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 <mpatocka@redhat.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
index 16359ab..b9a444e 100644
--- a/drivers/cpufreq/powernow-k6.c
+++ b/drivers/cpufreq/powernow-k6.c
@@ -37,17 +37,20 @@
/* Clock ratio multiplied by 10 - see table 27 in AMD#23446 */
static struct cpufreq_frequency_table clock_ratio[] = {
- {45, /* 000 -> 4.5x */ 0},
- {50, /* 001 -> 5.0x */ 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},
+ {55, /* 011 -> 5.5x */ 0},
+ {50, /* 001 -> 5.0x */ 0},
+ {45, /* 000 -> 4.5x */ 0},
+ {40, /* 010 -> 4.0x */ 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;
@@ -91,7 +94,7 @@
local_irq_enable();
- return clock_ratio[(invalue >> 5)&7].driver_data;
+ return clock_ratio[register_to_index[(invalue >> 5)&7]].driver_data;
}
static void powernow_k6_set_cpu_multiplier(unsigned int best_i)
@@ -111,7 +114,7 @@
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 */