mirror of https://gitee.com/openkylin/linux.git
841 lines
22 KiB
C
841 lines
22 KiB
C
/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "msm_kms.h"
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#include "dsi.h"
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#define DSI_CLOCK_MASTER DSI_0
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#define DSI_CLOCK_SLAVE DSI_1
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#define DSI_LEFT DSI_0
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#define DSI_RIGHT DSI_1
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/* According to the current drm framework sequence, take the encoder of
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* DSI_1 as master encoder
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*/
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#define DSI_ENCODER_MASTER DSI_1
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#define DSI_ENCODER_SLAVE DSI_0
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struct msm_dsi_manager {
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struct msm_dsi *dsi[DSI_MAX];
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bool is_dual_dsi;
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bool is_sync_needed;
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int master_dsi_link_id;
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};
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static struct msm_dsi_manager msm_dsim_glb;
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#define IS_DUAL_DSI() (msm_dsim_glb.is_dual_dsi)
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#define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed)
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#define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_id == id)
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static inline struct msm_dsi *dsi_mgr_get_dsi(int id)
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{
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return msm_dsim_glb.dsi[id];
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}
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static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id)
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{
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return msm_dsim_glb.dsi[(id + 1) % DSI_MAX];
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}
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static int dsi_mgr_parse_dual_dsi(struct device_node *np, int id)
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{
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struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
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/* We assume 2 dsi nodes have the same information of dual-dsi and
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* sync-mode, and only one node specifies master in case of dual mode.
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*/
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if (!msm_dsim->is_dual_dsi)
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msm_dsim->is_dual_dsi = of_property_read_bool(
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np, "qcom,dual-dsi-mode");
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if (msm_dsim->is_dual_dsi) {
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if (of_property_read_bool(np, "qcom,master-dsi"))
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msm_dsim->master_dsi_link_id = id;
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if (!msm_dsim->is_sync_needed)
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msm_dsim->is_sync_needed = of_property_read_bool(
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np, "qcom,sync-dual-dsi");
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}
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return 0;
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}
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static int dsi_mgr_host_register(int id)
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{
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
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struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
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struct msm_dsi_pll *src_pll;
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int ret;
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if (!IS_DUAL_DSI()) {
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ret = msm_dsi_host_register(msm_dsi->host, true);
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if (ret)
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return ret;
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src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
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ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
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} else if (!other_dsi) {
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ret = 0;
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} else {
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struct msm_dsi *mdsi = IS_MASTER_DSI_LINK(id) ?
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msm_dsi : other_dsi;
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struct msm_dsi *sdsi = IS_MASTER_DSI_LINK(id) ?
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other_dsi : msm_dsi;
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/* Register slave host first, so that slave DSI device
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* has a chance to probe, and do not block the master
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* DSI device's probe.
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* Also, do not check defer for the slave host,
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* because only master DSI device adds the panel to global
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* panel list. The panel's device is the master DSI device.
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*/
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ret = msm_dsi_host_register(sdsi->host, false);
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if (ret)
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return ret;
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ret = msm_dsi_host_register(mdsi->host, true);
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if (ret)
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return ret;
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/* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */
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src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy);
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ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
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if (ret)
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return ret;
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ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll);
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}
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return ret;
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}
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struct dsi_connector {
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struct drm_connector base;
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int id;
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};
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struct dsi_bridge {
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struct drm_bridge base;
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int id;
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};
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#define to_dsi_connector(x) container_of(x, struct dsi_connector, base)
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#define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
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static inline int dsi_mgr_connector_get_id(struct drm_connector *connector)
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{
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struct dsi_connector *dsi_connector = to_dsi_connector(connector);
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return dsi_connector->id;
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}
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static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
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{
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struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge);
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return dsi_bridge->id;
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}
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static enum drm_connector_status dsi_mgr_connector_detect(
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struct drm_connector *connector, bool force)
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{
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int id = dsi_mgr_connector_get_id(connector);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
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struct msm_drm_private *priv = connector->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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DBG("id=%d", id);
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if (!msm_dsi->panel) {
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msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host,
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&msm_dsi->device_flags);
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/* There is only 1 panel in the global panel list
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* for dual DSI mode. Therefore slave dsi should get
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* the drm_panel instance from master dsi, and
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* keep using the panel flags got from the current DSI link.
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*/
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if (!msm_dsi->panel && IS_DUAL_DSI() &&
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!IS_MASTER_DSI_LINK(id) && other_dsi)
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msm_dsi->panel = msm_dsi_host_get_panel(
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other_dsi->host, NULL);
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if (msm_dsi->panel && IS_DUAL_DSI())
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drm_object_attach_property(&connector->base,
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connector->dev->mode_config.tile_property, 0);
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/* Set split display info to kms once dual DSI panel is
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* connected to both hosts.
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*/
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if (msm_dsi->panel && IS_DUAL_DSI() &&
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other_dsi && other_dsi->panel) {
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bool cmd_mode = !(msm_dsi->device_flags &
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MIPI_DSI_MODE_VIDEO);
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struct drm_encoder *encoder = msm_dsi_get_encoder(
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dsi_mgr_get_dsi(DSI_ENCODER_MASTER));
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struct drm_encoder *slave_enc = msm_dsi_get_encoder(
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dsi_mgr_get_dsi(DSI_ENCODER_SLAVE));
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if (kms->funcs->set_split_display)
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kms->funcs->set_split_display(kms, encoder,
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slave_enc, cmd_mode);
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else
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pr_err("mdp does not support dual DSI\n");
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}
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}
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return msm_dsi->panel ? connector_status_connected :
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connector_status_disconnected;
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}
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static void dsi_mgr_connector_destroy(struct drm_connector *connector)
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{
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DBG("");
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drm_connector_unregister(connector);
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drm_connector_cleanup(connector);
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}
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static void dsi_dual_connector_fix_modes(struct drm_connector *connector)
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{
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struct drm_display_mode *mode, *m;
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/* Only support left-right mode */
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list_for_each_entry_safe(mode, m, &connector->probed_modes, head) {
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mode->clock >>= 1;
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mode->hdisplay >>= 1;
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mode->hsync_start >>= 1;
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mode->hsync_end >>= 1;
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mode->htotal >>= 1;
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drm_mode_set_name(mode);
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}
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}
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static int dsi_dual_connector_tile_init(
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struct drm_connector *connector, int id)
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{
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struct drm_display_mode *mode;
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/* Fake topology id */
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char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'};
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if (connector->tile_group) {
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DBG("Tile property has been initialized");
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return 0;
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}
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/* Use the first mode only for now */
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mode = list_first_entry(&connector->probed_modes,
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struct drm_display_mode,
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head);
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if (!mode)
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return -EINVAL;
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connector->tile_group = drm_mode_get_tile_group(
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connector->dev, topo_id);
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if (!connector->tile_group)
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connector->tile_group = drm_mode_create_tile_group(
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connector->dev, topo_id);
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if (!connector->tile_group) {
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pr_err("%s: failed to create tile group\n", __func__);
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return -ENOMEM;
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}
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connector->has_tile = true;
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connector->tile_is_single_monitor = true;
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/* mode has been fixed */
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connector->tile_h_size = mode->hdisplay;
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connector->tile_v_size = mode->vdisplay;
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/* Only support left-right mode */
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connector->num_h_tile = 2;
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connector->num_v_tile = 1;
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connector->tile_v_loc = 0;
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connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0;
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return 0;
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}
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static int dsi_mgr_connector_get_modes(struct drm_connector *connector)
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{
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int id = dsi_mgr_connector_get_id(connector);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct drm_panel *panel = msm_dsi->panel;
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int ret, num;
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if (!panel)
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return 0;
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/* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode,
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* panel should not attach to any connector.
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* Only temporarily attach panel to the current connector here,
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* to let panel set mode to this connector.
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*/
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drm_panel_attach(panel, connector);
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num = drm_panel_get_modes(panel);
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drm_panel_detach(panel);
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if (!num)
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return 0;
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if (IS_DUAL_DSI()) {
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/* report half resolution to user */
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dsi_dual_connector_fix_modes(connector);
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ret = dsi_dual_connector_tile_init(connector, id);
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if (ret)
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return ret;
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ret = drm_mode_connector_set_tile_property(connector);
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if (ret) {
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pr_err("%s: set tile property failed, %d\n",
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__func__, ret);
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return ret;
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}
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}
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return num;
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}
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static int dsi_mgr_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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int id = dsi_mgr_connector_get_id(connector);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi);
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struct msm_drm_private *priv = connector->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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long actual, requested;
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DBG("");
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requested = 1000 * mode->clock;
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actual = kms->funcs->round_pixclk(kms, requested, encoder);
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DBG("requested=%ld, actual=%ld", requested, actual);
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if (actual != requested)
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return MODE_CLOCK_RANGE;
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return MODE_OK;
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}
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static struct drm_encoder *
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dsi_mgr_connector_best_encoder(struct drm_connector *connector)
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{
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int id = dsi_mgr_connector_get_id(connector);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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DBG("");
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return msm_dsi_get_encoder(msm_dsi);
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}
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static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge)
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{
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int id = dsi_mgr_bridge_get_id(bridge);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
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struct mipi_dsi_host *host = msm_dsi->host;
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struct drm_panel *panel = msm_dsi->panel;
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bool is_dual_dsi = IS_DUAL_DSI();
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int ret;
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DBG("id=%d", id);
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if (!msm_dsi_device_connected(msm_dsi) ||
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(is_dual_dsi && (DSI_1 == id)))
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return;
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ret = msm_dsi_host_power_on(host);
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if (ret) {
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pr_err("%s: power on host %d failed, %d\n", __func__, id, ret);
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goto host_on_fail;
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}
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if (is_dual_dsi && msm_dsi1) {
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ret = msm_dsi_host_power_on(msm_dsi1->host);
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if (ret) {
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pr_err("%s: power on host1 failed, %d\n",
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__func__, ret);
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goto host1_on_fail;
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}
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}
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/* Always call panel functions once, because even for dual panels,
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* there is only one drm_panel instance.
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*/
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if (panel) {
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ret = drm_panel_prepare(panel);
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if (ret) {
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pr_err("%s: prepare panel %d failed, %d\n", __func__,
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id, ret);
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goto panel_prep_fail;
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}
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}
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ret = msm_dsi_host_enable(host);
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if (ret) {
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pr_err("%s: enable host %d failed, %d\n", __func__, id, ret);
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goto host_en_fail;
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}
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if (is_dual_dsi && msm_dsi1) {
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ret = msm_dsi_host_enable(msm_dsi1->host);
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if (ret) {
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pr_err("%s: enable host1 failed, %d\n", __func__, ret);
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goto host1_en_fail;
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}
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}
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if (panel) {
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ret = drm_panel_enable(panel);
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if (ret) {
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pr_err("%s: enable panel %d failed, %d\n", __func__, id,
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ret);
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goto panel_en_fail;
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}
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}
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return;
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panel_en_fail:
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if (is_dual_dsi && msm_dsi1)
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msm_dsi_host_disable(msm_dsi1->host);
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host1_en_fail:
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msm_dsi_host_disable(host);
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host_en_fail:
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if (panel)
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drm_panel_unprepare(panel);
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panel_prep_fail:
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if (is_dual_dsi && msm_dsi1)
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msm_dsi_host_power_off(msm_dsi1->host);
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host1_on_fail:
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msm_dsi_host_power_off(host);
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host_on_fail:
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return;
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}
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static void dsi_mgr_bridge_enable(struct drm_bridge *bridge)
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{
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DBG("");
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}
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static void dsi_mgr_bridge_disable(struct drm_bridge *bridge)
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{
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DBG("");
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}
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static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
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{
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int id = dsi_mgr_bridge_get_id(bridge);
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struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
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struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
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struct mipi_dsi_host *host = msm_dsi->host;
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struct drm_panel *panel = msm_dsi->panel;
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bool is_dual_dsi = IS_DUAL_DSI();
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int ret;
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DBG("id=%d", id);
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if (!msm_dsi_device_connected(msm_dsi) ||
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(is_dual_dsi && (DSI_1 == id)))
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return;
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if (panel) {
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ret = drm_panel_disable(panel);
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if (ret)
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pr_err("%s: Panel %d OFF failed, %d\n", __func__, id,
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ret);
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}
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ret = msm_dsi_host_disable(host);
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if (ret)
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pr_err("%s: host %d disable failed, %d\n", __func__, id, ret);
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if (is_dual_dsi && msm_dsi1) {
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ret = msm_dsi_host_disable(msm_dsi1->host);
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if (ret)
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pr_err("%s: host1 disable failed, %d\n", __func__, ret);
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}
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if (panel) {
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ret = drm_panel_unprepare(panel);
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if (ret)
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pr_err("%s: Panel %d unprepare failed,%d\n", __func__,
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id, ret);
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}
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ret = msm_dsi_host_power_off(host);
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if (ret)
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pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
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if (is_dual_dsi && msm_dsi1) {
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ret = msm_dsi_host_power_off(msm_dsi1->host);
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if (ret)
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pr_err("%s: host1 power off failed, %d\n",
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__func__, ret);
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}
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}
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static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
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struct drm_display_mode *mode,
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|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
int id = dsi_mgr_bridge_get_id(bridge);
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
|
|
struct mipi_dsi_host *host = msm_dsi->host;
|
|
bool is_dual_dsi = IS_DUAL_DSI();
|
|
|
|
DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
|
|
mode->base.id, mode->name,
|
|
mode->vrefresh, mode->clock,
|
|
mode->hdisplay, mode->hsync_start,
|
|
mode->hsync_end, mode->htotal,
|
|
mode->vdisplay, mode->vsync_start,
|
|
mode->vsync_end, mode->vtotal,
|
|
mode->type, mode->flags);
|
|
|
|
if (is_dual_dsi && (DSI_1 == id))
|
|
return;
|
|
|
|
msm_dsi_host_set_display_mode(host, adjusted_mode);
|
|
if (is_dual_dsi && other_dsi)
|
|
msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode);
|
|
}
|
|
|
|
static const struct drm_connector_funcs dsi_mgr_connector_funcs = {
|
|
.dpms = drm_atomic_helper_connector_dpms,
|
|
.detect = dsi_mgr_connector_detect,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = dsi_mgr_connector_destroy,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = {
|
|
.get_modes = dsi_mgr_connector_get_modes,
|
|
.mode_valid = dsi_mgr_connector_mode_valid,
|
|
.best_encoder = dsi_mgr_connector_best_encoder,
|
|
};
|
|
|
|
static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = {
|
|
.pre_enable = dsi_mgr_bridge_pre_enable,
|
|
.enable = dsi_mgr_bridge_enable,
|
|
.disable = dsi_mgr_bridge_disable,
|
|
.post_disable = dsi_mgr_bridge_post_disable,
|
|
.mode_set = dsi_mgr_bridge_mode_set,
|
|
};
|
|
|
|
/* initialize connector when we're connected to a drm_panel */
|
|
struct drm_connector *msm_dsi_manager_connector_init(u8 id)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct drm_connector *connector = NULL;
|
|
struct dsi_connector *dsi_connector;
|
|
int ret, i;
|
|
|
|
dsi_connector = devm_kzalloc(msm_dsi->dev->dev,
|
|
sizeof(*dsi_connector), GFP_KERNEL);
|
|
if (!dsi_connector) {
|
|
ret = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
dsi_connector->id = id;
|
|
|
|
connector = &dsi_connector->base;
|
|
|
|
ret = drm_connector_init(msm_dsi->dev, connector,
|
|
&dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs);
|
|
|
|
/* Enable HPD to let hpd event is handled
|
|
* when panel is attached to the host.
|
|
*/
|
|
connector->polled = DRM_CONNECTOR_POLL_HPD;
|
|
|
|
/* Display driver doesn't support interlace now. */
|
|
connector->interlace_allowed = 0;
|
|
connector->doublescan_allowed = 0;
|
|
|
|
ret = drm_connector_register(connector);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
for (i = 0; i < MSM_DSI_ENCODER_NUM; i++)
|
|
drm_mode_connector_attach_encoder(connector,
|
|
msm_dsi->encoders[i]);
|
|
|
|
return connector;
|
|
|
|
fail:
|
|
if (connector)
|
|
dsi_mgr_connector_destroy(connector);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/* initialize bridge */
|
|
struct drm_bridge *msm_dsi_manager_bridge_init(u8 id)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct drm_bridge *bridge = NULL;
|
|
struct dsi_bridge *dsi_bridge;
|
|
int ret;
|
|
|
|
dsi_bridge = devm_kzalloc(msm_dsi->dev->dev,
|
|
sizeof(*dsi_bridge), GFP_KERNEL);
|
|
if (!dsi_bridge) {
|
|
ret = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
dsi_bridge->id = id;
|
|
|
|
bridge = &dsi_bridge->base;
|
|
bridge->funcs = &dsi_mgr_bridge_funcs;
|
|
|
|
ret = drm_bridge_attach(msm_dsi->dev, bridge);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
return bridge;
|
|
|
|
fail:
|
|
if (bridge)
|
|
msm_dsi_manager_bridge_destroy(bridge);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct drm_device *dev = msm_dsi->dev;
|
|
struct drm_encoder *encoder;
|
|
struct drm_bridge *int_bridge, *ext_bridge;
|
|
struct drm_connector *connector;
|
|
struct list_head *connector_list;
|
|
|
|
int_bridge = msm_dsi->bridge;
|
|
ext_bridge = msm_dsi->external_bridge =
|
|
msm_dsi_host_get_bridge(msm_dsi->host);
|
|
|
|
/*
|
|
* HACK: we may not know the external DSI bridge device's mode
|
|
* flags here. We'll get to know them only when the device
|
|
* attaches to the dsi host. For now, assume the bridge supports
|
|
* DSI video mode
|
|
*/
|
|
encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID];
|
|
|
|
/* link the internal dsi bridge to the external bridge */
|
|
int_bridge->next = ext_bridge;
|
|
/* set the external bridge's encoder as dsi's encoder */
|
|
ext_bridge->encoder = encoder;
|
|
|
|
drm_bridge_attach(dev, ext_bridge);
|
|
|
|
/*
|
|
* we need the drm_connector created by the external bridge
|
|
* driver (or someone else) to feed it to our driver's
|
|
* priv->connector[] list, mainly for msm_fbdev_init()
|
|
*/
|
|
connector_list = &dev->mode_config.connector_list;
|
|
|
|
list_for_each_entry(connector, connector_list, head) {
|
|
int i;
|
|
|
|
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
|
|
if (connector->encoder_ids[i] == encoder->base.id)
|
|
return connector;
|
|
}
|
|
}
|
|
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|
|
void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge)
|
|
{
|
|
}
|
|
|
|
int msm_dsi_manager_phy_enable(int id,
|
|
const unsigned long bit_rate, const unsigned long esc_rate,
|
|
u32 *clk_pre, u32 *clk_post)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi_phy *phy = msm_dsi->phy;
|
|
int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id;
|
|
struct msm_dsi_pll *pll = msm_dsi_phy_get_pll(msm_dsi->phy);
|
|
int ret;
|
|
|
|
ret = msm_dsi_phy_enable(phy, src_pll_id, bit_rate, esc_rate);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Reset DSI PHY silently changes its PLL registers to reset status,
|
|
* which will confuse clock driver and result in wrong output rate of
|
|
* link clocks. Restore PLL status if its PLL is being used as clock
|
|
* source.
|
|
*/
|
|
if (!IS_DUAL_DSI() || (id == DSI_CLOCK_MASTER)) {
|
|
ret = msm_dsi_pll_restore_state(pll);
|
|
if (ret) {
|
|
pr_err("%s: failed to restore pll state\n", __func__);
|
|
msm_dsi_phy_disable(phy);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
msm_dsi->phy_enabled = true;
|
|
msm_dsi_phy_get_clk_pre_post(phy, clk_pre, clk_post);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void msm_dsi_manager_phy_disable(int id)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
|
|
struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
|
|
struct msm_dsi_phy *phy = msm_dsi->phy;
|
|
struct msm_dsi_pll *pll = msm_dsi_phy_get_pll(msm_dsi->phy);
|
|
|
|
/* Save PLL status if it is a clock source */
|
|
if (!IS_DUAL_DSI() || (id == DSI_CLOCK_MASTER))
|
|
msm_dsi_pll_save_state(pll);
|
|
|
|
/* disable DSI phy
|
|
* In dual-dsi configuration, the phy should be disabled for the
|
|
* first controller only when the second controller is disabled.
|
|
*/
|
|
msm_dsi->phy_enabled = false;
|
|
if (IS_DUAL_DSI() && mdsi && sdsi) {
|
|
if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
|
|
msm_dsi_phy_disable(sdsi->phy);
|
|
msm_dsi_phy_disable(mdsi->phy);
|
|
}
|
|
} else {
|
|
msm_dsi_phy_disable(phy);
|
|
}
|
|
}
|
|
|
|
int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
|
|
struct mipi_dsi_host *host = msm_dsi->host;
|
|
bool is_read = (msg->rx_buf && msg->rx_len);
|
|
bool need_sync = (IS_SYNC_NEEDED() && !is_read);
|
|
int ret;
|
|
|
|
if (!msg->tx_buf || !msg->tx_len)
|
|
return 0;
|
|
|
|
/* In dual master case, panel requires the same commands sent to
|
|
* both DSI links. Host issues the command trigger to both links
|
|
* when DSI_1 calls the cmd transfer function, no matter it happens
|
|
* before or after DSI_0 cmd transfer.
|
|
*/
|
|
if (need_sync && (id == DSI_0))
|
|
return is_read ? msg->rx_len : msg->tx_len;
|
|
|
|
if (need_sync && msm_dsi0) {
|
|
ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg);
|
|
if (ret) {
|
|
pr_err("%s: failed to prepare non-trigger host, %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
ret = msm_dsi_host_xfer_prepare(host, msg);
|
|
if (ret) {
|
|
pr_err("%s: failed to prepare host, %d\n", __func__, ret);
|
|
goto restore_host0;
|
|
}
|
|
|
|
ret = is_read ? msm_dsi_host_cmd_rx(host, msg) :
|
|
msm_dsi_host_cmd_tx(host, msg);
|
|
|
|
msm_dsi_host_xfer_restore(host, msg);
|
|
|
|
restore_host0:
|
|
if (need_sync && msm_dsi0)
|
|
msm_dsi_host_xfer_restore(msm_dsi0->host, msg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 iova, u32 len)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
|
|
struct mipi_dsi_host *host = msm_dsi->host;
|
|
|
|
if (IS_SYNC_NEEDED() && (id == DSI_0))
|
|
return false;
|
|
|
|
if (IS_SYNC_NEEDED() && msm_dsi0)
|
|
msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, iova, len);
|
|
|
|
msm_dsi_host_cmd_xfer_commit(host, iova, len);
|
|
|
|
return true;
|
|
}
|
|
|
|
int msm_dsi_manager_register(struct msm_dsi *msm_dsi)
|
|
{
|
|
struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
|
|
int id = msm_dsi->id;
|
|
int ret;
|
|
|
|
if (id > DSI_MAX) {
|
|
pr_err("%s: invalid id %d\n", __func__, id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (msm_dsim->dsi[id]) {
|
|
pr_err("%s: dsi%d already registered\n", __func__, id);
|
|
return -EBUSY;
|
|
}
|
|
|
|
msm_dsim->dsi[id] = msm_dsi;
|
|
|
|
ret = dsi_mgr_parse_dual_dsi(msm_dsi->pdev->dev.of_node, id);
|
|
if (ret) {
|
|
pr_err("%s: failed to parse dual DSI info\n", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
ret = dsi_mgr_host_register(id);
|
|
if (ret) {
|
|
pr_err("%s: failed to register mipi dsi host for DSI %d\n",
|
|
__func__, id);
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
msm_dsim->dsi[id] = NULL;
|
|
return ret;
|
|
}
|
|
|
|
void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi)
|
|
{
|
|
struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
|
|
|
|
if (msm_dsi->host)
|
|
msm_dsi_host_unregister(msm_dsi->host);
|
|
msm_dsim->dsi[msm_dsi->id] = NULL;
|
|
}
|
|
|