i2c: tegra: assume CONFIG_OF, remove platform data

Tegra only supports, and always enables, device tree. Remove all ifdefs
and runtime checks for DT support from the driver. Platform data is
therefore no longer required. Delete the header that defines it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 7 insertions, 19 deletions

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index b714776b6ddd..b60ff90adc39 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -25,7 +25,6 @@
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/i2c-tegra.h>
 #include <linux/of_i2c.h>
 #include <linux/of_device.h>
 #include <linux/module.h>
@@ -172,7 +171,7 @@ struct tegra_i2c_dev {
         u8 *msg_buf;
         size_t msg_buf_remaining;
         int msg_read;
-        unsigned long bus_clk_rate;
+        u32 bus_clk_rate;
         bool is_suspended;
 };
 
@@ -694,7 +693,6 @@ static const struct tegra_i2c_hw_feature tegra114_i2c_hw = {
         .clk_divisor_std_fast_mode = 0x19,
 };
 
-#if defined(CONFIG_OF)
 /* Match table for of_platform binding */
 static const struct of_device_id tegra_i2c_of_match[] = {
         { .compatible = "nvidia,tegra114-i2c", .data = &tegra114_i2c_hw, },
@@ -704,16 +702,13 @@ static const struct of_device_id tegra_i2c_of_match[] = {
         {},
 };
 MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
-#endif
 
 static int tegra_i2c_probe(struct platform_device *pdev)
 {
         struct tegra_i2c_dev *i2c_dev;
-        struct tegra_i2c_platform_data *pdata = pdev->dev.platform_data;
         struct resource *res;
         struct clk *div_clk;
         struct clk *fast_clk;
-        const unsigned int *prop;
         void __iomem *base;
         int irq;
         int ret = 0;
@@ -754,23 +749,16 @@ static int tegra_i2c_probe(struct platform_device *pdev)
         i2c_dev->cont_id = pdev->id;
         i2c_dev->dev = &pdev->dev;
 
-        i2c_dev->bus_clk_rate = 100000; /* default clock rate */
-        if (pdata) {
-                i2c_dev->bus_clk_rate = pdata->bus_clk_rate;
-
-        } else if (i2c_dev->dev->of_node) {    /* if there is a device tree node ... */
-                prop = of_get_property(i2c_dev->dev->of_node,
-                                "clock-frequency", NULL);
-                if (prop)
-                        i2c_dev->bus_clk_rate = be32_to_cpup(prop);
-        }
+        ret = of_property_read_u32(i2c_dev->dev->of_node, "clock-frequency",
+                                        &i2c_dev->bus_clk_rate);
+        if (ret)
+                i2c_dev->bus_clk_rate = 100000; /* default clock rate */
 
         i2c_dev->hw = &tegra20_i2c_hw;
 
         if (pdev->dev.of_node) {
                 const struct of_device_id *match;
-                match = of_match_device(of_match_ptr(tegra_i2c_of_match),
-                                                &pdev->dev);
+                match = of_match_device(tegra_i2c_of_match, &pdev->dev);
                 i2c_dev->hw = match->data;
                 i2c_dev->is_dvc = of_device_is_compatible(pdev->dev.of_node,
                                                 "nvidia,tegra20-i2c-dvc");
@@ -876,7 +864,7 @@ static struct platform_driver tegra_i2c_driver = {
         .driver  = {
                 .name  = "tegra-i2c",
                 .owner = THIS_MODULE,
-                .of_match_table = of_match_ptr(tegra_i2c_of_match),
+                .of_match_table = tegra_i2c_of_match,
                 .pm    = TEGRA_I2C_PM,
         },
 };