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Message-Id: <20200218171321.30990-5-robh@kernel.org>
Date: Tue, 18 Feb 2020 11:13:14 -0600
From: Rob Herring <robh@...nel.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
soc@...nel.org, Andre Przywara <andre.przywara@....com>,
Robert Richter <rrichter@...vell.com>,
Jon Loeliger <jdl@....com>, Alexander Graf <graf@...zon.com>,
Matthias Brugger <mbrugger@...e.com>,
Mark Langsdorf <mlangsdo@...hat.com>
Cc: Alex Williamson <alex.williamson@...hat.com>,
Borislav Petkov <bp@...en8.de>,
Cornelia Huck <cohuck@...hat.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
"David S. Miller" <davem@...emloft.net>,
devicetree@...r.kernel.org, Eric Auger <eric.auger@...hat.com>,
iommu@...ts.linux-foundation.org,
James Morse <james.morse@....com>,
Jens Axboe <axboe@...nel.dk>, Joerg Roedel <joro@...tes.org>,
kvm@...r.kernel.org, linux-clk@...r.kernel.org,
linux-edac@...r.kernel.org, linux-ide@...r.kernel.org,
linux-pm@...r.kernel.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
netdev@...r.kernel.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
Robin Murphy <robin.murphy@....com>,
Stephen Boyd <sboyd@...nel.org>,
Tony Luck <tony.luck@...el.com>,
Viresh Kumar <viresh.kumar@...aro.org>,
Will Deacon <will@...nel.org>
Subject: [RFC PATCH 04/11] cpufreq: Remove Calxeda driver
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: linux-pm@...r.kernel.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
Do not apply yet.
drivers/cpufreq/Kconfig.arm | 10 ---
drivers/cpufreq/Makefile | 3 +-
drivers/cpufreq/cpufreq-dt-platdev.c | 3 -
drivers/cpufreq/highbank-cpufreq.c | 106 ---------------------------
4 files changed, 1 insertion(+), 121 deletions(-)
delete mode 100644 drivers/cpufreq/highbank-cpufreq.c
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 3858d86cf409..27fdd5ac21da 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -79,16 +79,6 @@ config ARM_BRCMSTB_AVS_CPUFREQ
Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
-config ARM_HIGHBANK_CPUFREQ
- tristate "Calxeda Highbank-based"
- depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
- default m
- help
- This adds the CPUFreq driver for Calxeda Highbank SoC
- based boards.
-
- If in doubt, say N.
-
config ARM_IMX6Q_CPUFREQ
tristate "Freescale i.MX6 cpufreq support"
depends on ARCH_MXC
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index f6670c4abbb0..47d773b9312a 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -5,7 +5,7 @@ obj-$(CONFIG_CPU_FREQ) += cpufreq.o freq_table.o
# CPUfreq stats
obj-$(CONFIG_CPU_FREQ_STAT) += cpufreq_stats.o
-# CPUfreq governors
+# CPUfreq governors
obj-$(CONFIG_CPU_FREQ_GOV_PERFORMANCE) += cpufreq_performance.o
obj-$(CONFIG_CPU_FREQ_GOV_POWERSAVE) += cpufreq_powersave.o
obj-$(CONFIG_CPU_FREQ_GOV_USERSPACE) += cpufreq_userspace.o
@@ -52,7 +52,6 @@ obj-$(CONFIG_ARM_ARMADA_8K_CPUFREQ) += armada-8k-cpufreq.o
obj-$(CONFIG_ARM_BRCMSTB_AVS_CPUFREQ) += brcmstb-avs-cpufreq.o
obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o
obj-$(CONFIG_ARCH_DAVINCI) += davinci-cpufreq.o
-obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ) += highbank-cpufreq.o
obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o
obj-$(CONFIG_ARM_IMX_CPUFREQ_DT) += imx-cpufreq-dt.o
obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index f2ae9cd455c1..274294f83e7c 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -102,9 +102,6 @@ static const struct of_device_id whitelist[] __initconst = {
static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "allwinner,sun50i-h6", },
- { .compatible = "calxeda,highbank", },
- { .compatible = "calxeda,ecx-2000", },
-
{ .compatible = "fsl,imx7d", },
{ .compatible = "fsl,imx8mq", },
{ .compatible = "fsl,imx8mm", },
diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c
deleted file mode 100644
index 5a7f6dafcddb..000000000000
--- a/drivers/cpufreq/highbank-cpufreq.c
+++ /dev/null
@@ -1,106 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012 Calxeda, Inc.
- *
- * This driver provides the clk notifier callbacks that are used when
- * the cpufreq-dt driver changes to frequency to alert the highbank
- * EnergyCore Management Engine (ECME) about the need to change
- * voltage. The ECME interfaces with the actual voltage regulators.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/cpu.h>
-#include <linux/err.h>
-#include <linux/of.h>
-#include <linux/pl320-ipc.h>
-#include <linux/platform_device.h>
-
-#define HB_CPUFREQ_CHANGE_NOTE 0x80000001
-#define HB_CPUFREQ_IPC_LEN 7
-#define HB_CPUFREQ_VOLT_RETRIES 15
-
-static int hb_voltage_change(unsigned int freq)
-{
- u32 msg[HB_CPUFREQ_IPC_LEN] = {HB_CPUFREQ_CHANGE_NOTE, freq / 1000000};
-
- return pl320_ipc_transmit(msg);
-}
-
-static int hb_cpufreq_clk_notify(struct notifier_block *nb,
- unsigned long action, void *hclk)
-{
- struct clk_notifier_data *clk_data = hclk;
- int i = 0;
-
- if (action == PRE_RATE_CHANGE) {
- if (clk_data->new_rate > clk_data->old_rate)
- while (hb_voltage_change(clk_data->new_rate))
- if (i++ > HB_CPUFREQ_VOLT_RETRIES)
- return NOTIFY_BAD;
- } else if (action == POST_RATE_CHANGE) {
- if (clk_data->new_rate < clk_data->old_rate)
- while (hb_voltage_change(clk_data->new_rate))
- if (i++ > HB_CPUFREQ_VOLT_RETRIES)
- return NOTIFY_BAD;
- }
-
- return NOTIFY_DONE;
-}
-
-static struct notifier_block hb_cpufreq_clk_nb = {
- .notifier_call = hb_cpufreq_clk_notify,
-};
-
-static int hb_cpufreq_driver_init(void)
-{
- struct platform_device_info devinfo = { .name = "cpufreq-dt", };
- struct device *cpu_dev;
- struct clk *cpu_clk;
- struct device_node *np;
- int ret;
-
- if ((!of_machine_is_compatible("calxeda,highbank")) &&
- (!of_machine_is_compatible("calxeda,ecx-2000")))
- return -ENODEV;
-
- cpu_dev = get_cpu_device(0);
- if (!cpu_dev) {
- pr_err("failed to get highbank cpufreq device\n");
- return -ENODEV;
- }
-
- np = of_node_get(cpu_dev->of_node);
- if (!np) {
- pr_err("failed to find highbank cpufreq node\n");
- return -ENOENT;
- }
-
- cpu_clk = clk_get(cpu_dev, NULL);
- if (IS_ERR(cpu_clk)) {
- ret = PTR_ERR(cpu_clk);
- pr_err("failed to get cpu0 clock: %d\n", ret);
- goto out_put_node;
- }
-
- ret = clk_notifier_register(cpu_clk, &hb_cpufreq_clk_nb);
- if (ret) {
- pr_err("failed to register clk notifier: %d\n", ret);
- goto out_put_node;
- }
-
- /* Instantiate cpufreq-dt */
- platform_device_register_full(&devinfo);
-
-out_put_node:
- of_node_put(np);
- return ret;
-}
-module_init(hb_cpufreq_driver_init);
-
-MODULE_AUTHOR("Mark Langsdorf <mark.langsdorf@...xeda.com>");
-MODULE_DESCRIPTION("Calxeda Highbank cpufreq driver");
-MODULE_LICENSE("GPL");
--
2.20.1
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