/*
* Copyright 2012-15 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
/*
* Pre-requisites: headers required by header of this unit
*/
#include "dm_services.h"
#include "include/gpio_interface.h"
#include "include/gpio_service_interface.h"
#include "hw_gpio.h"
#include "hw_translate.h"
#include "hw_factory.h"
#include "gpio_service.h"
/*
* Post-requisites: headers required by this unit
*/
/*
* This unit
*/
/*
* @brief
* Public API
*/
enum gpio_result dal_gpio_open(
struct gpio *gpio,
enum gpio_mode mode)
{
return dal_gpio_open_ex(gpio, mode);
}
enum gpio_result dal_gpio_open_ex(
struct gpio *gpio,
enum gpio_mode mode)
{
if (gpio->pin) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_ALREADY_OPENED;
}
// No action if allocation failed during gpio construct
if (!gpio->hw_container.ddc) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_NON_SPECIFIC_ERROR;
}
gpio->mode = mode;
return dal_gpio_service_open(gpio);
}
enum gpio_result dal_gpio_get_value(
const struct gpio *gpio,
uint32_t *value)
{
if (!gpio->pin) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_NULL_HANDLE;
}
return gpio->pin->funcs->get_value(gpio->pin, value);
}
enum gpio_result dal_gpio_set_value(
const struct gpio *gpio,
uint32_t value)
{
if (!gpio->pin) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_NULL_HANDLE;
}
return gpio->pin->funcs->set_value(gpio->pin, value);
}
enum gpio_mode dal_gpio_get_mode(
const struct gpio *gpio)
{
return gpio->mode;
}
enum gpio_result dal_gpio_lock_pin(
struct gpio *gpio)
{
return dal_gpio_service_lock(gpio->service, gpio->id, gpio->en);
}
enum gpio_result dal_gpio_unlock_pin(
struct gpio *gpio)
{
return dal_gpio_service_unlock(gpio->service, gpio->id, gpio->en);
}
enum gpio_result dal_gpio_change_mode(
struct gpio *gpio,
enum gpio_mode mode)
{
if (!gpio->pin) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_NULL_HANDLE;
}
return gpio->pin->funcs->change_mode(gpio->pin, mode);
}
enum gpio_id dal_gpio_get_id(
const struct gpio *gpio)
{
return gpio->id;
}
uint32_t dal_gpio_get_enum(
const struct gpio *gpio)
{
return gpio->en;
}
enum gpio_result dal_gpio_set_config(
struct gpio *gpio,
const struct gpio_config_data *config_data)
{
if (!gpio->pin) {
BREAK_TO_DEBUGGER();
return GPIO_RESULT_NULL_HANDLE;
}
return gpio->pin->funcs->set_config(gpio->pin, config_data);
}
enum gpio_result dal_gpio_get_pin_info(
const struct gpio *gpio,
struct gpio_pin_info *pin_info)
{
return gpio->service->translate.funcs->id_to_offset(
gpio->id, gpio->en, pin_info) ?
GPIO_RESULT_OK : GPIO_RESULT_INVALID_DATA;
}
enum sync_source dal_gpio_get_sync_source(
const struct gpio *gpio)
{
switch (gpio->id) {
case GPIO_ID_GENERIC:
switch (gpio->en) {
case GPIO_GENERIC_A:
return SYNC_SOURCE_IO_GENERIC_A;
case GPIO_GENERIC_B:
return SYNC_SOURCE_IO_GENERIC_B;
case GPIO_GENERIC_C:
return SYNC_SOURCE_IO_GENERIC_C;
case GPIO_GENERIC_D:
return SYNC_SOURCE_IO_GENERIC_D;
case GPIO_GENERIC_E:
return SYNC_SOURCE_IO_GENERIC_E;
case GPIO_GENERIC_F:
return SYNC_SOURCE_IO_GENERIC_F;
default:
return SYNC_SOURCE_NONE;
}
break;
case GPIO_ID_SYNC:
switch (gpio->en) {
case GPIO_SYNC_HSYNC_A:
return SYNC_SOURCE_IO_HSYNC_A;
case GPIO_SYNC_VSYNC_A:
return SYNC_SOURCE_IO_VSYNC_A;
case GPIO_SYNC_HSYNC_B:
return SYNC_SOURCE_IO_HSYNC_B;
case GPIO_SYNC_VSYNC_B:
return SYNC_SOURCE_IO_VSYNC_B;
default:
return SYNC_SOURCE_NONE;
}
break;
case GPIO_ID_HPD:
switch (gpio->en) {
case GPIO_HPD_1:
return SYNC_SOURCE_IO_HPD1;
case GPIO_HPD_2:
return SYNC_SOURCE_IO_HPD2;
default:
return SYNC_SOURCE_NONE;
}
break;
case GPIO_ID_GSL:
switch (gpio->en) {
case GPIO_GSL_GENLOCK_CLOCK:
return SYNC_SOURCE_GSL_IO_GENLOCK_CLOCK;
case GPIO_GSL_GENLOCK_VSYNC:
return SYNC_SOURCE_GSL_IO_GENLOCK_VSYNC;
case GPIO_GSL_SWAPLOCK_A:
return SYNC_SOURCE_GSL_IO_SWAPLOCK_A;
case GPIO_GSL_SWAPLOCK_B:
return SYNC_SOURCE_GSL_IO_SWAPLOCK_B;
default:
return SYNC_SOURCE_NONE;
}
break;
default:
return SYNC_SOURCE_NONE;
}
}
enum gpio_pin_output_state dal_gpio_get_output_state(
const struct gpio *gpio)
{
return gpio->output_state;
}
struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio)
{
return gpio->hw_container.ddc;
}
struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio)
{
return gpio->hw_container.hpd;
}
struct hw_generic *dal_gpio_get_generic(struct gpio *gpio)
{
return gpio->hw_container.generic;
}
void dal_gpio_close(
struct gpio *gpio)
{
if (!gpio)
return;
dal_gpio_service_close(gpio->service, &gpio->pin);
gpio->mode = GPIO_MODE_UNKNOWN;
}
/*
* @brief
* Creation and destruction
*/
struct gpio *dal_gpio_create(
struct gpio_service *service,
enum gpio_id id,
uint32_t en,
enum gpio_pin_output_state output_state)
{
struct gpio *gpio = kzalloc(sizeof(struct gpio), GFP_KERNEL);
if (!gpio) {
ASSERT_CRITICAL(false);
return NULL;
}
gpio->service = service;
gpio->pin = NULL;
gpio->id = id;
gpio->en = en;
gpio->mode = GPIO_MODE_UNKNOWN;
gpio->output_state = output_state;
//initialize hw_container union based on id
switch (gpio->id) {
case GPIO_ID_DDC_DATA:
gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
break;
case GPIO_ID_DDC_CLOCK:
gpio->service->factory.funcs->init_ddc_data(&gpio->hw_container.ddc, service->ctx, id, en);
break;
case GPIO_ID_GENERIC:
gpio->service->factory.funcs->init_generic(&gpio->hw_container.generic, service->ctx, id, en);
break;
case GPIO_ID_HPD:
gpio->service->factory.funcs->init_hpd(&gpio->hw_container.hpd, service->ctx, id, en);
break;
// TODO: currently gpio for sync and gsl does not get created, might need it later
case GPIO_ID_SYNC:
break;
case GPIO_ID_GSL:
break;
default:
ASSERT_CRITICAL(false);
gpio->pin = NULL;
}
return gpio;
}
void dal_gpio_destroy(
struct gpio **gpio)
{
if (!gpio || !*gpio) {
ASSERT_CRITICAL(false);
return;
}
switch ((*gpio)->id) {
case GPIO_ID_DDC_DATA:
kfree((*gpio)->hw_container.ddc);
(*gpio)->hw_container.ddc = NULL;
break;
case GPIO_ID_DDC_CLOCK:
//TODO: might want to change it to init_ddc_clock
kfree((*gpio)->hw_container.ddc);
(*gpio)->hw_container.ddc = NULL;
break;
case GPIO_ID_GENERIC:
kfree((*gpio)->hw_container.generic);
(*gpio)->hw_container.generic = NULL;
break;
case GPIO_ID_HPD:
kfree((*gpio)->hw_container.hpd);
(*gpio)->hw_container.hpd = NULL;
break;
// TODO: currently gpio for sync and gsl does not get created, might need it later
case GPIO_ID_SYNC:
break;
case GPIO_ID_GSL:
break;
default:
break;
}
kfree(*gpio);
*gpio = NULL;
}
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