diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2013-12-11 19:39:19 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-04-30 16:23:27 +0100 |
| commit | 3d793c474f42b0443b7d13c851d8960de4485184 (patch) | |
| tree | 0b97578c36ce256ee1fb4c3db410eb45d30c5fd9 | |
| parent | 133eadd570837d44b8e9828f0189cb75dde9b7ac (diff) | |
powernow-k6: reorder frequencies
commit 22c73795b101597051924556dce019385a1e2fa0 upstream.
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>
[bwh: Backported to 3.2: cpu_frequency_table::driver_data is called index]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/cpufreq/powernow-k6.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index ec6898e1400..2c6b671bde8 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -36,17 +36,20 @@ MODULE_PARM_DESC(bus_frequency, "Bus frequency in kHz"); /* 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_multiplier(void) 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_multiplier(unsigned int best_i) 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 */ |