upstream commit 22c73795b101597051924556dce019385a1e2fa0
Author: Mikulas Patocka <[email protected]>
Date: Wed Dec 11 19:39:19 2013 -0500
powernow-k6: reorder frequencies
This patch reorders reported frequencies from the highest to the lowest,
just like in other frequency drivers.
Signed-off-by: Mikulas Patocka <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
arch/x86/kernel/cpu/cpufreq/powernow-k6.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
Index: linux-stable/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
===================================================================
--- linux-stable.orig/arch/x86/kernel/cpu/cpufreq/powernow-k6.c 2014-04-08
23:39:28.445783709 +0200
+++ linux-stable/arch/x86/kernel/cpu/cpufreq/powernow-k6.c 2014-04-08
23:39:31.895292602 +0200
@@ -36,17 +36,20 @@ MODULE_PARM_DESC(bus_frequency, "Bus fre
/* Clock ratio multiplied by 10 - see table 27 in AMD#23446 */
static struct cpufreq_frequency_table clock_ratio[] = {
- {45, /* 000 -> 4.5x */ 0},
+ {60, /* 110 -> 6.0x */ 0},
+ {55, /* 011 -> 5.5x */ 0},
{50, /* 001 -> 5.0x */ 0},
+ {45, /* 000 -> 4.5x */ 0},
{40, /* 010 -> 4.0x */ 0},
- {55, /* 011 -> 5.5x */ 0},
- {20, /* 100 -> 2.0x */ 0},
- {30, /* 101 -> 3.0x */ 0},
- {60, /* 110 -> 6.0x */ 0},
{35, /* 111 -> 3.5x */ 0},
+ {30, /* 101 -> 3.0x */ 0},
+ {20, /* 100 -> 2.0x */ 0},
{0, CPUFREQ_TABLE_END}
};
+static const u8 index_to_register[8] = { 6, 3, 1, 0, 2, 7, 5, 4 };
+static const u8 register_to_index[8] = { 3, 2, 4, 1, 7, 6, 0, 5 };
+
static const struct {
unsigned freq;
unsigned mult;
@@ -90,7 +93,7 @@ static int powernow_k6_get_cpu_multiplie
local_irq_enable();
- return clock_ratio[(invalue >> 5)&7].index;
+ return clock_ratio[register_to_index[(invalue >> 5)&7]].index;
}
static void powernow_k6_set_cpu_multiplier(unsigned int best_i)
@@ -110,7 +113,7 @@ static void powernow_k6_set_cpu_multipli
write_cr0(cr0 | X86_CR0_CD);
wbinvd();
- outvalue = (1<<12) | (1<<10) | (1<<9) | (best_i<<5);
+ outvalue = (1<<12) | (1<<10) | (1<<9) | (index_to_register[best_i]<<5);
msrval = POWERNOW_IOPORT + 0x1;
wrmsr(MSR_K6_EPMR, msrval, 0); /* enable the PowerNow port */
--
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