702 lines
18 KiB
C
702 lines
18 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*/
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#include "drm/drm_bridge_connector.h"
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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_bonded_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_BONDED_DSI() (msm_dsim_glb.is_bonded_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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#ifdef CONFIG_OF
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static bool dsi_mgr_power_on_early(struct drm_bridge *bridge)
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{
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struct drm_bridge *next_bridge = drm_bridge_get_next_bridge(bridge);
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/*
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* If the next bridge in the chain is the Parade ps8640 bridge chip
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* then don't power on early since it seems to violate the expectations
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* of the firmware that the bridge chip is running.
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*
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* NOTE: this is expected to be a temporary special case. It's expected
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* that we'll eventually have a framework that allows the next level
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* bridge to indicate whether it needs us to power on before it or
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* after it. When that framework is in place then we'll use it and
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* remove this special case.
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*/
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return !(next_bridge && next_bridge->of_node &&
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of_device_is_compatible(next_bridge->of_node, "parade,ps8640"));
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}
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#else
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static inline bool dsi_mgr_power_on_early(struct drm_bridge *bridge)
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{
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return true;
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}
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#endif
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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_of(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 bonded dsi and
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* sync-mode, and only one node specifies master in case of bonded mode.
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*/
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if (!msm_dsim->is_bonded_dsi)
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msm_dsim->is_bonded_dsi = of_property_read_bool(np, "qcom,dual-dsi-mode");
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if (msm_dsim->is_bonded_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_setup_components(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 *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
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int ret;
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if (!IS_BONDED_DSI()) {
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ret = msm_dsi_host_register(msm_dsi->host);
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if (ret)
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return ret;
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msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
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msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
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} else if (other_dsi) {
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struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ?
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msm_dsi : other_dsi;
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struct msm_dsi *slave_link_dsi = 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(slave_link_dsi->host);
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if (ret)
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return ret;
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ret = msm_dsi_host_register(master_link_dsi->host);
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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 bonded DSI mode. */
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msm_dsi_phy_set_usecase(clk_master_dsi->phy,
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MSM_DSI_PHY_MASTER);
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msm_dsi_phy_set_usecase(clk_slave_dsi->phy,
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MSM_DSI_PHY_SLAVE);
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msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
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msm_dsi_host_set_phy_mode(other_dsi->host, other_dsi->phy);
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}
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return 0;
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}
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static int enable_phy(struct msm_dsi *msm_dsi,
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struct msm_dsi_phy_shared_timings *shared_timings)
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{
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struct msm_dsi_phy_clk_request clk_req;
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bool is_bonded_dsi = IS_BONDED_DSI();
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msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_bonded_dsi);
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return msm_dsi_phy_enable(msm_dsi->phy, &clk_req, shared_timings);
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}
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static int
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dsi_mgr_phy_enable(int id,
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struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX])
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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 *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
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struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
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int ret;
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/* In case of bonded DSI, some registers in PHY1 have been programmed
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* during PLL0 clock's set_rate. The PHY1 reset called by host1 here
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* will silently reset those PHY1 registers. Therefore we need to reset
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* and enable both PHYs before any PLL clock operation.
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*/
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if (IS_BONDED_DSI() && mdsi && sdsi) {
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if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
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msm_dsi_host_reset_phy(mdsi->host);
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msm_dsi_host_reset_phy(sdsi->host);
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ret = enable_phy(mdsi,
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&shared_timings[DSI_CLOCK_MASTER]);
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if (ret)
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return ret;
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ret = enable_phy(sdsi,
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&shared_timings[DSI_CLOCK_SLAVE]);
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if (ret) {
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msm_dsi_phy_disable(mdsi->phy);
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return ret;
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}
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}
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} else {
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msm_dsi_host_reset_phy(msm_dsi->host);
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ret = enable_phy(msm_dsi, &shared_timings[id]);
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if (ret)
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return ret;
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}
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msm_dsi->phy_enabled = true;
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return 0;
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}
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static void dsi_mgr_phy_disable(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 *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
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struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
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/* disable DSI phy
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* In bonded dsi configuration, the phy should be disabled for the
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* first controller only when the second controller is disabled.
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*/
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msm_dsi->phy_enabled = false;
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if (IS_BONDED_DSI() && mdsi && sdsi) {
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if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
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msm_dsi_phy_disable(sdsi->phy);
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msm_dsi_phy_disable(mdsi->phy);
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}
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} else {
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msm_dsi_phy_disable(msm_dsi->phy);
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}
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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_bridge(x) container_of(x, struct dsi_bridge, base)
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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 void msm_dsi_manager_set_split_display(u8 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_drm_private *priv = msm_dsi->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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struct msm_dsi *master_dsi, *slave_dsi;
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if (IS_BONDED_DSI() && !IS_MASTER_DSI_LINK(id)) {
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master_dsi = other_dsi;
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slave_dsi = msm_dsi;
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} else {
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master_dsi = msm_dsi;
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slave_dsi = other_dsi;
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}
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if (!msm_dsi->external_bridge || !IS_BONDED_DSI())
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return;
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/*
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* Set split display info to kms once bonded DSI panel is connected to
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* both hosts.
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*/
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if (other_dsi && other_dsi->external_bridge && kms->funcs->set_split_display) {
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kms->funcs->set_split_display(kms, master_dsi->encoder,
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slave_dsi->encoder,
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msm_dsi_is_cmd_mode(msm_dsi));
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}
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}
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static void dsi_mgr_bridge_power_on(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 msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX];
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bool is_bonded_dsi = IS_BONDED_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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return;
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/* Do nothing with the host if it is slave-DSI in case of bonded DSI */
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if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
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return;
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ret = dsi_mgr_phy_enable(id, phy_shared_timings);
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if (ret)
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goto phy_en_fail;
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ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_bonded_dsi, msm_dsi->phy);
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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_bonded_dsi && msm_dsi1) {
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ret = msm_dsi_host_power_on(msm_dsi1->host,
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&phy_shared_timings[DSI_1], is_bonded_dsi, msm_dsi1->phy);
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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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/*
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* Enable before preparing the panel, disable after unpreparing, so
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* that the panel can communicate over the DSI link.
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*/
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msm_dsi_host_enable_irq(host);
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if (is_bonded_dsi && msm_dsi1)
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msm_dsi_host_enable_irq(msm_dsi1->host);
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return;
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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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dsi_mgr_phy_disable(id);
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phy_en_fail:
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return;
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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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bool is_bonded_dsi = IS_BONDED_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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return;
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/* Do nothing with the host if it is slave-DSI in case of bonded DSI */
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if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
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return;
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if (!dsi_mgr_power_on_early(bridge))
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dsi_mgr_bridge_power_on(bridge);
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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;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (is_bonded_dsi && 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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
host1_en_fail:
|
||
|
|
msm_dsi_host_disable(host);
|
||
|
|
host_en_fail:
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
void msm_dsi_manager_tpg_enable(void)
|
||
|
|
{
|
||
|
|
struct msm_dsi *m_dsi = dsi_mgr_get_dsi(DSI_0);
|
||
|
|
struct msm_dsi *s_dsi = dsi_mgr_get_dsi(DSI_1);
|
||
|
|
|
||
|
|
/* if dual dsi, trigger tpg on master first then slave */
|
||
|
|
if (m_dsi) {
|
||
|
|
msm_dsi_host_test_pattern_en(m_dsi->host);
|
||
|
|
if (IS_BONDED_DSI() && s_dsi)
|
||
|
|
msm_dsi_host_test_pattern_en(s_dsi->host);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
bool is_bonded_dsi = IS_BONDED_DSI();
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
DBG("id=%d", id);
|
||
|
|
|
||
|
|
if (!msm_dsi_device_connected(msm_dsi))
|
||
|
|
return;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Do nothing with the host if it is slave-DSI in case of bonded DSI.
|
||
|
|
* It is safe to call dsi_mgr_phy_disable() here because a single PHY
|
||
|
|
* won't be diabled until both PHYs request disable.
|
||
|
|
*/
|
||
|
|
if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
|
||
|
|
goto disable_phy;
|
||
|
|
|
||
|
|
ret = msm_dsi_host_disable(host);
|
||
|
|
if (ret)
|
||
|
|
pr_err("%s: host %d disable failed, %d\n", __func__, id, ret);
|
||
|
|
|
||
|
|
if (is_bonded_dsi && msm_dsi1) {
|
||
|
|
ret = msm_dsi_host_disable(msm_dsi1->host);
|
||
|
|
if (ret)
|
||
|
|
pr_err("%s: host1 disable failed, %d\n", __func__, ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
msm_dsi_host_disable_irq(host);
|
||
|
|
if (is_bonded_dsi && msm_dsi1)
|
||
|
|
msm_dsi_host_disable_irq(msm_dsi1->host);
|
||
|
|
|
||
|
|
/* Save PHY status if it is a clock source */
|
||
|
|
msm_dsi_phy_pll_save_state(msm_dsi->phy);
|
||
|
|
|
||
|
|
ret = msm_dsi_host_power_off(host);
|
||
|
|
if (ret)
|
||
|
|
pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
|
||
|
|
|
||
|
|
if (is_bonded_dsi && msm_dsi1) {
|
||
|
|
ret = msm_dsi_host_power_off(msm_dsi1->host);
|
||
|
|
if (ret)
|
||
|
|
pr_err("%s: host1 power off failed, %d\n",
|
||
|
|
__func__, ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
disable_phy:
|
||
|
|
dsi_mgr_phy_disable(id);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
|
||
|
|
const struct drm_display_mode *mode,
|
||
|
|
const 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_bonded_dsi = IS_BONDED_DSI();
|
||
|
|
|
||
|
|
DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode));
|
||
|
|
|
||
|
|
if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
|
||
|
|
return;
|
||
|
|
|
||
|
|
msm_dsi_host_set_display_mode(host, adjusted_mode);
|
||
|
|
if (is_bonded_dsi && other_dsi)
|
||
|
|
msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode);
|
||
|
|
|
||
|
|
if (dsi_mgr_power_on_early(bridge))
|
||
|
|
dsi_mgr_bridge_power_on(bridge);
|
||
|
|
}
|
||
|
|
|
||
|
|
static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge,
|
||
|
|
const struct drm_display_info *info,
|
||
|
|
const struct drm_display_mode *mode)
|
||
|
|
{
|
||
|
|
int id = dsi_mgr_bridge_get_id(bridge);
|
||
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
||
|
|
struct mipi_dsi_host *host = msm_dsi->host;
|
||
|
|
struct platform_device *pdev = msm_dsi->pdev;
|
||
|
|
struct dev_pm_opp *opp;
|
||
|
|
unsigned long byte_clk_rate;
|
||
|
|
|
||
|
|
byte_clk_rate = dsi_byte_clk_get_rate(host, IS_BONDED_DSI(), mode);
|
||
|
|
|
||
|
|
opp = dev_pm_opp_find_freq_ceil(&pdev->dev, &byte_clk_rate);
|
||
|
|
if (!IS_ERR(opp)) {
|
||
|
|
dev_pm_opp_put(opp);
|
||
|
|
} else if (PTR_ERR(opp) == -ERANGE) {
|
||
|
|
/*
|
||
|
|
* An empty table is created by devm_pm_opp_set_clkname() even
|
||
|
|
* if there is none. Thus find_freq_ceil will still return
|
||
|
|
* -ERANGE in such case.
|
||
|
|
*/
|
||
|
|
if (dev_pm_opp_get_opp_count(&pdev->dev) != 0)
|
||
|
|
return MODE_CLOCK_RANGE;
|
||
|
|
} else {
|
||
|
|
return MODE_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
return msm_dsi_host_check_dsc(host, mode);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = {
|
||
|
|
.pre_enable = dsi_mgr_bridge_pre_enable,
|
||
|
|
.post_disable = dsi_mgr_bridge_post_disable,
|
||
|
|
.mode_set = dsi_mgr_bridge_mode_set,
|
||
|
|
.mode_valid = dsi_mgr_bridge_mode_valid,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
struct drm_encoder *encoder;
|
||
|
|
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;
|
||
|
|
|
||
|
|
encoder = msm_dsi->encoder;
|
||
|
|
|
||
|
|
bridge = &dsi_bridge->base;
|
||
|
|
bridge->funcs = &dsi_mgr_bridge_funcs;
|
||
|
|
|
||
|
|
drm_bridge_add(bridge);
|
||
|
|
|
||
|
|
ret = drm_bridge_attach(encoder, bridge, NULL, 0);
|
||
|
|
if (ret)
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
return bridge;
|
||
|
|
|
||
|
|
fail:
|
||
|
|
if (bridge)
|
||
|
|
msm_dsi_manager_bridge_destroy(bridge);
|
||
|
|
|
||
|
|
return ERR_PTR(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
int 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;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
int_bridge = msm_dsi->bridge;
|
||
|
|
ext_bridge = devm_drm_of_get_bridge(&msm_dsi->pdev->dev,
|
||
|
|
msm_dsi->pdev->dev.of_node, 1, 0);
|
||
|
|
if (IS_ERR(ext_bridge))
|
||
|
|
return PTR_ERR(ext_bridge);
|
||
|
|
|
||
|
|
msm_dsi->external_bridge = ext_bridge;
|
||
|
|
|
||
|
|
encoder = msm_dsi->encoder;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Try first to create the bridge without it creating its own
|
||
|
|
* connector.. currently some bridges support this, and others
|
||
|
|
* do not (and some support both modes)
|
||
|
|
*/
|
||
|
|
ret = drm_bridge_attach(encoder, ext_bridge, int_bridge,
|
||
|
|
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
|
||
|
|
if (ret == -EINVAL) {
|
||
|
|
/*
|
||
|
|
* link the internal dsi bridge to the external bridge,
|
||
|
|
* connector is created by the next bridge.
|
||
|
|
*/
|
||
|
|
ret = drm_bridge_attach(encoder, ext_bridge, int_bridge, 0);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
} else {
|
||
|
|
struct drm_connector *connector;
|
||
|
|
|
||
|
|
/* We are in charge of the connector, create one now. */
|
||
|
|
connector = drm_bridge_connector_init(dev, encoder);
|
||
|
|
if (IS_ERR(connector)) {
|
||
|
|
DRM_ERROR("Unable to create bridge connector\n");
|
||
|
|
return PTR_ERR(connector);
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = drm_connector_attach_encoder(connector, encoder);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The pipeline is ready, ping encoders if necessary */
|
||
|
|
msm_dsi_manager_set_split_display(id);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge)
|
||
|
|
{
|
||
|
|
drm_bridge_remove(bridge);
|
||
|
|
}
|
||
|
|
|
||
|
|
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 bonded 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 dma_base, 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, dma_base, len);
|
||
|
|
|
||
|
|
msm_dsi_host_cmd_xfer_commit(host, dma_base, 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_of(msm_dsi->pdev->dev.of_node, id);
|
||
|
|
if (ret) {
|
||
|
|
pr_err("%s: failed to parse OF DSI info\n", __func__);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = dsi_mgr_setup_components(id);
|
||
|
|
if (ret) {
|
||
|
|
pr_err("%s: failed to register mipi dsi host for DSI %d: %d\n",
|
||
|
|
__func__, id, ret);
|
||
|
|
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);
|
||
|
|
|
||
|
|
if (msm_dsi->id >= 0)
|
||
|
|
msm_dsim->dsi[msm_dsi->id] = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi)
|
||
|
|
{
|
||
|
|
return IS_BONDED_DSI();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
|
||
|
|
{
|
||
|
|
return IS_MASTER_DSI_LINK(msm_dsi->id);
|
||
|
|
}
|