+++ /dev/null
-/* arch/arm/mach-rockchip/rk_pm_tests/pvtm_test.c
- *
- * Copyright (C) 2014 ROCKCHIP, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-#include <linux/regulator/consumer.h>
-#include <asm/cacheflush.h>
-
-#define PVTM_TEST 0
-
-extern int rockchip_tsadc_get_temp(int chn);
-extern void rk29_wdt_keepalive(void);
-extern u32 pvtm_get_value(u32 ch, u32 time_us);
-
-#if PVTM_TEST
-char *pvtm_buf;
-static const char pi_result[] = "3141592653589793238462643383279528841971693993751058209749445923078164062862089986280348253421170679821480865132823664709384469555822317253594081284811174502841270193852115559644622948954930381964428810975665933446128475648233786783165271201991456485669234634861045432664821339360726024914127372458706606315588174881520920962829254917153643678925903611330530548820466521384146951941511609433057273657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566438602139494639522473719070217986943702770539217176293176752384674818467669451320005681271452635608277857713427577896091736371787214684409012249534301465495853710579227968925892354201995611212902196864344181598136297747713099605187072113499999983729780499510597317328160963185";
-int calc_pi(void)
-{
- int bit = 0, i = 0;
- long a = 10000, b = 0, c = 2800, d = 0, e = 0, g = 0;
- int *result;
- long *f;
- int len = 0;
- char *pi_calc, *pi_tmp;
- char *pi_just = (char *)&pi_result[0];
- size_t pi_just_size = sizeof(pi_result);
-
- result = vmalloc(10000*sizeof(int));
- if (result == NULL)
- return -ENOMEM;
-
- f = vmalloc(2801*sizeof(long));
- if (f == NULL)
- return -ENOMEM;
-
- pi_calc = vmalloc(1000*sizeof(char));
- if (pi_calc == NULL)
- return -ENOMEM;
-
- for (; b-c; )
- f[b++] = a/5;
- for (; d = 0, g = c*2; c -= 14, result[bit++] = e+d/a, e = d%a)
- for (b = c; d += f[b]*a, f[b] = d%--g, d /= g--, --b; d *= b)
- ;
-
- pi_tmp = pi_calc;
- for (i = 0; i < bit; i++)
- len += sprintf(pi_tmp+len, "%d", result[i]);
-
- if (strncmp(pi_just, pi_calc, pi_just_size) == 0) {
- vfree(result);
- vfree(f);
- vfree(pi_calc);
- return 0;
- } else {
- vfree(result);
- vfree(f);
- vfree(pi_calc);
-
- while (1)
- pr_info("calc_pi error\n");
- }
-}
-
-void pvtm_repeat_test(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core;
- u32 pvtm, delta, old_pvtm;
- u32 min_pvtm = -1, max_pvtm = 0;
- u32 average = 0, sum = 0;
- int i, n;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_err("get regulator err\n");
- return;
- }
-
- clk_core = clk_get(NULL, "clk_core");
- if (IS_ERR_OR_NULL(clk_core)) {
- pr_err("get clk err\n");
- return;
- }
-
- n = 1000;
- for (i = 0; i < n; i++) {
- rk29_wdt_keepalive();
- pvtm = pvtm_get_value(0, 1000);
-
- sum += pvtm;
- if (!old_pvtm)
- old_pvtm = pvtm;
-
- if (pvtm > max_pvtm)
- max_pvtm = pvtm;
-
- if (pvtm < min_pvtm)
- min_pvtm = pvtm;
- }
-
- average = sum/n;
- delta = max_pvtm - min_pvtm;
- pr_info("rate %lu volt %d max %u min %u average %u delta %u\n",
- clk_get_rate(clk_core), regulator_get_voltage(regulator_arm),
- max_pvtm, min_pvtm, average, delta);
-}
-
-void pvtm_samp_interval_test(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core;
- u32 pvtm, old_pvtm = 0, samp_interval, times;
- int i, n;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_err("get regulator err\n");
- return;
- }
-
- clk_core = clk_get(NULL, "clk_core");
- if (IS_ERR_OR_NULL(clk_core)) {
- pr_err("get clk err\n");
- return;
- }
-
-
- n = 10;
- for (i = 0; i < n; i++) {
- rk29_wdt_keepalive();
- samp_interval = 10 * (1 << i);
- pvtm = pvtm_get_value(0, samp_interval);
-
- if (!old_pvtm)
- old_pvtm = pvtm;
-
- times = (1000*pvtm)/old_pvtm;
-
- old_pvtm = pvtm;
-
- pr_info("rate %lu volt %d samp_interval %d pvtm %d times %d\n",
- clk_get_rate(clk_core),
- regulator_get_voltage(regulator_arm),
- samp_interval, pvtm, times);
- }
-}
-
-void pvtm_temp_test(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core;
- int temp, old_temp = 0;
- int volt;
- u32 rate;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_err("get regulator err\n");
- return;
- }
-
- clk_core = clk_get(NULL, "clk_core");
- if (IS_ERR_OR_NULL(clk_core)) {
- pr_err("get clk err\n");
- return;
- }
-
- volt = 1100000;
- rate = 312000000;
- regulator_set_voltage(regulator_arm, volt, volt);
- clk_set_rate(clk_core, rate);
-
- do {
- rk29_wdt_keepalive();
- temp = rockchip_tsadc_get_temp(1);
- if (!old_temp)
- old_temp = temp;
-
- if (temp-old_temp >= 2)
- pr_info("rate %lu volt %d temp %d pvtm %u\n",
- clk_get_rate(clk_core),
- regulator_get_voltage(regulator_arm),
- temp, pvtm_get_value(0, 1000));
-
- old_temp = temp;
- } while (1);
-}
-
-
-#define ALL_DONE_FLAG 'a'
-#define ONE_DONE_FLAG 'o'
-#define ALL_BUF_SIZE (PAGE_SIZE << 8)
-#define ONE_BUF_SIZE PAGE_SIZE
-#define VOLT_STEP (12500) /*mv*/
-#define VOLT_START (1300000) /*mv*/
-#define VOLT_END (1000000) /*mv*/
-#define RATE_STEP (48000000) /*hz*/
-#define RATE_START (816000000) /*hz*/
-#define RATE_END (1200000000) /*hz*/
-
-void scale_min_pvtm_fix_volt(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core;
- unsigned long rate;
- u32 pvtm, old_pvtm = 0;
- int volt, i, ret = 0;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_info("get regulator err\n");
- return;
- }
-
- clk_core = clk_get(NULL, "clk_core");
- if (IS_ERR_OR_NULL(clk_core)) {
- pr_info("get clk err\n");
- return;
- }
-
- volt = VOLT_START;
- rate = RATE_START;
- do {
- for (i = 0; i < ALL_BUF_SIZE; i += ONE_BUF_SIZE) {
- if (pvtm_buf[i] == ALL_DONE_FLAG) {
- pr_info("=============test done!========\n");
- do {
- if (i) {
- i -= ONE_BUF_SIZE;
- pr_info("%s", pvtm_buf+i+1);
- } else {
- pr_info("no item!!!!\n");
- }
- } while (i);
-
- do {
- rk29_wdt_keepalive();
- msleep(1000);
- } while (1);
- }
- if (pvtm_buf[i] != ONE_DONE_FLAG)
- break;
- volt -= VOLT_STEP;
- }
-
- if (volt < VOLT_END) {
- pvtm_buf[i] = ALL_DONE_FLAG;
- continue;
- }
-
- pvtm_buf[i] = ONE_DONE_FLAG;
-
- ret = regulator_set_voltage(regulator_arm, volt, volt);
- if (ret) {
- pr_err("set volt(%d) err:%d\n", volt, ret);
-
- do {
- rk29_wdt_keepalive();
- msleep(1000);
- } while (1);
- }
-
- do {
- rk29_wdt_keepalive();
-
- flush_cache_all();
- outer_flush_all();
-
- clk_set_rate(clk_core, rate);
-
- calc_pi();
- /*fft_test();*/
- mdelay(500);
- rk29_wdt_keepalive();
-
- pvtm = pvtm_get_value(0, 1000);
- if (!old_pvtm)
- old_pvtm = pvtm;
- sprintf(pvtm_buf+i+1, "%d %lu %d %d %d\n",
- volt, clk_get_rate(clk_core), pvtm,
- rockchip_tsadc_get_temp(1), old_pvtm-pvtm);
-
- pr_info("%s", pvtm_buf+i+1);
-
- old_pvtm = pvtm;
- rate += RATE_STEP;
- } while (1);
- } while (1);
-}
-
-void scale_min_pvtm_fix_rate(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core;
- unsigned long rate;
- u32 pvtm, old_pvtm = 0;
- int volt, i, ret = 0;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_info("get regulator err\n");
- return;
- }
-
- clk_core = clk_get(NULL, "clk_core");
- if (IS_ERR_OR_NULL(clk_core)) {
- pr_info("get clk err\n");
- return;
- }
-
- volt = VOLT_START;
- rate = RATE_START;
- do {
- for (i = 0; i < ALL_BUF_SIZE; i += ONE_BUF_SIZE) {
- if (pvtm_buf[i] == ALL_DONE_FLAG) {
- pr_info("=============test done!========\n");
- do {
- if (i) {
- i -= ONE_BUF_SIZE;
- pr_info("%s", pvtm_buf+i+1);
- } else {
- pr_info("no item!!!!\n");
- }
- } while (i);
-
- do {
- rk29_wdt_keepalive();
- msleep(1000);
- } while (1);
- }
- if (pvtm_buf[i] != ONE_DONE_FLAG)
- break;
-
- rate += RATE_STEP;
- }
-
- if (rate > RATE_END) {
- pvtm_buf[i] = ALL_DONE_FLAG;
- continue;
- }
-
- pvtm_buf[i] = ONE_DONE_FLAG;
-
- ret = regulator_set_voltage(regulator_arm, volt, volt);
- if (ret) {
- pr_err("set volt(%d) err:%d\n", volt, ret);
-
- do {
- rk29_wdt_keepalive();
- msleep(1000);
- } while (1);
- }
-
- ret = clk_set_rate(clk_core, rate);
- do {
- rk29_wdt_keepalive();
-
- flush_cache_all();
- outer_flush_all();
- regulator_set_voltage(regulator_arm, volt, volt);
-
- calc_pi();
- mdelay(500);
- rk29_wdt_keepalive();
-
- pvtm = pvtm_get_value(0, 1000);
- if (!old_pvtm)
- old_pvtm = pvtm;
-
- sprintf(pvtm_buf+i+1, "%d %lu %d %d %d\n",
- volt, clk_get_rate(clk_core), pvtm,
- rockchip_tsadc_get_temp(1), old_pvtm-pvtm);
-
- pr_info("%s", pvtm_buf+i+1);
- old_pvtm = pvtm;
- volt -= VOLT_STEP;
- } while (1);
- } while (1);
-}
-
-#endif
-
-void scale_pvtm_fix_freq(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core_b, *clk_core_l;
- unsigned long rate;
- u32 pvtm, old_pvtm = 0;
- int volt, ret = 0;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_info("get regulator err\n");
- return;
- }
-
- clk_core_b = clk_get(NULL, "clk_core_b");
- if (IS_ERR_OR_NULL(clk_core_b)) {
- pr_info("get clk err\n");
- return;
- }
- clk_core_l = clk_get(NULL, "clk_core_l");
- if (IS_ERR_OR_NULL(clk_core_l)) {
- pr_info("get clk err\n");
- return;
- }
-
- volt = 1300000;
- rate = 216000000;
- ret = regulator_set_voltage(regulator_arm, volt, volt);
- if (ret)
- pr_err("set volt(%d) err:%d\n", volt, ret);
-
- do {
- clk_set_rate(clk_core_b, rate);
- clk_set_rate(clk_core_l, rate);
- mdelay(500);
- pvtm = pvtm_get_value(0, 1000);
- if (!old_pvtm)
- old_pvtm = pvtm;
- pr_info("%d %lu %d %d\n",
- volt, clk_get_rate(clk_core_b), pvtm, old_pvtm-pvtm);
-
- old_pvtm = pvtm;
- rate += 48000000;
- if (rate > 1200000000)
- break;
- } while (1);
-}
-
-void scale_pvtm_fix_volt(void)
-{
- struct regulator *regulator_arm;
- struct clk *clk_core_b, *clk_core_l;
- unsigned long rate;
- u32 pvtm, old_pvtm = 0;
- int volt, ret = 0;
-
- regulator_arm = regulator_get(NULL, "vdd_arm");
- if (IS_ERR_OR_NULL(regulator_arm)) {
- pr_info("get regulator err\n");
- return;
- }
-
- clk_core_b = clk_get(NULL, "clk_core_b");
- if (IS_ERR_OR_NULL(clk_core_b)) {
- pr_info("get clk err\n");
- return;
- }
-
- clk_core_l = clk_get(NULL, "clk_core_b");
- if (IS_ERR_OR_NULL(clk_core_l)) {
- pr_info("get clk err\n");
- return;
- }
-
- volt = 1300000;
- rate = 816000000;
-
- ret = regulator_set_voltage(regulator_arm, volt, volt);
- if (ret)
- pr_err("set volt(%d) err:%d\n", volt, ret);
-
- ret = clk_set_rate(clk_core_b, rate);
- ret = clk_set_rate(clk_core_l, rate);
- do {
- regulator_set_voltage(regulator_arm, volt, volt);
- mdelay(500);
- pvtm = pvtm_get_value(0, 1000);
- if (!old_pvtm)
- old_pvtm = pvtm;
-
- pr_info("%d %lu %d %d\n",
- volt, clk_get_rate(clk_core_b), pvtm, old_pvtm-pvtm);
- old_pvtm = pvtm;
- volt -= 12500;
- if (volt < 950000) {
- regulator_set_voltage(regulator_arm, 1300000, 1300000);
- break;
- }
- } while (1);
-}
-
-ssize_t pvtm_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- char *str = buf;
-
- str += sprintf(str, "core:%d\ngpu:%d\n",
- pvtm_get_value(0, 1000),
- pvtm_get_value(1, 1000));
- return (str - buf);
-}
-
-ssize_t pvtm_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
-{
- return n;
-}
-
-int pvtm_buf_init(void)
-{
-#if PVTM_TEST
- pvtm_buf = (char *)__get_free_pages(GFP_KERNEL, 8);
-
-#endif
- return 0;
-}
-fs_initcall(pvtm_buf_init);
projects / firefly-linux-kernel-4.4.55.git / blobdiff