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rk3188: cpufreq: version 1.1, better get gpu perf freq

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黄涛
2013-02-01 14:53:18 +08:00
parent ee61ef2f65
commit 01d6584a85
1 changed files with 29 additions and 14 deletions
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43
arch/arm/mach-rk3188/cpufreq.c
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@@ -37,7 +37,7 @@
#include <mach/ddr.h>
#include <mach/dvfs.h>
#define VERSION "1.0"
#define VERSION "1.1"
#ifdef DEBUG
#define FREQ_DBG(fmt, args...) pr_debug(fmt, ## args)
@@ -74,7 +74,8 @@ static DEFINE_MUTEX(cpufreq_mutex);
static struct clk *gpu_clk;
static struct clk *ddr_clk;
#define GPU_MAX_RATE 350*1000*1000
#define GPU_PERF_RATE 401*1000*1000
static unsigned long gpu_perf_rate;
static int cpufreq_scale_rate_for_dvfs(struct clk *clk, unsigned long rate, dvfs_set_rate_callback set_rate);
@@ -112,11 +113,11 @@ static const struct cpufreq_frequency_table temp_limits[] = {
{.frequency = 1008 * 1000, .index = 75},
};
static const struct cpufreq_frequency_table temp_limits_high[] = {
static const struct cpufreq_frequency_table temp_limits_cpu_perf[] = {
{.frequency = 1008 * 1000, .index = 100},
};
static const struct cpufreq_frequency_table temp_limits_high2[] = {
static const struct cpufreq_frequency_table temp_limits_gpu_perf[] = {
{.frequency = 1008 * 1000, .index = 0},
};
@@ -130,7 +131,7 @@ static void rk3188_cpufreq_temp_limit_work_func(struct work_struct *work)
{
struct cpufreq_policy *policy;
int temp, i;
unsigned int new = -1;
unsigned int new_freq = -1;
unsigned long delay = HZ;
const struct cpufreq_frequency_table *limits_table = temp_limits;
size_t limits_size = ARRAY_SIZE(temp_limits);
@@ -140,23 +141,25 @@ static void rk3188_cpufreq_temp_limit_work_func(struct work_struct *work)
temp = rk3188_get_temp();
gpu_irqs[1] = kstat_irqs(IRQ_GPU_GP);
if (clk_get_rate(gpu_clk) > GPU_MAX_RATE) {
if (clk_get_rate(gpu_clk) >= gpu_perf_rate) {
delay = HZ / 20;
if ((gpu_irqs[1] - gpu_irqs[0]) < 3) {
limits_table = temp_limits_high;
limits_size = ARRAY_SIZE(temp_limits_high);
limits_table = temp_limits_cpu_perf;
limits_size = ARRAY_SIZE(temp_limits_cpu_perf);
} else {
limits_table = temp_limits_high2;
limits_size = ARRAY_SIZE(temp_limits_high2);
limits_table = temp_limits_gpu_perf;
limits_size = ARRAY_SIZE(temp_limits_gpu_perf);
}
}
for (i = 0; i < limits_size; i++) {
if (temp >= limits_table[i].index) {
new = limits_table[i].frequency;
new_freq = limits_table[i].frequency;
}
}
if (temp_limt_freq != new) {
temp_limt_freq = new;
if (temp_limt_freq != new_freq) {
temp_limt_freq = new_freq;
FREQ_DBG("temp_limit set rate %d kHz\n", temp_limt_freq);
policy = cpufreq_cpu_get(0);
cpufreq_driver_target(policy, policy->cur, CPUFREQ_RELATION_L | CPUFREQ_PRIVATE);
@@ -243,11 +246,23 @@ static int rk3188_cpufreq_verify(struct cpufreq_policy *policy)
static int rk3188_cpufreq_init_cpu0(struct cpufreq_policy *policy)
{
unsigned int i;
gpu_clk = clk_get(NULL, "gpu");
if (!IS_ERR(gpu_clk)) {
struct cpufreq_frequency_table *gpu_freq_table;
clk_enable_dvfs(gpu_clk);
if (cpu_is_rk3188())
dvfs_clk_enable_limit(gpu_clk, 133000000, 600000000);
gpu_freq_table = dvfs_get_freq_volt_table(gpu_clk);
for (i = 0; gpu_freq_table && gpu_freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
unsigned long rate = clk_round_rate(gpu_clk, gpu_freq_table[i].frequency * 1000);
if (gpu_perf_rate < rate) {
gpu_perf_rate = rate;
}
}
if (gpu_perf_rate < GPU_PERF_RATE)
gpu_perf_rate = GPU_PERF_RATE;
}
ddr_clk = clk_get(NULL, "ddr");
@@ -263,7 +278,7 @@ static int rk3188_cpufreq_init_cpu0(struct cpufreq_policy *policy)
if (freq_table == NULL) {
freq_table = default_freq_table;
} else {
int v = INT_MAX, i;
int v = INT_MAX;
for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
if (freq_table[i].index >= 1000000 && v > freq_table[i].index) {
suspend_freq = freq_table[i].frequency;