+#define CHECK_BRIGHTNESS(var, expr, array) \
+ do { \
+ (var) = (expr); \
+ if ((var) >= sizeof(array)/sizeof(array[0])) \
+ (var) = sizeof(array)/sizeof(array[0]) - 1; \
+ } while (0)
+
+void pwmled_set_brightness(uint16_t brightness)
+{
+ unsigned char i;
+
+ CHECK_BRIGHTNESS(i, brightness & 0x7, adc_targets_0);
+ adc_vals[0] = adc_targets_0[i];
+ CHECK_BRIGHTNESS(i, (brightness >> 3) & 0x7, adc_targets_0);
+ if (adc_vals[1] != adc_targets_0[i]) {
+ adc_vals[1] = adc_targets_0[i];
+ pwmleds[0].modes_not_yet_stable = MODE_STABILIZATION_TIME;
+ }
+ adc_vals[2] = adc_vals[1];
+
+ CHECK_BRIGHTNESS(i, (brightness >> 6) & 0x7, adc_targets_1);
+ // we use only one mode, so no modes_not_yet_stable handling here
+ adc_vals[3] = adc_targets_1[i];
+ adc_vals[4] = adc_vals[3];
+ adc_vals[5] = adc_vals[3];
+
+ CHECK_BRIGHTNESS(i, (brightness >> 9) & 0x7, adc_targets_2);
+ adc_vals[6] = adc_targets_2[i];
+ CHECK_BRIGHTNESS(i, (brightness >> 12) & 0x7, adc_targets_2);
+ if (adc_vals[7] != adc_targets_2[i]) {
+ adc_vals[7] = adc_targets_2[i];
+ pwmleds[2].modes_not_yet_stable = MODE_STABILIZATION_TIME;
+ }
+ adc_vals[8] = adc_vals[7];
+
+ for (i = 0; i < N_PWMLEDS; i++) {
+ pwmleds[i].err_sum = 0;
+ pwmled_set_mode(i, pwmleds[i].mode);
+ }
+}
+
+#define PWMLED_PROBE_STEADY_COUNT 10
+
+static inline unsigned char pwmled_probed_ok(unsigned char n, uint16_t old_pwm)
+{
+ pwmled_t *led = pwmleds + n;
+
+ if (led->pwm == old_pwm) {
+ if (led->probe_steady < PWMLED_PROBE_STEADY_COUNT)
+ led->probe_steady++;
+ } else {
+ led->probe_steady = 0;
+ }
+
+ if (led->probe_steady < PWMLED_PROBE_STEADY_COUNT
+ && old_pwm <= led->pwm)
+ return 0;
+
+ // probed OK
+ led->mode_pwm[led->mode - 1] = led->pwm;
+ led->err_sums[led->mode - 1] = 0;
+
+ // next mode to probe?
+ if (led->mode < N_PWMLED_MODES) {
+ led->probe_steady = 0;
+ led->err_sum = 0;
+
+ led->mode++;
+ led->target = adc_vals[n*N_PWMLED_MODES+led->mode-1];
+
+ return 0;
+ } else {
+ unsigned char i;
+
+ led->state = ST_OFF;
+ pwm_off(n);
+
+ log_byte(0xF0);
+ log_byte(n);
+ log_word(jiffies);
+
+ for (i = 0; i < N_PWMLED_MODES; i++)
+ log_word(led->mode_pwm[i]);
+
+ log_flush();
+
+ pattern_reload();
+
+ return 1;
+ }
+}
+
+static inline void pwmled_err(unsigned char n)
+{
+ pwmleds[n].state = ST_DISABLED;
+ pwm_off(n);
+
+ log_byte(0xF1);
+ log_byte(n);
+ log_word(jiffies);
+ log_flush();
+
+ switch (n) {
+ case 0: err_flags.err_pwmled0 = 1; break;
+ case 1: err_flags.err_pwmled1 = 1; break;
+ case 2: err_flags.err_pwmled2 = 1; break;
+ }
+}
+
+