ARM: s3c: move into a common directory

s3c24xx and s3c64xx have a lot in common, but are split across three
separate directories, which makes the interaction of the header files
more complicated than necessary.

Move all three directories into a new mach-s3c, with a minimal
set of changes to each file.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[krzk: Rebase, add s3c24xx and s3c64xx suffix to several files, add SPDX
       headers to new files, remove plat-samsung from MAINTAINERS]
Co-developed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
https://lore.kernel.org/r/20200806182059.2431-39-krzk@kernel.org

1 files changed, 0 insertions, 178 deletions

diff --git a/arch/arm/mach-s3c24xx/mach-osiris-dvs.c b/arch/arm/mach-s3c24xx/mach-osiris-dvs.c
deleted file mode 100644
index 1250520b3bcc..000000000000
--- a/arch/arm/mach-s3c24xx/mach-osiris-dvs.c
+++ /dev/null
@@ -1,178 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-//
-// Copyright (c) 2009 Simtec Electronics
-//	http://armlinux.simtec.co.uk/
-//	Ben Dooks <ben@simtec.co.uk>
-//
-// Simtec Osiris Dynamic Voltage Scaling support.
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/cpufreq.h>
-#include <linux/gpio.h>
-
-#include <linux/mfd/tps65010.h>
-
-#include <linux/soc/samsung/s3c-cpu-freq.h>
-#include <mach/gpio-samsung.h>
-
-#define OSIRIS_GPIO_DVS	S3C2410_GPB(5)
-
-static bool dvs_en;
-
-static void osiris_dvs_tps_setdvs(bool on)
-{
-	unsigned vregs1 = 0, vdcdc2 = 0;
-
-	if (!on) {
-		vdcdc2 = TPS_VCORE_DISCH | TPS_LP_COREOFF;
-		vregs1 = TPS_LDO1_OFF;	/* turn off in low-power mode */
-	}
-
-	dvs_en = on;
-	vdcdc2 |= TPS_VCORE_1_3V | TPS_VCORE_LP_1_0V;
-	vregs1 |= TPS_LDO2_ENABLE | TPS_LDO1_ENABLE;
-
-	tps65010_config_vregs1(vregs1);
-	tps65010_config_vdcdc2(vdcdc2);
-}
-
-static bool is_dvs(struct s3c_freq *f)
-{
-	/* at the moment, we assume ARMCLK = HCLK => DVS */
-	return f->armclk == f->hclk;
-}
-
-/* keep track of current state */
-static bool cur_dvs = false;
-
-static int osiris_dvs_notify(struct notifier_block *nb,
-			      unsigned long val, void *data)
-{
-	struct cpufreq_freqs *cf = data;
-	struct s3c_cpufreq_freqs *freqs = to_s3c_cpufreq(cf);
-	bool old_dvs = is_dvs(&freqs->old);
-	bool new_dvs = is_dvs(&freqs->new);
-	int ret = 0;
-
-	if (!dvs_en)
-		return 0;
-
-	printk(KERN_DEBUG "%s: old %ld,%ld new %ld,%ld\n", __func__,
-	       freqs->old.armclk, freqs->old.hclk,
-	       freqs->new.armclk, freqs->new.hclk);
-
-	switch (val) {
-	case CPUFREQ_PRECHANGE:
-		if ((old_dvs && !new_dvs) ||
-		    (cur_dvs && !new_dvs)) {
-			pr_debug("%s: exiting dvs\n", __func__);
-			cur_dvs = false;
-			gpio_set_value(OSIRIS_GPIO_DVS, 1);
-		}
-		break;
-	case CPUFREQ_POSTCHANGE:
-		if ((!old_dvs && new_dvs) ||
-		    (!cur_dvs && new_dvs)) {
-			pr_debug("entering dvs\n");
-			cur_dvs = true;
-			gpio_set_value(OSIRIS_GPIO_DVS, 0);
-		}
-		break;
-	}
-
-	return ret;
-}
-
-static struct notifier_block osiris_dvs_nb = {
-	.notifier_call	= osiris_dvs_notify,
-};
-
-static int osiris_dvs_probe(struct platform_device *pdev)
-{
-	int ret;
-
-	dev_info(&pdev->dev, "initialising\n");
-
-	ret = gpio_request(OSIRIS_GPIO_DVS, "osiris-dvs");
-	if (ret) {
-		dev_err(&pdev->dev, "cannot claim gpio\n");
-		goto err_nogpio;
-	}
-
-	/* start with dvs disabled */
-	gpio_direction_output(OSIRIS_GPIO_DVS, 1);
-
-	ret = cpufreq_register_notifier(&osiris_dvs_nb,
-					CPUFREQ_TRANSITION_NOTIFIER);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to register with cpufreq\n");
-		goto err_nofreq;
-	}
-
-	osiris_dvs_tps_setdvs(true);
-
-	return 0;
-
-err_nofreq:
-	gpio_free(OSIRIS_GPIO_DVS);
-
-err_nogpio:
-	return ret;
-}
-
-static int osiris_dvs_remove(struct platform_device *pdev)
-{
-	dev_info(&pdev->dev, "exiting\n");
-
-	/* disable any current dvs */
-	gpio_set_value(OSIRIS_GPIO_DVS, 1);
-	osiris_dvs_tps_setdvs(false);
-
-	cpufreq_unregister_notifier(&osiris_dvs_nb,
-				    CPUFREQ_TRANSITION_NOTIFIER);
-
-	gpio_free(OSIRIS_GPIO_DVS);
-
-	return 0;
-}
-
-/* the CONFIG_PM block is so small, it isn't worth actually compiling it
- * out if the configuration isn't set. */
-
-static int osiris_dvs_suspend(struct device *dev)
-{
-	gpio_set_value(OSIRIS_GPIO_DVS, 1);
-	osiris_dvs_tps_setdvs(false);
-	cur_dvs = false;
-
-	return 0;
-}
-
-static int osiris_dvs_resume(struct device *dev)
-{
-	osiris_dvs_tps_setdvs(true);
-	return 0;
-}
-
-static const struct dev_pm_ops osiris_dvs_pm = {
-	.suspend	= osiris_dvs_suspend,
-	.resume		= osiris_dvs_resume,
-};
-
-static struct platform_driver osiris_dvs_driver = {
-	.probe		= osiris_dvs_probe,
-	.remove		= osiris_dvs_remove,
-	.driver		= {
-		.name	= "osiris-dvs",
-		.pm	= &osiris_dvs_pm,
-	},
-};
-
-module_platform_driver(osiris_dvs_driver);
-
-MODULE_DESCRIPTION("Simtec OSIRIS DVS support");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:osiris-dvs");