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authorArnd Bergmann <arnd@arndb.de>2022-09-29 15:33:15 +0200
committerArnd Bergmann <arnd@arndb.de>2023-01-16 09:26:05 +0100
commit61b7f8920b176e3cb86c3b5e7c866261720a7917 (patch)
tree5c02c69a09fdd701ceea6b3bf538b28cac989ad7 /arch/arm/mach-s3c/mach-osiris-dvs.c
parent1027b4df8354c55a5ed538e391d4cf9c509b74a7 (diff)
ARM: s3c: remove all s3c24xx support
The platform was deprecated in commit 6a5e69c7ddea ("ARM: s3c: mark as deprecated and schedule removal") and can be removed. This includes all files that are exclusively for s3c24xx and not shared with s3c64xx, as well as the glue logic in Kconfig and the maintainer file entries. Cc: Arnaud Patard <arnaud.patard@rtp-net.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Christer Weinigel <christer@weinigel.se> Cc: Guillaume GOURAT <guillaume.gourat@nexvision.tv> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Simtec Linux Team <linux@simtec.co.uk> Cc: openmoko-kernel@lists.openmoko.org Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-s3c/mach-osiris-dvs.c')
-rw-r--r--arch/arm/mach-s3c/mach-osiris-dvs.c178
1 files changed, 0 insertions, 178 deletions
diff --git a/arch/arm/mach-s3c/mach-osiris-dvs.c b/arch/arm/mach-s3c/mach-osiris-dvs.c
deleted file mode 100644
index 2e283aedab65..000000000000
--- a/arch/arm/mach-s3c/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 "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");