@@ -426,6 +426,28 @@ static inline void tegra_i2c_clock_disable(struct tegra_i2c_dev *i2c_dev)
clk_disable(i2c_dev->fast_clk);
}
+static int tegra_i2c_wait_for_config_load(struct tegra_i2c_dev *i2c_dev)
+{
+ unsigned long reg_offset;
+ u32 val;
+ int err;
+
+ if (i2c_dev->hw->has_config_load_reg) {
+ reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_CONFIG_LOAD);
+ i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
+ err = readx_poll_timeout(readl, i2c_dev->base + reg_offset,
+ 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;
@@ -479,21 +501,9 @@ 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) {
- u32 val;
- unsigned long reg_offset;
-
- reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_CONFIG_LOAD);
- i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
- err = readx_poll_timeout(readl, i2c_dev->base + reg_offset,
- 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;
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> --- Changes in v2: - Remove unnecessary paranthesis and align to 80 characters per line Changes in v3: - Add separate function for config load handling Changes in v4: - Move timeout calculation to separate patch --- drivers/i2c/busses/i2c-tegra.c | 40 +++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-)