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Diffstat (limited to 'include/linux/qpnp/pin.h')
| -rw-r--r-- | include/linux/qpnp/pin.h | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/include/linux/qpnp/pin.h b/include/linux/qpnp/pin.h new file mode 100644 index 000000000000..7fb57aa7a778 --- /dev/null +++ b/include/linux/qpnp/pin.h @@ -0,0 +1,226 @@ +/* Copyright (c) 2012, 2015, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* Mode select */ +#define QPNP_PIN_MODE_DIG_IN 0 +#define QPNP_PIN_MODE_DIG_OUT 1 +#define QPNP_PIN_MODE_DIG_IN_OUT 2 +#define QPNP_PIN_MODE_ANA_PASS_THRU 3 +#define QPNP_PIN_MODE_BIDIR 3 +#define QPNP_PIN_MODE_AIN 4 +#define QPNP_PIN_MODE_AOUT 5 +#define QPNP_PIN_MODE_SINK 6 + +/* Invert source select (GPIO, MPP) */ +#define QPNP_PIN_INVERT_DISABLE 0 +#define QPNP_PIN_INVERT_ENABLE 1 + +/* Output type (GPIO) */ +#define QPNP_PIN_OUT_BUF_CMOS 0 +#define QPNP_PIN_OUT_BUF_OPEN_DRAIN_NMOS 1 +#define QPNP_PIN_OUT_BUF_OPEN_DRAIN_PMOS 2 +#define QPNP_PIN_OUT_BUF_NO_DRIVE 3 + +/* Voltage select (GPIO, MPP) */ +#define QPNP_PIN_VIN0 0 +#define QPNP_PIN_VIN1 1 +#define QPNP_PIN_VIN2 2 +#define QPNP_PIN_VIN3 3 +#define QPNP_PIN_VIN4 4 +#define QPNP_PIN_VIN5 5 +#define QPNP_PIN_VIN6 6 +#define QPNP_PIN_VIN7 7 + +/* Pull Up Values (GPIO) */ +#define QPNP_PIN_GPIO_PULL_UP_30 0 +#define QPNP_PIN_GPIO_PULL_UP_1P5 1 +#define QPNP_PIN_GPIO_PULL_UP_31P5 2 +#define QPNP_PIN_GPIO_PULL_UP_1P5_30 3 +#define QPNP_PIN_GPIO_PULL_DN 4 +#define QPNP_PIN_GPIO_PULL_NO 5 + +/* Pull Up Values (MPP) */ +#define QPNP_PIN_MPP_PULL_UP_0P6KOHM 0 +#define QPNP_PIN_MPP_PULL_UP_OPEN 1 +#define QPNP_PIN_MPP_PULL_UP_10KOHM 2 +#define QPNP_PIN_MPP_PULL_UP_30KOHM 3 + +/* Out Strength (GPIO) */ +#define QPNP_PIN_OUT_STRENGTH_LOW 1 +#define QPNP_PIN_OUT_STRENGTH_MED 2 +#define QPNP_PIN_OUT_STRENGTH_HIGH 3 + +/* Digital-in CTL (GPIO/MPP) */ +#define QPNP_PIN_DIG_IN_CTL_DTEST1 1 +#define QPNP_PIN_DIG_IN_CTL_DTEST2 2 +#define QPNP_PIN_DIG_IN_CTL_DTEST3 3 +#define QPNP_PIN_DIG_IN_CTL_DTEST4 4 + +/* Source Select (GPIO) / Enable Select (MPP) */ +#define QPNP_PIN_SEL_FUNC_CONSTANT 0 +#define QPNP_PIN_SEL_FUNC_PAIRED 1 +#define QPNP_PIN_SEL_FUNC_1 2 +#define QPNP_PIN_SEL_FUNC_2 3 +#define QPNP_PIN_SEL_DTEST1 4 +#define QPNP_PIN_SEL_DTEST2 5 +#define QPNP_PIN_SEL_DTEST3 6 +#define QPNP_PIN_SEL_DTEST4 7 + +/* Source Select for GPIO_LV/GPIO_MV only */ +#define QPNP_PIN_LV_MV_SEL_FUNC_CONSTANT 0 +#define QPNP_PIN_LV_MV_SEL_FUNC_PAIRED 1 +#define QPNP_PIN_LV_MV_SEL_FUNC_1 2 +#define QPNP_PIN_LV_MV_SEL_FUNC_2 3 +#define QPNP_PIN_LV_MV_SEL_FUNC_3 4 +#define QPNP_PIN_LV_MV_SEL_FUNC_4 5 +#define QPNP_PIN_LV_MV_SEL_DTEST1 6 +#define QPNP_PIN_LV_MV_SEL_DTEST2 7 +#define QPNP_PIN_LV_MV_SEL_DTEST3 8 +#define QPNP_PIN_LV_MV_SEL_DTEST4 9 + +/* Master enable (GPIO, MPP) */ +#define QPNP_PIN_MASTER_DISABLE 0 +#define QPNP_PIN_MASTER_ENABLE 1 + +/* Analog Output (MPP) */ +#define QPNP_PIN_AOUT_1V25 0 +#define QPNP_PIN_AOUT_0V625 1 +#define QPNP_PIN_AOUT_0V3125 2 +#define QPNP_PIN_AOUT_MPP 3 +#define QPNP_PIN_AOUT_ABUS1 4 +#define QPNP_PIN_AOUT_ABUS2 5 +#define QPNP_PIN_AOUT_ABUS3 6 +#define QPNP_PIN_AOUT_ABUS4 7 + +/* Analog Input (MPP) */ +#define QPNP_PIN_AIN_AMUX_CH5 0 +#define QPNP_PIN_AIN_AMUX_CH6 1 +#define QPNP_PIN_AIN_AMUX_CH7 2 +#define QPNP_PIN_AIN_AMUX_CH8 3 +#define QPNP_PIN_AIN_AMUX_ABUS1 4 +#define QPNP_PIN_AIN_AMUX_ABUS2 5 +#define QPNP_PIN_AIN_AMUX_ABUS3 6 +#define QPNP_PIN_AIN_AMUX_ABUS4 7 + +/* Current Sink (MPP) */ +#define QPNP_PIN_CS_OUT_5MA 0 +#define QPNP_PIN_CS_OUT_10MA 1 +#define QPNP_PIN_CS_OUT_15MA 2 +#define QPNP_PIN_CS_OUT_20MA 3 +#define QPNP_PIN_CS_OUT_25MA 4 +#define QPNP_PIN_CS_OUT_30MA 5 +#define QPNP_PIN_CS_OUT_35MA 6 +#define QPNP_PIN_CS_OUT_40MA 7 + +/* ANALOG PASS SEL (GPIO LV/MV) */ +#define QPNP_PIN_APASS_SEL_ATEST1 0 +#define QPNP_PIN_APASS_SEL_ATEST2 1 +#define QPNP_PIN_APASS_SEL_ATEST3 2 +#define QPNP_PIN_APASS_SEL_ATEST4 3 + +/** + * struct qpnp_pin_cfg - structure to specify pin configurtion values + * @mode: indicates whether the pin should be input, output, or + * both for gpios. mpp pins also support bidirectional, + * analog in, analog out and current sink. This value + * should be of type QPNP_PIN_MODE_*. + * @output_type: indicates pin should be configured as CMOS or open + * drain. Should be of the type QPNP_PIN_OUT_BUF_*. This + * setting applies for gpios only. + * @invert: Invert the signal of the line - + * QPNP_PIN_INVERT_DISABLE or QPNP_PIN_INVERT_ENABLE. + * @pull: This parameter should be programmed to different values + * depending on whether it's GPIO or MPP. + * For GPIO, it indicates whether a pull up or pull down + * should be applied. If a pullup is required the + * current strength needs to be specified. + * Current values of 30uA, 1.5uA, 31.5uA, 1.5uA with 30uA + * boost are supported. This value should be one of + * the QPNP_PIN_GPIO_PULL_*. Note that the hardware ignores + * this configuration if the GPIO is not set to input or + * output open-drain mode. + * For MPP, it indicates whether a pullup should be + * applied for bidirectitional mode only. The hardware + * ignores the configuration when operating in other modes. + * This value should be one of the QPNP_PIN_MPP_PULL_*. + * @vin_sel: specifies the voltage level when the output is set to 1. + * For an input gpio specifies the voltage level at which + * the input is interpreted as a logical 1. + * @out_strength: the amount of current supplied for an output gpio, + * should be of the type QPNP_PIN_STRENGTH_*. + * @src_sel: select alternate function for the pin. Certain pins + * can be paired (shorted) with each other. Some pins + * can act as alternate functions. In the context of + * gpio, this acts as a source select. For mpps, + * this is an enable select. + * This parameter should be of type QPNP_PIN_SEL_*. + * @master_en: QPNP_PIN_MASTER_ENABLE = Enable features within the + * pin block based on configurations. + * QPNP_PIN_MASTER_DISABLE = Completely disable the pin + * block and let the pin float with high impedance + * regardless of other settings. + * @aout_ref: Set the analog output reference. This parameter should + * be of type QPNP_PIN_AOUT_*. This parameter only applies + * to mpp pins. + * @ain_route: Set the source for analog input. This parameter + * should be of type QPNP_PIN_AIN_*. This parameter only + * applies to mpp pins. + * @cs_out: Set the the amount of current to sync in mA. This + * parameter should be of type QPNP_PIN_CS_OUT_*. This + * parameter only applies to mpp pins. + * @apass_sel: Set the ATEST line to which the signal is to be + * routed to. The parameter should be of type + * QPNP_PIN_APASS_SEL_*. This + * parameter only applies to GPIO LV/MV pins. + * @dtest_sel: Select the DTEST line to which the signal needs + * is routed to. The parameter should be of type + * QPNP_PIN_DIG_IN_CTL_*. The parameter applies + * to both gpio and mpp pins. + */ +struct qpnp_pin_cfg { + int mode; + int output_type; + int invert; + int pull; + int vin_sel; + int out_strength; + int src_sel; + int master_en; + int aout_ref; + int ain_route; + int cs_out; + int apass_sel; + int dtest_sel; +}; + +/** + * qpnp_pin_config - Apply pin configuration for Linux gpio + * @gpio: Linux gpio number to configure. + * @param: parameters to configure. + * + * This routine takes a Linux gpio number that corresponds with a + * PMIC pin and applies the configuration specified in 'param'. + * This gpio number can be ascertained by of_get_gpio_flags() or + * the qpnp_pin_map_gpio() API. + */ +int qpnp_pin_config(int gpio, struct qpnp_pin_cfg *param); + +/** + * qpnp_pin_map - Obtain Linux GPIO number from device spec + * @name: Name assigned by the 'label' binding for the primary node. + * @pmic_pin: PMIC pin number to lookup. + * + * This routine is used in legacy configurations that do not support + * Device Tree. If you are using Device Tree, you should not use this. + * For such cases, use of_get_gpio() or friends instead. + */ +int qpnp_pin_map(const char *name, uint32_t pmic_pin); |