145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
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* Copyright 2012-15 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef __DAL_HW_GPIO_H__
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#define __DAL_HW_GPIO_H__
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#include "gpio_regs.h"
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#define FROM_HW_GPIO_PIN(ptr) \
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container_of((ptr), struct hw_gpio, base)
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struct addr_mask {
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uint32_t addr;
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uint32_t mask;
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};
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struct hw_gpio_pin {
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const struct hw_gpio_pin_funcs *funcs;
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enum gpio_id id;
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uint32_t en;
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enum gpio_mode mode;
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bool opened;
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struct dc_context *ctx;
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};
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struct hw_gpio_pin_funcs {
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void (*destroy)(
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struct hw_gpio_pin **ptr);
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bool (*open)(
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struct hw_gpio_pin *pin,
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enum gpio_mode mode);
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enum gpio_result (*get_value)(
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const struct hw_gpio_pin *pin,
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uint32_t *value);
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enum gpio_result (*set_value)(
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const struct hw_gpio_pin *pin,
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uint32_t value);
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enum gpio_result (*set_config)(
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struct hw_gpio_pin *pin,
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const struct gpio_config_data *config_data);
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enum gpio_result (*change_mode)(
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struct hw_gpio_pin *pin,
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enum gpio_mode mode);
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void (*close)(
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struct hw_gpio_pin *pin);
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};
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struct hw_gpio;
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/* Register indices are represented by member variables
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* and are to be filled in by constructors of derived classes.
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* These members permit the use of common code
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* for programming registers, where the sequence is the same
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* but register sets are different.
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* Some GPIOs have HW mux which allows to choose
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* what is the source of the signal in HW mode */
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struct hw_gpio_pin_reg {
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struct addr_mask DC_GPIO_DATA_MASK;
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struct addr_mask DC_GPIO_DATA_A;
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struct addr_mask DC_GPIO_DATA_EN;
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struct addr_mask DC_GPIO_DATA_Y;
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};
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struct hw_gpio_mux_reg {
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struct addr_mask GPIO_MUX_CONTROL;
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struct addr_mask GPIO_MUX_STEREO_SEL;
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};
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struct hw_gpio {
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struct hw_gpio_pin base;
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/* variables to save register value */
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struct {
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uint32_t mask;
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uint32_t a;
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uint32_t en;
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uint32_t mux;
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} store;
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/* GPIO MUX support */
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bool mux_supported;
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const struct gpio_registers *regs;
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};
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#define HW_GPIO_FROM_BASE(hw_gpio_pin) \
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container_of((hw_gpio_pin), struct hw_gpio, base)
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void dal_hw_gpio_construct(
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struct hw_gpio *pin,
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enum gpio_id id,
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uint32_t en,
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struct dc_context *ctx);
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bool dal_hw_gpio_open(
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struct hw_gpio_pin *pin,
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enum gpio_mode mode);
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enum gpio_result dal_hw_gpio_get_value(
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const struct hw_gpio_pin *pin,
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uint32_t *value);
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enum gpio_result dal_hw_gpio_config_mode(
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struct hw_gpio *pin,
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enum gpio_mode mode);
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void dal_hw_gpio_destruct(
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struct hw_gpio *pin);
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enum gpio_result dal_hw_gpio_set_value(
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const struct hw_gpio_pin *ptr,
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uint32_t value);
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enum gpio_result dal_hw_gpio_change_mode(
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struct hw_gpio_pin *ptr,
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enum gpio_mode mode);
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void dal_hw_gpio_close(
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struct hw_gpio_pin *ptr);
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#endif
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