191 lines
6.7 KiB
C
191 lines
6.7 KiB
C
/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/* Mode select */
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#define QPNP_PIN_MODE_DIG_IN 0
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#define QPNP_PIN_MODE_DIG_OUT 1
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#define QPNP_PIN_MODE_DIG_IN_OUT 2
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#define QPNP_PIN_MODE_BIDIR 3
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#define QPNP_PIN_MODE_AIN 4
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#define QPNP_PIN_MODE_AOUT 5
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#define QPNP_PIN_MODE_SINK 6
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/* Invert source select (GPIO, MPP) */
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#define QPNP_PIN_INVERT_DISABLE 0
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#define QPNP_PIN_INVERT_ENABLE 1
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/* Output type (GPIO) */
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#define QPNP_PIN_OUT_BUF_CMOS 0
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#define QPNP_PIN_OUT_BUF_OPEN_DRAIN_NMOS 1
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#define QPNP_PIN_OUT_BUF_OPEN_DRAIN_PMOS 2
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/* Voltage select (GPIO, MPP) */
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#define QPNP_PIN_VIN0 0
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#define QPNP_PIN_VIN1 1
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#define QPNP_PIN_VIN2 2
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#define QPNP_PIN_VIN3 3
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#define QPNP_PIN_VIN4 4
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#define QPNP_PIN_VIN5 5
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#define QPNP_PIN_VIN6 6
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#define QPNP_PIN_VIN7 7
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/* Pull Up Values (GPIO) */
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#define QPNP_PIN_GPIO_PULL_UP_30 0
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#define QPNP_PIN_GPIO_PULL_UP_1P5 1
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#define QPNP_PIN_GPIO_PULL_UP_31P5 2
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#define QPNP_PIN_GPIO_PULL_UP_1P5_30 3
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#define QPNP_PIN_GPIO_PULL_DN 4
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#define QPNP_PIN_GPIO_PULL_NO 5
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/* Pull Up Values (MPP) */
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#define QPNP_PIN_MPP_PULL_UP_0P6KOHM 0
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#define QPNP_PIN_MPP_PULL_UP_OPEN 1
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#define QPNP_PIN_MPP_PULL_UP_10KOHM 2
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#define QPNP_PIN_MPP_PULL_UP_30KOHM 3
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/* Out Strength (GPIO) */
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#define QPNP_PIN_OUT_STRENGTH_LOW 1
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#define QPNP_PIN_OUT_STRENGTH_MED 2
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#define QPNP_PIN_OUT_STRENGTH_HIGH 3
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/* Source Select (GPIO) / Enable Select (MPP) */
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#define QPNP_PIN_SEL_FUNC_CONSTANT 0
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#define QPNP_PIN_SEL_FUNC_PAIRED 1
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#define QPNP_PIN_SEL_FUNC_1 2
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#define QPNP_PIN_SEL_FUNC_2 3
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#define QPNP_PIN_SEL_DTEST1 4
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#define QPNP_PIN_SEL_DTEST2 5
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#define QPNP_PIN_SEL_DTEST3 6
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#define QPNP_PIN_SEL_DTEST4 7
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/* Master enable (GPIO, MPP) */
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#define QPNP_PIN_MASTER_DISABLE 0
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#define QPNP_PIN_MASTER_ENABLE 1
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/* Analog Output (MPP) */
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#define QPNP_PIN_AOUT_1V25 0
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#define QPNP_PIN_AOUT_0V625 1
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#define QPNP_PIN_AOUT_0V3125 2
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#define QPNP_PIN_AOUT_MPP 3
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#define QPNP_PIN_AOUT_ABUS1 4
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#define QPNP_PIN_AOUT_ABUS2 5
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#define QPNP_PIN_AOUT_ABUS3 6
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#define QPNP_PIN_AOUT_ABUS4 7
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/* Analog Input (MPP) */
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#define QPNP_PIN_AIN_AMUX_CH5 0
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#define QPNP_PIN_AIN_AMUX_CH6 1
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#define QPNP_PIN_AIN_AMUX_CH7 2
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#define QPNP_PIN_AIN_AMUX_CH8 3
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#define QPNP_PIN_AIN_AMUX_ABUS1 4
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#define QPNP_PIN_AIN_AMUX_ABUS2 5
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#define QPNP_PIN_AIN_AMUX_ABUS3 6
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#define QPNP_PIN_AIN_AMUX_ABUS4 7
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/* Current Sink (MPP) */
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#define QPNP_PIN_CS_OUT_5MA 0
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#define QPNP_PIN_CS_OUT_10MA 1
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#define QPNP_PIN_CS_OUT_15MA 2
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#define QPNP_PIN_CS_OUT_20MA 3
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#define QPNP_PIN_CS_OUT_25MA 4
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#define QPNP_PIN_CS_OUT_30MA 5
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#define QPNP_PIN_CS_OUT_35MA 6
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#define QPNP_PIN_CS_OUT_40MA 7
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/**
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* struct qpnp_pin_cfg - structure to specify pin configurtion values
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* @mode: indicates whether the pin should be input, output, or
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* both for gpios. mpp pins also support bidirectional,
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* analog in, analog out and current sink. This value
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* should be of type QPNP_PIN_MODE_*.
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* @output_type: indicates pin should be configured as CMOS or open
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* drain. Should be of the type QPNP_PIN_OUT_BUF_*. This
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* setting applies for gpios only.
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* @invert: Invert the signal of the line -
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* QPNP_PIN_INVERT_DISABLE or QPNP_PIN_INVERT_ENABLE.
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* @pull: This parameter should be programmed to different values
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* depending on whether it's GPIO or MPP.
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* For GPIO, it indicates whether a pull up or pull down
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* should be applied. If a pullup is required the
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* current strength needs to be specified.
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* Current values of 30uA, 1.5uA, 31.5uA, 1.5uA with 30uA
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* boost are supported. This value should be one of
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* the QPNP_PIN_GPIO_PULL_*. Note that the hardware ignores
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* this configuration if the GPIO is not set to input or
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* output open-drain mode.
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* For MPP, it indicates whether a pullup should be
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* applied for bidirectitional mode only. The hardware
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* ignores the configuration when operating in other modes.
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* This value should be one of the QPNP_PIN_MPP_PULL_*.
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* @vin_sel: specifies the voltage level when the output is set to 1.
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* For an input gpio specifies the voltage level at which
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* the input is interpreted as a logical 1.
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* @out_strength: the amount of current supplied for an output gpio,
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* should be of the type QPNP_PIN_STRENGTH_*.
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* @src_sel: select alternate function for the pin. Certain pins
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* can be paired (shorted) with each other. Some pins
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* can act as alternate functions. In the context of
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* gpio, this acts as a source select. For mpps,
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* this is an enable select.
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* This parameter should be of type QPNP_PIN_SEL_*.
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* @master_en: QPNP_PIN_MASTER_ENABLE = Enable features within the
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* pin block based on configurations.
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* QPNP_PIN_MASTER_DISABLE = Completely disable the pin
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* block and let the pin float with high impedance
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* regardless of other settings.
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* @aout_ref: Set the analog output reference. This parameter should
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* be of type QPNP_PIN_AOUT_*. This parameter only applies
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* to mpp pins.
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* @ain_route: Set the source for analog input. This parameter
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* should be of type QPNP_PIN_AIN_*. This parameter only
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* applies to mpp pins.
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* @cs_out: Set the the amount of current to sync in mA. This
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* parameter should be of type QPNP_PIN_CS_OUT_*. This
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* parameter only applies to mpp pins.
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*/
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struct qpnp_pin_cfg {
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int mode;
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int output_type;
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int invert;
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int pull;
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int vin_sel;
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int out_strength;
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int src_sel;
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int master_en;
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int aout_ref;
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int ain_route;
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int cs_out;
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};
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/**
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* qpnp_pin_config - Apply pin configuration for Linux gpio
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* @gpio: Linux gpio number to configure.
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* @param: parameters to configure.
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*
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* This routine takes a Linux gpio number that corresponds with a
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* PMIC pin and applies the configuration specified in 'param'.
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* This gpio number can be ascertained by of_get_gpio_flags() or
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* the qpnp_pin_map_gpio() API.
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*/
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int qpnp_pin_config(int gpio, struct qpnp_pin_cfg *param);
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/**
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* qpnp_pin_map - Obtain Linux GPIO number from device spec
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* @name: Name assigned by the 'label' binding for the primary node.
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* @pmic_pin: PMIC pin number to lookup.
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*
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* This routine is used in legacy configurations that do not support
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* Device Tree. If you are using Device Tree, you should not use this.
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* For such cases, use of_get_gpio() or friends instead.
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*/
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int qpnp_pin_map(const char *name, uint32_t pmic_pin);
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