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path: root/drivers/cpufreq/powernow-k7.c
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Diffstat (limited to 'drivers/cpufreq/powernow-k7.c')
-rw-r--r--drivers/cpufreq/powernow-k7.c101
1 files changed, 32 insertions, 69 deletions
diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c
index d71d9f37235..e61e224475a 100644
--- a/drivers/cpufreq/powernow-k7.c
+++ b/drivers/cpufreq/powernow-k7.c
@@ -27,7 +27,7 @@
#include <asm/timer.h> /* Needed for recalibrate_cpu_khz() */
#include <asm/msr.h>
-#include <asm/system.h>
+#include <asm/cpu_device_id.h>
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
#include <linux/acpi.h>
@@ -110,18 +110,19 @@ static int check_fsb(unsigned int fsbspeed)
return delta < 5;
}
+static const struct x86_cpu_id powernow_k7_cpuids[] = {
+ { X86_VENDOR_AMD, 6, },
+ {}
+};
+MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids);
+
static int check_powernow(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int maxei, eax, ebx, ecx, edx;
- if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) {
-#ifdef MODULE
- printk(KERN_INFO PFX "This module only works with "
- "AMD K7 CPUs\n");
-#endif
+ if (!x86_match_cpu(powernow_k7_cpuids))
return 0;
- }
/* Get maximum capabilities */
maxei = cpuid_eax(0x80000000);
@@ -176,7 +177,7 @@ static int get_ranges(unsigned char *pst)
unsigned int speed;
u8 fid, vid;
- powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
+ powernow_table = kzalloc((sizeof(*powernow_table) *
(number_scales + 1)), GFP_KERNEL);
if (!powernow_table)
return -ENOMEM;
@@ -185,7 +186,7 @@ static int get_ranges(unsigned char *pst)
fid = *pst++;
powernow_table[j].frequency = (fsb * fid_codes[fid]) / 10;
- powernow_table[j].index = fid; /* lower 8 bits */
+ powernow_table[j].driver_data = fid; /* lower 8 bits */
speed = powernow_table[j].frequency;
@@ -202,7 +203,7 @@ static int get_ranges(unsigned char *pst)
maximum_speed = speed;
vid = *pst++;
- powernow_table[j].index |= (vid << 8); /* upper 8 bits */
+ powernow_table[j].driver_data |= (vid << 8); /* upper 8 bits */
pr_debug(" FID: 0x%x (%d.%dx [%dMHz]) "
"VID: 0x%x (%d.%03dV)\n", fid, fid_codes[fid] / 10,
@@ -211,7 +212,7 @@ static int get_ranges(unsigned char *pst)
mobile_vid_table[vid]%1000);
}
powernow_table[number_scales].frequency = CPUFREQ_TABLE_END;
- powernow_table[number_scales].index = 0;
+ powernow_table[number_scales].driver_data = 0;
return 0;
}
@@ -247,7 +248,7 @@ static void change_VID(int vid)
}
-static void change_speed(unsigned int index)
+static int powernow_target(struct cpufreq_policy *policy, unsigned int index)
{
u8 fid, vid;
struct cpufreq_freqs freqs;
@@ -259,10 +260,8 @@ static void change_speed(unsigned int index)
* vid are the upper 8 bits.
*/
- fid = powernow_table[index].index & 0xFF;
- vid = (powernow_table[index].index & 0xFF00) >> 8;
-
- freqs.cpu = 0;
+ fid = powernow_table[index].driver_data & 0xFF;
+ vid = (powernow_table[index].driver_data & 0xFF00) >> 8;
rdmsrl(MSR_K7_FID_VID_STATUS, fidvidstatus.val);
cfid = fidvidstatus.bits.CFID;
@@ -270,8 +269,6 @@ static void change_speed(unsigned int index)
freqs.new = powernow_table[index].frequency;
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
/* Now do the magic poking into the MSRs. */
if (have_a0 == 1) /* A0 errata 5 */
@@ -291,7 +288,7 @@ static void change_speed(unsigned int index)
if (have_a0 == 1)
local_irq_enable();
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+ return 0;
}
@@ -310,8 +307,7 @@ static int powernow_acpi_init(void)
goto err0;
}
- acpi_processor_perf = kzalloc(sizeof(struct acpi_processor_performance),
- GFP_KERNEL);
+ acpi_processor_perf = kzalloc(sizeof(*acpi_processor_perf), GFP_KERNEL);
if (!acpi_processor_perf) {
retval = -ENOMEM;
goto err0;
@@ -347,7 +343,7 @@ static int powernow_acpi_init(void)
goto err2;
}
- powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) *
+ powernow_table = kzalloc((sizeof(*powernow_table) *
(number_scales + 1)), GFP_KERNEL);
if (!powernow_table) {
retval = -ENOMEM;
@@ -374,8 +370,8 @@ static int powernow_acpi_init(void)
fid = pc.bits.fid;
powernow_table[i].frequency = fsb * fid_codes[fid] / 10;
- powernow_table[i].index = fid; /* lower 8 bits */
- powernow_table[i].index |= (vid << 8); /* upper 8 bits */
+ powernow_table[i].driver_data = fid; /* lower 8 bits */
+ powernow_table[i].driver_data |= (vid << 8); /* upper 8 bits */
speed = powernow_table[i].frequency;
speed_mhz = speed / 1000;
@@ -418,7 +414,7 @@ static int powernow_acpi_init(void)
}
powernow_table[i].frequency = CPUFREQ_TABLE_END;
- powernow_table[i].index = 0;
+ powernow_table[i].driver_data = 0;
/* notify BIOS that we exist */
acpi_processor_notify_smm(THIS_MODULE);
@@ -498,7 +494,7 @@ static int powernow_decode_bios(int maxfid, int startvid)
"relevant to this CPU).\n",
psb->numpst);
- p += sizeof(struct psb_s);
+ p += sizeof(*psb);
pst = (struct pst_s *) p;
@@ -511,12 +507,12 @@ static int powernow_decode_bios(int maxfid, int startvid)
(maxfid == pst->maxfid) &&
(startvid == pst->startvid)) {
print_pst_entry(pst, j);
- p = (char *)pst + sizeof(struct pst_s);
+ p = (char *)pst + sizeof(*pst);
ret = get_ranges(p);
return ret;
} else {
unsigned int k;
- p = (char *)pst + sizeof(struct pst_s);
+ p = (char *)pst + sizeof(*pst);
for (k = 0; k < number_scales; k++)
p += 2;
}
@@ -535,27 +531,6 @@ static int powernow_decode_bios(int maxfid, int startvid)
}
-static int powernow_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- unsigned int newstate;
-
- if (cpufreq_frequency_table_target(policy, powernow_table, target_freq,
- relation, &newstate))
- return -EINVAL;
-
- change_speed(newstate);
-
- return 0;
-}
-
-
-static int powernow_verify(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy, powernow_table);
-}
-
/*
* We use the fact that the bus frequency is somehow
* a multiple of 100000/3 khz, then we compute sgtc according
@@ -564,7 +539,7 @@ static int powernow_verify(struct cpufreq_policy *policy)
* We will then get the same kind of behaviour already tested under
* the "well-known" other OS.
*/
-static int __cpuinit fixup_sgtc(void)
+static int fixup_sgtc(void)
{
unsigned int sgtc;
unsigned int m;
@@ -598,7 +573,7 @@ static unsigned int powernow_get(unsigned int cpu)
}
-static int __cpuinit acer_cpufreq_pst(const struct dmi_system_id *d)
+static int acer_cpufreq_pst(const struct dmi_system_id *d)
{
printk(KERN_WARNING PFX
"%s laptop with broken PST tables in BIOS detected.\n",
@@ -616,7 +591,7 @@ static int __cpuinit acer_cpufreq_pst(const struct dmi_system_id *d)
* A BIOS update is all that can save them.
* Mention this, and disable cpufreq.
*/
-static struct dmi_system_id __cpuinitdata powernow_dmi_table[] = {
+static struct dmi_system_id powernow_dmi_table[] = {
{
.callback = acer_cpufreq_pst,
.ident = "Acer Aspire",
@@ -628,7 +603,7 @@ static struct dmi_system_id __cpuinitdata powernow_dmi_table[] = {
{ }
};
-static int __cpuinit powernow_cpu_init(struct cpufreq_policy *policy)
+static int powernow_cpu_init(struct cpufreq_policy *policy)
{
union msr_fidvidstatus fidvidstatus;
int result;
@@ -680,17 +655,11 @@ static int __cpuinit powernow_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency =
cpufreq_scale(2000000UL, fsb, latency);
- policy->cur = powernow_get(0);
-
- cpufreq_frequency_table_get_attr(powernow_table, policy->cpu);
-
- return cpufreq_frequency_table_cpuinfo(policy, powernow_table);
+ return cpufreq_table_validate_and_show(policy, powernow_table);
}
static int powernow_cpu_exit(struct cpufreq_policy *policy)
{
- cpufreq_frequency_table_put_attr(policy->cpu);
-
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
if (acpi_processor_perf) {
acpi_processor_unregister_performance(acpi_processor_perf, 0);
@@ -703,14 +672,9 @@ static int powernow_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
-static struct freq_attr *powernow_table_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
static struct cpufreq_driver powernow_driver = {
- .verify = powernow_verify,
- .target = powernow_target,
+ .verify = cpufreq_generic_frequency_table_verify,
+ .target_index = powernow_target,
.get = powernow_get,
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
.bios_limit = acpi_processor_get_bios_limit,
@@ -718,8 +682,7 @@ static struct cpufreq_driver powernow_driver = {
.init = powernow_cpu_init,
.exit = powernow_cpu_exit,
.name = "powernow-k7",
- .owner = THIS_MODULE,
- .attr = powernow_table_attr,
+ .attr = cpufreq_generic_attr,
};
static int __init powernow_init(void)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:09:26 +0000