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Commit 64f09aa9 authored by Huacai Chen's avatar Huacai Chen Committed by Ralf Baechle
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MIPS: Loongson-3: Add CPU Hwmon platform driver 



This add CPU Hwmon (temperature sensor) platform driver for Loongson-3.

Signed-off-by: default avatarHuacai Chen <chenhc@lemote.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/9617/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent f14ceff7

arch/mips/include/asm/mach-loongson/loongson.h

+4 −0
Original line number Diff line number Diff line
@@ -255,6 +255,10 @@ static inline void do_perfcnt_IRQ(void) 
extern u64 loongson_chipcfg[MAX_PACKAGES];

#define LOONGSON_CHIPCFG(id) (*(volatile u32 *)(loongson_chipcfg[id]))



/* Chip Temperature registor of each physical cpu package, PRid >= Loongson-3A */

extern u64 loongson_chiptemp[MAX_PACKAGES];

#define LOONGSON_CHIPTEMP(id) (*(volatile u32 *)(loongson_chiptemp[id]))



/* Freq Control register of each physical cpu package, PRid >= Loongson-3B */

extern u64 loongson_freqctrl[MAX_PACKAGES];

#define LOONGSON_FREQCTRL(id) (*(volatile u32 *)(loongson_freqctrl[id]))

arch/mips/loongson/common/env.c

+9 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ struct efi_memory_map_loongson *loongson_memmap; 
struct loongson_system_configuration loongson_sysconf;



u64 loongson_chipcfg[MAX_PACKAGES] = {0xffffffffbfc00180};

u64 loongson_chiptemp[MAX_PACKAGES];

u64 loongson_freqctrl[MAX_PACKAGES];



unsigned long long smp_group[4];
@@ -97,6 +98,10 @@ void __init prom_init_env(void) 
		loongson_chipcfg[1] = 0x900010001fe00180;

		loongson_chipcfg[2] = 0x900020001fe00180;

		loongson_chipcfg[3] = 0x900030001fe00180;

		loongson_chiptemp[0] = 0x900000001fe0019c;

		loongson_chiptemp[1] = 0x900010001fe0019c;

		loongson_chiptemp[2] = 0x900020001fe0019c;

		loongson_chiptemp[3] = 0x900030001fe0019c;

		loongson_sysconf.ht_control_base = 0x90000EFDFB000000;

		loongson_sysconf.workarounds = WORKAROUND_CPUFREQ;

	} else if (ecpu->cputype == Loongson_3B) {
@@ -110,6 +115,10 @@ void __init prom_init_env(void) 
		loongson_chipcfg[1] = 0x900020001fe00180;

		loongson_chipcfg[2] = 0x900040001fe00180;

		loongson_chipcfg[3] = 0x900060001fe00180;

		loongson_chiptemp[0] = 0x900000001fe0019c;

		loongson_chiptemp[1] = 0x900020001fe0019c;

		loongson_chiptemp[2] = 0x900040001fe0019c;

		loongson_chiptemp[3] = 0x900060001fe0019c;

		loongson_freqctrl[0] = 0x900000001fe001d0;

		loongson_freqctrl[1] = 0x900020001fe001d0;

		loongson_freqctrl[2] = 0x900040001fe001d0;

drivers/platform/Kconfig

+3 −0
Original line number Diff line number Diff line 
if X86

source "drivers/platform/x86/Kconfig"

endif

if MIPS

source "drivers/platform/mips/Kconfig"

endif

if GOLDFISH

source "drivers/platform/goldfish/Kconfig"

endif

drivers/platform/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
#



obj-$(CONFIG_X86)		+= x86/

obj-$(CONFIG_MIPS)		+= mips/

obj-$(CONFIG_OLPC)		+= olpc/

obj-$(CONFIG_GOLDFISH)		+= goldfish/

obj-$(CONFIG_CHROME_PLATFORMS)	+= chrome/

drivers/platform/mips/Kconfig

0 → 100644
+26 −0
Original line number Diff line number Diff line 
#

# MIPS Platform Specific Drivers

#



menuconfig MIPS_PLATFORM_DEVICES

	bool "MIPS Platform Specific Device Drivers"

	default y

	help

	  Say Y here to get to see options for device drivers of various

	  MIPS platforms, including vendor-specific netbook/laptop/desktop

	  extension and hardware monitor drivers. This option itself does

	  not add any kernel code.



	  If you say N, all options in this submenu will be skipped and disabled.



if MIPS_PLATFORM_DEVICES



config CPU_HWMON

	tristate "Loongson CPU HWMon Driver"

	depends on LOONGSON_MACH3X

	select HWMON

	default y

	help

	  Loongson-3A/3B CPU Hwmon (temperature sensor) driver.



endif # MIPS_PLATFORM_DEVICES