i2c: tegra: add separate function for config_load programing

Define separate function for configuration load register handling
to make it use by different functions later.

Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 07a39b7..daab0ce 100644 (file)
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -446,6 +446,29 @@ static int tegra_i2c_runtime_suspend(struct device *dev)
        return pinctrl_pm_select_idle_state(i2c_dev->dev);
 }
 
+static int tegra_i2c_wait_for_config_load(struct tegra_i2c_dev *i2c_dev)
+{
+       unsigned long reg_offset;
+       void __iomem *addr;
+       u32 val;
+       int err;
+
+       if (i2c_dev->hw->has_config_load_reg) {
+               reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_CONFIG_LOAD);
+               addr = i2c_dev->base + reg_offset;
+               i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
+               err = readl_poll_timeout(addr, val, val == 0, 1000,
+                                        I2C_CONFIG_LOAD_TIMEOUT);
+               if (err) {
+                       dev_warn(i2c_dev->dev,
+                                "timeout waiting for config load\n");
+                       return err;
+               }
+       }
+
+       return 0;
+}
+
 static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
 {
        u32 val;
@@ -500,21 +523,9 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
        if (i2c_dev->is_multimaster_mode && i2c_dev->hw->has_slcg_override_reg)
                i2c_writel(i2c_dev, I2C_MST_CORE_CLKEN_OVR, I2C_CLKEN_OVERRIDE);
 
-       if (i2c_dev->hw->has_config_load_reg) {
-               unsigned long reg_offset;
-               void __iomem *addr;
-
-               reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_CONFIG_LOAD);
-               addr = i2c_dev->base + reg_offset;
-               i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
-               err = readl_poll_timeout(addr, val, val == 0, 1000,
-                                        I2C_CONFIG_LOAD_TIMEOUT);
-               if (err) {
-                       dev_warn(i2c_dev->dev,
-                                "timeout waiting for config load\n");
-                       goto err;
-               }
-       }
+       err = tegra_i2c_wait_for_config_load(i2c_dev);
+       if (err)
+               goto err;
 
        if (i2c_dev->irq_disabled) {
                i2c_dev->irq_disabled = 0;