static int ws_eink_sleep(struct ws_eink_fb_par *par)
{
int ret;
ret = ws_eink_send_cmd(par, WS_DEEP_SLEEP_MODE, NULL, 0);
if (ret)
return ret;
wait_until_idle(par);
return 0;
}
static int set_memory_pointer(struct ws_eink_fb_par *par, int x, int y)
{
int ret;
const u8 x_addr_counter[] = { (x >> 3) & 0xFF };
const u8 y_addr_counter[] = { y & 0xFF, (y >> 8) & 0xFF };
ret = ws_eink_send_cmd(par, WS_SET_RAM_X_ADDRESS_COUNTER,
x_addr_counter, sizeof(x_addr_counter));
if (ret)
return ret;
ret = ws_eink_send_cmd(par, WS_SET_RAM_Y_ADDRESS_COUNTER,
y_addr_counter, sizeof(y_addr_counter));
if (ret)
return ret;
wait_until_idle(par);
return 0;
}
static uint64_t do_measurement(void (*callback)(void *ptr), void *ptr)
{
uint64_t tsc, pc;
wait_until_idle();
set_alarm(opts.res_warm_time, 0);
callback(ptr);
set_alarm(opts.res_calc_time, 0);
tsc = msr_read(IA32_TIME_STAMP_COUNTER);
pc = msr_read(deepest_pc_state);
callback(ptr);
pc = msr_read(deepest_pc_state) - pc;
tsc = msr_read(IA32_TIME_STAMP_COUNTER) - tsc;
return pc * 100 / tsc;
}
static int display_frame(struct ws_eink_fb_par *par)
{
int ret;
const u8 data_display_update_control_2[] = { 0xC4 };
ret = ws_eink_send_cmd(par, WS_DISPLAY_UPDATE_CONTROL_2,
data_display_update_control_2,
sizeof(data_display_update_control_2));
if (ret)
return ret;
ret = ws_eink_send_cmd(par, WS_MASTER_ACTIVATION, NULL, 0);
if (ret)
return ret;
ret = ws_eink_send_cmd(par, WS_TERMINATE_FRAME_READ_WRITE, NULL, 0);
if (ret)
return ret;
wait_until_idle(par);
return 0;
}
