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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/armada/armada_drv.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/armada/armada_drv.c')
-rw-r--r--kernel/drivers/gpu/drm/armada/armada_drv.c519
1 files changed, 519 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/armada/armada_drv.c b/kernel/drivers/gpu/drm/armada/armada_drv.c
new file mode 100644
index 000000000..b01420c84
--- /dev/null
+++ b/kernel/drivers/gpu/drm/armada/armada_drv.c
@@ -0,0 +1,519 @@
+/*
+ * Copyright (C) 2012 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include "armada_crtc.h"
+#include "armada_drm.h"
+#include "armada_gem.h"
+#include "armada_hw.h"
+#include <drm/armada_drm.h>
+#include "armada_ioctlP.h"
+
+#ifdef CONFIG_DRM_ARMADA_TDA1998X
+#include <drm/i2c/tda998x.h>
+#include "armada_slave.h"
+
+static struct tda998x_encoder_params params = {
+ /* With 0x24, there is no translation between vp_out and int_vp
+ FB LCD out Pins VIP Int Vp
+ R:23:16 R:7:0 VPC7:0 7:0 7:0[R]
+ G:15:8 G:15:8 VPB7:0 23:16 23:16[G]
+ B:7:0 B:23:16 VPA7:0 15:8 15:8[B]
+ */
+ .swap_a = 2,
+ .swap_b = 3,
+ .swap_c = 4,
+ .swap_d = 5,
+ .swap_e = 0,
+ .swap_f = 1,
+ .audio_cfg = BIT(2),
+ .audio_frame[1] = 1,
+ .audio_format = AFMT_SPDIF,
+ .audio_sample_rate = 44100,
+};
+
+static const struct armada_drm_slave_config tda19988_config = {
+ .i2c_adapter_id = 0,
+ .crtcs = 1 << 0, /* Only LCD0 at the moment */
+ .polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT,
+ .interlace_allowed = true,
+ .info = {
+ .type = "tda998x",
+ .addr = 0x70,
+ .platform_data = &params,
+ },
+};
+#endif
+
+static bool is_componentized(struct device *dev)
+{
+ return dev->of_node || dev->platform_data;
+}
+
+static void armada_drm_unref_work(struct work_struct *work)
+{
+ struct armada_private *priv =
+ container_of(work, struct armada_private, fb_unref_work);
+ struct drm_framebuffer *fb;
+
+ while (kfifo_get(&priv->fb_unref, &fb))
+ drm_framebuffer_unreference(fb);
+}
+
+/* Must be called with dev->event_lock held */
+void __armada_drm_queue_unref_work(struct drm_device *dev,
+ struct drm_framebuffer *fb)
+{
+ struct armada_private *priv = dev->dev_private;
+
+ WARN_ON(!kfifo_put(&priv->fb_unref, fb));
+ schedule_work(&priv->fb_unref_work);
+}
+
+void armada_drm_queue_unref_work(struct drm_device *dev,
+ struct drm_framebuffer *fb)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->event_lock, flags);
+ __armada_drm_queue_unref_work(dev, fb);
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+static int armada_drm_load(struct drm_device *dev, unsigned long flags)
+{
+ const struct platform_device_id *id;
+ const struct armada_variant *variant;
+ struct armada_private *priv;
+ struct resource *res[ARRAY_SIZE(priv->dcrtc)];
+ struct resource *mem = NULL;
+ int ret, n, i;
+
+ memset(res, 0, sizeof(res));
+
+ for (n = i = 0; ; n++) {
+ struct resource *r = platform_get_resource(dev->platformdev,
+ IORESOURCE_MEM, n);
+ if (!r)
+ break;
+
+ /* Resources above 64K are graphics memory */
+ if (resource_size(r) > SZ_64K)
+ mem = r;
+ else if (i < ARRAY_SIZE(priv->dcrtc))
+ res[i++] = r;
+ else
+ return -EINVAL;
+ }
+
+ if (!mem)
+ return -ENXIO;
+
+ if (!devm_request_mem_region(dev->dev, mem->start,
+ resource_size(mem), "armada-drm"))
+ return -EBUSY;
+
+ priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ DRM_ERROR("failed to allocate private\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(dev->platformdev, dev);
+ dev->dev_private = priv;
+
+ /* Get the implementation specific driver data. */
+ id = platform_get_device_id(dev->platformdev);
+ if (!id)
+ return -ENXIO;
+
+ variant = (const struct armada_variant *)id->driver_data;
+
+ INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work);
+ INIT_KFIFO(priv->fb_unref);
+
+ /* Mode setting support */
+ drm_mode_config_init(dev);
+ dev->mode_config.min_width = 320;
+ dev->mode_config.min_height = 200;
+
+ /*
+ * With vscale enabled, the maximum width is 1920 due to the
+ * 1920 by 3 lines RAM
+ */
+ dev->mode_config.max_width = 1920;
+ dev->mode_config.max_height = 2048;
+
+ dev->mode_config.preferred_depth = 24;
+ dev->mode_config.funcs = &armada_drm_mode_config_funcs;
+ drm_mm_init(&priv->linear, mem->start, resource_size(mem));
+
+ /* Create all LCD controllers */
+ for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
+ int irq;
+
+ if (!res[n])
+ break;
+
+ irq = platform_get_irq(dev->platformdev, n);
+ if (irq < 0)
+ goto err_kms;
+
+ ret = armada_drm_crtc_create(dev, dev->dev, res[n], irq,
+ variant, NULL);
+ if (ret)
+ goto err_kms;
+ }
+
+ if (is_componentized(dev->dev)) {
+ ret = component_bind_all(dev->dev, dev);
+ if (ret)
+ goto err_kms;
+ } else {
+#ifdef CONFIG_DRM_ARMADA_TDA1998X
+ ret = armada_drm_connector_slave_create(dev, &tda19988_config);
+ if (ret)
+ goto err_kms;
+#endif
+ }
+
+ ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
+ if (ret)
+ goto err_comp;
+
+ dev->irq_enabled = true;
+ dev->vblank_disable_allowed = 1;
+
+ ret = armada_fbdev_init(dev);
+ if (ret)
+ goto err_comp;
+
+ drm_kms_helper_poll_init(dev);
+
+ return 0;
+
+ err_comp:
+ if (is_componentized(dev->dev))
+ component_unbind_all(dev->dev, dev);
+ err_kms:
+ drm_mode_config_cleanup(dev);
+ drm_mm_takedown(&priv->linear);
+ flush_work(&priv->fb_unref_work);
+
+ return ret;
+}
+
+static int armada_drm_unload(struct drm_device *dev)
+{
+ struct armada_private *priv = dev->dev_private;
+
+ drm_kms_helper_poll_fini(dev);
+ armada_fbdev_fini(dev);
+
+ if (is_componentized(dev->dev))
+ component_unbind_all(dev->dev, dev);
+
+ drm_mode_config_cleanup(dev);
+ drm_mm_takedown(&priv->linear);
+ flush_work(&priv->fb_unref_work);
+ dev->dev_private = NULL;
+
+ return 0;
+}
+
+void armada_drm_vbl_event_add(struct armada_crtc *dcrtc,
+ struct armada_vbl_event *evt)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dcrtc->irq_lock, flags);
+ if (list_empty(&evt->node)) {
+ list_add_tail(&evt->node, &dcrtc->vbl_list);
+
+ drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
+ }
+ spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
+}
+
+void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc,
+ struct armada_vbl_event *evt)
+{
+ if (!list_empty(&evt->node)) {
+ list_del_init(&evt->node);
+ drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
+ }
+}
+
+void armada_drm_vbl_event_remove_unlocked(struct armada_crtc *dcrtc,
+ struct armada_vbl_event *evt)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dcrtc->irq_lock, flags);
+ armada_drm_vbl_event_remove(dcrtc, evt);
+ spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
+}
+
+/* These are called under the vbl_lock. */
+static int armada_drm_enable_vblank(struct drm_device *dev, int crtc)
+{
+ struct armada_private *priv = dev->dev_private;
+ armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
+ return 0;
+}
+
+static void armada_drm_disable_vblank(struct drm_device *dev, int crtc)
+{
+ struct armada_private *priv = dev->dev_private;
+ armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
+}
+
+static struct drm_ioctl_desc armada_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,
+ DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl,
+ DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl,
+ DRM_UNLOCKED),
+};
+
+static void armada_drm_lastclose(struct drm_device *dev)
+{
+ armada_fbdev_lastclose(dev);
+}
+
+static const struct file_operations armada_drm_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = drm_read,
+ .poll = drm_poll,
+ .unlocked_ioctl = drm_ioctl,
+ .mmap = drm_gem_mmap,
+ .open = drm_open,
+ .release = drm_release,
+};
+
+static struct drm_driver armada_drm_driver = {
+ .load = armada_drm_load,
+ .open = NULL,
+ .preclose = NULL,
+ .postclose = NULL,
+ .lastclose = armada_drm_lastclose,
+ .unload = armada_drm_unload,
+ .set_busid = drm_platform_set_busid,
+ .get_vblank_counter = drm_vblank_count,
+ .enable_vblank = armada_drm_enable_vblank,
+ .disable_vblank = armada_drm_disable_vblank,
+#ifdef CONFIG_DEBUG_FS
+ .debugfs_init = armada_drm_debugfs_init,
+ .debugfs_cleanup = armada_drm_debugfs_cleanup,
+#endif
+ .gem_free_object = armada_gem_free_object,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = armada_gem_prime_export,
+ .gem_prime_import = armada_gem_prime_import,
+ .dumb_create = armada_gem_dumb_create,
+ .dumb_map_offset = armada_gem_dumb_map_offset,
+ .dumb_destroy = armada_gem_dumb_destroy,
+ .gem_vm_ops = &armada_gem_vm_ops,
+ .major = 1,
+ .minor = 0,
+ .name = "armada-drm",
+ .desc = "Armada SoC DRM",
+ .date = "20120730",
+ .driver_features = DRIVER_GEM | DRIVER_MODESET |
+ DRIVER_HAVE_IRQ | DRIVER_PRIME,
+ .ioctls = armada_ioctls,
+ .fops = &armada_drm_fops,
+};
+
+static int armada_drm_bind(struct device *dev)
+{
+ return drm_platform_init(&armada_drm_driver, to_platform_device(dev));
+}
+
+static void armada_drm_unbind(struct device *dev)
+{
+ drm_put_dev(dev_get_drvdata(dev));
+}
+
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int compare_dev_name(struct device *dev, void *data)
+{
+ const char *name = data;
+ return !strcmp(dev_name(dev), name);
+}
+
+static void armada_add_endpoints(struct device *dev,
+ struct component_match **match, struct device_node *port)
+{
+ struct device_node *ep, *remote;
+
+ for_each_child_of_node(port, ep) {
+ remote = of_graph_get_remote_port_parent(ep);
+ if (!remote || !of_device_is_available(remote)) {
+ of_node_put(remote);
+ continue;
+ } else if (!of_device_is_available(remote->parent)) {
+ dev_warn(dev, "parent device of %s is not available\n",
+ remote->full_name);
+ of_node_put(remote);
+ continue;
+ }
+
+ component_match_add(dev, match, compare_of, remote);
+ of_node_put(remote);
+ }
+}
+
+static int armada_drm_find_components(struct device *dev,
+ struct component_match **match)
+{
+ struct device_node *port;
+ int i;
+
+ if (dev->of_node) {
+ struct device_node *np = dev->of_node;
+
+ for (i = 0; ; i++) {
+ port = of_parse_phandle(np, "ports", i);
+ if (!port)
+ break;
+
+ component_match_add(dev, match, compare_of, port);
+ of_node_put(port);
+ }
+
+ if (i == 0) {
+ dev_err(dev, "missing 'ports' property\n");
+ return -ENODEV;
+ }
+
+ for (i = 0; ; i++) {
+ port = of_parse_phandle(np, "ports", i);
+ if (!port)
+ break;
+
+ armada_add_endpoints(dev, match, port);
+ of_node_put(port);
+ }
+ } else if (dev->platform_data) {
+ char **devices = dev->platform_data;
+ struct device *d;
+
+ for (i = 0; devices[i]; i++)
+ component_match_add(dev, match, compare_dev_name,
+ devices[i]);
+
+ if (i == 0) {
+ dev_err(dev, "missing 'ports' property\n");
+ return -ENODEV;
+ }
+
+ for (i = 0; devices[i]; i++) {
+ d = bus_find_device_by_name(&platform_bus_type, NULL,
+ devices[i]);
+ if (d && d->of_node) {
+ for_each_child_of_node(d->of_node, port)
+ armada_add_endpoints(dev, match, port);
+ }
+ put_device(d);
+ }
+ }
+
+ return 0;
+}
+
+static const struct component_master_ops armada_master_ops = {
+ .bind = armada_drm_bind,
+ .unbind = armada_drm_unbind,
+};
+
+static int armada_drm_probe(struct platform_device *pdev)
+{
+ if (is_componentized(&pdev->dev)) {
+ struct component_match *match = NULL;
+ int ret;
+
+ ret = armada_drm_find_components(&pdev->dev, &match);
+ if (ret < 0)
+ return ret;
+
+ return component_master_add_with_match(&pdev->dev,
+ &armada_master_ops, match);
+ } else {
+ return drm_platform_init(&armada_drm_driver, pdev);
+ }
+}
+
+static int armada_drm_remove(struct platform_device *pdev)
+{
+ if (is_componentized(&pdev->dev))
+ component_master_del(&pdev->dev, &armada_master_ops);
+ else
+ drm_put_dev(platform_get_drvdata(pdev));
+ return 0;
+}
+
+static const struct platform_device_id armada_drm_platform_ids[] = {
+ {
+ .name = "armada-drm",
+ .driver_data = (unsigned long)&armada510_ops,
+ }, {
+ .name = "armada-510-drm",
+ .driver_data = (unsigned long)&armada510_ops,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
+
+static struct platform_driver armada_drm_platform_driver = {
+ .probe = armada_drm_probe,
+ .remove = armada_drm_remove,
+ .driver = {
+ .name = "armada-drm",
+ },
+ .id_table = armada_drm_platform_ids,
+};
+
+static int __init armada_drm_init(void)
+{
+ int ret;
+
+ armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls);
+
+ ret = platform_driver_register(&armada_lcd_platform_driver);
+ if (ret)
+ return ret;
+ ret = platform_driver_register(&armada_drm_platform_driver);
+ if (ret)
+ platform_driver_unregister(&armada_lcd_platform_driver);
+ return ret;
+}
+module_init(armada_drm_init);
+
+static void __exit armada_drm_exit(void)
+{
+ platform_driver_unregister(&armada_drm_platform_driver);
+ platform_driver_unregister(&armada_lcd_platform_driver);
+}
+module_exit(armada_drm_exit);
+
+MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
+MODULE_DESCRIPTION("Armada DRM Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:armada-drm");