351 lines
9.9 KiB
C
351 lines
9.9 KiB
C
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/*
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* SiI8620 Linux Driver
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*
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* Copyright (C) 2013-2014 Silicon Image, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed AS-IS WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; INCLUDING without the implied warranty
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* of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE or NON-INFRINGEMENT.
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* See the GNU General Public License for more details at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*/
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#if (INCLUDE_RBP == 1)
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#include <linux/input.h>
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#include <linux/cdev.h>
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#include <linux/hrtimer.h>
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#include "si_fw_macros.h"
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#include "si_infoframe.h"
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#include "si_edid.h"
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#include "si_mhl_defs.h"
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#include "si_mhl2_edid_3d_api.h"
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#include "si_mhl_tx_hw_drv_api.h"
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#ifdef MEDIA_DATA_TUNNEL_SUPPORT
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#include "si_mdt_inputdev.h"
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#endif
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#include "mhl_linux_tx.h"
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#include "platform.h"
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#include "mhl_rbp_inputdev.h"
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enum rbp_state_e {
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ph0_idle,
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ph3_press_and_hold_button,
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ph8_hold_mode,
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num_rbp_states
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};
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static char *state_strings[num_rbp_states] = {
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"idle",
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"press_and_hold_button",
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"hold_mode"
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};
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enum rbp_event_e {
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rbp_normal_button_press,
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rbp_normal_button_press_same,
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rbp_normal_button_release,
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rbp_normal_button_release_same,
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rbp_press_and_hold_button_press,
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rbp_press_and_hold_button_press_same,
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rbp_press_and_hold_button_release,
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rbp_press_and_hold_button_release_same,
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rbp_T_hold_maintain_expired,
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rbp_T_press_mode_expired,
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num_rbp_events
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};
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static char *event_strings[num_rbp_events] = {
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"normal_button_press",
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"normal_button_press_same",
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"normal_button_release",
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"normal_button_release_same",
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"press_and_hold_button_press",
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"press_and_hold_button_press_same",
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"press_and_hold_button_release",
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"press_and_hold_button_release_same",
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"rbp_T_hold_maintain_expired",
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"rbp_T_press_mode_expired"
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};
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enum rbp_state_e current_rbp_state = ph0_idle;
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uint8_t rbp_previous_button = 0, rbp_current_button = 0;
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static int rbp_trigger_button_action(struct mhl_dev_context *dev_context,
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uint8_t index, bool press_release)
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{
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int status = -EINVAL;
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if (dev_context->rbp_input_dev) {
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input_report_key(dev_context->rbp_input_dev, index,
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press_release);
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input_sync(dev_context->rbp_input_dev);
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status = 0;
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}
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return status;
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}
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static int handle_rbp_event(struct mhl_dev_context *dev_context,
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uint8_t current_button, uint8_t prev_button, enum rbp_event_e event)
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{
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int status = 0;
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uint8_t current_index = current_button & MHL_RBP_BUTTON_ID_MASK;
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uint8_t prev_index = prev_button & MHL_RBP_BUTTON_ID_MASK;
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MHL_TX_DBG_ERR("received 0x%02x: %s(%d) in state: %s(%d)\n",
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current_button, event_strings[event], event,
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state_strings[current_rbp_state], current_rbp_state);
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/* now process the event according to the current state */
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switch (current_rbp_state) {
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case ph0_idle:
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switch (event) {
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case rbp_normal_button_press:
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case rbp_normal_button_press_same:
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 1);
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/* no update for current_rbp_state */
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break;
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case rbp_normal_button_release:
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case rbp_normal_button_release_same:
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 0);
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/* no update for current_rbp_state */
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break;
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case rbp_press_and_hold_button_press:
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case rbp_press_and_hold_button_press_same:
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_press_mode,
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T_PRESS_MODE);
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current_rbp_state = ph3_press_and_hold_button;
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break;
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case rbp_press_and_hold_button_release:
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case rbp_press_and_hold_button_release_same:
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MHL_TX_DBG_ERR("unexpected %s(%d) in state: %s(%d)\n",
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event_strings[event], event,
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state_strings[current_rbp_state],
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current_rbp_state);
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break;
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default:
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MHL_TX_DBG_ERR("unexpected event: %d in state: %d\n",
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event, current_rbp_state);
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/* no update for current_rbp_state */
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status = -EINVAL;
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}
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break;
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case ph3_press_and_hold_button:
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switch (event) {
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case rbp_normal_button_press:
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case rbp_normal_button_press_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_press_mode);
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rbp_trigger_button_action(dev_context, prev_index, 0);
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/* OK to overwrite status */
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 1);
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current_rbp_state = ph0_idle;
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break;
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case rbp_normal_button_release:
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case rbp_normal_button_release_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_press_mode);
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rbp_trigger_button_action(dev_context, prev_index, 0);
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rbp_trigger_button_action(dev_context, current_index,
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1);
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 0);
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current_rbp_state = ph0_idle;
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break;
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case rbp_press_and_hold_button_press:
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_press_mode,
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T_PRESS_MODE);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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1);
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/* no update for current_rbp_state */
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break;
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case rbp_press_and_hold_button_press_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_press_mode);
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_hold_maintain,
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T_HOLD_MAINTAIN);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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1);
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current_rbp_state = ph8_hold_mode;
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break;
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case rbp_press_and_hold_button_release:
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case rbp_press_and_hold_button_release_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_press_mode);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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0);
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current_rbp_state = ph0_idle;
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break;
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case rbp_T_press_mode_expired:
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_hold_maintain,
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T_HOLD_MAINTAIN);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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0);
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current_rbp_state = ph8_hold_mode;
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break;
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default:
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MHL_TX_DBG_ERR("unexpected event: %d in state: %d\n",
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event, current_rbp_state);
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/* no update for current_rbp_state */
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status = -EINVAL;
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}
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break;
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case ph8_hold_mode:
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switch (event) {
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case rbp_normal_button_press:
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case rbp_normal_button_press_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_hold_maintain);
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rbp_trigger_button_action(dev_context, prev_index, 0);
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 1);
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current_rbp_state = ph0_idle;
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break;
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case rbp_normal_button_release:
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case rbp_normal_button_release_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_hold_maintain);
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rbp_trigger_button_action(dev_context, prev_index, 0);
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rbp_trigger_button_action(dev_context, current_index,
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1);
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 0);
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current_rbp_state = ph0_idle;
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break;
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case rbp_press_and_hold_button_press:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_hold_maintain);
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_press_mode,
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T_PRESS_MODE);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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1);
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current_rbp_state = ph3_press_and_hold_button;
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break;
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case rbp_press_and_hold_button_press_same:
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mhl_tx_start_timer(dev_context,
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dev_context->timer_T_hold_maintain,
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T_HOLD_MAINTAIN);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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1);
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/* no update for current_rbp_state */
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break;
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case rbp_press_and_hold_button_release:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_hold_maintain);
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rbp_trigger_button_action(dev_context, prev_index, 0);
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rbp_trigger_button_action(dev_context, current_index,
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1);
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status =
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rbp_trigger_button_action(dev_context,
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current_index, 0);
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current_rbp_state = ph0_idle;
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break;
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case rbp_press_and_hold_button_release_same:
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mhl_tx_stop_timer(dev_context,
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dev_context->timer_T_hold_maintain);
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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0);
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current_rbp_state = ph0_idle;
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break;
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case rbp_T_hold_maintain_expired:
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status =
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rbp_trigger_button_action(dev_context, prev_index,
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0);
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current_rbp_state = ph0_idle;
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break;
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default:
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MHL_TX_DBG_ERR("unexpected event: %d in state: %d\n",
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event, current_rbp_state);
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/* no update for current_rbp_state */
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status = -EINVAL;
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}
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break;
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default:
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MHL_TX_DBG_ERR("irrational state value:%d\n",
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current_rbp_state);
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}
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return status;
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}
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int generate_rbp_input_event(struct mhl_dev_context *dev_context,
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uint8_t rbp_buttoncode)
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{
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/*
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Since, in MHL, bit 7 == 1 indicates button release,
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and, in Linux, zero means button release,
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we use XOR (^) to invert the sense.
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*/
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enum rbp_event_e event;
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int mhl_button_press;
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int status = -EINVAL;
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int index = rbp_buttoncode & MHL_RBP_BUTTON_ID_MASK;
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switch (index) {
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case RBP_CALL_ANSWER:
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case RBP_CALL_END:
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case RBP_CALL_TOGGLE:
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case RBP_CALL_MUTE:
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case RBP_CALL_DECLINE:
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case RBP_OCTOTHORPE:
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case RBP_ASTERISK:
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case RBP_ROTATE_CLKWISE:
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case RBP_ROTATE_COUNTERCLKWISE:
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case RBP_SCREEN_PAGE_NEXT:
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case RBP_SCREEN_PAGE_PREV:
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case RBP_SCREEN_PAGE_UP:
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case RBP_SCREEN_PAGE_DN:
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case RBP_SCREEN_PAGE_LEFT:
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case RBP_SCREEN_PAGE_RIGHT:
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break;
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default:
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return 1;
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}
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mhl_button_press =
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(rbp_buttoncode & MHL_RBP_BUTTON_RELEASED_MASK) ? 0 : 1;
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if (mhl_button_press) {
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if (index == rbp_previous_button)
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event = rbp_press_and_hold_button_press_same;
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else
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event = rbp_press_and_hold_button_press;
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} else {
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if (index == rbp_previous_button)
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event = rbp_press_and_hold_button_release_same;
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else
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event = rbp_press_and_hold_button_release;
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}
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status = handle_rbp_event(dev_context, rbp_buttoncode,
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rbp_current_button, event);
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rbp_previous_button = rbp_current_button;
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rbp_current_button = rbp_buttoncode;
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return status;
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}
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#endif
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