850 lines
22 KiB
C
Executable file
850 lines
22 KiB
C
Executable file
/*
|
|
* 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"
|
|
|
|
#define DSI_CLOCK_MASTER DSI_0
|
|
#define DSI_CLOCK_SLAVE DSI_1
|
|
|
|
#define DSI_LEFT DSI_0
|
|
#define DSI_RIGHT DSI_1
|
|
|
|
/* According to the current drm framework sequence, take the encoder of
|
|
* DSI_1 as master encoder
|
|
*/
|
|
#define DSI_ENCODER_MASTER DSI_1
|
|
#define DSI_ENCODER_SLAVE DSI_0
|
|
|
|
struct msm_dsi_manager {
|
|
struct msm_dsi *dsi[DSI_MAX];
|
|
|
|
bool is_dual_dsi;
|
|
bool is_sync_needed;
|
|
int master_dsi_link_id;
|
|
};
|
|
|
|
static struct msm_dsi_manager msm_dsim_glb;
|
|
|
|
#define IS_DUAL_DSI() (msm_dsim_glb.is_dual_dsi)
|
|
#define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed)
|
|
#define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_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_dsi(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-dsi and
|
|
* sync-mode, and only one node specifies master in case of dual mode.
|
|
*/
|
|
if (!msm_dsim->is_dual_dsi)
|
|
msm_dsim->is_dual_dsi = of_property_read_bool(
|
|
np, "qcom,dual-dsi-mode");
|
|
|
|
if (msm_dsim->is_dual_dsi) {
|
|
if (of_property_read_bool(np, "qcom,master-dsi"))
|
|
msm_dsim->master_dsi_link_id = id;
|
|
if (!msm_dsim->is_sync_needed)
|
|
msm_dsim->is_sync_needed = of_property_read_bool(
|
|
np, "qcom,sync-dual-dsi");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsi_mgr_setup_components(int id)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
|
|
struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
|
|
struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
|
|
struct msm_dsi_pll *src_pll;
|
|
int ret;
|
|
|
|
if (!IS_DUAL_DSI()) {
|
|
ret = msm_dsi_host_register(msm_dsi->host, true);
|
|
if (ret)
|
|
return ret;
|
|
|
|
msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
|
|
src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
|
|
if (IS_ERR(src_pll))
|
|
return PTR_ERR(src_pll);
|
|
ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
|
|
} else if (!other_dsi) {
|
|
ret = 0;
|
|
} else {
|
|
struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ?
|
|
msm_dsi : other_dsi;
|
|
struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(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(slave_link_dsi->host, false);
|
|
if (ret)
|
|
return ret;
|
|
ret = msm_dsi_host_register(master_link_dsi->host, true);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */
|
|
msm_dsi_phy_set_usecase(clk_master_dsi->phy,
|
|
MSM_DSI_PHY_MASTER);
|
|
msm_dsi_phy_set_usecase(clk_slave_dsi->phy,
|
|
MSM_DSI_PHY_SLAVE);
|
|
src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy);
|
|
if (IS_ERR(src_pll))
|
|
return PTR_ERR(src_pll);
|
|
ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
|
|
if (ret)
|
|
return ret;
|
|
ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id,
|
|
struct msm_dsi_phy_shared_timings *shared_timings)
|
|
{
|
|
struct msm_dsi_phy_clk_request clk_req;
|
|
int ret;
|
|
bool is_dual_dsi = IS_DUAL_DSI();
|
|
|
|
msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_dual_dsi);
|
|
|
|
ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req);
|
|
msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
dsi_mgr_phy_enable(int id,
|
|
struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX])
|
|
{
|
|
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);
|
|
int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id;
|
|
int ret;
|
|
|
|
/* In case of dual DSI, some registers in PHY1 have been programmed
|
|
* during PLL0 clock's set_rate. The PHY1 reset called by host1 here
|
|
* will silently reset those PHY1 registers. Therefore we need to reset
|
|
* and enable both PHYs before any PLL clock operation.
|
|
*/
|
|
if (IS_DUAL_DSI() && mdsi && sdsi) {
|
|
if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
|
|
msm_dsi_host_reset_phy(mdsi->host);
|
|
msm_dsi_host_reset_phy(sdsi->host);
|
|
|
|
ret = enable_phy(mdsi, src_pll_id,
|
|
&shared_timings[DSI_CLOCK_MASTER]);
|
|
if (ret)
|
|
return ret;
|
|
ret = enable_phy(sdsi, src_pll_id,
|
|
&shared_timings[DSI_CLOCK_SLAVE]);
|
|
if (ret) {
|
|
msm_dsi_phy_disable(mdsi->phy);
|
|
return ret;
|
|
}
|
|
}
|
|
} else {
|
|
msm_dsi_host_reset_phy(msm_dsi->host);
|
|
ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
msm_dsi->phy_enabled = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsi_mgr_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);
|
|
|
|
/* 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(msm_dsi->phy);
|
|
}
|
|
}
|
|
|
|
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->device_flags);
|
|
|
|
/* There is only 1 panel in the global panel list
|
|
* for dual DSI 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_DSI() &&
|
|
!IS_MASTER_DSI_LINK(id) && other_dsi)
|
|
msm_dsi->panel = msm_dsi_host_get_panel(
|
|
other_dsi->host, NULL);
|
|
|
|
|
|
if (msm_dsi->panel && kms->funcs->set_encoder_mode) {
|
|
bool cmd_mode = !(msm_dsi->device_flags &
|
|
MIPI_DSI_MODE_VIDEO);
|
|
struct drm_encoder *encoder =
|
|
msm_dsi_get_encoder(msm_dsi);
|
|
|
|
kms->funcs->set_encoder_mode(kms, encoder, cmd_mode);
|
|
}
|
|
|
|
if (msm_dsi->panel && IS_DUAL_DSI())
|
|
drm_object_attach_property(&connector->base,
|
|
connector->dev->mode_config.tile_property, 0);
|
|
|
|
/* Set split display info to kms once dual DSI panel is
|
|
* connected to both hosts.
|
|
*/
|
|
if (msm_dsi->panel && IS_DUAL_DSI() &&
|
|
other_dsi && other_dsi->panel) {
|
|
bool cmd_mode = !(msm_dsi->device_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 DSI\n");
|
|
}
|
|
}
|
|
|
|
return msm_dsi->panel ? connector_status_connected :
|
|
connector_status_disconnected;
|
|
}
|
|
|
|
static void dsi_mgr_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
struct dsi_connector *dsi_connector = to_dsi_connector(connector);
|
|
|
|
DBG("");
|
|
|
|
drm_connector_cleanup(connector);
|
|
|
|
kfree(dsi_connector);
|
|
}
|
|
|
|
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 num;
|
|
|
|
if (!panel)
|
|
return 0;
|
|
|
|
/*
|
|
* In dual DSI mode, we have one connector that can be
|
|
* attached to the drm_panel.
|
|
*/
|
|
drm_panel_attach(panel, connector);
|
|
num = drm_panel_get_modes(panel);
|
|
if (!num)
|
|
return 0;
|
|
|
|
return num;
|
|
}
|
|
|
|
static enum drm_mode_status 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;
|
|
struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX];
|
|
bool is_dual_dsi = IS_DUAL_DSI();
|
|
int ret;
|
|
|
|
DBG("id=%d", id);
|
|
if (!msm_dsi_device_connected(msm_dsi))
|
|
return;
|
|
|
|
ret = dsi_mgr_phy_enable(id, phy_shared_timings);
|
|
if (ret)
|
|
goto phy_en_fail;
|
|
|
|
/* Do nothing with the host if it is slave-DSI in case of dual DSI */
|
|
if (is_dual_dsi && !IS_MASTER_DSI_LINK(id))
|
|
return;
|
|
|
|
ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi);
|
|
if (ret) {
|
|
pr_err("%s: power on host %d failed, %d\n", __func__, id, ret);
|
|
goto host_on_fail;
|
|
}
|
|
|
|
if (is_dual_dsi && msm_dsi1) {
|
|
ret = msm_dsi_host_power_on(msm_dsi1->host,
|
|
&phy_shared_timings[DSI_1], is_dual_dsi);
|
|
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.
|
|
*/
|
|
if (panel) {
|
|
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_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;
|
|
}
|
|
}
|
|
|
|
if (panel) {
|
|
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_dsi && msm_dsi1)
|
|
msm_dsi_host_disable(msm_dsi1->host);
|
|
host1_en_fail:
|
|
msm_dsi_host_disable(host);
|
|
host_en_fail:
|
|
if (panel)
|
|
drm_panel_unprepare(panel);
|
|
panel_prep_fail:
|
|
if (is_dual_dsi && msm_dsi1)
|
|
msm_dsi_host_power_off(msm_dsi1->host);
|
|
host1_on_fail:
|
|
msm_dsi_host_power_off(host);
|
|
host_on_fail:
|
|
dsi_mgr_phy_disable(id);
|
|
phy_en_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;
|
|
struct msm_dsi_pll *src_pll;
|
|
bool is_dual_dsi = IS_DUAL_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 dual 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_dual_dsi && !IS_MASTER_DSI_LINK(id))
|
|
goto disable_phy;
|
|
|
|
if (panel) {
|
|
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_dsi && msm_dsi1) {
|
|
ret = msm_dsi_host_disable(msm_dsi1->host);
|
|
if (ret)
|
|
pr_err("%s: host1 disable failed, %d\n", __func__, ret);
|
|
}
|
|
|
|
if (panel) {
|
|
ret = drm_panel_unprepare(panel);
|
|
if (ret)
|
|
pr_err("%s: Panel %d unprepare failed,%d\n", __func__,
|
|
id, ret);
|
|
}
|
|
|
|
/* Save PLL status if it is a clock source */
|
|
src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
|
|
msm_dsi_pll_save_state(src_pll);
|
|
|
|
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_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,
|
|
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_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 && !IS_MASTER_DSI_LINK(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 = {
|
|
.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;
|
|
|
|
dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL);
|
|
if (!dsi_connector)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
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)
|
|
return ERR_PTR(ret);
|
|
|
|
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;
|
|
|
|
drm_connector_attach_encoder(connector, msm_dsi->encoder);
|
|
|
|
return connector;
|
|
}
|
|
|
|
bool msm_dsi_manager_validate_current_config(u8 id)
|
|
{
|
|
bool is_dual_dsi = IS_DUAL_DSI();
|
|
|
|
/*
|
|
* For dual DSI, we only have one drm panel. For this
|
|
* use case, we register only one bridge/connector.
|
|
* Skip bridge/connector initialisation if it is
|
|
* slave-DSI for dual DSI configuration.
|
|
*/
|
|
if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) {
|
|
DBG("Skip bridge registration for slave DSI->id: %d\n", id);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
ret = drm_bridge_attach(encoder, bridge, NULL);
|
|
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);
|
|
|
|
encoder = msm_dsi->encoder;
|
|
|
|
/* link the internal dsi bridge to the external bridge */
|
|
drm_bridge_attach(encoder, ext_bridge, int_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) {
|
|
if (drm_connector_has_possible_encoder(connector, encoder))
|
|
return connector;
|
|
}
|
|
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|
|
void msm_dsi_manager_bridge_destroy(struct drm_bridge *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 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 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;
|
|
}
|
|
|
|
void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags)
|
|
{
|
|
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
|
|
struct drm_device *dev = msm_dsi->dev;
|
|
struct msm_drm_private *priv;
|
|
struct msm_kms *kms;
|
|
struct drm_encoder *encoder;
|
|
bool cmd_mode;
|
|
|
|
/*
|
|
* drm_device pointer is assigned to msm_dsi only in the modeset_init
|
|
* path. If mipi_dsi_attach() happens in DSI driver's probe path
|
|
* (generally the case when we're connected to a drm_panel of the type
|
|
* mipi_dsi_device), this would be NULL. In such cases, try to set the
|
|
* encoder mode in the DSI connector's detect() op.
|
|
*/
|
|
if (!dev)
|
|
return;
|
|
|
|
priv = dev->dev_private;
|
|
kms = priv->kms;
|
|
encoder = msm_dsi_get_encoder(msm_dsi);
|
|
cmd_mode = !(device_flags &
|
|
MIPI_DSI_MODE_VIDEO);
|
|
|
|
if (encoder && kms->funcs->set_encoder_mode)
|
|
kms->funcs->set_encoder_mode(kms, encoder, cmd_mode);
|
|
}
|
|
|
|
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_setup_components(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;
|
|
}
|
|
|