diff options
Diffstat (limited to 'drivers/gpu/drm/imx/parallel-display.c')
| -rw-r--r-- | drivers/gpu/drm/imx/parallel-display.c | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c deleted file mode 100644 index f3ce51121dd6..000000000000 --- a/drivers/gpu/drm/imx/parallel-display.c +++ /dev/null @@ -1,293 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * i.MX drm driver - parallel display implementation - * - * Copyright (C) 2012 Sascha Hauer, Pengutronix - */ - -#include <linux/component.h> -#include <linux/module.h> -#include <drm/drmP.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_of.h> -#include <drm/drm_panel.h> -#include <linux/videodev2.h> -#include <video/of_display_timing.h> - -#include "imx-drm.h" - -struct imx_parallel_display { - struct drm_connector connector; - struct drm_encoder encoder; - struct device *dev; - void *edid; - int edid_len; - u32 bus_format; - u32 bus_flags; - struct drm_display_mode mode; - struct drm_panel *panel; - struct drm_bridge *bridge; -}; - -static inline struct imx_parallel_display *con_to_imxpd(struct drm_connector *c) -{ - return container_of(c, struct imx_parallel_display, connector); -} - -static inline struct imx_parallel_display *enc_to_imxpd(struct drm_encoder *e) -{ - return container_of(e, struct imx_parallel_display, encoder); -} - -static int imx_pd_connector_get_modes(struct drm_connector *connector) -{ - struct imx_parallel_display *imxpd = con_to_imxpd(connector); - struct device_node *np = imxpd->dev->of_node; - int num_modes = 0; - - if (imxpd->panel && imxpd->panel->funcs && - imxpd->panel->funcs->get_modes) { - num_modes = imxpd->panel->funcs->get_modes(imxpd->panel); - if (num_modes > 0) - return num_modes; - } - - if (imxpd->edid) { - drm_connector_update_edid_property(connector, imxpd->edid); - num_modes = drm_add_edid_modes(connector, imxpd->edid); - } - - if (np) { - struct drm_display_mode *mode = drm_mode_create(connector->dev); - int ret; - - if (!mode) - return -EINVAL; - - ret = of_get_drm_display_mode(np, &imxpd->mode, - &imxpd->bus_flags, - OF_USE_NATIVE_MODE); - if (ret) - return ret; - - drm_mode_copy(mode, &imxpd->mode); - mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, - drm_mode_probed_add(connector, mode); - num_modes++; - } - - return num_modes; -} - -static struct drm_encoder *imx_pd_connector_best_encoder( - struct drm_connector *connector) -{ - struct imx_parallel_display *imxpd = con_to_imxpd(connector); - - return &imxpd->encoder; -} - -static void imx_pd_encoder_enable(struct drm_encoder *encoder) -{ - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); - - drm_panel_prepare(imxpd->panel); - drm_panel_enable(imxpd->panel); -} - -static void imx_pd_encoder_disable(struct drm_encoder *encoder) -{ - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); - - drm_panel_disable(imxpd->panel); - drm_panel_unprepare(imxpd->panel); -} - -static int imx_pd_encoder_atomic_check(struct drm_encoder *encoder, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) -{ - struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state); - struct drm_display_info *di = &conn_state->connector->display_info; - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); - - if (!imxpd->bus_format && di->num_bus_formats) { - imx_crtc_state->bus_flags = di->bus_flags; - imx_crtc_state->bus_format = di->bus_formats[0]; - } else { - imx_crtc_state->bus_flags = imxpd->bus_flags; - imx_crtc_state->bus_format = imxpd->bus_format; - } - imx_crtc_state->di_hsync_pin = 2; - imx_crtc_state->di_vsync_pin = 3; - - return 0; -} - -static const struct drm_connector_funcs imx_pd_connector_funcs = { - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = imx_drm_connector_destroy, - .reset = drm_atomic_helper_connector_reset, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - -static const struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = { - .get_modes = imx_pd_connector_get_modes, - .best_encoder = imx_pd_connector_best_encoder, -}; - -static const struct drm_encoder_funcs imx_pd_encoder_funcs = { - .destroy = imx_drm_encoder_destroy, -}; - -static const struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = { - .enable = imx_pd_encoder_enable, - .disable = imx_pd_encoder_disable, - .atomic_check = imx_pd_encoder_atomic_check, -}; - -static int imx_pd_register(struct drm_device *drm, - struct imx_parallel_display *imxpd) -{ - struct drm_encoder *encoder = &imxpd->encoder; - int ret; - - ret = imx_drm_encoder_parse_of(drm, encoder, imxpd->dev->of_node); - if (ret) - return ret; - - /* set the connector's dpms to OFF so that - * drm_helper_connector_dpms() won't return - * immediately since the current state is ON - * at this point. - */ - imxpd->connector.dpms = DRM_MODE_DPMS_OFF; - - drm_encoder_helper_add(encoder, &imx_pd_encoder_helper_funcs); - drm_encoder_init(drm, encoder, &imx_pd_encoder_funcs, - DRM_MODE_ENCODER_NONE, NULL); - - if (!imxpd->bridge) { - drm_connector_helper_add(&imxpd->connector, - &imx_pd_connector_helper_funcs); - drm_connector_init(drm, &imxpd->connector, - &imx_pd_connector_funcs, - DRM_MODE_CONNECTOR_DPI); - } - - if (imxpd->panel) - drm_panel_attach(imxpd->panel, &imxpd->connector); - - if (imxpd->bridge) { - ret = drm_bridge_attach(encoder, imxpd->bridge, NULL); - if (ret < 0) { - dev_err(imxpd->dev, "failed to attach bridge: %d\n", - ret); - return ret; - } - } else { - drm_connector_attach_encoder(&imxpd->connector, encoder); - } - - return 0; -} - -static int imx_pd_bind(struct device *dev, struct device *master, void *data) -{ - struct drm_device *drm = data; - struct device_node *np = dev->of_node; - const u8 *edidp; - struct imx_parallel_display *imxpd; - int ret; - u32 bus_format = 0; - const char *fmt; - - imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL); - if (!imxpd) - return -ENOMEM; - - edidp = of_get_property(np, "edid", &imxpd->edid_len); - if (edidp) - imxpd->edid = kmemdup(edidp, imxpd->edid_len, GFP_KERNEL); - - ret = of_property_read_string(np, "interface-pix-fmt", &fmt); - if (!ret) { - if (!strcmp(fmt, "rgb24")) - bus_format = MEDIA_BUS_FMT_RGB888_1X24; - else if (!strcmp(fmt, "rgb565")) - bus_format = MEDIA_BUS_FMT_RGB565_1X16; - else if (!strcmp(fmt, "bgr666")) - bus_format = MEDIA_BUS_FMT_RGB666_1X18; - else if (!strcmp(fmt, "lvds666")) - bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI; - } - imxpd->bus_format = bus_format; - - /* port@1 is the output port */ - ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge); - if (ret && ret != -ENODEV) - return ret; - - imxpd->dev = dev; - - ret = imx_pd_register(drm, imxpd); - if (ret) - return ret; - - dev_set_drvdata(dev, imxpd); - - return 0; -} - -static void imx_pd_unbind(struct device *dev, struct device *master, - void *data) -{ - struct imx_parallel_display *imxpd = dev_get_drvdata(dev); - - if (imxpd->panel) - drm_panel_detach(imxpd->panel); - - kfree(imxpd->edid); -} - -static const struct component_ops imx_pd_ops = { - .bind = imx_pd_bind, - .unbind = imx_pd_unbind, -}; - -static int imx_pd_probe(struct platform_device *pdev) -{ - return component_add(&pdev->dev, &imx_pd_ops); -} - -static int imx_pd_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &imx_pd_ops); - - return 0; -} - -static const struct of_device_id imx_pd_dt_ids[] = { - { .compatible = "fsl,imx-parallel-display", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, imx_pd_dt_ids); - -static struct platform_driver imx_pd_driver = { - .probe = imx_pd_probe, - .remove = imx_pd_remove, - .driver = { - .of_match_table = imx_pd_dt_ids, - .name = "imx-parallel-display", - }, -}; - -module_platform_driver(imx_pd_driver); - -MODULE_DESCRIPTION("i.MX parallel display driver"); -MODULE_AUTHOR("Sascha Hauer, Pengutronix"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx-parallel-display"); |