--- /dev/null
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "msm_kms.h"
+#include "dsi.h"
+
+struct msm_dsi_manager {
+ struct msm_dsi *dsi[DSI_MAX];
+
+ bool is_dual_panel;
+ bool is_sync_needed;
+ int master_panel_id;
+};
+
+static struct msm_dsi_manager msm_dsim_glb;
+
+#define IS_DUAL_PANEL() (msm_dsim_glb.is_dual_panel)
+#define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed)
+#define IS_MASTER_PANEL(id) (msm_dsim_glb.master_panel_id == id)
+
+static inline struct msm_dsi *dsi_mgr_get_dsi(int id)
+{
+ return msm_dsim_glb.dsi[id];
+}
+
+static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id)
+{
+ return msm_dsim_glb.dsi[(id + 1) % DSI_MAX];
+}
+
+static int dsi_mgr_parse_dual_panel(struct device_node *np, int id)
+{
+ struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
+
+ /* We assume 2 dsi nodes have the same information of dual-panel and
+ * sync-mode, and only one node specifies master in case of dual mode.
+ */
+ if (!msm_dsim->is_dual_panel)
+ msm_dsim->is_dual_panel = of_property_read_bool(
+ np, "qcom,dual-panel-mode");
+
+ if (msm_dsim->is_dual_panel) {
+ if (of_property_read_bool(np, "qcom,master-panel"))
+ msm_dsim->master_panel_id = id;
+ if (!msm_dsim->is_sync_needed)
+ msm_dsim->is_sync_needed = of_property_read_bool(
+ np, "qcom,sync-dual-panel");
+ }
+
+ return 0;
+}
+
+struct dsi_connector {
+ struct drm_connector base;
+ int id;
+};
+
+struct dsi_bridge {
+ struct drm_bridge base;
+ int id;
+};
+
+#define to_dsi_connector(x) container_of(x, struct dsi_connector, base)
+#define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
+
+static inline int dsi_mgr_connector_get_id(struct drm_connector *connector)
+{
+ struct dsi_connector *dsi_connector = to_dsi_connector(connector);
+ return dsi_connector->id;
+}
+
+static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
+{
+ struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge);
+ return dsi_bridge->id;
+}
+
+static enum drm_connector_status dsi_mgr_connector_detect(
+ struct drm_connector *connector, bool force)
+{
+ int id = dsi_mgr_connector_get_id(connector);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+ struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
+ struct msm_drm_private *priv = connector->dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+
+ DBG("id=%d", id);
+ if (!msm_dsi->panel) {
+ msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host,
+ &msm_dsi->panel_flags);
+
+ /* There is only 1 panel in the global panel list
+ * for dual panel mode. Therefore slave dsi should get
+ * the drm_panel instance from master dsi, and
+ * keep using the panel flags got from the current DSI link.
+ */
+ if (!msm_dsi->panel && IS_DUAL_PANEL() &&
+ !IS_MASTER_PANEL(id) && other_dsi)
+ msm_dsi->panel = msm_dsi_host_get_panel(
+ other_dsi->host, NULL);
+
+ if (msm_dsi->panel && IS_DUAL_PANEL())
+ drm_object_attach_property(&connector->base,
+ connector->dev->mode_config.tile_property, 0);
+
+ /* Set split display info to kms once dual panel is connected
+ * to both hosts
+ */
+ if (msm_dsi->panel && IS_DUAL_PANEL() &&
+ other_dsi && other_dsi->panel) {
+ bool cmd_mode = !(msm_dsi->panel_flags &
+ MIPI_DSI_MODE_VIDEO);
+ struct drm_encoder *encoder = msm_dsi_get_encoder(
+ dsi_mgr_get_dsi(DSI_ENCODER_MASTER));
+ struct drm_encoder *slave_enc = msm_dsi_get_encoder(
+ dsi_mgr_get_dsi(DSI_ENCODER_SLAVE));
+
+ if (kms->funcs->set_split_display)
+ kms->funcs->set_split_display(kms, encoder,
+ slave_enc, cmd_mode);
+ else
+ pr_err("mdp does not support dual panel\n");
+ }
+ }
+
+ return msm_dsi->panel ? connector_status_connected :
+ connector_status_disconnected;
+}
+
+static void dsi_mgr_connector_destroy(struct drm_connector *connector)
+{
+ DBG("");
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static void dsi_dual_connector_fix_modes(struct drm_connector *connector)
+{
+ struct drm_display_mode *mode, *m;
+
+ /* Only support left-right mode */
+ list_for_each_entry_safe(mode, m, &connector->probed_modes, head) {
+ mode->clock >>= 1;
+ mode->hdisplay >>= 1;
+ mode->hsync_start >>= 1;
+ mode->hsync_end >>= 1;
+ mode->htotal >>= 1;
+ drm_mode_set_name(mode);
+ }
+}
+
+static int dsi_dual_connector_tile_init(
+ struct drm_connector *connector, int id)
+{
+ struct drm_display_mode *mode;
+ /* Fake topology id */
+ char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'};
+
+ if (connector->tile_group) {
+ DBG("Tile property has been initialized");
+ return 0;
+ }
+
+ /* Use the first mode only for now */
+ mode = list_first_entry(&connector->probed_modes,
+ struct drm_display_mode,
+ head);
+ if (!mode)
+ return -EINVAL;
+
+ connector->tile_group = drm_mode_get_tile_group(
+ connector->dev, topo_id);
+ if (!connector->tile_group)
+ connector->tile_group = drm_mode_create_tile_group(
+ connector->dev, topo_id);
+ if (!connector->tile_group) {
+ pr_err("%s: failed to create tile group\n", __func__);
+ return -ENOMEM;
+ }
+
+ connector->has_tile = true;
+ connector->tile_is_single_monitor = true;
+
+ /* mode has been fixed */
+ connector->tile_h_size = mode->hdisplay;
+ connector->tile_v_size = mode->vdisplay;
+
+ /* Only support left-right mode */
+ connector->num_h_tile = 2;
+ connector->num_v_tile = 1;
+
+ connector->tile_v_loc = 0;
+ connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0;
+
+ return 0;
+}
+
+static int dsi_mgr_connector_get_modes(struct drm_connector *connector)
+{
+ int id = dsi_mgr_connector_get_id(connector);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+ struct drm_panel *panel = msm_dsi->panel;
+ int ret, num;
+
+ if (!panel)
+ return 0;
+
+ /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode,
+ * panel should not attach to any connector.
+ * Only temporarily attach panel to the current connector here,
+ * to let panel set mode to this connector.
+ */
+ drm_panel_attach(panel, connector);
+ num = drm_panel_get_modes(panel);
+ drm_panel_detach(panel);
+ if (!num)
+ return 0;
+
+ if (IS_DUAL_PANEL()) {
+ /* report half resolution to user */
+ dsi_dual_connector_fix_modes(connector);
+ ret = dsi_dual_connector_tile_init(connector, id);
+ if (ret)
+ return ret;
+ ret = drm_mode_connector_set_tile_property(connector);
+ if (ret) {
+ pr_err("%s: set tile property failed, %d\n",
+ __func__, ret);
+ return ret;
+ }
+ }
+
+ return num;
+}
+
+static int dsi_mgr_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ int id = dsi_mgr_connector_get_id(connector);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+ struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi);
+ struct msm_drm_private *priv = connector->dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ long actual, requested;
+
+ DBG("");
+ requested = 1000 * mode->clock;
+ actual = kms->funcs->round_pixclk(kms, requested, encoder);
+
+ DBG("requested=%ld, actual=%ld", requested, actual);
+ if (actual != requested)
+ return MODE_CLOCK_RANGE;
+
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+dsi_mgr_connector_best_encoder(struct drm_connector *connector)
+{
+ int id = dsi_mgr_connector_get_id(connector);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+
+ DBG("");
+ return msm_dsi_get_encoder(msm_dsi);
+}
+
+static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge)
+{
+ int id = dsi_mgr_bridge_get_id(bridge);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+ struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
+ struct mipi_dsi_host *host = msm_dsi->host;
+ struct drm_panel *panel = msm_dsi->panel;
+ bool is_dual_panel = IS_DUAL_PANEL();
+ int ret;
+
+ DBG("id=%d", id);
+ if (!panel || (is_dual_panel && (DSI_1 == id)))
+ return;
+
+ ret = msm_dsi_host_power_on(host);
+ if (ret) {
+ pr_err("%s: power on host %d failed, %d\n", __func__, id, ret);
+ goto host_on_fail;
+ }
+
+ if (is_dual_panel && msm_dsi1) {
+ ret = msm_dsi_host_power_on(msm_dsi1->host);
+ if (ret) {
+ pr_err("%s: power on host1 failed, %d\n",
+ __func__, ret);
+ goto host1_on_fail;
+ }
+ }
+
+ /* Always call panel functions once, because even for dual panels,
+ * there is only one drm_panel instance.
+ */
+ ret = drm_panel_prepare(panel);
+ if (ret) {
+ pr_err("%s: prepare panel %d failed, %d\n", __func__, id, ret);
+ goto panel_prep_fail;
+ }
+
+ ret = msm_dsi_host_enable(host);
+ if (ret) {
+ pr_err("%s: enable host %d failed, %d\n", __func__, id, ret);
+ goto host_en_fail;
+ }
+
+ if (is_dual_panel && msm_dsi1) {
+ ret = msm_dsi_host_enable(msm_dsi1->host);
+ if (ret) {
+ pr_err("%s: enable host1 failed, %d\n", __func__, ret);
+ goto host1_en_fail;
+ }
+ }
+
+ ret = drm_panel_enable(panel);
+ if (ret) {
+ pr_err("%s: enable panel %d failed, %d\n", __func__, id, ret);
+ goto panel_en_fail;
+ }
+
+ return;
+
+panel_en_fail:
+ if (is_dual_panel && msm_dsi1)
+ msm_dsi_host_disable(msm_dsi1->host);
+host1_en_fail:
+ msm_dsi_host_disable(host);
+host_en_fail:
+ drm_panel_unprepare(panel);
+panel_prep_fail:
+ if (is_dual_panel && msm_dsi1)
+ msm_dsi_host_power_off(msm_dsi1->host);
+host1_on_fail:
+ msm_dsi_host_power_off(host);
+host_on_fail:
+ return;
+}
+
+static void dsi_mgr_bridge_enable(struct drm_bridge *bridge)
+{
+ DBG("");
+}
+
+static void dsi_mgr_bridge_disable(struct drm_bridge *bridge)
+{
+ DBG("");
+}
+
+static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
+{
+ int id = dsi_mgr_bridge_get_id(bridge);
+ struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+ struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
+ struct mipi_dsi_host *host = msm_dsi->host;
+ struct drm_panel *panel = msm_dsi->panel;
+ bool is_dual_panel = IS_DUAL_PANEL();
+ int ret;
+
+ DBG("id=%d", id);
+
+ if (!panel || (is_dual_panel && (DSI_1 == id)))
+ return;
+
+ ret = drm_panel_disable(panel);
+ if (ret)
+ pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, ret);
+
+ ret = msm_dsi_host_disable(host);
+ if (ret)
+ pr_err("%s: host %d disable failed, %d\n", __func__, id, ret);
+
+ if (is_dual_panel && msm_dsi1) {
+ ret = msm_dsi_host_disable(msm_dsi1->host);
+ if (ret)
+ pr_err("%s: host1 disable failed, %d\n", __func__, ret);
+ }
+
+ ret = drm_panel_unprepare(panel);
+ if (ret)
+ pr_err("%s: Panel %d unprepare failed,%d\n", __func__, id, ret);
+
+ ret = msm_dsi_host_power_off(host);
+ if (ret)
+ pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
+
+ if (is_dual_panel && msm_dsi1) {
+ ret = msm_dsi_host_power_off(msm_dsi1->host);
+ if (ret)
+ pr_err("%s: host1 power off failed, %d\n",
+ __func__, ret);
+ }
+}
+
+static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
+ struct drm_display_mode *mode,
+ 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_panel = IS_DUAL_PANEL();
+
+ 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_panel && (DSI_1 == id))
+ return;
+
+ msm_dsi_host_set_display_mode(host, adjusted_mode);
+ if (is_dual_panel && 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 */
+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);
+}
+
+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 ret;
+
+ ret = msm_dsi_phy_enable(phy, IS_DUAL_PANEL(), bit_rate, esc_rate);
+ if (ret)
+ 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;
+
+ /* 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_PANEL() && 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;
+ struct msm_dsi *other_dsi = dsi_mgr_get_other_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_panel(msm_dsi->pdev->dev.of_node, id);
+ if (ret) {
+ pr_err("%s: failed to parse dual panel info\n", __func__);
+ return ret;
+ }
+
+ if (!IS_DUAL_PANEL()) {
+ ret = msm_dsi_host_register(msm_dsi->host, true);
+ } else if (!other_dsi) {
+ return 0;
+ } else {
+ struct msm_dsi *mdsi = IS_MASTER_PANEL(id) ?
+ msm_dsi : other_dsi;
+ struct msm_dsi *sdsi = IS_MASTER_PANEL(id) ?
+ other_dsi : msm_dsi;
+ /* Register slave host first, so that slave DSI device
+ * has a chance to probe, and do not block the master
+ * DSI device's probe.
+ * Also, do not check defer for the slave host,
+ * because only master DSI device adds the panel to global
+ * panel list. The panel's device is the master DSI device.
+ */
+ ret = msm_dsi_host_register(sdsi->host, false);
+ if (ret)
+ return ret;
+ ret = msm_dsi_host_register(mdsi->host, true);
+ }
+
+ 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;
+}
+
Code Review / kvmfornfv.git / blobdiff