| /* |
| * Copyright (c) 2016-2017, 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) "msm-dsi-display:[%s] " fmt, __func__ |
| |
| #include <linux/list.h> |
| #include <linux/of.h> |
| |
| #include "msm_drv.h" |
| #include "dsi_display.h" |
| #include "dsi_panel.h" |
| #include "dsi_ctrl.h" |
| #include "dsi_ctrl_hw.h" |
| #include "dsi_drm.h" |
| #include "dsi_clk.h" |
| #include "dsi_pwr.h" |
| |
| #define to_dsi_display(x) container_of(x, struct dsi_display, host) |
| |
| static DEFINE_MUTEX(dsi_display_list_lock); |
| static LIST_HEAD(dsi_display_list); |
| |
| static const struct of_device_id dsi_display_dt_match[] = { |
| {.compatible = "qcom,dsi-display"}, |
| {} |
| }; |
| |
| static struct dsi_display *main_display; |
| |
| int dsi_display_set_backlight(void *display, u32 bl_lvl) |
| { |
| struct dsi_display *dsi_display = display; |
| struct dsi_panel *panel; |
| int rc = 0; |
| |
| if (dsi_display == NULL) |
| return -EINVAL; |
| |
| panel = dsi_display->panel; |
| |
| rc = dsi_panel_set_backlight(panel, bl_lvl); |
| if (rc) |
| pr_err("unable to set backlight\n"); |
| |
| return rc; |
| } |
| |
| static ssize_t debugfs_dump_info_read(struct file *file, |
| char __user *buff, |
| size_t count, |
| loff_t *ppos) |
| { |
| struct dsi_display *display = file->private_data; |
| char *buf; |
| u32 len = 0; |
| int i; |
| |
| if (!display) |
| return -ENODEV; |
| |
| if (*ppos) |
| return 0; |
| |
| buf = kzalloc(SZ_4K, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| len += snprintf(buf + len, (SZ_4K - len), "name = %s\n", display->name); |
| len += snprintf(buf + len, (SZ_4K - len), |
| "\tResolution = %dx%d\n", |
| display->config.video_timing.h_active, |
| display->config.video_timing.v_active); |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| len += snprintf(buf + len, (SZ_4K - len), |
| "\tCTRL_%d:\n\t\tctrl = %s\n\t\tphy = %s\n", |
| i, display->ctrl[i].ctrl->name, |
| display->ctrl[i].phy->name); |
| } |
| |
| len += snprintf(buf + len, (SZ_4K - len), |
| "\tPanel = %s\n", display->panel->name); |
| |
| len += snprintf(buf + len, (SZ_4K - len), |
| "\tClock master = %s\n", |
| display->ctrl[display->clk_master_idx].ctrl->name); |
| |
| if (copy_to_user(buff, buf, len)) { |
| kfree(buf); |
| return -EFAULT; |
| } |
| |
| *ppos += len; |
| |
| kfree(buf); |
| return len; |
| } |
| |
| |
| static const struct file_operations dump_info_fops = { |
| .open = simple_open, |
| .read = debugfs_dump_info_read, |
| }; |
| |
| static int dsi_display_debugfs_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| struct dentry *dir, *dump_file; |
| |
| dir = debugfs_create_dir(display->name, NULL); |
| if (IS_ERR_OR_NULL(dir)) { |
| rc = PTR_ERR(dir); |
| pr_err("[%s] debugfs create dir failed, rc = %d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| dump_file = debugfs_create_file("dump_info", |
| 0444, |
| dir, |
| display, |
| &dump_info_fops); |
| if (IS_ERR_OR_NULL(dump_file)) { |
| rc = PTR_ERR(dump_file); |
| pr_err("[%s] debugfs create file failed, rc=%d\n", |
| display->name, rc); |
| goto error_remove_dir; |
| } |
| |
| display->root = dir; |
| return rc; |
| error_remove_dir: |
| debugfs_remove(dir); |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_debugfs_deinit(struct dsi_display *display) |
| { |
| debugfs_remove_recursive(display->root); |
| |
| return 0; |
| } |
| |
| static void adjust_timing_by_ctrl_count(const struct dsi_display *display, |
| struct dsi_display_mode *mode) |
| { |
| if (display->ctrl_count > 1) { |
| mode->timing.h_active /= display->ctrl_count; |
| mode->timing.h_front_porch /= display->ctrl_count; |
| mode->timing.h_sync_width /= display->ctrl_count; |
| mode->timing.h_back_porch /= display->ctrl_count; |
| mode->timing.h_skew /= display->ctrl_count; |
| mode->pixel_clk_khz /= display->ctrl_count; |
| } |
| } |
| |
| static int dsi_display_is_ulps_req_valid(struct dsi_display *display, |
| bool enable) |
| { |
| /* TODO: make checks based on cont. splash */ |
| int splash_enabled = false; |
| |
| pr_debug("checking ulps req validity\n"); |
| |
| if (!dsi_panel_ulps_feature_enabled(display->panel)) |
| return false; |
| |
| /* TODO: ULPS during suspend */ |
| if (!dsi_panel_initialized(display->panel)) |
| return false; |
| |
| if (enable && display->ulps_enabled) { |
| pr_debug("ULPS already enabled\n"); |
| return false; |
| } else if (!enable && !display->ulps_enabled) { |
| pr_debug("ULPS already disabled\n"); |
| return false; |
| } |
| |
| /* |
| * No need to enter ULPS when transitioning from splash screen to |
| * boot animation since it is expected that the clocks would be turned |
| * right back on. |
| */ |
| if (enable && splash_enabled) |
| return false; |
| |
| return true; |
| } |
| |
| |
| /** |
| * dsi_display_set_ulps() - set ULPS state for DSI lanes. |
| * @dsi_display: DSI display handle. |
| * @enable: enable/disable ULPS. |
| * |
| * ULPS can be enabled/disabled after DSI host engine is turned on. |
| * |
| * Return: error code. |
| */ |
| static int dsi_display_set_ulps(struct dsi_display *display, bool enable) |
| { |
| int rc = 0; |
| int i = 0; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| if (!dsi_display_is_ulps_req_valid(display, enable)) { |
| pr_debug("%s: skipping ULPS config, enable=%d\n", |
| __func__, enable); |
| return 0; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| |
| rc = dsi_ctrl_set_ulps(m_ctrl->ctrl, enable); |
| if (rc) { |
| pr_err("Ulps controller state change(%d) failed\n", enable); |
| return rc; |
| } |
| |
| rc = dsi_phy_set_ulps(m_ctrl->phy, &display->config, enable); |
| if (rc) { |
| pr_err("Ulps PHY state change(%d) failed\n", enable); |
| return rc; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_ulps(ctrl->ctrl, enable); |
| if (rc) { |
| pr_err("Ulps controller state change(%d) failed\n", |
| enable); |
| return rc; |
| } |
| |
| rc = dsi_phy_set_ulps(ctrl->phy, &display->config, enable); |
| if (rc) { |
| pr_err("Ulps PHY state change(%d) failed\n", enable); |
| return rc; |
| } |
| |
| } |
| display->ulps_enabled = enable; |
| return 0; |
| } |
| |
| /** |
| * dsi_display_set_clamp() - set clamp state for DSI IO. |
| * @dsi_display: DSI display handle. |
| * @enable: enable/disable clamping. |
| * |
| * Return: error code. |
| */ |
| static int dsi_display_set_clamp(struct dsi_display *display, bool enable) |
| { |
| int rc = 0; |
| int i = 0; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| bool ulps_enabled = false; |
| |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| ulps_enabled = display->ulps_enabled; |
| |
| rc = dsi_ctrl_set_clamp_state(m_ctrl->ctrl, enable, ulps_enabled); |
| if (rc) { |
| pr_err("DSI Clamp state change(%d) failed\n", enable); |
| return rc; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_clamp_state(ctrl->ctrl, enable, ulps_enabled); |
| if (rc) { |
| pr_err("DSI Clamp state change(%d) failed\n", enable); |
| return rc; |
| } |
| } |
| display->clamp_enabled = enable; |
| return 0; |
| } |
| |
| /** |
| * dsi_display_setup_ctrl() - setup DSI controller. |
| * @dsi_display: DSI display handle. |
| * |
| * Return: error code. |
| */ |
| static int dsi_display_ctrl_setup(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i = 0; |
| struct dsi_display_ctrl *ctrl, *m_ctrl; |
| |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| rc = dsi_ctrl_setup(m_ctrl->ctrl); |
| if (rc) { |
| pr_err("DSI controller setup failed\n"); |
| return rc; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_setup(ctrl->ctrl); |
| if (rc) { |
| pr_err("DSI controller setup failed\n"); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| static int dsi_display_phy_enable(struct dsi_display *display); |
| |
| /** |
| * dsi_display_phy_idle_on() - enable DSI PHY while coming out of idle screen. |
| * @dsi_display: DSI display handle. |
| * @enable: enable/disable DSI PHY. |
| * |
| * Return: error code. |
| */ |
| static int dsi_display_phy_idle_on(struct dsi_display *display, |
| bool mmss_clamp) |
| { |
| int rc = 0; |
| int i = 0; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| if (mmss_clamp && !display->phy_idle_power_off) { |
| dsi_display_phy_enable(display); |
| return 0; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| rc = dsi_phy_idle_ctrl(m_ctrl->phy, true); |
| if (rc) { |
| pr_err("DSI controller setup failed\n"); |
| return rc; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_phy_idle_ctrl(ctrl->phy, true); |
| if (rc) { |
| pr_err("DSI controller setup failed\n"); |
| return rc; |
| } |
| } |
| display->phy_idle_power_off = false; |
| return 0; |
| } |
| |
| /** |
| * dsi_display_phy_idle_off() - disable DSI PHY while going to idle screen. |
| * @dsi_display: DSI display handle. |
| * @enable: enable/disable DSI PHY. |
| * |
| * Return: error code. |
| */ |
| static int dsi_display_phy_idle_off(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i = 0; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| if (!display->panel->allow_phy_power_off) { |
| pr_debug("panel doesn't support this feature\n"); |
| return 0; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| |
| rc = dsi_phy_idle_ctrl(m_ctrl->phy, false); |
| if (rc) { |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| return rc; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_phy_idle_ctrl(ctrl->phy, false); |
| if (rc) { |
| pr_err("DSI controller setup failed\n"); |
| return rc; |
| } |
| } |
| display->phy_idle_power_off = true; |
| return 0; |
| } |
| |
| |
| |
| static int dsi_display_ctrl_power_on(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| /* Sequence does not matter for split dsi usecases */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl) |
| continue; |
| |
| rc = dsi_ctrl_set_power_state(ctrl->ctrl, |
| DSI_CTRL_POWER_VREG_ON); |
| if (rc) { |
| pr_err("[%s] Failed to set power state, rc=%d\n", |
| ctrl->ctrl->name, rc); |
| goto error; |
| } |
| } |
| |
| return rc; |
| error: |
| for (i = i - 1; i >= 0; i--) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl) |
| continue; |
| (void)dsi_ctrl_set_power_state(ctrl->ctrl, |
| DSI_CTRL_POWER_VREG_OFF); |
| } |
| return rc; |
| } |
| |
| static int dsi_display_ctrl_power_off(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| /* Sequence does not matter for split dsi usecases */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl) |
| continue; |
| |
| rc = dsi_ctrl_set_power_state(ctrl->ctrl, |
| DSI_CTRL_POWER_VREG_OFF); |
| if (rc) { |
| pr_err("[%s] Failed to power off, rc=%d\n", |
| ctrl->ctrl->name, rc); |
| goto error; |
| } |
| } |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_phy_power_on(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| /* Sequence does not matter for split dsi usecases */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl) |
| continue; |
| |
| rc = dsi_phy_set_power_state(ctrl->phy, true); |
| if (rc) { |
| pr_err("[%s] Failed to set power state, rc=%d\n", |
| ctrl->phy->name, rc); |
| goto error; |
| } |
| } |
| |
| return rc; |
| error: |
| for (i = i - 1; i >= 0; i--) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->phy) |
| continue; |
| (void)dsi_phy_set_power_state(ctrl->phy, false); |
| } |
| return rc; |
| } |
| |
| static int dsi_display_phy_power_off(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| /* Sequence does not matter for split dsi usecases */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->phy) |
| continue; |
| |
| rc = dsi_phy_set_power_state(ctrl->phy, false); |
| if (rc) { |
| pr_err("[%s] Failed to power off, rc=%d\n", |
| ctrl->ctrl->name, rc); |
| goto error; |
| } |
| } |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_set_clk_src(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| /* |
| * In case of split DSI usecases, the clock for master controller should |
| * be enabled before the other controller. Master controller in the |
| * clock context refers to the controller that sources the clock. |
| */ |
| m_ctrl = &display->ctrl[display->clk_master_idx]; |
| |
| rc = dsi_ctrl_set_clock_source(m_ctrl->ctrl, |
| &display->clock_info.src_clks); |
| if (rc) { |
| pr_err("[%s] failed to set source clocks for master, rc=%d\n", |
| display->name, rc); |
| return rc; |
| } |
| |
| /* Turn on rest of the controllers */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_clock_source(ctrl->ctrl, |
| &display->clock_info.src_clks); |
| if (rc) { |
| pr_err("[%s] failed to set source clocks, rc=%d\n", |
| display->name, rc); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| static int dsi_display_phy_reset_config(struct dsi_display *display, |
| bool enable) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| for (i = 0 ; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_phy_reset_config(ctrl->ctrl, enable); |
| if (rc) { |
| pr_err("[%s] failed to %s phy reset, rc=%d\n", |
| display->name, enable ? "mask" : "unmask", rc); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| static int dsi_display_ctrl_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| for (i = 0 ; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_host_init(ctrl->ctrl); |
| if (rc) { |
| pr_err("[%s] failed to init host_%d, rc=%d\n", |
| display->name, i, rc); |
| goto error_host_deinit; |
| } |
| } |
| |
| return 0; |
| error_host_deinit: |
| for (i = i - 1; i >= 0; i--) { |
| ctrl = &display->ctrl[i]; |
| (void)dsi_ctrl_host_deinit(ctrl->ctrl); |
| } |
| return rc; |
| } |
| |
| static int dsi_display_ctrl_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| for (i = 0 ; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_host_deinit(ctrl->ctrl); |
| if (rc) { |
| pr_err("[%s] failed to deinit host_%d, rc=%d\n", |
| display->name, i, rc); |
| } |
| } |
| |
| return rc; |
| } |
| |
| static int dsi_display_cmd_engine_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| if (display->cmd_engine_refcount > 0) { |
| display->cmd_engine_refcount++; |
| return 0; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| |
| rc = dsi_ctrl_set_cmd_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_cmd_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_master; |
| } |
| } |
| |
| display->cmd_engine_refcount++; |
| return rc; |
| error_disable_master: |
| (void)dsi_ctrl_set_cmd_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_cmd_engine_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| if (display->cmd_engine_refcount == 0) { |
| pr_err("[%s] Invalid refcount\n", display->name); |
| return 0; |
| } else if (display->cmd_engine_refcount > 1) { |
| display->cmd_engine_refcount--; |
| return 0; |
| } |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_cmd_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_OFF); |
| if (rc) |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| } |
| |
| rc = dsi_ctrl_set_cmd_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| if (rc) { |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| error: |
| display->cmd_engine_refcount = 0; |
| return rc; |
| } |
| |
| static int dsi_display_ctrl_host_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| |
| rc = dsi_ctrl_set_host_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable host engine, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_host_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable sl host engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_master; |
| } |
| } |
| |
| return rc; |
| error_disable_master: |
| (void)dsi_ctrl_set_host_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_ctrl_host_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_host_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_OFF); |
| if (rc) |
| pr_err("[%s] failed to disable host engine, rc=%d\n", |
| display->name, rc); |
| } |
| |
| rc = dsi_ctrl_set_host_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| if (rc) { |
| pr_err("[%s] failed to disable host engine, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_vid_engine_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->video_master_idx]; |
| |
| rc = dsi_ctrl_set_vid_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable vid engine, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_vid_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable vid engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_master; |
| } |
| } |
| |
| return rc; |
| error_disable_master: |
| (void)dsi_ctrl_set_vid_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_vid_engine_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->video_master_idx]; |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_set_vid_engine_state(ctrl->ctrl, |
| DSI_CTRL_ENGINE_OFF); |
| if (rc) |
| pr_err("[%s] failed to disable vid engine, rc=%d\n", |
| display->name, rc); |
| } |
| |
| rc = dsi_ctrl_set_vid_engine_state(m_ctrl->ctrl, DSI_CTRL_ENGINE_OFF); |
| if (rc) |
| pr_err("[%s] failed to disable mvid engine, rc=%d\n", |
| display->name, rc); |
| |
| return rc; |
| } |
| |
| static int dsi_display_phy_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| enum dsi_phy_pll_source m_src = DSI_PLL_SOURCE_STANDALONE; |
| |
| m_ctrl = &display->ctrl[display->clk_master_idx]; |
| if (display->ctrl_count > 1) |
| m_src = DSI_PLL_SOURCE_NATIVE; |
| |
| rc = dsi_phy_enable(m_ctrl->phy, |
| &display->config, |
| m_src, |
| true); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI PHY, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_phy_enable(ctrl->phy, |
| &display->config, |
| DSI_PLL_SOURCE_NON_NATIVE, |
| true); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI PHY, rc=%d\n", |
| display->name, rc); |
| goto error_disable_master; |
| } |
| } |
| |
| return rc; |
| |
| error_disable_master: |
| (void)dsi_phy_disable(m_ctrl->phy); |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_phy_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->clk_master_idx]; |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_phy_disable(ctrl->phy); |
| if (rc) |
| pr_err("[%s] failed to disable DSI PHY, rc=%d\n", |
| display->name, rc); |
| } |
| |
| rc = dsi_phy_disable(m_ctrl->phy); |
| if (rc) |
| pr_err("[%s] failed to disable DSI PHY, rc=%d\n", |
| display->name, rc); |
| |
| return rc; |
| } |
| |
| static int dsi_display_wake_up(struct dsi_display *display) |
| { |
| return 0; |
| } |
| |
| static int dsi_display_broadcast_cmd(struct dsi_display *display, |
| const struct mipi_dsi_msg *msg) |
| { |
| int rc = 0; |
| u32 flags, m_flags; |
| struct dsi_display_ctrl *ctrl, *m_ctrl; |
| int i; |
| |
| m_flags = (DSI_CTRL_CMD_BROADCAST | DSI_CTRL_CMD_BROADCAST_MASTER | |
| DSI_CTRL_CMD_DEFER_TRIGGER | DSI_CTRL_CMD_FIFO_STORE); |
| flags = (DSI_CTRL_CMD_BROADCAST | DSI_CTRL_CMD_DEFER_TRIGGER | |
| DSI_CTRL_CMD_FIFO_STORE); |
| |
| /* |
| * 1. Setup commands in FIFO |
| * 2. Trigger commands |
| */ |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| rc = dsi_ctrl_cmd_transfer(m_ctrl->ctrl, msg, m_flags); |
| if (rc) { |
| pr_err("[%s] cmd transfer failed on master,rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (ctrl == m_ctrl) |
| continue; |
| |
| rc = dsi_ctrl_cmd_transfer(ctrl->ctrl, msg, flags); |
| if (rc) { |
| pr_err("[%s] cmd transfer failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| rc = dsi_ctrl_cmd_tx_trigger(ctrl->ctrl, |
| DSI_CTRL_CMD_BROADCAST); |
| if (rc) { |
| pr_err("[%s] cmd trigger failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| |
| rc = dsi_ctrl_cmd_tx_trigger(m_ctrl->ctrl, |
| (DSI_CTRL_CMD_BROADCAST_MASTER | |
| DSI_CTRL_CMD_BROADCAST)); |
| if (rc) { |
| pr_err("[%s] cmd trigger failed for master, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_phy_sw_reset(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| |
| m_ctrl = &display->ctrl[display->cmd_master_idx]; |
| |
| rc = dsi_ctrl_phy_sw_reset(m_ctrl->ctrl); |
| if (rc) { |
| pr_err("[%s] failed to reset phy, rc=%d\n", display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_phy_sw_reset(ctrl->ctrl); |
| if (rc) { |
| pr_err("[%s] failed to reset phy, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| |
| error: |
| return rc; |
| } |
| |
| static int dsi_host_attach(struct mipi_dsi_host *host, |
| struct mipi_dsi_device *dsi) |
| { |
| return 0; |
| } |
| |
| static int dsi_host_detach(struct mipi_dsi_host *host, |
| struct mipi_dsi_device *dsi) |
| { |
| return 0; |
| } |
| |
| static ssize_t dsi_host_transfer(struct mipi_dsi_host *host, |
| const struct mipi_dsi_msg *msg) |
| { |
| struct dsi_display *display = to_dsi_display(host); |
| |
| int rc = 0; |
| |
| if (!host || !msg) { |
| pr_err("Invalid params\n"); |
| return 0; |
| } |
| |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_ALL_CLKS, DSI_CLK_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable all DSI clocks, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| rc = dsi_display_wake_up(display); |
| if (rc) { |
| pr_err("[%s] failed to wake up display, rc=%d\n", |
| display->name, rc); |
| goto error_disable_clks; |
| } |
| |
| rc = dsi_display_cmd_engine_enable(display); |
| if (rc) { |
| pr_err("[%s] failed to enable cmd engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_clks; |
| } |
| |
| if (display->ctrl_count > 1) { |
| rc = dsi_display_broadcast_cmd(display, msg); |
| if (rc) { |
| pr_err("[%s] cmd broadcast failed, rc=%d\n", |
| display->name, rc); |
| goto error_disable_cmd_engine; |
| } |
| } else { |
| rc = dsi_ctrl_cmd_transfer(display->ctrl[0].ctrl, msg, |
| DSI_CTRL_CMD_FIFO_STORE); |
| if (rc) { |
| pr_err("[%s] cmd transfer failed, rc=%d\n", |
| display->name, rc); |
| goto error_disable_cmd_engine; |
| } |
| } |
| error_disable_cmd_engine: |
| (void)dsi_display_cmd_engine_disable(display); |
| error_disable_clks: |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_ALL_CLKS, DSI_CLK_OFF); |
| if (rc) { |
| pr_err("[%s] failed to enable all DSI clocks, rc=%d\n", |
| display->name, rc); |
| } |
| error: |
| return rc; |
| } |
| |
| |
| static struct mipi_dsi_host_ops dsi_host_ops = { |
| .attach = dsi_host_attach, |
| .detach = dsi_host_detach, |
| .transfer = dsi_host_transfer, |
| }; |
| |
| static int dsi_display_mipi_host_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| struct mipi_dsi_host *host = &display->host; |
| |
| host->dev = &display->pdev->dev; |
| host->ops = &dsi_host_ops; |
| |
| rc = mipi_dsi_host_register(host); |
| if (rc) { |
| pr_err("[%s] failed to register mipi dsi host, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| error: |
| return rc; |
| } |
| static int dsi_display_mipi_host_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| struct mipi_dsi_host *host = &display->host; |
| |
| mipi_dsi_host_unregister(host); |
| |
| host->dev = NULL; |
| host->ops = NULL; |
| |
| return rc; |
| } |
| |
| static int dsi_display_clocks_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| struct dsi_clk_link_set *src = &display->clock_info.src_clks; |
| struct dsi_clk_link_set *mux = &display->clock_info.mux_clks; |
| struct dsi_clk_link_set *shadow = &display->clock_info.shadow_clks; |
| |
| if (src->byte_clk) { |
| devm_clk_put(&display->pdev->dev, src->byte_clk); |
| src->byte_clk = NULL; |
| } |
| |
| if (src->pixel_clk) { |
| devm_clk_put(&display->pdev->dev, src->pixel_clk); |
| src->pixel_clk = NULL; |
| } |
| |
| if (mux->byte_clk) { |
| devm_clk_put(&display->pdev->dev, mux->byte_clk); |
| mux->byte_clk = NULL; |
| } |
| |
| if (mux->pixel_clk) { |
| devm_clk_put(&display->pdev->dev, mux->pixel_clk); |
| mux->pixel_clk = NULL; |
| } |
| |
| if (shadow->byte_clk) { |
| devm_clk_put(&display->pdev->dev, shadow->byte_clk); |
| shadow->byte_clk = NULL; |
| } |
| |
| if (shadow->pixel_clk) { |
| devm_clk_put(&display->pdev->dev, shadow->pixel_clk); |
| shadow->pixel_clk = NULL; |
| } |
| |
| return rc; |
| } |
| |
| static int dsi_display_clocks_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| struct dsi_clk_link_set *src = &display->clock_info.src_clks; |
| struct dsi_clk_link_set *mux = &display->clock_info.mux_clks; |
| struct dsi_clk_link_set *shadow = &display->clock_info.shadow_clks; |
| |
| src->byte_clk = devm_clk_get(&display->pdev->dev, "src_byte_clk"); |
| if (IS_ERR_OR_NULL(src->byte_clk)) { |
| rc = PTR_ERR(src->byte_clk); |
| src->byte_clk = NULL; |
| pr_err("failed to get src_byte_clk, rc=%d\n", rc); |
| goto error; |
| } |
| |
| src->pixel_clk = devm_clk_get(&display->pdev->dev, "src_pixel_clk"); |
| if (IS_ERR_OR_NULL(src->pixel_clk)) { |
| rc = PTR_ERR(src->pixel_clk); |
| src->pixel_clk = NULL; |
| pr_err("failed to get src_pixel_clk, rc=%d\n", rc); |
| goto error; |
| } |
| |
| mux->byte_clk = devm_clk_get(&display->pdev->dev, "mux_byte_clk"); |
| if (IS_ERR_OR_NULL(mux->byte_clk)) { |
| rc = PTR_ERR(mux->byte_clk); |
| pr_err("failed to get mux_byte_clk, rc=%d\n", rc); |
| mux->byte_clk = NULL; |
| /* |
| * Skip getting rest of clocks since one failed. This is a |
| * non-critical failure since these clocks are requied only for |
| * dynamic refresh use cases. |
| */ |
| rc = 0; |
| goto done; |
| }; |
| |
| mux->pixel_clk = devm_clk_get(&display->pdev->dev, "mux_pixel_clk"); |
| if (IS_ERR_OR_NULL(mux->pixel_clk)) { |
| rc = PTR_ERR(mux->pixel_clk); |
| mux->pixel_clk = NULL; |
| pr_err("failed to get mux_pixel_clk, rc=%d\n", rc); |
| /* |
| * Skip getting rest of clocks since one failed. This is a |
| * non-critical failure since these clocks are requied only for |
| * dynamic refresh use cases. |
| */ |
| rc = 0; |
| goto done; |
| }; |
| |
| shadow->byte_clk = devm_clk_get(&display->pdev->dev, "shadow_byte_clk"); |
| if (IS_ERR_OR_NULL(shadow->byte_clk)) { |
| rc = PTR_ERR(shadow->byte_clk); |
| shadow->byte_clk = NULL; |
| pr_err("failed to get shadow_byte_clk, rc=%d\n", rc); |
| /* |
| * Skip getting rest of clocks since one failed. This is a |
| * non-critical failure since these clocks are requied only for |
| * dynamic refresh use cases. |
| */ |
| rc = 0; |
| goto done; |
| }; |
| |
| shadow->pixel_clk = devm_clk_get(&display->pdev->dev, |
| "shadow_pixel_clk"); |
| if (IS_ERR_OR_NULL(shadow->pixel_clk)) { |
| rc = PTR_ERR(shadow->pixel_clk); |
| shadow->pixel_clk = NULL; |
| pr_err("failed to get shadow_pixel_clk, rc=%d\n", rc); |
| /* |
| * Skip getting rest of clocks since one failed. This is a |
| * non-critical failure since these clocks are requied only for |
| * dynamic refresh use cases. |
| */ |
| rc = 0; |
| goto done; |
| }; |
| |
| done: |
| return 0; |
| error: |
| (void)dsi_display_clocks_deinit(display); |
| return rc; |
| } |
| |
| static int dsi_display_clk_ctrl_cb(void *priv, |
| struct dsi_clk_ctrl_info clk_state_info) |
| { |
| int rc = 0; |
| struct dsi_display *display = NULL; |
| void *clk_handle = NULL; |
| |
| if (!priv) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| display = priv; |
| |
| if (clk_state_info.client == DSI_CLK_REQ_MDP_CLIENT) { |
| clk_handle = display->mdp_clk_handle; |
| } else if (clk_state_info.client == DSI_CLK_REQ_DSI_CLIENT) { |
| clk_handle = display->dsi_clk_handle; |
| } else { |
| pr_err("invalid clk handle, return error\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * TODO: Wait for CMD_MDP_DONE interrupt if MDP client tries |
| * to turn off DSI clocks. |
| */ |
| rc = dsi_display_clk_ctrl(clk_handle, |
| clk_state_info.clk_type, clk_state_info.clk_state); |
| if (rc) { |
| pr_err("[%s] failed to %d DSI %d clocks, rc=%d\n", |
| display->name, clk_state_info.clk_state, |
| clk_state_info.clk_type, rc); |
| return rc; |
| } |
| return 0; |
| } |
| |
| int dsi_pre_clkoff_cb(void *priv, |
| enum dsi_clk_type clk, |
| enum dsi_clk_state new_state) |
| { |
| int rc = 0; |
| struct dsi_display *display = priv; |
| |
| if ((clk & DSI_LINK_CLK) && (new_state == DSI_CLK_OFF)) { |
| /* |
| * If ULPS feature is enabled, enter ULPS first. |
| */ |
| if (dsi_panel_initialized(display->panel) && |
| dsi_panel_ulps_feature_enabled(display->panel)) { |
| rc = dsi_display_set_ulps(display, true); |
| if (rc) { |
| pr_err("%s: failed enable ulps, rc = %d\n", |
| __func__, rc); |
| } |
| } |
| } |
| |
| if ((clk & DSI_CORE_CLK) && (new_state == DSI_CLK_OFF)) { |
| /* |
| * Enable DSI clamps only if entering idle power collapse. |
| */ |
| if (dsi_panel_initialized(display->panel) && |
| dsi_panel_ulps_feature_enabled(display->panel)) { |
| dsi_display_phy_idle_off(display); |
| rc = dsi_display_set_clamp(display, true); |
| if (rc) |
| pr_err("%s: Failed to enable dsi clamps. rc=%d\n", |
| __func__, rc); |
| } else { |
| /* Make sure that controller is not in ULPS state when |
| * the DSI link is not active. |
| */ |
| rc = dsi_display_set_ulps(display, false); |
| if (rc) |
| pr_err("%s: failed to disable ulps. rc=%d\n", |
| __func__, rc); |
| } |
| } |
| |
| return rc; |
| } |
| |
| int dsi_post_clkon_cb(void *priv, |
| enum dsi_clk_type clk, |
| enum dsi_clk_state curr_state) |
| { |
| int rc = 0; |
| struct dsi_display *display = priv; |
| bool mmss_clamp = false; |
| |
| if (clk & DSI_CORE_CLK) { |
| mmss_clamp = display->clamp_enabled; |
| /* |
| * controller setup is needed if coming out of idle |
| * power collapse with clamps enabled. |
| */ |
| if (mmss_clamp) |
| dsi_display_ctrl_setup(display); |
| |
| if (display->ulps_enabled && mmss_clamp) { |
| /* |
| * ULPS Entry Request. This is needed if the lanes were |
| * in ULPS prior to power collapse, since after |
| * power collapse and reset, the DSI controller resets |
| * back to idle state and not ULPS. This ulps entry |
| * request will transition the state of the DSI |
| * controller to ULPS which will match the state of the |
| * DSI phy. This needs to be done prior to disabling |
| * the DSI clamps. |
| * |
| * Also, reset the ulps flag so that ulps_config |
| * function would reconfigure the controller state to |
| * ULPS. |
| */ |
| display->ulps_enabled = false; |
| rc = dsi_display_set_ulps(display, true); |
| if (rc) { |
| pr_err("%s: Failed to enter ULPS. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| } |
| |
| rc = dsi_display_set_clamp(display, false); |
| if (rc) { |
| pr_err("%s: Failed to disable dsi clamps. rc=%d\n", |
| __func__, rc); |
| goto error; |
| } |
| |
| /* |
| * Phy setup is needed if coming out of idle |
| * power collapse with clamps enabled. |
| */ |
| if (display->phy_idle_power_off || mmss_clamp) |
| dsi_display_phy_idle_on(display, mmss_clamp); |
| } |
| if (clk & DSI_LINK_CLK) { |
| if (display->ulps_enabled) { |
| rc = dsi_display_set_ulps(display, false); |
| if (rc) { |
| pr_err("%s: failed to disable ulps, rc= %d\n", |
| __func__, rc); |
| goto error; |
| } |
| } |
| } |
| error: |
| return rc; |
| } |
| |
| int dsi_post_clkoff_cb(void *priv, |
| enum dsi_clk_type clk_type, |
| enum dsi_clk_state curr_state) |
| { |
| int rc = 0; |
| struct dsi_display *display = priv; |
| |
| if (!display) { |
| pr_err("%s: Invalid arg\n", __func__); |
| return -EINVAL; |
| } |
| |
| if ((clk_type & DSI_CORE_CLK) && |
| (curr_state == DSI_CLK_OFF)) { |
| |
| rc = dsi_display_phy_power_off(display); |
| if (rc) |
| pr_err("[%s] failed to power off PHY, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_ctrl_power_off(display); |
| if (rc) |
| pr_err("[%s] failed to power DSI vregs, rc=%d\n", |
| display->name, rc); |
| } |
| return rc; |
| } |
| |
| int dsi_pre_clkon_cb(void *priv, |
| enum dsi_clk_type clk_type, |
| enum dsi_clk_state new_state) |
| { |
| int rc = 0; |
| struct dsi_display *display = priv; |
| |
| if (!display) { |
| pr_err("%s: invalid input\n", __func__); |
| return -EINVAL; |
| } |
| |
| if ((clk_type & DSI_CORE_CLK) && (new_state == DSI_CLK_ON)) { |
| /* |
| * Enable DSI core power |
| * 1.> PANEL_PM are controlled as part of |
| * panel_power_ctrl. Needed not be handled here. |
| * 2.> CORE_PM are controlled by dsi clk manager. |
| * 3.> CTRL_PM need to be enabled/disabled |
| * only during unblank/blank. Their state should |
| * not be changed during static screen. |
| */ |
| |
| rc = dsi_display_ctrl_power_on(display); |
| if (rc) { |
| pr_err("[%s] failed to power on dsi controllers, rc=%d\n", |
| display->name, rc); |
| return rc; |
| } |
| |
| rc = dsi_display_phy_power_on(display); |
| if (rc) { |
| pr_err("[%s] failed to power on dsi phy, rc = %d\n", |
| display->name, rc); |
| return rc; |
| } |
| |
| pr_debug("%s: Enable DSI core power\n", __func__); |
| } |
| |
| return rc; |
| } |
| |
| static void __set_lane_map_v2(u8 *lane_map_v2, |
| enum dsi_phy_data_lanes lane0, |
| enum dsi_phy_data_lanes lane1, |
| enum dsi_phy_data_lanes lane2, |
| enum dsi_phy_data_lanes lane3) |
| { |
| lane_map_v2[DSI_LOGICAL_LANE_0] = lane0; |
| lane_map_v2[DSI_LOGICAL_LANE_1] = lane1; |
| lane_map_v2[DSI_LOGICAL_LANE_2] = lane2; |
| lane_map_v2[DSI_LOGICAL_LANE_3] = lane3; |
| } |
| |
| static int dsi_display_parse_lane_map(struct dsi_display *display) |
| { |
| int rc = 0, i = 0; |
| const char *data; |
| u8 temp[DSI_LANE_MAX - 1]; |
| |
| if (!display) { |
| pr_err("invalid params\n"); |
| return -EINVAL; |
| } |
| |
| /* lane-map-v2 supersedes lane-map-v1 setting */ |
| rc = of_property_read_u8_array(display->pdev->dev.of_node, |
| "qcom,lane-map-v2", temp, (DSI_LANE_MAX - 1)); |
| if (!rc) { |
| for (i = DSI_LOGICAL_LANE_0; i < (DSI_LANE_MAX - 1); i++) |
| display->lane_map.lane_map_v2[i] = BIT(temp[i]); |
| return 0; |
| } else if (rc != EINVAL) { |
| pr_warn("Incorrect mapping, configure default\n"); |
| goto set_default; |
| } |
| |
| /* lane-map older version, for DSI controller version < 2.0 */ |
| data = of_get_property(display->pdev->dev.of_node, |
| "qcom,lane-map", NULL); |
| if (!data) |
| goto set_default; |
| |
| if (!strcmp(data, "lane_map_3012")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_3012; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_1, |
| DSI_PHYSICAL_LANE_2, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_0); |
| } else if (!strcmp(data, "lane_map_2301")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_2301; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_2, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_1); |
| } else if (!strcmp(data, "lane_map_1230")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_1230; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_1, |
| DSI_PHYSICAL_LANE_2); |
| } else if (!strcmp(data, "lane_map_0321")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_0321; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_2, |
| DSI_PHYSICAL_LANE_1); |
| } else if (!strcmp(data, "lane_map_1032")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_1032; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_1, |
| DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_2); |
| } else if (!strcmp(data, "lane_map_2103")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_2103; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_2, |
| DSI_PHYSICAL_LANE_1, |
| DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_3); |
| } else if (!strcmp(data, "lane_map_3210")) { |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_3210; |
| __set_lane_map_v2(display->lane_map.lane_map_v2, |
| DSI_PHYSICAL_LANE_3, |
| DSI_PHYSICAL_LANE_2, |
| DSI_PHYSICAL_LANE_1, |
| DSI_PHYSICAL_LANE_0); |
| } else { |
| pr_warn("%s: invalid lane map %s specified. defaulting to lane_map0123\n", |
| __func__, data); |
| goto set_default; |
| } |
| return 0; |
| |
| set_default: |
| /* default lane mapping */ |
| __set_lane_map_v2(display->lane_map.lane_map_v2, DSI_PHYSICAL_LANE_0, |
| DSI_PHYSICAL_LANE_1, DSI_PHYSICAL_LANE_2, DSI_PHYSICAL_LANE_3); |
| display->lane_map.lane_map_v1 = DSI_LANE_MAP_0123; |
| return 0; |
| } |
| |
| static int dsi_display_parse_dt(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| u32 phy_count = 0; |
| struct device_node *of_node; |
| |
| /* Parse controllers */ |
| for (i = 0; i < MAX_DSI_CTRLS_PER_DISPLAY; i++) { |
| of_node = of_parse_phandle(display->pdev->dev.of_node, |
| "qcom,dsi-ctrl", i); |
| if (!of_node) { |
| if (!i) { |
| pr_err("No controllers present\n"); |
| return -ENODEV; |
| } |
| break; |
| } |
| |
| display->ctrl[i].ctrl_of_node = of_node; |
| display->ctrl_count++; |
| } |
| |
| /* Parse Phys */ |
| for (i = 0; i < MAX_DSI_CTRLS_PER_DISPLAY; i++) { |
| of_node = of_parse_phandle(display->pdev->dev.of_node, |
| "qcom,dsi-phy", i); |
| if (!of_node) { |
| if (!i) { |
| pr_err("No PHY devices present\n"); |
| rc = -ENODEV; |
| goto error; |
| } |
| break; |
| } |
| |
| display->ctrl[i].phy_of_node = of_node; |
| phy_count++; |
| } |
| |
| if (phy_count != display->ctrl_count) { |
| pr_err("Number of controllers does not match PHYs\n"); |
| rc = -ENODEV; |
| goto error; |
| } |
| |
| of_node = of_parse_phandle(display->pdev->dev.of_node, |
| "qcom,dsi-panel", 0); |
| if (!of_node) { |
| pr_err("No Panel device present\n"); |
| rc = -ENODEV; |
| goto error; |
| } else { |
| display->panel_of = of_node; |
| } |
| |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_res_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| ctrl->ctrl = dsi_ctrl_get(ctrl->ctrl_of_node); |
| if (IS_ERR_OR_NULL(ctrl->ctrl)) { |
| rc = PTR_ERR(ctrl->ctrl); |
| pr_err("failed to get dsi controller, rc=%d\n", rc); |
| ctrl->ctrl = NULL; |
| goto error_ctrl_put; |
| } |
| |
| ctrl->phy = dsi_phy_get(ctrl->phy_of_node); |
| if (IS_ERR_OR_NULL(ctrl->phy)) { |
| rc = PTR_ERR(ctrl->phy); |
| pr_err("failed to get phy controller, rc=%d\n", rc); |
| dsi_ctrl_put(ctrl->ctrl); |
| ctrl->phy = NULL; |
| goto error_ctrl_put; |
| } |
| } |
| |
| display->panel = dsi_panel_get(&display->pdev->dev, display->panel_of); |
| if (IS_ERR_OR_NULL(display->panel)) { |
| rc = PTR_ERR(display->panel); |
| pr_err("failed to get panel, rc=%d\n", rc); |
| display->panel = NULL; |
| goto error_ctrl_put; |
| } |
| |
| rc = dsi_display_parse_lane_map(display); |
| if (rc) { |
| pr_err("Lane map not found, rc=%d\n", rc); |
| goto error_ctrl_put; |
| } |
| |
| rc = dsi_display_clocks_init(display); |
| if (rc) { |
| pr_err("Failed to parse clock data, rc=%d\n", rc); |
| goto error_ctrl_put; |
| } |
| |
| return 0; |
| error_ctrl_put: |
| for (i = i - 1; i >= 0; i--) { |
| ctrl = &display->ctrl[i]; |
| dsi_ctrl_put(ctrl->ctrl); |
| dsi_phy_put(ctrl->phy); |
| } |
| return rc; |
| } |
| |
| static int dsi_display_res_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| rc = dsi_display_clocks_deinit(display); |
| if (rc) |
| pr_err("clocks deinit failed, rc=%d\n", rc); |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| dsi_phy_put(ctrl->phy); |
| dsi_ctrl_put(ctrl->ctrl); |
| } |
| |
| return rc; |
| } |
| |
| static int dsi_display_validate_mode_set(struct dsi_display *display, |
| struct dsi_display_mode *mode, |
| u32 flags) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| /* |
| * To set a mode: |
| * 1. Controllers should be turned off. |
| * 2. Link clocks should be off. |
| * 3. Phy should be disabled. |
| */ |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if ((ctrl->power_state > DSI_CTRL_POWER_VREG_ON) || |
| (ctrl->phy_enabled)) { |
| rc = -EINVAL; |
| goto error; |
| } |
| } |
| |
| error: |
| return rc; |
| } |
| |
| static bool dsi_display_is_seamless_dfps_possible( |
| const struct dsi_display *display, |
| const struct dsi_display_mode *tgt, |
| const enum dsi_dfps_type dfps_type) |
| { |
| struct dsi_display_mode *cur; |
| |
| if (!display || !tgt) { |
| pr_err("Invalid params\n"); |
| return false; |
| } |
| |
| cur = &display->panel->mode; |
| |
| if (cur->timing.h_active != tgt->timing.h_active) { |
| pr_debug("timing.h_active differs %d %d\n", |
| cur->timing.h_active, tgt->timing.h_active); |
| return false; |
| } |
| |
| if (cur->timing.h_back_porch != tgt->timing.h_back_porch) { |
| pr_debug("timing.h_back_porch differs %d %d\n", |
| cur->timing.h_back_porch, |
| tgt->timing.h_back_porch); |
| return false; |
| } |
| |
| if (cur->timing.h_sync_width != tgt->timing.h_sync_width) { |
| pr_debug("timing.h_sync_width differs %d %d\n", |
| cur->timing.h_sync_width, |
| tgt->timing.h_sync_width); |
| return false; |
| } |
| |
| if (cur->timing.h_front_porch != tgt->timing.h_front_porch) { |
| pr_debug("timing.h_front_porch differs %d %d\n", |
| cur->timing.h_front_porch, |
| tgt->timing.h_front_porch); |
| if (dfps_type != DSI_DFPS_IMMEDIATE_HFP) |
| return false; |
| } |
| |
| if (cur->timing.h_skew != tgt->timing.h_skew) { |
| pr_debug("timing.h_skew differs %d %d\n", |
| cur->timing.h_skew, |
| tgt->timing.h_skew); |
| return false; |
| } |
| |
| /* skip polarity comparison */ |
| |
| if (cur->timing.v_active != tgt->timing.v_active) { |
| pr_debug("timing.v_active differs %d %d\n", |
| cur->timing.v_active, |
| tgt->timing.v_active); |
| return false; |
| } |
| |
| if (cur->timing.v_back_porch != tgt->timing.v_back_porch) { |
| pr_debug("timing.v_back_porch differs %d %d\n", |
| cur->timing.v_back_porch, |
| tgt->timing.v_back_porch); |
| return false; |
| } |
| |
| if (cur->timing.v_sync_width != tgt->timing.v_sync_width) { |
| pr_debug("timing.v_sync_width differs %d %d\n", |
| cur->timing.v_sync_width, |
| tgt->timing.v_sync_width); |
| return false; |
| } |
| |
| if (cur->timing.v_front_porch != tgt->timing.v_front_porch) { |
| pr_debug("timing.v_front_porch differs %d %d\n", |
| cur->timing.v_front_porch, |
| tgt->timing.v_front_porch); |
| if (dfps_type != DSI_DFPS_IMMEDIATE_VFP) |
| return false; |
| } |
| |
| /* skip polarity comparison */ |
| |
| if (cur->timing.refresh_rate == tgt->timing.refresh_rate) { |
| pr_debug("timing.refresh_rate identical %d %d\n", |
| cur->timing.refresh_rate, |
| tgt->timing.refresh_rate); |
| return false; |
| } |
| |
| if (cur->pixel_clk_khz != tgt->pixel_clk_khz) |
| pr_debug("pixel_clk_khz differs %d %d\n", |
| cur->pixel_clk_khz, tgt->pixel_clk_khz); |
| |
| if (cur->panel_mode != tgt->panel_mode) { |
| pr_debug("panel_mode differs %d %d\n", |
| cur->panel_mode, tgt->panel_mode); |
| return false; |
| } |
| |
| if (cur->flags != tgt->flags) |
| pr_debug("flags differs %d %d\n", cur->flags, tgt->flags); |
| |
| return true; |
| } |
| |
| static int dsi_display_dfps_update(struct dsi_display *display, |
| struct dsi_display_mode *dsi_mode) |
| { |
| struct dsi_mode_info *timing; |
| struct dsi_display_ctrl *m_ctrl, *ctrl; |
| struct dsi_display_mode *panel_mode; |
| struct dsi_dfps_capabilities dfps_caps; |
| int rc = 0; |
| int i; |
| |
| if (!display || !dsi_mode) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| timing = &dsi_mode->timing; |
| |
| dsi_panel_get_dfps_caps(display->panel, &dfps_caps); |
| if (!dfps_caps.dfps_support) { |
| pr_err("dfps not supported\n"); |
| return -ENOTSUPP; |
| } |
| |
| if (dfps_caps.type == DSI_DFPS_IMMEDIATE_CLK) { |
| pr_err("dfps clock method not supported\n"); |
| return -ENOTSUPP; |
| } |
| |
| /* For split DSI, update the clock master first */ |
| |
| pr_debug("configuring seamless dynamic fps\n\n"); |
| |
| m_ctrl = &display->ctrl[display->clk_master_idx]; |
| rc = dsi_ctrl_async_timing_update(m_ctrl->ctrl, timing); |
| if (rc) { |
| pr_err("[%s] failed to dfps update host_%d, rc=%d\n", |
| display->name, i, rc); |
| goto error; |
| } |
| |
| /* Update the rest of the controllers */ |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| if (!ctrl->ctrl || (ctrl == m_ctrl)) |
| continue; |
| |
| rc = dsi_ctrl_async_timing_update(ctrl->ctrl, timing); |
| if (rc) { |
| pr_err("[%s] failed to dfps update host_%d, rc=%d\n", |
| display->name, i, rc); |
| goto error; |
| } |
| } |
| |
| panel_mode = &display->panel->mode; |
| memcpy(panel_mode, dsi_mode, sizeof(*panel_mode)); |
| |
| error: |
| return rc; |
| } |
| |
| static int dsi_display_dfps_calc_front_porch( |
| u64 clk_hz, |
| u32 new_fps, |
| u32 a_total, |
| u32 b_total, |
| u32 b_fp, |
| u32 *b_fp_out) |
| { |
| s32 b_fp_new; |
| |
| if (!b_fp_out) { |
| pr_err("Invalid params"); |
| return -EINVAL; |
| } |
| |
| if (!a_total || !new_fps) { |
| pr_err("Invalid pixel total or new fps in mode request\n"); |
| return -EINVAL; |
| } |
| |
| /** |
| * Keep clock, other porches constant, use new fps, calc front porch |
| * clk = (hor * ver * fps) |
| * hfront = clk / (vtotal * fps)) - hactive - hback - hsync |
| */ |
| b_fp_new = (clk_hz / (a_total * new_fps)) - (b_total - b_fp); |
| |
| pr_debug("clk %llu fps %u a %u b %u b_fp %u new_fp %d\n", |
| clk_hz, new_fps, a_total, b_total, b_fp, b_fp_new); |
| |
| if (b_fp_new < 0) { |
| pr_err("Invalid new_hfp calcluated%d\n", b_fp_new); |
| return -EINVAL; |
| } |
| |
| /** |
| * TODO: To differentiate from clock method when communicating to the |
| * other components, perhaps we should set clk here to original value |
| */ |
| *b_fp_out = b_fp_new; |
| |
| return 0; |
| } |
| |
| static int dsi_display_get_dfps_timing(struct dsi_display *display, |
| struct dsi_display_mode *adj_mode) |
| { |
| struct dsi_dfps_capabilities dfps_caps; |
| struct dsi_display_mode per_ctrl_mode; |
| struct dsi_mode_info *timing; |
| struct dsi_ctrl *m_ctrl; |
| u64 clk_hz; |
| |
| int rc = 0; |
| |
| if (!display || !adj_mode) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| m_ctrl = display->ctrl[display->clk_master_idx].ctrl; |
| |
| dsi_panel_get_dfps_caps(display->panel, &dfps_caps); |
| if (!dfps_caps.dfps_support) { |
| pr_err("dfps not supported by panel\n"); |
| return -EINVAL; |
| } |
| |
| per_ctrl_mode = *adj_mode; |
| adjust_timing_by_ctrl_count(display, &per_ctrl_mode); |
| |
| if (!dsi_display_is_seamless_dfps_possible(display, |
| &per_ctrl_mode, dfps_caps.type)) { |
| pr_err("seamless dynamic fps not supported for mode\n"); |
| return -EINVAL; |
| } |
| |
| /* TODO: Remove this direct reference to the dsi_ctrl */ |
| clk_hz = m_ctrl->clk_freq.pix_clk_rate; |
| timing = &per_ctrl_mode.timing; |
| |
| switch (dfps_caps.type) { |
| case DSI_DFPS_IMMEDIATE_VFP: |
| rc = dsi_display_dfps_calc_front_porch( |
| clk_hz, |
| timing->refresh_rate, |
| DSI_H_TOTAL(timing), |
| DSI_V_TOTAL(timing), |
| timing->v_front_porch, |
| &adj_mode->timing.v_front_porch); |
| break; |
| |
| case DSI_DFPS_IMMEDIATE_HFP: |
| rc = dsi_display_dfps_calc_front_porch( |
| clk_hz, |
| timing->refresh_rate, |
| DSI_V_TOTAL(timing), |
| DSI_H_TOTAL(timing), |
| timing->h_front_porch, |
| &adj_mode->timing.h_front_porch); |
| if (!rc) |
| adj_mode->timing.h_front_porch *= display->ctrl_count; |
| break; |
| |
| default: |
| pr_err("Unsupported DFPS mode %d\n", dfps_caps.type); |
| rc = -ENOTSUPP; |
| } |
| |
| return rc; |
| } |
| |
| static bool dsi_display_validate_mode_seamless(struct dsi_display *display, |
| struct dsi_display_mode *adj_mode) |
| { |
| int rc = 0; |
| |
| if (!display || !adj_mode) { |
| pr_err("Invalid params\n"); |
| return false; |
| } |
| |
| /* Currently the only seamless transition is dynamic fps */ |
| rc = dsi_display_get_dfps_timing(display, adj_mode); |
| if (rc) { |
| pr_debug("Dynamic FPS not supported for seamless\n"); |
| } else { |
| pr_debug("Mode switch is seamless Dynamic FPS\n"); |
| adj_mode->flags |= DSI_MODE_FLAG_DFPS | |
| DSI_MODE_FLAG_VBLANK_PRE_MODESET; |
| } |
| |
| return rc; |
| } |
| |
| static int dsi_display_set_mode_sub(struct dsi_display *display, |
| struct dsi_display_mode *mode, |
| u32 flags) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| rc = dsi_panel_get_host_cfg_for_mode(display->panel, |
| mode, |
| &display->config); |
| if (rc) { |
| pr_err("[%s] failed to get host config for mode, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| memcpy(&display->config.lane_map, &display->lane_map, |
| sizeof(display->lane_map)); |
| |
| if (mode->flags & DSI_MODE_FLAG_DFPS) { |
| rc = dsi_display_dfps_update(display, mode); |
| if (rc) { |
| pr_err("[%s]DSI dfps update failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_update_host_config(ctrl->ctrl, &display->config, |
| mode->flags, display->dsi_clk_handle); |
| if (rc) { |
| pr_err("[%s] failed to update ctrl config, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| error: |
| return rc; |
| } |
| |
| /** |
| * _dsi_display_dev_init - initializes the display device |
| * Initialization will acquire references to the resources required for the |
| * display hardware to function. |
| * @display: Handle to the display |
| * Returns: Zero on success |
| */ |
| static int _dsi_display_dev_init(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("invalid display\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_display_parse_dt(display); |
| if (rc) { |
| pr_err("[%s] failed to parse dt, rc=%d\n", display->name, rc); |
| goto error; |
| } |
| |
| rc = dsi_display_res_init(display); |
| if (rc) { |
| pr_err("[%s] failed to initialize resources, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| /** |
| * _dsi_display_dev_deinit - deinitializes the display device |
| * All the resources acquired during device init will be released. |
| * @display: Handle to the display |
| * Returns: Zero on success |
| */ |
| static int _dsi_display_dev_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("invalid display\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_display_res_deinit(display); |
| if (rc) |
| pr_err("[%s] failed to deinitialize resource, rc=%d\n", |
| display->name, rc); |
| |
| mutex_unlock(&display->display_lock); |
| |
| return rc; |
| } |
| |
| /** |
| * dsi_display_bind - bind dsi device with controlling device |
| * @dev: Pointer to base of platform device |
| * @master: Pointer to container of drm device |
| * @data: Pointer to private data |
| * Returns: Zero on success |
| */ |
| static int dsi_display_bind(struct device *dev, |
| struct device *master, |
| void *data) |
| { |
| struct dsi_display_ctrl *display_ctrl; |
| struct drm_device *drm; |
| struct dsi_display *display; |
| struct dsi_clk_info info; |
| struct clk_ctrl_cb clk_cb; |
| void *handle = NULL; |
| struct platform_device *pdev = to_platform_device(dev); |
| char *client1 = "dsi_clk_client"; |
| char *client2 = "mdp_event_client"; |
| int i, rc = 0; |
| |
| if (!dev || !pdev || !master) { |
| pr_err("invalid param(s), dev %pK, pdev %pK, master %pK\n", |
| dev, pdev, master); |
| return -EINVAL; |
| } |
| |
| drm = dev_get_drvdata(master); |
| display = platform_get_drvdata(pdev); |
| if (!drm || !display) { |
| pr_err("invalid param(s), drm %pK, display %pK\n", |
| drm, display); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_display_debugfs_init(display); |
| if (rc) { |
| pr_err("[%s] debugfs init failed, rc=%d\n", display->name, rc); |
| goto error; |
| } |
| |
| memset(&info, 0x0, sizeof(info)); |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| display_ctrl = &display->ctrl[i]; |
| |
| rc = dsi_ctrl_drv_init(display_ctrl->ctrl, display->root); |
| if (rc) { |
| pr_err("[%s] failed to initialize ctrl[%d], rc=%d\n", |
| display->name, i, rc); |
| goto error_ctrl_deinit; |
| } |
| |
| rc = dsi_phy_drv_init(display_ctrl->phy); |
| if (rc) { |
| pr_err("[%s] Failed to initialize phy[%d], rc=%d\n", |
| display->name, i, rc); |
| (void)dsi_ctrl_drv_deinit(display_ctrl->ctrl); |
| goto error_ctrl_deinit; |
| } |
| |
| memcpy(&info.c_clks[i], &display_ctrl->ctrl->clk_info.core_clks, |
| sizeof(struct dsi_core_clk_info)); |
| memcpy(&info.l_clks[i], &display_ctrl->ctrl->clk_info.link_clks, |
| sizeof(struct dsi_link_clk_info)); |
| info.bus_handle[i] = |
| display_ctrl->ctrl->axi_bus_info.bus_handle; |
| } |
| |
| info.pre_clkoff_cb = dsi_pre_clkoff_cb; |
| info.pre_clkon_cb = dsi_pre_clkon_cb; |
| info.post_clkoff_cb = dsi_post_clkoff_cb; |
| info.post_clkon_cb = dsi_post_clkon_cb; |
| info.priv_data = display; |
| info.master_ndx = display->clk_master_idx; |
| info.dsi_ctrl_count = display->ctrl_count; |
| snprintf(info.name, MAX_STRING_LEN, |
| "DSI_MNGR-%s", display->name); |
| |
| display->clk_mngr = dsi_display_clk_mngr_register(&info); |
| if (IS_ERR_OR_NULL(display->clk_mngr)) { |
| rc = PTR_ERR(display->clk_mngr); |
| display->clk_mngr = NULL; |
| pr_err("dsi clock registration failed, rc = %d\n", rc); |
| goto error_ctrl_deinit; |
| } |
| |
| handle = dsi_register_clk_handle(display->clk_mngr, client1); |
| if (IS_ERR_OR_NULL(handle)) { |
| rc = PTR_ERR(handle); |
| pr_err("failed to register %s client, rc = %d\n", |
| client1, rc); |
| goto error_clk_deinit; |
| } else { |
| display->dsi_clk_handle = handle; |
| } |
| |
| handle = dsi_register_clk_handle(display->clk_mngr, client2); |
| if (IS_ERR_OR_NULL(handle)) { |
| rc = PTR_ERR(handle); |
| pr_err("failed to register %s client, rc = %d\n", |
| client2, rc); |
| goto error_clk_client_deinit; |
| } else { |
| display->mdp_clk_handle = handle; |
| } |
| |
| clk_cb.priv = display; |
| clk_cb.dsi_clk_cb = dsi_display_clk_ctrl_cb; |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| display_ctrl = &display->ctrl[i]; |
| |
| rc = dsi_ctrl_clk_cb_register(display_ctrl->ctrl, &clk_cb); |
| if (rc) { |
| pr_err("[%s] failed to register ctrl clk_cb[%d], rc=%d\n", |
| display->name, i, rc); |
| goto error_ctrl_deinit; |
| } |
| |
| rc = dsi_phy_clk_cb_register(display_ctrl->phy, &clk_cb); |
| if (rc) { |
| pr_err("[%s] failed to register phy clk_cb[%d], rc=%d\n", |
| display->name, i, rc); |
| goto error_ctrl_deinit; |
| } |
| } |
| |
| rc = dsi_display_mipi_host_init(display); |
| if (rc) { |
| pr_err("[%s] failed to initialize mipi host, rc=%d\n", |
| display->name, rc); |
| goto error_ctrl_deinit; |
| } |
| |
| rc = dsi_panel_drv_init(display->panel, &display->host); |
| if (rc) { |
| if (rc != -EPROBE_DEFER) |
| pr_err("[%s] failed to initialize panel driver, rc=%d\n", |
| display->name, rc); |
| goto error_host_deinit; |
| } |
| |
| rc = dsi_panel_get_mode_count(display->panel, &display->num_of_modes); |
| if (rc) { |
| pr_err("[%s] failed to get mode count, rc=%d\n", |
| display->name, rc); |
| goto error_panel_deinit; |
| } |
| |
| display->drm_dev = drm; |
| goto error; |
| |
| error_panel_deinit: |
| (void)dsi_panel_drv_deinit(display->panel); |
| error_host_deinit: |
| (void)dsi_display_mipi_host_deinit(display); |
| error_clk_client_deinit: |
| (void)dsi_deregister_clk_handle(display->dsi_clk_handle); |
| error_clk_deinit: |
| (void)dsi_display_clk_mngr_deregister(display->clk_mngr); |
| error_ctrl_deinit: |
| for (i = i - 1; i >= 0; i--) { |
| display_ctrl = &display->ctrl[i]; |
| (void)dsi_phy_drv_deinit(display_ctrl->phy); |
| (void)dsi_ctrl_drv_deinit(display_ctrl->ctrl); |
| } |
| (void)dsi_display_debugfs_deinit(display); |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| /** |
| * dsi_display_unbind - unbind dsi from controlling device |
| * @dev: Pointer to base of platform device |
| * @master: Pointer to container of drm device |
| * @data: Pointer to private data |
| */ |
| static void dsi_display_unbind(struct device *dev, |
| struct device *master, void *data) |
| { |
| struct dsi_display_ctrl *display_ctrl; |
| struct dsi_display *display; |
| struct platform_device *pdev = to_platform_device(dev); |
| int i, rc = 0; |
| |
| if (!dev || !pdev) { |
| pr_err("invalid param(s)\n"); |
| return; |
| } |
| |
| display = platform_get_drvdata(pdev); |
| if (!display) { |
| pr_err("invalid display\n"); |
| return; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_drv_deinit(display->panel); |
| if (rc) |
| pr_err("[%s] failed to deinit panel driver, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_mipi_host_deinit(display); |
| if (rc) |
| pr_err("[%s] failed to deinit mipi hosts, rc=%d\n", |
| display->name, |
| rc); |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| display_ctrl = &display->ctrl[i]; |
| |
| rc = dsi_phy_drv_deinit(display_ctrl->phy); |
| if (rc) |
| pr_err("[%s] failed to deinit phy%d driver, rc=%d\n", |
| display->name, i, rc); |
| |
| rc = dsi_ctrl_drv_deinit(display_ctrl->ctrl); |
| if (rc) |
| pr_err("[%s] failed to deinit ctrl%d driver, rc=%d\n", |
| display->name, i, rc); |
| } |
| (void)dsi_display_debugfs_deinit(display); |
| |
| mutex_unlock(&display->display_lock); |
| } |
| |
| static const struct component_ops dsi_display_comp_ops = { |
| .bind = dsi_display_bind, |
| .unbind = dsi_display_unbind, |
| }; |
| |
| static struct platform_driver dsi_display_driver = { |
| .probe = dsi_display_dev_probe, |
| .remove = dsi_display_dev_remove, |
| .driver = { |
| .name = "msm-dsi-display", |
| .of_match_table = dsi_display_dt_match, |
| }, |
| }; |
| |
| int dsi_display_dev_probe(struct platform_device *pdev) |
| { |
| int rc = 0; |
| struct dsi_display *display; |
| |
| if (!pdev || !pdev->dev.of_node) { |
| pr_err("pdev not found\n"); |
| return -ENODEV; |
| } |
| |
| display = devm_kzalloc(&pdev->dev, sizeof(*display), GFP_KERNEL); |
| if (!display) |
| return -ENOMEM; |
| |
| display->name = of_get_property(pdev->dev.of_node, "label", NULL); |
| |
| display->is_active = of_property_read_bool(pdev->dev.of_node, |
| "qcom,dsi-display-active"); |
| |
| display->display_type = of_get_property(pdev->dev.of_node, |
| "qcom,display-type", NULL); |
| if (!display->display_type) |
| display->display_type = "unknown"; |
| |
| mutex_init(&display->display_lock); |
| display->pdev = pdev; |
| platform_set_drvdata(pdev, display); |
| mutex_lock(&dsi_display_list_lock); |
| list_add(&display->list, &dsi_display_list); |
| mutex_unlock(&dsi_display_list_lock); |
| |
| if (display->is_active) { |
| main_display = display; |
| rc = _dsi_display_dev_init(display); |
| if (rc) { |
| pr_err("device init failed, rc=%d\n", rc); |
| return rc; |
| } |
| |
| rc = component_add(&pdev->dev, &dsi_display_comp_ops); |
| if (rc) |
| pr_err("component add failed, rc=%d\n", rc); |
| } |
| return rc; |
| } |
| |
| int dsi_display_dev_remove(struct platform_device *pdev) |
| { |
| int rc = 0; |
| struct dsi_display *display; |
| struct dsi_display *pos, *tmp; |
| |
| if (!pdev) { |
| pr_err("Invalid device\n"); |
| return -EINVAL; |
| } |
| |
| display = platform_get_drvdata(pdev); |
| |
| (void)_dsi_display_dev_deinit(display); |
| |
| mutex_lock(&dsi_display_list_lock); |
| list_for_each_entry_safe(pos, tmp, &dsi_display_list, list) { |
| if (pos == display) { |
| list_del(&display->list); |
| break; |
| } |
| } |
| mutex_unlock(&dsi_display_list_lock); |
| |
| platform_set_drvdata(pdev, NULL); |
| devm_kfree(&pdev->dev, display); |
| return rc; |
| } |
| |
| int dsi_display_get_num_of_displays(void) |
| { |
| int count = 0; |
| struct dsi_display *display; |
| |
| mutex_lock(&dsi_display_list_lock); |
| |
| list_for_each_entry(display, &dsi_display_list, list) { |
| count++; |
| } |
| |
| mutex_unlock(&dsi_display_list_lock); |
| return count; |
| } |
| |
| int dsi_display_get_active_displays(void **display_array, u32 max_display_count) |
| { |
| struct dsi_display *pos; |
| int i = 0; |
| |
| if (!display_array || !max_display_count) { |
| if (!display_array) |
| pr_err("invalid params\n"); |
| return 0; |
| } |
| |
| mutex_lock(&dsi_display_list_lock); |
| |
| list_for_each_entry(pos, &dsi_display_list, list) { |
| if (i >= max_display_count) { |
| pr_err("capping display count to %d\n", i); |
| break; |
| } |
| if (pos->is_active) |
| display_array[i++] = pos; |
| } |
| |
| mutex_unlock(&dsi_display_list_lock); |
| return i; |
| } |
| |
| struct dsi_display *dsi_display_get_display_by_name(const char *name) |
| { |
| struct dsi_display *display = NULL, *pos; |
| |
| mutex_lock(&dsi_display_list_lock); |
| |
| list_for_each_entry(pos, &dsi_display_list, list) { |
| if (!strcmp(name, pos->name)) |
| display = pos; |
| } |
| |
| mutex_unlock(&dsi_display_list_lock); |
| |
| return display; |
| } |
| |
| void dsi_display_set_active_state(struct dsi_display *display, bool is_active) |
| { |
| mutex_lock(&display->display_lock); |
| display->is_active = is_active; |
| mutex_unlock(&display->display_lock); |
| } |
| |
| int dsi_display_drm_bridge_init(struct dsi_display *display, |
| struct drm_encoder *enc) |
| { |
| int rc = 0; |
| struct dsi_bridge *bridge; |
| struct msm_drm_private *priv = NULL; |
| |
| if (!display || !display->drm_dev || !enc) { |
| pr_err("invalid param(s)\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| priv = display->drm_dev->dev_private; |
| |
| if (!priv) { |
| pr_err("Private data is not present\n"); |
| rc = -EINVAL; |
| goto error; |
| } |
| |
| if (display->bridge) { |
| pr_err("display is already initialize\n"); |
| goto error; |
| } |
| |
| bridge = dsi_drm_bridge_init(display, display->drm_dev, enc); |
| if (IS_ERR_OR_NULL(bridge)) { |
| rc = PTR_ERR(bridge); |
| pr_err("[%s] brige init failed, %d\n", display->name, rc); |
| goto error; |
| } |
| |
| display->bridge = bridge; |
| priv->bridges[priv->num_bridges++] = &bridge->base; |
| |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_drm_bridge_deinit(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| dsi_drm_bridge_cleanup(display->bridge); |
| display->bridge = NULL; |
| |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_get_info(struct msm_display_info *info, void *disp) |
| { |
| struct dsi_display *display; |
| struct dsi_panel_phy_props phy_props; |
| int i, rc; |
| |
| if (!info || !disp) { |
| pr_err("invalid params\n"); |
| return -EINVAL; |
| } |
| display = disp; |
| |
| mutex_lock(&display->display_lock); |
| rc = dsi_panel_get_phy_props(display->panel, &phy_props); |
| if (rc) { |
| pr_err("[%s] failed to get panel phy props, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| info->intf_type = DRM_MODE_CONNECTOR_DSI; |
| |
| info->num_of_h_tiles = display->ctrl_count; |
| for (i = 0; i < info->num_of_h_tiles; i++) |
| info->h_tile_instance[i] = display->ctrl[i].ctrl->index; |
| |
| info->is_connected = true; |
| info->width_mm = phy_props.panel_width_mm; |
| info->height_mm = phy_props.panel_height_mm; |
| info->max_width = 1920; |
| info->max_height = 1080; |
| info->compression = MSM_DISPLAY_COMPRESS_NONE; |
| |
| switch (display->panel->mode.panel_mode) { |
| case DSI_OP_VIDEO_MODE: |
| info->capabilities |= MSM_DISPLAY_CAP_VID_MODE; |
| break; |
| case DSI_OP_CMD_MODE: |
| info->capabilities |= MSM_DISPLAY_CAP_CMD_MODE; |
| break; |
| default: |
| pr_err("unknwown dsi panel mode %d\n", |
| display->panel->mode.panel_mode); |
| break; |
| } |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_get_modes(struct dsi_display *display, |
| struct dsi_display_mode *modes, |
| u32 *count) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_dfps_capabilities dfps_caps; |
| int num_dfps_rates; |
| |
| if (!display || !count) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_get_dfps_caps(display->panel, &dfps_caps); |
| if (rc) { |
| pr_err("[%s] failed to get dfps caps from panel\n", |
| display->name); |
| goto error; |
| } |
| |
| num_dfps_rates = !dfps_caps.dfps_support ? 1 : |
| dfps_caps.max_refresh_rate - |
| dfps_caps.min_refresh_rate + 1; |
| |
| if (!modes) { |
| /* Inflate num_of_modes by fps in dfps */ |
| *count = display->num_of_modes * num_dfps_rates; |
| goto error; |
| } |
| |
| for (i = 0; i < *count; i++) { |
| /* Insert the dfps "sub-modes" between main panel modes */ |
| int panel_mode_idx = i / num_dfps_rates; |
| |
| rc = dsi_panel_get_mode(display->panel, panel_mode_idx, modes); |
| if (rc) { |
| pr_err("[%s] failed to get mode from panel\n", |
| display->name); |
| goto error; |
| } |
| |
| if (dfps_caps.dfps_support) { |
| modes->timing.refresh_rate = dfps_caps.min_refresh_rate |
| + (i % num_dfps_rates); |
| modes->pixel_clk_khz = (DSI_H_TOTAL(&modes->timing) * |
| DSI_V_TOTAL(&modes->timing) * |
| modes->timing.refresh_rate) / 1000; |
| } |
| |
| if (display->ctrl_count > 1) { /* TODO: remove if */ |
| modes->timing.h_active *= display->ctrl_count; |
| modes->timing.h_front_porch *= display->ctrl_count; |
| modes->timing.h_sync_width *= display->ctrl_count; |
| modes->timing.h_back_porch *= display->ctrl_count; |
| modes->timing.h_skew *= display->ctrl_count; |
| modes->pixel_clk_khz *= display->ctrl_count; |
| } |
| |
| modes++; |
| } |
| |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_validate_mode(struct dsi_display *display, |
| struct dsi_display_mode *mode, |
| u32 flags) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| struct dsi_display_mode adj_mode; |
| |
| if (!display || !mode) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| adj_mode = *mode; |
| adjust_timing_by_ctrl_count(display, &adj_mode); |
| |
| rc = dsi_panel_validate_mode(display->panel, &adj_mode); |
| if (rc) { |
| pr_err("[%s] panel mode validation failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_validate_timing(ctrl->ctrl, &adj_mode.timing); |
| if (rc) { |
| pr_err("[%s] ctrl mode validation failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| rc = dsi_phy_validate_mode(ctrl->phy, &adj_mode.timing); |
| if (rc) { |
| pr_err("[%s] phy mode validation failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| |
| if ((flags & DSI_VALIDATE_FLAG_ALLOW_ADJUST) && |
| (mode->flags & DSI_MODE_FLAG_SEAMLESS)) { |
| rc = dsi_display_validate_mode_seamless(display, mode); |
| if (rc) { |
| pr_err("[%s] seamless not possible rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| } |
| |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_set_mode(struct dsi_display *display, |
| struct dsi_display_mode *mode, |
| u32 flags) |
| { |
| int rc = 0; |
| struct dsi_display_mode adj_mode; |
| |
| if (!display || !mode) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| adj_mode = *mode; |
| adjust_timing_by_ctrl_count(display, &adj_mode); |
| |
| rc = dsi_display_validate_mode_set(display, &adj_mode, flags); |
| if (rc) { |
| pr_err("[%s] mode cannot be set\n", display->name); |
| goto error; |
| } |
| |
| rc = dsi_display_set_mode_sub(display, &adj_mode, flags); |
| if (rc) { |
| pr_err("[%s] failed to set mode\n", display->name); |
| goto error; |
| } |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_set_tpg_state(struct dsi_display *display, bool enable) |
| { |
| int rc = 0; |
| int i; |
| struct dsi_display_ctrl *ctrl; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < display->ctrl_count; i++) { |
| ctrl = &display->ctrl[i]; |
| rc = dsi_ctrl_set_tpg_state(ctrl->ctrl, enable); |
| if (rc) { |
| pr_err("[%s] failed to set tpg state for host_%d\n", |
| display->name, i); |
| goto error; |
| } |
| } |
| |
| display->is_tpg_enabled = enable; |
| error: |
| return rc; |
| } |
| |
| int dsi_display_prepare(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_pre_prepare(display->panel); |
| if (rc) { |
| pr_err("[%s] panel pre-prepare failed, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_CORE_CLK, DSI_CLK_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI core clocks, rc=%d\n", |
| display->name, rc); |
| goto error_panel_post_unprep; |
| } |
| |
| rc = dsi_display_phy_sw_reset(display); |
| if (rc) { |
| pr_err("[%s] failed to reset phy, rc=%d\n", display->name, rc); |
| goto error_ctrl_clk_off; |
| } |
| |
| rc = dsi_display_phy_enable(display); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI PHY, rc=%d\n", |
| display->name, rc); |
| goto error_ctrl_clk_off; |
| } |
| |
| rc = dsi_display_ctrl_init(display); |
| if (rc) { |
| pr_err("[%s] failed to setup DSI controller, rc=%d\n", |
| display->name, rc); |
| goto error_phy_disable; |
| } |
| |
| rc = dsi_display_phy_reset_config(display, true); |
| if (rc) { |
| pr_err("[%s] failed to setup DSI controller, rc=%d\n", |
| display->name, rc); |
| goto error_ctrl_deinit; |
| } |
| |
| rc = dsi_display_set_clk_src(display); |
| if (rc) { |
| pr_err("[%s] failed to set DSI link clock source, rc=%d\n", |
| display->name, rc); |
| goto error_phy_reset_off; |
| } |
| |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_LINK_CLK, DSI_CLK_ON); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI link clocks, rc=%d\n", |
| display->name, rc); |
| goto error_phy_reset_off; |
| } |
| |
| rc = dsi_display_ctrl_host_enable(display); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI host, rc=%d\n", |
| display->name, rc); |
| goto error_ctrl_link_off; |
| } |
| |
| rc = dsi_panel_prepare(display->panel); |
| if (rc) { |
| pr_err("[%s] panel prepare failed, rc=%d\n", display->name, rc); |
| goto error_host_engine_off; |
| } |
| |
| goto error; |
| |
| error_host_engine_off: |
| (void)dsi_display_ctrl_host_disable(display); |
| error_ctrl_link_off: |
| (void)dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_LINK_CLK, DSI_CLK_OFF); |
| error_phy_reset_off: |
| (void)dsi_display_phy_reset_config(display, false); |
| error_ctrl_deinit: |
| (void)dsi_display_ctrl_deinit(display); |
| error_phy_disable: |
| (void)dsi_display_phy_disable(display); |
| error_ctrl_clk_off: |
| (void)dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_CORE_CLK, DSI_CLK_OFF); |
| error_panel_post_unprep: |
| (void)dsi_panel_post_unprepare(display->panel); |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_enable(display->panel); |
| if (rc) { |
| pr_err("[%s] failed to enable DSI panel, rc=%d\n", |
| display->name, rc); |
| goto error; |
| } |
| |
| if (display->config.panel_mode == DSI_OP_VIDEO_MODE) { |
| rc = dsi_display_vid_engine_enable(display); |
| if (rc) { |
| pr_err("[%s]failed to enable DSI video engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_panel; |
| } |
| } else if (display->config.panel_mode == DSI_OP_CMD_MODE) { |
| rc = dsi_display_cmd_engine_enable(display); |
| if (rc) { |
| pr_err("[%s]failed to enable DSI cmd engine, rc=%d\n", |
| display->name, rc); |
| goto error_disable_panel; |
| } |
| } else { |
| pr_err("[%s] Invalid configuration\n", display->name); |
| rc = -EINVAL; |
| goto error_disable_panel; |
| } |
| |
| goto error; |
| |
| error_disable_panel: |
| (void)dsi_panel_disable(display->panel); |
| error: |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_post_enable(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_post_enable(display->panel); |
| if (rc) |
| pr_err("[%s] panel post-enable failed, rc=%d\n", |
| display->name, rc); |
| |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_pre_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_panel_pre_disable(display->panel); |
| if (rc) |
| pr_err("[%s] panel pre-disable failed, rc=%d\n", |
| display->name, rc); |
| |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_disable(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_display_wake_up(display); |
| if (rc) |
| pr_err("[%s] display wake up failed, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_panel_disable(display->panel); |
| if (rc) |
| pr_err("[%s] failed to disable DSI panel, rc=%d\n", |
| display->name, rc); |
| |
| if (display->config.panel_mode == DSI_OP_VIDEO_MODE) { |
| rc = dsi_display_vid_engine_disable(display); |
| if (rc) |
| pr_err("[%s]failed to disable DSI vid engine, rc=%d\n", |
| display->name, rc); |
| } else if (display->config.panel_mode == DSI_OP_CMD_MODE) { |
| rc = dsi_display_cmd_engine_disable(display); |
| if (rc) |
| pr_err("[%s]failed to disable DSI cmd engine, rc=%d\n", |
| display->name, rc); |
| } else { |
| pr_err("[%s] Invalid configuration\n", display->name); |
| rc = -EINVAL; |
| } |
| |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| int dsi_display_unprepare(struct dsi_display *display) |
| { |
| int rc = 0; |
| |
| if (!display) { |
| pr_err("Invalid params\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&display->display_lock); |
| |
| rc = dsi_display_wake_up(display); |
| if (rc) |
| pr_err("[%s] display wake up failed, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_panel_unprepare(display->panel); |
| if (rc) |
| pr_err("[%s] panel unprepare failed, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_ctrl_host_disable(display); |
| if (rc) |
| pr_err("[%s] failed to disable DSI host, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_LINK_CLK, DSI_CLK_OFF); |
| if (rc) |
| pr_err("[%s] failed to disable Link clocks, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_ctrl_deinit(display); |
| if (rc) |
| pr_err("[%s] failed to deinit controller, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_phy_disable(display); |
| if (rc) |
| pr_err("[%s] failed to disable DSI PHY, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_phy_reset_config(display, false); |
| if (rc) |
| pr_err("[%s] failed to disable DSI PHY reset config, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_display_clk_ctrl(display->dsi_clk_handle, |
| DSI_CORE_CLK, DSI_CLK_OFF); |
| if (rc) |
| pr_err("[%s] failed to disable DSI clocks, rc=%d\n", |
| display->name, rc); |
| |
| rc = dsi_panel_post_unprepare(display->panel); |
| if (rc) |
| pr_err("[%s] panel post-unprepare failed, rc=%d\n", |
| display->name, rc); |
| |
| mutex_unlock(&display->display_lock); |
| return rc; |
| } |
| |
| static int __init dsi_display_register(void) |
| { |
| dsi_phy_drv_register(); |
| dsi_ctrl_drv_register(); |
| return platform_driver_register(&dsi_display_driver); |
| } |
| |
| static void __exit dsi_display_unregister(void) |
| { |
| platform_driver_unregister(&dsi_display_driver); |
| dsi_ctrl_drv_unregister(); |
| dsi_phy_drv_unregister(); |
| } |
| |
| module_init(dsi_display_register); |
| module_exit(dsi_display_unregister); |