|
@@ -49,125 +49,216 @@ MODULE_PARM_DESC(freq_debug, "Set the debug messages to on=1/off=0");
|
|
#define freq_debug 0
|
|
#define freq_debug 0
|
|
#endif
|
|
#endif
|
|
|
|
|
|
|
|
+static unsigned int pxa27x_maxfreq;
|
|
|
|
+module_param(pxa27x_maxfreq, uint, 0);
|
|
|
|
+MODULE_PARM_DESC(pxa27x_maxfreq, "Set the pxa27x maxfreq in MHz"
|
|
|
|
+ "(typically 624=>pxa270, 416=>pxa271, 520=>pxa272)");
|
|
|
|
+
|
|
typedef struct {
|
|
typedef struct {
|
|
unsigned int khz;
|
|
unsigned int khz;
|
|
unsigned int membus;
|
|
unsigned int membus;
|
|
unsigned int cccr;
|
|
unsigned int cccr;
|
|
unsigned int div2;
|
|
unsigned int div2;
|
|
|
|
+ unsigned int cclkcfg;
|
|
} pxa_freqs_t;
|
|
} pxa_freqs_t;
|
|
|
|
|
|
/* Define the refresh period in mSec for the SDRAM and the number of rows */
|
|
/* Define the refresh period in mSec for the SDRAM and the number of rows */
|
|
-#define SDRAM_TREF 64 /* standard 64ms SDRAM */
|
|
|
|
-#define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */
|
|
|
|
-#define MDREFR_DRI(x) (((x) * SDRAM_TREF) / (SDRAM_ROWS * 32))
|
|
|
|
-
|
|
|
|
-#define CCLKCFG_TURBO 0x1
|
|
|
|
-#define CCLKCFG_FCS 0x2
|
|
|
|
-#define PXA25x_MIN_FREQ 99500
|
|
|
|
-#define PXA25x_MAX_FREQ 398100
|
|
|
|
-#define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2)
|
|
|
|
-#define MDREFR_DRI_MASK 0xFFF
|
|
|
|
|
|
+#define SDRAM_TREF 64 /* standard 64ms SDRAM */
|
|
|
|
+#define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */
|
|
|
|
|
|
|
|
+#define CCLKCFG_TURBO 0x1
|
|
|
|
+#define CCLKCFG_FCS 0x2
|
|
|
|
+#define CCLKCFG_HALFTURBO 0x4
|
|
|
|
+#define CCLKCFG_FASTBUS 0x8
|
|
|
|
+#define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2)
|
|
|
|
+#define MDREFR_DRI_MASK 0xFFF
|
|
|
|
|
|
|
|
+/*
|
|
|
|
+ * PXA255 definitions
|
|
|
|
+ */
|
|
/* Use the run mode frequencies for the CPUFREQ_POLICY_PERFORMANCE policy */
|
|
/* Use the run mode frequencies for the CPUFREQ_POLICY_PERFORMANCE policy */
|
|
|
|
+#define CCLKCFG CCLKCFG_TURBO | CCLKCFG_FCS
|
|
|
|
+
|
|
static pxa_freqs_t pxa255_run_freqs[] =
|
|
static pxa_freqs_t pxa255_run_freqs[] =
|
|
{
|
|
{
|
|
- /* CPU MEMBUS CCCR DIV2*/
|
|
|
|
- { 99500, 99500, 0x121, 1}, /* run= 99, turbo= 99, PXbus=50, SDRAM=50 */
|
|
|
|
- {132700, 132700, 0x123, 1}, /* run=133, turbo=133, PXbus=66, SDRAM=66 */
|
|
|
|
- {199100, 99500, 0x141, 0}, /* run=199, turbo=199, PXbus=99, SDRAM=99 */
|
|
|
|
- {265400, 132700, 0x143, 1}, /* run=265, turbo=265, PXbus=133, SDRAM=66 */
|
|
|
|
- {331800, 165900, 0x145, 1}, /* run=331, turbo=331, PXbus=166, SDRAM=83 */
|
|
|
|
- {398100, 99500, 0x161, 0}, /* run=398, turbo=398, PXbus=196, SDRAM=99 */
|
|
|
|
- {0,}
|
|
|
|
|
|
+ /* CPU MEMBUS CCCR DIV2 CCLKCFG run turbo PXbus SDRAM */
|
|
|
|
+ { 99500, 99500, 0x121, 1, CCLKCFG}, /* 99, 99, 50, 50 */
|
|
|
|
+ {132700, 132700, 0x123, 1, CCLKCFG}, /* 133, 133, 66, 66 */
|
|
|
|
+ {199100, 99500, 0x141, 0, CCLKCFG}, /* 199, 199, 99, 99 */
|
|
|
|
+ {265400, 132700, 0x143, 1, CCLKCFG}, /* 265, 265, 133, 66 */
|
|
|
|
+ {331800, 165900, 0x145, 1, CCLKCFG}, /* 331, 331, 166, 83 */
|
|
|
|
+ {398100, 99500, 0x161, 0, CCLKCFG}, /* 398, 398, 196, 99 */
|
|
};
|
|
};
|
|
-#define NUM_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs)
|
|
|
|
-
|
|
|
|
-static struct cpufreq_frequency_table pxa255_run_freq_table[NUM_RUN_FREQS+1];
|
|
|
|
|
|
|
|
/* Use the turbo mode frequencies for the CPUFREQ_POLICY_POWERSAVE policy */
|
|
/* Use the turbo mode frequencies for the CPUFREQ_POLICY_POWERSAVE policy */
|
|
static pxa_freqs_t pxa255_turbo_freqs[] =
|
|
static pxa_freqs_t pxa255_turbo_freqs[] =
|
|
{
|
|
{
|
|
- /* CPU MEMBUS CCCR DIV2*/
|
|
|
|
- { 99500, 99500, 0x121, 1}, /* run=99, turbo= 99, PXbus=50, SDRAM=50 */
|
|
|
|
- {199100, 99500, 0x221, 0}, /* run=99, turbo=199, PXbus=50, SDRAM=99 */
|
|
|
|
- {298500, 99500, 0x321, 0}, /* run=99, turbo=287, PXbus=50, SDRAM=99 */
|
|
|
|
- {298600, 99500, 0x1c1, 0}, /* run=199, turbo=287, PXbus=99, SDRAM=99 */
|
|
|
|
- {398100, 99500, 0x241, 0}, /* run=199, turbo=398, PXbus=99, SDRAM=99 */
|
|
|
|
- {0,}
|
|
|
|
|
|
+ /* CPU MEMBUS CCCR DIV2 CCLKCFG run turbo PXbus SDRAM */
|
|
|
|
+ { 99500, 99500, 0x121, 1, CCLKCFG}, /* 99, 99, 50, 50 */
|
|
|
|
+ {199100, 99500, 0x221, 0, CCLKCFG}, /* 99, 199, 50, 99 */
|
|
|
|
+ {298500, 99500, 0x321, 0, CCLKCFG}, /* 99, 287, 50, 99 */
|
|
|
|
+ {298600, 99500, 0x1c1, 0, CCLKCFG}, /* 199, 287, 99, 99 */
|
|
|
|
+ {398100, 99500, 0x241, 0, CCLKCFG}, /* 199, 398, 99, 99 */
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+#define NUM_PXA25x_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs)
|
|
|
|
+#define NUM_PXA25x_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs)
|
|
|
|
+
|
|
|
|
+static struct cpufreq_frequency_table
|
|
|
|
+ pxa255_run_freq_table[NUM_PXA25x_RUN_FREQS+1];
|
|
|
|
+static struct cpufreq_frequency_table
|
|
|
|
+ pxa255_turbo_freq_table[NUM_PXA25x_TURBO_FREQS+1];
|
|
|
|
+
|
|
|
|
+/*
|
|
|
|
+ * PXA270 definitions
|
|
|
|
+ *
|
|
|
|
+ * For the PXA27x:
|
|
|
|
+ * Control variables are A, L, 2N for CCCR; B, HT, T for CLKCFG.
|
|
|
|
+ *
|
|
|
|
+ * A = 0 => memory controller clock from table 3-7,
|
|
|
|
+ * A = 1 => memory controller clock = system bus clock
|
|
|
|
+ * Run mode frequency = 13 MHz * L
|
|
|
|
+ * Turbo mode frequency = 13 MHz * L * N
|
|
|
|
+ * System bus frequency = 13 MHz * L / (B + 1)
|
|
|
|
+ *
|
|
|
|
+ * In CCCR:
|
|
|
|
+ * A = 1
|
|
|
|
+ * L = 16 oscillator to run mode ratio
|
|
|
|
+ * 2N = 6 2 * (turbo mode to run mode ratio)
|
|
|
|
+ *
|
|
|
|
+ * In CCLKCFG:
|
|
|
|
+ * B = 1 Fast bus mode
|
|
|
|
+ * HT = 0 Half-Turbo mode
|
|
|
|
+ * T = 1 Turbo mode
|
|
|
|
+ *
|
|
|
|
+ * For now, just support some of the combinations in table 3-7 of
|
|
|
|
+ * PXA27x Processor Family Developer's Manual to simplify frequency
|
|
|
|
+ * change sequences.
|
|
|
|
+ */
|
|
|
|
+#define PXA27x_CCCR(A, L, N2) (A << 25 | N2 << 7 | L)
|
|
|
|
+#define CCLKCFG2(B, HT, T) \
|
|
|
|
+ (CCLKCFG_FCS | \
|
|
|
|
+ ((B) ? CCLKCFG_FASTBUS : 0) | \
|
|
|
|
+ ((HT) ? CCLKCFG_HALFTURBO : 0) | \
|
|
|
|
+ ((T) ? CCLKCFG_TURBO : 0))
|
|
|
|
+
|
|
|
|
+static pxa_freqs_t pxa27x_freqs[] = {
|
|
|
|
+ {104000, 104000, PXA27x_CCCR(1, 8, 2), 0, CCLKCFG2(1, 0, 1)},
|
|
|
|
+ {156000, 104000, PXA27x_CCCR(1, 8, 6), 0, CCLKCFG2(1, 1, 1)},
|
|
|
|
+ {208000, 208000, PXA27x_CCCR(0, 16, 2), 1, CCLKCFG2(0, 0, 1)},
|
|
|
|
+ {312000, 208000, PXA27x_CCCR(1, 16, 3), 1, CCLKCFG2(1, 0, 1)},
|
|
|
|
+ {416000, 208000, PXA27x_CCCR(1, 16, 4), 1, CCLKCFG2(1, 0, 1)},
|
|
|
|
+ {520000, 208000, PXA27x_CCCR(1, 16, 5), 1, CCLKCFG2(1, 0, 1)},
|
|
|
|
+ {624000, 208000, PXA27x_CCCR(1, 16, 6), 1, CCLKCFG2(1, 0, 1)}
|
|
};
|
|
};
|
|
-#define NUM_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs)
|
|
|
|
|
|
|
|
-static struct cpufreq_frequency_table pxa255_turbo_freq_table[NUM_TURBO_FREQS+1];
|
|
|
|
|
|
+#define NUM_PXA27x_FREQS ARRAY_SIZE(pxa27x_freqs)
|
|
|
|
+static struct cpufreq_frequency_table
|
|
|
|
+ pxa27x_freq_table[NUM_PXA27x_FREQS+1];
|
|
|
|
|
|
extern unsigned get_clk_frequency_khz(int info);
|
|
extern unsigned get_clk_frequency_khz(int info);
|
|
|
|
|
|
|
|
+static void find_freq_tables(struct cpufreq_policy *policy,
|
|
|
|
+ struct cpufreq_frequency_table **freq_table,
|
|
|
|
+ pxa_freqs_t **pxa_freqs)
|
|
|
|
+{
|
|
|
|
+ if (cpu_is_pxa25x()) {
|
|
|
|
+ if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
|
|
|
|
+ *pxa_freqs = pxa255_run_freqs;
|
|
|
|
+ *freq_table = pxa255_run_freq_table;
|
|
|
|
+ } else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
|
|
|
|
+ *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()) {
|
|
|
|
+ *pxa_freqs = pxa27x_freqs;
|
|
|
|
+ *freq_table = pxa27x_freq_table;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void pxa27x_guess_max_freq(void)
|
|
|
|
+{
|
|
|
|
+ if (!pxa27x_maxfreq) {
|
|
|
|
+ pxa27x_maxfreq = 416000;
|
|
|
|
+ printk(KERN_INFO "PXA CPU 27x max frequency not defined "
|
|
|
|
+ "(pxa27x_maxfreq), assuming pxa271 with %dkHz maxfreq\n",
|
|
|
|
+ pxa27x_maxfreq);
|
|
|
|
+ } else {
|
|
|
|
+ pxa27x_maxfreq *= 1000;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static u32 mdrefr_dri(unsigned int freq)
|
|
|
|
+{
|
|
|
|
+ u32 dri = 0;
|
|
|
|
+
|
|
|
|
+ if (cpu_is_pxa25x())
|
|
|
|
+ dri = ((freq * SDRAM_TREF) / (SDRAM_ROWS * 32));
|
|
|
|
+ if (cpu_is_pxa27x())
|
|
|
|
+ dri = ((freq * SDRAM_TREF) / (SDRAM_ROWS - 31)) / 32;
|
|
|
|
+ return dri;
|
|
|
|
+}
|
|
|
|
+
|
|
/* find a valid frequency point */
|
|
/* find a valid frequency point */
|
|
static int pxa_verify_policy(struct cpufreq_policy *policy)
|
|
static int pxa_verify_policy(struct cpufreq_policy *policy)
|
|
{
|
|
{
|
|
struct cpufreq_frequency_table *pxa_freqs_table;
|
|
struct cpufreq_frequency_table *pxa_freqs_table;
|
|
|
|
+ pxa_freqs_t *pxa_freqs;
|
|
int ret;
|
|
int ret;
|
|
|
|
|
|
- if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
|
|
|
|
- pxa_freqs_table = pxa255_run_freq_table;
|
|
|
|
- } else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
|
|
|
|
- pxa_freqs_table = pxa255_turbo_freq_table;
|
|
|
|
- } else {
|
|
|
|
- printk("CPU PXA: Unknown policy found. "
|
|
|
|
- "Using CPUFREQ_POLICY_PERFORMANCE\n");
|
|
|
|
- pxa_freqs_table = pxa255_run_freq_table;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
|
|
+ find_freq_tables(policy, &pxa_freqs_table, &pxa_freqs);
|
|
ret = cpufreq_frequency_table_verify(policy, pxa_freqs_table);
|
|
ret = cpufreq_frequency_table_verify(policy, pxa_freqs_table);
|
|
|
|
|
|
if (freq_debug)
|
|
if (freq_debug)
|
|
pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n",
|
|
pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n",
|
|
- policy->min, policy->max);
|
|
|
|
|
|
+ policy->min, policy->max);
|
|
|
|
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
+static unsigned int pxa_cpufreq_get(unsigned int cpu)
|
|
|
|
+{
|
|
|
|
+ return get_clk_frequency_khz(0);
|
|
|
|
+}
|
|
|
|
+
|
|
static int pxa_set_target(struct cpufreq_policy *policy,
|
|
static int pxa_set_target(struct cpufreq_policy *policy,
|
|
- unsigned int target_freq,
|
|
|
|
- unsigned int relation)
|
|
|
|
|
|
+ unsigned int target_freq,
|
|
|
|
+ unsigned int relation)
|
|
{
|
|
{
|
|
struct cpufreq_frequency_table *pxa_freqs_table;
|
|
struct cpufreq_frequency_table *pxa_freqs_table;
|
|
pxa_freqs_t *pxa_freq_settings;
|
|
pxa_freqs_t *pxa_freq_settings;
|
|
struct cpufreq_freqs freqs;
|
|
struct cpufreq_freqs freqs;
|
|
unsigned int idx;
|
|
unsigned int idx;
|
|
unsigned long flags;
|
|
unsigned long flags;
|
|
- unsigned int unused, preset_mdrefr, postset_mdrefr;
|
|
|
|
- void *ramstart = phys_to_virt(0xa0000000);
|
|
|
|
|
|
+ unsigned int new_freq_cpu, new_freq_mem;
|
|
|
|
+ unsigned int unused, preset_mdrefr, postset_mdrefr, cclkcfg;
|
|
|
|
|
|
/* Get the current policy */
|
|
/* Get the current policy */
|
|
- if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
|
|
|
|
- pxa_freq_settings = pxa255_run_freqs;
|
|
|
|
- pxa_freqs_table = pxa255_run_freq_table;
|
|
|
|
- } else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
|
|
|
|
- pxa_freq_settings = pxa255_turbo_freqs;
|
|
|
|
- pxa_freqs_table = pxa255_turbo_freq_table;
|
|
|
|
- } else {
|
|
|
|
- printk("CPU PXA: Unknown policy found. "
|
|
|
|
- "Using CPUFREQ_POLICY_PERFORMANCE\n");
|
|
|
|
- pxa_freq_settings = pxa255_run_freqs;
|
|
|
|
- pxa_freqs_table = pxa255_run_freq_table;
|
|
|
|
- }
|
|
|
|
|
|
+ find_freq_tables(policy, &pxa_freqs_table, &pxa_freq_settings);
|
|
|
|
|
|
/* Lookup the next frequency */
|
|
/* Lookup the next frequency */
|
|
if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
|
|
if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
|
|
- target_freq, relation, &idx)) {
|
|
|
|
|
|
+ target_freq, relation, &idx)) {
|
|
return -EINVAL;
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
+ new_freq_cpu = pxa_freq_settings[idx].khz;
|
|
|
|
+ new_freq_mem = pxa_freq_settings[idx].membus;
|
|
freqs.old = policy->cur;
|
|
freqs.old = policy->cur;
|
|
- freqs.new = pxa_freq_settings[idx].khz;
|
|
|
|
|
|
+ freqs.new = new_freq_cpu;
|
|
freqs.cpu = policy->cpu;
|
|
freqs.cpu = policy->cpu;
|
|
|
|
|
|
if (freq_debug)
|
|
if (freq_debug)
|
|
- pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, (SDRAM %d Mhz)\n",
|
|
|
|
- freqs.new / 1000, (pxa_freq_settings[idx].div2) ?
|
|
|
|
- (pxa_freq_settings[idx].membus / 2000) :
|
|
|
|
- (pxa_freq_settings[idx].membus / 1000));
|
|
|
|
|
|
+ pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, "
|
|
|
|
+ "(SDRAM %d Mhz)\n",
|
|
|
|
+ freqs.new / 1000, (pxa_freq_settings[idx].div2) ?
|
|
|
|
+ (new_freq_mem / 2000) : (new_freq_mem / 1000));
|
|
|
|
|
|
/*
|
|
/*
|
|
* Tell everyone what we're about to do...
|
|
* Tell everyone what we're about to do...
|
|
@@ -177,16 +268,16 @@ static int pxa_set_target(struct cpufreq_policy *policy,
|
|
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
|
|
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
|
|
|
|
|
|
/* Calculate the next MDREFR. If we're slowing down the SDRAM clock
|
|
/* Calculate the next MDREFR. If we're slowing down the SDRAM clock
|
|
- * we need to preset the smaller DRI before the change. If we're speeding
|
|
|
|
- * up we need to set the larger DRI value after the change.
|
|
|
|
|
|
+ * we need to preset the smaller DRI before the change. If we're
|
|
|
|
+ * speeding up we need to set the larger DRI value after the change.
|
|
*/
|
|
*/
|
|
preset_mdrefr = postset_mdrefr = MDREFR;
|
|
preset_mdrefr = postset_mdrefr = MDREFR;
|
|
- if ((MDREFR & MDREFR_DRI_MASK) > MDREFR_DRI(pxa_freq_settings[idx].membus)) {
|
|
|
|
- preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK) |
|
|
|
|
- MDREFR_DRI(pxa_freq_settings[idx].membus);
|
|
|
|
|
|
+ if ((MDREFR & MDREFR_DRI_MASK) > mdrefr_dri(new_freq_mem)) {
|
|
|
|
+ preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK);
|
|
|
|
+ preset_mdrefr |= mdrefr_dri(new_freq_mem);
|
|
}
|
|
}
|
|
- postset_mdrefr = (postset_mdrefr & ~MDREFR_DRI_MASK) |
|
|
|
|
- MDREFR_DRI(pxa_freq_settings[idx].membus);
|
|
|
|
|
|
+ postset_mdrefr =
|
|
|
|
+ (postset_mdrefr & ~MDREFR_DRI_MASK) | mdrefr_dri(new_freq_mem);
|
|
|
|
|
|
/* If we're dividing the memory clock by two for the SDRAM clock, this
|
|
/* If we're dividing the memory clock by two for the SDRAM clock, this
|
|
* must be set prior to the change. Clearing the divide must be done
|
|
* must be set prior to the change. Clearing the divide must be done
|
|
@@ -201,26 +292,27 @@ static int pxa_set_target(struct cpufreq_policy *policy,
|
|
|
|
|
|
local_irq_save(flags);
|
|
local_irq_save(flags);
|
|
|
|
|
|
- /* Set new the CCCR */
|
|
|
|
|
|
+ /* Set new the CCCR and prepare CCLKCFG */
|
|
CCCR = pxa_freq_settings[idx].cccr;
|
|
CCCR = pxa_freq_settings[idx].cccr;
|
|
|
|
+ cclkcfg = pxa_freq_settings[idx].cclkcfg;
|
|
|
|
|
|
asm volatile(" \n\
|
|
asm volatile(" \n\
|
|
ldr r4, [%1] /* load MDREFR */ \n\
|
|
ldr r4, [%1] /* load MDREFR */ \n\
|
|
b 2f \n\
|
|
b 2f \n\
|
|
- .align 5 \n\
|
|
|
|
|
|
+ .align 5 \n\
|
|
1: \n\
|
|
1: \n\
|
|
- str %4, [%1] /* preset the MDREFR */ \n\
|
|
|
|
|
|
+ str %3, [%1] /* preset the MDREFR */ \n\
|
|
mcr p14, 0, %2, c6, c0, 0 /* set CCLKCFG[FCS] */ \n\
|
|
mcr p14, 0, %2, c6, c0, 0 /* set CCLKCFG[FCS] */ \n\
|
|
- str %5, [%1] /* postset the MDREFR */ \n\
|
|
|
|
|
|
+ str %4, [%1] /* postset the MDREFR */ \n\
|
|
\n\
|
|
\n\
|
|
b 3f \n\
|
|
b 3f \n\
|
|
2: b 1b \n\
|
|
2: b 1b \n\
|
|
3: nop \n\
|
|
3: nop \n\
|
|
"
|
|
"
|
|
- : "=&r" (unused)
|
|
|
|
- : "r" (&MDREFR), "r" (CCLKCFG_TURBO|CCLKCFG_FCS), "r" (ramstart),
|
|
|
|
- "r" (preset_mdrefr), "r" (postset_mdrefr)
|
|
|
|
- : "r4", "r5");
|
|
|
|
|
|
+ : "=&r" (unused)
|
|
|
|
+ : "r" (&MDREFR), "r" (cclkcfg),
|
|
|
|
+ "r" (preset_mdrefr), "r" (postset_mdrefr)
|
|
|
|
+ : "r4", "r5");
|
|
local_irq_restore(flags);
|
|
local_irq_restore(flags);
|
|
|
|
|
|
/*
|
|
/*
|
|
@@ -233,38 +325,57 @@ static int pxa_set_target(struct cpufreq_policy *policy,
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
-static unsigned int pxa_cpufreq_get(unsigned int cpu)
|
|
|
|
-{
|
|
|
|
- return get_clk_frequency_khz(0);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static int pxa_cpufreq_init(struct cpufreq_policy *policy)
|
|
|
|
|
|
+static __init int pxa_cpufreq_init(struct cpufreq_policy *policy)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
|
|
+ unsigned int freq;
|
|
|
|
+
|
|
|
|
+ /* try to guess pxa27x cpu */
|
|
|
|
+ if (cpu_is_pxa27x())
|
|
|
|
+ pxa27x_guess_max_freq();
|
|
|
|
|
|
/* set default policy and cpuinfo */
|
|
/* set default policy and cpuinfo */
|
|
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
|
|
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
|
|
- policy->policy = CPUFREQ_POLICY_PERFORMANCE;
|
|
|
|
- policy->cpuinfo.max_freq = PXA25x_MAX_FREQ;
|
|
|
|
- policy->cpuinfo.min_freq = PXA25x_MIN_FREQ;
|
|
|
|
|
|
+ if (cpu_is_pxa25x())
|
|
|
|
+ policy->policy = CPUFREQ_POLICY_PERFORMANCE;
|
|
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
|
|
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
|
|
- policy->cur = get_clk_frequency_khz(0); /* current freq */
|
|
|
|
|
|
+ policy->cur = get_clk_frequency_khz(0); /* current freq */
|
|
policy->min = policy->max = policy->cur;
|
|
policy->min = policy->max = policy->cur;
|
|
|
|
|
|
- /* Generate the run cpufreq_frequency_table struct */
|
|
|
|
- for (i = 0; i < NUM_RUN_FREQS; i++) {
|
|
|
|
|
|
+ /* Generate pxa25x the run cpufreq_frequency_table struct */
|
|
|
|
+ for (i = 0; i < NUM_PXA25x_RUN_FREQS; i++) {
|
|
pxa255_run_freq_table[i].frequency = pxa255_run_freqs[i].khz;
|
|
pxa255_run_freq_table[i].frequency = pxa255_run_freqs[i].khz;
|
|
pxa255_run_freq_table[i].index = i;
|
|
pxa255_run_freq_table[i].index = i;
|
|
}
|
|
}
|
|
-
|
|
|
|
pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
|
|
pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
|
|
- /* Generate the turbo cpufreq_frequency_table struct */
|
|
|
|
- for (i = 0; i < NUM_TURBO_FREQS; i++) {
|
|
|
|
- pxa255_turbo_freq_table[i].frequency = pxa255_turbo_freqs[i].khz;
|
|
|
|
|
|
+
|
|
|
|
+ /* Generate pxa25x the turbo cpufreq_frequency_table struct */
|
|
|
|
+ for (i = 0; i < NUM_PXA25x_TURBO_FREQS; i++) {
|
|
|
|
+ pxa255_turbo_freq_table[i].frequency =
|
|
|
|
+ pxa255_turbo_freqs[i].khz;
|
|
pxa255_turbo_freq_table[i].index = i;
|
|
pxa255_turbo_freq_table[i].index = i;
|
|
}
|
|
}
|
|
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
|
|
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
|
|
|
|
|
|
|
|
+ /* Generate the pxa27x cpufreq_frequency_table struct */
|
|
|
|
+ for (i = 0; i < NUM_PXA27x_FREQS; i++) {
|
|
|
|
+ freq = pxa27x_freqs[i].khz;
|
|
|
|
+ if (freq > pxa27x_maxfreq)
|
|
|
|
+ break;
|
|
|
|
+ pxa27x_freq_table[i].frequency = freq;
|
|
|
|
+ pxa27x_freq_table[i].index = i;
|
|
|
|
+ }
|
|
|
|
+ pxa27x_freq_table[i].frequency = CPUFREQ_TABLE_END;
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ * 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);
|
|
|
|
+ else if (cpu_is_pxa27x())
|
|
|
|
+ cpufreq_frequency_table_cpuinfo(policy, pxa27x_freq_table);
|
|
|
|
+
|
|
printk(KERN_INFO "PXA CPU frequency change support initialized\n");
|
|
printk(KERN_INFO "PXA CPU frequency change support initialized\n");
|
|
|
|
|
|
return 0;
|
|
return 0;
|
|
@@ -275,26 +386,25 @@ static struct cpufreq_driver pxa_cpufreq_driver = {
|
|
.target = pxa_set_target,
|
|
.target = pxa_set_target,
|
|
.init = pxa_cpufreq_init,
|
|
.init = pxa_cpufreq_init,
|
|
.get = pxa_cpufreq_get,
|
|
.get = pxa_cpufreq_get,
|
|
- .name = "PXA25x",
|
|
|
|
|
|
+ .name = "PXA2xx",
|
|
};
|
|
};
|
|
|
|
|
|
static int __init pxa_cpu_init(void)
|
|
static int __init pxa_cpu_init(void)
|
|
{
|
|
{
|
|
int ret = -ENODEV;
|
|
int ret = -ENODEV;
|
|
- if (cpu_is_pxa25x())
|
|
|
|
|
|
+ if (cpu_is_pxa25x() || cpu_is_pxa27x())
|
|
ret = cpufreq_register_driver(&pxa_cpufreq_driver);
|
|
ret = cpufreq_register_driver(&pxa_cpufreq_driver);
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
static void __exit pxa_cpu_exit(void)
|
|
static void __exit pxa_cpu_exit(void)
|
|
{
|
|
{
|
|
- if (cpu_is_pxa25x())
|
|
|
|
- cpufreq_unregister_driver(&pxa_cpufreq_driver);
|
|
|
|
|
|
+ cpufreq_unregister_driver(&pxa_cpufreq_driver);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
-MODULE_AUTHOR ("Intrinsyc Software Inc.");
|
|
|
|
-MODULE_DESCRIPTION ("CPU frequency changing driver for the PXA architecture");
|
|
|
|
|
|
+MODULE_AUTHOR("Intrinsyc Software Inc.");
|
|
|
|
+MODULE_DESCRIPTION("CPU frequency changing driver for the PXA architecture");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_LICENSE("GPL");
|
|
module_init(pxa_cpu_init);
|
|
module_init(pxa_cpu_init);
|
|
module_exit(pxa_cpu_exit);
|
|
module_exit(pxa_cpu_exit);
|