2012-02-03 02:01:55 -07:00
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/*
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* Samsung SoC DP (Display Port) interface driver.
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*
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* Copyright (C) 2012 Samsung Electronics Co., Ltd.
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* Author: Jingoo Han <jg1.han@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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2015-01-20 09:38:46 -07:00
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#include <linux/of_graph.h>
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2014-05-08 23:25:20 -06:00
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#include <linux/component.h>
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2014-01-30 14:19:23 -07:00
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#include <video/of_display_timing.h>
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#include <video/of_videomode.h>
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2016-03-28 19:57:03 -06:00
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#include <video/videomode.h>
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2012-02-03 02:01:55 -07:00
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2014-01-30 14:19:23 -07:00
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#include <drm/drmP.h>
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2014-01-30 14:19:30 -07:00
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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2017-03-29 12:55:46 -06:00
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#include <drm/drm_of.h>
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2014-07-31 11:42:14 -06:00
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#include <drm/drm_panel.h>
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2014-01-30 14:19:23 -07:00
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2016-03-28 19:57:03 -06:00
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#include <drm/bridge/analogix_dp.h>
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#include <drm/exynos_drm.h>
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2015-08-15 09:14:08 -06:00
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#include "exynos_drm_crtc.h"
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2012-02-03 02:01:55 -07:00
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2016-03-28 19:57:03 -06:00
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#define to_dp(nm) container_of(nm, struct exynos_dp_device, nm)
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2014-01-30 14:19:30 -07:00
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2016-03-28 19:57:03 -06:00
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struct exynos_dp_device {
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struct drm_encoder encoder;
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2016-06-08 08:13:27 -06:00
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struct drm_connector *connector;
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2016-03-28 19:57:03 -06:00
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struct drm_bridge *ptn_bridge;
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struct drm_device *drm_dev;
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struct device *dev;
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2015-04-07 07:28:50 -06:00
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2016-03-28 19:57:03 -06:00
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struct videomode vm;
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2018-01-10 09:23:41 -07:00
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struct analogix_dp_device *adp;
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2016-03-28 19:57:03 -06:00
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struct analogix_dp_plat_data plat_data;
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2014-02-24 03:20:15 -07:00
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};
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2016-09-25 01:54:59 -06:00
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static int exynos_dp_crtc_clock_enable(struct analogix_dp_plat_data *plat_data,
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2016-03-28 19:57:03 -06:00
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bool enable)
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2012-02-03 02:01:55 -07:00
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{
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2016-03-28 19:57:03 -06:00
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struct exynos_dp_device *dp = to_dp(plat_data);
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struct drm_encoder *encoder = &dp->encoder;
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2012-02-03 02:01:55 -07:00
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2016-04-29 10:39:08 -06:00
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if (!encoder->crtc)
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return -EPERM;
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2012-02-03 02:01:55 -07:00
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2016-04-29 10:39:08 -06:00
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exynos_drm_pipe_clk_enable(to_exynos_crtc(encoder->crtc), enable);
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2012-07-18 22:52:59 -06:00
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2012-02-03 02:01:55 -07:00
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return 0;
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}
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2016-03-28 19:57:03 -06:00
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static int exynos_dp_poweron(struct analogix_dp_plat_data *plat_data)
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2012-02-03 02:01:55 -07:00
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{
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2016-03-28 19:57:03 -06:00
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return exynos_dp_crtc_clock_enable(plat_data, true);
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2012-02-03 02:01:55 -07:00
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}
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2016-03-28 19:57:03 -06:00
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static int exynos_dp_poweroff(struct analogix_dp_plat_data *plat_data)
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2012-02-03 02:01:55 -07:00
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{
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2016-03-28 19:57:03 -06:00
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return exynos_dp_crtc_clock_enable(plat_data, false);
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2012-02-03 02:01:55 -07:00
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}
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2016-06-29 03:15:35 -06:00
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static int exynos_dp_get_modes(struct analogix_dp_plat_data *plat_data,
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struct drm_connector *connector)
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2012-02-03 02:01:55 -07:00
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{
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2016-03-28 19:57:03 -06:00
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struct exynos_dp_device *dp = to_dp(plat_data);
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2014-01-30 14:19:30 -07:00
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struct drm_display_mode *mode;
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2016-03-28 19:57:03 -06:00
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int num_modes = 0;
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2014-01-30 14:19:30 -07:00
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2016-03-28 19:57:03 -06:00
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if (dp->plat_data.panel)
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return num_modes;
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2014-07-31 11:42:14 -06:00
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2014-01-30 14:19:30 -07:00
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mode = drm_mode_create(connector->dev);
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if (!mode) {
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DRM_ERROR("failed to create a new display mode.\n");
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2016-03-28 19:57:03 -06:00
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return num_modes;
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2014-01-30 14:19:30 -07:00
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}
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2016-02-12 05:13:56 -07:00
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drm_display_mode_from_videomode(&dp->vm, mode);
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2014-01-30 14:19:30 -07:00
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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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drm_mode_set_name(mode);
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drm_mode_probed_add(connector, mode);
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2014-01-30 14:19:23 -07:00
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2016-03-28 19:57:03 -06:00
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return num_modes + 1;
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2014-02-24 03:20:15 -07:00
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}
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2016-03-28 19:57:03 -06:00
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static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,
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struct drm_bridge *bridge,
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struct drm_connector *connector)
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2014-01-30 14:19:30 -07:00
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{
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2016-03-28 19:57:03 -06:00
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struct exynos_dp_device *dp = to_dp(plat_data);
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2014-01-30 14:19:30 -07:00
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int ret;
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2016-06-08 08:13:27 -06:00
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dp->connector = connector;
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2015-08-10 18:37:04 -06:00
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2016-03-28 19:57:03 -06:00
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/* Pre-empt DP connector creation if there's a bridge */
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if (dp->ptn_bridge) {
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2016-11-28 08:59:08 -07:00
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ret = drm_bridge_attach(&dp->encoder, dp->ptn_bridge, bridge);
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2016-03-28 19:57:03 -06:00
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if (ret) {
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DRM_ERROR("Failed to attach bridge to drm\n");
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bridge->next = NULL;
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return ret;
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2014-07-31 11:42:14 -06:00
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}
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}
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2015-11-02 04:00:03 -07:00
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return 0;
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}
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static void exynos_dp_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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}
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2016-03-28 19:57:03 -06:00
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static void exynos_dp_nop(struct drm_encoder *encoder)
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2015-11-02 04:00:03 -07:00
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{
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2016-03-28 19:57:03 -06:00
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/* do nothing */
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2015-11-02 04:00:03 -07:00
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}
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2015-12-15 04:21:06 -07:00
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static const struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
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2015-08-15 09:14:08 -06:00
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.mode_set = exynos_dp_mode_set,
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2016-03-28 19:57:03 -06:00
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.enable = exynos_dp_nop,
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.disable = exynos_dp_nop,
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2014-01-30 14:19:23 -07:00
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};
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2015-12-15 04:21:06 -07:00
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static const struct drm_encoder_funcs exynos_dp_encoder_funcs = {
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2015-08-15 09:14:08 -06:00
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.destroy = drm_encoder_cleanup,
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};
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2014-01-30 14:19:23 -07:00
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static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
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{
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int ret;
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2016-02-12 05:13:56 -07:00
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ret = of_get_videomode(dp->dev->of_node, &dp->vm, OF_USE_NATIVE_MODE);
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2014-01-30 14:19:23 -07:00
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if (ret) {
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DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
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return ret;
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}
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return 0;
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}
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2014-05-08 23:25:20 -06:00
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static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
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2012-02-03 02:01:55 -07:00
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{
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2014-11-17 01:54:24 -07:00
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struct exynos_dp_device *dp = dev_get_drvdata(dev);
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2015-08-15 09:14:08 -06:00
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struct drm_encoder *encoder = &dp->encoder;
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2016-03-28 19:57:03 -06:00
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struct drm_device *drm_dev = data;
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2017-08-24 07:33:51 -06:00
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int ret;
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2012-02-03 02:01:55 -07:00
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2016-03-28 19:57:03 -06:00
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dp->dev = dev;
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dp->drm_dev = drm_dev;
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2012-10-12 14:48:00 -06:00
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2016-03-28 19:57:03 -06:00
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dp->plat_data.dev_type = EXYNOS_DP;
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2018-04-23 04:49:58 -06:00
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dp->plat_data.power_on_start = exynos_dp_poweron;
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2016-03-28 19:57:03 -06:00
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dp->plat_data.power_off = exynos_dp_poweroff;
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dp->plat_data.attach = exynos_dp_bridge_attach;
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dp->plat_data.get_modes = exynos_dp_get_modes;
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2012-10-12 14:48:00 -06:00
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2016-03-28 19:57:03 -06:00
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if (!dp->plat_data.panel && !dp->ptn_bridge) {
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2014-07-31 11:42:14 -06:00
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ret = exynos_dp_dt_parse_panel(dp);
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if (ret)
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return ret;
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}
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2014-01-30 14:19:23 -07:00
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2015-08-15 09:14:08 -06:00
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drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
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drm: Pass 'name' to drm_encoder_init()
Done with coccinelle for the most part. However, it thinks '...' is
part of the semantic patch, so I put an 'int DOTDOTDOT' placeholder
in its place and got rid of it with sed afterwards.
@@
identifier dev, encoder, funcs;
@@
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
int encoder_type
+ ,const char *name, int DOTDOTDOT
)
{ ... }
@@
identifier dev, encoder, funcs;
@@
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
int encoder_type
+ ,const char *name, int DOTDOTDOT
);
@@
expression E1, E2, E3, E4;
@@
drm_encoder_init(E1, E2, E3, E4
+ ,NULL
)
v2: Add ', or NULL...' to @name kernel doc (Jani)
Annotate the function with __printf() attribute (Jani)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449670818-2966-1-git-send-email-ville.syrjala@linux.intel.com
2015-12-09 07:20:18 -07:00
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DRM_MODE_ENCODER_TMDS, NULL);
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2015-08-15 09:14:08 -06:00
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drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
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2015-08-05 17:24:20 -06:00
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2017-08-24 07:33:51 -06:00
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ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
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if (ret < 0)
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return ret;
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2016-03-28 19:57:03 -06:00
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dp->plat_data.encoder = encoder;
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2015-08-05 17:24:20 -06:00
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2018-01-10 09:23:41 -07:00
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dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
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2018-01-10 09:23:42 -07:00
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if (IS_ERR(dp->adp)) {
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dp->encoder.funcs->destroy(&dp->encoder);
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2018-01-10 09:23:41 -07:00
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return PTR_ERR(dp->adp);
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2018-01-10 09:23:42 -07:00
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}
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2018-01-10 09:23:41 -07:00
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return 0;
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2012-02-03 02:01:55 -07:00
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}
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2014-05-08 23:25:20 -06:00
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static void exynos_dp_unbind(struct device *dev, struct device *master,
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2016-03-28 19:57:19 -06:00
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void *data)
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2012-02-03 02:01:55 -07:00
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{
|
2018-01-10 09:23:41 -07:00
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struct exynos_dp_device *dp = dev_get_drvdata(dev);
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2018-01-10 09:23:42 -07:00
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analogix_dp_unbind(dp->adp);
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dp->encoder.funcs->destroy(&dp->encoder);
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2014-05-08 23:25:20 -06:00
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}
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static const struct component_ops exynos_dp_ops = {
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.bind = exynos_dp_bind,
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.unbind = exynos_dp_unbind,
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};
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static int exynos_dp_probe(struct platform_device *pdev)
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{
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2014-07-31 11:42:14 -06:00
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struct device *dev = &pdev->dev;
|
2017-03-29 12:55:46 -06:00
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struct device_node *np;
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2014-07-31 11:42:14 -06:00
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struct exynos_dp_device *dp;
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2017-03-29 12:55:46 -06:00
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struct drm_panel *panel;
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struct drm_bridge *bridge;
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int ret;
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2014-05-29 03:28:02 -06:00
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2014-07-31 11:42:14 -06:00
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dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
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2016-03-28 19:57:19 -06:00
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GFP_KERNEL);
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2014-07-31 11:42:14 -06:00
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if (!dp)
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return -ENOMEM;
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|
2016-03-28 19:57:03 -06:00
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/*
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* We just use the drvdata until driver run into component
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* add function, and then we would set drvdata to null, so
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* that analogix dp driver would take charge of the drvdata.
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*/
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2014-11-17 01:54:24 -07:00
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platform_set_drvdata(pdev, dp);
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2015-11-26 05:34:18 -07:00
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/* This is for the backward compatibility. */
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2016-01-29 08:09:31 -07:00
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np = of_parse_phandle(dev->of_node, "panel", 0);
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if (np) {
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2016-03-28 19:57:03 -06:00
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dp->plat_data.panel = of_drm_find_panel(np);
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2016-01-29 08:09:31 -07:00
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of_node_put(np);
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2016-03-28 19:57:03 -06:00
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if (!dp->plat_data.panel)
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2014-07-31 11:42:14 -06:00
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return -EPROBE_DEFER;
|
2015-11-26 05:34:18 -07:00
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goto out;
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2016-01-29 08:09:31 -07:00
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}
|
2015-11-26 05:34:18 -07:00
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2017-03-29 12:55:46 -06:00
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ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &panel, &bridge);
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if (ret)
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|
return ret;
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|
|
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|
|
/* The remote port can be either a panel or a bridge */
|
|
|
|
dp->plat_data.panel = panel;
|
2018-03-05 01:57:41 -07:00
|
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dp->plat_data.skip_connector = !!bridge;
|
2017-03-29 12:55:46 -06:00
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dp->ptn_bridge = bridge;
|
2015-01-20 09:38:46 -07:00
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|
2015-11-26 05:34:18 -07:00
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|
out:
|
2016-03-28 19:57:03 -06:00
|
|
|
return component_add(&pdev->dev, &exynos_dp_ops);
|
2014-05-08 23:25:20 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int exynos_dp_remove(struct platform_device *pdev)
|
|
|
|
{
|
2014-05-29 03:28:02 -06:00
|
|
|
component_del(&pdev->dev, &exynos_dp_ops);
|
|
|
|
|
2012-02-03 02:01:55 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-02 04:32:36 -07:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int exynos_dp_suspend(struct device *dev)
|
|
|
|
{
|
2018-01-10 09:23:41 -07:00
|
|
|
struct exynos_dp_device *dp = dev_get_drvdata(dev);
|
|
|
|
|
|
|
|
return analogix_dp_suspend(dp->adp);
|
2015-11-02 04:32:36 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static int exynos_dp_resume(struct device *dev)
|
|
|
|
{
|
2018-01-10 09:23:41 -07:00
|
|
|
struct exynos_dp_device *dp = dev_get_drvdata(dev);
|
|
|
|
|
|
|
|
return analogix_dp_resume(dp->adp);
|
2015-11-02 04:32:36 -07:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static const struct dev_pm_ops exynos_dp_pm_ops = {
|
|
|
|
SET_RUNTIME_PM_OPS(exynos_dp_suspend, exynos_dp_resume, NULL)
|
|
|
|
};
|
|
|
|
|
2012-10-12 14:48:00 -06:00
|
|
|
static const struct of_device_id exynos_dp_match[] = {
|
|
|
|
{ .compatible = "samsung,exynos5-dp" },
|
|
|
|
{},
|
|
|
|
};
|
2014-07-29 20:29:41 -06:00
|
|
|
MODULE_DEVICE_TABLE(of, exynos_dp_match);
|
2012-10-12 14:48:00 -06:00
|
|
|
|
2014-01-30 14:19:23 -07:00
|
|
|
struct platform_driver dp_driver = {
|
2012-02-03 02:01:55 -07:00
|
|
|
.probe = exynos_dp_probe,
|
2012-12-21 14:07:39 -07:00
|
|
|
.remove = exynos_dp_remove,
|
2012-02-03 02:01:55 -07:00
|
|
|
.driver = {
|
|
|
|
.name = "exynos-dp",
|
|
|
|
.owner = THIS_MODULE,
|
2015-11-02 04:32:36 -07:00
|
|
|
.pm = &exynos_dp_pm_ops,
|
2013-10-16 10:28:15 -06:00
|
|
|
.of_match_table = exynos_dp_match,
|
2012-02-03 02:01:55 -07:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
|
2016-03-28 19:57:03 -06:00
|
|
|
MODULE_DESCRIPTION("Samsung Specific Analogix-DP Driver Extension");
|
2014-06-03 06:46:11 -06:00
|
|
|
MODULE_LICENSE("GPL v2");
|