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