linux-imx
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committed c9eec908a1ex
id -= LP3944_LED4; reg = LP3944_REG_LS1; break; default: return -EINVAL; } if (status > LP3944_LED_STATUS_DIM1) return -EINVAL; /* invert only 0 and 1, leave unchanged the other values, * remember we are abusing status to set blink patterns /* * Invert status only when it's < 2 (i.e. 0 or 1) which means it's * controlling the on/off state directly. * When, instead, status is >= 2 don't invert it because it would mean * to mess with the hardware blinking mode. */ if (led->type == LP3944_LED_TYPE_LED_INVERTED && status < 2) status = 1 - status; mutex_lock(&data->lock); lp3944_reg_read(led->client, reg, &val); val &= ~(LP3944_LED_STATUS_MASK << (id << 1)); val |= (status << (id << 1));