ARM: s3c: remove s3c24xx specific hacks

A number of device drivers reference CONFIG_ARM_S3C24XX_CPUFREQ or
similar symbols that are no longer available with the platform gone,
though the drivers themselves are still used on newer platforms,
so remove these hacks.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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;