diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/tc358767.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 94 |
1 files changed, 41 insertions, 53 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 02bd757a8987..2a58eb271f70 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -889,6 +889,7 @@ static int tc_set_edp_video_mode(struct tc_data *tc, u32 dp0_syncval; u32 bits_per_pixel = 24; u32 in_bw, out_bw; + u32 dpipxlfmt; /* * Recommended maximum number of symbols transferred in a transfer unit: @@ -938,10 +939,15 @@ static int tc_set_edp_video_mode(struct tc_data *tc, if (ret) return ret; - ret = regmap_write(tc->regmap, DPIPXLFMT, - VS_POL_ACTIVE_LOW | HS_POL_ACTIVE_LOW | - DE_POL_ACTIVE_HIGH | SUB_CFG_TYPE_CONFIG1 | - DPI_BPP_RGB888); + dpipxlfmt = DE_POL_ACTIVE_HIGH | SUB_CFG_TYPE_CONFIG1 | DPI_BPP_RGB888; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + dpipxlfmt |= VS_POL_ACTIVE_LOW; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + dpipxlfmt |= HS_POL_ACTIVE_LOW; + + ret = regmap_write(tc->regmap, DPIPXLFMT, dpipxlfmt); if (ret) return ret; @@ -1244,7 +1250,13 @@ static int tc_main_link_disable(struct tc_data *tc) if (ret) return ret; - return regmap_write(tc->regmap, DP0CTL, 0); + ret = regmap_write(tc->regmap, DP0CTL, 0); + if (ret) + return ret; + + return regmap_update_bits(tc->regmap, DP_PHY_CTRL, + PHY_M0_RST | PHY_M1_RST | PHY_M0_EN, + PHY_M0_RST | PHY_M1_RST); } static int tc_dsi_rx_enable(struct tc_data *tc) @@ -1252,10 +1264,10 @@ static int tc_dsi_rx_enable(struct tc_data *tc) u32 value; int ret; - regmap_write(tc->regmap, PPI_D0S_CLRSIPOCOUNT, 3); - regmap_write(tc->regmap, PPI_D1S_CLRSIPOCOUNT, 3); - regmap_write(tc->regmap, PPI_D2S_CLRSIPOCOUNT, 3); - regmap_write(tc->regmap, PPI_D3S_CLRSIPOCOUNT, 3); + regmap_write(tc->regmap, PPI_D0S_CLRSIPOCOUNT, 5); + regmap_write(tc->regmap, PPI_D1S_CLRSIPOCOUNT, 5); + regmap_write(tc->regmap, PPI_D2S_CLRSIPOCOUNT, 5); + regmap_write(tc->regmap, PPI_D3S_CLRSIPOCOUNT, 5); regmap_write(tc->regmap, PPI_D0S_ATMR, 0); regmap_write(tc->regmap, PPI_D1S_ATMR, 0); regmap_write(tc->regmap, PPI_TX_RX_TA, TTA_GET | TTA_SURE); @@ -1496,41 +1508,16 @@ tc_edp_bridge_atomic_disable(struct drm_bridge *bridge, dev_err(tc->dev, "main link disable error: %d\n", ret); } -static bool tc_bridge_mode_fixup(struct drm_bridge *bridge, - const struct drm_display_mode *mode, - struct drm_display_mode *adj) -{ - /* Fixup sync polarities, both hsync and vsync are active low */ - adj->flags = mode->flags; - adj->flags |= (DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); - adj->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); - - return true; -} - -static int tc_common_atomic_check(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - const unsigned int max_khz) -{ - tc_bridge_mode_fixup(bridge, &crtc_state->mode, - &crtc_state->adjusted_mode); - - if (crtc_state->adjusted_mode.clock > max_khz) - return -EINVAL; - - return 0; -} - static int tc_dpi_atomic_check(struct drm_bridge *bridge, struct drm_bridge_state *bridge_state, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { /* DSI->DPI interface clock limitation: upto 100 MHz */ - return tc_common_atomic_check(bridge, bridge_state, crtc_state, - conn_state, 100000); + if (crtc_state->adjusted_mode.clock > 100000) + return -EINVAL; + + return 0; } static int tc_edp_atomic_check(struct drm_bridge *bridge, @@ -1539,8 +1526,10 @@ static int tc_edp_atomic_check(struct drm_bridge *bridge, struct drm_connector_state *conn_state) { /* DPI->(e)DP interface clock limitation: upto 154 MHz */ - return tc_common_atomic_check(bridge, bridge_state, crtc_state, - conn_state, 154000); + if (crtc_state->adjusted_mode.clock > 154000) + return -EINVAL; + + return 0; } static enum drm_mode_status @@ -1783,7 +1772,6 @@ static const struct drm_bridge_funcs tc_edp_bridge_funcs = { .atomic_check = tc_edp_atomic_check, .atomic_enable = tc_edp_bridge_atomic_enable, .atomic_disable = tc_edp_bridge_atomic_disable, - .mode_fixup = tc_bridge_mode_fixup, .detect = tc_bridge_detect, .get_edid = tc_get_edid, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, @@ -1925,22 +1913,23 @@ static int tc_mipi_dsi_host_attach(struct tc_data *tc) static int tc_probe_dpi_bridge_endpoint(struct tc_data *tc) { struct device *dev = tc->dev; + struct drm_bridge *bridge; struct drm_panel *panel; int ret; /* port@1 is the DPI input/output port */ - ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge); if (ret && ret != -ENODEV) return ret; if (panel) { - struct drm_bridge *panel_bridge; - - panel_bridge = devm_drm_panel_bridge_add(dev, panel); - if (IS_ERR(panel_bridge)) - return PTR_ERR(panel_bridge); + bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); + } - tc->panel_bridge = panel_bridge; + if (bridge) { + tc->panel_bridge = bridge; tc->bridge.type = DRM_MODE_CONNECTOR_DPI; tc->bridge.funcs = &tc_dpi_bridge_funcs; @@ -2010,9 +1999,10 @@ static int tc_probe_bridge_endpoint(struct tc_data *tc) for_each_endpoint_of_node(dev->of_node, node) { of_graph_parse_endpoint(node, &endpoint); - if (endpoint.port > 2) + if (endpoint.port > 2) { + of_node_put(node); return -EINVAL; - + } mode |= BIT(endpoint.port); } @@ -2194,13 +2184,11 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) return 0; } -static int tc_remove(struct i2c_client *client) +static void tc_remove(struct i2c_client *client) { struct tc_data *tc = i2c_get_clientdata(client); drm_bridge_remove(&tc->bridge); - - return 0; } static const struct i2c_device_id tc358767_i2c_ids[] = { |