aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch')
-rw-r--r--target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch727
1 files changed, 0 insertions, 727 deletions
diff --git a/target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch b/target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch
deleted file mode 100644
index 4d8ed58334..0000000000
--- a/target/linux/mediatek/patches-4.4/0077-cpufreq-mediatek-add-driver.patch
+++ /dev/null
@@ -1,727 +0,0 @@
-From d1421147c328a7d06d9a6b8330c73e45139b1e48 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Wed, 30 Mar 2016 23:48:53 +0200
-Subject: [PATCH 77/78] cpufreq: mediatek: add driver
-
-Signed-off-by: John Crispin <john@phrozen.org>
----
- arch/arm/boot/dts/mt7623-evb.dts | 160 ++++++++++++----
- arch/arm/boot/dts/mt7623.dtsi | 50 ++++-
- drivers/cpufreq/Kconfig.arm | 9 +
- drivers/cpufreq/Makefile | 1 +
- drivers/cpufreq/mt7623-cpufreq.c | 389 ++++++++++++++++++++++++++++++++++++++
- 5 files changed, 570 insertions(+), 39 deletions(-)
- create mode 100644 drivers/cpufreq/mt7623-cpufreq.c
-
-diff --git a/arch/arm/boot/dts/mt7623-evb.dts b/arch/arm/boot/dts/mt7623-evb.dts
-index bc2b3f1..4a433f0 100644
---- a/arch/arm/boot/dts/mt7623-evb.dts
-+++ b/arch/arm/boot/dts/mt7623-evb.dts
-@@ -39,6 +39,22 @@
- };
- };
-
-+&cpu0 {
-+ proc-supply = <&mt6323_vproc_reg>;
-+};
-+
-+&cpu1 {
-+ proc-supply = <&mt6323_vproc_reg>;
-+};
-+
-+&cpu2 {
-+ proc-supply = <&mt6323_vproc_reg>;
-+};
-+
-+&cpu3 {
-+ proc-supply = <&mt6323_vproc_reg>;
-+};
-+
- &pwrap {
- pmic: mt6323 {
- compatible = "mediatek,mt6323";
-@@ -267,38 +283,36 @@
- };
- };
-
--&uart2 {
-- status = "okay";
--};
-+&pio {
-+ nand_pins_default: nanddefault {
-+ pins_dat {
-+ pinmux = <MT7623_PIN_111_MSDC0_DAT7_FUNC_NLD7>,
-+ <MT7623_PIN_112_MSDC0_DAT6_FUNC_NLD6>,
-+ <MT7623_PIN_114_MSDC0_DAT4_FUNC_NLD4>,
-+ <MT7623_PIN_118_MSDC0_DAT3_FUNC_NLD3>,
-+ <MT7623_PIN_121_MSDC0_DAT0_FUNC_NLD0>,
-+ <MT7623_PIN_120_MSDC0_DAT1_FUNC_NLD1>,
-+ <MT7623_PIN_113_MSDC0_DAT5_FUNC_NLD5>,
-+ <MT7623_PIN_115_MSDC0_RSTB_FUNC_NLD8>,
-+ <MT7623_PIN_119_MSDC0_DAT2_FUNC_NLD2>;
-+ input-enable;
-+ drive-strength = <MTK_DRIVE_8mA>;
-+ bias-pull-up;
-+ };
-
--&mmc0 {
-- status = "okay";
-- pinctrl-names = "default", "state_uhs";
-- pinctrl-0 = <&mmc0_pins_default>;
-- pinctrl-1 = <&mmc0_pins_uhs>;
-- bus-width = <8>;
-- max-frequency = <50000000>;
-- cap-mmc-highspeed;
-- vmmc-supply = <&mt6323_vemc3v3_reg>;
-- vqmmc-supply = <&mt6323_vio18_reg>;
-- non-removable;
--};
-+ pins_we {
-+ pinmux = <MT7623_PIN_117_MSDC0_CLK_FUNC_NWEB>;
-+ drive-strength = <MTK_DRIVE_8mA>;
-+ bias-pull-up = <MTK_PUPD_SET_R1R0_10>;
-+ };
-
--&mmc1 {
-- status = "okay";
-- pinctrl-names = "default", "state_uhs";
-- pinctrl-0 = <&mmc1_pins_default>;
-- pinctrl-1 = <&mmc1_pins_uhs>;
-- bus-width = <4>;
-- max-frequency = <50000000>;
-- cap-sd-highspeed;
-- sd-uhs-sdr25;
--// cd-gpios = <&pio 132 0>;
-- vmmc-supply = <&mt6323_vmch_reg>;
-- vqmmc-supply = <&mt6323_vmc_reg>;
--};
-+ pins_ale {
-+ pinmux = <MT7623_PIN_116_MSDC0_CMD_FUNC_NALE>;
-+ drive-strength = <MTK_DRIVE_8mA>;
-+ bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
-+ };
-+ };
-
--&pio {
- mmc0_pins_default: mmc0default {
- pins_cmd_dat {
- pinmux = <MT7623_PIN_111_MSDC0_DAT7_FUNC_MSDC0_DAT7>,
-@@ -370,11 +384,6 @@
- bias-pull-down;
- drive-strength = <MTK_DRIVE_4mA>;
- };
--
--// pins_insert {
--// pinmux = <MT8173_PIN_132_I2S0_DATA1_FUNC_GPIO132>;
--// bias-pull-up;
--// };
- };
-
- mmc1_pins_uhs: mmc1 {
-@@ -422,6 +431,36 @@
- };
- };
-
-+&uart2 {
-+ status = "okay";
-+};
-+
-+&mmc0 {
-+ status = "okay";
-+ pinctrl-names = "default", "state_uhs";
-+ pinctrl-0 = <&mmc0_pins_default>;
-+ pinctrl-1 = <&mmc0_pins_uhs>;
-+ bus-width = <8>;
-+ max-frequency = <50000000>;
-+ cap-mmc-highspeed;
-+ vmmc-supply = <&mt6323_vemc3v3_reg>;
-+ vqmmc-supply = <&mt6323_vio18_reg>;
-+ non-removable;
-+};
-+
-+&mmc1 {
-+ status = "okay";
-+ pinctrl-names = "default", "state_uhs";
-+ pinctrl-0 = <&mmc1_pins_default>;
-+ pinctrl-1 = <&mmc1_pins_uhs>;
-+ bus-width = <4>;
-+ max-frequency = <50000000>;
-+ cap-sd-highspeed;
-+ sd-uhs-sdr25;
-+ vmmc-supply = <&mt6323_vmch_reg>;
-+ vqmmc-supply = <&mt6323_vmc_reg>;
-+};
-+
- &usb1 {
- vusb33-supply = <&mt6323_vusb_reg>;
- vbus-supply = <&usb_p1_vbus>;
-@@ -456,3 +495,56 @@
- mediatek,reset-pin = <&pio 15 0>;
- status = "okay";
- };
-+
-+&nand {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <1>;
-+
-+ pinctrl-names = "default";
-+ pinctrl-0 = <&nand_pins_default>;
-+
-+ partition@0 {
-+ label = "preloader";
-+ reg = <0x0 0x40000>;
-+ read-only;
-+ };
-+
-+ partition@1 {
-+ label = "u-boot";
-+ reg = <0x40000 0x80000>;
-+ read-only;
-+ };
-+
-+ partition@2 {
-+ label = "u-boot-env";
-+ reg = <0xc0000 0x40000>;
-+ read-only;
-+ };
-+
-+ partition@3 {
-+ label = "factory";
-+ reg = <0x100000 0x40000>;
-+ read-only;
-+ };
-+
-+ partition@4 {
-+ label = "kernel";
-+ reg = <0x140000 0x2000000>;
-+ };
-+
-+ partition@4 {
-+ label = "kernel2";
-+ reg = <0x2140000 0x2000000>;
-+ };
-+
-+ partition@5 {
-+ label = "rootfs";
-+ reg = <0x4140000 0x1000000>;
-+ };
-+
-+ partition@6 {
-+ label = "usrdata";
-+ reg = <0x5140000 0x9f80000>;
-+ };
-+};
-diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
-index f405ec7..76d603a 100644
---- a/arch/arm/boot/dts/mt7623.dtsi
-+++ b/arch/arm/boot/dts/mt7623.dtsi
-@@ -31,25 +31,65 @@
- #size-cells = <0>;
- enable-method = "mediatek,mt6589-smp";
-
-- cpu@0 {
-+ cpu0: cpu@0 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x0>;
-+ clocks = <&infracfg CLK_INFRA_CPUSEL>,
-+ <&apmixedsys CLK_APMIXED_MAINPLL>;
-+ clock-names = "cpu", "intermediate";
-+ operating-points = <
-+ 598000 1150000
-+ 747500 1150000
-+ 1040000 1150000
-+ 1196000 1200000
-+ 1300000 1300000
-+ >;
- };
-- cpu@1 {
-+ cpu1: cpu@1 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x1>;
-+ clocks = <&infracfg CLK_INFRA_CPUSEL>,
-+ <&apmixedsys CLK_APMIXED_MAINPLL>;
-+ clock-names = "cpu", "intermediate";
-+ operating-points = <
-+ 598000 1150000
-+ 747500 1150000
-+ 1040000 1150000
-+ 1196000 1200000
-+ 1300000 1300000
-+ >;
- };
-- cpu@2 {
-+ cpu2: cpu@2 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x2>;
-+ clocks = <&infracfg CLK_INFRA_CPUSEL>,
-+ <&apmixedsys CLK_APMIXED_MAINPLL>;
-+ clock-names = "cpu", "intermediate";
-+ operating-points = <
-+ 598000 1150000
-+ 747500 1150000
-+ 1040000 1150000
-+ 1196000 1200000
-+ 1300000 1300000
-+ >;
- };
-- cpu@3 {
-+ cpu3: cpu@3 {
- device_type = "cpu";
- compatible = "arm,cortex-a7";
- reg = <0x3>;
-+ clocks = <&infracfg CLK_INFRA_CPUSEL>,
-+ <&apmixedsys CLK_APMIXED_MAINPLL>;
-+ clock-names = "cpu", "intermediate";
-+ operating-points = <
-+ 598000 1150000
-+ 747500 1150000
-+ 1040000 1150000
-+ 1196000 1200000
-+ 1300000 1300000
-+ >;
- };
- };
-
-@@ -300,7 +340,7 @@
- clocks = <&pericfg CLK_PERI_NFI>, <&pericfg CLK_PERI_NFI_ECC>,
- <&pericfg CLK_PERI_NFI_PAD>;
- clock-names = "nfi_clk", "nfiecc_clk", "pad_clk";
-- nand-on-flash-bbt;
-+ // nand-on-flash-bbt;
- status = "disabled";
- };
-
-diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
-index b1f8a73..baf945e 100644
---- a/drivers/cpufreq/Kconfig.arm
-+++ b/drivers/cpufreq/Kconfig.arm
-@@ -81,6 +81,15 @@ config ARM_KIRKWOOD_CPUFREQ
- This adds the CPUFreq driver for Marvell Kirkwood
- SoCs.
-
-+config ARM_MT7623_CPUFREQ
-+ bool "Mediatek MT7623 CPUFreq support"
-+ depends on ARCH_MEDIATEK && REGULATOR
-+ depends on ARM || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
-+ depends on !CPU_THERMAL || THERMAL=y
-+ select PM_OPP
-+ help
-+ This adds the CPUFreq driver support for Mediatek MT7623 SoC.
-+
- config ARM_MT8173_CPUFREQ
- bool "Mediatek MT8173 CPUFreq support"
- depends on ARCH_MEDIATEK && REGULATOR
-diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
-index c0af1a1..e198752 100644
---- a/drivers/cpufreq/Makefile
-+++ b/drivers/cpufreq/Makefile
-@@ -57,6 +57,7 @@ obj-$(CONFIG_ARM_HISI_ACPU_CPUFREQ) += hisi-acpu-cpufreq.o
- obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o
- obj-$(CONFIG_ARM_INTEGRATOR) += integrator-cpufreq.o
- obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o
-+obj-$(CONFIG_ARM_MT7623_CPUFREQ) += mt7623-cpufreq.o
- obj-$(CONFIG_ARM_MT8173_CPUFREQ) += mt8173-cpufreq.o
- obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o
- obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o
-diff --git a/drivers/cpufreq/mt7623-cpufreq.c b/drivers/cpufreq/mt7623-cpufreq.c
-new file mode 100644
-index 0000000..8d154ce
---- /dev/null
-+++ b/drivers/cpufreq/mt7623-cpufreq.c
-@@ -0,0 +1,389 @@
-+/*
-+ * Copyright (c) 2015 Linaro Ltd.
-+ * Author: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#include <linux/clk.h>
-+#include <linux/cpu.h>
-+#include <linux/cpu_cooling.h>
-+#include <linux/cpufreq.h>
-+#include <linux/cpumask.h>
-+#include <linux/of.h>
-+#include <linux/platform_device.h>
-+#include <linux/pm_opp.h>
-+#include <linux/regulator/consumer.h>
-+#include <linux/slab.h>
-+#include <linux/thermal.h>
-+
-+#define VOLT_TOL (10000)
-+
-+/*
-+ * When scaling the clock frequency of a CPU clock domain, the clock source
-+ * needs to be switched to another stable PLL clock temporarily until
-+ * the original PLL becomes stable at target frequency.
-+ */
-+struct mtk_cpu_dvfs_info {
-+ struct device *cpu_dev;
-+ struct regulator *proc_reg;
-+ struct clk *cpu_clk;
-+ struct clk *inter_clk;
-+ struct thermal_cooling_device *cdev;
-+ int intermediate_voltage;
-+};
-+
-+static int mtk_cpufreq_set_voltage(struct mtk_cpu_dvfs_info *info, int vproc)
-+{
-+ return regulator_set_voltage(info->proc_reg, vproc,
-+ vproc + VOLT_TOL);
-+}
-+
-+static int mtk_cpufreq_set_target(struct cpufreq_policy *policy,
-+ unsigned int index)
-+{
-+ struct cpufreq_frequency_table *freq_table = policy->freq_table;
-+ struct clk *cpu_clk = policy->clk;
-+ struct clk *armpll = clk_get_parent(cpu_clk);
-+ struct mtk_cpu_dvfs_info *info = policy->driver_data;
-+ struct device *cpu_dev = info->cpu_dev;
-+ struct dev_pm_opp *opp;
-+ long freq_hz, old_freq_hz;
-+ int vproc, old_vproc, inter_vproc, target_vproc, ret;
-+
-+ inter_vproc = info->intermediate_voltage;
-+
-+ old_freq_hz = clk_get_rate(cpu_clk);
-+ old_vproc = regulator_get_voltage(info->proc_reg);
-+
-+ freq_hz = freq_table[index].frequency * 1000;
-+
-+ rcu_read_lock();
-+ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_hz);
-+ if (IS_ERR(opp)) {
-+ rcu_read_unlock();
-+ pr_err("cpu%d: failed to find OPP for %ld\n",
-+ policy->cpu, freq_hz);
-+ return PTR_ERR(opp);
-+ }
-+ vproc = dev_pm_opp_get_voltage(opp);
-+ rcu_read_unlock();
-+
-+ /*
-+ * If the new voltage or the intermediate voltage is higher than the
-+ * current voltage, scale up voltage first.
-+ */
-+ target_vproc = (inter_vproc > vproc) ? inter_vproc : vproc;
-+ if (old_vproc < target_vproc) {
-+ ret = mtk_cpufreq_set_voltage(info, target_vproc);
-+ if (ret) {
-+ pr_err("cpu%d: failed to scale up voltage!\n",
-+ policy->cpu);
-+ mtk_cpufreq_set_voltage(info, old_vproc);
-+ return ret;
-+ }
-+ }
-+
-+ /* Reparent the CPU clock to intermediate clock. */
-+ ret = clk_set_parent(cpu_clk, info->inter_clk);
-+ if (ret) {
-+ pr_err("cpu%d: failed to re-parent cpu clock!\n",
-+ policy->cpu);
-+ mtk_cpufreq_set_voltage(info, old_vproc);
-+ WARN_ON(1);
-+ return ret;
-+ }
-+
-+ /* Set the original PLL to target rate. */
-+ ret = clk_set_rate(armpll, freq_hz);
-+ if (ret) {
-+ pr_err("cpu%d: failed to scale cpu clock rate!\n",
-+ policy->cpu);
-+ clk_set_parent(cpu_clk, armpll);
-+ mtk_cpufreq_set_voltage(info, old_vproc);
-+ return ret;
-+ }
-+
-+ /* Set parent of CPU clock back to the original PLL. */
-+ ret = clk_set_parent(cpu_clk, armpll);
-+ if (ret) {
-+ pr_err("cpu%d: failed to re-parent cpu clock!\n",
-+ policy->cpu);
-+ mtk_cpufreq_set_voltage(info, inter_vproc);
-+ WARN_ON(1);
-+ return ret;
-+ }
-+
-+ /*
-+ * If the new voltage is lower than the intermediate voltage or the
-+ * original voltage, scale down to the new voltage.
-+ */
-+ if (vproc < inter_vproc || vproc < old_vproc) {
-+ ret = mtk_cpufreq_set_voltage(info, vproc);
-+ if (ret) {
-+ pr_err("cpu%d: failed to scale down voltage!\n",
-+ policy->cpu);
-+ clk_set_parent(cpu_clk, info->inter_clk);
-+ clk_set_rate(armpll, old_freq_hz);
-+ clk_set_parent(cpu_clk, armpll);
-+ return ret;
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
-+{
-+ struct mtk_cpu_dvfs_info *info = policy->driver_data;
-+ struct device_node *np = of_node_get(info->cpu_dev->of_node);
-+
-+ if (WARN_ON(!np))
-+ return;
-+
-+ if (of_find_property(np, "#cooling-cells", NULL)) {
-+ info->cdev = of_cpufreq_cooling_register(np,
-+ policy->related_cpus);
-+
-+ if (IS_ERR(info->cdev)) {
-+ dev_err(info->cpu_dev,
-+ "running cpufreq without cooling device: %ld\n",
-+ PTR_ERR(info->cdev));
-+
-+ info->cdev = NULL;
-+ }
-+ }
-+
-+ of_node_put(np);
-+}
-+
-+static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
-+{
-+ struct device *cpu_dev;
-+ struct regulator *proc_reg = ERR_PTR(-ENODEV);
-+ struct clk *cpu_clk = ERR_PTR(-ENODEV);
-+ struct clk *inter_clk = ERR_PTR(-ENODEV);
-+ struct dev_pm_opp *opp;
-+ unsigned long rate;
-+ int ret;
-+
-+ cpu_dev = get_cpu_device(cpu);
-+ if (!cpu_dev) {
-+ pr_err("failed to get cpu%d device\n", cpu);
-+ return -ENODEV;
-+ }
-+
-+ cpu_clk = clk_get(cpu_dev, "cpu");
-+ if (IS_ERR(cpu_clk)) {
-+ if (PTR_ERR(cpu_clk) == -EPROBE_DEFER)
-+ pr_warn("cpu clk for cpu%d not ready, retry.\n", cpu);
-+ else
-+ pr_err("failed to get cpu clk for cpu%d\n", cpu);
-+
-+ ret = PTR_ERR(cpu_clk);
-+ return ret;
-+ }
-+
-+ inter_clk = clk_get(cpu_dev, "intermediate");
-+ if (IS_ERR(inter_clk)) {
-+ if (PTR_ERR(inter_clk) == -EPROBE_DEFER)
-+ pr_warn("intermediate clk for cpu%d not ready, retry.\n",
-+ cpu);
-+ else
-+ pr_err("failed to get intermediate clk for cpu%d\n",
-+ cpu);
-+
-+ ret = PTR_ERR(inter_clk);
-+ goto out_free_resources;
-+ }
-+
-+ proc_reg = regulator_get_exclusive(cpu_dev, "proc");
-+ if (IS_ERR(proc_reg)) {
-+ if (PTR_ERR(proc_reg) == -EPROBE_DEFER)
-+ pr_warn("proc regulator for cpu%d not ready, retry.\n",
-+ cpu);
-+ else
-+ pr_err("failed to get proc regulator for cpu%d\n",
-+ cpu);
-+
-+ ret = PTR_ERR(proc_reg);
-+ goto out_free_resources;
-+ }
-+
-+ ret = dev_pm_opp_of_add_table(cpu_dev);
-+ if (ret) {
-+ pr_warn("no OPP table for cpu%d\n", cpu);
-+ goto out_free_resources;
-+ }
-+
-+ /* Search a safe voltage for intermediate frequency. */
-+ rate = clk_get_rate(inter_clk);
-+ rcu_read_lock();
-+ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &rate);
-+ if (IS_ERR(opp)) {
-+ rcu_read_unlock();
-+ pr_err("failed to get intermediate opp for cpu%d\n", cpu);
-+ ret = PTR_ERR(opp);
-+ goto out_free_opp_table;
-+ }
-+ info->intermediate_voltage = dev_pm_opp_get_voltage(opp);
-+ rcu_read_unlock();
-+
-+ info->cpu_dev = cpu_dev;
-+ info->proc_reg = proc_reg;
-+ info->cpu_clk = cpu_clk;
-+ info->inter_clk = inter_clk;
-+
-+ return 0;
-+
-+out_free_opp_table:
-+ dev_pm_opp_of_remove_table(cpu_dev);
-+
-+out_free_resources:
-+ if (!IS_ERR(proc_reg))
-+ regulator_put(proc_reg);
-+ if (!IS_ERR(cpu_clk))
-+ clk_put(cpu_clk);
-+ if (!IS_ERR(inter_clk))
-+ clk_put(inter_clk);
-+
-+ return ret;
-+}
-+
-+static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info)
-+{
-+ if (!IS_ERR(info->proc_reg))
-+ regulator_put(info->proc_reg);
-+ if (!IS_ERR(info->cpu_clk))
-+ clk_put(info->cpu_clk);
-+ if (!IS_ERR(info->inter_clk))
-+ clk_put(info->inter_clk);
-+
-+ dev_pm_opp_of_remove_table(info->cpu_dev);
-+}
-+
-+static int mtk_cpufreq_init(struct cpufreq_policy *policy)
-+{
-+ struct mtk_cpu_dvfs_info *info;
-+ struct cpufreq_frequency_table *freq_table;
-+ int ret;
-+
-+ info = kzalloc(sizeof(*info), GFP_KERNEL);
-+ if (!info)
-+ return -ENOMEM;
-+
-+ ret = mtk_cpu_dvfs_info_init(info, policy->cpu);
-+ if (ret) {
-+ pr_err("%s failed to initialize dvfs info for cpu%d\n",
-+ __func__, policy->cpu);
-+ goto out_free_dvfs_info;
-+ }
-+
-+ ret = dev_pm_opp_init_cpufreq_table(info->cpu_dev, &freq_table);
-+ if (ret) {
-+ pr_err("failed to init cpufreq table for cpu%d: %d\n",
-+ policy->cpu, ret);
-+ goto out_release_dvfs_info;
-+ }
-+
-+ ret = cpufreq_table_validate_and_show(policy, freq_table);
-+ if (ret) {
-+ pr_err("%s: invalid frequency table: %d\n", __func__, ret);
-+ goto out_free_cpufreq_table;
-+ }
-+
-+ /* CPUs in the same cluster share a clock and power domain. */
-+ cpumask_setall(policy->cpus);
-+ policy->driver_data = info;
-+ policy->clk = info->cpu_clk;
-+
-+ return 0;
-+
-+out_free_cpufreq_table:
-+ dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
-+
-+out_release_dvfs_info:
-+ mtk_cpu_dvfs_info_release(info);
-+
-+out_free_dvfs_info:
-+ kfree(info);
-+
-+ return ret;
-+}
-+
-+static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
-+{
-+ struct mtk_cpu_dvfs_info *info = policy->driver_data;
-+
-+ cpufreq_cooling_unregister(info->cdev);
-+ dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
-+ mtk_cpu_dvfs_info_release(info);
-+ kfree(info);
-+
-+ return 0;
-+}
-+
-+static struct cpufreq_driver mt7623_cpufreq_driver = {
-+ .flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
-+ .verify = cpufreq_generic_frequency_table_verify,
-+ .target_index = mtk_cpufreq_set_target,
-+ .get = cpufreq_generic_get,
-+ .init = mtk_cpufreq_init,
-+ .exit = mtk_cpufreq_exit,
-+ .ready = mtk_cpufreq_ready,
-+ .name = "mtk-cpufreq",
-+ .attr = cpufreq_generic_attr,
-+};
-+
-+static int mt7623_cpufreq_probe(struct platform_device *pdev)
-+{
-+ int ret;
-+
-+ ret = cpufreq_register_driver(&mt7623_cpufreq_driver);
-+ if (ret)
-+ pr_err("failed to register mtk cpufreq driver\n");
-+
-+ return ret;
-+}
-+
-+static struct platform_driver mt7623_cpufreq_platdrv = {
-+ .driver = {
-+ .name = "mt7623-cpufreq",
-+ },
-+ .probe = mt7623_cpufreq_probe,
-+};
-+
-+static int mt7623_cpufreq_driver_init(void)
-+{
-+ struct platform_device *pdev;
-+ int err;
-+
-+ if (!of_machine_is_compatible("mediatek,mt7623"))
-+ return -ENODEV;
-+
-+ err = platform_driver_register(&mt7623_cpufreq_platdrv);
-+ if (err)
-+ return err;
-+
-+ /*
-+ * Since there's no place to hold device registration code and no
-+ * device tree based way to match cpufreq driver yet, both the driver
-+ * and the device registration codes are put here to handle defer
-+ * probing.
-+ */
-+ pdev = platform_device_register_simple("mt7623-cpufreq", -1, NULL, 0);
-+ if (IS_ERR(pdev)) {
-+ pr_err("failed to register mtk-cpufreq platform device\n");
-+ return PTR_ERR(pdev);
-+ }
-+
-+ return 0;
-+}
-+device_initcall(mt7623_cpufreq_driver_init);
---
-1.7.10.4
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 07:29:14 +0000