This driver add the basic functions for Encoder, and link the Encoder to appropriate DRM bridge. This driver is depend on sii9022 driver(drm_bridge approach),which is sent by Boris Brezillon to community but not merged. https://patchwork.kernel.org/patch/8600921/ Signed-off-by: Alison Wang <alison.wang@xxxxxxx> Signed-off-by: Xiubo Li <lixiubo@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Jianwei Wang <jianwei.wang.chn@xxxxxxxxx> Signed-off-by: Meng Yi <meng.yi@xxxxxxx> --- drivers/gpu/drm/fsl-dcu/Makefile | 1 + drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_hdmi.c | 194 +++++++++++++++++++++++++++ drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c | 29 ++++ drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h | 4 + 4 files changed, 228 insertions(+) create mode 100644 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_hdmi.c diff --git a/drivers/gpu/drm/fsl-dcu/Makefile b/drivers/gpu/drm/fsl-dcu/Makefile index b35a292..12e2245 100644 --- a/drivers/gpu/drm/fsl-dcu/Makefile +++ b/drivers/gpu/drm/fsl-dcu/Makefile @@ -1,6 +1,7 @@ fsl-dcu-drm-y := fsl_dcu_drm_drv.o \ fsl_dcu_drm_kms.o \ fsl_dcu_drm_rgb.o \ + fsl_dcu_drm_hdmi.o \ fsl_dcu_drm_plane.o \ fsl_dcu_drm_crtc.o \ fsl_dcu_drm_fbdev.o \ diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_hdmi.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_hdmi.c new file mode 100644 index 0000000..76441c7 --- /dev/null +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_hdmi.c @@ -0,0 +1,194 @@ +/* + * Copyright 2015 Freescale Semiconductor, Inc. + * + * Freescale DCU drm device driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/fsl_devices.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/backlight.h> +#include <linux/of_graph.h> +#include <video/videomode.h> +#include <video/of_display_timing.h> + +#include <drm/drmP.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_encoder_slave.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_edid.h> + +#include "fsl_dcu_drm_drv.h" +#include "fsl_dcu_drm_output.h" + +static void +fsl_dcu_drm_hdmienc_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ +} + +static int +fsl_dcu_drm_hdmienc_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + return 0; +} + +static void +fsl_dcu_drm_hdmienc_disable(struct drm_encoder *encoder) +{ +} + +static void +fsl_dcu_drm_hdmienc_enable(struct drm_encoder *encoder) +{ +} + +static const struct drm_encoder_helper_funcs encoder_helper_funcs = { + .atomic_check = fsl_dcu_drm_hdmienc_atomic_check, + .disable = fsl_dcu_drm_hdmienc_disable, + .enable = fsl_dcu_drm_hdmienc_enable, + .mode_set = fsl_dcu_drm_hdmienc_mode_set, +}; + +static void fsl_dcu_drm_hdmienc_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +void fsl_dcu_drm_hdmienc_reset(struct drm_encoder *encoder) +{ +} + +static const struct drm_encoder_funcs encoder_funcs = { + .reset = fsl_dcu_drm_hdmienc_reset, + .destroy = fsl_dcu_drm_hdmienc_destroy, +}; + +int fsl_dcu_drm_hdmienc_create(struct fsl_dcu_drm_device *fsl_dev, + struct drm_crtc *crtc) +{ + struct drm_encoder *encoder; + int ret; + + do { + encoder = devm_kzalloc(fsl_dev->dev, + sizeof(struct drm_encoder), GFP_KERNEL); + encoder->possible_crtcs = 1; + ret = drm_encoder_init(fsl_dev->drm, encoder, &encoder_funcs, + DRM_MODE_ENCODER_TMDS, NULL); + if (ret < 0) { + devm_kfree(fsl_dev->dev, encoder); + break; + } + + drm_encoder_helper_add(encoder, &encoder_helper_funcs); + encoder->crtc = crtc; + + return 0; + } while (false); + + DRM_ERROR("failed to initialize hdmi encoder\n"); + if (encoder) + devm_kfree(fsl_dev->dev, encoder); + + crtc->funcs->destroy(crtc); + return ret; +} + +static struct drm_encoder *fsl_dcu_drm_hdmi_find_encoder(struct drm_device *dev) +{ + struct drm_encoder *encoder; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + if (encoder->encoder_type == DRM_MODE_ENCODER_TMDS) + return encoder; + } + + return NULL; +} + +int fsl_dcu_drm_hdmienc_attach_bridge(struct fsl_dcu_drm_device *fsl_dev) +{ + struct drm_device *drm_dev = fsl_dev->drm; + struct drm_encoder *encoder; + struct drm_bridge *bridge; + int ret; + struct device_node *entity; + struct of_endpoint *ep; + struct device_node *ep_node; + struct device_node *parent = fsl_dev->dev->of_node; + + do { + ep = devm_kzalloc(fsl_dev->dev, + sizeof(struct of_endpoint), GFP_KERNEL); + if (!ep) + break; + + ep_node = devm_kzalloc(fsl_dev->dev, + sizeof(struct device_node), GFP_KERNEL); + if (!ep_node) + break; + + ep_node = of_graph_get_next_endpoint(parent, NULL); + if (!ep_node) + break; + + ret = of_graph_parse_endpoint(ep_node, ep); + if (ret < 0) { + of_node_put(ep_node); + break; + } + + entity = of_graph_get_remote_port_parent(ep->local_node); + if (!entity) + break; + + bridge = of_drm_find_bridge(entity); + if (!bridge) + break; + + encoder = fsl_dcu_drm_hdmi_find_encoder(drm_dev); + if (!encoder) + break; + + encoder->bridge = bridge; + bridge->encoder = encoder; + + ret = drm_bridge_attach(drm_dev, bridge); + if (ret) + break; + + return 0; + } while (false); + + DRM_ERROR("failed to attach the bridge\n"); + + if (ep) + devm_kfree(fsl_dev->dev, ep); + + if (ep_node) + devm_kfree(fsl_dev->dev, ep_node); + + encoder->funcs->destroy(encoder); + return ret; +} + +MODULE_AUTHOR("NXP Semiconductor, Inc."); +MODULE_DESCRIPTION("NXP LS1021A DCU driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c index c564ec6..a7fe1d2 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c @@ -17,10 +17,29 @@ #include "fsl_dcu_drm_crtc.h" #include "fsl_dcu_drm_drv.h" +bool g_enable_hdmi; + +static int __init enable_hdmi_setup(char *str) +{ + g_enable_hdmi = true; + + return 1; +} + +__setup("hdmi", enable_hdmi_setup); + +static void fsl_dcu_drm_output_poll_changed(struct drm_device *dev) +{ + struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; + + drm_fbdev_cma_hotplug_event(fsl_dev->fbdev); +} + static const struct drm_mode_config_funcs fsl_dcu_drm_mode_config_funcs = { .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, .fb_create = drm_fb_cma_create, + .output_poll_changed = fsl_dcu_drm_output_poll_changed, }; int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev) @@ -47,6 +66,16 @@ int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev) if (ret) goto fail_connector; + if (g_enable_hdmi) { + ret = fsl_dcu_drm_hdmienc_create(fsl_dev, &fsl_dev->crtc); + if (ret) + return ret; + + ret = fsl_dcu_drm_hdmienc_attach_bridge(fsl_dev); + if (ret) + return ret; + } + drm_mode_config_reset(fsl_dev->drm); drm_kms_helper_poll_init(fsl_dev->drm); diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h index 7093109..8915b07 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h @@ -29,5 +29,9 @@ int fsl_dcu_drm_connector_create(struct fsl_dcu_drm_device *fsl_dev, struct drm_encoder *encoder); int fsl_dcu_drm_encoder_create(struct fsl_dcu_drm_device *fsl_dev, struct drm_crtc *crtc); +int fsl_dcu_drm_hdmienc_attach_bridge(struct fsl_dcu_drm_device *fsl_dev); +int fsl_dcu_drm_hdmienc_create(struct fsl_dcu_drm_device *fsl_dev, + struct drm_crtc *crtc); + #endif /* __FSL_DCU_DRM_CONNECTOR_H__ */ -- 2.1.0.27.g96db324 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
