| /* Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation, Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <stdio.h> |
| #include <qpnp_led.h> |
| #include <platform/iomap.h> |
| #include <pm8x41_wled.h> |
| |
| static void qpnp_led_config(struct qpnp_led_data *led) |
| { |
| pm8x41_wled_reg_write(RGB_LED_SRC_SEL(led->base), |
| RGB_LED_SOURCE_VPH_PWR); |
| pm8x41_wled_reg_write(LPG_PATTERN_CONFIG(led->lpg_base), 0x00); |
| pm8x41_wled_reg_write(LPG_PWM_SIZE_CLK(led->lpg_base), |
| PWM_6BIT_1KHZ_CLK); |
| pm8x41_wled_reg_write(LPG_PWM_FREQ_PREDIV_CLK(led->lpg_base), |
| PWM_FREQ); |
| pm8x41_wled_reg_write(LPG_PWM_TYPE_CONFIG(led->lpg_base), 0x00); |
| pm8x41_wled_reg_write(PWM_VALUE_LSB(led->lpg_base), 0x20); |
| pm8x41_wled_reg_write(PWM_VALUE_MSB(led->lpg_base), 0x00); |
| pm8x41_wled_reg_write(PWM_SYNC(led->lpg_base), 0x01); |
| pm8x41_wled_reg_write(LPG_ENABLE_CONTROL(led->lpg_base), |
| RGB_LED_ENABLE_PWM); |
| } |
| |
| static int qpnp_led_setup(struct qpnp_led_data *led) |
| { |
| uint8_t reg = 0; |
| |
| reg = pm8x41_wled_reg_read(RGB_LED_EN_CTL(led->base)); |
| |
| switch (led->color_sel) { |
| case QPNP_LED_RED: |
| reg |= RGB_LED_ENABLE_RED; |
| break; |
| case QPNP_LED_GREEN: |
| reg |= RGB_LED_ENABLE_GREEN; |
| break; |
| case QPNP_LED_BLUE: |
| reg |= RGB_LED_ENABLE_BLUE; |
| break; |
| default: |
| return -1; |
| }; |
| |
| pm8x41_wled_reg_write(RGB_LED_EN_CTL(led->base), reg); |
| |
| return 0; |
| } |
| |
| void qpnp_led_init(enum qpnp_led_op color, uint16_t led_base_addr, |
| uint16_t lpg_base_addr) |
| { |
| int rc; |
| struct qpnp_led_data led; |
| |
| led.base = led_base_addr; |
| led.lpg_base = lpg_base_addr; |
| led.color_sel = color; |
| |
| rc = qpnp_led_setup(&led); |
| if (rc) { |
| dprintf(INFO, "%s : failed\n", __func__); |
| return; |
| } |
| |
| qpnp_led_config(&led); |
| } |
| |