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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
- */
- #include <linux/slab.h>
- #include <linux/device.h>
- #include <linux/delay.h>
- #include <linux/err.h>
- #include "dp_hpd.h"
- #include "dp_usbpd.h"
- #include "dp_gpio_hpd.h"
- #include "dp_lphw_hpd.h"
- #include "dp_debug.h"
- static void dp_hpd_host_init(struct dp_hpd *dp_hpd,
- struct dp_catalog_hpd *catalog)
- {
- if (!catalog) {
- DP_ERR("invalid input\n");
- return;
- }
- catalog->config_hpd(catalog, true);
- }
- static void dp_hpd_host_deinit(struct dp_hpd *dp_hpd,
- struct dp_catalog_hpd *catalog)
- {
- if (!catalog) {
- DP_ERR("invalid input\n");
- return;
- }
- catalog->config_hpd(catalog, false);
- }
- static void dp_hpd_isr(struct dp_hpd *dp_hpd)
- {
- }
- struct dp_hpd *dp_hpd_get(struct device *dev, struct dp_parser *parser,
- struct dp_catalog_hpd *catalog, struct dp_hpd_cb *cb)
- {
- struct dp_hpd *dp_hpd;
- if (parser->no_aux_switch && parser->lphw_hpd) {
- dp_hpd = dp_lphw_hpd_get(dev, parser, catalog, cb);
- if (IS_ERR(dp_hpd)) {
- DP_ERR("failed to get lphw hpd\n");
- return dp_hpd;
- }
- dp_hpd->type = DP_HPD_LPHW;
- } else if (parser->no_aux_switch) {
- dp_hpd = dp_gpio_hpd_get(dev, cb);
- if (IS_ERR(dp_hpd)) {
- DP_ERR("failed to get gpio hpd\n");
- return dp_hpd;
- }
- dp_hpd->type = DP_HPD_GPIO;
- } else {
- dp_hpd = dp_usbpd_get(dev, cb);
- if (IS_ERR(dp_hpd)) {
- DP_ERR("failed to get usbpd\n");
- return dp_hpd;
- }
- dp_hpd->type = DP_HPD_USBPD;
- }
- if (!dp_hpd->host_init)
- dp_hpd->host_init = dp_hpd_host_init;
- if (!dp_hpd->host_deinit)
- dp_hpd->host_deinit = dp_hpd_host_deinit;
- if (!dp_hpd->isr)
- dp_hpd->isr = dp_hpd_isr;
- return dp_hpd;
- }
- void dp_hpd_put(struct dp_hpd *dp_hpd)
- {
- if (!dp_hpd)
- return;
- switch (dp_hpd->type) {
- case DP_HPD_USBPD:
- dp_usbpd_put(dp_hpd);
- break;
- case DP_HPD_GPIO:
- dp_gpio_hpd_put(dp_hpd);
- break;
- case DP_HPD_LPHW:
- dp_lphw_hpd_put(dp_hpd);
- break;
- default:
- DP_ERR("unknown hpd type %d\n", dp_hpd->type);
- break;
- }
- }
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