void s3c_config_wakeup_gpio(void)
{
unsigned char reg_buff = 0;
if (Get_MAX8698_PM_REG(ELDO5, ®_buff)) {
pr_info("%s: VMMC 3.0V (%d)\n", __func__, reg_buff);
if (!reg_buff)
Set_MAX8698_PM_REG(ELDO5, 1);
}
print_gpios();
}
/* function that keeps reading the gpios in a tight loop and prints detected changes */
static void enter_read_gpios_loop(int base, int count, int states[MAX_GPIO_COUNT], char filenames[][MAX_FILENAME_LENGTH])
{
int readcount = 0;
while (1)
{
readcount++;
/* keep polling the states of the gpios and print them if they change */
if (read_gpios(count, states, filenames))
{
printf("%i * %i gpios polled before change occurred\n", readcount, count);
readcount = 0;
print_gpios(base, count, states);
}
}
}
void s3c_config_sleep_gpio(void)
{
int spcon_val;
printk("s3c_config_sleep_gpio");
check_pmic();
s3c_config_gpio_table(ARRAY_SIZE(omnia_II_sleep_gpio_table),
omnia_II_sleep_gpio_table);
print_gpios();
spcon_val = __raw_readl(S3C64XX_SPCON);
spcon_val = spcon_val & (~0xFFEC0000);
__raw_writel(spcon_val, S3C64XX_SPCON);
__raw_writel(0x20, S3C64XX_SPCONSLP);
/* mem interface reg config in sleep mode */
__raw_writel(0x00005000, S3C64XX_MEM0CONSLP0);
__raw_writel(0x01041595, S3C64XX_MEM0CONSLP1);
__raw_writel(0x10055000, S3C64XX_MEM1CONSLP);
}
/* main entry point */
int main(int argc, char *argv[])
{
int ret;
/* init the default settings */
struct settings_t settings;
settings.gpio_base = 55;
settings.gpio_count = MAX_GPIO_COUNT;
settings.loop = 0;
settings.poll = 0;
settings.poll_timeout = -1;
print_info();
/* parse the cmdline arguments */
handle_parameters(argc, argv, &settings);
/* initialize the gpio file names */
init_gpio_filenames(settings.gpio_base, settings.gpio_count, settings.gpio_filenames);
/* read the gpios */
read_gpios(settings.gpio_count, settings.gpio_states, settings.gpio_filenames);
/* print the states of the gpios */
printf("initial values:\n");
print_gpios(settings.gpio_base, settings.gpio_count, settings.gpio_states);
printf("\n");
/* keep reading gpios cpu intensive in a tight loop */
if (settings.loop)
enter_read_gpios_loop(settings.gpio_base, settings.gpio_count, settings.gpio_states, settings.gpio_filenames);
/* poll the gpios once */
if (settings.poll)
{
init_gpio_edges(settings.gpio_base, settings.gpio_count, settings.gpio_edge_filenames);
if (read_edges(settings.gpio_count, settings.gpio_edge_values, settings.gpio_edge_filenames))
if (validate_edges(settings.gpio_base, settings.gpio_count, settings.gpio_edge_values))
enter_poll_gpios(settings.gpio_base, settings.gpio_count, settings.poll_timeout, settings.gpio_states, settings.gpio_filenames);
}
}
static void enter_poll_gpios(int base, int count, int timeout, int states[MAX_GPIO_COUNT], char filenames[][MAX_FILENAME_LENGTH])
{
int ret;
printf("waiting for interrupt on the gpios...\n");
ret = poll_gpios(count, filenames, timeout);
if (ret == -1)
printf("timeout occurred\n");
else if (ret == -2)
printf("error occurred\n");
else if (ret == -3)
printf("unknown reason");
else
{
printf("gpio %i changed\n", base + ret);
/* update and show the new gpio states */
read_gpios(count, states, filenames);
print_gpios(base, count, states);
}
}
