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OpenCloudOS-Kernel/drivers/gpu/drm/msm/dsi/dsi_manager.c

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/*
* 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);
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);
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;
msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req);
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 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_DSI()) {
/* 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;
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 DSI 1 in case of dual DSI */
if (is_dual_dsi && (DSI_1 == id))
return;
ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]);
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]);
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;
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 DSI 1 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 && (DSI_1 == 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);
}
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 && (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;
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_mode_connector_attach_encoder(connector, msm_dsi->encoder);
return connector;
}
/* 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) {
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_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;
/*
* 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);
if (encoder && kms->funcs->set_encoder_mode)
if (!(device_flags & MIPI_DSI_MODE_VIDEO))
kms->funcs->set_encoder_mode(kms, encoder, 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_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;
}
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