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authorHuacai Chen <chenhc@lemote.com>2017-06-22 23:06:48 +0800
committerRalf Baechle <ralf@linux-mips.org>2017-06-28 12:22:42 +0200
commit0a00024d7a779b283db2a02130ffa46f47634d0c (patch)
tree519410b634828c62075b23cede685fab98d04130 /drivers/platform
parentd3f616346def161cfb0e4153692713f066755639 (diff)
MIPS: Loongson: Add Loongson-3A R3 basic support
Loongson-3A R3 is very similar to Loongson-3A R2. All Loongson-3 CPU family: Code-name Brand-name PRId Loongson-3A R1 Loongson-3A1000 0x6305 Loongson-3A R2 Loongson-3A2000 0x6308 Loongson-3A R3 Loongson-3A3000 0x6309 Loongson-3B R1 Loongson-3B1000 0x6306 Loongson-3B R2 Loongson-3B1500 0x6307 Signed-off-by: Huacai Chen <chenhc@lemote.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J . Hill <Steven.Hill@cavium.com> Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16585/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/mips/cpu_hwmon.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
index 4300a558d0f3..46ab7d86ae1c 100644
--- a/drivers/platform/mips/cpu_hwmon.c
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -17,14 +17,23 @@
*/
int loongson3_cpu_temp(int cpu)
{
- u32 reg;
+ u32 reg, prid_rev;
reg = LOONGSON_CHIPTEMP(cpu);
- if ((read_c0_prid() & PRID_REV_MASK) == PRID_REV_LOONGSON3A_R1)
+ prid_rev = read_c0_prid() & PRID_REV_MASK;
+ switch (prid_rev) {
+ case PRID_REV_LOONGSON3A_R1:
reg = (reg >> 8) & 0xff;
- else
+ break;
+ case PRID_REV_LOONGSON3A_R2:
+ case PRID_REV_LOONGSON3B_R1:
+ case PRID_REV_LOONGSON3B_R2:
reg = ((reg >> 8) & 0xff) - 100;
-
+ break;
+ case PRID_REV_LOONGSON3A_R3:
+ reg = (reg & 0xffff)*731/0x4000 - 273;
+ break;
+ }
return (int)reg * 1000;
}