linux_dsm_epyc7002/drivers/gpu/drm/armada/armada_drv.c
Russell King 9611cb93fa drm/armada: register crtc with port
Register the CRTC with the port node so that the DRM OF helpers can
find the appropriate CRTC.  This is important so that encoders can
identify their corresponding possible CRTCs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-07-11 20:34:47 +01:00

519 lines
12 KiB
C

/*
* 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->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,
.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_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",
.owner = THIS_MODULE,
},
.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");