@@ -1,6 +1,14 @@
config DRM_STI
bool "DRM Support for STMicroelectronics SoC stiH41x Series"
depends on DRM && (SOC_STIH415 || SOC_STIH416 || ARCH_MULTIPLATFORM)
+ select DRM_KMS_HELPER
+ select DRM_GEM_CMA_HELPER
select DRM_KMS_CMA_HELPER
help
Choose this option to enable DRM on STM stiH41x chipset
+
+config DRM_STI_FBDEV
+ bool "DRM frame buffer device for STMicroelectronics SoC stiH41x Serie"
+ depends on DRM_STI
+ help
+ Choose this option to enable FBDEV on top of DRM for STM stiH41x chipset
@@ -7,7 +7,11 @@ obj-$(CONFIG_DRM_STI) += \
sti_hdmi_tx3g4c28phy.o \
sti_hda.o \
sti_tvout.o \
+ sti_drm_crtc.o \
+ sti_drm_plane.o \
+ sti_hda.o \
sti_layer.o \
sti_mixer.o \
sti_gdp.o \
- sti_vid.o
\ No newline at end of file
+ sti_vid.o \
+ sti_drm_drv.o
@@ -14,6 +14,9 @@
#include <drm/drmP.h>
#include "sti_compositor.h"
+#include "sti_drm_crtc.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_plane.h"
#include "sti_gdp.h"
#include "sti_vtg.h"
@@ -87,10 +90,15 @@ static int sti_compositor_bind(struct device *dev, struct device *master,
struct sti_compositor *compo = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
unsigned int i, crtc = 0, plane = 0;
+ struct sti_drm_private *dev_priv = drm_dev->dev_private;
+
+ dev_priv->compo = compo;
for (i = 0; i < compo->nb_mixers; i++) {
- if (compo->mixer[i])
+ if (compo->mixer[i]) {
+ sti_drm_crtc_init(drm_dev, compo->mixer[i]);
crtc++;
+ }
}
if (crtc == 0) {
DRM_ERROR("No CRTC available\n");
@@ -108,8 +116,11 @@ static int sti_compositor_bind(struct device *dev, struct device *master,
enum sti_layer_desc desc = compo->layer[i]->desc;
enum sti_layer_type type = desc & STI_LAYER_TYPE_MASK;
- if ((type == STI_GDP) && (desc != STI_GDP_0))
+ if ((type == STI_GDP) && (desc != STI_GDP_0)) {
+ sti_drm_plane_init(drm_dev, compo->layer[i],
+ (1 << crtc) - 1);
plane++;
+ }
}
}
@@ -159,6 +170,7 @@ static int sti_compositor_probe(struct platform_device *pdev)
return -ENOMEM;
}
compo->dev = dev;
+ compo->vtg_vblank_nb.notifier_call = sti_drm_crtc_vblank_cb;
/* populate data structure depending on compatibility */
BUG_ON(!of_match_node(compositor_of_match, np)->data);
new file mode 100644
@@ -0,0 +1,419 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "sti_compositor.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_crtc.h"
+#include "sti_vtg.h"
+
+static void sti_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+ DRM_DEBUG_KMS("\n");
+}
+
+static void sti_drm_crtc_prepare(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+
+ compo->enable = true;
+
+ /* Prepare and enable the compo IP clock */
+ if (mixer->id == STI_MIXER_MAIN) {
+ if (clk_prepare_enable(compo->clk_compo_main))
+ DRM_INFO("Failed to prepare/enable compo_main clk\n");
+ } else {
+ if (clk_prepare_enable(compo->clk_compo_aux))
+ DRM_INFO("Failed to prepare/enable compo_aux clk\n");
+ }
+}
+
+static void sti_drm_crtc_commit(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct sti_layer *layer;
+
+ if ((!mixer || !compo)) {
+ DRM_ERROR("Can not find mixer or compositor)\n");
+ return;
+ }
+
+ /* Find GDP0 which is reserved to the CRTC FB */
+ layer = sti_layer_find_layer(compo->layer, STI_GDP_0);
+ if (layer)
+ sti_layer_commit(layer);
+ else
+ DRM_ERROR("Can not find CRTC dedicated plane (GDP0)\n");
+
+ /* Enable layer on mixer */
+ if (sti_mixer_set_layer_status(mixer, layer, true))
+ DRM_ERROR("Can not enable layer at mixer\n");
+}
+
+static bool sti_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ /* accept the provided drm_display_mode, do not fix it up */
+ return true;
+}
+
+static int
+sti_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode, int x, int y,
+ struct drm_framebuffer *old_fb)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct sti_layer *layer;
+ struct clk *clk;
+ int rate = mode->clock * 1000;
+ int res;
+ unsigned int w, h;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d mode:%d (%s)\n",
+ crtc->base.id, sti_mixer_to_str(mixer),
+ crtc->fb->base.id, mode->base.id, mode->name);
+
+ DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
+ mode->vrefresh, mode->clock,
+ mode->hdisplay,
+ mode->hsync_start, mode->hsync_end,
+ mode->htotal,
+ mode->vdisplay,
+ mode->vsync_start, mode->vsync_end,
+ mode->vtotal, mode->type, mode->flags);
+
+ /* Set rate and prepare/enable pixel clock */
+ if (mixer->id == STI_MIXER_MAIN)
+ clk = compo->clk_pix_main;
+ else
+ clk = compo->clk_pix_aux;
+
+ res = clk_set_rate(clk, rate);
+ if (res < 0) {
+ DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
+ return -EINVAL;
+ }
+ if (clk_prepare_enable(clk)) {
+ DRM_ERROR("Failed to prepare/enable pix clk\n");
+ return -EINVAL;
+ }
+
+ sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux, &crtc->mode);
+
+ /* GDP0 is reserved to the CRTC FB */
+ layer = sti_layer_find_layer(compo->layer, STI_GDP_0);
+ if (!layer) {
+ DRM_ERROR("Can not find GDP0)\n");
+ return -EINVAL;
+ }
+
+ /* copy the mode data adjusted by mode_fixup() into crtc->mode
+ * so that hardware can be set to proper mode
+ */
+ memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
+
+ res = sti_mixer_set_layer_depth(mixer, layer);
+ if (res) {
+ DRM_ERROR("Can not set layer depth\n");
+ return -EINVAL;
+ }
+ res = sti_mixer_active_video_area(mixer, &crtc->mode);
+ if (res) {
+ DRM_ERROR("Can not set active video area\n");
+ return -EINVAL;
+ }
+
+ w = crtc->fb->width - x;
+ h = crtc->fb->height - y;
+
+ return sti_layer_prepare(layer, crtc->fb, &crtc->mode, mixer->id,
+ 0, 0, w, h, x, y, w, h);
+}
+
+static int sti_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+ struct drm_framebuffer *old_fb)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct sti_layer *layer;
+ unsigned int w, h;
+ int ret;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d (%d,%d)\n",
+ crtc->base.id, sti_mixer_to_str(mixer),
+ crtc->fb->base.id, x, y);
+
+ /* GDP0 is reserved to the CRTC FB */
+ layer = sti_layer_find_layer(compo->layer, STI_GDP_0);
+ if (!layer) {
+ DRM_ERROR("Can not find GDP0)\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ w = crtc->fb->width - crtc->x;
+ h = crtc->fb->height - crtc->y;
+
+ ret = sti_layer_prepare(layer, crtc->fb, &crtc->mode, mixer->id,
+ 0, 0, w, h,
+ crtc->x, crtc->y, w, h);
+ if (ret) {
+ DRM_ERROR("Can not prepare layer\n");
+ goto out;
+ }
+
+ sti_drm_crtc_commit(crtc);
+out:
+ return ret;
+}
+
+static void sti_drm_crtc_load_lut(struct drm_crtc *crtc)
+{
+ /* do nothing */
+}
+
+static void sti_drm_crtc_disable(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct sti_layer *layer;
+
+ if (!compo->enable)
+ return;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
+
+ /* Disable Background */
+ sti_mixer_set_background_status(mixer, false);
+
+ /* Disable GDP0 */
+ layer = sti_layer_find_layer(compo->layer, STI_GDP_0);
+ if (!layer) {
+ DRM_ERROR("Cannot find GDP0\n");
+ return;
+ }
+
+ /* Disable layer at mixer level */
+ if (sti_mixer_set_layer_status(mixer, layer, false))
+ DRM_ERROR("Can not disable %s layer at mixer\n",
+ sti_layer_to_str(layer));
+
+ /* Wait a while to be sure that a Vsync event is received */
+ msleep(WAIT_NEXT_VSYNC_MS);
+
+ /* Then disable layer itself */
+ sti_layer_disable(layer);
+
+ drm_vblank_off(crtc->dev, mixer->id);
+
+ /* Disable pixel clock and compo IP clocks */
+ if (mixer->id == STI_MIXER_MAIN) {
+ clk_disable_unprepare(compo->clk_pix_main);
+ clk_disable_unprepare(compo->clk_compo_main);
+ } else {
+ clk_disable_unprepare(compo->clk_pix_aux);
+ clk_disable_unprepare(compo->clk_compo_aux);
+ }
+
+ compo->enable = false;
+}
+
+static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
+ .dpms = sti_drm_crtc_dpms,
+ .prepare = sti_drm_crtc_prepare,
+ .commit = sti_drm_crtc_commit,
+ .mode_fixup = sti_drm_crtc_mode_fixup,
+ .mode_set = sti_drm_crtc_mode_set,
+ .mode_set_base = sti_drm_crtc_mode_set_base,
+ .load_lut = sti_drm_crtc_load_lut,
+ .disable = sti_drm_crtc_disable,
+};
+
+static int sti_drm_crtc_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags)
+{
+ struct drm_device *drm_dev = crtc->dev;
+ struct drm_framebuffer *old_fb;
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ unsigned long flags;
+ int ret;
+
+ DRM_DEBUG_KMS("fb %d --> fb %d\n", crtc->fb->base.id, fb->base.id);
+
+ mutex_lock(&drm_dev->struct_mutex);
+
+ old_fb = crtc->fb;
+ crtc->fb = fb;
+ ret = sti_drm_crtc_mode_set_base(crtc, crtc->x, crtc->y, old_fb);
+ if (ret) {
+ DRM_ERROR("failed\n");
+ crtc->fb = old_fb;
+ goto out;
+ }
+
+ if (event) {
+ event->pipe = mixer->id;
+
+ ret = drm_vblank_get(drm_dev, event->pipe);
+ if (ret) {
+ DRM_ERROR("Cannot get vblank\n");
+ goto out;
+ }
+
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+ if (mixer->pending_event) {
+ drm_vblank_put(drm_dev, event->pipe);
+ ret = -EBUSY;
+ } else {
+ mixer->pending_event = event;
+ }
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+ }
+out:
+ mutex_unlock(&drm_dev->struct_mutex);
+ return ret;
+}
+
+static void sti_drm_crtc_destroy(struct drm_crtc *crtc)
+{
+ DRM_DEBUG_KMS("\n");
+ drm_crtc_cleanup(crtc);
+}
+
+static int sti_drm_crtc_set_property(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t val)
+{
+ DRM_DEBUG_KMS("\n");
+ return 0;
+}
+
+int sti_drm_crtc_vblank_cb(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct drm_device *drm_dev;
+ struct sti_compositor *compo =
+ container_of(nb, struct sti_compositor, vtg_vblank_nb);
+ int *crtc = data;
+ unsigned long flags;
+ struct sti_drm_private *priv;
+
+ drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
+ priv = drm_dev->dev_private;
+
+ if ((event != VTG_TOP_FIELD_EVENT) &&
+ (event != VTG_BOTTOM_FIELD_EVENT)) {
+ DRM_ERROR("unknown event: %lu\n", event);
+ return -EINVAL;
+ }
+
+ drm_handle_vblank(drm_dev, *crtc);
+
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+ if (compo->mixer[*crtc]->pending_event) {
+ drm_send_vblank_event(drm_dev, -1,
+ compo->mixer[*crtc]->pending_event);
+ drm_vblank_put(drm_dev, *crtc);
+ compo->mixer[*crtc]->pending_event = NULL;
+ }
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+
+ return 0;
+}
+
+int sti_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
+{
+ struct sti_drm_private *dev_priv = dev->dev_private;
+ struct sti_compositor *compo = dev_priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+ DRM_DEBUG_DRIVER("\n");
+
+ if (sti_vtg_register_client(crtc == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux,
+ vtg_vblank_nb, crtc)) {
+ DRM_ERROR("Cannot register VTG notifier\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void sti_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
+{
+ struct sti_drm_private *priv = dev->dev_private;
+ struct sti_compositor *compo = priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+ unsigned long flags;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (sti_vtg_unregister_client(crtc == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
+ DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
+
+ /* free the resources of the pending requests */
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (compo->mixer[crtc]->pending_event) {
+ drm_vblank_put(dev, crtc);
+ compo->mixer[crtc]->pending_event = NULL;
+ }
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+
+}
+
+static struct drm_crtc_funcs sti_crtc_funcs = {
+ .set_config = drm_crtc_helper_set_config,
+ .page_flip = sti_drm_crtc_page_flip,
+ .destroy = sti_drm_crtc_destroy,
+ .set_property = sti_drm_crtc_set_property,
+};
+
+bool sti_drm_crtc_is_main(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ if (mixer->id == STI_MIXER_MAIN)
+ return true;
+
+ return false;
+}
+
+int sti_drm_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer)
+{
+ struct drm_crtc *crtc = &mixer->drm_crtc;
+ int res;
+
+ res = drm_crtc_init(drm_dev, crtc, &sti_crtc_funcs);
+ if (res) {
+ DRM_ERROR("Can not initialze CRTC\n");
+ return -EINVAL;
+ }
+
+ drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
+
+ DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
+ crtc->base.id, sti_mixer_to_str(mixer));
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STI_DRM_CRTC_H_
+#define _STI_DRM_CRTC_H_
+
+#include <drm/drmP.h>
+
+struct sti_mixer;
+
+int sti_drm_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer);
+int sti_drm_crtc_enable_vblank(struct drm_device *dev, int crtc);
+void sti_drm_crtc_disable_vblank(struct drm_device *dev, int crtc);
+int sti_drm_crtc_vblank_cb(struct notifier_block *nb,
+ unsigned long event, void *data);
+bool sti_drm_crtc_is_main(struct drm_crtc *drm_crtc);
+
+#endif
new file mode 100644
@@ -0,0 +1,244 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <drm/drmP.h>
+
+#include <linux/component.h>
+#include <linux/debugfs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "sti_drm_drv.h"
+#include "sti_drm_crtc.h"
+
+#define DRIVER_NAME "sti"
+#define DRIVER_DESC "STMicroelectronics SoC DRM"
+#define DRIVER_DATE "20140601"
+#define DRIVER_MAJOR 1
+#define DRIVER_MINOR 0
+
+#define STI_MAX_FB_HEIGHT 4096
+#define STI_MAX_FB_WIDTH 4096
+
+static struct drm_mode_config_funcs sti_drm_mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+};
+
+static void sti_drm_mode_config_init(struct drm_device *dev)
+{
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+
+ /*
+ * set max width and height as default value.
+ * this value would be used to check framebuffer size limitation
+ * at drm_mode_addfb().
+ */
+ dev->mode_config.max_width = STI_MAX_FB_HEIGHT;
+ dev->mode_config.max_height = STI_MAX_FB_WIDTH;
+
+ dev->mode_config.funcs = &sti_drm_mode_config_funcs;
+}
+
+static int sti_drm_load(struct drm_device *dev, unsigned long flags)
+{
+ struct sti_drm_private *private;
+ int ret;
+
+ private = kzalloc(sizeof(struct sti_drm_private), GFP_KERNEL);
+ if (!private) {
+ DRM_ERROR("Failed to allocate private\n");
+ return -ENOMEM;
+ }
+ dev->dev_private = (void *)private;
+ private->drm_dev = dev;
+
+ drm_mode_config_init(dev);
+ drm_kms_helper_poll_init(dev);
+
+ sti_drm_mode_config_init(dev);
+
+ ret = component_bind_all(dev->dev, dev);
+ if (ret)
+ return ret;
+
+ drm_helper_disable_unused_functions(dev);
+
+#ifdef CONFIG_DRM_STI_FBDEV
+ drm_fbdev_cma_init(dev, 32,
+ dev->mode_config.num_crtc,
+ dev->mode_config.num_connector);
+#endif
+ return 0;
+}
+
+static const struct file_operations sti_drm_driver_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .mmap = drm_gem_cma_mmap,
+ .poll = drm_poll,
+ .read = drm_read,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .release = drm_release,
+};
+
+static struct dma_buf *sti_drm_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj,
+ int flags)
+{
+ /* we want to be able to write in mmapped buffer */
+ flags |= O_RDWR;
+ return drm_gem_prime_export(dev, obj, flags);
+}
+
+static struct drm_driver sti_drm_driver = {
+ .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
+ DRIVER_GEM | DRIVER_PRIME,
+ .load = sti_drm_load,
+ .gem_free_object = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .dumb_create = drm_gem_cma_dumb_create,
+ .dumb_map_offset = drm_gem_cma_dumb_map_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+ .fops = &sti_drm_driver_fops,
+
+ .get_vblank_counter = drm_vblank_count,
+ .enable_vblank = sti_drm_crtc_enable_vblank,
+ .disable_vblank = sti_drm_crtc_disable_vblank,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = sti_drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+
+ .name = DRIVER_NAME,
+ .desc = DRIVER_DESC,
+ .date = DRIVER_DATE,
+ .major = DRIVER_MAJOR,
+ .minor = DRIVER_MINOR,
+};
+
+static int compare_of(struct device *dev, void *data)
+{
+ struct device_node *np = data;
+
+ return dev->of_node == np;
+}
+
+static int sti_drm_add_components(struct device *master, struct master *m)
+{
+ struct device_node *np = master->parent->of_node;
+ struct device_node *child_np;
+
+ child_np = of_get_next_available_child(np, NULL);
+
+ while (child_np) {
+ component_master_add_child(m, compare_of, child_np);
+ of_node_put(child_np);
+ child_np = of_get_next_available_child(np, child_np);
+ }
+
+ return 0;
+}
+
+static int sti_drm_bind(struct device *dev)
+{
+ return drm_platform_init(&sti_drm_driver, to_platform_device(dev));
+}
+
+static void sti_drm_unbind(struct device *dev)
+{
+ drm_put_dev(dev_get_drvdata(dev));
+}
+
+static const struct component_master_ops sti_drm_ops = {
+ .add_components = sti_drm_add_components,
+ .bind = sti_drm_bind,
+ .unbind = sti_drm_unbind,
+};
+
+static int sti_drm_master_probe(struct platform_device *pdev)
+{
+ dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+
+ return component_master_add(&pdev->dev, &sti_drm_ops);
+}
+
+static int sti_drm_master_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &sti_drm_ops);
+ return 0;
+}
+
+static struct platform_driver sti_drm_master_driver = {
+ .probe = sti_drm_master_probe,
+ .remove = sti_drm_master_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME "__master",
+ },
+};
+
+static int sti_drm_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct platform_device *master;
+
+ of_platform_populate(node, NULL, NULL, dev);
+
+ master = platform_device_register_resndata(dev,
+ DRIVER_NAME "__master", -1,
+ NULL, 0, NULL, 0);
+ if (!master)
+ return -EINVAL;
+
+ platform_set_drvdata(pdev, master);
+ return 0;
+}
+
+static int sti_drm_platform_remove(struct platform_device *pdev)
+{
+ struct platform_device *master = platform_get_drvdata(pdev);
+ platform_device_unregister(master);
+ return 0;
+}
+
+static const struct of_device_id sti_drm_dt_ids[] = {
+ { .compatible = "st,sti-display-subsystem", },
+ { /* end node */ },
+};
+MODULE_DEVICE_TABLE(of, sti_drm_dt_ids);
+
+static struct platform_driver sti_drm_platform_driver = {
+ .probe = sti_drm_platform_probe,
+ .remove = sti_drm_platform_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .of_match_table = sti_drm_dt_ids,
+ },
+};
+
+module_platform_driver(sti_drm_platform_driver);
+module_platform_driver(sti_drm_master_driver);
+
+MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
+MODULE_LICENSE("GPL V2");
new file mode 100644
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STI_DRM_DRV_H_
+#define _STI_DRM_DRV_H_
+
+#include <drm/drmP.h>
+
+struct sti_compositor;
+struct sti_tvout;
+
+/**
+ * STI drm private structure
+ * This structure is stored as private in the drm_device
+ *
+ * @compo: compositor
+ * @plane_zorder_property: z-order property for CRTC planes
+ * @drm_dev: drm device
+ */
+struct sti_drm_private {
+ struct sti_compositor *compo;
+ struct drm_property *plane_zorder_property;
+ struct drm_device *drm_dev;
+};
+
+#endif
new file mode 100644
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include "sti_compositor.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_plane.h"
+#include "sti_vtg.h"
+
+enum sti_layer_desc sti_layer_default_zorder[] = {
+ STI_GDP_0,
+ STI_VID_0,
+ STI_GDP_1,
+ STI_VID_1,
+ STI_GDP_2,
+ STI_GDP_3,
+};
+
+/* (Background) < GDP0 < VID0 < GDP1 < VID1 < GDP2 < GDP3 < (ForeGround) */
+
+static int
+sti_drm_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
+ struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+ unsigned int crtc_w, unsigned int crtc_h,
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h)
+{
+ struct sti_layer *layer = to_sti_layer(plane);
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ int res;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s) drm fb:%d\n",
+ crtc->base.id, sti_mixer_to_str(mixer),
+ plane->base.id, sti_layer_to_str(layer), fb->base.id);
+ DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", crtc_w, crtc_h, crtc_x, crtc_y);
+
+ res = sti_mixer_set_layer_depth(mixer, layer);
+ if (res) {
+ DRM_ERROR("Can not set layer depth\n");
+ return res;
+ }
+
+ /* src_x are in 16.16 format. */
+ res = sti_layer_prepare(layer, fb, &crtc->mode, mixer->id,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x >> 16, src_y >> 16,
+ src_w >> 16, src_h >> 16);
+ if (res) {
+ DRM_ERROR("Layer prepare failed\n");
+ return res;
+ }
+
+ res = sti_layer_commit(layer);
+ if (res) {
+ DRM_ERROR("Layer commit failed\n");
+ return res;
+ }
+
+ res = sti_mixer_set_layer_status(mixer, layer, true);
+ if (res) {
+ DRM_ERROR("Can not enable layer at mixer\n");
+ return res;
+ }
+
+ return 0;
+}
+
+static int sti_drm_disable_plane(struct drm_plane *plane)
+{
+ struct sti_layer *layer;
+ struct sti_mixer *mixer;
+ int lay_res, mix_res;
+
+ if (!plane->crtc) {
+ DRM_DEBUG_DRIVER("drm plane:%d not enabled\n", plane->base.id);
+ return 0;
+ }
+ layer = to_sti_layer(plane);
+ mixer = to_sti_mixer(plane->crtc);
+
+ DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
+ plane->crtc->base.id, sti_mixer_to_str(mixer),
+ plane->base.id, sti_layer_to_str(layer));
+
+ /* Disable layer at mixer level */
+ mix_res = sti_mixer_set_layer_status(mixer, layer, false);
+ if (mix_res)
+ DRM_ERROR("Can not disable layer at mixer\n");
+
+ /* Wait a while to be sure that a Vsync event is received */
+ msleep(WAIT_NEXT_VSYNC_MS);
+
+ /* Then disable layer itself */
+ lay_res = sti_layer_disable(layer);
+ if (lay_res)
+ DRM_ERROR("Layer disable failed\n");
+
+ if (lay_res || mix_res)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void sti_drm_plane_destroy(struct drm_plane *plane)
+{
+ DRM_DEBUG_DRIVER("\n");
+
+ sti_drm_disable_plane(plane);
+ drm_plane_cleanup(plane);
+}
+
+static int sti_drm_plane_set_property(struct drm_plane *plane,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct drm_device *dev = plane->dev;
+ struct sti_drm_private *private = dev->dev_private;
+ struct sti_layer *layer = to_sti_layer(plane);
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (property == private->plane_zorder_property) {
+ layer->zorder = val;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static struct drm_plane_funcs sti_drm_plane_funcs = {
+ .update_plane = sti_drm_update_plane,
+ .disable_plane = sti_drm_disable_plane,
+ .destroy = sti_drm_plane_destroy,
+ .set_property = sti_drm_plane_set_property,
+};
+
+static void sti_drm_plane_attach_zorder_property(struct drm_plane *plane,
+ uint64_t default_val)
+{
+ struct drm_device *dev = plane->dev;
+ struct sti_drm_private *private = dev->dev_private;
+ struct drm_property *prop;
+ struct sti_layer *layer = to_sti_layer(plane);
+
+ prop = private->plane_zorder_property;
+ if (!prop) {
+ prop = drm_property_create_range(dev, 0, "zpos", 0,
+ GAM_MIXER_NB_DEPTH_LEVEL - 1);
+ if (!prop)
+ return;
+
+ private->plane_zorder_property = prop;
+ }
+
+ drm_object_attach_property(&plane->base, prop, default_val);
+ layer->zorder = default_val;
+}
+
+struct drm_plane *sti_drm_plane_init(struct drm_device *dev,
+ struct sti_layer *layer,
+ unsigned int possible_crtcs)
+{
+ int err, i;
+ uint64_t default_zorder = 0;
+
+ err = drm_plane_init(dev, &layer->plane, possible_crtcs,
+ &sti_drm_plane_funcs,
+ sti_layer_get_formats(layer),
+ sti_layer_get_nb_formats(layer), false);
+ if (err) {
+ DRM_ERROR("Failed to initialize plane\n");
+ return NULL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(sti_layer_default_zorder); i++)
+ if (sti_layer_default_zorder[i] == layer->desc)
+ break;
+
+ default_zorder = i;
+
+ sti_drm_plane_attach_zorder_property(&layer->plane, default_zorder);
+
+ DRM_DEBUG_DRIVER("drm plane:%d mapped to %s with zorder:%llu\n",
+ layer->plane.base.id,
+ sti_layer_to_str(layer), default_zorder);
+
+ return &layer->plane;
+}
new file mode 100644
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STI_DRM_PLANE_H_
+#define _STI_DRM_PLANE_H_
+
+#include <drm/drmP.h>
+
+struct sti_layer;
+
+struct drm_plane *sti_drm_plane_init(struct drm_device *dev,
+ struct sti_layer *layer, unsigned int possible_crtcs);
+
+#endif
Make the link between all the hardware drivers and DRM/KMS interface. Create the driver itself and make it register all the sub-components. Use GEM CMA helpers for buffer allocation. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> --- drivers/gpu/drm/sti/Kconfig | 8 + drivers/gpu/drm/sti/Makefile | 6 +- drivers/gpu/drm/sti/sti_compositor.c | 16 +- drivers/gpu/drm/sti/sti_drm_crtc.c | 419 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/sti/sti_drm_crtc.h | 21 ++ drivers/gpu/drm/sti/sti_drm_drv.c | 244 ++++++++++++++++++++ drivers/gpu/drm/sti/sti_drm_drv.h | 29 +++ drivers/gpu/drm/sti/sti_drm_plane.c | 192 ++++++++++++++++ drivers/gpu/drm/sti/sti_drm_plane.h | 17 ++ 9 files changed, 949 insertions(+), 3 deletions(-) create mode 100644 drivers/gpu/drm/sti/sti_drm_crtc.c create mode 100644 drivers/gpu/drm/sti/sti_drm_crtc.h create mode 100644 drivers/gpu/drm/sti/sti_drm_drv.c create mode 100644 drivers/gpu/drm/sti/sti_drm_drv.h create mode 100644 drivers/gpu/drm/sti/sti_drm_plane.c create mode 100644 drivers/gpu/drm/sti/sti_drm_plane.h