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Commit 89120d66 authored by Shardar Shariff Md's avatar Shardar Shariff Md Committed by Wolfram Sang
Browse files

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: default avatarShardar Shariff Md <smohammed@nvidia.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 2148c01c

drivers/i2c/busses/i2c-tegra.c

+26 −15
Original line number Diff line number Diff line
@@ -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");

	err = tegra_i2c_wait_for_config_load(i2c_dev);

	if (err)

		goto err;

		}

	}



	if (i2c_dev->irq_disabled) {

		i2c_dev->irq_disabled = 0;