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authorJames <>2015-11-04 11:49:21 +0000
committerJames <>2015-11-04 11:49:21 +0000
commit716ca530e1c4515d8683c9d5be3d56b301758b66 (patch)
tree700eb5bcc1a462a5f21dcec15ce7c97ecfefa772 /target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch
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Diffstat (limited to 'target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch')
-rw-r--r--target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch785
1 files changed, 785 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch b/target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch
new file mode 100644
index 0000000..827d721
--- /dev/null
+++ b/target/linux/mediatek/patches/0023-thermal-Add-Mediatek-thermal-controller-support.patch
@@ -0,0 +1,785 @@
+From 014330a304100782a26bc7df02778c8c386b2857 Mon Sep 17 00:00:00 2001
+From: Sascha Hauer <s.hauer@pengutronix.de>
+Date: Wed, 13 May 2015 10:52:42 +0200
+Subject: [PATCH 23/76] thermal: Add Mediatek thermal controller support
+
+This adds support for the Mediatek thermal controller found on MT8173
+and likely other SoCs.
+The controller is a bit special. It does not have its own ADC, instead
+it controls the on-SoC AUXADC via AHB bus accesses. For this reason
+we need the physical address of the AUXADC. Also it controls a mux
+using AHB bus accesses, so we need the APMIXEDSYS physical address aswell.
+
+Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
+---
+ drivers/thermal/Kconfig | 8 +
+ drivers/thermal/Makefile | 1 +
+ drivers/thermal/mtk_thermal.c | 728 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 737 insertions(+)
+ create mode 100644 drivers/thermal/mtk_thermal.c
+
+diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
+index af40db0..3aa5500 100644
+--- a/drivers/thermal/Kconfig
++++ b/drivers/thermal/Kconfig
+@@ -285,6 +285,14 @@ config ACPI_THERMAL_REL
+ tristate
+ depends on ACPI
+
++config MTK_THERMAL
++ tristate "Temperature sensor driver for mediatek SoCs"
++ depends on ARCH_MEDIATEK || COMPILE_TEST
++ default y
++ help
++ Enable this option if you want to have support for thermal management
++ controller present in Mediatek SoCs
++
+ menu "Texas Instruments thermal drivers"
+ source "drivers/thermal/ti-soc-thermal/Kconfig"
+ endmenu
+diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
+index fa0dc48..51cfab7 100644
+--- a/drivers/thermal/Makefile
++++ b/drivers/thermal/Makefile
+@@ -39,3 +39,4 @@ obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal/
+ obj-$(CONFIG_INT340X_THERMAL) += int340x_thermal/
+ obj-$(CONFIG_ST_THERMAL) += st/
+ obj-$(CONFIG_TEGRA_SOCTHERM) += tegra_soctherm.o
++obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o
+diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
+new file mode 100644
+index 0000000..27aab12
+--- /dev/null
++++ b/drivers/thermal/mtk_thermal.c
+@@ -0,0 +1,728 @@
++/*
++ * Copyright (c) 2014 MediaTek Inc.
++ * Author: Hanyi.Wu <hanyi.wu@mediatek.com>
++ *
++ * 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/kernel.h>
++#include <linux/module.h>
++#include <linux/dmi.h>
++#include <linux/thermal.h>
++#include <linux/platform_device.h>
++#include <linux/types.h>
++#include <linux/delay.h>
++#include <linux/slab.h>
++#include <linux/clk.h>
++#include <linux/time.h>
++#include <linux/of.h>
++#include <linux/of_irq.h>
++#include <linux/of_address.h>
++#include <linux/interrupt.h>
++#include <linux/reset.h>
++
++/* AUXADC Registers */
++#define AUXADC_CON0_V 0x000
++#define AUXADC_CON1_V 0x004
++#define AUXADC_CON1_SET_V 0x008
++#define AUXADC_CON1_CLR_V 0x00c
++#define AUXADC_CON2_V 0x010
++#define AUXADC_DATA(channel) (0x14 + (channel) * 4)
++#define AUXADC_MISC_V 0x094
++
++#define AUXADC_CON1_CHANNEL(x) (1 << (x))
++
++/* Thermal Controller Registers */
++#define TEMPMONCTL0 0x000
++#define TEMPMONCTL1 0x004
++#define TEMPMONCTL2 0x008
++#define TEMPMONINT 0x00c
++#define TEMPMONINTSTS 0x010
++#define TEMPMONIDET0 0x014
++#define TEMPMONIDET1 0x018
++#define TEMPMONIDET2 0x01c
++#define TEMPH2NTHRE 0x024
++#define TEMPHTHRE 0x028
++#define TEMPCTHRE 0x02c
++#define TEMPOFFSETH 0x030
++#define TEMPOFFSETL 0x034
++#define TEMPMSRCTL0 0x038
++#define TEMPMSRCTL1 0x03c
++#define TEMPAHBPOLL 0x040
++#define TEMPAHBTO 0x044
++#define TEMPADCPNP0 0x048
++#define TEMPADCPNP1 0x04c
++#define TEMPADCPNP2 0x050
++#define TEMPADCPNP3 0x0b4
++
++#define TEMPADCMUX 0x054
++#define TEMPADCEXT 0x058
++#define TEMPADCEXT1 0x05c
++#define TEMPADCEN 0x060
++#define TEMPPNPMUXADDR 0x064
++#define TEMPADCMUXADDR 0x068
++#define TEMPADCEXTADDR 0x06c
++#define TEMPADCEXT1ADDR 0x070
++#define TEMPADCENADDR 0x074
++#define TEMPADCVALIDADDR 0x078
++#define TEMPADCVOLTADDR 0x07c
++#define TEMPRDCTRL 0x080
++#define TEMPADCVALIDMASK 0x084
++#define TEMPADCVOLTAGESHIFT 0x088
++#define TEMPADCWRITECTRL 0x08c
++#define TEMPMSR0 0x090
++#define TEMPMSR1 0x094
++#define TEMPMSR2 0x098
++#define TEMPMSR3 0x0B8
++
++#define TEMPIMMD0 0x0a0
++#define TEMPIMMD1 0x0a4
++#define TEMPIMMD2 0x0a8
++
++#define TEMPPROTCTL 0x0c0
++#define TEMPPROTTA 0x0c4
++#define TEMPPROTTB 0x0c8
++#define TEMPPROTTC 0x0cc
++
++#define TEMPSPARE0 0x0f0
++#define TEMPSPARE1 0x0f4
++#define TEMPSPARE2 0x0f8
++#define TEMPSPARE3 0x0fc
++
++#define PTPCORESEL 0x400
++#define THERMINTST 0x404
++#define PTPODINTST 0x408
++#define THSTAGE0ST 0x40c
++#define THSTAGE1ST 0x410
++#define THSTAGE2ST 0x414
++#define THAHBST0 0x418
++#define THAHBST1 0x41c /* Only for DE debug */
++#define PTPSPARE0 0x420
++#define PTPSPARE1 0x424
++#define PTPSPARE2 0x428
++#define PTPSPARE3 0x42c
++#define THSLPEVEB 0x430
++
++#define TEMPMONINT_COLD(sp) ((1 << 0) << ((sp) * 5))
++#define TEMPMONINT_HOT(sp) ((1 << 1) << ((sp) * 5))
++#define TEMPMONINT_LOW_OFS(sp) ((1 << 2) << ((sp) * 5))
++#define TEMPMONINT_HIGH_OFS(sp) ((1 << 3) << ((sp) * 5))
++#define TEMPMONINT_HOT_TO_NORM(sp) ((1 << 4) << ((sp) * 5))
++#define TEMPMONINT_TIMEOUT (1 << 15)
++#define TEMPMONINT_IMMEDIATE_SENSE(sp) (1 << (16 + (sp)))
++#define TEMPMONINT_FILTER_SENSE(sp) (1 << (19 + (sp)))
++
++#define TEMPADCWRITECTRL_ADC_PNP_WRITE (1 << 0)
++#define TEMPADCWRITECTRL_ADC_MUX_WRITE (1 << 1)
++#define TEMPADCWRITECTRL_ADC_EXTRA_WRITE (1 << 2)
++#define TEMPADCWRITECTRL_ADC_EXTRA1_WRITE (1 << 3)
++
++#define TEMPADCVALIDMASK_VALID_HIGH (1 << 5)
++#define TEMPADCVALIDMASK_VALID_POS(bit) (bit)
++
++#define TEMPPROTCTL_AVERAGE (0 << 16)
++#define TEMPPROTCTL_MAXIMUM (1 << 16)
++#define TEMPPROTCTL_SELECTED (2 << 16)
++
++#define MT8173_THERMAL_ZONE_CA57 0
++#define MT8173_THERMAL_ZONE_CA53 1
++#define MT8173_THERMAL_ZONE_GPU 2
++#define MT8173_THERMAL_ZONE_CORE 3
++
++#define MT8173_TS1 0
++#define MT8173_TS2 1
++#define MT8173_TS3 2
++#define MT8173_TS4 3
++#define MT8173_TSABB 4
++
++/* AUXADC channel 11 is used for the temperature sensors */
++#define MT8173_TEMP_AUXADC_CHANNEL 11
++
++/* The total number of temperature sensors in the MT8173 */
++#define MT8173_NUM_SENSORS 5
++
++/* The number of banks in the MT8173 */
++#define MT8173_NUM_BANKS 4
++
++/* The number of sensing points per bank */
++#define MT8173_NUM_SENSING_POINTS 4
++
++#define THERMAL_NAME "mtk-thermal"
++
++struct mtk_thermal;
++
++struct mtk_thermal_bank {
++ struct mtk_thermal *mt;
++ struct thermal_zone_device *tz;
++ int id;
++};
++
++struct mtk_thermal {
++ struct device *dev;
++ void __iomem *thermal_base;
++ void __iomem *auxadc_base;
++
++ u64 auxadc_phys_base;
++ u64 apmixed_phys_base;
++ struct reset_control *reset;
++ struct clk *clk_peri_therm;
++ struct clk *clk_auxadc;
++
++ struct mtk_thermal_bank banks[MT8173_NUM_BANKS];
++
++ struct mutex lock;
++
++ /* Calibration values */
++ s32 adc_ge;
++ s32 adc_oe;
++ s32 degc_cali;
++ s32 o_slope;
++ s32 vts;
++};
++
++struct mtk_thermal_bank_cfg {
++ unsigned int enable_mask;
++ unsigned int sensors[4];
++};
++
++static int sensor_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
++
++/*
++ * The MT8173 thermal controller has four banks. Each bank can read up to
++ * four temperature sensors simultaneously. The MT8173 has a total of 5
++ * temperature sensors. We use each bank to measure a certain area of the
++ * SoC. Since TS2 is located centrally in the SoC it is influenced by multiple
++ * areas, hence is used in different banks.
++ */
++static struct mtk_thermal_bank_cfg bank_data[] = {
++ {
++ .enable_mask = 3,
++ .sensors = { MT8173_TS2, MT8173_TS3 },
++ }, {
++ .enable_mask = 3,
++ .sensors = { MT8173_TS2, MT8173_TS4 },
++ }, {
++ .enable_mask = 7,
++ .sensors = { MT8173_TS1, MT8173_TS2, MT8173_TSABB },
++ }, {
++ .enable_mask = 1,
++ .sensors = { MT8173_TS2 },
++ },
++};
++
++static int tempmsr_ofs[MT8173_NUM_SENSING_POINTS] = {
++ TEMPMSR0, TEMPMSR1, TEMPMSR2, TEMPMSR3
++};
++
++static int tempadcpnp_ofs[MT8173_NUM_SENSING_POINTS] = {
++ TEMPADCPNP0, TEMPADCPNP1, TEMPADCPNP2, TEMPADCPNP3
++};
++
++/**
++ * raw_to_mcelsius - convert a raw ADC value to mcelsius
++ * @mt: The thermal controller
++ * @raw: raw ADC value
++ *
++ * This converts the raw ADC value to mcelsius using the SoC specific
++ * calibration constants
++ */
++static int raw_to_mcelsius(struct mtk_thermal *mt, u32 raw)
++{
++ s32 format_1, format_2, format_3, format_4;
++ s32 xtoomt;
++ s32 gain;
++
++ raw &= 0xfff;
++
++ gain = (10000 + mt->adc_ge);
++
++ xtoomt = ((((mt->vts + 3350 - mt->adc_oe) * 10000) / 4096) * 10000) /
++ gain;
++
++ format_1 = ((mt->degc_cali * 10) >> 1);
++ format_2 = (raw - mt->adc_oe);
++ format_3 = (((((format_2) * 10000) >> 12) * 10000) / gain) - xtoomt;
++ format_3 = format_3 * 15 / 18;
++ format_4 = ((format_3 * 100) / (165 + mt->o_slope));
++ format_4 = format_4 - (format_4 << 1);
++
++ return (format_1 + format_4) * 100;
++}
++
++/**
++ * mcelsius_to_raw - convert mcelsius to raw ADC value
++ * @mt: The thermal controller
++ * @temp: The temperature in mcelsius
++ *
++ * This converts a temperature in mcelsius to a raw ADC value, needed to
++ * calculate the trigger values for interrupt generation.
++ */
++static u32 mcelsius_to_raw(struct mtk_thermal *mt, int temp)
++{
++ s32 format_1, format_2, format_3, format_4;
++ s32 xtoomt;
++ s32 gain;
++
++ gain = (10000 + mt->adc_ge);
++
++ xtoomt = ((((mt->vts + 3350 - mt->adc_oe) * 10000) / 4096) * 10000) /
++ gain;
++
++ format_1 = temp - (mt->degc_cali * 1000 / 2);
++ format_2 = format_1 * (165 + mt->o_slope) * 18 / 15;
++ format_2 = format_2 - 2 * format_2;
++ format_3 = format_2 / 1000 + xtoomt * 10;
++ format_4 = (format_3 * 4096 / 10000 * gain) / 100000 + mt->adc_oe;
++
++ return format_4;
++}
++
++/**
++ * mtk_thermal_get_bank - get bank
++ * @bank: The bank
++ *
++ * The bank registers are banked, we have to select a bank in the
++ * PTPCORESEL register to access it.
++ */
++static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)
++{
++ struct mtk_thermal *mt = bank->mt;
++ u32 val;
++
++ mutex_lock(&mt->lock);
++
++ val = readl(mt->thermal_base + PTPCORESEL);
++ val &= ~0xf;
++ val |= bank->id;
++ writel(val, mt->thermal_base + PTPCORESEL);
++}
++
++/**
++ * mtk_thermal_put_bank - release bank
++ * @bank: The bank
++ *
++ * release a bank previously taken with mtk_thermal_get_bank,
++ */
++static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
++{
++ struct mtk_thermal *mt = bank->mt;
++
++ mutex_unlock(&mt->lock);
++}
++
++/**
++ * mtk_thermal_bank_temperature - get the temperature of a bank
++ * @bank: The bank
++ *
++ * The temperature of a bank is considered the maximum temperature of
++ * the sensors associated to the bank.
++ */
++static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
++{
++ struct mtk_thermal *mt = bank->mt;
++ int temp, i, max;
++ u32 raw;
++
++ temp = max = -INT_MAX;
++
++ for (i = 0; i < 4; i++) {
++ int sensno;
++
++ if (!(bank_data[bank->id].enable_mask & (1 << i)))
++ continue;
++
++ raw = readl(mt->thermal_base + tempmsr_ofs[i]);
++
++ sensno = bank_data[bank->id].sensors[i];
++ temp = raw_to_mcelsius(mt, raw);
++
++ if (temp > max)
++ max = temp;
++ }
++
++ return max;
++}
++
++static void mtk_thermal_irq_bank(struct mtk_thermal_bank *bank)
++{
++ struct mtk_thermal *mt = bank->mt;
++ int sp;
++ u32 irqstat;
++ bool update = false;
++
++ mtk_thermal_get_bank(bank);
++
++ irqstat = readl(mt->thermal_base + TEMPMONINTSTS);
++
++ mtk_thermal_put_bank(bank);
++
++ for (sp = 0; sp < 3; sp++) {
++ if (irqstat & TEMPMONINT_LOW_OFS(sp)) {
++ update = true;
++ dev_vdbg(mt->dev, "bank %d sensor %d low offset interrupt\n",
++ bank->id, sp);
++ }
++
++ if (irqstat & TEMPMONINT_HIGH_OFS(sp)) {
++ update = true;
++ dev_vdbg(mt->dev, "bank %d sensor %d high offset interrupt\n",
++ bank->id, sp);
++ }
++ }
++
++ if (update)
++ thermal_zone_device_update(bank->tz);
++}
++
++static irqreturn_t mtk_thermal_irq(int irq, void *dev_id)
++{
++ struct mtk_thermal *mt = dev_id;
++ u32 irqstat = 0;
++ int i;
++
++ irqstat = readl(mt->thermal_base + THERMINTST);
++
++ dev_vdbg(mt->dev, "thermal_interrupt_handler : THERMINTST = 0x%x\n",
++ irqstat);
++
++ for (i = 0; i < MT8173_NUM_BANKS; i++) {
++ if (!(irqstat & (1 << i)))
++ mtk_thermal_irq_bank(&mt->banks[i]);
++ }
++
++ return IRQ_HANDLED;
++}
++
++static int mtk_read_temp(void *data, int *temp)
++{
++ struct mtk_thermal_bank *bank = data;
++
++ mtk_thermal_get_bank(bank);
++
++ *temp = mtk_thermal_bank_temperature(bank);
++
++ mtk_thermal_put_bank(bank);
++
++ return 0;
++}
++
++static int mtk_set_trips(void *data, int low, int high)
++{
++ struct mtk_thermal_bank *bank = data;
++ struct mtk_thermal *mt = bank->mt;
++ int i;
++ u32 val, enable_mask;
++ u32 raw_low, raw_high;
++
++ raw_low = mcelsius_to_raw(mt, low);
++ raw_high = mcelsius_to_raw(mt, high);
++
++ mtk_thermal_get_bank(bank);
++
++ writel(0x0, mt->thermal_base + TEMPMONINT);
++
++ writel(TEMPPROTCTL_SELECTED, mt->thermal_base + TEMPPROTCTL);
++
++ writel(raw_low, mt->thermal_base + TEMPOFFSETL);
++ writel(raw_high, mt->thermal_base + TEMPOFFSETH);
++
++ enable_mask = readl(mt->thermal_base + TEMPMONCTL0);
++
++ val = 0;
++ for (i = 0; i < MT8173_NUM_SENSING_POINTS; i++)
++ if (enable_mask & (1 << i))
++ val |= TEMPMONINT_LOW_OFS(i) | TEMPMONINT_HIGH_OFS(i);
++
++ writel(val, mt->thermal_base + TEMPMONINT);
++
++ mtk_thermal_put_bank(bank);
++
++ dev_dbg(mt->dev, "new boundaries: %d (0x%04x) < x < %d (0x%04x)\n",
++ low, mcelsius_to_raw(mt, low),
++ high, mcelsius_to_raw(mt, high));
++
++ return 0;
++}
++
++static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
++ .get_temp = mtk_read_temp,
++ .set_trips = mtk_set_trips,
++};
++
++static void mtk_thermal_init_bank(struct mtk_thermal_bank *bank)
++{
++ struct mtk_thermal *mt = bank->mt;
++ struct mtk_thermal_bank_cfg *cfg = &bank_data[bank->id];
++ int i;
++
++ mtk_thermal_get_bank(bank);
++
++ /* bus clock 66M counting unit is 12 * 15.15ns * 256 = 46.540us */
++ writel(0x0000000c, mt->thermal_base + TEMPMONCTL1);
++
++ /*
++ * filt interval is 1 * 46.540us = 46.54us,
++ * sen interval is 429 * 46.540us = 19.96ms
++ */
++ writel(0x000101ad, mt->thermal_base + TEMPMONCTL2);
++
++ /* poll is set to 10u */
++ writel(0x00000300, mt->thermal_base + TEMPAHBPOLL);
++
++ /* temperature sampling control, 1 sample */
++ writel(0x00000000, mt->thermal_base + TEMPMSRCTL0);
++
++ /* exceed this polling time, IRQ would be inserted */
++ writel(0xffffffff, mt->thermal_base + TEMPAHBTO);
++
++ /* number of interrupts per event, 1 is enough */
++ writel(0x0, mt->thermal_base + TEMPMONIDET0);
++ writel(0x0, mt->thermal_base + TEMPMONIDET1);
++
++ /*
++ * The MT8173 thermal controller does not have its own ADC. Instead it
++ * uses AHB bus accesses to control the AUXADC. To do this the thermal
++ * controller has to be programmed with the physical addresses of the
++ * AUXADC registers and with the various bit positions in the AUXADC.
++ * Also the thermal controller controls a mux in the APMIXEDSYS register
++ * space.
++ */
++
++ /*
++ * this value will be stored to TEMPPNPMUXADDR (TEMPSPARE0)
++ * automatically by hw
++ */
++ writel(1 << MT8173_TEMP_AUXADC_CHANNEL, mt->thermal_base + TEMPADCMUX);
++
++ /* AHB address for auxadc mux selection */
++ writel(mt->auxadc_phys_base + 0x00c,
++ mt->thermal_base + TEMPADCMUXADDR);
++
++ /* AHB address for pnp sensor mux selection */
++ writel(mt->apmixed_phys_base + 0x0604,
++ mt->thermal_base + TEMPPNPMUXADDR);
++
++ /* AHB value for auxadc enable */
++ writel(1 << MT8173_TEMP_AUXADC_CHANNEL, mt->thermal_base + TEMPADCEN);
++
++ /* AHB address for auxadc enable (channel 0 immediate mode selected) */
++ writel(mt->auxadc_phys_base + AUXADC_CON1_SET_V,
++ mt->thermal_base + TEMPADCENADDR);
++
++ /* AHB address for auxadc valid bit */
++ writel(mt->auxadc_phys_base + AUXADC_DATA(MT8173_TEMP_AUXADC_CHANNEL),
++ mt->thermal_base + TEMPADCVALIDADDR);
++
++ /* AHB address for auxadc voltage output */
++ writel(mt->auxadc_phys_base + AUXADC_DATA(MT8173_TEMP_AUXADC_CHANNEL),
++ mt->thermal_base + TEMPADCVOLTADDR);
++
++ /* read valid & voltage are at the same register */
++ writel(0x0, mt->thermal_base + TEMPRDCTRL);
++
++ /* indicate where the valid bit is */
++ writel(TEMPADCVALIDMASK_VALID_HIGH | TEMPADCVALIDMASK_VALID_POS(12),
++ mt->thermal_base + TEMPADCVALIDMASK);
++
++ /* no shift */
++ writel(0x0, mt->thermal_base + TEMPADCVOLTAGESHIFT);
++
++ /* enable auxadc mux write transaction */
++ writel(TEMPADCWRITECTRL_ADC_MUX_WRITE,
++ mt->thermal_base + TEMPADCWRITECTRL);
++
++ for (i = 0; i < MT8173_NUM_SENSING_POINTS; i++)
++ writel(sensor_mux_values[cfg->sensors[i]],
++ mt->thermal_base + tempadcpnp_ofs[i]);
++
++ writel(cfg->enable_mask, mt->thermal_base + TEMPMONCTL0);
++
++ writel(TEMPADCWRITECTRL_ADC_PNP_WRITE | TEMPADCWRITECTRL_ADC_MUX_WRITE,
++ mt->thermal_base + TEMPADCWRITECTRL);
++
++ mtk_thermal_put_bank(bank);
++}
++
++static u64 of_get_phys_base(struct device_node *np)
++{
++ u64 size64;
++ const __be32 *regaddr_p;
++
++ regaddr_p = of_get_address(np, 0, &size64, NULL);
++ if (!regaddr_p)
++ return OF_BAD_ADDR;
++
++ return of_translate_address(np, regaddr_p);
++}
++
++static int mtk_thermal_probe(struct platform_device *pdev)
++{
++ int ret, i;
++ struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node;
++ int irq;
++ struct mtk_thermal *mt;
++ struct resource *res;
++
++ mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
++ if (!mt)
++ return -ENOMEM;
++
++ mt->clk_peri_therm = devm_clk_get(&pdev->dev, "therm");
++ if (IS_ERR(mt->clk_peri_therm))
++ return PTR_ERR(mt->clk_peri_therm);
++
++ mt->clk_auxadc = devm_clk_get(&pdev->dev, "auxadc");
++ if (IS_ERR(mt->clk_auxadc))
++ return PTR_ERR(mt->clk_auxadc);
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ mt->thermal_base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(mt->thermal_base))
++ return PTR_ERR(mt->thermal_base);
++
++ mt->reset = devm_reset_control_get(&pdev->dev, "therm");
++ if (IS_ERR(mt->reset)) {
++ ret = PTR_ERR(mt->reset);
++ dev_err(&pdev->dev, "cannot get reset: %d\n", ret);
++ return ret;
++ }
++
++ mutex_init(&mt->lock);
++
++ mt->dev = &pdev->dev;
++
++ auxadc = of_parse_phandle(np, "auxadc", 0);
++ if (!auxadc) {
++ dev_err(&pdev->dev, "missing auxadc node\n");
++ return -ENODEV;
++ }
++
++ mt->auxadc_phys_base = of_get_phys_base(auxadc);
++ if (mt->auxadc_phys_base == OF_BAD_ADDR) {
++ dev_err(&pdev->dev, "Can't get auxadc phys address\n");
++ return -EINVAL;
++ }
++
++ apmixedsys = of_parse_phandle(np, "apmixedsys", 0);
++ if (!apmixedsys) {
++ dev_err(&pdev->dev, "missing apmixedsys node\n");
++ return -ENODEV;
++ }
++
++ mt->apmixed_phys_base = of_get_phys_base(apmixedsys);
++ if (mt->apmixed_phys_base == OF_BAD_ADDR) {
++ dev_err(&pdev->dev, "Can't get auxadc phys address\n");
++ return -EINVAL;
++ }
++
++ irq = platform_get_irq(pdev, 0);
++ if (!irq) {
++ dev_err(&pdev->dev, "Can't find irq\n");
++ return -EINVAL;
++ }
++
++ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, mtk_thermal_irq,
++ IRQF_ONESHOT, THERMAL_NAME, mt);
++ if (ret) {
++ dev_err(&pdev->dev, "Can't request irq %d: %d\n", irq, ret);
++ return ret;
++ }
++
++ ret = clk_prepare_enable(mt->clk_auxadc);
++ if (ret) {
++ dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);
++ return ret;
++ }
++
++ reset_control_reset(mt->reset);
++
++ ret = clk_prepare_enable(mt->clk_peri_therm);
++ if (ret) {
++ dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);
++ goto err_enable_clk;
++ }
++
++ /*
++ * These calibration values should finally be provided by the
++ * firmware or fuses. For now use default values.
++ */
++ mt->adc_ge = ((512 - 512) * 10000) / 4096;
++ mt->adc_oe = 512 - 512;
++ mt->degc_cali = 40;
++ mt->o_slope = 0;
++ mt->vts = 260;
++
++ for (i = 0; i < MT8173_NUM_BANKS; i++) {
++ struct mtk_thermal_bank *bank = &mt->banks[i];
++
++ bank->id = i;
++ bank->mt = mt;
++ mtk_thermal_init_bank(&mt->banks[i]);
++ }
++
++ platform_set_drvdata(pdev, mt);
++
++ /*
++ * This is needed after initialising the banks because otherwise
++ * the first temperature read contains bogus high temperatures which
++ * immediately cause a system shutdown.
++ */
++ msleep(100);
++
++ for (i = 0; i < MT8173_NUM_BANKS; i++) {
++ struct mtk_thermal_bank *bank = &mt->banks[i];
++
++ bank->tz = thermal_zone_of_sensor_register(&pdev->dev, i, bank,
++ &mtk_thermal_ops);
++ }
++
++ return 0;
++
++err_enable_clk:
++ clk_disable_unprepare(mt->clk_peri_therm);
++
++ return ret;
++}
++
++static int mtk_thermal_remove(struct platform_device *pdev)
++{
++ struct mtk_thermal *mt = platform_get_drvdata(pdev);
++ int i;
++
++ for (i = 0; i < MT8173_NUM_BANKS; i++) {
++ struct mtk_thermal_bank *bank = &mt->banks[i];
++
++ if (!IS_ERR(bank))
++ thermal_zone_of_sensor_unregister(&pdev->dev, bank->tz);
++ }
++
++ clk_disable_unprepare(mt->clk_peri_therm);
++ clk_disable_unprepare(mt->clk_auxadc);
++
++ return 0;
++}
++
++static const struct of_device_id mtk_thermal_of_match[] = {
++ {
++ .compatible = "mediatek,mt8173-thermal",
++ }, {
++ },
++};
++
++static struct platform_driver mtk_thermal_driver = {
++ .probe = mtk_thermal_probe,
++ .remove = mtk_thermal_remove,
++ .driver = {
++ .name = THERMAL_NAME,
++ .of_match_table = mtk_thermal_of_match,
++ },
++};
++
++module_platform_driver(mtk_thermal_driver);
+--
+1.7.10.4
+