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-rw-r--r--drivers/i2c/busses/Kconfig3
-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c72
2 files changed, 1 insertions, 74 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 72b3b44b5be7..d4975444a32d 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -1010,8 +1010,7 @@ config I2C_RZV2M
config I2C_S3C2410
tristate "S3C/Exynos I2C Driver"
- depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || \
- ARCH_S5PV210 || COMPILE_TEST
+ depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST
help
Say Y here to include support for I2C controller in the
Samsung SoCs (S3C, S5Pv210, Exynos).
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 36dab9cd208c..45e9df81345a 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -116,9 +116,6 @@ struct s3c24xx_i2c {
struct s3c2410_platform_i2c *pdata;
struct gpio_desc *gpios[2];
struct pinctrl *pctrl;
-#if defined(CONFIG_ARM_S3C24XX_CPUFREQ)
- struct notifier_block freq_transition;
-#endif
struct regmap *sysreg;
unsigned int sys_i2c_cfg;
};
@@ -885,65 +882,6 @@ static int s3c24xx_i2c_clockrate(struct s3c24xx_i2c *i2c, unsigned int *got)
return 0;
}
-#if defined(CONFIG_ARM_S3C24XX_CPUFREQ)
-
-#define freq_to_i2c(_n) container_of(_n, struct s3c24xx_i2c, freq_transition)
-
-static int s3c24xx_i2c_cpufreq_transition(struct notifier_block *nb,
- unsigned long val, void *data)
-{
- struct s3c24xx_i2c *i2c = freq_to_i2c(nb);
- unsigned int got;
- int delta_f;
- int ret;
-
- delta_f = clk_get_rate(i2c->clk) - i2c->clkrate;
-
- /* if we're post-change and the input clock has slowed down
- * or at pre-change and the clock is about to speed up, then
- * adjust our clock rate. <0 is slow, >0 speedup.
- */
-
- if ((val == CPUFREQ_POSTCHANGE && delta_f < 0) ||
- (val == CPUFREQ_PRECHANGE && delta_f > 0)) {
- i2c_lock_bus(&i2c->adap, I2C_LOCK_ROOT_ADAPTER);
- ret = s3c24xx_i2c_clockrate(i2c, &got);
- i2c_unlock_bus(&i2c->adap, I2C_LOCK_ROOT_ADAPTER);
-
- if (ret < 0)
- dev_err(i2c->dev, "cannot find frequency (%d)\n", ret);
- else
- dev_info(i2c->dev, "setting freq %d\n", got);
- }
-
- return 0;
-}
-
-static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c)
-{
- i2c->freq_transition.notifier_call = s3c24xx_i2c_cpufreq_transition;
-
- return cpufreq_register_notifier(&i2c->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
-}
-
-static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c)
-{
- cpufreq_unregister_notifier(&i2c->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
-}
-
-#else
-static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c)
-{
- return 0;
-}
-
-static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c)
-{
-}
-#endif
-
#ifdef CONFIG_OF
static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c)
{
@@ -1152,13 +1090,6 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
}
}
- ret = s3c24xx_i2c_register_cpufreq(i2c);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to register cpufreq notifier\n");
- clk_unprepare(i2c->clk);
- return ret;
- }
-
/*
* Note, previous versions of the driver used i2c_add_adapter()
* to add the bus at any number. We now pass the bus number via
@@ -1175,7 +1106,6 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
ret = i2c_add_numbered_adapter(&i2c->adap);
if (ret < 0) {
pm_runtime_disable(&pdev->dev);
- s3c24xx_i2c_deregister_cpufreq(i2c);
clk_unprepare(i2c->clk);
return ret;
}
@@ -1192,8 +1122,6 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
- s3c24xx_i2c_deregister_cpufreq(i2c);
-
i2c_del_adapter(&i2c->adap);
return 0;