78c45e9d5d
Decouple the configuration and parsing of aux switches with the parsing and configuration of HPD sources. HPD notification can come from either GPIO based approach or a PD module through a SW interface. The presence of AUX switch on the board should have no bearing in deciding which configuration for HPD detection is used. Update the implementation to allow for flexibility in selecting any combination of the HPD source and aux switches. Change-Id: I96d558f1d88a359d523fae6dc746045393884d5a Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org> Signed-off-by: Rajkumar Subbiah <quic_rsubbia@quicinc.com> Signed-off-by: Sandeep Gangadharaiah <quic_sandgang@quicinc.com>
124 行
2.4 KiB
C
124 行
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2021-2022, Qualcomm Innovation Center, Inc. All rights reserved.
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* Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
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*/
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include "dp_hpd.h"
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#include "dp_altmode.h"
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#include "dp_usbpd.h"
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#include "dp_gpio_hpd.h"
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#include "dp_lphw_hpd.h"
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#include "dp_debug.h"
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#include "dp_bridge_hpd.h"
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static void dp_hpd_host_init(struct dp_hpd *dp_hpd,
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struct dp_catalog_hpd *catalog)
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{
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if (!catalog) {
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DP_ERR("invalid input\n");
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return;
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}
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catalog->config_hpd(catalog, true);
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}
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static void dp_hpd_host_deinit(struct dp_hpd *dp_hpd,
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struct dp_catalog_hpd *catalog)
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{
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if (!catalog) {
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DP_ERR("invalid input\n");
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return;
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}
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catalog->config_hpd(catalog, false);
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}
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static void dp_hpd_isr(struct dp_hpd *dp_hpd)
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{
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}
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struct dp_hpd *dp_hpd_get(struct device *dev, struct dp_parser *parser,
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struct dp_catalog_hpd *catalog,
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struct dp_aux_bridge *aux_bridge,
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struct dp_hpd_cb *cb)
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{
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struct dp_hpd *dp_hpd = NULL;
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if (aux_bridge && (aux_bridge->flag & DP_AUX_BRIDGE_HPD)) {
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dp_hpd = dp_bridge_hpd_get(dev, cb, aux_bridge);
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if (!IS_ERR(dp_hpd)) {
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dp_hpd->type = DP_HPD_BRIDGE;
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goto config;
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}
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}
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dp_hpd = dp_lphw_hpd_get(dev, parser, catalog, cb);
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if (!IS_ERR_OR_NULL(dp_hpd)) {
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dp_hpd->type = DP_HPD_LPHW;
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goto config;
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}
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dp_hpd = dp_gpio_hpd_get(dev, cb);
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if (!IS_ERR_OR_NULL(dp_hpd)) {
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dp_hpd->type = DP_HPD_GPIO;
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goto config;
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}
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dp_hpd = dp_altmode_get(dev, cb);
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if (!IS_ERR_OR_NULL(dp_hpd)) {
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dp_hpd->type = DP_HPD_ALTMODE;
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goto config;
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}
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dp_hpd = dp_usbpd_get(dev, cb);
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if (!IS_ERR_OR_NULL(dp_hpd)) {
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dp_hpd->type = DP_HPD_USBPD;
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goto config;
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}
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DP_ERR("Failed to detect HPD type\n");
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goto end;
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config:
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if (!dp_hpd->host_init)
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dp_hpd->host_init = dp_hpd_host_init;
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if (!dp_hpd->host_deinit)
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dp_hpd->host_deinit = dp_hpd_host_deinit;
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if (!dp_hpd->isr)
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dp_hpd->isr = dp_hpd_isr;
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end:
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return dp_hpd;
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}
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void dp_hpd_put(struct dp_hpd *dp_hpd)
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{
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if (!dp_hpd)
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return;
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switch (dp_hpd->type) {
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case DP_HPD_USBPD:
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dp_usbpd_put(dp_hpd);
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break;
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case DP_HPD_ALTMODE:
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dp_altmode_put(dp_hpd);
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break;
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case DP_HPD_GPIO:
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dp_gpio_hpd_put(dp_hpd);
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break;
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case DP_HPD_LPHW:
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dp_lphw_hpd_put(dp_hpd);
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break;
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case DP_HPD_BRIDGE:
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dp_bridge_hpd_put(dp_hpd);
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break;
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default:
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DP_ERR("unknown hpd type %d\n", dp_hpd->type);
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break;
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}
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}
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