };
 
 struct rcar_i2c_priv {
@@ -178,6 +178,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv,
                cdf_width = 2;
                break;
        case I2C_RCAR_GEN2:
+       case I2C_RCAR_GEN3:
                cdf_width = 3;
                break;
        default:
@@ -490,7 +491,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
        struct rcar_i2c_priv *priv = i2c_get_adapdata(adap);
        struct device *dev = rcar_i2c_priv_to_dev(priv);
        unsigned long flags;
-       int i, ret, timeout;
+       int i, ret;
+       long timeout;
 
        pm_runtime_get_sync(dev);
 
@@ -532,7 +534,7 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
 
                timeout = wait_event_timeout(priv->wait,
                                             rcar_i2c_flags_has(priv, ID_DONE),
-                                            5 * HZ);
+                                            adap->timeout);
                if (!timeout) {
                        ret = -ETIMEDOUT;
                        break;
@@ -574,7 +576,7 @@ static int rcar_reg_slave(struct i2c_client *slave)
        if (slave->flags & I2C_CLIENT_TEN)
                return -EAFNOSUPPORT;
 
-       pm_runtime_forbid(rcar_i2c_priv_to_dev(priv));
+       pm_runtime_get_sync(rcar_i2c_priv_to_dev(priv));
 
        priv->slave = slave;
        rcar_i2c_write(priv, ICSAR, slave->addr);
@@ -596,7 +598,7 @@ static int rcar_unreg_slave(struct i2c_client *slave)
 
        priv->slave = NULL;
 
-       pm_runtime_allow(rcar_i2c_priv_to_dev(priv));
+       pm_runtime_put(rcar_i2c_priv_to_dev(priv));
 
        return 0;
 }
@@ -604,7 +606,8 @@ static int rcar_unreg_slave(struct i2c_client *slave)
 static u32 rcar_i2c_func(struct i2c_adapter *adap)
 {
        /* This HW can't do SMBUS_QUICK and NOSTART */
-       return I2C_FUNC_I2C | (I2C_FUNC_SMBUS_EMUL & ~I2C_FUNC_SMBUS_QUICK);
+       return I2C_FUNC_I2C | I2C_FUNC_SLAVE |
+               (I2C_FUNC_SMBUS_EMUL & ~I2C_FUNC_SMBUS_QUICK);
 }
 
 static const struct i2c_algorithm rcar_i2c_algo = {
@@ -623,13 +626,13 @@ static const struct of_device_id rcar_i2c_dt_ids[] = {
        { .compatible = "renesas,i2c-r8a7792", .data = (void *)I2C_RCAR_GEN2 },
        { .compatible = "renesas,i2c-r8a7793", .data = (void *)I2C_RCAR_GEN2 },
        { .compatible = "renesas,i2c-r8a7794", .data = (void *)I2C_RCAR_GEN2 },
+       { .compatible = "renesas,i2c-r8a7795", .data = (void *)I2C_RCAR_GEN3 },
        {},
 };
 MODULE_DEVICE_TABLE(of, rcar_i2c_dt_ids);
 
 static int rcar_i2c_probe(struct platform_device *pdev)
 {
-       struct i2c_rcar_platform_data *pdata = dev_get_platdata(&pdev->dev);
        struct rcar_i2c_priv *priv;
        struct i2c_adapter *adap;
        struct resource *res;
@@ -648,15 +651,9 @@ static int rcar_i2c_probe(struct platform_device *pdev)
        }
 
        bus_speed = 100000; /* default 100 kHz */
-       ret = of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed);
-       if (ret < 0 && pdata && pdata->bus_speed)
-               bus_speed = pdata->bus_speed;
+       of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed);
 
-       if (pdev->dev.of_node)
-               priv->devtype = (long)of_match_device(rcar_i2c_dt_ids,
-                                                     dev)->data;
-       else
-               priv->devtype = platform_get_device_id(pdev)->driver_data;
+       priv->devtype = (enum rcar_i2c_type)of_match_device(rcar_i2c_dt_ids, dev)->data;
 
        ret = rcar_i2c_clock_calculate(priv, bus_speed, dev);
        if (ret < 0)
@@ -688,15 +685,16 @@ static int rcar_i2c_probe(struct platform_device *pdev)
                return ret;
        }
 
+       pm_runtime_enable(dev);
+       platform_set_drvdata(pdev, priv);
+
        ret = i2c_add_numbered_adapter(adap);
        if (ret < 0) {
                dev_err(dev, "reg adap failed: %d\n", ret);
+               pm_runtime_disable(dev);
                return ret;
        }
 
-       pm_runtime_enable(dev);
-       platform_set_drvdata(pdev, priv);
-
        dev_info(dev, "probed\n");
 
        return 0;
@@ -713,14 +711,6 @@ static int rcar_i2c_remove(struct platform_device *pdev)
        return 0;
 }
 
-static struct platform_device_id rcar_i2c_id_table[] = {
-       { "i2c-rcar",           I2C_RCAR_GEN1 },
-       { "i2c-rcar_gen1",      I2C_RCAR_GEN1 },
-       { "i2c-rcar_gen2",      I2C_RCAR_GEN2 },
-       {},
-};
-MODULE_DEVICE_TABLE(platform, rcar_i2c_id_table);
-
 static struct platform_driver rcar_i2c_driver = {
        .driver = {
                .name   = "i2c-rcar",
@@ -728,7 +718,6 @@ static struct platform_driver rcar_i2c_driver = {
        },
        .probe          = rcar_i2c_probe,
        .remove         = rcar_i2c_remove,
-       .id_table       = rcar_i2c_id_table,
 };
 
 module_platform_driver(rcar_i2c_driver);