d40605b6d0
[Why] Logic & structures for generic regs does not exist in DC currently. [How] Implement register masks/shifts and relevant functions for generic mux, similar to existing HPD and DDC objects. V2: fix includes for kalloc/free (Alex) Signed-off-by: Murton Liu <murton.liu@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Joshua Aberback <Joshua.Aberback@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
135 lines
3.3 KiB
C
135 lines
3.3 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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#include <linux/slab.h>
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#include "dm_services.h"
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#include "include/gpio_types.h"
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#include "hw_gpio.h"
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#include "hw_generic.h"
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#include "reg_helper.h"
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#include "generic_regs.h"
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#undef FN
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#define FN(reg_name, field_name) \
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generic->shifts->field_name, generic->masks->field_name
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#define CTX \
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generic->base.base.ctx
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#define REG(reg)\
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(generic->regs->reg)
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static void dal_hw_generic_construct(
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struct hw_generic *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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{
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dal_hw_gpio_construct(&pin->base, id, en, ctx);
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}
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static void dal_hw_generic_destruct(
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struct hw_generic *pin)
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{
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dal_hw_gpio_destruct(&pin->base);
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}
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static void destroy(
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struct hw_gpio_pin **ptr)
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{
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struct hw_generic *generic = HW_GENERIC_FROM_BASE(*ptr);
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dal_hw_generic_destruct(generic);
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kfree(generic);
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*ptr = NULL;
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}
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static enum gpio_result set_config(
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struct hw_gpio_pin *ptr,
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const struct gpio_config_data *config_data)
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{
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struct hw_generic *generic = HW_GENERIC_FROM_BASE(ptr);
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if (!config_data)
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return GPIO_RESULT_INVALID_DATA;
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REG_UPDATE_2(mux,
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GENERIC_EN, config_data->config.generic_mux.enable_output_from_mux,
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GENERIC_SEL, config_data->config.generic_mux.mux_select);
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return GPIO_RESULT_OK;
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}
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static const struct hw_gpio_pin_funcs funcs = {
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.destroy = destroy,
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.open = dal_hw_gpio_open,
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.get_value = dal_hw_gpio_get_value,
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.set_value = dal_hw_gpio_set_value,
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.set_config = set_config,
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.change_mode = dal_hw_gpio_change_mode,
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.close = dal_hw_gpio_close,
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};
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static void construct(
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struct hw_generic *generic,
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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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{
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dal_hw_generic_construct(generic, id, en, ctx);
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generic->base.base.funcs = &funcs;
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}
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struct hw_gpio_pin *dal_hw_generic_create(
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struct dc_context *ctx,
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enum gpio_id id,
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uint32_t en)
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{
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struct hw_generic *generic;
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if (id != GPIO_ID_GENERIC) {
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ASSERT_CRITICAL(false);
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return NULL;
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}
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if ((en < GPIO_GENERIC_MIN) || (en > GPIO_GENERIC_MAX)) {
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ASSERT_CRITICAL(false);
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return NULL;
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}
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generic = kzalloc(sizeof(struct hw_generic), GFP_KERNEL);
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if (!generic) {
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ASSERT_CRITICAL(false);
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return NULL;
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}
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construct(generic, id, en, ctx);
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return &generic->base.base;
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}
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