283 lines
11 KiB
C
283 lines
11 KiB
C
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/* Copyright (c) 2014-2015, 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 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 <bits.h>
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#include <debug.h>
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#include <reg.h>
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/* base addresses */
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#define QPNP_WLED_CTRL_BASE 0xd800
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#define QPNP_WLED_SINK_BASE 0xd900
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#define QPNP_WLED_IBB_BASE 0xdc00
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#define QPNP_WLED_LAB_BASE 0xde00
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/* ctrl registers */
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#define QPNP_WLED_EN_REG(b) (b + 0x46)
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#define QPNP_WLED_FDBK_OP_REG(b) (b + 0x48)
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#define QPNP_WLED_VREF_REG(b) (b + 0x49)
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#define QPNP_WLED_BOOST_DUTY_REG(b) (b + 0x4B)
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#define QPNP_WLED_SWITCH_FREQ_REG(b) (b + 0x4C)
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#define QPNP_WLED_OVP_REG(b) (b + 0x4D)
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#define QPNP_WLED_ILIM_REG(b) (b + 0x4E)
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#define QPNP_WLED_EN_MASK 0x7F
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#define QPNP_WLED_EN_SHIFT 7
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#define QPNP_WLED_FDBK_OP_MASK 0xF8
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#define QPNP_WLED_VREF_MASK 0xF0
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#define QPNP_WLED_VREF_STEP_MV 25
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#define QPNP_WLED_VREF_MIN_MV 300
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#define QPNP_WLED_VREF_MAX_MV 675
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#define QPNP_WLED_DFLT_VREF_MV 350
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#define QPNP_WLED_ILIM_MASK 0xF8
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#define QPNP_WLED_ILIM_MIN_MA 105
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#define QPNP_WLED_ILIM_MAX_MA 1980
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#define QPNP_WLED_ILIM_STEP_MA 280
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#define QPNP_WLED_DFLT_ILIM_MA 980
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#define QPNP_WLED_ILIM_OVERWRITE 0x80
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#define QPNP_WLED_BOOST_DUTY_MASK 0xFC
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#define QPNP_WLED_BOOST_DUTY_STEP_NS 52
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#define QPNP_WLED_BOOST_DUTY_MIN_NS 26
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#define QPNP_WLED_BOOST_DUTY_MAX_NS 156
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#define QPNP_WLED_DEF_BOOST_DUTY_NS 104
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#define QPNP_WLED_DFLT_HYB_THRES 625
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#define QPNP_WLED_SWITCH_FREQ_MASK 0xF0
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#define QPNP_WLED_SWITCH_FREQ_800_KHZ 800
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#define QPNP_WLED_SWITCH_FREQ_1600_KHZ 1600
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#define QPNP_WLED_OVP_MASK 0xFC
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#define QPNP_WLED_OVP_17800_MV 17800
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#define QPNP_WLED_OVP_19400_MV 19400
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#define QPNP_WLED_OVP_29500_MV 29500
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#define QPNP_WLED_OVP_31000_MV 31000
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/* sink registers */
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#define QPNP_WLED_CURR_SINK_REG(b) (b + 0x46)
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#define QPNP_WLED_SYNC_REG(b) (b + 0x47)
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#define QPNP_WLED_MOD_REG(b) (b + 0x4A)
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#define QPNP_WLED_HYB_THRES_REG(b) (b + 0x4B)
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#define QPNP_WLED_MOD_EN_REG(b, n) (b + 0x50 + (n * 0x10))
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#define QPNP_WLED_SYNC_DLY_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x01)
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#define QPNP_WLED_FS_CURR_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x02)
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#define QPNP_WLED_CABC_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x06)
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#define QPNP_WLED_BRIGHT_LSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x07)
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#define QPNP_WLED_BRIGHT_MSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x08)
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#define QPNP_WLED_MOD_FREQ_1200_KHZ 1200
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#define QPNP_WLED_MOD_FREQ_2400_KHZ 2400
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#define QPNP_WLED_MOD_FREQ_9600_KHZ 9600
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#define QPNP_WLED_MOD_FREQ_19200_KHZ 19200
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#define QPNP_WLED_MOD_FREQ_MASK 0x3F
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#define QPNP_WLED_MOD_FREQ_SHIFT 6
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#define QPNP_WLED_PHASE_STAG_MASK 0xDF
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#define QPNP_WLED_PHASE_STAG_SHIFT 5
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#define QPNP_WLED_DIM_RES_MASK 0xFD
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#define QPNP_WLED_DIM_RES_SHIFT 1
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#define QPNP_WLED_DIM_HYB_MASK 0xFB
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#define QPNP_WLED_DIM_HYB_SHIFT 2
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#define QPNP_WLED_DIM_ANA_MASK 0xFE
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#define QPNP_WLED_HYB_THRES_MASK 0xF8
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#define QPNP_WLED_HYB_THRES_MIN 78
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#define QPNP_WLED_DEF_HYB_THRES 625
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#define QPNP_WLED_HYB_THRES_MAX 10000
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#define QPNP_WLED_MOD_EN_MASK 0x7F
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#define QPNP_WLED_MOD_EN_SHFT 7
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#define QPNP_WLED_MOD_EN 1
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#define QPNP_WLED_SYNC_DLY_MASK 0xF8
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#define QPNP_WLED_SYNC_DLY_MIN_US 0
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#define QPNP_WLED_SYNC_DLY_MAX_US 1400
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#define QPNP_WLED_SYNC_DLY_STEP_US 200
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#define QPNP_WLED_DEF_SYNC_DLY_US 400
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#define QPNP_WLED_FS_CURR_MASK 0xF0
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#define QPNP_WLED_FS_CURR_MIN_UA 0
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#define QPNP_WLED_FS_CURR_MAX_UA 30000
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#define QPNP_WLED_FS_CURR_STEP_UA 2500
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#define QPNP_WLED_CABC_MASK 0x7F
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#define QPNP_WLED_CABC_SHIFT 7
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#define QPNP_WLED_CURR_SINK_SHIFT 4
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#define QPNP_WLED_BRIGHT_LSB_MASK 0xFF
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#define QPNP_WLED_BRIGHT_MSB_SHIFT 8
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#define QPNP_WLED_BRIGHT_MSB_MASK 0x0F
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#define QPNP_WLED_SYNC 0x0F
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#define QPNP_WLED_SYNC_RESET 0x00
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#define QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE 0x0B
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#define QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE 0x05
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#define QPNP_WLED_DISP_SEL_REG(b) (b + 0x44)
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#define QPNP_WLED_MODULE_RDY_REG(b) (b + 0x45)
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#define QPNP_WLED_MODULE_EN_REG(b) (b + 0x46)
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#define QPNP_WLED_MODULE_RDY_MASK 0x7F
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#define QPNP_WLED_MODULE_RDY_SHIFT 7
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#define QPNP_WLED_MODULE_EN_MASK 0x7F
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#define QPNP_WLED_MODULE_EN_SHIFT 7
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#define QPNP_WLED_DISP_SEL_MASK 0x7F
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#define QPNP_WLED_DISP_SEL_SHIFT 7
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#define QPNP_WLED_IBB_BIAS_REG(b) (b + 0x58)
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#define QPNP_WLED_IBB_BIAS_MASK 0x7F
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#define QPNP_WLED_IBB_BIAS_SHIFT 7
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#define QPNP_WLED_IBB_PWRUP_DLY_MASK 0xCF
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#define QPNP_WLED_IBB_PWRUP_DLY_SHIFT 4
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#define QPNP_WLED_IBB_PWRUP_DLY_MIN_MS 0
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#define QPNP_WLED_IBB_PWRUP_DLY_MAX_MS 3
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#define QPNP_WLED_IBB_PWRDN_DLY_MIN_MS 0
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#define QPNP_WLED_IBB_PWRDN_DLY_MAX_MS 3
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#define IBB_LAB_VREG_STEP_SIZE 100000
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#define QPNP_LABIBB_OUTPUT_VOLTAGE 0x41
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#define QPNP_LAB_OUTPUT_OVERRIDE_EN BIT(7)
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#define QPNP_LAB_SET_VOLTAGE_MASK (BIT(4) - 1)
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#define QPNP_IBB_SET_VOLTAGE_MASK (BIT(6) - 1)
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#define QPNP_WLED_LAB_IBB_RDY_REG(b) (b + 0x49)
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#define QPNP_WLED_LAB_FAST_PC_REG(b) (b + 0x5E)
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#define QPNP_WLED_LAB_FAST_PC_MASK 0xFB
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#define QPNP_WLED_LAB_START_DLY_US 8
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#define QPNP_WLED_LAB_FAST_PC_SHIFT 2
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#define QPNP_WLED_SEC_ACCESS_REG(b) (b + 0xD0)
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#define QPNP_WLED_SEC_UNLOCK 0xA5
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#define QPNP_WLED_MAX_STRINGS 4
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#define WLED_MAX_LEVEL_511 511
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#define WLED_MAX_LEVEL_4095 4095
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#define QPNP_WLED_RAMP_DLY_MS 20
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#define QPNP_WLED_TRIGGER_NONE "none"
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#define QPNP_WLED_STR_SIZE 20
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#define QPNP_WLED_MIN_MSLEEP 20
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#define QPNP_WLED_MAX_BR_LEVEL 1638
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#define PWRDN_DLY2_MASK 0x3
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/* output feedback mode */
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enum qpnp_wled_fdbk_op {
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QPNP_WLED_FDBK_AUTO,
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QPNP_WLED_FDBK_WLED1,
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QPNP_WLED_FDBK_WLED2,
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QPNP_WLED_FDBK_WLED3,
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QPNP_WLED_FDBK_WLED4,
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};
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/* dimming modes */
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enum qpnp_wled_dim_mode {
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QPNP_WLED_DIM_ANALOG,
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QPNP_WLED_DIM_DIGITAL,
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QPNP_WLED_DIM_HYBRID,
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};
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/* dimming curve shapes */
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enum qpnp_wled_dim_shape {
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QPNP_WLED_DIM_SHAPE_LOG,
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QPNP_WLED_DIM_SHAPE_LINEAR,
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QPNP_WLED_DIM_SHAPE_SQUARE,
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};
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/**
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* qpnp_wled - wed data structure
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* @ fdbk_op - output feedback mode
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* @ dim_mode - dimming mode
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* @ dim_shape - dimming curve shape
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* @ ctrl_base - base address for wled ctrl
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* @ sink_base - base address for wled sink
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* @ ibb_base - base address for IBB(Inverting Buck Boost)
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* @ lab_base - base address for LAB(LCD/AMOLED Boost)
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* @ mod_freq_khz - modulator frequency in KHZ
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* @ hyb_thres - threshold for hybrid dimming
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* @ sync_dly_us - sync delay in us
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* @ vref_mv - ref voltage in mv
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* @ switch_freq_khz - switching frequency in KHZ
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* @ ovp_mv - over voltage protection in mv
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* @ ilim_ma - current limiter in ma
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* @ boost_duty_ns - boost duty cycle in ns
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* @ fs_curr_ua - full scale current in ua
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* @ ramp_ms - delay between ramp steps in ms
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* @ ramp_step - ramp step size
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* @ strings - supported list of strings
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* @ num_strings - number of strings
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* @ en_9b_dim_res - enable or disable 9bit dimming
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* @ en_phase_stag - enable or disable phase staggering
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* @ en_cabc - enable or disable cabc
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* @ disp_type_amoled - type of display: LCD/AMOLED
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* @ ibb_bias_active - activate display bias
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* @ lab_fast_precharge - fast/slow precharge
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*/
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struct qpnp_wled {
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enum qpnp_wled_fdbk_op fdbk_op;
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enum qpnp_wled_dim_mode dim_mode;
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enum qpnp_wled_dim_shape dim_shape;
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uint16_t ctrl_base;
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uint16_t sink_base;
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uint16_t ibb_base;
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uint16_t lab_base;
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uint16_t mod_freq_khz;
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uint16_t hyb_thres;
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uint16_t sync_dly_us;
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uint16_t vref_mv;
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uint16_t switch_freq_khz;
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uint16_t ovp_mv;
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uint16_t ilim_ma;
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uint16_t boost_duty_ns;
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uint16_t fs_curr_ua;
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uint16_t ibb_pwrup_dly_ms;
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uint16_t ibb_pwrdn_dly_ms;
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uint16_t ibb_discharge_en;
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uint16_t ramp_ms;
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uint16_t ramp_step;
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uint8_t strings[QPNP_WLED_MAX_STRINGS];
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uint8_t num_strings;
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bool en_9b_dim_res;
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bool en_phase_stag;
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bool en_cabc;
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bool disp_type_amoled;
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bool ibb_bias_active;
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bool lab_fast_precharge;
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uint32_t lab_min_volt;
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uint32_t lab_max_volt;
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uint32_t ibb_min_volt;
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uint32_t ibb_max_volt;
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uint32_t ibb_init_volt;
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uint32_t lab_init_volt;
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};
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struct qpnp_wled_config_data {
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bool display_type;
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char pwr_up_delay;
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char pwr_down_delay;
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char ibb_discharge_en;
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uint32_t lab_min_volt;
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uint32_t lab_max_volt;
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uint32_t ibb_min_volt;
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uint32_t ibb_max_volt;
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uint32_t ibb_init_volt;
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uint32_t lab_init_volt;
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};
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/* WLED Initial Setup */
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int qpnp_wled_init(struct qpnp_wled_config_data *config);
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/* Enable IBB */
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int qpnp_ibb_enable(bool state);
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void qpnp_wled_enable_backlight(int enable);
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