[ARM] pxa: cpufreq-pxa2xx: allow frequency table selection
Following the removal of the "->policy" usage for PXA255 in patch
459fc208abd1b365fa013c17d433dfb5b4bc1e3a (cpufreq: remove
policy->governor setting in drivers initialization), this patch
introduces an option (called "pxa255_turbo_table") to select either
the "run" or "turbo" frequency table.
It also cures the runtime warning that was printed each time the
frequency was changed.
Got rid of all references to CPUFREQ_POLICY_* for pxa255, and sticked
with the run/turbo thing.
Tested on an Arcom/Eurotech Viper.
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-pxa/cpufreq-pxa2xx.c b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
index 1f272ea..6bb678d 100644
--- a/arch/arm/mach-pxa/cpufreq-pxa2xx.c
+++ b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
@@ -109,6 +109,10 @@
static struct cpufreq_frequency_table
pxa255_turbo_freq_table[NUM_PXA25x_TURBO_FREQS+1];
+static unsigned int pxa255_turbo_table;
+module_param(pxa255_turbo_table, uint, 0);
+MODULE_PARM_DESC(pxa255_turbo_table, "Selects the frequency table (0 = run table, !0 = turbo table)");
+
/*
* PXA270 definitions
*
@@ -158,22 +162,16 @@
extern unsigned get_clk_frequency_khz(int info);
-static void find_freq_tables(struct cpufreq_policy *policy,
- struct cpufreq_frequency_table **freq_table,
+static void find_freq_tables(struct cpufreq_frequency_table **freq_table,
pxa_freqs_t **pxa_freqs)
{
if (cpu_is_pxa25x()) {
- if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
+ if (!pxa255_turbo_table) {
*pxa_freqs = pxa255_run_freqs;
*freq_table = pxa255_run_freq_table;
- } else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
+ } else {
*pxa_freqs = pxa255_turbo_freqs;
*freq_table = pxa255_turbo_freq_table;
- } else {
- printk("CPU PXA: Unknown policy found. "
- "Using CPUFREQ_POLICY_PERFORMANCE\n");
- *pxa_freqs = pxa255_run_freqs;
- *freq_table = pxa255_run_freq_table;
}
}
if (cpu_is_pxa27x()) {
@@ -212,7 +210,7 @@
pxa_freqs_t *pxa_freqs;
int ret;
- find_freq_tables(policy, &pxa_freqs_table, &pxa_freqs);
+ find_freq_tables(&pxa_freqs_table, &pxa_freqs);
ret = cpufreq_frequency_table_verify(policy, pxa_freqs_table);
if (freq_debug)
@@ -240,7 +238,7 @@
unsigned int unused, preset_mdrefr, postset_mdrefr, cclkcfg;
/* Get the current policy */
- find_freq_tables(policy, &pxa_freqs_table, &pxa_freq_settings);
+ find_freq_tables(&pxa_freqs_table, &pxa_freq_settings);
/* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
@@ -329,6 +327,8 @@
{
int i;
unsigned int freq;
+ struct cpufreq_frequency_table *pxa255_freq_table;
+ pxa_freqs_t *pxa255_freqs;
/* try to guess pxa27x cpu */
if (cpu_is_pxa27x())
@@ -354,6 +354,8 @@
}
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
+ pxa255_turbo_table = !!pxa255_turbo_table;
+
/* Generate the pxa27x cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA27x_FREQS; i++) {
freq = pxa27x_freqs[i].khz;
@@ -368,8 +370,12 @@
* Set the policy's minimum and maximum frequencies from the tables
* just constructed. This sets cpuinfo.mxx_freq, min and max.
*/
- if (cpu_is_pxa25x())
- cpufreq_frequency_table_cpuinfo(policy, pxa255_run_freq_table);
+ if (cpu_is_pxa25x()) {
+ find_freq_tables(&pxa255_freq_table, &pxa255_freqs);
+ pr_info("PXA255 cpufreq using %s frequency table\n",
+ pxa255_turbo_table ? "turbo" : "run");
+ cpufreq_frequency_table_cpuinfo(policy, pxa255_freq_table);
+ }
else if (cpu_is_pxa27x())
cpufreq_frequency_table_cpuinfo(policy, pxa27x_freq_table);