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Message-ID: <1461584718-23217-3-git-send-email-smohammed@nvidia.com>
Date: Mon, 25 Apr 2016 17:15:17 +0530
From: Shardar Shariff Md <smohammed@...dia.com>
To: <ldewangan@...dia.com>, <wsa@...-dreams.de>,
<swarren@...dotorg.org>, <thierry.reding@...il.com>,
<gnurou@...il.com>, <linux-i2c@...r.kernel.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<jonathanh@...dia.com>
CC: Shardar Shariff Md <smohammed@...dia.com>
Subject: [PATCH v5 3/4] i2c: tegra: add separate function for config_load
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md <smohammed@...dia.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 | 38 ++++++++++++++++++++++++--------------
1 file changed, 24 insertions(+), 14 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 2869445..a6a317b 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -426,6 +426,27 @@ 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)
+{
+ if (i2c_dev->hw->has_config_load_reg) {
+ u32 val;
+ int err;
+
+ i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
+ err = readx_poll_timeout(readl, i2c_dev->base +
+ tegra_i2c_reg_addr(i2c_dev,
+ I2C_CONFIG_LOAD), 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;
@@ -479,20 +500,9 @@ 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;
-
- i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
- err = readx_poll_timeout(readl, i2c_dev->base +
- tegra_i2c_reg_addr(i2c_dev,
- I2C_CONFIG_LOAD), 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) {
--
1.8.1.5
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